This v4l2 camera driver is based on soc-camera and videobuf2 framework
Support Marvell MMP Soc family TD-PXA910/MMP2-PXA688/MMP3-PXA2128 CCIC
Support Dual CCIC controllers on PXA688/PXA2128
Support MIPI-CSI2 mode and DVP-Parallel mode
Change-Id: I0d6156e29a278108dfb26dc1e891ca069e31666c
Signed-off-by: Albert Wang <twang13@xxxxxxxxxxx>
---
arch/arm/mach-mmp/include/mach/camera.h | 21 +
arch/arm/mach-mmp/include/mach/regs-apmu.h | 7 +-
drivers/media/video/Kconfig | 9 +
drivers/media/video/Makefile | 1 +
drivers/media/video/mmp_camera.c | 1134 ++++++++++++++++++++++++++++
drivers/media/video/mmp_camera.h | 241 ++++++
6 files changed, 1412 insertions(+), 1 deletions(-)
create mode 100644 arch/arm/mach-mmp/include/mach/camera.h
create mode 100644 drivers/media/video/mmp_camera.c
create mode 100644 drivers/media/video/mmp_camera.h
diff --git a/arch/arm/mach-mmp/include/mach/camera.h b/arch/arm/mach-mmp/include/mach/camera.h
new file mode 100644
index 0000000..d13cd91
--- /dev/null
+++ b/arch/arm/mach-mmp/include/mach/camera.h
@@ -0,0 +1,21 @@
+#ifndef __ASM_ARCH_CAMERA_H__
+#define __ASM_ARCH_CAMERA_H__
+
+struct mmp_cam_pdata {
+ struct clk *clk[3]; /* CCIC_GATE, CCIC_RST, CCIC_DBG clocks */
+ char *name;
+ int clk_enabled;
+ int dphy[3]; /* DPHY: CSI2_DPHY3, CSI2_DPHY5, CSI2_DPHY6 */
+ int bus_type;
+ int mipi_enabled; /* MIPI enabled flag */
+ int lane; /* ccic used lane number; 0 means DVP mode */
+ int dma_burst;
+ int mclk_min;
+ int mclk_src;
+ int mclk_div;
+ int (*init_clk)(struct device *dev, int init);
+ void (*enable_clk)(struct device *dev, int on);
+};
+
+#endif
+
diff --git a/arch/arm/mach-mmp/include/mach/regs-apmu.h b/arch/arm/mach-mmp/include/mach/regs-apmu.h
index 8447ac6..5616340 100644
--- a/arch/arm/mach-mmp/include/mach/regs-apmu.h
+++ b/arch/arm/mach-mmp/include/mach/regs-apmu.h
@@ -19,7 +19,12 @@
/* Clock Reset Control */
#define APMU_IRE APMU_REG(0x048)
#define APMU_LCD APMU_REG(0x04c)
-#define APMU_CCIC APMU_REG(0x050)
+#define APMU_CCIC_GATE APMU_REG(0x028)
+#define APMU_CCIC_RST APMU_REG(0x050)
+#define APMU_CCIC_DBG APMU_REG(0x088)
+#define APMU_CCIC2_GATE APMU_REG(0x118)
+#define APMU_CCIC2_RST APMU_REG(0x0f4)
+#define APMU_CCIC2_DBG APMU_REG(0x088)
#define APMU_SDH0 APMU_REG(0x054)
#define APMU_SDH1 APMU_REG(0x058)
#define APMU_USB APMU_REG(0x05c)
diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
index ce1e7ba..244d418 100644
--- a/drivers/media/video/Kconfig
+++ b/drivers/media/video/Kconfig
@@ -1087,6 +1087,15 @@ config VIDEO_PXA27x
---help---
This is a v4l2 driver for the PXA27x Quick Capture Interface
+config VIDEO_MMP
+ tristate "Marvell MMP CCIC driver based on SOC_CAMERA"
+ depends on VIDEO_DEV && SOC_CAMERA
+ select VIDEOBUF2_DMA_CONTIG
+ ---help---
+ This is a v4l2 driver for the Marvell PXA910/PXA688/PXA2128 CCIC
+ To compile this driver as a module, choose M here: the module will
+ be called mmp_camera.
+
config VIDEO_SH_MOBILE_CSI2
tristate "SuperH Mobile MIPI CSI-2 Interface driver"
depends on VIDEO_DEV && SOC_CAMERA && HAVE_CLK
diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile
index a6282a3..12defa7 100644
--- a/drivers/media/video/Makefile
+++ b/drivers/media/video/Makefile
@@ -178,6 +178,7 @@ obj-$(CONFIG_VIDEO_MX1) += mx1_camera.o
obj-$(CONFIG_VIDEO_MX2) += mx2_camera.o
obj-$(CONFIG_VIDEO_MX3) += mx3_camera.o
obj-$(CONFIG_VIDEO_PXA27x) += pxa_camera.o
+obj-$(CONFIG_VIDEO_MMP) += mmp_camera.o
obj-$(CONFIG_VIDEO_SH_MOBILE_CSI2) += sh_mobile_csi2.o
obj-$(CONFIG_VIDEO_SH_MOBILE_CEU) += sh_mobile_ceu_camera.o
obj-$(CONFIG_VIDEO_OMAP1) += omap1_camera.o
diff --git a/drivers/media/video/mmp_camera.c b/drivers/media/video/mmp_camera.c
new file mode 100644
index 0000000..2e6cc5c
--- /dev/null
+++ b/drivers/media/video/mmp_camera.c
@@ -0,0 +1,1134 @@
+/*
+ * V4L2 Driver for Marvell Mobile SoC PXA910/PXA688/PXA2128 CCIC
+ * (CMOS Camera Interface Controller)
+ *
+ * This driver is based on soc_camera and videobuf2 framework,
+ * but part of the low level register function is base on cafe-driver.c
+ *
+ * Copyright 2006 One Laptop Per Child Association, Inc.
+ * Copyright 2006-7 Jonathan Corbet <corbet@xxxxxxx>
+ *
+ * Copyright (C) 2011-2012, Marvell International Ltd.
