[RFC][PATCH] [media] atmel-isc: add the isc pipeline function

From: Songjun Wu
Date: Fri Dec 02 2016 - 03:07:46 EST

Image Sensor Controller has an internal image processor.
It can convert raw format to the other formats, like
RGB565, YUV420P. A module parameter 'sensor_preferred'
is used to enable or disable the pipeline function.
Some v4l2 controls are added to tuning the image when
the pipeline function is enabled.

Signed-off-by: Songjun Wu <songjun.wu@xxxxxxxxxxxxx>
---

drivers/media/platform/atmel/atmel-isc-regs.h | 77 ++++-
drivers/media/platform/atmel/atmel-isc.c | 460 +++++++++++++++++++++-----
2 files changed, 449 insertions(+), 88 deletions(-)

diff --git a/drivers/media/platform/atmel/atmel-isc-regs.h b/drivers/media/platform/atmel/atmel-isc-regs.h
index 00c4497..7d83342 100644
--- a/drivers/media/platform/atmel/atmel-isc-regs.h
+++ b/drivers/media/platform/atmel/atmel-isc-regs.h
@@ -72,30 +72,98 @@
/* ISC White Balance Configuration Register */
#define ISC_WB_CFG 0x0000005c

+/* ISC White Balance Offset for R, GR Register */
+#define ISC_WB_O_RGR 0x00000060
+
+/* ISC White Balance Offset for B, GB Register */
+#define ISC_WB_O_BGR 0x00000064
+
+/* ISC White Balance Gain for R, GR Register */
+#define ISC_WB_G_RGR 0x00000068
+
+/* ISC White Balance Gain for B, GB Register */
+#define ISC_WB_G_BGR 0x0000006c
+
/* ISC Color Filter Array Control Register */
#define ISC_CFA_CTRL 0x00000070

/* ISC Color Filter Array Configuration Register */
#define ISC_CFA_CFG 0x00000074
+#define ISC_CFA_CFG_EITPOL BIT(4)

#define ISC_BAY_CFG_GRGR 0x0
#define ISC_BAY_CFG_RGRG 0x1
#define ISC_BAY_CFG_GBGB 0x2
#define ISC_BAY_CFG_BGBG 0x3
-#define ISC_BAY_CFG_MASK GENMASK(1, 0)

/* ISC Color Correction Control Register */
#define ISC_CC_CTRL 0x00000078

+/* ISC Color Correction RR RG Register */
+#define ISC_CC_RR_RG 0x0000007c
+
+/* ISC Color Correction RB OR Register */
+#define ISC_CC_RB_OR 0x00000080
+
+/* ISC Color Correction GR GG Register */
+#define ISC_CC_GR_GG 0x00000084
+
+/* ISC Color Correction GB OG Register */
+#define ISC_CC_GB_OG 0x00000088
+
+/* ISC Color Correction BR BG Register */
+#define ISC_CC_BR_BG 0x0000008c
+
+/* ISC Color Correction BB OB Register */
+#define ISC_CC_BB_OB 0x00000090
+
/* ISC Gamma Correction Control Register */
#define ISC_GAM_CTRL 0x00000094

+/* ISC_Gamma Correction Blue Entry Register */
+#define ISC_GAM_BENTRY 0x00000098
+
+/* ISC_Gamma Correction Green Entry Register */
+#define ISC_GAM_GENTRY 0x00000198
+
+/* ISC_Gamma Correction Green Entry Register */
+#define ISC_GAM_RENTRY 0x00000298
+
/* Color Space Conversion Control Register */
#define ISC_CSC_CTRL 0x00000398

+/* Color Space Conversion YR YG Register */
+#define ISC_CSC_YR_YG 0x0000039c
+
+/* Color Space Conversion YB OY Register */
+#define ISC_CSC_YB_OY 0x000003a0
+
+/* Color Space Conversion CBR CBG Register */
+#define ISC_CSC_CBR_CBG 0x000003a4
+
+/* Color Space Conversion CBB OCB Register */
+#define ISC_CSC_CBB_OCB 0x000003a8
+
+/* Color Space Conversion CRR CRG Register */
+#define ISC_CSC_CRR_CRG 0x000003ac
+
+/* Color Space Conversion CRB OCR Register */
+#define ISC_CSC_CRB_OCR 0x000003b0
+
/* Contrast And Brightness Control Register */
#define ISC_CBC_CTRL 0x000003b4

