From: Benoit Parrot <bparrot@xxxxxx>
Add Video Processing Front End (VPFE) driver for AM43XX family of devices
Driver supports the following:
- Dual instances (AM43XX has two hardware instance)
- V4L2 API using MMAP buffer access based on videobuf2 api
- Asynchronous sensor/decoder sub device registration
[detheridge@xxxxxx - fixed up for v3.14]
[balbi@xxxxxx - updated for v3.16-rc5
- fixed v4l2-compliance
- fixed a kernel crash
- fixed checkpatch.pl ]
Signed-off-by: Benoit Parrot <bparrot@xxxxxx>
Signed-off-by: Darren Etheridge <detheridge@xxxxxx>
Signed-off-by: Felipe Balbi <balbi@xxxxxx>
---
drivers/media/platform/Kconfig | 1 +
drivers/media/platform/Makefile | 2 +
drivers/media/platform/ti-vpfe/Kconfig | 12 +
drivers/media/platform/ti-vpfe/Makefile | 2 +
drivers/media/platform/ti-vpfe/am437x_isif.c | 1053 +++++++++
drivers/media/platform/ti-vpfe/am437x_isif.h | 355 +++
drivers/media/platform/ti-vpfe/am437x_isif_regs.h | 144 ++
drivers/media/platform/ti-vpfe/vpfe_capture.c | 2478 +++++++++++++++++++++
drivers/media/platform/ti-vpfe/vpfe_capture.h | 263 +++
9 files changed, 4310 insertions(+)
create mode 100644 drivers/media/platform/ti-vpfe/Kconfig
create mode 100644 drivers/media/platform/ti-vpfe/Makefile
create mode 100644 drivers/media/platform/ti-vpfe/am437x_isif.c
create mode 100644 drivers/media/platform/ti-vpfe/am437x_isif.h
create mode 100644 drivers/media/platform/ti-vpfe/am437x_isif_regs.h
create mode 100644 drivers/media/platform/ti-vpfe/vpfe_capture.c
create mode 100644 drivers/media/platform/ti-vpfe/vpfe_capture.h
diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index 8108c69..c119f0a 100644
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig
@@ -120,6 +120,7 @@ config VIDEO_S3C_CAMIF
source "drivers/media/platform/soc_camera/Kconfig"
source "drivers/media/platform/exynos4-is/Kconfig"
source "drivers/media/platform/s5p-tv/Kconfig"
+source "drivers/media/platform/ti-vpfe/Kconfig"
endif # V4L_PLATFORM_DRIVERS
diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile
index e5269da..bd6b321 100644
--- a/drivers/media/platform/Makefile
+++ b/drivers/media/platform/Makefile
@@ -52,3 +52,5 @@ obj-y += davinci/
obj-$(CONFIG_ARCH_OMAP) += omap/
ccflags-y += -I$(srctree)/drivers/media/i2c
+
+obj-$(CONFIG_VIDEO_AM437X_VPFE) += ti-vpfe/
diff --git a/drivers/media/platform/ti-vpfe/Kconfig b/drivers/media/platform/ti-vpfe/Kconfig
new file mode 100644
index 0000000..6758bb7
--- /dev/null
+++ b/drivers/media/platform/ti-vpfe/Kconfig
@@ -0,0 +1,12 @@
+config VIDEO_AM437X_VPFE
+ tristate "TI AM437x VPFE video capture driver"
+ depends on VIDEO_V4L2 && ARCH_OMAP3
+ select MEDIA_CONTROLLER
+ select VIDEO_V4L2_SUBDEV_API
+ select VIDEOBUF2_DMA_CONTIG
+ help
+ Support for AM437x Video Processing Front End based Video
+ Capture Driver.
+
+ To compile this driver as a module, choose M here. The module
+ will be called ti_vpfe.
diff --git a/drivers/media/platform/ti-vpfe/Makefile b/drivers/media/platform/ti-vpfe/Makefile
new file mode 100644
index 0000000..0155cd8
--- /dev/null
+++ b/drivers/media/platform/ti-vpfe/Makefile
@@ -0,0 +1,2 @@
+ti-vpfe-y := am437x_isif.o vpfe_capture.o
+obj-$(CONFIG_VIDEO_AM437X_VPFE) += ti-vpfe.o
diff --git a/drivers/media/platform/ti-vpfe/am437x_isif.c b/drivers/media/platform/ti-vpfe/am437x_isif.c
new file mode 100644
index 0000000..1f4262b
--- /dev/null
+++ b/drivers/media/platform/ti-vpfe/am437x_isif.c
@@ -0,0 +1,1053 @@
+/*
+ * TI AM437x Image Sensor Interface
+ *
+ * Copyright (C) 2013 - 2014 Texas Instruments, Inc.
+ *
+ * Benoit Parrot <bparrot@xxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/uaccess.h>
+#include <linux/videodev2.h>
+#include <linux/gfp.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/clk-private.h>
+#include <linux/pm_runtime.h>
+#include "vpfe_capture.h"
+
+/* Print Four-character-code (FOURCC) */
+static char *print_fourcc(u32 fmt)
+{
+ static char code[5];
+
+ code[0] = (unsigned char)(fmt & 0xff);
+ code[1] = (unsigned char)((fmt>>8) & 0xff);
+ code[2] = (unsigned char)((fmt>>16) & 0xff);
+ code[3] = (unsigned char)((fmt>>24) & 0xff);
+ code[4] = '\0';
+
+ return code;
+}
+
+/* Raw Bayer formats */
+static u32 isif_raw_bayer_pix_formats[] = {
+ V4L2_PIX_FMT_SBGGR8,
+ V4L2_PIX_FMT_SBGGR16,
+ V4L2_PIX_FMT_UYVY,
+ V4L2_PIX_FMT_YUYV
+};
+
+/* Raw YUV formats */
+static u32 isif_raw_yuv_pix_formats[] = {
+ V4L2_PIX_FMT_UYVY,
+ V4L2_PIX_FMT_YUYV
+};
+
+static inline u32 isif_read(struct vpfe_isif_device *isif,
+ u32 offset)
+{
+ return readl(isif->isif_cfg.base_addr + offset);
+}
+
+static inline void isif_write(struct vpfe_isif_device *isif,
+ u32 val, u32 offset)
+{
+ writel(val, isif->isif_cfg.base_addr + offset);
+}
+
+static void isif_enable(struct vpfe_isif_device *isif, int flag)
+{
+ unsigned int pcr = 0;
+
+ pcr = isif_read(isif, ISIF_PCR);
+
+ if (flag) { /* Enable */
+ pcr = 1;
+ } else { /* Disable */
+ pcr = 0;
+ }
+
+ dev_dbg(isif->isif_cfg.dev,
+ "isif_enable(%d) pcr:%x\n", flag, pcr);
+ isif_write(isif, pcr, ISIF_PCR);
+}
+static void isif_module_enable(struct vpfe_isif_device *isif, int flag)
+{
+ unsigned int cfg = 0;
+
+ cfg = isif_read(isif, ISIF_VPFE_CONFIG);
+
+ if (flag) { /* Enable */
+ cfg = (ISIF_VPFE_CONFIG_VPFE_EN_ENABLE<<
+ ISIF_VPFE_CONFIG_VPFE_EN_SHIFT);
+ } else { /* Disable */
+ cfg &= ~(ISIF_VPFE_CONFIG_VPFE_EN_ENABLE<<
+ ISIF_VPFE_CONFIG_VPFE_EN_SHIFT);
+ }
+
+ dev_dbg(isif->isif_cfg.dev,
+ "isif_module_enable(%d) cfg:%x\n", flag, cfg);
+ isif_write(isif, cfg, ISIF_VPFE_CONFIG);
+}
+
+/*
+ * isif_setwin()
+ * This function will configure the window size
+ * to be capture in ISIF reg
+ */
+static void isif_setwin(struct vpfe_isif_device *isif,
+ struct v4l2_rect *image_win, enum isif_frmfmt frm_fmt, int bpp)
+{
+ int horz_start, horz_nr_pixels;
+ int vert_start, vert_nr_lines;
+ int val = 0, mid_img = 0;
+
+ dev_dbg(isif->isif_cfg.dev, "isif_setwin: %dx%d (WxH)\n",
+ image_win->width, image_win->height);
+ dev_dbg(isif->isif_cfg.dev, "isif_setwin: top %d left %d\n",
+ image_win->top, image_win->left);
+ /*
+ * ppc - per pixel count. indicates how many pixels per cell
+ * output to SDRAM. example, for ycbcr, it is one y and one c, so 2.
+ * raw capture this is 1
+ */
+ horz_start = image_win->left * bpp;
+ horz_nr_pixels = (image_win->width * bpp) - 1;
+ isif_write(isif,
+ (horz_start << ISIF_HORZ_INFO_SPH_SHIFT) | horz_nr_pixels,
+ ISIF_HORZ_INFO);
+
+ vert_start = image_win->top;
+
+ if (frm_fmt == ISIF_FRMFMT_INTERLACED) {
+ vert_nr_lines = (image_win->height >> 1) - 1;
+ vert_start >>= 1;
+ /* Since first line doesn't have any data */
+ vert_start += 1;
+ /* configure VDINT0 */
+ val = (vert_start << ISIF_VDINT_VDINT0_SHIFT);
+ isif_write(isif, val, ISIF_VDINT);
+
+ } else {
+ /* Since first line doesn't have any data */
+ vert_start += 1;
+ vert_nr_lines = image_win->height - 1;
+ /*
+ * configure VDINT0 and VDINT1. VDINT1 will be at half
+ * of image height
+ */
+ mid_img = vert_start + (image_win->height / 2);
+ val = (vert_start << ISIF_VDINT_VDINT0_SHIFT) |
+ (mid_img & ISIF_VDINT_VDINT1_MASK);
+ isif_write(isif, val, ISIF_VDINT);
+ }
+ isif_write(isif,
+ (vert_start << ISIF_VERT_START_SLV0_SHIFT) | vert_start,
+ ISIF_VERT_START);
+ isif_write(isif, vert_nr_lines, ISIF_VERT_LINES);
+ dev_dbg(isif->isif_cfg.dev, "End of isif_setwin...\n");
+}
+
+static void isif_readregs(struct vpfe_isif_device *isif)
+{
+ dev_dbg(isif->isif_cfg.dev, "ALAW: 0x%x\n",
+ isif_read(isif, ISIF_ALAW));
+ dev_dbg(isif->isif_cfg.dev, "CLAMP: 0x%x\n",
+ isif_read(isif, ISIF_CLAMP));
+ dev_dbg(isif->isif_cfg.dev, "DCSUB: 0x%x\n",
+ isif_read(isif, ISIF_DCSUB));
+ dev_dbg(isif->isif_cfg.dev, "BLKCMP: 0x%x\n",
+ isif_read(isif, ISIF_BLKCMP));
+ dev_dbg(isif->isif_cfg.dev, "COLPTN: 0x%x\n",
+ isif_read(isif, ISIF_COLPTN));
+ dev_dbg(isif->isif_cfg.dev, "HSIZE_OFF: 0x%x\n",
+ isif_read(isif, ISIF_HSIZE_OFF));
+ dev_dbg(isif->isif_cfg.dev, "SDOFST: 0x%x\n",
+ isif_read(isif, ISIF_SDOFST));
+ dev_dbg(isif->isif_cfg.dev, "SYN_MODE: 0x%x\n",
+ isif_read(isif, ISIF_SYN_MODE));
+ dev_dbg(isif->isif_cfg.dev, "HORZ_INFO: 0x%x\n",
+ isif_read(isif, ISIF_HORZ_INFO));
+ dev_dbg(isif->isif_cfg.dev, "VERT_START: 0x%x\n",
+ isif_read(isif, ISIF_VERT_START));
+ dev_dbg(isif->isif_cfg.dev, "VERT_LINES: 0x%x\n",
+ isif_read(isif, ISIF_VERT_LINES));
+}
+
+static int validate_isif_param(struct vpfe_isif_device *isif,
+ struct isif_config_params_raw *ccdcparam)
+{
+ if (ccdcparam->alaw.enable) {
+ u8 max_gamma =
+ isif_gamma_width_max_bit(ccdcparam->alaw.gamma_wd);
+ u8 max_data =
+ isif_data_size_max_bit(ccdcparam->data_sz);
+
+ if ((ccdcparam->alaw.gamma_wd > ISIF_GAMMA_BITS_09_0) ||
+ (ccdcparam->alaw.gamma_wd < ISIF_GAMMA_BITS_15_6) ||
+ (max_gamma > max_data)) {
+ dev_dbg(isif->isif_cfg.dev, "\nInvalid data line select");
+ return -1;
+ }
+ }
+ return 0;
+}
+
+static int isif_update_raw_params(struct vpfe_isif_device *isif,
+ struct isif_config_params_raw *raw_params)
+{
+ struct isif_config_params_raw *config_params =
+ &isif->isif_cfg.bayer.config_params;
+
+ memcpy(config_params, raw_params, sizeof(*raw_params));
+
+ return 0;
+}
+
+/*
+ * isif_restore_defaults()
+ * This function will write defaults to all ISIF registers
+ */
+static void isif_restore_defaults(struct vpfe_isif_device *isif)
+{
+ int i;
+
+ /* disable ISIF */
+ isif_enable(isif, 0);
+ /* set all registers to default value */
+ for (i = 4; i <= 0x94; i += 4)
+ isif_write(isif, 0, i);
+ isif_write(isif, ISIF_NO_CULLING, ISIF_CULLING);
+ isif_write(isif, ISIF_GAMMA_BITS_11_2, ISIF_ALAW);
+}
+
+static int isif_intr_status(struct vpfe_isif_device *isif);
+static void isif_clear_intr(struct vpfe_isif_device *isif, int vdint);
+
+static int isif_close(struct vpfe_isif_device *isif, struct device *dev)
+{
+ int dma_cntl, i, pcr;
+
+ dev_dbg(isif->isif_cfg.dev, "isif_close\n");
+
+ /* If the ISIF module is still busy wait for it to be done */
+ i = 0;
+ while (i++ < 10) {
+ usleep_range(5000, 6000);
+ pcr = isif_read(isif, ISIF_PCR);
+ if (pcr) {
+ /* make sure it it is disabled */
+ isif_enable(isif, 0);
+ } else {
+ break;
+ }
+ }
+
+ /* Disable ISIF by resetting all register to default POR values */
+ isif_restore_defaults(isif);
+
+ /* if DMA_CNTL overflow bit is set. Clear it
+ * It appears to take a while for this to become quiescent ~20ms
+ */
+ i = 0;
+ while (i++ < 10) {
+ dma_cntl = isif_read(isif, ISIF_DMA_CNTL);
+ if (dma_cntl & ISIF_DMA_CNTL_OVERFLOW) {
+ /* Clear the overflow bit */
+ isif_write(isif, dma_cntl, ISIF_DMA_CNTL);
+ usleep_range(5000, 6000);
+ } else {
+ break;
+ }
+ }
+
+ /* Disabled the module at the CONFIG level */
+ isif_module_enable(isif, 0);
+
+ pm_runtime_put_sync(dev);
+ return 0;
+}
+
+static int isif_open(struct vpfe_isif_device *isif, struct device *dev)
+{
+ dev_dbg(isif->isif_cfg.dev, "isif_open\n");
+
+ pm_runtime_get_sync(dev);
+ isif_module_enable(isif, 1);
+ isif_restore_defaults(isif);
+
+ return 0;
+}
+
+/* Parameter operations */
+static int isif_set_params(struct vpfe_isif_device *isif, void __user *params)
+{
+ struct isif_config_params_raw isif_raw_params;
+ int x;
+
+ if (isif->isif_cfg.if_type != VPFE_RAW_BAYER)
+ return -EINVAL;
+
+ x = copy_from_user(&isif_raw_params, params, sizeof(isif_raw_params));
+ if (x) {
+ dev_dbg(isif->isif_cfg.dev, "error copying ccdc params, %d\n", x);
+ return -EFAULT;
+ }
+
+ if (!validate_isif_param(isif, &isif_raw_params)) {
+ if (!isif_update_raw_params(isif, &isif_raw_params))
+ return 0;
+ }
+ return -EINVAL;
+}
+
+/*
+ * isif_config_ycbcr()
+ * This function will configure ISIF for YCbCr video capture
+ */
+static void isif_config_ycbcr(struct vpfe_isif_device *isif)
+{
+ struct isif_params_ycbcr *params = &isif->isif_cfg.ycbcr;
+ u32 syn_mode;
+
+ dev_dbg(isif->isif_cfg.dev, "isif_config_ycbcr:\n");
+ /*
+ * first restore the ISIF registers to default values
+ * This is important since we assume default values to be set in
+ * a lot of registers that we didn't touch
+ */
+ isif_restore_defaults(isif);
+
+ /*
+ * configure pixel format, frame format, configure video frame
+ * format, enable output to SDRAM, enable internal timing generator
+ * and 8bit pack mode
+ */
+ syn_mode = (((params->pix_fmt & ISIF_SYN_MODE_INPMOD_MASK) <<
+ ISIF_SYN_MODE_INPMOD_SHIFT) |
+ ((params->frm_fmt & ISIF_SYN_FLDMODE_MASK) <<
+ ISIF_SYN_FLDMODE_SHIFT) | ISIF_VDHDEN_ENABLE |
+ ISIF_WEN_ENABLE | ISIF_DATA_PACK_ENABLE);
+
+ /* setup BT.656 sync mode */
+ if (params->bt656_enable) {
+ isif_write(isif, ISIF_REC656IF_BT656_EN, ISIF_REC656IF);
+
+ /*
+ * configure the FID, VD, HD pin polarity,
+ * fld,hd pol positive, vd negative, 8-bit data
+ */
+ syn_mode |= ISIF_SYN_MODE_VD_POL_NEGATIVE;
+ if (isif->isif_cfg.if_type == VPFE_BT656_10BIT)
+ syn_mode |= ISIF_SYN_MODE_10BITS;
+ else
+ syn_mode |= ISIF_SYN_MODE_8BITS;
+ } else {
+ /* y/c external sync mode */
+ syn_mode |= (((params->fid_pol & ISIF_FID_POL_MASK) <<
+ ISIF_FID_POL_SHIFT) |
+ ((params->hd_pol & ISIF_HD_POL_MASK) <<
+ ISIF_HD_POL_SHIFT) |
+ ((params->vd_pol & ISIF_VD_POL_MASK) <<
+ ISIF_VD_POL_SHIFT));
+ }
+ isif_write(isif, syn_mode, ISIF_SYN_MODE);
+
+ /* configure video window */
+ isif_setwin(isif, ¶ms->win, params->frm_fmt, params->bytesperpixel);
+
+ /*
+ * configure the order of y cb cr in SDRAM, and disable latch
+ * internal register on vsync
+ */
+ if (isif->isif_cfg.if_type == VPFE_BT656_10BIT)
+ isif_write(isif,
+ (params->pix_order << ISIF_CCDCFG_Y8POS_SHIFT) |
+ ISIF_LATCH_ON_VSYNC_DISABLE |
+ ISIF_CCDCFG_BW656_10BIT,
+ ISIF_CCDCFG);
+ else
+ isif_write(isif,
+ (params->pix_order << ISIF_CCDCFG_Y8POS_SHIFT) |
+ ISIF_LATCH_ON_VSYNC_DISABLE, ISIF_CCDCFG);
+
+ /*
+ * configure the horizontal line offset. This should be a
+ * on 32 byte boundary. So clear LSB 5 bits
+ */
+ isif_write(isif, params->bytesperline, ISIF_HSIZE_OFF);
+
+ /* configure the memory line offset */
+ if (params->buf_type == ISIF_BUFTYPE_FLD_INTERLEAVED)
+ /* two fields are interleaved in memory */
+ isif_write(isif, ISIF_SDOFST_FIELD_INTERLEAVED, ISIF_SDOFST);
+
+ dev_dbg(isif->isif_cfg.dev, "\nEnd of isif_config_ycbcr...\n");
+}
+
+static void isif_config_black_clamp(struct vpfe_isif_device *isif,
+ struct isif_black_clamp *bclamp)
+{
+ u32 val;
+
+ if (!bclamp->enable) {
+ /* configure DCSub */
+ val = (bclamp->dc_sub) & ISIF_BLK_DC_SUB_MASK;
+ isif_write(isif, val, ISIF_DCSUB);
+ dev_dbg(isif->isif_cfg.dev,
+ "\nWriting 0x%x to DCSUB...\n", val);
+ isif_write(isif, ISIF_CLAMP_DEFAULT_VAL, ISIF_CLAMP);
+ dev_dbg(isif->isif_cfg.dev,
+ "\nWriting 0x0000 to CLAMP...\n");
+ return;
+ }
+ /*
+ * Configure gain, Start pixel, No of line to be avg,
+ * No of pixel/line to be avg, & Enable the Black clamping
+ */
+ val = ((bclamp->sgain & ISIF_BLK_SGAIN_MASK) |
+ ((bclamp->start_pixel & ISIF_BLK_ST_PXL_MASK) <<
+ ISIF_BLK_ST_PXL_SHIFT) |
+ ((bclamp->sample_ln & ISIF_BLK_SAMPLE_LINE_MASK) <<
+ ISIF_BLK_SAMPLE_LINE_SHIFT) |
+ ((bclamp->sample_pixel & ISIF_BLK_SAMPLE_LN_MASK) <<
+ ISIF_BLK_SAMPLE_LN_SHIFT) | ISIF_BLK_CLAMP_ENABLE);
+ isif_write(isif, val, ISIF_CLAMP);
+ dev_dbg(isif->isif_cfg.dev, "\nWriting 0x%x to CLAMP...\n", val);
+ /* If Black clamping is enable then make dcsub 0 */