+ * Kassey Lee <ygli@xxxxxxxxxxx>
+ * Angela Wan <jwan@xxxxxxxxxxx>
+ * Albert Wang <twang13@xxxxxxxxxxx>
+ * Lei Wen <leiwen@xxxxxxxxxxx>
+ * Fangsuo Wu <fswu@xxxxxxxxxxx>
+ * Sarah Zhang <xiazh@xxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/version.h>
+#include <linux/platform_device.h>
+#include <linux/time.h>
+#include <linux/videodev2.h>
+
+#include <media/soc_camera.h>
+#include <media/soc_mediabus.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-dev.h>
+#include <media/videobuf2-dma-contig.h>
+#include <media/v4l2-chip-ident.h>
+
+#include <mach/regs-apmu.h>
+#include <mach/camera.h>
+
+#include "mmp_camera.h"
+
+#define MMP_CAM_DRV_NAME "mmp-camera"
+
+static const struct soc_mbus_pixelfmt ccic_formats[] = {
+ {
+ .fourcc = V4L2_PIX_FMT_UYVY,
+ .name = "YUV422PACKED",
+ .bits_per_sample = 8,
+ .packing = SOC_MBUS_PACKING_2X8_PADLO,
+ .order = SOC_MBUS_ORDER_LE,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_YUV422P,
+ .name = "YUV422PLANAR",
+ .bits_per_sample = 8,
+ .packing = SOC_MBUS_PACKING_2X8_PADLO,
+ .order = SOC_MBUS_ORDER_LE,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_YUV420,
+ .name = "YUV420PLANAR",
+ .bits_per_sample = 12,
+ .packing = SOC_MBUS_PACKING_NONE,
+ .order = SOC_MBUS_ORDER_LE,
+ },
+ {
+ .fourcc = V4L2_PIX_FMT_YVU420,
+ .name = "YVU420PLANAR",
+ .bits_per_sample = 12,
+ .packing = SOC_MBUS_PACKING_NONE,
+ .order = SOC_MBUS_ORDER_LE,
+ },
+};
+
+static void ccic_config_phy(struct mmp_camera_dev *pcdev, int enable)
+{
+ struct mmp_cam_pdata *pdata = pcdev->pdev->dev.platform_data;
+ struct device *dev = &pcdev->pdev->dev;
+
+ if (pdata->bus_type == V4L2_MBUS_CSI2_LANES && enable) {
+ dev_dbg(dev, "camera: DPHY3=0x%x, DPHY5=0x%x, DPHY6=0x%x\n",
+ pdata->dphy[0], pdata->dphy[1], pdata->dphy[2]);
+ ccic_reg_write(pcdev, REG_CSI2_DPHY3, pdata->dphy[0]);
+ ccic_reg_write(pcdev, REG_CSI2_DPHY6, pdata->dphy[2]);
+ ccic_reg_write(pcdev, REG_CSI2_DPHY5, pdata->dphy[1]);
+ if (pdata->mipi_enabled == 0) {
+ /*
+ * 0x41 actives 1 lane
+ * 0x43 actives 2 lanes
+ */
+ if (pdata->lane == 1)
+ ccic_reg_write(pcdev, REG_CSI2_CTRL0, 0x41);
+ else if (pdata->lane == 2)
+ ccic_reg_write(pcdev, REG_CSI2_CTRL0, 0x43);
+ pdata->mipi_enabled = 1;
+ }
+ } else {
+ ccic_reg_write(pcdev, REG_CSI2_DPHY3, 0x0);
+ ccic_reg_write(pcdev, REG_CSI2_DPHY6, 0x0);
+ ccic_reg_write(pcdev, REG_CSI2_DPHY5, 0x0);
+ ccic_reg_write(pcdev, REG_CSI2_CTRL0, 0x0);
+ pdata->mipi_enabled = 0;
+ }
+}
+
+static void ccic_enable_clk(struct mmp_camera_dev *pcdev)
+{
+ struct mmp_cam_pdata *pdata = pcdev->pdev->dev.platform_data;
+ struct device *dev = &pcdev->pdev->dev;
+ int ctrl1 = 0;
+
+ pdata->enable_clk(&pcdev->pdev->dev, 1);
+ ccic_reg_write(pcdev, REG_CLKCTRL,
+ (pdata->mclk_src << 29) | pdata->mclk_div);
+ dev_dbg(dev, "camera: set sensor mclk = %d MHz\n", pdata->mclk_min);
+
+ switch (pdata->dma_burst) {
+ case 128:
+ ctrl1 |= C1_DMAB128;
+ break;
+ case 256:
+ ctrl1 |= C1_DMAB256;
+ break;
+ }
+ ccic_reg_write(pcdev, REG_CTRL1, ctrl1 | C1_RESERVED | C1_DMAPOSTED);
+ if (pdata->bus_type != V4L2_MBUS_CSI2_LANES)
+ ccic_reg_write(pcdev, REG_CTRL3, 0x4);
+}
+
+static void ccic_disable_clk(struct mmp_camera_dev *pcdev)
+{
+ struct mmp_cam_pdata *pdata = pcdev->pdev->dev.platform_data;
+
+ ccic_reg_write(pcdev, REG_CLKCTRL, 0x0);
+ /*
+ * Bit[5:1] reserved and should not be changed
+ */
+ ccic_reg_write(pcdev, REG_CTRL1, C1_RESERVED);
+ pdata->enable_clk(&pcdev->pdev->dev, 0);
+}
+
+static int ccic_config_image(struct mmp_camera_dev *pcdev)
+{
+ struct v4l2_pix_format *fmt = &pcdev->pix_format;
+ struct device *dev = &pcdev->pdev->dev;
+ struct mmp_cam_pdata *pdata = pcdev->pdev->dev.platform_data;
+ u32 widthy = 0, widthuv = 0, imgsz_h, imgsz_w;
+ int ret = 0;
+
+ dev_dbg(dev, "camera: bytesperline = %d; height = %d\n",
+ fmt->bytesperline, fmt->sizeimage / fmt->bytesperline);
+ imgsz_h = (fmt->height << IMGSZ_V_SHIFT) & IMGSZ_V_MASK;
+ imgsz_w = fmt->bytesperline & IMGSZ_H_MASK;
+
+ if (fmt->pixelformat == V4L2_PIX_FMT_YUV420
+ || fmt->pixelformat == V4L2_PIX_FMT_YVU420)
+ imgsz_w = (fmt->bytesperline * 4 / 3) & IMGSZ_H_MASK;
+ else if (fmt->pixelformat == V4L2_PIX_FMT_JPEG)
+ imgsz_h = (fmt->sizeimage / fmt->bytesperline) << IMGSZ_V_SHIFT;
+
+ switch (fmt->pixelformat) {
+ case V4L2_PIX_FMT_YUYV:
+ case V4L2_PIX_FMT_UYVY:
+ widthy = fmt->width * 2;
+ widthuv = fmt->width * 2;
+ break;
+ case V4L2_PIX_FMT_RGB565:
+ widthy = fmt->width * 2;
+ widthuv = 0;
+ break;
+ case V4L2_PIX_FMT_JPEG:
+ widthy = fmt->bytesperline;
+ widthuv = fmt->bytesperline;
+ break;
+ case V4L2_PIX_FMT_YUV422P:
+ widthy = fmt->width;
+ widthuv = fmt->width / 2;
+ break;
+ case V4L2_PIX_FMT_YUV420:
+ case V4L2_PIX_FMT_YVU420:
+ widthy = fmt->width;
+ widthuv = fmt->width / 2;
+ break;
+ default:
+ break;
+ }
+
+ ccic_reg_write(pcdev, REG_IMGPITCH, widthuv << 16 | widthy);
+ ccic_reg_write(pcdev, REG_IMGSIZE, imgsz_h | imgsz_w);
+ ccic_reg_write(pcdev, REG_IMGOFFSET, 0x0);
+
+ /*
+ * Tell the controller about the image format we are using.
