Add post processor ops for IELCD and their support functions.
Expose an interface for the FIMD to register IELCD PP.
Signed-off-by: Ajay Kumar <ajaykumar.rs@xxxxxxxxxxx>
Signed-off-by: Shirish S <s.shirish@xxxxxxxxxxx>
Signed-off-by: Rahul Sharma <rahul.sharma@xxxxxxxxxxx>
---
drivers/gpu/drm/exynos/Makefile | 3 +-
drivers/gpu/drm/exynos/exynos_ielcd.c | 295 ++++++++++++++++++++++++++++++++++
include/video/samsung_fimd.h | 43 +++++
3 files changed, 340 insertions(+), 1 deletion(-)
create mode 100644 drivers/gpu/drm/exynos/exynos_ielcd.c
diff --git a/drivers/gpu/drm/exynos/Makefile b/drivers/gpu/drm/exynos/Makefile
index 653eab5..f3d7314 100644
--- a/drivers/gpu/drm/exynos/Makefile
+++ b/drivers/gpu/drm/exynos/Makefile
@@ -10,7 +10,8 @@ exynosdrm-y := exynos_drm_drv.o exynos_drm_encoder.o \
exynosdrm-$(CONFIG_DRM_EXYNOS_IOMMU) += exynos_drm_iommu.o
exynosdrm-$(CONFIG_DRM_EXYNOS_DMABUF) += exynos_drm_dmabuf.o
-exynosdrm-$(CONFIG_DRM_EXYNOS_FIMD) += exynos_drm_fimd.o exynos_mdnie.o
+exynosdrm-$(CONFIG_DRM_EXYNOS_FIMD) += exynos_drm_fimd.o exynos_mdnie.o \
+ exynos_ielcd.o
exynosdrm-$(CONFIG_DRM_EXYNOS_DSI) += exynos_drm_dsi.o
exynosdrm-$(CONFIG_DRM_EXYNOS_DP) += exynos_dp_core.o exynos_dp_reg.o
exynosdrm-$(CONFIG_DRM_EXYNOS_HDMI) += exynos_hdmi.o exynos_mixer.o
diff --git a/drivers/gpu/drm/exynos/exynos_ielcd.c b/drivers/gpu/drm/exynos/exynos_ielcd.c
new file mode 100644
index 0000000..33d0d34
--- /dev/null
+++ b/drivers/gpu/drm/exynos/exynos_ielcd.c
@@ -0,0 +1,295 @@
+/* drivers/gpu/drm/exynos/exynos_ielcd.c
+ *
+ * Samsung IELCD driver
+ *
+ * Copyright (C) 2014 Samsung Electronics Co., Ltd.
+ *
+ * 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/errno.h>
+#include <linux/of_device.h>
+#include <linux/delay.h>
+
+#include <video/samsung_fimd.h>
+
+#include <drm/drmP.h>
+
+#include "exynos_drm_drv.h"
+#include "exynos_fimd_pp.h"
+
+#define exynos_ielcd_readl(addr) readl(ielcd->exynos_ielcd_base + addr)
+#define exynos_ielcd_writel(addr, val) \
+ writel(val, ielcd->exynos_ielcd_base + addr)
+#define IELCD_TIMEOUT_CNT 1000
+
+struct ielcd_context {
+ void __iomem *exynos_ielcd_base;
+ unsigned vdisplay;
+ unsigned vsync_len;
+ unsigned vbpd;
+ unsigned vfpd;
+ unsigned hdisplay;
+ unsigned hsync_len;
+ unsigned hbpd;
+ unsigned hfpd;
+ unsigned vidcon0;
+ unsigned vidcon1;
+};
+
+static int ielcd_logic_start(struct ielcd_context *ielcd)
+{
+ exynos_ielcd_writel(IELCD_AUXCON, IELCD_MAGIC_KEY);
+
+ return 0;
+}
+
+static void ielcd_set_polarity(struct ielcd_context *ielcd)
+{
+ unsigned int cfg;
+
+ cfg = exynos_ielcd_readl(IELCD_VIDCON1);
+
+ cfg &= ~(VIDCON1_INV_VCLK | VIDCON1_INV_HSYNC