+ isif_write(isif, ISIF_DCSUB_DEFAULT_VAL, ISIF_DCSUB);
+ dev_dbg(isif->isif_cfg.dev, "\nWriting 0x00000000 to DCSUB...\n");
+}
+
+static void isif_config_black_compense(struct vpfe_isif_device *isif,
+ struct isif_black_compensation *bcomp)
+{
+ u32 val;
+
+ val = ((bcomp->b & ISIF_BLK_COMP_MASK) |
+ ((bcomp->gb & ISIF_BLK_COMP_MASK) <<
+ ISIF_BLK_COMP_GB_COMP_SHIFT) |
+ ((bcomp->gr & ISIF_BLK_COMP_MASK) <<
+ ISIF_BLK_COMP_GR_COMP_SHIFT) |
+ ((bcomp->r & ISIF_BLK_COMP_MASK) <<
+ ISIF_BLK_COMP_R_COMP_SHIFT));
+ isif_write(isif, val, ISIF_BLKCMP);
+}
+
+/*
+ * isif_config_raw()
+ * This function will configure ISIF for Raw capture mode
+ */
+static void isif_config_raw(struct vpfe_isif_device *isif)
+{
+ struct isif_params_raw *params = &isif->isif_cfg.bayer;
+ struct isif_config_params_raw *config_params =
+ &isif->isif_cfg.bayer.config_params;
+ unsigned int syn_mode = 0;
+ unsigned int val;
+
+ dev_dbg(isif->isif_cfg.dev, "isif_config_raw:\n");
+
+ /* Reset ISIF */
+ isif_restore_defaults(isif);
+
+ /* Disable latching function registers on VSYNC */
+ isif_write(isif, ISIF_LATCH_ON_VSYNC_DISABLE, ISIF_CCDCFG);
+
+ /*
+ * Configure the vertical sync polarity(SYN_MODE.VDPOL),
+ * horizontal sync polarity (SYN_MODE.HDPOL), frame id polarity
+ * (SYN_MODE.FLDPOL), frame format(progressive or interlace),
+ * data size(SYNMODE.DATSIZ), &pixel format (Input mode), output
+ * SDRAM, enable internal timing generator
+ */
+ syn_mode =
+ (((params->vd_pol & ISIF_VD_POL_MASK) << ISIF_VD_POL_SHIFT) |
+ ((params->hd_pol & ISIF_HD_POL_MASK) << ISIF_HD_POL_SHIFT) |
+ ((params->fid_pol & ISIF_FID_POL_MASK) << ISIF_FID_POL_SHIFT) |
+ ((params->frm_fmt & ISIF_FRM_FMT_MASK) << ISIF_FRM_FMT_SHIFT) |
+ ((config_params->data_sz & ISIF_DATA_SZ_MASK) <<
+ ISIF_DATA_SZ_SHIFT) |
+ ((params->pix_fmt & ISIF_PIX_FMT_MASK) << ISIF_PIX_FMT_SHIFT) |
+ ISIF_WEN_ENABLE | ISIF_VDHDEN_ENABLE);
+
+ /* Enable and configure aLaw register if needed */
+ if (config_params->alaw.enable) {
+ val = ((config_params->alaw.gamma_wd &
+ ISIF_ALAW_GAMMA_WD_MASK) | ISIF_ALAW_ENABLE);
+ isif_write(isif, val, ISIF_ALAW);
+ dev_dbg(isif->isif_cfg.dev, "\nWriting 0x%x to ALAW...\n", val);
+ }
+
+ /* Configure video window */
+ isif_setwin(isif, ¶ms->win, params->frm_fmt, params->bytesperpixel);
+
+ /* Configure Black Clamp */
+ isif_config_black_clamp(isif, &config_params->blk_clamp);
+
+ /* Configure Black level compensation */
+ isif_config_black_compense(isif, &config_params->blk_comp);
+
+ /* If data size is 8 bit then pack the data */
+ if ((config_params->data_sz == ISIF_DATA_8BITS) ||
+ config_params->alaw.enable)
+ syn_mode |= ISIF_DATA_PACK_ENABLE;
+
+ /* Configure the color pattern according to mt9t001 sensor */
+/* isif_write(isif, ISIF_COLPTN_VAL, ISIF_COLPTN);
+ dev_dbg(isif->isif_cfg.dev, "\nWriting 0xBB11BB11 to COLPTN...\n"); */
+
+ /*
+ * Configure Horizontal offset register. If pack 8 is enabled then
+ * 1 pixel will take 1 byte
+ */
+
+ isif_write(isif, params->bytesperline, ISIF_HSIZE_OFF);
+ dev_dbg(isif->isif_cfg.dev, "Writing %d (%x) to HSIZE_OFF\n",
+ params->bytesperline, params->bytesperline);
+
+ /* Set value for SDOFST */
+ if (params->frm_fmt == ISIF_FRMFMT_INTERLACED) {
+ if (params->image_invert_enable) {
+ /* For intelace inverse mode */
+ isif_write(isif, ISIF_INTERLACED_IMAGE_INVERT,
+ ISIF_SDOFST);
+ dev_dbg(isif->isif_cfg.dev, "\nWriting 0x4B6D to SDOFST..\n");
+ }
+
+ else {
+ /* For intelace non inverse mode */
+ isif_write(isif, ISIF_INTERLACED_NO_IMAGE_INVERT,
+ ISIF_SDOFST);
+ dev_dbg(isif->isif_cfg.dev, "\nWriting 0x0249 to SDOFST..\n");
+ }
+ } else if (params->frm_fmt == ISIF_FRMFMT_PROGRESSIVE) {
+ isif_write(isif, ISIF_PROGRESSIVE_NO_IMAGE_INVERT,
+ ISIF_SDOFST);
+ dev_dbg(isif->isif_cfg.dev, "\nWriting 0x0000 to SDOFST...\n");
+ }
+
+ isif_write(isif, syn_mode, ISIF_SYN_MODE);
+ dev_dbg(isif->isif_cfg.dev,
+ "\nWriting 0x%x to SYN_MODE...\n", syn_mode);
+
+ dev_dbg(isif->isif_cfg.dev, "end of isif_config_raw...\n");
+ isif_readregs(isif);
+}
+
+static int isif_configure(struct vpfe_isif_device *isif)
+{
+ if (isif->isif_cfg.if_type == VPFE_RAW_BAYER)
+ isif_config_raw(isif);
+ else
+ isif_config_ycbcr(isif);
+ return 0;
+}
+
+static int isif_set_buftype(struct vpfe_isif_device *isif,
+ enum isif_buftype buf_type)
+{
+ if (isif->isif_cfg.if_type == VPFE_RAW_BAYER)
+ isif->isif_cfg.bayer.buf_type = buf_type;
+ else
+ isif->isif_cfg.ycbcr.buf_type = buf_type;
+ return 0;
+}
+
+static enum isif_buftype isif_get_buftype(struct vpfe_isif_device *isif)
+{
+ if (isif->isif_cfg.if_type == VPFE_RAW_BAYER)
+ return isif->isif_cfg.bayer.buf_type;
+
+ return isif->isif_cfg.ycbcr.buf_type;
+}
+
+static int isif_enum_pix(struct vpfe_isif_device *isif, u32 *pix, int i)
+{
+ int ret = -EINVAL;
+
+ if (isif->isif_cfg.if_type == VPFE_RAW_BAYER) {
+ if (i < ARRAY_SIZE(isif_raw_bayer_pix_formats)) {
+ *pix = isif_raw_bayer_pix_formats[i];
+ ret = 0;
+ }
+ } else {
+ if (i < ARRAY_SIZE(isif_raw_yuv_pix_formats)) {
+ *pix = isif_raw_yuv_pix_formats[i];
+ ret = 0;
+ }
+ }
+ return ret;
+}
+
+static int isif_set_pixel_format(struct vpfe_isif_device *isif, u32 pixfmt)
+{
+ dev_dbg(isif->isif_cfg.dev, "isif_set_pixel_format: if_type: %d, pixfmt:%s\n",
+ isif->isif_cfg.if_type, print_fourcc(pixfmt));
+
+ if (isif->isif_cfg.if_type == VPFE_RAW_BAYER) {
+ isif->isif_cfg.bayer.pix_fmt = ISIF_PIXFMT_RAW;
+ /*
+ * Need to clear it in case it was left on
+ * after the last capture.
+ */
+ isif->isif_cfg.bayer.config_params.alaw.enable = 0;
+
+ switch (pixfmt) {
+ case V4L2_PIX_FMT_SBGGR8:
+ isif->isif_cfg.bayer.config_params.alaw.enable = 1;
+ break;
+ case V4L2_PIX_FMT_YUYV:
+ case V4L2_PIX_FMT_UYVY:
+ case V4L2_PIX_FMT_YUV420:
+ case V4L2_PIX_FMT_NV12:
+ case V4L2_PIX_FMT_RGB565X:
+ break; /* nothing for now */
+ case V4L2_PIX_FMT_SBGGR16:
+ default:
+ return -EINVAL;
+ }
+ } else {
+ switch (pixfmt) {
+ case V4L2_PIX_FMT_YUYV:
+ isif->isif_cfg.ycbcr.pix_order = ISIF_PIXORDER_YCBYCR;
+ break;
+ case V4L2_PIX_FMT_UYVY:
+ isif->isif_cfg.ycbcr.pix_order = ISIF_PIXORDER_CBYCRY;
+ break;
+ default:
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+static u32 isif_get_pixel_format(struct vpfe_isif_device *isif)
+{
+ u32 pixfmt;
+
+ if (isif->isif_cfg.if_type == VPFE_RAW_BAYER) {
+ pixfmt = V4L2_PIX_FMT_YUYV;
+ } else {
+ if (isif->isif_cfg.ycbcr.pix_order == ISIF_PIXORDER_YCBYCR)
+ pixfmt = V4L2_PIX_FMT_YUYV;
+ else
+ pixfmt = V4L2_PIX_FMT_UYVY;
+ }
+
+ return pixfmt;
+}
+
+static int isif_set_image_window(struct vpfe_isif_device *isif,
+ struct v4l2_rect *win, unsigned int bpp)
+{
+ if (isif->isif_cfg.if_type == VPFE_RAW_BAYER) {
+ isif->isif_cfg.bayer.win = *win;
+ isif->isif_cfg.bayer.bytesperpixel = bpp;
+ isif->isif_cfg.bayer.bytesperline = ALIGN(win->width * bpp, 32);
+ } else {
+ isif->isif_cfg.ycbcr.win = *win;
+ isif->isif_cfg.ycbcr.bytesperpixel = bpp;
+ isif->isif_cfg.ycbcr.bytesperline = ALIGN(win->width * bpp, 32);
+ }
+
+ return 0;
+}
+
+static void isif_get_image_window(struct vpfe_isif_device *isif,
+ struct v4l2_rect *win)
+{
+ if (isif->isif_cfg.if_type == VPFE_RAW_BAYER)
+ *win = isif->isif_cfg.bayer.win;
+ else
+ *win = isif->isif_cfg.ycbcr.win;
+}
+
+static unsigned int isif_get_line_length(struct vpfe_isif_device *isif)
+{
+ if (isif->isif_cfg.if_type == VPFE_RAW_BAYER)
+ return isif->isif_cfg.bayer.bytesperline;
+
+ return isif->isif_cfg.ycbcr.bytesperline;
+}
+
+static int isif_set_frame_format(struct vpfe_isif_device *isif,
+ enum isif_frmfmt frm_fmt)
+{
+ if (isif->isif_cfg.if_type == VPFE_RAW_BAYER)
+ isif->isif_cfg.bayer.frm_fmt = frm_fmt;
+ else
+ isif->isif_cfg.ycbcr.frm_fmt = frm_fmt;
+
+ return 0;
+}
+
+static enum isif_frmfmt isif_get_frame_format(struct vpfe_isif_device *isif)
+{
+ if (isif->isif_cfg.if_type == VPFE_RAW_BAYER)
+ return isif->isif_cfg.bayer.frm_fmt;
+
+ return isif->isif_cfg.ycbcr.frm_fmt;
+}
+
+static int isif_getfid(struct vpfe_isif_device *isif)
+{
+ return (isif_read(isif, ISIF_SYN_MODE) >> 15) & 1;
+}
+
+/* misc operations */
+static inline void isif_setfbaddr(struct vpfe_isif_device *isif,
+ unsigned long addr)
+{
+ isif_write(isif, addr & 0xffffffe0, ISIF_SDR_ADDR);
+}
+
+static int isif_set_hw_if_params(struct vpfe_isif_device *isif,
+ struct vpfe_hw_if_param *params)
+{
+ isif->isif_cfg.if_type = params->if_type;
+
+ switch (params->if_type) {
+ case VPFE_BT656:
+ case VPFE_YCBCR_SYNC_16:
+ case VPFE_YCBCR_SYNC_8:
+ case VPFE_BT656_10BIT:
+ isif->isif_cfg.ycbcr.vd_pol = params->vdpol;
+ isif->isif_cfg.ycbcr.hd_pol = params->hdpol;
+ break;
+ case VPFE_RAW_BAYER:
+ isif->isif_cfg.bayer.vd_pol = params->vdpol;
+ isif->isif_cfg.bayer.hd_pol = params->hdpol;
+ if (params->bus_width == 10)
+ isif->isif_cfg.bayer.config_params.data_sz =
+ ISIF_DATA_10BITS;
+ else
+ isif->isif_cfg.bayer.config_params.data_sz =
+ ISIF_DATA_8BITS;
+ dev_dbg(isif->isif_cfg.dev, "params.bus_width: %d\n",
+ params->bus_width);
+ dev_dbg(isif->isif_cfg.dev, "config_params.data_sz: %d\n",
+ isif->isif_cfg.bayer.config_params.data_sz);
+ break;
+
+ default:
+ /* TODO add support for raw bayer here */
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static void isif_save_context(struct vpfe_isif_device *isif)
+{
+ isif->isif_ctx[ISIF_PCR >> 2] = isif_read(isif, ISIF_PCR);
+ isif->isif_ctx[ISIF_SYN_MODE >> 2] = isif_read(isif, ISIF_SYN_MODE);
+ isif->isif_ctx[ISIF_HD_VD_WID >> 2] = isif_read(isif, ISIF_HD_VD_WID);
+ isif->isif_ctx[ISIF_PIX_LINES >> 2] = isif_read(isif, ISIF_PIX_LINES);
+ isif->isif_ctx[ISIF_HORZ_INFO >> 2] = isif_read(isif, ISIF_HORZ_INFO);
+ isif->isif_ctx[ISIF_VERT_START >> 2] = isif_read(isif, ISIF_VERT_START);
+ isif->isif_ctx[ISIF_VERT_LINES >> 2] = isif_read(isif, ISIF_VERT_LINES);
+ isif->isif_ctx[ISIF_CULLING >> 2] = isif_read(isif, ISIF_CULLING);
+ isif->isif_ctx[ISIF_HSIZE_OFF >> 2] = isif_read(isif, ISIF_HSIZE_OFF);
+ isif->isif_ctx[ISIF_SDOFST >> 2] = isif_read(isif, ISIF_SDOFST);
+ isif->isif_ctx[ISIF_SDR_ADDR >> 2] = isif_read(isif, ISIF_SDR_ADDR);
+ isif->isif_ctx[ISIF_CLAMP >> 2] = isif_read(isif, ISIF_CLAMP);
+ isif->isif_ctx[ISIF_DCSUB >> 2] = isif_read(isif, ISIF_DCSUB);
+ isif->isif_ctx[ISIF_COLPTN >> 2] = isif_read(isif, ISIF_COLPTN);
+ isif->isif_ctx[ISIF_BLKCMP >> 2] = isif_read(isif, ISIF_BLKCMP);
+ isif->isif_ctx[ISIF_VDINT >> 2] = isif_read(isif, ISIF_VDINT);
+ isif->isif_ctx[ISIF_ALAW >> 2] = isif_read(isif, ISIF_ALAW);
+ isif->isif_ctx[ISIF_REC656IF >> 2] = isif_read(isif, ISIF_REC656IF);
+ isif->isif_ctx[ISIF_CCDCFG >> 2] = isif_read(isif, ISIF_CCDCFG);
+}
+
+static void isif_restore_context(struct vpfe_isif_device *isif)
+{
+ isif_write(isif, isif->isif_ctx[ISIF_SYN_MODE >> 2], ISIF_SYN_MODE);
+ isif_write(isif, isif->isif_ctx[ISIF_HD_VD_WID >> 2], ISIF_HD_VD_WID);
+ isif_write(isif, isif->isif_ctx[ISIF_PIX_LINES >> 2], ISIF_PIX_LINES);
+ isif_write(isif, isif->isif_ctx[ISIF_HORZ_INFO >> 2], ISIF_HORZ_INFO);
+ isif_write(isif, isif->isif_ctx[ISIF_VERT_START >> 2], ISIF_VERT_START);
+ isif_write(isif, isif->isif_ctx[ISIF_VERT_LINES >> 2], ISIF_VERT_LINES);
+ isif_write(isif, isif->isif_ctx[ISIF_CULLING >> 2], ISIF_CULLING);
+ isif_write(isif, isif->isif_ctx[ISIF_HSIZE_OFF >> 2], ISIF_HSIZE_OFF);
+ isif_write(isif, isif->isif_ctx[ISIF_SDOFST >> 2], ISIF_SDOFST);
+ isif_write(isif, isif->isif_ctx[ISIF_SDR_ADDR >> 2], ISIF_SDR_ADDR);
+ isif_write(isif, isif->isif_ctx[ISIF_CLAMP >> 2], ISIF_CLAMP);
+ isif_write(isif, isif->isif_ctx[ISIF_DCSUB >> 2], ISIF_DCSUB);
+ isif_write(isif, isif->isif_ctx[ISIF_COLPTN >> 2], ISIF_COLPTN);
+ isif_write(isif, isif->isif_ctx[ISIF_BLKCMP >> 2], ISIF_BLKCMP);
+ isif_write(isif, isif->isif_ctx[ISIF_VDINT >> 2], ISIF_VDINT);
+ isif_write(isif, isif->isif_ctx[ISIF_ALAW >> 2], ISIF_ALAW);
+ isif_write(isif, isif->isif_ctx[ISIF_REC656IF >> 2], ISIF_REC656IF);
+ isif_write(isif, isif->isif_ctx[ISIF_CCDCFG >> 2], ISIF_CCDCFG);
+ isif_write(isif, isif->isif_ctx[ISIF_PCR >> 2], ISIF_PCR);
+}
+
+static void isif_clear_intr(struct vpfe_isif_device *isif, int vdint)
+{
+ unsigned int vpfe_int_status;
+
+ vpfe_int_status = isif_read(isif, ISIF_VPFE_IRQ_STATUS);
+
+ switch (vdint) {
+ /* VD0 interrrupt */
+ case ISIF_VPFE_VDINT0:
+ vpfe_int_status &= ~ISIF_VPFE_VDINT0;
+ vpfe_int_status |= ISIF_VPFE_VDINT0;
+ break;
+ /* VD1 interrrupt */
+ case ISIF_VPFE_VDINT1:
+ vpfe_int_status &= ~ISIF_VPFE_VDINT1;
+ vpfe_int_status |= ISIF_VPFE_VDINT1;
+ break;
+ /* VD2 interrrupt */
+ case ISIF_VPFE_VDINT2:
+ vpfe_int_status &= ~ISIF_VPFE_VDINT2;
+ vpfe_int_status |= ISIF_VPFE_VDINT2;
+ break;
+ /* Clear all interrrupts */
+ default:
+ vpfe_int_status &= ~(ISIF_VPFE_VDINT0 |
+ ISIF_VPFE_VDINT1 |
+ ISIF_VPFE_VDINT2);
+ vpfe_int_status |= (ISIF_VPFE_VDINT0 |
+ ISIF_VPFE_VDINT1 |
+ ISIF_VPFE_VDINT2);
+ break;
+ }
+ /* Clear specific VDINT from the status register */
+ isif_write(isif, vpfe_int_status, ISIF_VPFE_IRQ_STATUS);
+
+ vpfe_int_status = isif_read(isif, ISIF_VPFE_IRQ_STATUS);
+
+ /* Acknowledge that we are done with all interrupts */
+ isif_write(isif, 1, ISIF_VPFE_IRQ_EOI);
+}
+
+static int isif_intr_status(struct vpfe_isif_device *isif)
+{
+ return isif_read(isif, ISIF_VPFE_IRQ_STATUS);
+}
+
+static int isif_intr_enable(struct vpfe_isif_device *isif, int vdint)
+{
+ unsigned int intr;
+
+ dev_vdbg(isif->isif_cfg.dev, "isif_intr_enable(%d) ", vdint);
+ isif_write(isif, vdint, ISIF_VPFE_IRQ_ENABLE_SET);
+ intr = isif_read(isif, ISIF_VPFE_IRQ_ENABLE_SET);
+ dev_vdbg(isif->isif_cfg.dev, "irq_enable_set: %x\n", intr);
+
+ return 0;
+}
+
+static int isif_intr_disable(struct vpfe_isif_device *isif, int vdint)
+{
+ unsigned int intr;
+
+ dev_vdbg(isif->isif_cfg.dev, "isif_intr_disable(%d) ", vdint);
+ isif_write(isif, vdint, ISIF_VPFE_IRQ_ENABLE_CLR);
+ intr = isif_read(isif, ISIF_VPFE_IRQ_ENABLE_CLR);
+ dev_vdbg(isif->isif_cfg.dev, "irq_enable_CLR: %x\n", intr);
+
+ return 0;
+}
+
+int isif_remove(struct vpfe_isif_device *isif, struct platform_device *pdev)
+{
+ struct resource *res;
+
+ dev_vdbg(isif->isif_cfg.dev, "isif_remove\n");
+
+ pm_runtime_disable(&pdev->dev);
+ iounmap(isif->isif_cfg.base_addr);
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (res)
+ release_mem_region(res->start, resource_size(res));
+
+ return 0;
+}
+
+int isif_suspend(struct vpfe_isif_device *isif, struct device *dev)
+{
+ dev_dbg(isif->isif_cfg.dev, "isif_suspend\n");
+
+ pm_runtime_get_sync(dev);
+ isif_module_enable(isif, 1);
+
+ /* Save ISIF context */
+ isif_save_context(isif);
+
+ /* Disable ISIF */
+ isif_enable(isif, 0);
+ isif_module_enable(isif, 0);
+ /* Disable both master and slave clock */
+ pm_runtime_put_sync(dev);
+
+ return 0;
+}
+
+int isif_resume(struct vpfe_isif_device *isif, struct device *dev)
+{
+ dev_dbg(isif->isif_cfg.dev, "isif_resume\n");
+
+ /* Enable both master and slave clock */
+ pm_runtime_get_sync(dev);
+ isif_module_enable(isif, 1);
+ /* Restore ISIF context */
+ isif_restore_context(isif);
+
+ isif_module_enable(isif, 0);
+ pm_runtime_put_sync(dev);
+
+ return 0;
+}
+
+/*
+ * vpfe_isif_init() - Initialize V4L2 subdev and media entity
+ * @isif: VPFE isif module
+ * @pdev: Pointer to platform device structure.