+ */
+ switch (fmt->pixelformat) {
+ case V4L2_PIX_FMT_YUV422P:
+ ccic_reg_write_mask(pcdev, REG_CTRL0,
+ C0_DF_YUV | C0_YUV_PLANAR | C0_YUVE_YVYU, C0_DF_MASK);
+ break;
+ case V4L2_PIX_FMT_YUV420:
+ case V4L2_PIX_FMT_YVU420:
+ ccic_reg_write_mask(pcdev, REG_CTRL0,
+ C0_DF_YUV | C0_YUV_420PL | C0_YUVE_YVYU, C0_DF_MASK);
+ break;
+ case V4L2_PIX_FMT_YUYV:
+ ccic_reg_write_mask(pcdev, REG_CTRL0,
+ C0_DF_YUV | C0_YUV_PACKED | C0_YUVE_UYVY, C0_DF_MASK);
+ break;
+ case V4L2_PIX_FMT_UYVY:
+ ccic_reg_write_mask(pcdev, REG_CTRL0,
+ C0_DF_YUV | C0_YUV_PACKED | C0_YUVE_YUYV, C0_DF_MASK);
+ break;
+ case V4L2_PIX_FMT_JPEG:
+ ccic_reg_write_mask(pcdev, REG_CTRL0,
+ C0_DF_YUV | C0_YUV_PACKED | C0_YUVE_YUYV, C0_DF_MASK);
+ break;
+ case V4L2_PIX_FMT_RGB444:
+ ccic_reg_write_mask(pcdev, REG_CTRL0,
+ C0_DF_RGB | C0_RGBF_444 | C0_RGB4_XRGB, C0_DF_MASK);
+ break;
+ case V4L2_PIX_FMT_RGB565:
+ ccic_reg_write_mask(pcdev, REG_CTRL0,
+ C0_DF_RGB | C0_RGBF_565 | C0_RGB5_BGGR, C0_DF_MASK);
+ break;
+ default:
+ dev_err(dev, "camera: unknown format: %c\n", fmt->pixelformat);
+ break;
+ }
+
+ /*
+ * Make sure it knows we want to use hsync/vsync.
+ */
+ ccic_reg_write_mask(pcdev, REG_CTRL0, C0_SIF_HVSYNC, C0_SIFM_MASK);
+ /*
+ * This field controls the generation of EOF(DVP only)
+ */
+ if (pdata->bus_type != V4L2_MBUS_CSI2_LANES)
+ ccic_reg_set_bit(pcdev, REG_CTRL0,
+ C0_EOF_VSYNC | C0_VEDGE_CTRL);
+
+ return ret;
+}
+
+static void ccic_frameirq_enable(struct mmp_camera_dev *pcdev)
+{
+ ccic_reg_write(pcdev, REG_IRQSTAT, FRAMEIRQS_EOF);
+ ccic_reg_write(pcdev, REG_IRQSTAT, FRAMEIRQS_SOF);
+ ccic_reg_set_bit(pcdev, REG_IRQMASK, FRAMEIRQS_EOF);
+ ccic_reg_set_bit(pcdev, REG_IRQMASK, FRAMEIRQS_SOF);
+}
+
+static void ccic_frameirq_disable(struct mmp_camera_dev *pcdev)
+{
+ ccic_reg_clear_bit(pcdev, REG_IRQMASK, FRAMEIRQS_EOF);
+ ccic_reg_clear_bit(pcdev, REG_IRQMASK, FRAMEIRQS_SOF);
+}
+
+static void ccic_start(struct mmp_camera_dev *pcdev)
+{
+ ccic_reg_set_bit(pcdev, REG_CTRL0, C0_ENABLE);
+}
+
+static void ccic_stop(struct mmp_camera_dev *pcdev)
+{
+ ccic_reg_clear_bit(pcdev, REG_CTRL0, C0_ENABLE);
+}
+
+static void ccic_stop_dma(struct mmp_camera_dev *pcdev)
+{
+ ccic_stop(pcdev);
+ ccic_frameirq_disable(pcdev);
+}
+
+static void ccic_power_up(struct mmp_camera_dev *pcdev)
+{
+ ccic_reg_clear_bit(pcdev, REG_CTRL1, C1_PWRDWN);
+}
+
+static void ccic_power_down(struct mmp_camera_dev *pcdev)
+{
+ ccic_reg_set_bit(pcdev, REG_CTRL1, C1_PWRDWN);
+}
+
+/*
+ * Fetch buffer from list, if single mode, we reserve the last buffer
+ * until new buffer is got, or fetch directly
+ */
+static void mmp_set_contig_buffer(struct mmp_camera_dev *pcdev, int frame)
+{
+ struct mmp_buffer *buf;
+ struct v4l2_pix_format *fmt = &pcdev->pix_format;
+ unsigned long flags = 0;
+
+ spin_lock_irqsave(&pcdev->list_lock, flags);
+ if (list_empty(&pcdev->buffers)) {
+ /*
+ * If there are no available buffers, go into single mode
+ */
+ buf = pcdev->vb_bufs[frame ^ 0x1];
+ set_bit(CF_SINGLE_BUF, &pcdev->flags);
+ pcdev->frame_state.singles++;
+ } else {
+ /*
+ * OK, we have a buffer we can use.
+ */
+ buf = list_first_entry(&pcdev->buffers, struct mmp_buffer,
+ queue);
+ list_del_init(&buf->queue);
+ clear_bit(CF_SINGLE_BUF, &pcdev->flags);
+ }
+
+ pcdev->vb_bufs[frame] = buf;
+ ccic_reg_write(pcdev, REG_Y0BAR + (frame << 2), buf->yuv_p.y);
+ if (fmt->pixelformat == V4L2_PIX_FMT_YUV422P
+ || fmt->pixelformat == V4L2_PIX_FMT_YUV420
+ || fmt->pixelformat == V4L2_PIX_FMT_YVU420) {
+ ccic_reg_write(pcdev, REG_U0BAR + (frame << 2), buf->yuv_p.u);
+ ccic_reg_write(pcdev, REG_V0BAR + (frame << 2), buf->yuv_p.v);
+ }
+ spin_unlock_irqrestore(&pcdev->list_lock, flags);
+}
+
+static void mmp_dma_setup(struct mmp_camera_dev *pcdev)
+{
+ int frame;
+
+ pcdev->nbufs = MAX_DMA_BUFS;
+ for (frame = 0; frame < pcdev->nbufs; frame++)
+ mmp_set_contig_buffer(pcdev, frame);
+
+ /*
+ * CCIC use Two Buffers mode
+ */
+ if (pcdev->nbufs == 2)
+ ccic_reg_set_bit(pcdev, REG_CTRL1, C1_TWOBUFS);
+}
+
+void ccic_ctlr_reset(struct mmp_camera_dev *pcdev)
+{
+ unsigned long val;
+
+ /*
+ * Used CCIC2
+ */
+ if (pcdev->pdev->id) {
+ val = readl(APMU_CCIC2_RST);
+ writel(val & ~0x2, APMU_CCIC2_RST);
+ writel(val | 0x2, APMU_CCIC2_RST);
+ }
+
+ val = readl(APMU_CCIC_RST);
+ writel(val & ~0x2, APMU_CCIC_RST);
+ writel(val | 0x2, APMU_CCIC_RST);
+}
+
+/*
+ * Get everything ready, and start grabbing frames.