+ | VIDCON1_INV_VSYNC | VIDCON1_INV_VDEN);
+ cfg |= ielcd->vidcon1;
+ exynos_ielcd_writel(IELCD_VIDCON1, cfg);
+}
+
+static void ielcd_set_timing(struct ielcd_context *ielcd)
+{
+ unsigned int cfg;
+
+ /*LCD verical porch setting*/
+ cfg = VIDTCON0_VBPD(ielcd->vbpd - 1) |
+ VIDTCON0_VFPD(ielcd->vfpd - 1) |
+ VIDTCON0_VSPW(ielcd->vsync_len - 1);
+
+ exynos_ielcd_writel(IELCD_VIDTCON0, cfg);
+ /*LCD horizontal porch setting*/
+ cfg = VIDTCON1_HBPD(ielcd->hbpd - 1) |
+ VIDTCON1_HFPD(ielcd->hfpd - 1) |
+ VIDTCON1_HSPW(ielcd->hsync_len - 1);
+
+ exynos_ielcd_writel(IELCD_VIDTCON1, cfg);
+}
+
+static void ielcd_set_lcd_size(struct ielcd_context *ielcd)
+{
+ unsigned int cfg;
+
+ cfg = (IELCD_VIDTCON2_LINEVAL(ielcd->vdisplay - 1) |
+ IELCD_VIDTCON2_HOZVAL(ielcd->hdisplay - 1));
+ exynos_ielcd_writel(IELCD_VIDTCON2, cfg);
+
+ /* window0 position setting */
+ exynos_ielcd_writel(IELCD_VIDOSD0A, 0);
+ cfg = (IELCD_VIDOSDB_XPOS_END(ielcd->hdisplay - 1)) |
+ (IELCD_VIDOSDB_YPOS_END(ielcd->vdisplay - 1));
+ exynos_ielcd_writel(IELCD_VIDOSD0B, cfg);
+
+ /* window0 osd size setting */
+ exynos_ielcd_writel(IELCD_VIDOSD0C, ielcd->hdisplay *
+ ielcd->vdisplay);
+
+ /* window0 page size(bytes) */
+ exynos_ielcd_writel(IELCD_VIDW00ADD2, ielcd->hdisplay * 4);
+}
+
+static int exynos_ielcd_hw_trigger_check(struct ielcd_context *ielcd)
+{
+ unsigned int cfg;
+ unsigned int count = 0;
+
+ cfg = exynos_ielcd_readl(IELCD_TRIGCON);
+ cfg &= ~(SWTRGCMD_W0BUF | TRGMODE_W0BUF);
+ cfg |= (SWTRGCMD_W0BUF | TRGMODE_W0BUF);
+ exynos_ielcd_writel(IELCD_TRIGCON, cfg);
+
+ do {
+ cfg = exynos_ielcd_readl(IELCD_SHADOWCON);
+ cfg |= IELCD_W0_SW_SHADOW_UPTRIG;
+ exynos_ielcd_writel(IELCD_SHADOWCON, cfg);
+
+ cfg = exynos_ielcd_readl(IELCD_VIDCON0);
+ cfg |= IELCD_SW_SHADOW_UPTRIG;
+ exynos_ielcd_writel(IELCD_VIDCON0, cfg);
+
+ count++;
+ if (count > IELCD_TIMEOUT_CNT) {
+ DRM_ERROR("ielcd start fail\n");
+ return -EBUSY;
+ }
+ udelay(10);
+ } while (exynos_ielcd_readl(IELCD_WINCON0) & IELCD_TRGSTATUS);
+
+ return 0;
+}
+
+static int exynos_ielcd_display_on(struct ielcd_context *ielcd)
+{
+ unsigned int cfg;
+
+ cfg = exynos_ielcd_readl(IELCD_VIDCON0);
+ cfg |= (VIDCON0_ENVID | VIDCON0_ENVID_F);
+ exynos_ielcd_writel(IELCD_VIDCON0, cfg);
+
+ return exynos_ielcd_hw_trigger_check(ielcd);
+}
+
+int exynos_ielcd_display_off(void *pp_ctx)
+{
+ struct ielcd_context *ielcd = pp_ctx;
+ unsigned int cfg, ielcd_count = 0;
+ int ret = 0;
+
+ cfg = exynos_ielcd_readl(IELCD_VIDCON0);
+ cfg &= ~(VIDCON0_ENVID | VIDCON0_ENVID_F);
+
+ exynos_ielcd_writel(IELCD_VIDCON0, cfg);
+
+ do {
+ if (++ielcd_count > IELCD_TIMEOUT_CNT) {