+/* Contrast And Brightness Configuration Register */
+#define ISC_CBC_CFG 0x000003b8
+
+/* Brightness Register */
+#define ISC_CBC_BRIGHT 0x000003bc
+#define ISC_CBC_BRIGHT_MASK GENMASK(10, 0)
+
+/* Contrast Register */
+#define ISC_CBC_CONTRAST 0x000003c0
+#define ISC_CBC_CONTRAST_MASK GENMASK(11, 0)
+
/* Subsampling 4:4:4 to 4:2:2 Control Register */
#define ISC_SUB422_CTRL 0x000003c4

@@ -159,7 +227,10 @@
/* DMA Address 0 Register */
#define ISC_DAD0 0x000003ec

-/* DMA Stride 0 Register */
-#define ISC_DST0 0x000003f0
+/* DMA Address 1 Register */
+#define ISC_DAD1 0x000003f4
+
+/* DMA Address 2 Register */
+#define ISC_DAD2 0x000003fc

#endif
diff --git a/drivers/media/platform/atmel/atmel-isc.c b/drivers/media/platform/atmel/atmel-isc.c
index fa68fe9..b06cbf6 100644
--- a/drivers/media/platform/atmel/atmel-isc.c
+++ b/drivers/media/platform/atmel/atmel-isc.c
@@ -36,7 +36,9 @@
#include <linux/regmap.h>
#include <linux/videodev2.h>

+#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
+#include <media/v4l2-event.h>
#include <media/v4l2-image-sizes.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-of.h>
@@ -89,10 +91,12 @@ struct isc_subdev_entity {
* struct isc_format - ISC media bus format information
* @fourcc: Fourcc code for this format
* @mbus_code: V4L2 media bus format code.
- * @bpp: Bytes per pixel (when stored in memory)
+ * @bpp: Bits per pixel (when stored in memory)
* @reg_bps: reg value for bits per sample
* (when transferred over a bus)
- * @support: Indicates format supported by subdev
+ * @pipeline: pipeline switch
+ * @sd_support: Subdev supports this format
+ * @isc_support: ISC can convert raw format to this format
*/
struct isc_format {
u32 fourcc;
@@ -100,11 +104,19 @@ struct isc_format {
u8 bpp;

u32 reg_bps;
+ u32 reg_bay_cfg;
u32 reg_rlp_mode;
u32 reg_dcfg_imode;
u32 reg_dctrl_dview;

- bool support;
+ u32 pipeline;
+
+ bool sd_support;
+ bool isc_support;
+};
+
+struct isc_ctrls {
+ struct v4l2_ctrl_handler handler;
};

#define ISC_PIPE_LINE_NODE_NUM 11
@@ -131,6 +143,9 @@ struct isc_device {
struct isc_format **user_formats;
unsigned int num_user_formats;
const struct isc_format *current_fmt;
+ const struct isc_format *raw_fmt;
+
+ struct isc_ctrls ctrls;

struct mutex lock;

@@ -140,51 +155,134 @@ struct isc_device {
struct list_head subdev_entities;
};