+ */
+static int mmp_read_setup(struct mmp_camera_dev *pcdev)
+{
+ ccic_config_phy(pcdev, 1);
+ ccic_frameirq_enable(pcdev);
+ mmp_dma_setup(pcdev);
+ ccic_start(pcdev);
+ pcdev->state = S_STREAMING;
+
+ return 0;
+}
+
+static int mmp_videobuf_setup(struct vb2_queue *vq,
+ const struct v4l2_format *fmt,
+ u32 *count, u32 *num_planes,
+ unsigned int sizes[], void *alloc_ctxs[])
+{
+ struct soc_camera_device *icd = container_of(vq,
+ struct soc_camera_device, vb2_vidq);
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct mmp_camera_dev *pcdev = ici->priv;
+ int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width,
+ icd->current_fmt->host_fmt);
+
+ int minbufs = 2;
+ if (*count < minbufs)
+ *count = minbufs;
+
+ if (bytes_per_line < 0)
+ return bytes_per_line;
+
+ *num_planes = 1;
+ sizes[0] = pcdev->pix_format.sizeimage;
+ alloc_ctxs[0] = pcdev->vb_alloc_ctx;
+ dev_dbg(&pcdev->pdev->dev, "count = %d, size = %u\n", *count, sizes[0]);
+
+ return 0;
+}
+
+static int mmp_videobuf_prepare(struct vb2_buffer *vb)
+{
+ struct soc_camera_device *icd = container_of(vb->vb2_queue,
+ struct soc_camera_device, vb2_vidq);
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct mmp_camera_dev *pcdev = ici->priv;
+ struct mmp_buffer *buf = container_of(vb, struct mmp_buffer, vb_buf);
+ unsigned long size;
+ unsigned long flags = 0;
+ int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width,
+ icd->current_fmt->host_fmt);
+
+ if (bytes_per_line < 0)
+ return bytes_per_line;
+
+ dev_dbg(&pcdev->pdev->dev, "%s; (vb = 0x%p), 0x%p, %lu\n", __func__,
+ vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0));
+ spin_lock_irqsave(&pcdev->list_lock, flags);
+ /*
+ * Added list head initialization on alloc
+ */
+ WARN(!list_empty(&buf->queue), "Buffer %p on queue!\n", vb);
+ spin_unlock_irqrestore(&pcdev->list_lock, flags);
+ BUG_ON(NULL == icd->current_fmt);
+ size = vb2_plane_size(vb, 0);
+ vb2_set_plane_payload(vb, 0, size);
+
+ return 0;
+}
+
+static void mmp_videobuf_queue(struct vb2_buffer *vb)
+{
+ struct soc_camera_device *icd = container_of(vb->vb2_queue,
+ struct soc_camera_device, vb2_vidq);
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct mmp_camera_dev *pcdev = ici->priv;
+ struct mmp_buffer *buf = container_of(vb, struct mmp_buffer, vb_buf);
+ unsigned long flags = 0;
+ int start;
+ dma_addr_t dma_handle;
+ u32 base_size = icd->user_width * icd->user_height;
+
+ mutex_lock(&pcdev->s_mutex);
+ dma_handle = vb2_dma_contig_plane_dma_addr(vb, 0);
+ BUG_ON(!dma_handle);
+ spin_lock_irqsave(&pcdev->list_lock, flags);
+ /*
+ * Wait until two buffers already queued to the list
+ * then start DMA
+ */
+ start = (pcdev->state == S_BUFWAIT) && !list_empty(&pcdev->buffers);
+ spin_unlock_irqrestore(&pcdev->list_lock, flags);
+
+ if (pcdev->pix_format.pixelformat == V4L2_PIX_FMT_YUV422P) {
+ buf->yuv_p.y = dma_handle;
+ buf->yuv_p.u = buf->yuv_p.y + base_size;
+ buf->yuv_p.v = buf->yuv_p.u + base_size / 2;
+ } else if (pcdev->pix_format.pixelformat == V4L2_PIX_FMT_YUV420) {
+ buf->yuv_p.y = dma_handle;
+ buf->yuv_p.u = buf->yuv_p.y + base_size;
+ buf->yuv_p.v = buf->yuv_p.u + base_size / 4;
+ } else if (pcdev->pix_format.pixelformat == V4L2_PIX_FMT_YVU420) {
+ buf->yuv_p.y = dma_handle;
+ buf->yuv_p.v = buf->yuv_p.y + base_size;
+ buf->yuv_p.u = buf->yuv_p.v + base_size / 4;
+ } else {
+ buf->yuv_p.y = dma_handle;
+ }
+
+ spin_lock_irqsave(&pcdev->list_lock, flags);
+ list_add_tail(&buf->queue, &pcdev->buffers);
+ spin_unlock_irqrestore(&pcdev->list_lock, flags);
+
+ if (start)
+ mmp_read_setup(pcdev);
+ mutex_unlock(&pcdev->s_mutex);
+}
+
+static void mmp_videobuf_cleanup(struct vb2_buffer *vb)
+{
+ struct mmp_buffer *buf = container_of(vb, struct mmp_buffer, vb_buf);
+ struct soc_camera_device *icd = container_of(vb->vb2_queue,
+ struct soc_camera_device, vb2_vidq);
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct mmp_camera_dev *pcdev = ici->priv;
+ unsigned long flags = 0;
+
+ spin_lock_irqsave(&pcdev->list_lock, flags);
+ /*
+ * queue list must be initialized before del
+ */
+ if (buf->list_init_flag)
+ list_del_init(&buf->queue);
+ buf->list_init_flag = 0;
+ spin_unlock_irqrestore(&pcdev->list_lock, flags);
+}
+
+/*
+ * only the list that queued could be initialized
+ */
+static int mmp_videobuf_init(struct vb2_buffer *vb)
+{
+ struct mmp_buffer *buf = container_of(vb, struct mmp_buffer, vb_buf);
+ INIT_LIST_HEAD(&buf->queue);
+ buf->list_init_flag = 1;
+
+ return 0;
+}
+
+static int mmp_start_streaming(struct vb2_queue *vq, unsigned int count)
+{
+ struct soc_camera_device *icd = container_of(vq,
+ struct soc_camera_device, vb2_vidq);
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct mmp_camera_dev *pcdev = ici->priv;
+ unsigned long flags = 0;
+ int ret = 0, frame;
+
+ mutex_lock(&pcdev->s_mutex);
+ if (count < 2) {
+ ret = -EINVAL;
+ goto out_unlock;
+ }
+
+ if (pcdev->state != S_IDLE) {
+ ret = -EINVAL;
+ goto out_unlock;
+ }
+
+ /*
+ * Videobuf2 sneakily hoards all the buffers and won't
+ * give them to us until *after* streaming starts. But
+ * we can't actually start streaming until we have a
+ * destination. So go into a wait state and hope they
+ * give us buffers soon.
+ */
+ spin_lock_irqsave(&pcdev->list_lock, flags);
+ if (list_empty(&pcdev->buffers)) {
+ pcdev->state = S_BUFWAIT;
+ spin_unlock_irqrestore(&pcdev->list_lock, flags);
+ ret = 0;
+ goto out_unlock;
+ }
+ spin_unlock_irqrestore(&pcdev->list_lock, flags);
+ ret = mmp_read_setup(pcdev);
+out_unlock:
+ for (frame = 0; frame < pcdev->nbufs; frame++)
+ clear_bit(CF_FRAME_SOF0 + frame, &pcdev->flags);
+ mutex_unlock(&pcdev->s_mutex);
+
+ return ret;
+}
+
+static int mmp_stop_streaming(struct vb2_queue *vq)
+{
+ struct soc_camera_device *icd = container_of(vq,
+ struct soc_camera_device, vb2_vidq);
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct mmp_camera_dev *pcdev = ici->priv;
+ unsigned long flags = 0;
+ int ret = 0;
+
+ mutex_lock(&pcdev->s_mutex);
+ if (pcdev->state == S_BUFWAIT) {
+ /* They never gave us buffers */
+ pcdev->state = S_IDLE;
+ goto out_unlock;
+ }
+
+ if (pcdev->state != S_STREAMING) {
+ ret = -EINVAL;
+ goto out_unlock;
+ }
+
+ ccic_stop_dma(pcdev);
+ pcdev->state = S_IDLE;
+ ccic_ctlr_reset(pcdev);
+
+ spin_lock_irqsave(&pcdev->list_lock, flags);
+ INIT_LIST_HEAD(&pcdev->buffers);
+ spin_unlock_irqrestore(&pcdev->list_lock, flags);
+out_unlock:
+ mutex_unlock(&pcdev->s_mutex);
+
+ return ret;
+}
+
+static struct vb2_ops mmp_videobuf_ops = {
+ .queue_setup = mmp_videobuf_setup,
+ .buf_prepare = mmp_videobuf_prepare,
+ .buf_queue = mmp_videobuf_queue,
+ .buf_cleanup = mmp_videobuf_cleanup,
+ .buf_init = mmp_videobuf_init,
+ .start_streaming = mmp_start_streaming,
+ .stop_streaming = mmp_stop_streaming,
+ .wait_prepare = soc_camera_unlock,
+ .wait_finish = soc_camera_lock,
+};
+
+static int mmp_camera_init_videobuf(struct vb2_queue *q,
+ struct soc_camera_device *icd)
+{
+ q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ q->io_modes = VB2_USERPTR | VB2_MMAP;
+ q->drv_priv = icd;
+ q->ops = &mmp_videobuf_ops;
+ q->mem_ops = &vb2_dma_contig_memops;
+ q->buf_struct_size = sizeof(struct mmp_buffer);
+
+ return vb2_queue_init(q);
+}
+
+/*
+ * Hand a completed buffer back to user space.