+ * Return 0 on success and a negative error code on failure.
+ */
+
+static const struct isif_hw_ops isif_ops = {
+ .open = isif_open,
+ .close = isif_close,
+ .enable = isif_enable,
+ .set_hw_if_params = isif_set_hw_if_params,
+ .set_params = isif_set_params,
+ .configure = isif_configure,
+ .set_buftype = isif_set_buftype,
+ .get_buftype = isif_get_buftype,
+ .enum_pix = isif_enum_pix,
+ .set_pixel_format = isif_set_pixel_format,
+ .get_pixel_format = isif_get_pixel_format,
+ .set_frame_format = isif_set_frame_format,
+ .get_frame_format = isif_get_frame_format,
+ .set_image_window = isif_set_image_window,
+ .get_image_window = isif_get_image_window,
+ .get_line_length = isif_get_line_length,
+ .setfbaddr = isif_setfbaddr,
+ .getfid = isif_getfid,
+ .clear_intr = isif_clear_intr,
+ .intr_status = isif_intr_status,
+ .intr_enable = isif_intr_enable,
+ .intr_disable = isif_intr_disable,
+};
+
+static void isif_config_defaults(struct vpfe_isif_device *isif)
+{
+ isif->isif_cfg.if_type = VPFE_RAW_BAYER;
+
+ isif->isif_cfg.ycbcr.pix_fmt = ISIF_PIXFMT_YCBCR_8BIT;
+ isif->isif_cfg.ycbcr.frm_fmt = ISIF_FRMFMT_INTERLACED;
+ isif->isif_cfg.ycbcr.fid_pol = VPFE_PINPOL_POSITIVE;
+ isif->isif_cfg.ycbcr.vd_pol = VPFE_PINPOL_POSITIVE;
+ isif->isif_cfg.ycbcr.hd_pol = VPFE_PINPOL_POSITIVE;
+ isif->isif_cfg.ycbcr.pix_order = ISIF_PIXORDER_CBYCRY;
+ isif->isif_cfg.ycbcr.buf_type = ISIF_BUFTYPE_FLD_INTERLEAVED;
+ /* ISIF_WIN_PAL */
+ isif->isif_cfg.ycbcr.win.left = 0;
+ isif->isif_cfg.ycbcr.win.top = 0;
+ isif->isif_cfg.ycbcr.win.width = 720;
+ isif->isif_cfg.ycbcr.win.height = 576;
+ isif->isif_cfg.ycbcr.bt656_enable = 1;
+
+ isif->isif_cfg.bayer.pix_fmt = ISIF_PIXFMT_RAW;
+ isif->isif_cfg.bayer.frm_fmt = ISIF_FRMFMT_PROGRESSIVE;
+ isif->isif_cfg.bayer.fid_pol = VPFE_PINPOL_POSITIVE;
+ isif->isif_cfg.bayer.vd_pol = VPFE_PINPOL_POSITIVE;
+ isif->isif_cfg.bayer.hd_pol = VPFE_PINPOL_POSITIVE;
+ /* ISIF_WIN_SVGA */
+ isif->isif_cfg.bayer.win.left = 0;
+ isif->isif_cfg.bayer.win.top = 0;
+ isif->isif_cfg.bayer.win.width = 800;
+ isif->isif_cfg.bayer.win.height = 600;
+ isif->isif_cfg.bayer.config_params.data_sz = ISIF_DATA_8BITS;
+ isif->isif_cfg.bayer.config_params.alaw.gamma_wd = ISIF_GAMMA_BITS_09_0;
+}
+
+int vpfe_isif_init(struct vpfe_isif_device *isif, struct platform_device *pdev)
+{
+ struct resource *res;
+ int status = 0;
+
+ dev_dbg(&pdev->dev, "vpfe_isif_init\n");
+
+ if (!isif) {
+ dev_err(&pdev->dev, "Failed to init isif device: isif is null\n");
+ return -EFAULT;
+ }
+
+ strncpy(isif->name, "AM437x ISIF", sizeof(isif->name));
+ isif->owner = THIS_MODULE;
+
+ dev_dbg(&pdev->dev, "vpfe_isif_init: %s\n", isif->name);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ status = -ENODEV;
+ goto fail_nores;
+ }
+
+ res = request_mem_region(res->start, resource_size(res), res->name);
+ if (!res) {
+ status = -EBUSY;
+ goto fail_nores;
+ }
+
+ isif->isif_cfg.base_addr =
+ ioremap_nocache(res->start, resource_size(res));
+ if (!isif->isif_cfg.base_addr) {
+ status = -ENOMEM;
+ goto fail_nomem;
+ }
+
+ /* not sure we still need this but keeping it for
+ * 1st pass multi-instance mods
+ */
+ isif->isif_cfg.dev = &pdev->dev;
+
+ /* Enabling module functional clock */
+ pm_runtime_enable(&pdev->dev);
+
+ /* for now just enable it here instead of waiting for the open */
+ pm_runtime_get_sync(&pdev->dev);
+
+ /* Populate the function pointers table */
+ isif->hw_ops = isif_ops;
+ isif_config_defaults(isif);
+ pm_runtime_put_sync(&pdev->dev);
+
+ return 0;
+
+fail_nomem:
+ release_mem_region(res->start, resource_size(res));
+fail_nores:
+ isif_remove(isif, pdev);
+ return status;
+}
+
+/*
+ * vpfe_isif_cleanup - isif module cleanup
+ * @isif: pointer to isif subdevice
+ * @dev: pointer to platform device structure
+ */
+void
+vpfe_isif_cleanup(struct vpfe_isif_device *isif, struct platform_device *pdev)
+{
+ isif_remove(isif, pdev);
+}
diff --git a/drivers/media/platform/ti-vpfe/am437x_isif.h b/drivers/media/platform/ti-vpfe/am437x_isif.h
new file mode 100644
index 0000000..c8af122
--- /dev/null
+++ b/drivers/media/platform/ti-vpfe/am437x_isif.h
@@ -0,0 +1,355 @@
+/*
+ * TI AM437x Image Sensor Interface device API
+ *
+ * Copyright (C) 2013 - 2014 Texas Instruments, Inc.
+ *
+ * Benoit Parrot <bparrot@xxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _AM437X_ISIF_H
+#define _AM437X_ISIF_H
+
+#ifdef __KERNEL__
+#include <linux/videodev2.h>
+#include <linux/device.h>
+#include <linux/io.h>
+#include "am437x_isif_regs.h"
+#include "vpfe_capture.h"
+
+enum isif_pixfmt {
+ ISIF_PIXFMT_RAW,
+ ISIF_PIXFMT_YCBCR_16BIT,
+ ISIF_PIXFMT_YCBCR_8BIT
+};
+
+enum isif_frmfmt {
+ ISIF_FRMFMT_PROGRESSIVE,
+ ISIF_FRMFMT_INTERLACED
+};
+
+/* PIXEL ORDER IN MEMORY from LSB to MSB */
+/* only applicable for 8-bit input mode */
+enum isif_pixorder {
+ ISIF_PIXORDER_YCBYCR,
+ ISIF_PIXORDER_CBYCRY,
+};
+
+enum isif_buftype {
+ ISIF_BUFTYPE_FLD_INTERLEAVED,
+ ISIF_BUFTYPE_FLD_SEPARATED
+};
+
+
+/* enum for No of pixel per line to be avg. in Black Clamping*/
+enum isif_sample_length {
+ ISIF_SAMPLE_1PIXELS,
+ ISIF_SAMPLE_2PIXELS,
+ ISIF_SAMPLE_4PIXELS,
+ ISIF_SAMPLE_8PIXELS,
+ ISIF_SAMPLE_16PIXELS
+};
+
+/* enum for No of lines in Black Clamping */
+enum isif_sample_line {
+ ISIF_SAMPLE_1LINES,
+ ISIF_SAMPLE_2LINES,
+ ISIF_SAMPLE_4LINES,
+ ISIF_SAMPLE_8LINES,
+ ISIF_SAMPLE_16LINES
+};
+
+/* enum for Alaw gamma width */
+enum isif_gamma_width {
+ ISIF_GAMMA_BITS_15_6, /* use bits 15-6 for gamma */
+ ISIF_GAMMA_BITS_14_5,
+ ISIF_GAMMA_BITS_13_4,
+ ISIF_GAMMA_BITS_12_3,
+ ISIF_GAMMA_BITS_11_2,
+ ISIF_GAMMA_BITS_10_1,
+ ISIF_GAMMA_BITS_09_0 /* use bits 9-0 for gamma */
+};
+
+/* returns the highest bit used for the gamma */
+static inline u8 isif_gamma_width_max_bit(enum isif_gamma_width width)
+{
+ return 15 - width;
+}
+
+enum isif_data_size {
+ ISIF_DATA_16BITS,
+ ISIF_DATA_15BITS,
+ ISIF_DATA_14BITS,
+ ISIF_DATA_13BITS,
+ ISIF_DATA_12BITS,
+ ISIF_DATA_11BITS,
+ ISIF_DATA_10BITS,
+ ISIF_DATA_8BITS
+};
+
+/* returns the highest bit used for this data size */
+static inline u8 isif_data_size_max_bit(enum isif_data_size sz)
+{
+ return sz == ISIF_DATA_8BITS ? 7 : 15 - sz;
+}
+
+/* structure for ALaw */
+struct isif_a_law {
+ /* Enable/disable A-Law */
+ unsigned char enable;
+ /* Gamma Width Input */
+ enum isif_gamma_width gamma_wd;
+};
+
+/* structure for Black Clamping */
+struct isif_black_clamp {
+ unsigned char enable;
+ /* only if bClampEnable is TRUE */
+ enum isif_sample_length sample_pixel;
+ /* only if bClampEnable is TRUE */
+ enum isif_sample_line sample_ln;
+ /* only if bClampEnable is TRUE */
+ unsigned short start_pixel;
+ /* only if bClampEnable is TRUE */
+ unsigned short sgain;
+ /* only if bClampEnable is FALSE */
+ unsigned short dc_sub;
+};
+
+/* structure for Black Level Compensation */
+struct isif_black_compensation {
+ /* Constant value to subtract from Red component */
+ char r;
+ /* Constant value to subtract from Gr component */
+ char gr;
+ /* Constant value to subtract from Blue component */
+ char b;
+ /* Constant value to subtract from Gb component */
+ char gb;
+};
+
+/* Structure for ISIF configuration parameters for raw capture mode passed
+ * by application
+ */
+struct isif_config_params_raw {
+ /* data size value from 8 to 16 bits */
+ enum isif_data_size data_sz;
+ /* Structure for Optional A-Law */
+ struct isif_a_law alaw;
+ /* Structure for Optical Black Clamp */
+ struct isif_black_clamp blk_clamp;
+ /* Structure for Black Compensation */
+ struct isif_black_compensation blk_comp;
+};
+
+
+/* Define for extra pixel/line and extra lines/frame */
+#define NUM_EXTRAPIXELS 8
+#define NUM_EXTRALINES 8
+
+/* settings for commonly used video formats */
+#define ISIF_WIN_PAL {0, 0, 720, 576}
+/* ntsc square pixel */
+#define ISIF_WIN_VGA {0, 0, (640 + NUM_EXTRAPIXELS), (480 + NUM_EXTRALINES)}
+#define ISIF_WIN_SVGA {0, 0, (800), (600)}
+
+/* Structure for ISIF configuration parameters for raw capture mode */
+struct isif_params_raw {
+ /* pixel format */
+ enum isif_pixfmt pix_fmt;
+ /* progressive or interlaced frame */
+ enum isif_frmfmt frm_fmt;
+ /* v4l2 format for reference */
+ struct v4l2_format fmt;
+ /* video window */
+ struct v4l2_rect win;
+ /* Current Format Bytes Per Pixels */
+ unsigned int bytesperpixel;
+ /* Current Format Bytes per Lines
+ * (Aligned to 32 bytes) used for HORZ_INFO
+ */
+ unsigned int bytesperline;
+ /* field id polarity */
+ enum vpfe_pin_pol fid_pol;
+ /* vertical sync polarity */
+ enum vpfe_pin_pol vd_pol;
+ /* horizontal sync polarity */
+ enum vpfe_pin_pol hd_pol;
+ /* interleaved or separated fields */
+ enum isif_buftype buf_type;
+ /*
+ * enable to store the image in inverse
+ * order in memory(bottom to top)
+ */
+ unsigned char image_invert_enable;
+ /* configurable paramaters */
+ struct isif_config_params_raw config_params;
+};
+
+struct isif_params_ycbcr {
+ /* pixel format */
+ enum isif_pixfmt pix_fmt;
+ /* progressive or interlaced frame */
+ enum isif_frmfmt frm_fmt;
+ /* v4l2 format for reference */
+ struct v4l2_format fmt;
+ /* video window */
+ struct v4l2_rect win;
+ /* Current Format Bytes Per Pixels */
+ unsigned int bytesperpixel;
+ /* Current Format Bytes per Lines
+ * (Aligned to 32 bytes) used for HORZ_INFO
+ */
+ unsigned int bytesperline;
+ /* field id polarity */
+ enum vpfe_pin_pol fid_pol;
+ /* vertical sync polarity */
+ enum vpfe_pin_pol vd_pol;
+ /* horizontal sync polarity */
+ enum vpfe_pin_pol hd_pol;
+ /* enable BT.656 embedded sync mode */
+ int bt656_enable;
+ /* cb:y:cr:y or y:cb:y:cr in memory */
+ enum isif_pixorder pix_order;
+ /* interleaved or separated fields */
+ enum isif_buftype buf_type;
+};
+
+/*
+ * isif operational configuration
+ */
+struct isif_oper_config {
+ struct device *dev;
+ /* ISIF interface type */
+ enum vpfe_hw_if_type if_type;
+ /* Raw Bayer configuration */
+ struct isif_params_raw bayer;
+ /* YCbCr configuration */
+ struct isif_params_ycbcr ycbcr;
+ /* ccdc base address */
+ void __iomem *base_addr;
+};
+
+
+/*
+ * isif hw operations
+ */
+struct vpfe_isif_device;
+
+struct isif_hw_ops {
+ /* Pointer to initialize function to initialize isif device */
+ int (*open)(struct vpfe_isif_device *isif, struct device *dev);
+ /* Pointer to deinitialize function */
+ int (*close)(struct vpfe_isif_device *isif,
+ struct device *dev);
+ /* set isif base address */
+ void (*set_isif_base)(struct vpfe_isif_device *isif,
+ void *base, int size);
+ /* Pointer to function to enable or disable isif */
+ void (*enable)(struct vpfe_isif_device *isif, int en);
+ /* reset sbl. only for 6446 */
+ void (*reset)(struct vpfe_isif_device *isif);
+ /* enable output to sdram */
+ void (*enable_out_to_sdram)(struct vpfe_isif_device *isif,
+ int en);
+ /* Pointer to function to set hw parameters */
+ int (*set_hw_if_params)(struct vpfe_isif_device *isif,
+ struct vpfe_hw_if_param *param);
+ /* get interface parameters */
+ int (*get_hw_if_params)(struct vpfe_isif_device *isif,
+ struct vpfe_hw_if_param *param);
+ /*
+ * Pointer to function to set parameters. Used
+ * for implementing VPFE_S_ISIF_PARAMS
+ */
+ int (*set_params)(struct vpfe_isif_device *isif,
+ void __user *params);
+ /*
+ * Pointer to function to get parameter. Used
+ * for implementing VPFE_G_ISIF_PARAMS
+ */
+ int (*get_params)(struct vpfe_isif_device *isif,
+ void __user *params);
+ /* Pointer to function to configure isif */
+ int (*configure)(struct vpfe_isif_device *isif);
+
+ /* Pointer to function to set buffer type */
+ int (*set_buftype)(struct vpfe_isif_device *isif,
+ enum isif_buftype buf_type);
+ /* Pointer to function to get buffer type */
+ enum isif_buftype (*get_buftype)(struct vpfe_isif_device *isif);
+ /* Pointer to function to set frame format */
+ int (*set_frame_format)(struct vpfe_isif_device *isif,
+ enum isif_frmfmt frm_fmt);
+ /* Pointer to function to get frame format */
+ enum isif_frmfmt (*get_frame_format)(struct vpfe_isif_device *isif);
+ /* enumerate hw pix formats */
+ int (*enum_pix)(struct vpfe_isif_device *isif, u32 *hw_pix, int i);
+ /* Pointer to function to set buffer type */
+ u32 (*get_pixel_format)(struct vpfe_isif_device *isif);
+ /* Pointer to function to get pixel format. */
+ int (*set_pixel_format)(struct vpfe_isif_device *isif, u32 pixfmt);
+ /* Pointer to function to set image window */
+ int (*set_image_window)(struct vpfe_isif_device *isif,
+ struct v4l2_rect *win, unsigned int bpp);
+ /* Pointer to function to set image window */
+ void (*get_image_window)(struct vpfe_isif_device *isif,
+ struct v4l2_rect *win);
+ /* Pointer to function to get line length */
+ unsigned int (*get_line_length)(struct vpfe_isif_device *isif);
+
+ /* Query ISIF control IDs */
+ int (*queryctrl)(struct vpfe_isif_device *isif,
+ struct v4l2_queryctrl *qctrl);
+ /* Set ISIF control */
+ int (*set_control)(struct vpfe_isif_device *isif,
+ struct v4l2_control *ctrl);
+ /* Get ISIF control */
+ int (*get_control)(struct vpfe_isif_device *isif,
+ struct v4l2_control *ctrl);
+ /* Clear Interrupt */
+ void (*clear_intr)(struct vpfe_isif_device *isif, int vdint);
+ /* Read Interrupt Status */
+ int (*intr_status)(struct vpfe_isif_device *isif);
+ /* Enable Interrupt */
+ int (*intr_enable)(struct vpfe_isif_device *isif, int vdint);
+ /* Disable Interrupt */
+ int (*intr_disable)(struct vpfe_isif_device *isif, int vdint);
+
+ /* Pointer to function to set frame buffer address */
+ void (*setfbaddr)(struct vpfe_isif_device *isif, unsigned long addr);
+ /* Pointer to function to get field id */
+ int (*getfid)(struct vpfe_isif_device *isif);
+};
+
+struct vpfe_isif_device {
+ /* isif device name */
+ char name[32];
+ /* module owner */
+ struct module *owner;
+ struct isif_oper_config isif_cfg;
+ /* hw ops */
+ struct isif_hw_ops hw_ops;
+ /* ISIF Save/Restore context */
+ u32 isif_ctx[ISIF_REG_END / sizeof(u32)];
+
+};
+
+int vpfe_isif_init(struct vpfe_isif_device *isif,
+ struct platform_device *pdev);
+void vpfe_isif_cleanup(struct vpfe_isif_device *isif,
+ struct platform_device *pdev);
+int isif_remove(struct vpfe_isif_device *isif, struct platform_device *pdev);
+int isif_suspend(struct vpfe_isif_device *isif, struct device *dev);
+int isif_resume(struct vpfe_isif_device *isif, struct device *dev);
+
+#endif
+#endif
diff --git a/drivers/media/platform/ti-vpfe/am437x_isif_regs.h b/drivers/media/platform/ti-vpfe/am437x_isif_regs.h
new file mode 100644
index 0000000..843e3ff
--- /dev/null
+++ b/drivers/media/platform/ti-vpfe/am437x_isif_regs.h
@@ -0,0 +1,144 @@
+/*
+ * TI AM437x Image Sensor Interface Registers
+ *
+ * Copyright (C) 2013 - 2014 Texas Instruments, Inc.