+#define RAW_FMT_INDEX_START 0
+#define RAW_FMT_INDEX_END 11
+#define ISC_FMT_INDEX_START 12
+#define ISC_FMT_INDEX_END 14
+
static struct isc_format isc_formats[] = {
- { V4L2_PIX_FMT_SBGGR8, MEDIA_BUS_FMT_SBGGR8_1X8,
- 1, ISC_PFE_CFG0_BPS_EIGHT, ISC_RLP_CFG_MODE_DAT8,
- ISC_DCFG_IMODE_PACKED8, ISC_DCTRL_DVIEW_PACKED, false },
- { V4L2_PIX_FMT_SGBRG8, MEDIA_BUS_FMT_SGBRG8_1X8,
- 1, ISC_PFE_CFG0_BPS_EIGHT, ISC_RLP_CFG_MODE_DAT8,
- ISC_DCFG_IMODE_PACKED8, ISC_DCTRL_DVIEW_PACKED, false },
- { V4L2_PIX_FMT_SGRBG8, MEDIA_BUS_FMT_SGRBG8_1X8,
- 1, ISC_PFE_CFG0_BPS_EIGHT, ISC_RLP_CFG_MODE_DAT8,
- ISC_DCFG_IMODE_PACKED8, ISC_DCTRL_DVIEW_PACKED, false },
- { V4L2_PIX_FMT_SRGGB8, MEDIA_BUS_FMT_SRGGB8_1X8,
- 1, ISC_PFE_CFG0_BPS_EIGHT, ISC_RLP_CFG_MODE_DAT8,
- ISC_DCFG_IMODE_PACKED8, ISC_DCTRL_DVIEW_PACKED, false },
-
- { V4L2_PIX_FMT_SBGGR10, MEDIA_BUS_FMT_SBGGR10_1X10,
- 2, ISC_PFG_CFG0_BPS_TEN, ISC_RLP_CFG_MODE_DAT10,
- ISC_DCFG_IMODE_PACKED16, ISC_DCTRL_DVIEW_PACKED, false },
- { V4L2_PIX_FMT_SGBRG10, MEDIA_BUS_FMT_SGBRG10_1X10,
- 2, ISC_PFG_CFG0_BPS_TEN, ISC_RLP_CFG_MODE_DAT10,
- ISC_DCFG_IMODE_PACKED16, ISC_DCTRL_DVIEW_PACKED, false },
- { V4L2_PIX_FMT_SGRBG10, MEDIA_BUS_FMT_SGRBG10_1X10,
- 2, ISC_PFG_CFG0_BPS_TEN, ISC_RLP_CFG_MODE_DAT10,
- ISC_DCFG_IMODE_PACKED16, ISC_DCTRL_DVIEW_PACKED, false },
- { V4L2_PIX_FMT_SRGGB10, MEDIA_BUS_FMT_SRGGB10_1X10,
- 2, ISC_PFG_CFG0_BPS_TEN, ISC_RLP_CFG_MODE_DAT10,
- ISC_DCFG_IMODE_PACKED16, ISC_DCTRL_DVIEW_PACKED, false },
-
- { V4L2_PIX_FMT_SBGGR12, MEDIA_BUS_FMT_SBGGR12_1X12,
- 2, ISC_PFG_CFG0_BPS_TWELVE, ISC_RLP_CFG_MODE_DAT12,
- ISC_DCFG_IMODE_PACKED16, ISC_DCTRL_DVIEW_PACKED, false },
- { V4L2_PIX_FMT_SGBRG12, MEDIA_BUS_FMT_SGBRG12_1X12,
- 2, ISC_PFG_CFG0_BPS_TWELVE, ISC_RLP_CFG_MODE_DAT12,
- ISC_DCFG_IMODE_PACKED16, ISC_DCTRL_DVIEW_PACKED, false },
- { V4L2_PIX_FMT_SGRBG12, MEDIA_BUS_FMT_SGRBG12_1X12,
- 2, ISC_PFG_CFG0_BPS_TWELVE, ISC_RLP_CFG_MODE_DAT12,
- ISC_DCFG_IMODE_PACKED16, ISC_DCTRL_DVIEW_PACKED, false },
- { V4L2_PIX_FMT_SRGGB12, MEDIA_BUS_FMT_SRGGB12_1X12,
- 2, ISC_PFG_CFG0_BPS_TWELVE, ISC_RLP_CFG_MODE_DAT12,
- ISC_DCFG_IMODE_PACKED16, ISC_DCTRL_DVIEW_PACKED, false },
-
- { V4L2_PIX_FMT_YUYV, MEDIA_BUS_FMT_YUYV8_2X8,
- 2, ISC_PFE_CFG0_BPS_EIGHT, ISC_RLP_CFG_MODE_DAT8,
- ISC_DCFG_IMODE_PACKED8, ISC_DCTRL_DVIEW_PACKED, false },
+ { V4L2_PIX_FMT_SBGGR8, MEDIA_BUS_FMT_SBGGR8_1X8, 8,
+ ISC_PFE_CFG0_BPS_EIGHT, ISC_BAY_CFG_BGBG, ISC_RLP_CFG_MODE_DAT8,
+ ISC_DCFG_IMODE_PACKED8, ISC_DCTRL_DVIEW_PACKED, 0x0,
+ false, false },
+ { V4L2_PIX_FMT_SGBRG8, MEDIA_BUS_FMT_SGBRG8_1X8, 8,
+ ISC_PFE_CFG0_BPS_EIGHT, ISC_BAY_CFG_GBGB, ISC_RLP_CFG_MODE_DAT8,
+ ISC_DCFG_IMODE_PACKED8, ISC_DCTRL_DVIEW_PACKED, 0x0,
+ false, false },
+ { V4L2_PIX_FMT_SGRBG8, MEDIA_BUS_FMT_SGRBG8_1X8, 8,