+ */
+static void mmp_buffer_done(struct mmp_camera_dev *pcdev,
+ int frame, struct vb2_buffer *vbuf)
+{
+ vbuf->v4l2_buf.bytesused = pcdev->pix_format.sizeimage;
+ vb2_set_plane_payload(vbuf, 0, pcdev->pix_format.sizeimage);
+ vb2_buffer_done(vbuf, VB2_BUF_STATE_DONE);
+}
+
+/*
+ * Interrupt handler stuff
+ */
+static inline void mmp_frame_complete(struct mmp_camera_dev *pcdev, int frame)
+{
+ struct mmp_buffer *buf;
+ unsigned long flags = 0;
+
+ pcdev->frame_state.frames++;
+ /*
+ * "This should never happen"
+ */
+ if (pcdev->state != S_STREAMING)
+ return;
+
+ spin_lock_irqsave(&pcdev->list_lock, flags);
+ buf = pcdev->vb_bufs[frame];
+ if (!test_bit(CF_SINGLE_BUF, &pcdev->flags)) {
+ pcdev->frame_state.delivered++;
+ mmp_buffer_done(pcdev, frame, &buf->vb_buf);
+ }
+ spin_unlock_irqrestore(&pcdev->list_lock, flags);
+ mmp_set_contig_buffer(pcdev, frame);
+}
+
+static irqreturn_t mmp_camera_frameirq(int irq, void *data)
+{
+ struct mmp_camera_dev *pcdev = data;
+ u32 irqs, frame;
+
+ irqs = ccic_reg_read(pcdev, REG_IRQSTAT);
+ if (!(irqs & FRAMEIRQS))
+ return IRQ_NONE;
+
+ /*
+ * Disable camera frame irq
+ */
+ ccic_reg_write(pcdev, REG_IRQSTAT, irqs);
+
+ for (frame = 0; frame < pcdev->nbufs; frame++)
+ if (irqs & (IRQ_SOF0 << frame))
+ set_bit(CF_FRAME_SOF0 + frame, &pcdev->flags);
+
+ for (frame = 0; frame < pcdev->nbufs; frame++)
+ if (irqs & (IRQ_EOF0 << frame) &&
+ test_bit(CF_FRAME_SOF0 + frame, &pcdev->flags)) {
+ mmp_frame_complete(pcdev, frame);
+ clear_bit(CF_FRAME_SOF0 + frame, &pcdev->flags);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int mmp_camera_add_device(struct soc_camera_device *icd)
+{
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct mmp_camera_dev *pcdev = ici->priv;
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ int ret = 0;
+
+ if (pcdev->icd)
+ return -EBUSY;
+
+ pcdev->frame_state.frames = 0;
+ pcdev->frame_state.singles = 0;
+ pcdev->frame_state.delivered = 0;
+
+ pcdev->icd = icd;
+ pcdev->state = S_IDLE;
+ ccic_power_up(pcdev);
+ ccic_enable_clk(pcdev);
+ ccic_stop(pcdev);
+ /*
+ * Mask all interrupts.
+ */
+ ccic_reg_write(pcdev, REG_IRQMASK, 0);
+ ret = v4l2_subdev_call(sd, core, init, 0);
+ /*
+ * When v4l2_subdev_call return -ENOIOCTLCMD,
+ * means No ioctl command
+ */
+ if ((ret < 0) && (ret != -ENOIOCTLCMD) && (ret != -ENODEV)) {
+ dev_info(icd->parent,
+ "camera: Failed to initialize subdev: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void mmp_camera_remove_device(struct soc_camera_device *icd)
+{
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct mmp_camera_dev *pcdev = ici->priv;
+
+ BUG_ON(icd != pcdev->icd);
+
+ dev_err(&pcdev->pdev->dev,
+ "Release %d frames, %d singles, %d delivered\n",
+ pcdev->frame_state.frames, pcdev->frame_state.singles,
+ pcdev->frame_state.delivered);
+ ccic_config_phy(pcdev, 0);
+ ccic_disable_clk(pcdev);
+ ccic_power_down(pcdev);
+ pcdev->icd = NULL;
+}
+
+static int mmp_camera_set_bus_param(struct soc_camera_device *icd)
+{
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct mmp_camera_dev *pcdev = ici->priv;
+ struct device *dev = &pcdev->pdev->dev;
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ struct v4l2_mbus_config cfg;
+ int ret = 0;
+
+ ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg);
+ if (ret < 0) {
+ dev_err(dev, "%s %d\n", __func__, __LINE__);
+ return ret;
+ }
+
+ ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg);
+ if (ret < 0) {
+ dev_err(dev, "%s %d\n", __func__, __LINE__);
+ return ret;
+ }
+
+ return ret;
+}
+
+static int mmp_camera_set_fmt(struct soc_camera_device *icd,
+ struct v4l2_format *f)
+{
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct mmp_camera_dev *pcdev = ici->priv;
+ struct mmp_cam_pdata *pdata = pcdev->pdev->dev.platform_data;
+ struct device *dev = &pcdev->pdev->dev;
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ const struct soc_camera_format_xlate *xlate = NULL;
+ struct v4l2_mbus_framefmt mf;
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ struct v4l2_subdev_frame_interval inter;
+ int ret = 0;
+
+ dev_dbg(dev, "camera: set_fmt: %c, width = %u, height = %u\n",
+ pix->pixelformat, pix->width, pix->height);
+ xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat);
+ if (!xlate) {
+ dev_err(dev, "camera: format: %c not found\n",
+ pix->pixelformat);
+ return -EINVAL;
+ }
+
+ mf.width = pix->width;
+ mf.height = pix->height;
+ mf.field = V4L2_FIELD_NONE;
+ mf.colorspace = pix->colorspace;
+ mf.code = xlate->code;
+
+ ret = v4l2_subdev_call(sd, video, s_mbus_fmt, &mf);
+ if (ret < 0) {
+ dev_err(dev, "camera: set_fmt failed %d\n", __LINE__);
+ return ret;
+ }
+
+ if (mf.code != xlate->code) {
+ dev_err(dev, "camera: wrong code %s %d\n", __func__, __LINE__);
+ return -EINVAL;
+ }
+
+ /*
+ * To get frame_rate
+ */
+ inter.pad = pdata->mclk_min;
+ ret = v4l2_subdev_call(sd, video, g_frame_interval, &inter);
+ if (ret < 0) {
+ dev_err(dev, "camera: Can't get frame rate %s %d\n",
+ __func__, __LINE__);
+ pcdev->frame_rate = 0;
+ } else
+ pcdev->frame_rate =
+ inter.interval.numerator / inter.interval.denominator;
+
+ pix->width = mf.width;
+ pix->height = mf.height;
+ pix->field = mf.field;