+ *
+ * Benoit Parrot <bparrot@xxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _AM437X_ISIF_REGS_H
+#define _AM437X_ISIF_REGS_H
+
+/**************************************************************************\
+* Register OFFSET Definitions
+\**************************************************************************/
+#define ISIF_PID 0x0
+#define ISIF_PCR 0x4
+#define ISIF_SYN_MODE 0x8
+#define ISIF_HD_VD_WID 0xc
+#define ISIF_PIX_LINES 0x10
+#define ISIF_HORZ_INFO 0x14
+#define ISIF_VERT_START 0x18
+#define ISIF_VERT_LINES 0x1c
+#define ISIF_CULLING 0x20
+#define ISIF_HSIZE_OFF 0x24
+#define ISIF_SDOFST 0x28
+#define ISIF_SDR_ADDR 0x2c
+#define ISIF_CLAMP 0x30
+#define ISIF_DCSUB 0x34
+#define ISIF_COLPTN 0x38
+#define ISIF_BLKCMP 0x3c
+#define ISIF_VDINT 0x48
+#define ISIF_ALAW 0x4c
+#define ISIF_REC656IF 0x50
+#define ISIF_CCDCFG 0x54
+#define ISIF_DMA_CNTL 0x98
+#define ISIF_VPFE_SYSCONFIG 0x104
+#define ISIF_VPFE_CONFIG 0x108
+#define ISIF_VPFE_IRQ_EOI 0x110
+#define ISIF_VPFE_IRQ_STATUS_RAW 0x114
+#define ISIF_VPFE_IRQ_STATUS 0x118
+#define ISIF_VPFE_IRQ_ENABLE_SET 0x11c
+#define ISIF_VPFE_IRQ_ENABLE_CLR 0x120
+#define ISIF_REG_END 0x124
+
+/***************************************************************
+* Define for various register bit mask and shifts for ISIF
+****************************************************************/
+#define ISIF_FID_POL_MASK 1
+#define ISIF_FID_POL_SHIFT 4
+#define ISIF_HD_POL_MASK 1
+#define ISIF_HD_POL_SHIFT 3
+#define ISIF_VD_POL_MASK 1
+#define ISIF_VD_POL_SHIFT 2
+#define ISIF_HSIZE_OFF_MASK 0xffffffe0
+#define ISIF_32BYTE_ALIGN_VAL 31
+#define ISIF_FRM_FMT_MASK 0x1
+#define ISIF_FRM_FMT_SHIFT 7
+#define ISIF_DATA_SZ_MASK 7
+#define ISIF_DATA_SZ_SHIFT 8
+#define ISIF_PIX_FMT_MASK 3
+#define ISIF_PIX_FMT_SHIFT 12
+#define ISIF_VP2SDR_DISABLE 0xFFFBFFFF
+#define ISIF_WEN_ENABLE (1 << 17)
+#define ISIF_SDR2RSZ_DISABLE 0xFFF7FFFF
+#define ISIF_VDHDEN_ENABLE (1 << 16)
+#define ISIF_LPF_ENABLE (1 << 14)
+#define ISIF_ALAW_ENABLE (1 << 3)
+#define ISIF_ALAW_GAMMA_WD_MASK 7
+#define ISIF_BLK_CLAMP_ENABLE (1 << 31)
+#define ISIF_BLK_SGAIN_MASK 0x1F
+#define ISIF_BLK_ST_PXL_MASK 0x7FFF
+#define ISIF_BLK_ST_PXL_SHIFT 10
+#define ISIF_BLK_SAMPLE_LN_MASK 7
+#define ISIF_BLK_SAMPLE_LN_SHIFT 28
+#define ISIF_BLK_SAMPLE_LINE_MASK 7
+#define ISIF_BLK_SAMPLE_LINE_SHIFT 25
+#define ISIF_BLK_DC_SUB_MASK 0x03FFF
+#define ISIF_BLK_COMP_MASK 0xFF
+#define ISIF_BLK_COMP_GB_COMP_SHIFT 8
+#define ISIF_BLK_COMP_GR_COMP_SHIFT 16
+#define ISIF_BLK_COMP_R_COMP_SHIFT 24
+#define ISIF_LATCH_ON_VSYNC_DISABLE (1 << 15)
+#define ISIF_DATA_PACK_ENABLE (1 << 11)
+#define ISIF_HORZ_INFO_SPH_SHIFT 16
+#define ISIF_VERT_START_SLV0_SHIFT 16
+#define ISIF_VDINT_VDINT0_SHIFT 16
+#define ISIF_VDINT_VDINT1_MASK 0xFFFF
+#define ISIF_PPC_RAW 1
+#define ISIF_DCSUB_DEFAULT_VAL 0
+#define ISIF_CLAMP_DEFAULT_VAL 0
+#define ISIF_COLPTN_VAL 0xBB11BB11
+#define ISIF_TWO_BYTES_PER_PIXEL 2
+#define ISIF_INTERLACED_IMAGE_INVERT 0x4B6D
+#define ISIF_INTERLACED_NO_IMAGE_INVERT 0x0249
+#define ISIF_PROGRESSIVE_IMAGE_INVERT 0x4000
+#define ISIF_PROGRESSIVE_NO_IMAGE_INVERT 0
+#define ISIF_INTERLACED_HEIGHT_SHIFT 1
+#define ISIF_SYN_MODE_INPMOD_SHIFT 12
+#define ISIF_SYN_MODE_INPMOD_MASK 3
+#define ISIF_SYN_MODE_8BITS (7 << 8)
+#define ISIF_SYN_MODE_10BITS (6 << 8)
+#define ISIF_SYN_MODE_11BITS (5 << 8)
+#define ISIF_SYN_MODE_12BITS (4 << 8)
+#define ISIF_SYN_MODE_13BITS (3 << 8)
+#define ISIF_SYN_MODE_14BITS (2 << 8)
+#define ISIF_SYN_MODE_15BITS (1 << 8)
+#define ISIF_SYN_MODE_16BITS (0 << 8)
+#define ISIF_SYN_FLDMODE_MASK 1
+#define ISIF_SYN_FLDMODE_SHIFT 7
+#define ISIF_REC656IF_BT656_EN 3
+#define ISIF_SYN_MODE_VD_POL_NEGATIVE (1 << 2)
+#define ISIF_CCDCFG_Y8POS_SHIFT 11
+#define ISIF_CCDCFG_BW656_10BIT (1 << 5)
+#define ISIF_SDOFST_FIELD_INTERLEAVED 0x249
+#define ISIF_NO_CULLING 0xffff00ff
+#define ISIF_VPFE_VDINT0 (1 << 0)
+#define ISIF_VPFE_VDINT1 (1 << 1)
+#define ISIF_VPFE_VDINT2 (1 << 2)
+#define ISIF_DMA_CNTL_OVERFLOW (1 << 31)
+
+#define ISIF_VPFE_CONFIG_PCLK_INV_SHIFT 0
+#define ISIF_VPFE_CONFIG_PCLK_INV_MASK 1
+#define ISIF_VPFE_CONFIG_PCLK_INV_NOT_INV 0
+#define ISIF_VPFE_CONFIG_PCLK_INV_INV 1
+#define ISIF_VPFE_CONFIG_VPFE_EN_SHIFT 1
+#define ISIF_VPFE_CONFIG_VPFE_EN_MASK 2
+#define ISIF_VPFE_CONFIG_VPFE_EN_DISABLE 0
+#define ISIF_VPFE_CONFIG_VPFE_EN_ENABLE 1
+#define ISIF_VPFE_CONFIG_VPFE_ST_SHIFT 2
+#define ISIF_VPFE_CONFIG_VPFE_ST_MASK 4
+#define ISIF_VPFE_CONFIG_VPFE_ST_OCP_ACTIVE 0
+#define ISIF_VPFE_CONFIG_VPFE_ST_OCP_STANDBY 1
+
+
+#endif
diff --git a/drivers/media/platform/ti-vpfe/vpfe_capture.c b/drivers/media/platform/ti-vpfe/vpfe_capture.c
new file mode 100644
index 0000000..fa54756
--- /dev/null
+++ b/drivers/media/platform/ti-vpfe/vpfe_capture.c
@@ -0,0 +1,2478 @@
+/*
+ * TI VPFE Multi instance Capture Driver
+ *
+ * Copyright (C) 2013 - 2014 Texas Instruments, Inc.
+ *
+ * Benoit Parrot <bparrot@xxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Detail description:
+ * VPFE Capture driver allows applications to capture and stream video
+ * frames on TI AM43xx SoCs from a YUV or Raw Bayer source such as
+ * decoder or image sensor device.
+ *
+ * This SoC has a dual Video Processing Front End (VPFE) instances for
+ * capturing video/raw image data into memory buffers. The data can then
+ * be stored or passed on to a compatible display device.
+ * A typical EVM using these SoCs have following high level configuration.
+ *
+ *
+ * decoder(OV2659/ YUV/
+ * TVP514x) --> Raw Bayer RGB ---> VPFE (CCDC/ISIF)
+ * data input | |
+ * V |
+ * SDRAM |
+ * V
+ * Image Processor
+ * |
+ * V
+ * SDRAM
+ *
+ * The data flow happens from a sensor/decoder connected to the VPFE over a
+ * YUV embedded (BT.656/BT.1120) or separate sync or raw bayer rgb interface
+ * and to the input of VPFE. The input data is first passed through
+ * ISIF (Image Sensor Interface). The ISIF does very little or no
+ * processing on YUV data and does lightly pre-process Raw Bayer RGB
+ * data through data gain/offset etc. After this, data is written to SDRAM.
+ *
+ * Features supported
+ * - MMAP IO
+ * - Capture using OV2659 in raw mode
+ * - Support for interfacing decoders/sensor using sub-device model
+ * - Support for asynchronous sub-device registration
+ * - Support media controller API
+ * - Support videobuf2 buffer API
+ * - Work with AM437x ISIF to do Raw Bayer RGB/YUV data capture
+ * to SDRAM.
+ * TODO list
+ * - Support for control ioctls
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-of.h>
+#include <linux/io.h>
+#include "vpfe_capture.h"
+#include <media/tvp514x.h>
+
+#include "am437x_isif_regs.h"
+
+static int debug;
+static u32 numbuffers = 3;
+static u32 bufsize = (800 * 600 * 2);
+
+module_param(numbuffers, uint, S_IRUGO);
+module_param(bufsize, uint, S_IRUGO);
+module_param(debug, int, 0644);
+
+MODULE_PARM_DESC(numbuffers, "buffer count (default:3)");
+MODULE_PARM_DESC(bufsize, "buffer size in bytes (default:720 x 576 x 2)");
+MODULE_PARM_DESC(debug, "Debug level 0-1");
+
+MODULE_DESCRIPTION("VPFE Video for Linux Capture Driver");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Texas Instruments");
+
+#define MAX_WIDTH 4096
+#define MAX_HEIGHT 4096
+
+/* standard information */
+struct vpfe_standard {
+ v4l2_std_id std_id;
+ unsigned int width;
+ unsigned int height;
+ struct v4l2_fract pixelaspect;
+ /* 0 - progressive, 1 - interlaced */
+ int frame_format;
+};
+
+/* MULTI: Global default OK for multi-instance use */
+/* data structures */
+static struct vpfe_config_params config_params = {
+ .min_numbuffers = 3,
+ .numbuffers = 3,
+ .min_bufsize = 800 * 600 * 2,
+ .device_bufsize = 800 * 600 * 2,
+};
+
+static const struct vpfe_standard vpfe_standards[] = {
+ {V4L2_STD_525_60, 800, 600, {1, 1}, 0},
+ {V4L2_STD_625_50, 720, 576, {54, 59}, 1},
+};
+
+/* map mbus_fmt to pixelformat */
+static void mbus_to_pix(struct vpfe_device *vpfe,
+ const struct v4l2_mbus_framefmt *mbus,
+ struct v4l2_pix_format *pix, unsigned int *bpp)
+{
+ unsigned int bus_width =
+ vpfe->current_subdev->isif_if_params.bus_width;
+
+ switch (mbus->code) {
+ case V4L2_MBUS_FMT_UYVY8_2X8:
+ pix->pixelformat = V4L2_PIX_FMT_UYVY;
+ *bpp = (bus_width == 10) ? 4 : 2;
+ break;
+
+ case V4L2_MBUS_FMT_YUYV8_2X8:
+ pix->pixelformat = V4L2_PIX_FMT_YUYV;
+ *bpp = (bus_width == 10) ? 4 : 2;
+ break;
+
+ case V4L2_MBUS_FMT_YVYU8_2X8:
+ pix->pixelformat = V4L2_PIX_FMT_YVYU;
+ *bpp = (bus_width == 10) ? 4 : 2;
+ break;
+
+ case V4L2_MBUS_FMT_VYUY8_2X8:
+ pix->pixelformat = V4L2_PIX_FMT_VYUY;
+ *bpp = (bus_width == 10) ? 4 : 2;
+ break;
+
+ case V4L2_MBUS_FMT_YDYUYDYV8_1X16:
+ pix->pixelformat = V4L2_PIX_FMT_NV12;
+ *bpp = (bus_width == 10) ? 2 : 1;
+ break;
+
+ case V4L2_MBUS_FMT_Y12_1X12:
+ pix->pixelformat = V4L2_PIX_FMT_YUV420;
+ *bpp = (bus_width == 10) ? 2 : 1;
+ break;
+
+ case V4L2_MBUS_FMT_YUYV8_1_5X8:
+ pix->pixelformat = V4L2_PIX_FMT_YUV420;
+ *bpp = (bus_width == 10) ? 2 : 1;
+ break;
+
+ case V4L2_MBUS_FMT_SBGGR8_1X8:
+ pix->pixelformat = V4L2_PIX_FMT_SBGGR8;
+ *bpp = (bus_width == 10) ? 2 : 1;
+ break;
+
+ case V4L2_MBUS_FMT_SGBRG8_1X8:
+ pix->pixelformat = V4L2_PIX_FMT_SGBRG8;
+ *bpp = (bus_width == 10) ? 2 : 1;
+ break;
+
+ case V4L2_MBUS_FMT_SGRBG8_1X8:
+ pix->pixelformat = V4L2_PIX_FMT_SGRBG8;
+ *bpp = (bus_width == 10) ? 2 : 1;
+ break;
+
+ case V4L2_MBUS_FMT_SRGGB8_1X8:
+ pix->pixelformat = V4L2_PIX_FMT_SRGGB8;
+ *bpp = (bus_width == 10) ? 2 : 1;
+ break;
+
+ case V4L2_MBUS_FMT_BGR565_2X8_BE:
+ pix->pixelformat = V4L2_PIX_FMT_RGB565;
+ *bpp = (bus_width == 10) ? 4 : 2;
+ break;
+
+ case V4L2_MBUS_FMT_RGB565_2X8_BE:
+ pix->pixelformat = V4L2_PIX_FMT_RGB565X;
+ *bpp = (bus_width == 10) ? 4 : 2;
+ break;
+
+ default:
+ pr_err("Invalid mbus code set\n");
+ *bpp = 1;
+ }
+
+ pix->bytesperline = pix->width * *bpp;
+ /* pitch should be 32 bytes aligned */
+ pix->bytesperline = ALIGN(pix->bytesperline, 32);
+ if (pix->pixelformat == V4L2_PIX_FMT_NV12)
+ pix->sizeimage = pix->bytesperline * pix->height +
+ ((pix->bytesperline * pix->height) >> 1);
+ else if (pix->pixelformat == V4L2_PIX_FMT_YUV420)
+ pix->sizeimage = pix->bytesperline * pix->height +
+ ((pix->bytesperline * pix->height) >> 1);
+ else
+ pix->sizeimage = pix->bytesperline * pix->height;
+}
+
+/* map mbus_fmt to pixelformat */
+static int pix_to_mbus(struct vpfe_device *vpfe,
+ struct v4l2_pix_format *pix,
+ struct v4l2_mbus_framefmt *mbus)
+{
+ memset(mbus, 0, sizeof(*mbus));
+ mbus->width = pix->width;
+ mbus->height = pix->height;
+
+ switch (pix->pixelformat) {
+ case V4L2_PIX_FMT_UYVY:
+ mbus->code = V4L2_MBUS_FMT_UYVY8_2X8;
+ break;
+ case V4L2_PIX_FMT_YUYV:
+ mbus->code = V4L2_MBUS_FMT_YUYV8_2X8;
+ break;
+ case V4L2_PIX_FMT_YVYU:
+ mbus->code = V4L2_MBUS_FMT_YVYU8_2X8;
+ break;
+ case V4L2_PIX_FMT_VYUY:
+ mbus->code = V4L2_MBUS_FMT_VYUY8_2X8;
+ break;
+ case V4L2_PIX_FMT_NV12:
+ mbus->code = V4L2_MBUS_FMT_YDYUYDYV8_1X16;
+ break;
+ case V4L2_PIX_FMT_YUV420:
+ mbus->code = V4L2_MBUS_FMT_Y12_1X12;
+ break;
+ case V4L2_PIX_FMT_SBGGR8:
+ mbus->code = V4L2_MBUS_FMT_SBGGR8_1X8;
+ break;
+ case V4L2_PIX_FMT_SGBRG8:
+ mbus->code = V4L2_MBUS_FMT_SGBRG8_1X8;
+ break;
+ case V4L2_PIX_FMT_SGRBG8:
+ mbus->code = V4L2_MBUS_FMT_SGRBG8_1X8;
+ break;
+ case V4L2_PIX_FMT_SRGGB8:
+ mbus->code = V4L2_MBUS_FMT_SRGGB8_1X8;
+ break;
+ case V4L2_PIX_FMT_RGB565:
+ mbus->code = V4L2_MBUS_FMT_BGR565_2X8_BE;
+ break;
+ case V4L2_PIX_FMT_RGB565X:
+ mbus->code = V4L2_MBUS_FMT_RGB565_2X8_BE;
+ break;
+ default:
+ pr_err("Invalid pixel code\n");
+ return -EINVAL;
+ }
+
+ mbus->colorspace = pix->colorspace;
+ mbus->field = pix->field;
+
+ return 0;
+}
+
+static int cmp_v4l2_format(const struct v4l2_format *lhs,
+ const struct v4l2_format *rhs)
+{
+ return lhs->type == rhs->type &&
+ lhs->fmt.pix.width == rhs->fmt.pix.width &&
+ lhs->fmt.pix.height == rhs->fmt.pix.height &&
+ lhs->fmt.pix.pixelformat == rhs->fmt.pix.pixelformat &&
+ lhs->fmt.pix.field == rhs->fmt.pix.field &&
+ lhs->fmt.pix.colorspace == rhs->fmt.pix.colorspace;
+}
+
+/*
+ * vpfe_get_isif_image_format - Get image parameters based on ISIF settings
+ */
+static int vpfe_get_isif_image_format(struct vpfe_device *vpfe,
+ struct v4l2_format *f)
+{
+ struct v4l2_rect image_win;
+ enum isif_buftype buf_type;
+ enum isif_frmfmt frm_fmt;
+
+ memset(f, 0, sizeof(*f));
+ f->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+ vpfe->vpfe_isif.hw_ops.get_image_window(
+ &vpfe->vpfe_isif, &image_win);
+ f->fmt.pix.width = image_win.width;
+ f->fmt.pix.height = image_win.height;
+ f->fmt.pix.bytesperline =
+ vpfe->vpfe_isif.hw_ops.get_line_length(
+ &vpfe->vpfe_isif);
+ f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
+ f->fmt.pix.height;
+ buf_type = vpfe->vpfe_isif.hw_ops.get_buftype(
+ &vpfe->vpfe_isif);
+ f->fmt.pix.pixelformat =
+ vpfe->vpfe_isif.hw_ops.get_pixel_format(
+ &vpfe->vpfe_isif);
+ frm_fmt =
+ vpfe->vpfe_isif.hw_ops.get_frame_format(
+ &vpfe->vpfe_isif);
+ if (frm_fmt == ISIF_FRMFMT_PROGRESSIVE) {
+ f->fmt.pix.field = V4L2_FIELD_NONE;
+ } else if (frm_fmt == ISIF_FRMFMT_INTERLACED) {
+ if (buf_type == ISIF_BUFTYPE_FLD_INTERLEAVED) {
+ f->fmt.pix.field = V4L2_FIELD_INTERLACED;
+ } else if (buf_type == ISIF_BUFTYPE_FLD_SEPARATED) {
+ f->fmt.pix.field = V4L2_FIELD_SEQ_TB;
+ } else {
+ dev_err(vpfe->dev, "Invalid buf_type\n");
+ return -EINVAL;
+ }
+ } else {
+ dev_err(vpfe->dev, "Invalid frm_fmt\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/*
+ * vpfe_config_isif_image_format()
+ * For a pix format, configure isif to setup the capture
+ */
+static int vpfe_config_isif_image_format(struct vpfe_device *vpfe)
+{
+ enum isif_frmfmt frm_fmt = ISIF_FRMFMT_INTERLACED;
+ int ret = 0;
+
+ if (vpfe->vpfe_isif.hw_ops.set_pixel_format(
+ &vpfe->vpfe_isif,
+ vpfe->fmt.fmt.pix.pixelformat) < 0) {
+ dev_err(vpfe->dev,
+ "couldn't set pix format in isif\n");
+ return -EINVAL;
+ }
+ /* configure the image window */
+ vpfe->vpfe_isif.hw_ops.set_image_window(
+ &vpfe->vpfe_isif,
+ &vpfe->crop, vpfe->bpp);
+
+ switch (vpfe->fmt.fmt.pix.field) {
+ case V4L2_FIELD_INTERLACED:
+ /* do nothing, since it is default */
+ ret = vpfe->vpfe_isif.hw_ops.set_buftype(
+ &vpfe->vpfe_isif,
+ ISIF_BUFTYPE_FLD_INTERLEAVED);
+ break;
+ case V4L2_FIELD_NONE:
+ frm_fmt = ISIF_FRMFMT_PROGRESSIVE;
+ /* buffer type only applicable for interlaced scan */
+ break;
+ case V4L2_FIELD_SEQ_TB:
+ ret = vpfe->vpfe_isif.hw_ops.set_buftype(
+ &vpfe->vpfe_isif,
+ ISIF_BUFTYPE_FLD_SEPARATED);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* set the frame format */
+ if (!ret)
+ ret = vpfe->vpfe_isif.hw_ops.set_frame_format(
+ &vpfe->vpfe_isif, frm_fmt);
+
+ return ret;
+}
+/*
+ * vpfe_config_image_format()
+ * For a given standard, this functions sets up the default
+ * pix format & crop values in the vpfe device and isif. It first
+ * starts with defaults based values from the standard table.