+ DRM_ERROR("ielcd off TIMEDOUT\n");
+ ret = -ETIMEDOUT;
+ break;
+ }
+
+ if (!(exynos_ielcd_readl(IELCD_VIDCON1) &
+ VIDCON1_LINECNT_MASK)) {
+ ret = 0;
+ break;
+ }
+ udelay(200);
+ } while (1);
+
+ return ret;
+}
+
+static void exynos_ielcd_config_rgb(struct ielcd_context *ielcd)
+{
+ unsigned int cfg;
+
+ cfg = exynos_ielcd_readl(IELCD_VIDCON0);
+ cfg &= ~(VIDCON0_VIDOUT_MASK | VIDCON0_VCLK_MASK);
+ cfg |= VIDCON0_VIDOUT_RGB;
+ cfg |= VIDCON0_VCLK_NORMAL;
+
+ exynos_ielcd_writel(IELCD_VIDCON0, cfg);
+}
+
+int exynos_ielcd_power_on(void *pp_ctx)
+{
+ struct ielcd_context *ielcd = pp_ctx;
+ unsigned int cfg;
+ int ret = 0;
+
+ ielcd_logic_start(ielcd);
+ ielcd_set_polarity(ielcd);
+
+ ielcd_set_lcd_size(ielcd);
+ ielcd_set_timing(ielcd);
+
+ /* window0 setting , fixed */
+ cfg = WINCONx_ENLOCAL | WINCON0_BPPMODE_24BPP_888 | WINCONx_ENWIN;
+ exynos_ielcd_writel(IELCD_WINCON0, cfg);
+
+ exynos_ielcd_config_rgb(ielcd);
+
+ ret = exynos_ielcd_display_on(ielcd);
+ if (ret) {
+ DRM_ERROR("IELCD failed to start\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static void exynos_ielcd_mode_set(void *pp_ctx,
+ const struct drm_display_mode *in_mode)
+{
+ struct ielcd_context *ielcd = pp_ctx;
+
+ ielcd->vdisplay = in_mode->crtc_vdisplay;
+ ielcd->vsync_len = in_mode->crtc_vsync_end - in_mode->crtc_vsync_start;
+ ielcd->vbpd = in_mode->crtc_vtotal - in_mode->crtc_vsync_end;
+ ielcd->vfpd = in_mode->crtc_vsync_start - in_mode->crtc_vdisplay;
+
+ ielcd->hdisplay = in_mode->crtc_hdisplay;
+ ielcd->hsync_len = in_mode->crtc_hsync_end - in_mode->crtc_hsync_start;
+ ielcd->hbpd = in_mode->crtc_htotal - in_mode->crtc_hsync_end;
+ ielcd->hfpd = in_mode->crtc_hsync_start - in_mode->crtc_hdisplay;
+}
+
+static struct exynos_fimd_pp_ops ielcd_ops = {
+ .power_on = exynos_ielcd_power_on,
+ .power_off = exynos_ielcd_display_off,
+ .mode_set = exynos_ielcd_mode_set,
+};
+
+static struct exynos_fimd_pp ielcd_pp = {
+ .ops = &ielcd_ops,
+};
+
+int exynos_ielcd_init(struct device *dev, struct exynos_fimd_pp **pp)
+{
+ struct device_node *ielcd_np;
+ struct ielcd_context *ielcd;
+ u32 addr[2];
+ int ret = 0;
+
+ ielcd = kzalloc(sizeof(struct ielcd_context), GFP_KERNEL);
+ if (!ielcd) {
+ DRM_ERROR("failed to allocate ielcd\n");
+ ret = -ENOMEM;
+ goto error0;
+ }
+
+ ielcd_np = of_parse_phandle(dev->of_node, "samsung,ielcd", 0);
+ if (!ielcd_np) {
+ DRM_ERROR("No ielcd node present, "
+ "MDNIE feature will be disabled\n");
+ ret = -ENODEV;
+ goto error1;
+ }
+
+ if (of_property_read_u32_array(ielcd_np, "reg", addr, 2)) {
+ DRM_ERROR("failed to get base address for IELCD\n");