+ pix->colorspace = mf.colorspace;
+ pcdev->pix_format.sizeimage = pix->sizeimage;
+ icd->current_fmt = xlate;
+
+ memcpy(&(pcdev->pix_format), pix, sizeof(struct v4l2_pix_format));
+ ret = ccic_config_image(pcdev);
+
+ return ret;
+}
+
+static int mmp_camera_try_fmt(struct soc_camera_device *icd,
+ struct v4l2_format *f)
+{
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct mmp_camera_dev *pcdev = ici->priv;
+ struct device *dev = &pcdev->pdev->dev;
+ const struct soc_camera_format_xlate *xlate;
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ struct v4l2_mbus_framefmt mf;
+ __u32 pixfmt = pix->pixelformat;
+ int ret = 0;
+
+ xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
+ if (!xlate) {
+ dev_err(dev, "camera: format: %c not found\n",
+ pix->pixelformat);
+ return -EINVAL;
+ }
+
+ pix->bytesperline = soc_mbus_bytes_per_line(pix->width,
+ xlate->host_fmt);
+ if (pix->bytesperline < 0)
+ return pix->bytesperline;
+ if (pix->pixelformat == V4L2_PIX_FMT_JPEG) {
+ /*
+ * Todo: soc_camera_try_fmt could clear
+ * sizeimage, we can't get the value from
+ * userspace, just hard coding
+ */
+ pix->bytesperline = 2048;
+ } else
+ pix->sizeimage = pix->height * pix->bytesperline;
+
+ /*
+ * limit to sensor capabilities
+ */
+ mf.width = pix->width;
+ mf.height = pix->height;
+ mf.field = V4L2_FIELD_NONE;
+ mf.colorspace = pix->colorspace;
+ mf.code = xlate->code;
+
+ ret = v4l2_subdev_call(sd, video, try_mbus_fmt, &mf);
+ if (ret < 0)
+ return ret;
+
+ pix->width = mf.width;
+ pix->height = mf.height;
+ pix->colorspace = mf.colorspace;
+
+ switch (mf.field) {
+ case V4L2_FIELD_ANY:
+ case V4L2_FIELD_NONE:
+ pix->field = V4L2_FIELD_NONE;
+ break;
+ default:
+ dev_err(dev, "camera: Field type %d unsupported.\n", mf.field);
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static unsigned int mmp_camera_poll(struct file *file, poll_table *pt)
+{
+ struct soc_camera_device *icd = file->private_data;
+
+ return vb2_poll(&icd->vb2_vidq, file, pt);
+}
+
+static int mmp_camera_querycap(struct soc_camera_host *ici,
+ struct v4l2_capability *cap)
+{
+ struct v4l2_dbg_chip_ident id;
+ struct mmp_camera_dev *pcdev = ici->priv;
+ struct soc_camera_device *icd = pcdev->icd;
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ struct device *dev = &pcdev->pdev->dev;
+ struct mmp_cam_pdata *pdata = pcdev->pdev->dev.platform_data;
+ int ret = 0;
+
+ cap->version = KERNEL_VERSION(0, 0, 5);
+ cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
+ ret = v4l2_subdev_call(sd, core, g_chip_ident, &id);
+ if (ret < 0) {
+ dev_err(dev, "%s %d\n", __func__, __LINE__);
+ return ret;
+ }
+
+ strcpy(cap->card, pdata->name);
+ strcpy(cap->driver, (const char *)id.ident);
+
+ return 0;
+}
+
+static int mmp_camera_set_parm(struct soc_camera_device *icd,
+ struct v4l2_streamparm *para)
+{
+ return 0;
+}
+
+static int mmp_camera_get_formats(struct soc_camera_device *icd, u32 idx,
+ struct soc_camera_format_xlate *xlate)
+{
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct mmp_camera_dev *pcdev = ici->priv;
+ struct device *dev = &pcdev->pdev->dev;
+ enum v4l2_mbus_pixelcode code;
+ const struct soc_mbus_pixelfmt *fmt;
+ int formats = 0, ret = 0, i;
+
+ ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code);
+ if (ret < 0)
+ /*
+ * No more formats
+ */
+ return 0;
+
+ fmt = soc_mbus_get_fmtdesc(code);
+ if (!fmt) {
+ dev_err(dev, "camera: Invalid format #%u: %d\n", idx, code);
+ return 0;
+ }
+
+ switch (code) {
+ /*
+ * Refer to mbus_fmt struct
+ */
+ case V4L2_MBUS_FMT_UYVY8_2X8:
+ /*
+ * Add support for YUV420 and YUV422P
+ */
+ formats = ARRAY_SIZE(ccic_formats);
+ if (xlate) {
+ for (i = 0; i < ARRAY_SIZE(ccic_formats); i++) {
+ xlate->host_fmt = &ccic_formats[i];
+ xlate->code = code;
+ xlate++;
+ }
+ }
+ return formats;
+ case V4L2_MBUS_FMT_JPEG_1X8:
+ if (xlate)
+ dev_err(dev, "camera: Providing format: %s\n",
+ fmt->name);
+ break;
+ default:
+ /*
+ * camera controller can not support
+ * this format, which might supported by the sensor
+ */
+ dev_warn(dev, "camera: Not support fmt: %s\n", fmt->name);
+ return 0;
+ }
+
+ formats++;
+ if (xlate) {
+ xlate->host_fmt = fmt;
+ xlate->code = code;
+ xlate++;
+ }
+
+ return formats;
+}
+
+static struct soc_camera_host_ops mmp_soc_camera_host_ops = {
+ .owner = THIS_MODULE,
+ .add = mmp_camera_add_device,
+ .remove = mmp_camera_remove_device,
+ .set_fmt = mmp_camera_set_fmt,
+ .try_fmt = mmp_camera_try_fmt,
+ .set_parm = mmp_camera_set_parm,
+ .init_videobuf2 = mmp_camera_init_videobuf,
+ .poll = mmp_camera_poll,
+ .querycap = mmp_camera_querycap,
+ .set_bus_param = mmp_camera_set_bus_param,
+ .get_formats = mmp_camera_get_formats,
+};
+
+static int __devinit mmp_camera_probe(struct platform_device *pdev)
+{
+ struct mmp_camera_dev *pcdev;
+ struct mmp_cam_pdata *pdata;
+ struct resource *res;
+ void __iomem *base;
+ int irq;
+ int err = 0;
+
+ pdata = pdev->dev.platform_data;
+ if (!pdata || !pdata->init_clk || !pdata->enable_clk)
+ return -EINVAL;
+
+ dev_info(&pdev->dev, "camera: probing CCIC%d\n", pdev->id + 1);
+
+ pcdev = devm_kzalloc(&pdev->dev, sizeof(*pcdev), GFP_KERNEL);
+ if (!pcdev) {
+ dev_err(&pdev->dev, "camera: Could not allocate pcdev\n");