+ * It then checks if sub device support g_mbus_fmt and then override the
+ * values based on that.Sets crop values to match with scan resolution
+ * starting at 0,0. It calls vpfe_config_isif_image_format() set the
+ * values in isif
+ */
+static int vpfe_config_image_format(struct vpfe_device *vpfe,
+ v4l2_std_id std_id)
+{
+ struct vpfe_subdev_info *sdinfo = vpfe->current_subdev;
+ struct v4l2_mbus_framefmt mbus_fmt;
+ struct v4l2_pix_format *pix = &vpfe->fmt.fmt.pix;
+ struct v4l2_pix_format pix_test;
+ struct v4l2_subdev_format sd_fmt;
+ int i, ret = 0;
+
+ for (i = 0; i < ARRAY_SIZE(vpfe_standards); i++) {
+ if (vpfe_standards[i].std_id & std_id) {
+ vpfe->std_info.active_pixels =
+ vpfe_standards[i].width;
+ vpfe->std_info.active_lines =
+ vpfe_standards[i].height;
+ vpfe->std_info.frame_format =
+ vpfe_standards[i].frame_format;
+ vpfe->std_index = i;
+ break;
+ }
+ }
+
+ if (i == ARRAY_SIZE(vpfe_standards)) {
+ dev_err(vpfe->dev, "standard not supported\n");
+ return -EINVAL;
+ }
+
+ vpfe->crop.top = 0;
+ vpfe->crop.left = 0;
+ vpfe->crop.width = vpfe->std_info.active_pixels;
+ vpfe->crop.height = vpfe->std_info.active_lines;
+ pix->width = vpfe->crop.width;
+ pix->height = vpfe->crop.height;
+
+ /* first field and frame format based on standard frame format */
+ if (vpfe->std_info.frame_format) {
+ pix->field = V4L2_FIELD_INTERLACED;
+ /* assume V4L2_PIX_FMT_UYVY as default */
+ pix->pixelformat = V4L2_PIX_FMT_YUYV;
+ v4l2_fill_mbus_format(&mbus_fmt, pix,
+ V4L2_MBUS_FMT_YUYV10_2X10);
+ } else {
+ pix->field = V4L2_FIELD_NONE;
+ /* assume V4L2_PIX_FMT_SBGGR8 */
+ pix->pixelformat = V4L2_PIX_FMT_YUYV;
+ v4l2_fill_mbus_format(&mbus_fmt, pix,
+ V4L2_MBUS_FMT_YUYV10_2X10);
+ }
+
+ /* copy pix format for testing */
+ pix_test = *pix;
+
+ if (!v4l2_device_has_op(&vpfe->v4l2_dev, video, g_mbus_fmt)) {
+ sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+
+ ret = v4l2_device_call_until_err(&vpfe->v4l2_dev,
+ sdinfo->grp_id, pad, get_fmt, NULL, &sd_fmt);
+
+ if (ret && ret != -ENOIOCTLCMD) {
+ dev_err(vpfe->dev,
+ "error in getting g_mbus_fmt from sub device\n");
+ return ret;
+ }
+ } else {
+ /* if sub device supports g_mbus_fmt, override the defaults */
+ ret = v4l2_device_call_until_err(&vpfe->v4l2_dev,
+ sdinfo->grp_id, video, g_mbus_fmt, &mbus_fmt);
+
+ if (ret && ret != -ENOIOCTLCMD) {
+ dev_err(vpfe->dev,
+ "error in getting g_mbus_fmt from sub device\n");
+ return ret;
+ } else if (ret == -ENOIOCTLCMD) {
+ dev_dbg(vpfe->dev,
+ "sub device '%s' does not support g_mbus_fmt\n",
+ sdinfo->name);
+ } else {
+ dev_dbg(vpfe->dev,
+ "v4l2_subdev_call g_mbus_fmt: %d\n", ret);
+ }
+ }
+
+ /* convert mbus_format to v4l2_format */
+ v4l2_fill_pix_format(pix, &sd_fmt.format);
+ mbus_to_pix(vpfe, &sd_fmt.format, pix, &vpfe->bpp);
+
+ /* Update the crop window based on found values */
+ vpfe->crop.width = pix->width;
+ vpfe->crop.height = pix->height;
+
+ /* Sets the values in ISIF */
+ ret = vpfe_config_isif_image_format(vpfe);
+
+ return ret;
+}
+
+static int vpfe_initialize_device(struct vpfe_device *vpfe)
+{
+ int ret = 0;
+
+ /* set first input of current subdevice as the current input */
+ vpfe->current_input = 0;
+
+ /* set default standard */
+ vpfe->std_index = 0;
+
+ /* Configure the default format information */
+ ret = vpfe_config_image_format(vpfe,
+ vpfe_standards[vpfe->std_index].std_id);
+ if (ret)
+ return ret;
+
+ /* now open the isif device to initialize it */
+ ret = vpfe->vpfe_isif.hw_ops.open(
+ &vpfe->vpfe_isif,
+ vpfe->dev);
+ if (!ret)
+ vpfe->initialized = 1;
+
+ /* Clear all VPFE/ISIF interrupts */
+ if (vpfe->vpfe_isif.hw_ops.clear_intr)
+ vpfe->vpfe_isif.hw_ops.clear_intr(
+ &vpfe->vpfe_isif, -1);
+
+ return ret;
+}
+
+/*
+ * vpfe_open : It creates object of file handle structure and
+ * stores it in private_data member of filepointer
+ */
+static int vpfe_open(struct file *file)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+ struct vpfe_fh *fh;
+
+ if (!vpfe->cfg->num_subdevs) {
+ dev_err(vpfe->dev, "No decoder/sensor registered\n");
+ return -ENODEV;
+ }
+
+ /* Allocate memory for the file handle object */
+ fh = kmalloc(sizeof(*fh), GFP_KERNEL);
+ if (NULL == fh)
+ return -ENOMEM;
+
+ /* store pointer to fh in private_data member of file */
+ file->private_data = fh;
+ fh->vpfe = vpfe;
+ mutex_lock(&vpfe->lock);
+ /* If decoder is not initialized. initialize it */
+ if (!vpfe->initialized) {
+ if (vpfe_initialize_device(vpfe)) {
+ mutex_unlock(&vpfe->lock);
+ return -ENODEV;
+ }
+ }
+ /* Increment device usrs counter */
+ vpfe->usrs++;
+ /* Set io_allowed member to false */
+ fh->io_allowed = 0;
+ /* Initialize priority of this instance to default priority */
+ fh->prio = V4L2_PRIORITY_UNSET;
+ v4l2_prio_open(&vpfe->prio, &fh->prio);
+ mutex_unlock(&vpfe->lock);
+
+ return 0;
+}
+
+/**
+ * vpfe_schedule_next_buffer: set next buffer address for capture
+ * @vpfe : ptr to device
+ *
+ * This function will get next buffer from the dma queue and
+ * set the buffer address in the vpfe register for capture.
+ * the buffer is marked active
+ *
+ * Assumes caller is holding vpfe->dma_queue_lock already
+ */
+static void vpfe_schedule_next_buffer(struct vpfe_device *vpfe)
+{
+ unsigned long addr;
+
+ vpfe->next_frm = list_entry(vpfe->dma_queue.next,
+ struct vpfe_cap_buffer, list);
+ list_del(&vpfe->next_frm->list);
+
+ vpfe->next_frm->vb.state = VB2_BUF_STATE_ACTIVE;
+ addr = vb2_dma_contig_plane_dma_addr(&vpfe->next_frm->vb, 0);
+
+ vpfe->vpfe_isif.hw_ops.setfbaddr(&vpfe->vpfe_isif, addr);
+}
+
+static void vpfe_schedule_bottom_field(struct vpfe_device *vpfe)
+{
+ unsigned long addr;
+
+ addr = vb2_dma_contig_plane_dma_addr(&vpfe->next_frm->vb, 0);
+ addr += vpfe->field_off;
+ vpfe->vpfe_isif.hw_ops.setfbaddr(&vpfe->vpfe_isif, addr);
+}
+
+/*
+ * vpfe_process_buffer_complete: process a completed buffer
+ * @vpfe : ptr to device
+ *
+ * This function time stamp the buffer and mark it as DONE. It also
+ * wake up any process waiting on the QUEUE and set the next buffer
+ * as current
+ */
+static void vpfe_process_buffer_complete(struct vpfe_device *vpfe)
+{
+ v4l2_get_timestamp(&vpfe->cur_frm->vb.v4l2_buf.timestamp);
+
+ vb2_buffer_done(&vpfe->cur_frm->vb, VB2_BUF_STATE_DONE);
+ vpfe->cur_frm = vpfe->next_frm;
+}
+
+/*
+ * vpfe_isr : ISR handler for vpfe capture (VINT0)
+ * @irq: irq number
+ * @dev_id: dev_id ptr
+ *
+ * It changes status of the captured buffer, takes next buffer from the queue
+ * and sets its address in VPFE registers
+ */
+static irqreturn_t vpfe_isr(int irq, void *dev_id)
+{
+ struct vpfe_device *vpfe = dev_id;
+ int vpfe_intr_status;
+ enum v4l2_field field;
+ int fid;
+
+ /* Which interrupt did we get */
+ vpfe_intr_status = vpfe->vpfe_isif.hw_ops.intr_status(
+ &vpfe->vpfe_isif);
+
+ /* if streaming not started, don't do anything */
+ if (!vpfe->started)
+ goto clear_intr;
+
+ if (vpfe_intr_status & ISIF_VPFE_VDINT0) {
+ field = vpfe->fmt.fmt.pix.field;
+
+ /* only for 6446 this will be applicable */
+ if (vpfe->vpfe_isif.hw_ops.reset)
+ vpfe->vpfe_isif.hw_ops.reset(
+ &vpfe->vpfe_isif);
+
+ if (field == V4L2_FIELD_NONE) {
+ /* handle progressive frame capture */
+ if (vpfe->cur_frm != vpfe->next_frm)
+ vpfe_process_buffer_complete(vpfe);
+ goto next_intr;
+ }
+
+ /* interlaced or TB capture check which field
+ we are in hardware */
+ fid = vpfe->vpfe_isif.hw_ops.getfid(
+ &vpfe->vpfe_isif);
+
+ /* switch the software maintained field id */
+ vpfe->field_id ^= 1;
+ if (fid == vpfe->field_id) {
+ /* we are in-sync here,continue */
+ if (fid == 0) {
+ /*
+ * One frame is just being captured. If the
+ * next frame is available, release the
+ * current frame and move on
+ */
+ if (vpfe->cur_frm != vpfe->next_frm)
+ vpfe_process_buffer_complete(vpfe);
+ /*
+ * based on whether the two fields are stored
+ * interleavely or separately in memory,
+ * reconfigure the ISIF memory address
+ */
+ if (field == V4L2_FIELD_SEQ_TB)
+ vpfe_schedule_bottom_field(vpfe);
+
+ goto next_intr;
+ }
+ /*
+ * if one field is just being captured configure
+ * the next frame get the next frame from the empty
+ * queue if no frame is available hold on to the
+ * current buffer
+ */
+ spin_lock(&vpfe->dma_queue_lock);
+ if (!list_empty(&vpfe->dma_queue) &&
+ vpfe->cur_frm == vpfe->next_frm)
+ vpfe_schedule_next_buffer(vpfe);
+ spin_unlock(&vpfe->dma_queue_lock);
+ } else if (fid == 0) {
+ /*
+ * out of sync. Recover from any hardware out-of-sync.
+ * May loose one frame
+ */
+ vpfe->field_id = fid;
+ }
+ }
+
+next_intr:
+ if (vpfe_intr_status & ISIF_VPFE_VDINT1) {
+ spin_lock(&vpfe->dma_queue_lock);
+ if ((vpfe->fmt.fmt.pix.field == V4L2_FIELD_NONE) &&
+ !list_empty(&vpfe->dma_queue) &&
+ vpfe->cur_frm == vpfe->next_frm)
+ vpfe_schedule_next_buffer(vpfe);
+ spin_unlock(&vpfe->dma_queue_lock);
+ }
+
+clear_intr:
+ if (vpfe->vpfe_isif.hw_ops.clear_intr)
+ vpfe->vpfe_isif.hw_ops.clear_intr(
+ &vpfe->vpfe_isif, vpfe_intr_status);
+
+ return IRQ_HANDLED;
+}
+
+static void vpfe_detach_irq(struct vpfe_device *vpfe)
+{
+ enum isif_frmfmt frame_format;
+ unsigned int intr = ISIF_VPFE_VDINT0;
+
+ frame_format = vpfe->vpfe_isif.hw_ops.get_frame_format(
+ &vpfe->vpfe_isif);
+ if (frame_format == ISIF_FRMFMT_PROGRESSIVE)
+ intr |= ISIF_VPFE_VDINT1;
+
+ vpfe->vpfe_isif.hw_ops.intr_disable(
+ &vpfe->vpfe_isif, intr);
+}
+
+static int vpfe_attach_irq(struct vpfe_device *vpfe)
+{
+ enum isif_frmfmt frame_format;
+ unsigned int intr = ISIF_VPFE_VDINT0;
+
+ frame_format = vpfe->vpfe_isif.hw_ops.get_frame_format(
+ &vpfe->vpfe_isif);
+ if (frame_format == ISIF_FRMFMT_PROGRESSIVE)
+ intr |= ISIF_VPFE_VDINT1;
+
+ vpfe->vpfe_isif.hw_ops.intr_enable(
+ &vpfe->vpfe_isif, intr);
+ return 0;
+}
+
+/* vpfe_stop_isif_capture: stop streaming in ccdc/isif */
+static void vpfe_stop_isif_capture(struct vpfe_device *vpfe)
+{
+ vpfe->started = 0;
+ vpfe->vpfe_isif.hw_ops.enable(&vpfe->vpfe_isif, 0);
+ if (vpfe->vpfe_isif.hw_ops.enable_out_to_sdram)
+ vpfe->vpfe_isif.hw_ops.enable_out_to_sdram(
+ &vpfe->vpfe_isif, 0);
+}
+
+ /*
+ * vpfe_release : function to clean up file close
+ * @filep: file pointer
+ *
+ * This function deletes buffer queue, frees the
+ * buffers and the vpfe file handle
+ */
+static int vpfe_release(struct file *file)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+ struct vpfe_fh *fh = file->private_data;
+ struct vpfe_subdev_info *sdinfo;
+ int ret;
+
+ /* Get the device lock */
+ mutex_lock(&vpfe->lock);
+ /* if this instance is doing IO */
+ if (fh->io_allowed) {
+ if (vpfe->started) {
+ sdinfo = vpfe->current_subdev;
+ ret = v4l2_device_call_until_err(&vpfe->v4l2_dev,
+ sdinfo->grp_id,
+ video, s_stream, 0);
+ if (ret && (ret != -ENOIOCTLCMD))
+ dev_err(vpfe->dev,
+ "stream off failed in subdev\n");
+ vpfe_stop_isif_capture(vpfe);
+ vpfe_detach_irq(vpfe);
+ vb2_queue_release(&vpfe->buffer_queue);
+ vb2_dma_contig_cleanup_ctx(vpfe->alloc_ctx);
+ }
+ vpfe->io_usrs = 0;
+ vpfe->numbuffers = config_params.numbuffers;
+ }
+
+ /* Decrement device usrs counter */
+ vpfe->usrs--;
+ /* Close the priority */
+ v4l2_prio_close(&vpfe->prio, fh->prio);
+ /* If this is the last file handle */
+ if (!vpfe->usrs) {
+ vpfe->initialized = 0;
+ if (vpfe->vpfe_isif.hw_ops.close)
+ vpfe->vpfe_isif.hw_ops.close(
+ &vpfe->vpfe_isif, vpfe->dev);
+ }
+ mutex_unlock(&vpfe->lock);
+ file->private_data = NULL;
+
+ /* Free memory allocated to file handle object */
+ kfree(fh);
+
+ return 0;
+}
+
+/*
+ * vpfe_mmap : It is used to map kernel space buffers into user spaces
+ * @file: file pointer
+ * @vma: ptr to vm_area_struct
+ */
+static int vpfe_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ /* Get the device object and file handle object */
+ struct vpfe_device *vpfe = video_drvdata(file);
+ int ret;
+
+ if (mutex_lock_interruptible(&vpfe->lock))
+ return -ERESTARTSYS;
+
+ ret = vb2_mmap(&vpfe->buffer_queue, vma);
+ mutex_unlock(&vpfe->lock);
+
+ return ret;
+}
+
+/*
+ * vpfe_poll: It is used for select/poll system call
+ * @filep: file pointer
+ * @wait: poll table to wait
+ */
+static unsigned int vpfe_poll(struct file *file, poll_table *wait)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+ int ret = 0;
+
+ if (vpfe->started) {
+ mutex_lock(&vpfe->lock);
+ ret = vb2_poll(&vpfe->buffer_queue, file, wait);
+ mutex_unlock(&vpfe->lock);
+ }
+
+ return ret;
+}
+
+/* vpfe capture driver file operations */
+static const struct v4l2_file_operations vpfe_fops = {
+ .owner = THIS_MODULE,
+ .open = vpfe_open,
+ .release = vpfe_release,
+ .unlocked_ioctl = video_ioctl2,
+ .mmap = vpfe_mmap,
+ .poll = vpfe_poll
+};
+
+static int vpfe_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+
+ cap->version = KERNEL_VERSION(3, 17, 0);
+ cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING
+ | V4L2_CAP_READWRITE;
+ cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
+ strlcpy(cap->driver, CAPTURE_DRV_NAME, sizeof(cap->driver));
+ snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
+ "VPFE");
+ strlcpy(cap->card, vpfe->cfg->card_name, sizeof(cap->card));
+
+ return 0;
+}
+
+/* get the subdev which is connected to the output video node */
+static struct v4l2_subdev *
+vpfe_remote_subdev(struct vpfe_device *vpfe, u32 *pad)
+{
+ struct media_pad *remote = media_entity_remote_pad(&vpfe->pad);
+
+ if (remote == NULL)
+ return NULL;
+ else if ((remote->entity->type & MEDIA_ENT_T_V4L2_SUBDEV) == 0)
+ return NULL;
+
+ if (pad)
+ *pad = remote->index;
+
+ return media_entity_to_v4l2_subdev(remote->entity);
+}
+
+/* get the format set at output pad of the adjacent subdev */
+static int __vpfe_get_format(struct vpfe_device *vpfe,
+ struct v4l2_format *format, unsigned int *bpp)
+{
+ struct v4l2_subdev_format fmt;
+ struct v4l2_subdev *subdev;
+ struct media_pad *remote;
+ u32 pad;
+ int ret;
+
+ subdev = vpfe_remote_subdev(vpfe, &pad);
+ if (subdev == NULL)
+ return -EINVAL;
+
+ fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+ remote = media_entity_remote_pad(&vpfe->pad);
+ fmt.pad = remote->index;
+
+ ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt);
+ if (ret == -ENOIOCTLCMD)
+ return -EINVAL;
+
+ format->type = vpfe->fmt.type;
+
+ /* convert mbus_format to v4l2_format */
+ v4l2_fill_pix_format(&format->fmt.pix, &fmt.format);
+ mbus_to_pix(vpfe, &fmt.format, &format->fmt.pix, bpp);
+
+ return 0;
+}
+
+/* set the format at output pad of the adjacent subdev */
+static int __vpfe_set_format(struct vpfe_device *vpfe,
+ struct v4l2_format *format, unsigned int *bpp)
+{
+ struct v4l2_subdev_format fmt;
+ struct v4l2_subdev *subdev;
+ struct media_pad *remote;
+ u32 pad;
+ int ret;
+
+ subdev = vpfe_remote_subdev(vpfe, &pad);
+ if (subdev == NULL)
+ return -EINVAL;
+
+ fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+ remote = media_entity_remote_pad(&vpfe->pad);
+ fmt.pad = remote->index;
+
+ ret = pix_to_mbus(vpfe, &format->fmt.pix, &fmt.format);
+ if (ret)
+ return ret;
+
+ ret = v4l2_subdev_call(subdev, pad, set_fmt, NULL, &fmt);
+ if (ret == -ENOIOCTLCMD)
+ return -EINVAL;
+
+ format->type = vpfe->fmt.type;
+
+ /* convert mbus_format to v4l2_format */
+ v4l2_fill_pix_format(&format->fmt.pix, &fmt.format);
+ mbus_to_pix(vpfe, &fmt.format, &format->fmt.pix, bpp);
+
+ return 0;
+}
+
+static int vpfe_g_fmt(struct file *file, void *priv,
+ struct v4l2_format *fmt)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+ struct v4l2_format format;
+ unsigned int bpp;
+ int ret = 0;
+
+ ret = __vpfe_get_format(vpfe, &format, &bpp);
+ if (ret)
+ return ret;
+
+ /* Fill in the information about format */
+ *fmt = vpfe->fmt;
+ return ret;
+}
+
+static int vpfe_enum_fmt(struct file *file, void *priv,
+ struct v4l2_fmtdesc *fmt)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+ struct v4l2_mbus_framefmt mbus;
+ struct v4l2_subdev_mbus_code_enum mbus_code;
+ struct v4l2_subdev *subdev;
+ struct media_pad *remote;
+ struct v4l2_pix_format pix;
+ u32 pad, bpp;
+ int ret;
+
+ subdev = vpfe_remote_subdev(vpfe, &pad);
+ if (subdev == NULL)
+ return -EINVAL;
+
+ remote = media_entity_remote_pad(&vpfe->pad);
+ mbus_code.index = fmt->index;