+ ret = -ENOMEM;
+ goto error1;
+ }
+
+ ielcd->exynos_ielcd_base = ioremap(addr[0], addr[1]);
+ if (!ielcd->exynos_ielcd_base) {
+ DRM_ERROR("failed to ioremap ielcd device\n");
+ ret = -ENOMEM;
+ goto error1;
+ }
+
+ if (of_get_property(dev->of_node, "samsung,fimd-vidout-rgb", NULL))
+ ielcd->vidcon0 |= VIDCON0_VIDOUT_RGB | VIDCON0_PNRMODE_RGB;
+ if (of_get_property(dev->of_node, "samsung,fimd-inv-hsync", NULL))
+ ielcd->vidcon1 |= VIDCON1_INV_HSYNC;
+ if (of_get_property(dev->of_node, "samsung,fimd-inv-vsync", NULL))
+ ielcd->vidcon1 |= VIDCON1_INV_VSYNC;
+ if (of_get_property(dev->of_node, "samsung,fimd-inv-vclk", NULL))
+ ielcd->vidcon1 |= VIDCON1_INV_VCLK;
+ if (of_get_property(dev->of_node, "samsung,fimd-inv-vden", NULL))
+ ielcd->vidcon1 |= VIDCON1_INV_VDEN;
+
+ ielcd_pp.ctx = ielcd;
+
+ *pp = &ielcd_pp;
+
+ DRM_INFO("IELCD initialzation done\n");
+
+ return 0;
+error1:
+ kfree(ielcd);
+error0:
+ return ret;
+}
+EXPORT_SYMBOL(exynos_ielcd_init);
diff --git a/include/video/samsung_fimd.h b/include/video/samsung_fimd.h
index 3ff7cad..cc64757 100644
--- a/include/video/samsung_fimd.h
+++ b/include/video/samsung_fimd.h
@@ -60,7 +60,9 @@
#define VIDCON0_CLKVAL_F_SHIFT 6
#define VIDCON0_CLKVAL_F_LIMIT 0xff
#define VIDCON0_CLKVAL_F(_x) ((_x) << 6)
+#define VIDCON0_VCLK_MASK (1 << 5)
#define VIDCON0_VCLKFREE (1 << 5)
+#define VIDCON0_VCLK_NORMAL (0 << 5)
#define VIDCON0_CLKDIR (1 << 4)
#define VIDCON0_CLKSEL_MASK (0x3 << 2)
@@ -466,3 +468,44 @@
#define FIMD_V8_VIDTCON2 0x20018
#define FIMD_V8_VIDTCON3 0x2001C
#define FIMD_V8_VIDCON1 0x20004
+
+/* IELCD Register Offsets */
+#define IELCD_VIDCON0 (0x0000)
+#define IELCD_VIDCON1 (0x0004)
+
+#define IELCD_VIDTCON0 (0x0010)
+#define IELCD_VIDTCON1 (0x0014)
+#define IELCD_VIDTCON2 (0x0018)
+
+#define IELCD_WINCON0 (0x0020)
+#define IELCD_TRGSTATUS (1 << 25)
+
+#define IELCD_SHADOWCON (0x0034)
+
+#define IELCD_VIDOSD0A (0x0040)
+#define IELCD_VIDOSD0B (0x0044)
+#define IELCD_VIDOSD0C (0x0048)
+#define IELCD_VIDW00ADD2 (0x0100)
+
+#define IELCD_TRIGCON (0x01A4)
+#define IELCD_AUXCON (0x0278)
+
+/* Value */
+#define IELCD_MAGIC_KEY (0x2ff47)
+
+/* Register bit */
+#define IELCD_VIDTCON2_LINEVAL(_x) ((_x) << 12)
+#define IELCD_VIDTCON2_HOZVAL(_x) ((_x) << 0)
+
+/* IELCD_VIDCON0 */
+#define IELCD_SW_SHADOW_UPTRIG (1 << 14)
+
+/* IELCD_SHADOWCON */
+#define IELCD_W0_SW_SHADOW_UPTRIG (1 << 16)
+
+/* IELCD_IELCD_VIDOSD */
+#define IELCD_VIDOSDB_XPOS_END(_x) ((_x) << 11)
+#define IELCD_VIDOSDB_YPOS_END(_x) ((_x) << 0)
+
+#define SWTRGCMD_W0BUF (1 << 6)
+#define TRGMODE_W0BUF (1 << 5)
--
1.8.1.2
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