+ ISC_PFE_CFG0_BPS_EIGHT, ISC_BAY_CFG_GRGR, ISC_RLP_CFG_MODE_DAT8,
+ ISC_DCFG_IMODE_PACKED8, ISC_DCTRL_DVIEW_PACKED, 0x0,
+ false, false },
+ { V4L2_PIX_FMT_SRGGB8, MEDIA_BUS_FMT_SRGGB8_1X8, 8,
+ ISC_PFE_CFG0_BPS_EIGHT, ISC_BAY_CFG_RGRG, ISC_RLP_CFG_MODE_DAT8,
+ ISC_DCFG_IMODE_PACKED8, ISC_DCTRL_DVIEW_PACKED, 0x0,
+ false, false },
+
+ { V4L2_PIX_FMT_SBGGR10, MEDIA_BUS_FMT_SBGGR10_1X10, 16,
+ ISC_PFG_CFG0_BPS_TEN, ISC_BAY_CFG_BGBG, ISC_RLP_CFG_MODE_DAT10,
+ ISC_DCFG_IMODE_PACKED16, ISC_DCTRL_DVIEW_PACKED, 0x0,
+ false, false },
+ { V4L2_PIX_FMT_SGBRG10, MEDIA_BUS_FMT_SGBRG10_1X10, 16,
+ ISC_PFG_CFG0_BPS_TEN, ISC_BAY_CFG_GBGB, ISC_RLP_CFG_MODE_DAT10,
+ ISC_DCFG_IMODE_PACKED16, ISC_DCTRL_DVIEW_PACKED, 0x0,
+ false, false },
+ { V4L2_PIX_FMT_SGRBG10, MEDIA_BUS_FMT_SGRBG10_1X10, 16,
+ ISC_PFG_CFG0_BPS_TEN, ISC_BAY_CFG_GRGR, ISC_RLP_CFG_MODE_DAT10,
+ ISC_DCFG_IMODE_PACKED16, ISC_DCTRL_DVIEW_PACKED, 0x0,
+ false, false },
+ { V4L2_PIX_FMT_SRGGB10, MEDIA_BUS_FMT_SRGGB10_1X10, 16,
+ ISC_PFG_CFG0_BPS_TEN, ISC_BAY_CFG_RGRG, ISC_RLP_CFG_MODE_DAT10,
+ ISC_DCFG_IMODE_PACKED16, ISC_DCTRL_DVIEW_PACKED, 0x0,
+ false, false },
+
+ { V4L2_PIX_FMT_SBGGR12, MEDIA_BUS_FMT_SBGGR12_1X12, 16,
+ ISC_PFG_CFG0_BPS_TWELVE, ISC_BAY_CFG_BGBG, ISC_RLP_CFG_MODE_DAT12,
+ ISC_DCFG_IMODE_PACKED16, ISC_DCTRL_DVIEW_PACKED, 0x0,
+ false, false },
+ { V4L2_PIX_FMT_SGBRG12, MEDIA_BUS_FMT_SGBRG12_1X12, 16,
+ ISC_PFG_CFG0_BPS_TWELVE, ISC_BAY_CFG_GBGB, ISC_RLP_CFG_MODE_DAT12,
+ ISC_DCFG_IMODE_PACKED16, ISC_DCTRL_DVIEW_PACKED, 0x0,
+ false, false },
+ { V4L2_PIX_FMT_SGRBG12, MEDIA_BUS_FMT_SGRBG12_1X12, 16,
+ ISC_PFG_CFG0_BPS_TWELVE, ISC_BAY_CFG_GRGR, ISC_RLP_CFG_MODE_DAT12,
+ ISC_DCFG_IMODE_PACKED16, ISC_DCTRL_DVIEW_PACKED, 0x0,
+ false, false },
+ { V4L2_PIX_FMT_SRGGB12, MEDIA_BUS_FMT_SRGGB12_1X12, 16,
+ ISC_PFG_CFG0_BPS_TWELVE, ISC_BAY_CFG_RGRG, ISC_RLP_CFG_MODE_DAT12,
+ ISC_DCFG_IMODE_PACKED16, ISC_DCTRL_DVIEW_PACKED, 0x0,
+ false, false },
+
+ { V4L2_PIX_FMT_YUV420, 0x0, 12,
+ ISC_PFE_CFG0_BPS_EIGHT, ISC_BAY_CFG_BGBG, ISC_RLP_CFG_MODE_YYCC,
+ ISC_DCFG_IMODE_YC420P | ISC_DCFG_YMBSIZE_BEATS8 |
+ ISC_DCFG_CMBSIZE_BEATS8, ISC_DCTRL_DVIEW_PLANAR, 0x7fb,
+ false, false },
+ { V4L2_PIX_FMT_YUV422P, 0x0, 16,
+ ISC_PFE_CFG0_BPS_EIGHT, ISC_BAY_CFG_BGBG, ISC_RLP_CFG_MODE_YYCC,
+ ISC_DCFG_IMODE_YC422P | ISC_DCFG_YMBSIZE_BEATS8 |
+ ISC_DCFG_CMBSIZE_BEATS8, ISC_DCTRL_DVIEW_PLANAR, 0x3fb,
+ false, false },
+ { V4L2_PIX_FMT_RGB565, MEDIA_BUS_FMT_RGB565_2X8_LE, 16,
+ ISC_PFE_CFG0_BPS_EIGHT, ISC_BAY_CFG_BGBG, ISC_RLP_CFG_MODE_RGB565,
+ ISC_DCFG_IMODE_PACKED16, ISC_DCTRL_DVIEW_PACKED, 0x7b,
+ false, false },
+
+ { V4L2_PIX_FMT_YUYV, MEDIA_BUS_FMT_YUYV8_2X8, 16,
+ ISC_PFE_CFG0_BPS_EIGHT, ISC_BAY_CFG_BGBG, ISC_RLP_CFG_MODE_DAT8,
+ ISC_DCFG_IMODE_PACKED8, ISC_DCTRL_DVIEW_PACKED, 0x0,
+ false, false },
};