+ ret = v4l2_subdev_call(subdev, pad, enum_mbus_code, NULL, &mbus_code);
+ if (ret)
+ return -EINVAL;
+
+ mbus.code = mbus_code.code;
+ mbus_to_pix(vpfe, &mbus, &pix, &bpp);
+
+ /* Should be V4L2_BUF_TYPE_VIDEO_CAPTURE */
+ fmt->type = vpfe->fmt.type;
+ fmt->pixelformat = pix.pixelformat;
+
+ switch (fmt->pixelformat) {
+ case V4L2_PIX_FMT_UYVY:
+ case V4L2_PIX_FMT_YUYV:
+ case V4L2_PIX_FMT_VYUY:
+ snprintf(fmt->description, sizeof(fmt->description),
+ "YUV 4:2:2");
+ break;
+ case V4L2_PIX_FMT_YVYU:
+ snprintf(fmt->description, sizeof(fmt->description),
+ "YVU 4:2:2");
+ break;
+ case V4L2_PIX_FMT_NV12:
+ snprintf(fmt->description, sizeof(fmt->description),
+ "Y/CbCr 4:2:0");
+ break;
+ case V4L2_PIX_FMT_YUV420:
+ snprintf(fmt->description, sizeof(fmt->description),
+ "YUV 4:2:0");
+ break;
+ case V4L2_PIX_FMT_SBGGR8:
+ case V4L2_PIX_FMT_SGBRG8:
+ case V4L2_PIX_FMT_SGRBG8:
+ case V4L2_PIX_FMT_SRGGB8:
+ snprintf(fmt->description, sizeof(fmt->description),
+ "SRGB-8");
+ break;
+ case V4L2_PIX_FMT_RGB565:
+ snprintf(fmt->description, sizeof(fmt->description),
+ "RGB-16 (5-6-5)");
+ break;
+ case V4L2_PIX_FMT_RGB565X:
+ snprintf(fmt->description, sizeof(fmt->description),
+ "RGB-16 (5-6-5) BE");
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int vpfe_s_fmt(struct file *file, void *priv,
+ struct v4l2_format *fmt)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+ struct v4l2_format format;
+ unsigned int bpp;
+ int ret = 0;
+
+ memset(&format, 0x00, sizeof(format));
+
+ /* If streaming is started, return error */
+ if (vpfe->started) {
+ dev_err(vpfe->dev, "Streaming is started\n");
+ return -EBUSY;
+ }
+
+ /* Check for valid frame format */
+ ret = __vpfe_get_format(vpfe, &format, &bpp);
+ if (ret)
+ return ret;
+ if (!cmp_v4l2_format(fmt, &format)) {
+ /* Sensor format is different from the requested format
+ * so we need to change it
+ */
+ ret = __vpfe_set_format(vpfe, fmt, &bpp);
+ if (ret)
+ return ret;
+ } else /* Just make sure all of the fields are consistent */
+ *fmt = format;
+
+ /* store the pixel format in the device object */
+ ret = mutex_lock_interruptible(&vpfe->lock);
+ if (ret)
+ return ret;
+
+ /* First detach any IRQ if currently attached */
+ vpfe_detach_irq(vpfe);
+ vpfe->fmt = *fmt;
+ vpfe->bpp = bpp;
+
+ /* Update the crop window based on found values */
+ vpfe->crop.width = fmt->fmt.pix.width;
+ vpfe->crop.height = fmt->fmt.pix.height;
+
+ /* set image capture parameters in the isif */
+ ret = vpfe_config_isif_image_format(vpfe);
+ mutex_unlock(&vpfe->lock);
+
+ return ret;
+}
+
+static int vpfe_try_fmt(struct file *file, void *priv,
+ struct v4l2_format *fmt)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+ struct v4l2_format format;
+ unsigned int bpp;
+ int ret = 0;
+
+ memset(&format, 0x00, sizeof(format));
+
+ ret = __vpfe_get_format(vpfe, &format, &bpp);
+ if (ret)
+ return ret;
+
+ *fmt = format;
+
+ return 0;
+}
+
+static int vpfe_enum_size(struct file *file, void *priv,
+ struct v4l2_frmsizeenum *fsize)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+ struct v4l2_mbus_framefmt mbus;
+ struct v4l2_subdev_frame_size_enum fse;
+ struct v4l2_subdev *subdev;
+ struct media_pad *remote;
+ struct v4l2_pix_format pix;
+ u32 pad;
+ int ret;
+
+ memset(fsize->reserved, 0x00, sizeof(fsize->reserved));
+
+ subdev = vpfe_remote_subdev(vpfe, &pad);
+ if (subdev == NULL)
+ return -EINVAL;
+
+ /* Construct pix from parameter and use defualt for the rest */
+ pix.pixelformat = fsize->pixel_format;
+ pix.width = 640;
+ pix.height = 480;
+ pix.colorspace = V4L2_COLORSPACE_JPEG;
+ pix.field = V4L2_FIELD_NONE;
+
+ ret = pix_to_mbus(vpfe, &pix, &mbus);
+ if (ret)
+ return ret;
+
+ remote = media_entity_remote_pad(&vpfe->pad);
+ fse.index = fsize->index;
+ fse.pad = remote->index;
+ fse.code = mbus.code;
+
+ ret = v4l2_subdev_call(subdev, pad, enum_frame_size, NULL, &fse);
+ if (ret)
+ return -EINVAL;
+
+ fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
+ fsize->discrete.width = fse.max_width;
+ fsize->discrete.height = fse.max_height;
+
+ return 0;
+}
+
+/*
+ * vpfe_get_subdev_input_index - Get subdev index and subdev input index for a
+ * given app input index
+ */
+static int vpfe_get_subdev_input_index(struct vpfe_device *vpfe,
+ int *subdev_index,
+ int *subdev_input_index,
+ int app_input_index)
+{
+ struct vpfe_config *cfg = vpfe->cfg;
+ struct vpfe_subdev_info *sdinfo;
+ int i, j = 0;
+
+ for (i = 0; i < cfg->num_subdevs; i++) {
+ sdinfo = &cfg->sub_devs[i];
+ if (app_input_index < (j + sdinfo->num_inputs)) {
+ *subdev_index = i;
+ *subdev_input_index = app_input_index - j;
+ return 0;
+ }
+ j += sdinfo->num_inputs;
+ }
+
+ return -EINVAL;
+}
+
+/*
+ * vpfe_get_app_input - Get app input index for a given subdev input index
+ * driver stores the input index of the current sub device and translate it
+ * when application request the current input
+ */
+static int vpfe_get_app_input_index(struct vpfe_device *vpfe,
+ int *app_input_index)
+{
+ struct vpfe_config *cfg = vpfe->cfg;
+ struct vpfe_subdev_info *sdinfo;
+ int i, j = 0;
+
+ for (i = 0; i < cfg->num_subdevs; i++) {
+ sdinfo = &cfg->sub_devs[i];
+ if (!strcmp(sdinfo->name, vpfe->current_subdev->name)) {
+ if (vpfe->current_input >= sdinfo->num_inputs)
+ return -1;
+ *app_input_index = j + vpfe->current_input;
+ return 0;
+ }
+ j += sdinfo->num_inputs;
+ }
+
+ return -EINVAL;
+}
+
+static int vpfe_enum_input(struct file *file, void *priv,
+ struct v4l2_input *inp)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+ struct vpfe_subdev_info *sdinfo;
+ int subdev, index;
+
+ if (vpfe_get_subdev_input_index(vpfe,
+ &subdev, &index,
+ inp->index) < 0)
+ return -EINVAL;
+
+ sdinfo = &vpfe->cfg->sub_devs[subdev];
+ memcpy(inp, &sdinfo->inputs[index], sizeof(struct v4l2_input));
+
+ return 0;
+}
+
+static int vpfe_g_input(struct file *file, void *priv, unsigned int *index)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+
+ return vpfe_get_app_input_index(vpfe, index);
+}
+
+/* Assumes caller is holding vpfe->lock */
+static int vpfe_set_input(struct vpfe_device *vpfe, unsigned int index)
+{
+ struct v4l2_subdev *sd;
+ struct vpfe_subdev_info *sdinfo;
+ int subdev_index = 0, inp_index = 0;
+ struct vpfe_route *route;
+ u32 input = 0, output = 0;
+ int ret = -EINVAL;
+
+ /*
+ * If streaming is started return device busy
+ * error
+ */
+ if (vpfe->started) {
+ dev_err(vpfe->dev, "Streaming is on\n");
+ ret = -EBUSY;
+ goto get_out;
+ }
+ ret = vpfe_get_subdev_input_index(vpfe,
+ &subdev_index, &inp_index, index);
+ if (ret < 0) {
+ dev_err(vpfe->dev, "invalid input index\n");
+ goto get_out;
+ }
+
+ sdinfo = &vpfe->cfg->sub_devs[subdev_index];
+ sd = vpfe->sd[subdev_index];
+ route = &sdinfo->routes[inp_index];
+ if (route && sdinfo->can_route) {
+ input = route->input;
+ output = route->output;
+ if (sd)
+ ret = v4l2_subdev_call(sd, video,
+ s_routing, input, output, 0);
+
+ if (ret) {
+ ret = -EINVAL;
+ goto get_out;
+ }
+ }
+
+ vpfe->current_subdev = sdinfo;
+ vpfe->current_input = index;
+ vpfe->std_index = 0;
+
+ /* set the bus/interface parameter for the sub device in isif */
+ ret = vpfe->vpfe_isif.hw_ops.set_hw_if_params(
+ &vpfe->vpfe_isif, &sdinfo->isif_if_params);
+ if (ret)
+ goto get_out;
+
+ /* set the default image parameters in the device */
+ ret = vpfe_config_image_format(vpfe,
+ vpfe_standards[vpfe->std_index].std_id);
+
+get_out:
+ return ret;
+}
+
+static int vpfe_s_input(struct file *file, void *priv, unsigned int index)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+ int ret = -EINVAL;
+
+ ret = mutex_lock_interruptible(&vpfe->lock);
+ if (ret)
+ return ret;
+
+ ret = vpfe_set_input(vpfe, index);
+ mutex_unlock(&vpfe->lock);
+
+ return ret;
+}
+
+static int vpfe_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+ struct vpfe_subdev_info *sdinfo;
+ int ret = 0;
+
+ ret = mutex_lock_interruptible(&vpfe->lock);
+ sdinfo = vpfe->current_subdev;
+ if (ret)
+ return ret;
+
+ /* Call querystd function of decoder device */
+ ret = v4l2_device_call_until_err(&vpfe->v4l2_dev, sdinfo->grp_id,
+ video, querystd, std_id);
+ mutex_unlock(&vpfe->lock);
+
+ return ret;
+}
+
+static int vpfe_s_std(struct file *file, void *priv, v4l2_std_id std_id)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+ struct vpfe_subdev_info *sdinfo;
+ int ret = 0;
+
+ /* Call decoder driver function to set the standard */
+ ret = mutex_lock_interruptible(&vpfe->lock);
+ if (ret)
+ return ret;
+
+ sdinfo = vpfe->current_subdev;
+ /* If streaming is started, return device busy error */
+ if (vpfe->started) {
+ dev_err(vpfe->dev, "streaming is started\n");
+ ret = -EBUSY;
+ goto unlock_out;
+ }
+
+ ret = v4l2_device_call_until_err(&vpfe->v4l2_dev, sdinfo->grp_id,
+ video, s_std, std_id);
+ if (ret < 0) {
+ dev_err(vpfe->dev, "Failed to set standard\n");
+ goto unlock_out;
+ }
+ ret = vpfe_config_image_format(vpfe, std_id);
+
+unlock_out:
+ mutex_unlock(&vpfe->lock);
+
+ return ret;
+}
+
+static int vpfe_g_std(struct file *file, void *priv, v4l2_std_id *std_id)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+
+ *std_id = vpfe_standards[vpfe->std_index].std_id;
+
+ return 0;
+}
+/*
+ * Videobuf operations
+ */
+
+/*
+ * vpfe_buffer_queue_setup : Callback function for buffer setup.
+ * @vq: vb2_queue ptr
+ * @fmt: v4l2 format
+ * @nbuffers: ptr to number of buffers requested by application
+ * @nplanes:: contains number of distinct video planes needed to hold a frame
+ * @sizes[]: contains the size (in bytes) of each plane.
+ * @alloc_ctxs: ptr to allocation context
+ *
+ * This callback function is called when reqbuf() is called to adjust
+ * the buffer count and buffer size
+ */
+
+static int vpfe_buffer_queue_setup(struct vb2_queue *vq,
+ const struct v4l2_format *fmt,
+ unsigned int *nbuffers, unsigned int *nplanes,
+ unsigned int sizes[], void *alloc_ctxs[])
+{
+ struct vpfe_fh *fh = vb2_get_drv_priv(vq);
+ struct vpfe_device *vpfe = fh->vpfe;
+ unsigned long size;
+
+ size = vpfe->fmt.fmt.pix.sizeimage;
+
+ if (*nbuffers < config_params.min_numbuffers)
+ *nbuffers = config_params.min_numbuffers;
+
+ *nplanes = 1;
+ sizes[0] = size;
+ alloc_ctxs[0] = vpfe->alloc_ctx;
+
+ return 0;
+}
+
+/*
+ * vpfe_buffer_prepare : callback function for buffer prepare
+ * @vb: ptr to vb2_buffer
+ *
+ * This is the callback function for buffer prepare when vb2_qbuf()
+ * function is called. The buffer is prepared and user space virtual address
+ * or user address is converted into physical address
+ */
+static int vpfe_buffer_prepare(struct vb2_buffer *vb)
+{
+ struct vpfe_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
+ struct vpfe_device *vpfe = fh->vpfe;
+ unsigned long addr;
+
+ /* If buffer is not initialized, initialize it */
+ if (vb->state != VB2_BUF_STATE_ACTIVE &&
+ vb->state != VB2_BUF_STATE_PREPARED) {
+ vb2_set_plane_payload(vb, 0, vpfe->fmt.fmt.pix.sizeimage);
+ if (vb2_plane_vaddr(vb, 0) &&
+ vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
+ goto exit;
+ addr = vb2_dma_contig_plane_dma_addr(vb, 0);
+
+ /* Make sure user addresses are aligned to 32 bytes */
+ if (!ALIGN(addr, 32))
+ goto exit;
+ }
+
+ return 0;
+
+exit:
+ return -EINVAL;
+}
+
+/*
+ * vpfe_buffer_queue : Callback function to add buffer to DMA queue
+ * @vb: ptr to vb2_buffer
+ */
+static void vpfe_buffer_queue(struct vb2_buffer *vb)
+{
+ /* Get the file handle object and device object */
+ struct vpfe_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
+ struct vpfe_device *vpfe = fh->vpfe;
+ struct vpfe_cap_buffer *buf = container_of(vb,
+ struct vpfe_cap_buffer, vb);
+ unsigned long flags;
+
+ /* add the buffer to the DMA queue */
+ spin_lock_irqsave(&vpfe->dma_queue_lock, flags);
+ list_add_tail(&buf->list, &vpfe->dma_queue);
+ spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags);
+}
+
+/*
+ * vpfe_buffer_cleanup : Callback function to free buffer
+ * @vb: ptr to vb2_buffer
+ *
+ * This function is called from the videobuf2 layer to free memory
+ * allocated to the buffers
+ */
+static void vpfe_buffer_cleanup(struct vb2_buffer *vb)
+{
+ /* Get the file handle object and device object */
+ struct vpfe_fh *fh = vb2_get_drv_priv(vb->vb2_queue);
+ struct vpfe_device *vpfe = fh->vpfe;
+ struct vpfe_cap_buffer *buf = container_of(vb,
+ struct vpfe_cap_buffer, vb);
+ unsigned long flags;
+
+ /*
+ * We need to flush the buffer from the dma queue since
+ * they are de-allocated
+ */
+ spin_lock_irqsave(&vpfe->dma_queue_lock, flags);
+
+ if (vb->state == VB2_BUF_STATE_ACTIVE)
+ list_del_init(&buf->list);
+
+ spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags);
+}
+
+static void vpfe_wait_prepare(struct vb2_queue *vq)
+{
+ struct vpfe_fh *fh = vb2_get_drv_priv(vq);
+ struct vpfe_device *vpfe = fh->vpfe;
+
+ mutex_unlock(&vpfe->lock);
+}
+
+static void vpfe_wait_finish(struct vb2_queue *vq)
+{
+ struct vpfe_fh *fh = vb2_get_drv_priv(vq);
+ struct vpfe_device *vpfe = fh->vpfe;
+
+ mutex_lock(&vpfe->lock);
+}
+
+static int vpfe_buffer_init(struct vb2_buffer *vb)
+{
+ struct vpfe_cap_buffer *buf = container_of(vb,
+ struct vpfe_cap_buffer, vb);
+
+ INIT_LIST_HEAD(&buf->list);
+
+ return 0;
+}
+
+static void vpfe_calculate_offsets(struct vpfe_device *vpfe);
+static void vpfe_start_isif_capture(struct vpfe_device *vpfe);
+
+static int vpfe_start_streaming(struct vb2_queue *vq, unsigned int count)
+{
+ struct vpfe_fh *fh = vb2_get_drv_priv(vq);
+ struct vpfe_device *vpfe = fh->vpfe;
+ unsigned long addr = 0;
+ unsigned long flags;
+ int ret = 0;
+
+ /* If buffer queue is empty, return error */
+ spin_lock_irqsave(&vpfe->dma_queue_lock, flags);
+ if (list_empty(&vpfe->dma_queue)) {
+ spin_unlock_irqrestore(&vpfe->irqlock, flags);
+ return -EIO;
+ }
+
+ /* Get the next frame from the buffer queue */
+ vpfe->next_frm = list_entry(vpfe->dma_queue.next,
+ struct vpfe_cap_buffer, list);
+ vpfe->cur_frm = vpfe->next_frm;
+ /* Remove buffer from the buffer queue */
+ list_del(&vpfe->cur_frm->list);
+ spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags);
+
+ /* Mark state of the current frame to active */
+ vpfe->cur_frm->vb.state = VB2_BUF_STATE_ACTIVE;
+ /* Initialize field_id and started member */
+ vpfe->field_id = 0;
+ addr = vb2_dma_contig_plane_dma_addr(&vpfe->cur_frm->vb, 0);
+
+ /* Calculate field offset */
+ vpfe_calculate_offsets(vpfe);
+
+ if (vpfe_attach_irq(vpfe) < 0) {
+ dev_err(vpfe->dev,
+ "Error in attaching interrupt handle\n");
+ return -EFAULT;
+ }
+ if (vpfe->vpfe_isif.hw_ops.configure(&vpfe->vpfe_isif) < 0) {
+ dev_err(vpfe->dev,
+ "Error in configuring isif\n");
+ return -EINVAL;
+ }
+
+ vpfe->vpfe_isif.hw_ops.setfbaddr(
+ &vpfe->vpfe_isif, (unsigned long)(addr));
+ vpfe_start_isif_capture(vpfe);
+
+ return ret;
+}
+
+/* abort streaming and wait for last buffer */
+static void vpfe_stop_streaming(struct vb2_queue *vq)
+{
+ struct vpfe_fh *fh = vb2_get_drv_priv(vq);
+ struct vpfe_device *vpfe = fh->vpfe;
+ unsigned long flags;
+
+ if (!vb2_is_streaming(vq))
+ return;
+
+ /* release all active buffers */
+ spin_lock_irqsave(&vpfe->dma_queue_lock, flags);
+
+ if (vpfe->cur_frm)
+ vb2_buffer_done(&vpfe->cur_frm->vb, VB2_BUF_STATE_DONE);
+
+ while (!list_empty(&vpfe->dma_queue)) {
+ struct vpfe_cap_buffer *buf;
+
+ buf = list_first_entry(&vpfe->dma_queue, struct vpfe_cap_buffer,
+ list);
+ list_del(&buf->list);
+ vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
+ }
+
+ spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags);
+}
+
+static struct vb2_ops video_qops = {
+ .queue_setup = vpfe_buffer_queue_setup,
+ .wait_prepare = vpfe_wait_prepare,
+ .wait_finish = vpfe_wait_finish,
+ .buf_init = vpfe_buffer_init,
+ .buf_prepare = vpfe_buffer_prepare,
+ .start_streaming = vpfe_start_streaming,
+ .stop_streaming = vpfe_stop_streaming,
+ .buf_cleanup = vpfe_buffer_cleanup,
+ .buf_queue = vpfe_buffer_queue,
+};
+
+/*
+ * vpfe_reqbufs() - request buffer handler
+ * @file: file ptr
+ * @priv: file handle
+ * @reqbuf: request buffer structure ptr
+ *
+ * Currently support REQBUF only once opening
+ * the device.