+ return -ENOMEM;
+ }
+
+ pcdev->pdev = pdev;
+
+ err = pdata->init_clk(&pdev->dev, 1);
+ if (err)
+ goto exit_clk;
+
+ INIT_LIST_HEAD(&pcdev->buffers);
+
+ spin_lock_init(&pcdev->list_lock);
+ mutex_init(&pcdev->s_mutex);
+
+ /*
+ * Request the regions and ioremap
+ */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ base = devm_request_and_ioremap(&pdev->dev, res);
+ if (!base) {
+ dev_err(&pdev->dev,
+ "camera: Failed to request and remap io memory\n");
+ return -ENXIO;
+ }
+
+ pcdev->res = res;
+ pcdev->base = base;
+
+ /*
+ * Request irq
+ */
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(&pdev->dev, "camera: Failed to get irq resource\n");
+ return -ENXIO;
+ }
+
+ pcdev->irq = irq;
+ err = devm_request_irq(&pdev->dev, pcdev->irq, mmp_camera_frameirq,
+ IRQF_SHARED, MMP_CAM_DRV_NAME, pcdev);
+ if (err) {
+ dev_err(&pdev->dev, "camera: Interrupt request failed\n");
+ goto exit_clk;
+ }
+
+ ccic_enable_clk(pcdev);
+ pcdev->soc_host.drv_name = MMP_CAM_DRV_NAME;
+ pcdev->soc_host.ops = &mmp_soc_camera_host_ops;
+ pcdev->soc_host.priv = pcdev;
+ pcdev->soc_host.v4l2_dev.dev = &pdev->dev;
+ pcdev->soc_host.nr = pdev->id;
+ pcdev->vb_alloc_ctx = (struct vb2_alloc_ctx *)
+ vb2_dma_contig_init_ctx(&pdev->dev);
+ if (IS_ERR(pcdev->vb_alloc_ctx)) {
+ err = PTR_ERR(pcdev->vb_alloc_ctx);
+ goto exit_clk;
+ }
+
+ err = soc_camera_host_register(&pcdev->soc_host);
+ if (err)
+ goto exit_free_ctx;
+
+ return 0;
+
+exit_free_ctx:
+ vb2_dma_contig_cleanup_ctx(pcdev->vb_alloc_ctx);
+exit_clk:
+ pdata->init_clk(&pdev->dev, 0);
+
+ return err;
+}
+
+static int __devexit mmp_camera_remove(struct platform_device *pdev)
+{
+
+ struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev);
+ struct mmp_camera_dev *pcdev = container_of(soc_host,
+ struct mmp_camera_dev, soc_host);
+ struct mmp_cam_pdata *pdata = pcdev->pdev->dev.platform_data;
+
+ pdata->init_clk(&pdev->dev, 0);
+ ccic_power_down(pcdev);
+ soc_camera_host_unregister(soc_host);
+ vb2_dma_contig_cleanup_ctx(pcdev->vb_alloc_ctx);
+ pcdev->vb_alloc_ctx = NULL;
+ dev_info(&pdev->dev, "camera: MMP Camera driver unloaded\n");
+
+ return 0;
+}
+
+static struct platform_driver mmp_camera_driver = {
+ .driver = {
+ .name = MMP_CAM_DRV_NAME,
+ },
+ .probe = mmp_camera_probe,
+ .remove = __devexit_p(mmp_camera_remove),
+};
+
+module_platform_driver(mmp_camera_driver);
+
+MODULE_DESCRIPTION("Marvell MMP CMOS Camera Interface Controller driver");
+MODULE_AUTHOR("Kassey Lee <ygli@xxxxxxxxxxx>");
+MODULE_AUTHOR("Angela Wan <jwan@xxxxxxxxxxx>");
+MODULE_AUTHOR("Albert Wang <twang13@xxxxxxxxxxx>");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("Video");
+
diff --git a/drivers/media/video/mmp_camera.h b/drivers/media/video/mmp_camera.h
new file mode 100644
index 0000000..106892a
--- /dev/null
+++ b/drivers/media/video/mmp_camera.h
@@ -0,0 +1,241 @@
+/*
+ * Register definitions for the m88alp01 camera interface.
+ * Offsets in bytes as given in the spec.
+ *
+ * Copyright 2006 One Laptop Per Child Association, Inc.
+ * Written by Jonathan Corbet <corbet@xxxxxxx>
+ *
+ * Copyright (C) 2011-2012, Marvell International Ltd.
+ * Modified by Kassey Lee <ygli@xxxxxxxxxxx>
+ * Albert Wang <twang13@xxxxxxxxxxx>
+ *
+ * This file may be distributed under the terms of the GNU General
+ * Public License, version 2.
+ */
+#ifndef __MMP_CAMERA_H
+#define __MMP_CAMERA_H
+
+/*
+ * Y.U.V. reg define
+ */
+#define REG_Y0BAR 0x00
+#define REG_Y1BAR 0x04
+#define REG_Y2BAR 0x08
+#define REG_U0BAR 0x0c
+#define REG_U1BAR 0x10
+#define REG_U2BAR 0x14
+#define REG_V0BAR 0x18
+#define REG_V1BAR 0x1C
+#define REG_V2BAR 0x20
+
+/*
+ * MIPI enable
+ */
+#define REG_CSI2_CTRL0 0x100
+#define REG_CSI2_DPHY3 0x12c
+#define REG_CSI2_DPHY5 0x134
+#define REG_CSI2_DPHY6 0x138
+
+#define REG_IMGPITCH 0x24 /* Image pitch register */
+#define IMGP_YP_SHFT 2 /* Y pitch params */
+#define IMGP_YP_MASK 0x00003ffc /* Y pitch field */
+#define IMGP_UVP_SHFT 18 /* UV pitch (planar) */
+#define IMGP_UVP_MASK 0x3ffc0000
+
+#define REG_IRQSTATRAW 0x28 /* RAW IRQ Status */
+
+#define REG_IRQMASK 0x2c /* IRQ mask - same bits as IRQSTAT */
+
+#define REG_IRQSTAT 0x30 /* IRQ status / clear */
+#define IRQ_EOF0 0x00000001 /* End of frame 0 */
+#define IRQ_EOF1 0x00000002 /* End of frame 1 */
+#define IRQ_EOF2 0x00000004 /* End of frame 2 */
+#define IRQ_SOF0 0x00000008 /* Start of frame 0 */
+#define IRQ_SOF1 0x00000010 /* Start of frame 1 */
+#define IRQ_SOF2 0x00000020 /* Start of frame 2 */
+#define IRQ_OVERFLOW 0x00000040 /* FIFO overflow */
+#define FRAMEIRQS_EOF (IRQ_EOF0 | IRQ_EOF1 | IRQ_EOF2)
+#define FRAMEIRQS_SOF (IRQ_SOF0 | IRQ_SOF1 | IRQ_SOF2)
+#define FRAMEIRQS (IRQ_EOF0 | IRQ_EOF1 | IRQ_EOF2 | \
+ IRQ_SOF0 | IRQ_SOF1 | IRQ_SOF2)
+#define ALLIRQS (FRAMEIRQS | IRQ_OVERFLOW)
+
+#define REG_IMGSIZE 0x34 /* Image size */
+#define IMGSZ_V_MASK 0x1fff0000
+#define IMGSZ_V_SHIFT 16
+#define IMGSZ_H_MASK 0x00003fff
+
+#define REG_IMGOFFSET 0x38 /* IMage offset */
+
+#define REG_CTRL0 0x3c /* Control 0 */
+#define C0_ENABLE 0x00000001 /* Makes the whole thing go */
+/* Mask for all the format bits */
+#define C0_DF_MASK 0x00fffffc /* Bits 2-23 */
+/* RGB ordering */