+ */
+static int vpfe_reqbufs(struct file *file, void *priv,
+ struct v4l2_requestbuffers *req_buf)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+ struct vpfe_fh *fh = file->private_data;
+ struct vb2_queue *q;
+ int ret = 0;
+
+ if (req_buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
+ dev_err(vpfe->dev, "Invalid buffer type\n");
+ return -EINVAL;
+ }
+
+ ret = mutex_lock_interruptible(&vpfe->lock);
+ if (ret)
+ return ret;
+
+ if (vpfe->io_usrs != 0) {
+ dev_err(vpfe->dev, "Only one IO user allowed\n");
+ ret = -EBUSY;
+ goto unlock_out;
+ }
+
+ /* Initialize videobuf2 queue as per the buffer type */
+ vpfe->alloc_ctx = vb2_dma_contig_init_ctx(vpfe->dev);
+ if (IS_ERR(vpfe->alloc_ctx)) {
+ dev_err(vpfe->dev, "Failed to get the context\n");
+ ret = PTR_ERR(vpfe->alloc_ctx);
+ goto unlock_out;
+ }
+
+ q = &vpfe->buffer_queue;
+ q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ q->io_modes = VB2_MMAP | VB2_USERPTR;
+ q->drv_priv = fh;
+ q->ops = &video_qops;
+ q->mem_ops = &vb2_dma_contig_memops;
+ q->buf_struct_size = sizeof(struct vpfe_cap_buffer);
+ q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+
+ ret = vb2_queue_init(q);
+ if (ret) {
+ dev_err(vpfe->dev, "vb2_queue_init() failed\n");
+ vb2_dma_contig_cleanup_ctx(vpfe->alloc_ctx);
+ goto unlock_out;
+ }
+
+ /* Set io allowed member of file handle to TRUE */
+ fh->io_allowed = 1;
+ /* Increment io usrs member of channel object to 1 */
+ vpfe->io_usrs = 1;
+ /* Store type of memory requested in channel object */
+ vpfe->memory = req_buf->memory;
+ INIT_LIST_HEAD(&vpfe->dma_queue);
+
+ /* Allocate buffers */
+ ret = vb2_reqbufs(&vpfe->buffer_queue, req_buf);
+
+unlock_out:
+ mutex_unlock(&vpfe->lock);
+
+ return ret;
+}
+
+/*
+ * vpfe_querybuf() - query buffer handler
+ * @file: file ptr
+ * @priv: file handle
+ * @buf: v4l2 buffer structure ptr
+ */
+static int vpfe_querybuf(struct file *file, void *priv,
+ struct v4l2_buffer *buf)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+
+ if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
+ dev_dbg(vpfe->dev, "Invalid buf type\n");
+ return -EINVAL;
+ }
+
+ if (vpfe->memory != V4L2_MEMORY_MMAP) {
+ dev_dbg(vpfe->dev, "Invalid memory\n");
+ return -EINVAL;
+ }
+
+ return vb2_querybuf(&vpfe->buffer_queue, buf);
+}
+
+/*
+ * vpfe_qbuf() - queue buffer handler
+ * @file: file ptr
+ * @priv: file handle
+ * @buf: v4l2 buffer structure ptr
+ */
+static int vpfe_qbuf(struct file *file, void *priv,
+ struct v4l2_buffer *buf)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+ struct vpfe_fh *fh = file->private_data;
+
+ if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf->type) {
+ dev_err(vpfe->dev, "Invalid buf type\n");
+ return -EINVAL;
+ }
+
+ /*
+ * If this file handle is not allowed to do IO,
+ * return error
+ */
+ if (!fh->io_allowed) {
+ dev_err(vpfe->dev, "fh->io_allowed\n");
+ return -EACCES;
+ }
+
+ return vb2_qbuf(&vpfe->buffer_queue, buf);
+}
+
+/*
+ * vpfe_dqbuf() - dequeue buffer handler
+ * @file: file ptr
+ * @priv: file handle
+ * @buf: v4l2 buffer structure ptr
+ */
+static int vpfe_dqbuf(struct file *file, void *priv,
+ struct v4l2_buffer *buf)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+
+ if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf->type) {
+ dev_err(vpfe->dev, "Invalid buf type\n");
+ return -EINVAL;
+ }
+
+ return vb2_dqbuf(&vpfe->buffer_queue, buf,
+ (file->f_flags & O_NONBLOCK));
+}
+
+/*
+ * vpfe_calculate_offsets : This function calculates buffers offset
+ * for top and bottom field
+ */
+static void vpfe_calculate_offsets(struct vpfe_device *vpfe)
+{
+ struct v4l2_rect image_win;
+
+ vpfe->vpfe_isif.hw_ops.get_image_window(
+ &vpfe->vpfe_isif, &image_win);
+ vpfe->field_off = image_win.height * image_win.width;
+}
+
+/* vpfe_start_isif_capture: start streaming in ccdc/isif */
+static void vpfe_start_isif_capture(struct vpfe_device *vpfe)
+{
+ vpfe->vpfe_isif.hw_ops.enable(&vpfe->vpfe_isif, 1);
+ if (vpfe->vpfe_isif.hw_ops.enable_out_to_sdram)
+ vpfe->vpfe_isif.hw_ops.enable_out_to_sdram(
+ &vpfe->vpfe_isif, 1);
+ vpfe->started = 1;
+}
+
+/*
+ * vpfe_streamon() - streamon handler
+ * @file: file ptr
+ * @priv: file handle
+ * @buftype: v4l2 buffer type
+
+ * Assume the DMA queue is not empty.
+ * application is expected to call QBUF before calling
+ * this ioctl. If not, driver returns error
+ */
+static int vpfe_streamon(struct file *file, void *priv,
+ enum v4l2_buf_type buf_type)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+ struct vpfe_fh *fh = file->private_data;
+ struct vpfe_subdev_info *sdinfo;
+ int ret = 0;
+
+ if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf_type) {
+ dev_err(vpfe->dev, "Invalid buf type\n");
+ return -EINVAL;
+ }
+
+ /* If file handle is not allowed IO, return error */
+ if (!fh->io_allowed) {
+ dev_err(vpfe->dev, "fh->io_allowed\n");
+ return -EACCES;
+ }
+
+ /* If streaming is already started, return error */
+ if (vpfe->started) {
+ dev_err(vpfe->dev, "device started\n");
+ return -EBUSY;
+ }
+
+ sdinfo = vpfe->current_subdev;
+ ret = v4l2_device_call_until_err(&vpfe->v4l2_dev, sdinfo->grp_id,
+ video, s_stream, 1);
+
+ if (ret && (ret != -ENOIOCTLCMD)) {
+ dev_err(vpfe->dev, "stream on failed in subdev\n");
+ return -EINVAL;
+ }
+
+ ret = mutex_lock_interruptible(&vpfe->lock);
+ if (ret)
+ goto unlock_out;
+
+ /* Call vb2_streamon to start streaming * in videobuf2 */
+ ret = vb2_streamon(&vpfe->buffer_queue, buf_type);
+ if (ret)
+ goto unlock_out;
+
+unlock_out:
+ mutex_unlock(&vpfe->lock);
+
+ return ret;
+}
+
+/*
+ * vpfe_streamoff() - streamoff handler
+ * @file: file ptr
+ * @priv: file handle
+ * @buftype: v4l2 buffer type
+ */
+static int vpfe_streamoff(struct file *file, void *priv,
+ enum v4l2_buf_type buf_type)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+ struct vpfe_fh *fh = file->private_data;
+ struct vpfe_subdev_info *sdinfo;
+ int ret = 0;
+
+ if (V4L2_BUF_TYPE_VIDEO_CAPTURE != buf_type) {
+ dev_err(vpfe->dev, "Invalid buf type\n");
+ return -EINVAL;
+ }
+
+ /* If io is allowed for this file handle, return error */
+ if (!fh->io_allowed) {
+ dev_err(vpfe->dev, "fh->io_allowed\n");
+ return -EACCES;
+ }
+
+ /* If streaming is not started, return error */
+ if (!vpfe->started) {
+ dev_err(vpfe->dev, "device started\n");
+ return -EINVAL;
+ }
+
+ ret = mutex_lock_interruptible(&vpfe->lock);
+ if (ret)
+ return ret;
+
+ vpfe_stop_isif_capture(vpfe);
+ vpfe_detach_irq(vpfe);
+
+ sdinfo = vpfe->current_subdev;
+ ret = v4l2_device_call_until_err(&vpfe->v4l2_dev, sdinfo->grp_id,
+ video, s_stream, 0);
+
+ if (ret && (ret != -ENOIOCTLCMD))
+ dev_err(vpfe->dev, "stream off failed in subdev\n");
+
+ ret = vb2_streamoff(&vpfe->buffer_queue, buf_type);
+ mutex_unlock(&vpfe->lock);
+
+ return ret;
+}
+
+static int vpfe_cropcap(struct file *file, void *priv,
+ struct v4l2_cropcap *crop)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+
+ if (vpfe->std_index >= ARRAY_SIZE(vpfe_standards))
+ return -EINVAL;
+
+ memset(crop, 0, sizeof(struct v4l2_cropcap));
+ crop->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ crop->defrect.width = vpfe_standards[vpfe->std_index].width;
+ crop->bounds.width = crop->defrect.width;
+ crop->defrect.height = vpfe_standards[vpfe->std_index].height;
+ crop->bounds.height = crop->defrect.height;
+ crop->pixelaspect = vpfe_standards[vpfe->std_index].pixelaspect;
+
+ return 0;
+}
+
+static int vpfe_g_crop(struct file *file, void *priv,
+ struct v4l2_crop *crop)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+
+ crop->c = vpfe->crop;
+
+ return 0;
+}
+
+static int vpfe_s_crop(struct file *file, void *priv,
+ const struct v4l2_crop *crop)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+ struct v4l2_rect rect = crop->c;
+ int ret = 0;
+
+ if (vpfe->started) {
+ /* make sure streaming is not started */
+ dev_err(vpfe->dev,
+ "Cannot change crop when streaming is ON\n");
+ return -EBUSY;
+ }
+
+ ret = mutex_lock_interruptible(&vpfe->lock);
+ if (ret)
+ return ret;
+
+ if (rect.top < 0 || rect.left < 0) {
+ dev_err(vpfe->dev,
+ "doesn't support negative values for top & left\n");
+ ret = -EINVAL;
+ goto unlock_out;
+ }
+
+ /* adjust the width to 16 pixel boundary */
+ rect.width = ((rect.width + 15) & ~0xf);
+
+ /* make sure parameters are valid */
+ if ((rect.left + rect.width >
+ vpfe->std_info.active_pixels) ||
+ (rect.top + rect.height >
+ vpfe->std_info.active_lines)) {
+ dev_err(vpfe->dev, "Error in S_CROP params\n");
+ ret = -EINVAL;
+ goto unlock_out;
+ }
+ vpfe->vpfe_isif.hw_ops.set_image_window(
+ &vpfe->vpfe_isif, &rect, vpfe->bpp);
+ vpfe->fmt.fmt.pix.width = rect.width;
+ vpfe->fmt.fmt.pix.height = rect.height;
+ vpfe->fmt.fmt.pix.bytesperline =
+ vpfe->vpfe_isif.hw_ops.get_line_length(
+ &vpfe->vpfe_isif);
+ vpfe->fmt.fmt.pix.sizeimage =
+ vpfe->fmt.fmt.pix.bytesperline *
+ vpfe->fmt.fmt.pix.height;
+ vpfe->crop = rect;
+
+unlock_out:
+ mutex_unlock(&vpfe->lock);
+
+ return ret;
+}
+
+
+static long vpfe_param_handler(struct file *file, void *priv,
+ bool valid_prio, unsigned int cmd, void *param)
+{
+ struct vpfe_device *vpfe = video_drvdata(file);
+ int ret = 0;
+
+ if (vpfe->started)
+ return -EBUSY;
+
+ ret = mutex_lock_interruptible(&vpfe->lock);
+ if (ret)
+ return ret;
+
+ switch (cmd) {
+ case VPFE_CMD_S_ISIF_RAW_PARAMS:
+ dev_warn(vpfe->dev,
+ "VPFE_CMD_S_ISIF_RAW_PARAMS: experimental ioctl\n");
+ if (vpfe->vpfe_isif.hw_ops.set_params) {
+ ret = vpfe->vpfe_isif.hw_ops.set_params(
+ &vpfe->vpfe_isif, param);
+ if (ret)
+ goto unlock_out;
+ ret = vpfe_get_isif_image_format(vpfe, &vpfe->fmt);
+ if (ret < 0)
+ goto unlock_out;
+ } else {
+ ret = -EINVAL;
+ }
+ break;
+ default:
+ ret = -ENOTTY;
+ }
+
+unlock_out:
+ mutex_unlock(&vpfe->lock);
+
+ return ret;
+}
+
+static int vpfe_vidioc_g_priority(struct file *file, void *priv,
+ enum v4l2_priority *p)
+{
+ struct vpfe_fh *fh = file->private_data;
+ struct vpfe_device *vpfe = fh->vpfe;
+
+ *p = v4l2_prio_max(&vpfe->prio);
+
+ return 0;
+}
+
+static int vpfe_vidioc_s_priority(struct file *file, void *priv,
+ enum v4l2_priority p)
+{
+ struct vpfe_fh *fh = file->private_data;
+ struct vpfe_device *vpfe = fh->vpfe;
+
+ return v4l2_prio_change(&vpfe->prio, &fh->prio, p);
+}
+
+/* vpfe capture ioctl operations */
+static const struct v4l2_ioctl_ops vpfe_ioctl_ops = {
+ .vidioc_querycap = vpfe_querycap,
+ .vidioc_g_priority = vpfe_vidioc_g_priority,
+ .vidioc_s_priority = vpfe_vidioc_s_priority,
+ .vidioc_g_fmt_vid_cap = vpfe_g_fmt,
+ .vidioc_enum_fmt_vid_cap = vpfe_enum_fmt,
+ .vidioc_s_fmt_vid_cap = vpfe_s_fmt,
+ .vidioc_try_fmt_vid_cap = vpfe_try_fmt,
+ .vidioc_enum_framesizes = vpfe_enum_size,
+ .vidioc_enum_input = vpfe_enum_input,
+ .vidioc_g_input = vpfe_g_input,
+ .vidioc_s_input = vpfe_s_input,
+ .vidioc_querystd = vpfe_querystd,
+ .vidioc_s_std = vpfe_s_std,
+ .vidioc_g_std = vpfe_g_std,
+ .vidioc_reqbufs = vpfe_reqbufs,
+ .vidioc_querybuf = vpfe_querybuf,
+ .vidioc_qbuf = vpfe_qbuf,
+ .vidioc_dqbuf = vpfe_dqbuf,
+ .vidioc_streamon = vpfe_streamon,
+ .vidioc_streamoff = vpfe_streamoff,
+ .vidioc_cropcap = vpfe_cropcap,
+ .vidioc_g_crop = vpfe_g_crop,
+ .vidioc_s_crop = vpfe_s_crop,
+ .vidioc_default = vpfe_param_handler,
+};
+
+static int vpfe_async_bound(struct v4l2_async_notifier *notifier,
+ struct v4l2_subdev *subdev,
+ struct v4l2_async_subdev *asd)
+{
+ int i, j;
+ struct vpfe_subdev_info *sdinfo;
+ struct vpfe_device *vpfe = container_of(notifier->v4l2_dev,
+ struct vpfe_device, v4l2_dev);
+
+ for (i = 0; i < vpfe->cfg->num_subdevs; i++) {
+ sdinfo = &vpfe->cfg->sub_devs[i];
+
+ if (!strcmp(sdinfo->name, subdev->name)) {
+ vpfe->sd[i] = subdev;
+ dev_info(vpfe->dev,
+ "v4l2 sub device %s registered\n",
+ subdev->name);
+ vpfe->sd[i]->grp_id =
+ sdinfo->grp_id;
+ /* update tvnorms from the sub devices */
+ for (j = 0;
+ j < sdinfo->num_inputs;
+ j++) {
+ vpfe->video_dev->tvnorms |=
+ sdinfo->inputs[j].std;
+ }
+ return 0;
+ }
+ }
+
+ dev_warn(vpfe->dev, "vpfe_async_bound sub device (%s) not matched\n",
+ subdev->name);
+
+ return -EINVAL;
+}
+
+static int vpfe_probe_complete(struct vpfe_device *vpfe)
+{
+ int err;
+ unsigned int flags;
+
+ spin_lock_init(&vpfe->irqlock);
+ spin_lock_init(&vpfe->dma_queue_lock);
+ mutex_init(&vpfe->lock);
+
+ /* Initialize field of the device objects */
+ vpfe->numbuffers = config_params.numbuffers;
+
+ /* Initialize prio member of device object */
+ v4l2_prio_init(&vpfe->prio);
+
+ vpfe->pad.flags = MEDIA_PAD_FL_SINK;
+ err = media_entity_init(&vpfe->video_dev->entity,
+ 1, &vpfe->pad, 0);
+ if (err < 0)
+ return err;
+
+ /* set video driver private data */
+ video_set_drvdata(vpfe->video_dev, vpfe);
+ vpfe->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+ dev_info(vpfe->dev, "%s capture driver initialized\n",
+ vpfe->cfg->card_name);
+
+ /* set first sub device as current one */
+ vpfe->current_subdev = &vpfe->cfg->sub_devs[0];
+
+ /* select input 0 */
+ err = vpfe_set_input(vpfe, 0);
+ if (err)
+ goto probe_out;
+
+ /* connect subdev to video node */
+ dev_err(vpfe->dev, "sd[0]->entity is %x\n",
+ (unsigned int)&vpfe->sd[0]->entity);
+ dev_err(vpfe->dev, "video_dev->entity is %x\n",
+ (unsigned int)&vpfe->video_dev->entity);
+
+ dev_err(vpfe->dev, "source_pad:%d source->num_pads:%d\n",
+ 0, vpfe->sd[0]->entity.num_pads);
+ dev_err(vpfe->dev, "sink_pad:%d sink->num_pads:%d\n",
+ 0, vpfe->video_dev->entity.num_pads);
+
+ flags = MEDIA_LNK_FL_ENABLED;
+ err = media_entity_create_link(&vpfe->sd[0]->entity, 0,
+ &vpfe->video_dev->entity,
+ 0, flags);
+ if (err < 0)
+ goto probe_out;
+
+ err = v4l2_device_register_subdev_nodes(&vpfe->v4l2_dev);
+ if (err < 0)
+ goto probe_out;
+
+ err = video_register_device(vpfe->video_dev,
+ VFL_TYPE_GRABBER, -1);
+ if (err) {
+ dev_err(vpfe->dev,
+ "Unable to register video device.\n");
+ goto probe_out;
+ }
+ dev_info(vpfe->dev, "video device registered as %s\n",
+ video_device_node_name(vpfe->video_dev));
+
+ return 0;
+
+probe_out:
+ v4l2_device_unregister(&vpfe->v4l2_dev);
+
+ return err;
+}
+
+static int vpfe_async_complete(struct v4l2_async_notifier *notifier)
+{
+ struct vpfe_device *vpfe = container_of(notifier->v4l2_dev,
+ struct vpfe_device, v4l2_dev);
+ return vpfe_probe_complete(vpfe);
+}
+
+static struct vpfe_config *
+vpfe_get_pdata(struct platform_device *pdev)
+{
+ struct vpfe_config *pdata;
+ struct device_node *endpoint, *rem;
+ struct vpfe_subdev_info *sdinfo;
+ const char *instance_name;
+
+ if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node)
+ return pdev->dev.platform_data;
+
+ /* the hwmods property basically provides us with the instance
+ * name and number. So use instead of creating some other means
+ */
+ of_property_read_string(pdev->dev.of_node, "ti,hwmods", &instance_name);
+
+ endpoint = of_graph_get_next_endpoint(pdev->dev.of_node, NULL);
+ if (!endpoint)
+ return NULL;
+
+ pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ goto done;
+
+ /* Populate vpfe_config with default if needed */
+ pdata->card_name = (char *)instance_name;
+ pdata->isif = "AM437x ISIF";
+
+ /* We only support one sub_devive per port */
+ /* Will need cleanup */
+ pdata->num_subdevs = 1;
+ sdinfo = &pdata->sub_devs[0];
+ sdinfo->grp_id = 0;
+
+ /* There is only one input on the camera */
+ sdinfo->num_inputs = 1;
+ sdinfo->inputs[0].index = 0;
+ strcpy(sdinfo->inputs[0].name, "camera");
+ sdinfo->inputs[0].type = V4L2_INPUT_TYPE_CAMERA;
+ sdinfo->inputs[0].std = V4L2_STD_ALL;
+ sdinfo->inputs[0].capabilities = V4L2_IN_CAP_STD;
+
+ sdinfo->can_route = 0;
+ sdinfo->routes = NULL;
+
+ of_property_read_u32(endpoint, "if_type",
+ &sdinfo->isif_if_params.if_type);
+ if (sdinfo->isif_if_params.if_type < 0)
+ sdinfo->isif_if_params.if_type = VPFE_RAW_BAYER;
+ of_property_read_u32(endpoint, "bus_width",
+ &sdinfo->isif_if_params.bus_width);
+ if (sdinfo->isif_if_params.bus_width != 10)
+ sdinfo->isif_if_params.bus_width = 8;
+ of_property_read_u32(endpoint, "hdpol",
+ &sdinfo->isif_if_params.hdpol);
+ if (sdinfo->isif_if_params.hdpol != 0)
+ sdinfo->isif_if_params.hdpol = 1;
+ of_property_read_u32(endpoint, "vdpol",
+ &sdinfo->isif_if_params.vdpol);
+ if (sdinfo->isif_if_params.vdpol != 0)
+ sdinfo->isif_if_params.vdpol = 1;
+
+ rem = of_graph_get_remote_port_parent(endpoint);
+ if (rem == NULL) {
+ dev_err(&pdev->dev, "Remote device at %s not found\n",
+ endpoint->full_name);
+ goto done;
+ } else {
+ strncpy(sdinfo->name, rem->name, sizeof(sdinfo->name));
+ }
+
+ sdinfo->asd.match_type = V4L2_ASYNC_MATCH_OF;
+ sdinfo->asd.match.of.node = rem;
+ pdata->asd[0] = &sdinfo->asd;
+ pdata->asd_sizes = 1;
+ of_node_put(rem);
+
+done:
+ of_node_put(endpoint);
+
+ return pdata;
+}
+
+static int vpfe_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct vpfe_subdev_info *sdinfo;
+ struct vpfe_config *vpfe_cfg;
+ struct vpfe_device *vpfe;
+ struct i2c_adapter *i2c_adap;
+ struct video_device *vfd;
+ int ret = -ENOMEM, i, j;
+ int num_subdevs = 0;
+
+ /* Default number of buffers should be 3 */
+ if ((numbuffers > 0) &&
+ (numbuffers < config_params.min_numbuffers))
+ numbuffers = config_params.min_numbuffers;
+
+ config_params.numbuffers = numbuffers;
+
+ vpfe = devm_kzalloc(dev, sizeof(*vpfe), GFP_KERNEL);
+ if (!vpfe)
+ return -ENOMEM;
+
+ vpfe->sd = devm_kmalloc_array(dev, num_subdevs,
+ sizeof(struct v4l2_subdev), GFP_KERNEL);
+ if (!vpfe->sd)
+ return -ENOMEM;
+
+ vpfe->dev = dev;
+
+ vpfe_cfg = vpfe_get_pdata(pdev);
+ if (!vpfe_cfg) {
+ dev_err(dev, "Unable to get vpfe config\n");
+ return -ENODEV;
+ }
+
+ vpfe->cfg = vpfe_cfg;
+ if (!vpfe_cfg->isif ||
+ !vpfe_cfg->card_name ||
+ !vpfe_cfg->sub_devs) {
+ dev_err(dev, "null ptr in vpfe_cfg\n");
+ return -ENOENT;
+ }
+
+ vpfe->isif_irq0 = platform_get_irq(pdev, 0);
+ if (vpfe->isif_irq0 < 0) {
+ dev_err(vpfe->dev,
+ "Unable to get interrupt for VINT0\n");
+ return -ENODEV;
+ }
+
+ ret = devm_request_irq(dev, vpfe->isif_irq0, vpfe_isr, 0,
+ "vpfe_capture0", vpfe);
+ if (ret != 0) {
+ dev_err(vpfe->dev, "Unable to request interrupt\n");
+ return ret;
+ }
+
+ /* Allocate memory for video device */
+ vfd = video_device_alloc();
+ if (!vfd)
+ return -ENOMEM;
+
+ /* Initialize field of video device */
+ vfd->release = video_device_release;
+ vfd->fops = &vpfe_fops;
+ vfd->ioctl_ops = &vpfe_ioctl_ops;
+ vfd->tvnorms = 0;
+ vfd->v4l2_dev = &vpfe->v4l2_dev;
+
+ snprintf(vfd->name, sizeof(vfd->name),
+ "%s_V%d.%d.%d",
+ CAPTURE_DRV_NAME,
+ (VPFE_CAPTURE_VERSION_CODE >> 16) & 0xff,
+ (VPFE_CAPTURE_VERSION_CODE >> 8) & 0xff,
+ (VPFE_CAPTURE_VERSION_CODE) & 0xff);
+
+ vpfe->video_dev = vfd;
+ vpfe->media_dev.dev = vpfe->dev;
+
+ strcpy((char *)&vpfe->media_dev.model, "ti-vpfe-media");
+
+ ret = media_device_register(&vpfe->media_dev);
+ if (ret) {
+ dev_err(vpfe->dev,
+ "Unable to register media device.\n");
+ goto probe_out_video_release;
+ }
+
+ vpfe->v4l2_dev.mdev = &vpfe->media_dev;
+
+ ret = v4l2_device_register(&pdev->dev, &vpfe->v4l2_dev);
+ if (ret) {
+ dev_err(vpfe->dev,
+ "Unable to register v4l2 device.\n");
+ goto probe_out_media_unregister;
+ }
+
+ ret = vpfe_isif_init(&vpfe->vpfe_isif, pdev);
+ if (ret) {
+ dev_err(vpfe->dev, "Error initializing isif\n");
+ ret = -EINVAL;
+ goto probe_out_v4l2_unregister;
+ }
+
+ num_subdevs = vpfe_cfg->num_subdevs;
+ if (vpfe->cfg->asd_sizes == 0) {
+ i2c_adap = i2c_get_adapter(vpfe_cfg->i2c_adapter_id);
+
+ for (i = 0; i < num_subdevs; i++) {
+ struct v4l2_input *inps;
+
+ sdinfo = &vpfe_cfg->sub_devs[i];
+
+ /* Load up the subdevice */
+ vpfe->sd[i] =
+ v4l2_i2c_new_subdev_board(&vpfe->v4l2_dev,
+ i2c_adap,
+ &sdinfo->board_info,
+ NULL);
+ if (vpfe->sd[i]) {
+ dev_info(vpfe->dev,
+ "v4l2 sub device %s registered\n",
+ sdinfo->name);
+ vpfe->sd[i]->grp_id = sdinfo->grp_id;
+ /* update tvnorms from the sub devices */
+ for (j = 0; j < sdinfo->num_inputs; j++) {
+ inps = &sdinfo->inputs[j];
+ vfd->tvnorms |= inps->std;
+ }
+ } else {
+ dev_err(vpfe->dev,
+ "v4l2 sub device %s register fails\n",
+ sdinfo->name);
+ goto probe_out_v4l2_unregister;
+ }
+ }
+ vpfe_probe_complete(vpfe);
+
+ } else {
+ vpfe->notifier.subdevs = vpfe->cfg->asd;
+ vpfe->notifier.num_subdevs = vpfe->cfg->asd_sizes;
+ vpfe->notifier.bound = vpfe_async_bound;
+ vpfe->notifier.complete = vpfe_async_complete;
+ ret = v4l2_async_notifier_register(&vpfe->v4l2_dev,
+ &vpfe->notifier);
+ if (ret) {
+ dev_err(vpfe->dev, "Error registering async notifier\n");
+ ret = -EINVAL;
+ goto probe_out_v4l2_unregister;
+ }
+ }
+
+ return 0;
+
+probe_out_v4l2_unregister:
+ v4l2_device_unregister(&vpfe->v4l2_dev);
+
+probe_out_media_unregister:
+ media_device_unregister(&vpfe->media_dev);
+
+probe_out_video_release:
+ if (!video_is_registered(vpfe->video_dev))
+ video_device_release(vpfe->video_dev);
+
+ return ret;
+}
+
+/*
+ * vpfe_remove : It un-register device from V4L2 driver
+ */
+static int vpfe_remove(struct platform_device *pdev)
+{
+ struct vpfe_device *vpfe = platform_get_drvdata(pdev);
+
+ isif_remove(&vpfe->vpfe_isif, pdev);
+ v4l2_async_notifier_unregister(&vpfe->notifier);
+ v4l2_device_unregister(&vpfe->v4l2_dev);
+ media_device_unregister(&vpfe->media_dev);
+ video_unregister_device(vpfe->video_dev);
+
+ return 0;
+}
+
+static int vpfe_suspend(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct vpfe_device *vpfe = platform_get_drvdata(pdev);
+
+ isif_suspend(&vpfe->vpfe_isif, dev);
+ pinctrl_pm_select_sleep_state(dev);
+
+ return 0;
+}
+
+static int vpfe_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct vpfe_device *vpfe = platform_get_drvdata(pdev);
+
+ isif_resume(&vpfe->vpfe_isif, dev);
+ pinctrl_pm_select_default_state(dev);
+
+ return 0;
+}
+
+static const struct dev_pm_ops vpfe_dev_pm_ops = {
+ .suspend = vpfe_suspend,
+ .resume = vpfe_resume,
+};
+
+static const struct of_device_id vpfe_of_match[] = {
+ { .compatible = "ti,am437x-vpfe", },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, vpfe_of_match);
+
+static struct platform_driver vpfe_driver = {
+ .driver = {
+ .name = CAPTURE_DRV_NAME,
+ .owner = THIS_MODULE,
+ .pm = &vpfe_dev_pm_ops,
+ .of_match_table = vpfe_of_match,
+ },
+ .probe = vpfe_probe,
+ .remove = vpfe_remove,
+};
+
+module_platform_driver(vpfe_driver);
diff --git a/drivers/media/platform/ti-vpfe/vpfe_capture.h b/drivers/media/platform/ti-vpfe/vpfe_capture.h
new file mode 100644
index 0000000..91be779
--- /dev/null
+++ b/drivers/media/platform/ti-vpfe/vpfe_capture.h
@@ -0,0 +1,263 @@
+/*
+ * TI VPFE Multi instance Capture Driver
+ *
+ * Copyright (C) 2013 - 2014 Texas Instruments, Inc.
+ *
+ * Benoit Parrot <bparrot@xxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _VPFE_CAPTURE_H
+#define _VPFE_CAPTURE_H
+
+#ifdef __KERNEL__
+
+/* Header files */
+#include <media/v4l2-dev.h>
+#include <linux/videodev2.h>
+#include <linux/clk.h>
+#include <linux/i2c.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-device.h>
+#include <media/videobuf2-dma-contig.h>
+
+enum vpfe_pin_pol {
+ VPFE_PINPOL_POSITIVE,
+ VPFE_PINPOL_NEGATIVE
+};
+
+enum vpfe_hw_if_type {
+ /* BT656 - 8 bit */
+ VPFE_BT656,
+ /* BT1120 - 16 bit */
+ VPFE_BT1120,
+ /* Raw Bayer */
+ VPFE_RAW_BAYER,
+ /* YCbCr - 8 bit with external sync */
+ VPFE_YCBCR_SYNC_8,
+ /* YCbCr - 16 bit with external sync */
+ VPFE_YCBCR_SYNC_16,
+ /* BT656 - 10 bit */
+ VPFE_BT656_10BIT
+};
+
+/* interface description */
+struct vpfe_hw_if_param {
+ enum vpfe_hw_if_type if_type;
+ enum vpfe_pin_pol hdpol;
+ enum vpfe_pin_pol vdpol;
+ unsigned int bus_width;
+};
+
+#include "am437x_isif.h"
+
+#define VPFE_CAPTURE_NUM_DECODERS 5
+
+/* Macros */
+#define VPFE_MAJOR_RELEASE 0
+#define VPFE_MINOR_RELEASE 0
+#define VPFE_BUILD 1
+#define VPFE_CAPTURE_VERSION_CODE ((VPFE_MAJOR_RELEASE << 16) | \
+ (VPFE_MINOR_RELEASE << 8) | \
+ VPFE_BUILD)
+
+#define CAPTURE_DRV_NAME "vpfe-capture"
+#define VPFE_MAX_SUBDEV 2
+#define VPFE_MAX_INPUTS 2
+
+struct vpfe_pixel_format {
+ struct v4l2_fmtdesc fmtdesc;
+ /* bytes per pixel */
+ int bpp;
+};
+
+struct vpfe_std_info {
+ int active_pixels;
+ int active_lines;
+ /* current frame format */
+ int frame_format;
+};
+
+struct vpfe_route {
+ u32 input;
+ u32 output;
+};
+
+struct vpfe_subdev_info {
+ /* Sub device name */
+ char name[32];
+ /* Sub device group id */
+ int grp_id;
+ /* Number of inputs supported */
+ int num_inputs;
+ /* inputs available at the sub device */
+ struct v4l2_input inputs[VPFE_MAX_INPUTS];
+ /* Sub dev routing information for each input */
+ struct vpfe_route *routes;
+ /* check if sub dev supports routing */
+ int can_route;
+ /* isif bus/interface configuration */
+ struct vpfe_hw_if_param isif_if_params;
+ /* i2c subdevice board info */
+ struct i2c_board_info board_info;
+ struct v4l2_async_subdev asd;
+};
+
+struct vpfe_config {
+ /* Number of sub devices connected to vpfe */
+ int num_subdevs;
+ /* i2c bus adapter no */
+ int i2c_adapter_id;
+ /* information about each subdev */
+ struct vpfe_subdev_info sub_devs[VPFE_MAX_SUBDEV];
+ /* evm card info */
+ char *card_name;
+ /* isif name */
+ char *isif;
+ /* vpfe clock */
+ struct clk *vpssclk;
+ struct clk *slaveclk;
+ /* Function for Clearing the interrupt */
+ void (*clr_intr)(int vdint);
+ /* Flat array, arranged in groups */
+ struct v4l2_async_subdev *asd[VPFE_MAX_SUBDEV];
+ int asd_sizes;
+};
+
+struct vpfe_cap_buffer {
+ struct vb2_buffer vb;
+ struct list_head list;
+};
+
+struct vpfe_device {
+ /* V4l2 specific parameters */
+ /* Identifies video device for this channel */
+ struct video_device *video_dev;
+ /* media pad of video entity */
+ struct media_pad pad;
+ /* sub devices */
+ struct v4l2_subdev **sd;
+ /* vpfe cfg */
+ struct vpfe_config *cfg;
+ /* V4l2 device */
+ struct v4l2_device v4l2_dev;
+ /* parent device */
+ struct device *dev;
+ /* Subdevive Async Notifier */
+ struct v4l2_async_notifier notifier;
+ /* Used to keep track of state of the priority */
+ struct v4l2_prio_state prio;
+ /* number of open instances of the channel */
+ u32 usrs;
+ /* Indicates id of the field which is being displayed */
+ u32 field_id;
+ /* flag to indicate whether decoder is initialized */
+ u8 initialized;
+ /* current interface type */
+ struct vpfe_hw_if_param vpfe_if_params;
+ /* ptr to currently selected sub device */
+ struct vpfe_subdev_info *current_subdev;
+ /* current input at the sub device */
+ int current_input;
+ /* Keeps track of the information about the standard */
+ struct vpfe_std_info std_info;
+ /* std index into std table */
+ int std_index;
+ /* IRQs used when CCDC/ISIF output to SDRAM */
+ unsigned int isif_irq0;
+ unsigned int isif_irq1;
+ /* number of buffers in fbuffers */
+ u32 numbuffers;
+ /* List of buffer pointers for storing frames */
+ u8 *fbuffers[VIDEO_MAX_FRAME];
+ /* Pointer pointing to current v4l2_buffer */
+ struct vpfe_cap_buffer *cur_frm;
+ /* Pointer pointing to next v4l2_buffer */
+ struct vpfe_cap_buffer *next_frm;
+ /*
+ * This field keeps track of type of buffer exchange mechanism
+ * user has selected
+ */
+ enum v4l2_memory memory;
+ /* Used to store pixel format */
+ struct v4l2_format fmt;
+ /* Used to store current bytes per pixel based on current format */
+ unsigned int bpp;
+ /*
+ * used when IMP is chained to store the crop window which
+ * is different from the image window
+ */
+ struct v4l2_rect crop;
+ /* Buffer queue used in video-buf */
+ struct vb2_queue buffer_queue;
+ /* Allocator-specific contexts for each plane */
+ struct vb2_alloc_ctx *alloc_ctx;
+ /* Queue of filled frames */
+ struct list_head dma_queue;
+ /* Used in video-buf */
+ spinlock_t irqlock;
+ /* IRQ lock for DMA queue */
+ spinlock_t dma_queue_lock;
+ /* lock used to access this structure */
+ struct mutex lock;
+ /* number of users performing IO */
+ u32 io_usrs;
+ /* Indicates whether streaming started */
+ u8 started;
+ /*
+ * offset where second field starts from the starting of the
+ * buffer for field separated YCbCr formats
+ */
+ u32 field_off;
+ /* media device */
+ struct media_device media_dev;
+ /* isif sub device */
+ struct vpfe_isif_device vpfe_isif;
+};
+
+/* File handle structure */
+struct vpfe_fh {
+ struct vpfe_device *vpfe;
+ /* Indicates whether this file handle is doing IO */
+ u8 io_allowed;
+ /* Used to keep track priority of this instance */
+ enum v4l2_priority prio;
+};
+
+struct vpfe_config_params {
+ u8 min_numbuffers;
+ u8 numbuffers;
+ u32 min_bufsize;
+ u32 device_bufsize;
+};
+
+struct vpfe_v4l2_subdev {
+ struct list_head list; /* internal use only */
+ struct i2c_client *client;
+ void *priv;
+ struct device_node *node;
+};
+
+void vpfe_register_subdev(struct vpfe_v4l2_subdev *subdev);
+void vpfe_unregister_subdev(struct vpfe_v4l2_subdev *subdev);
+
+#endif /* End of __KERNEL__ */
+/**
+ * VPFE_CMD_S_ISIF_RAW_PARAMS - EXPERIMENTAL IOCTL to set raw capture params
+ * This can be used to configure modules such as defect pixel correction,
+ * color space conversion, culling etc. This is an experimental ioctl that
+ * will change in future kernels. So use this ioctl with care !
+ * TODO: This is to be split into multiple ioctls and also explore the
+ * possibility of extending the v4l2 api to include this
+ **/
+#define VPFE_CMD_S_ISIF_RAW_PARAMS _IOW('V', BASE_VIDIOC_PRIVATE + 1, \
+ void *)
+#endif /* _VPFE_CAPTURE_H */
--
2.0.0.390.gcb682f8
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