+#define C0_RGB4_RGBX 0x00000000
+#define C0_RGB4_XRGB 0x00000004
+#define C0_RGB4_BGRX 0x00000008
+#define C0_RGB4_XBGR 0x0000000c
+#define C0_RGB5_RGGB 0x00000000
+#define C0_RGB5_GRBG 0x00000004
+#define C0_RGB5_GBRG 0x00000008
+#define C0_RGB5_BGGR 0x0000000c
+/* Spec has two fields for DIN and DOUT, but they must match, so
+ combine them here. */
+#define C0_DF_YUV 0x00000000 /* Data is YUV */
+#define C0_DF_RGB 0x000000a0 /* Data is RGB */
+#define C0_DF_BAYER 0x00000140 /* Data is Bayer */
+/* 8-8-8 must be missing from the below - ask */
+#define C0_RGBF_565 0x00000000
+#define C0_RGBF_444 0x00000800
+#define C0_RGB_BGR 0x00001000 /* Blue comes first */
+#define C0_YUV_PLANAR 0x00000000 /* YUV 422 planar format */
+#define C0_YUV_PACKED 0x00008000 /* YUV 422 packed format */
+#define C0_YUV_420PL 0x0000a000 /* YUV 420 planar format */
+/* Think that 420 packed must be 111 - ask */
+#define C0_YUVE_YUYV 0x00000000 /* Y1CbY0Cr */
+#define C0_YUVE_YVYU 0x00010000 /* Y1CrY0Cb */
+#define C0_YUVE_VYUY 0x00020000 /* CrY1CbY0 */
+#define C0_YUVE_UYVY 0x00030000 /* CbY1CrY0 */
+#define C0_YUVE_XYUV 0x00000000 /* 420: .YUV */
+#define C0_YUVE_XYVU 0x00010000 /* 420: .YVU */
+#define C0_YUVE_XUVY 0x00020000 /* 420: .UVY */
+#define C0_YUVE_XVUY 0x00030000 /* 420: .VUY */
+/* Bayer bits 18,19 if needed */
+#define C0_HPOL_LOW 0x01000000 /* HSYNC polarity active low */
+#define C0_VPOL_LOW 0x02000000 /* VSYNC polarity active low */
+#define C0_VCLK_LOW 0x04000000 /* VCLK on falling edge */
+#define C0_DOWNSCALE 0x08000000 /* Enable downscaler */
+#define C0_SIFM_MASK 0xc0000000 /* SIF mode bits */
+#define C0_SIF_HVSYNC 0x00000000 /* Use H/VSYNC */
+#define C0_SOF_NOSYNC 0x40000000 /* Use inband active signaling */
+#define C0_EOF_VSYNC 0x00400000 /* Generate EOF by VSYNC */
+#define C0_VEDGE_CTRL 0x00800000 /* Detecting falling edge of VSYNC */
+
+#define REG_CTRL1 0x40 /* Control 1 */
+#define C1_RESERVED 0x0000003c /* Reserved and shouldn't be changed */
+#define C1_444ALPHA 0x00f00000 /* Alpha field in RGB444 */
+#define C1_ALPHA_SHFT 20
+#define C1_DMAB64 0x00000000 /* 64-byte DMA burst */
+#define C1_DMAB128 0x02000000 /* 128-byte DMA burst */
+#define C1_DMAB256 0x04000000 /* 256-byte DMA burst */
+#define C1_DMAB_MASK 0x06000000
+#define C1_TWOBUFS 0x08000000 /* Use only two DMA buffers */
+#define C1_PWRDWN 0x10000000 /* Power down */
+#define C1_DMAPOSTED 0x40000000 /* DMA Posted Select */
+
+#define REG_CTRL3 0x1ec /* CCIC parallel mode */
+
+#define REG_LNNUM 0x60 /* Lines num DMA filled */
+
+#define REG_CLKCTRL 0x88 /* Clock control */
+#define CLK_DIV_MASK 0x0000ffff /* Upper bits RW "reserved" */
+
+/*
+ * Indicate flags for CCIC frame buffer state
+ * 0 - No available buffer, will enter signle buffer mode
+ * 1:3 - Normal mode, indicate which frame buffer is used in CCIC
+ */
+#define CF_SINGLE_BUF 0
+#define CF_FRAME_SOF0 1
+
+/*
+ * CCIC can support at most 3 frame buffers
+ * 2 - Use Two Buffers mode
+ * 3 - Use Three Buffers mode
+ */
+#define MAX_DMA_BUFS 2
+
+/*
+ * Basic frame states
+ */
+struct mmp_frame_state {
+ int frames;
+ int singles;
+ int delivered;
+};
+
+struct yuv_pointer_t {
+ dma_addr_t y;
+ dma_addr_t u;
+ dma_addr_t v;
+};
+
+/*
+ * buffer for one video frame
+ */
+struct mmp_buffer {
+ /*
+ * common v4l buffer stuff -- must be first
+ */
+ struct vb2_buffer vb_buf;
+ struct yuv_pointer_t yuv_p;
+ struct list_head queue;
+ struct page *page;
+ size_t bsize;
+ int list_init_flag;
+};
+
+enum mmp_camera_state {
+ S_IDLE, /* Just hanging around */
+ S_STREAMING, /* Streaming data */
+ S_BUFWAIT /* streaming requested but no buffers yet */
+};
+
+struct mmp_camera_dev {
+ struct soc_camera_host soc_host;
+ struct soc_camera_device *icd;
+ unsigned int irq;
+ void __iomem *base;
+ struct platform_device *pdev;
+ struct resource *res;
+ struct list_head buffers; /* Available frames */
+ spinlock_t list_lock;
+ struct mutex s_mutex; /* Access to this structure */
+ struct v4l2_pix_format pix_format;
+ unsigned long flags; /* Indicate frame buffer state */
+ struct mmp_frame_state frame_state;
+ enum mmp_camera_state state;
+ struct mmp_buffer *vb_bufs[MAX_DMA_BUFS];
+ unsigned int nbufs; /* How many bufs are used for ccic */
+ struct vb2_alloc_ctx *vb_alloc_ctx;
+ int frame_rate;
+};
+
+/*
+ * Device register I/O
+ */
+static inline u32 ccic_reg_read(struct mmp_camera_dev *pcdev, unsigned int reg)
+{
+ return ioread32(pcdev->base + reg);
+}
+
+static inline void ccic_reg_write(struct mmp_camera_dev *pcdev,
+ unsigned int reg, u32 val)
+{
+ iowrite32(val, pcdev->base + reg);
+}
+
+static inline void ccic_reg_write_mask(struct mmp_camera_dev *pcdev,
+ unsigned int reg, u32 val, u32 mask)
+{
+ u32 v = ccic_reg_read(pcdev, reg);
+
+ v = (v & ~mask) | (val & mask);
+ ccic_reg_write(pcdev, reg, v);
+}
+
+static inline void ccic_reg_set_bit(struct mmp_camera_dev *pcdev,
+ unsigned int reg, u32 val)
+{
+ ccic_reg_write_mask(pcdev, reg, val, val);
+}
+
+static inline void ccic_reg_clear_bit(struct mmp_camera_dev *pcdev,
+ unsigned int reg, u32 val)
+{
+ ccic_reg_write_mask(pcdev, reg, 0, val);
+}
+
+#endif
+
--
1.7.0.4
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