+#define GAMMA_MAX 3
+#define GAMMA_ENTRIES 64
+
+/* Gamma table with gamma 1/2.2 */
+static const u32 isc_gamma_table[GAMMA_MAX][GAMMA_ENTRIES] = {
+ /* 0 --> gamma 1/1.8 */
+ { 0x65, 0x66002F, 0x950025, 0xBB0020, 0xDB001D, 0xF8001A,
+ 0x1130018, 0x12B0017, 0x1420016, 0x1580014, 0x16D0013, 0x1810012,
+ 0x1940012, 0x1A60012, 0x1B80011, 0x1C90010, 0x1DA0010, 0x1EA000F,
+ 0x1FA000F, 0x209000F, 0x218000F, 0x227000E, 0x235000E, 0x243000E,
+ 0x251000E, 0x25F000D, 0x26C000D, 0x279000D, 0x286000D, 0x293000C,
+ 0x2A0000C, 0x2AC000C, 0x2B8000C, 0x2C4000C, 0x2D0000B, 0x2DC000B,
+ 0x2E7000B, 0x2F3000B, 0x2FE000B, 0x309000B, 0x314000B, 0x31F000A,
+ 0x32A000A, 0x334000B, 0x33F000A, 0x349000A, 0x354000A, 0x35E000A,
+ 0x368000A, 0x372000A, 0x37C000A, 0x386000A, 0x3900009, 0x399000A,
+ 0x3A30009, 0x3AD0009, 0x3B60009, 0x3BF000A, 0x3C90009, 0x3D20009,
+ 0x3DB0009, 0x3E40009, 0x3ED0009, 0x3F60009 },
+
+ /* 1 --> gamma 1/2 */
+ { 0x7F, 0x800034, 0xB50028, 0xDE0021, 0x100001E, 0x11E001B,
+ 0x1390019, 0x1520017, 0x16A0015, 0x1800014, 0x1940014, 0x1A80013,
+ 0x1BB0012, 0x1CD0011, 0x1DF0010, 0x1EF0010, 0x200000F, 0x20F000F,
+ 0x21F000E, 0x22D000F, 0x23C000E, 0x24A000E, 0x258000D, 0x265000D,
+ 0x273000C, 0x27F000D, 0x28C000C, 0x299000C, 0x2A5000C, 0x2B1000B,
+ 0x2BC000C, 0x2C8000B, 0x2D3000C, 0x2DF000B, 0x2EA000A, 0x2F5000A,
+ 0x2FF000B, 0x30A000A, 0x314000B, 0x31F000A, 0x329000A, 0x333000A,
+ 0x33D0009, 0x3470009, 0x350000A, 0x35A0009, 0x363000A, 0x36D0009,
+ 0x3760009, 0x37F0009, 0x3880009, 0x3910009, 0x39A0009, 0x3A30009,
+ 0x3AC0008, 0x3B40009, 0x3BD0008, 0x3C60008, 0x3CE0008, 0x3D60009,
+ 0x3DF0008, 0x3E70008, 0x3EF0008, 0x3F70008 },
+
+ /* 2 --> gamma 1/2.2 */
+ { 0x99, 0x9B0038, 0xD4002A, 0xFF0023, 0x122001F, 0x141001B,
+ 0x15D0019, 0x1760017, 0x18E0015, 0x1A30015, 0x1B80013, 0x1CC0012,
+ 0x1DE0011, 0x1F00010, 0x2010010, 0x2110010, 0x221000F, 0x230000F,
+ 0x23F000E, 0x24D000E, 0x25B000D, 0x269000C, 0x276000C, 0x283000C,
+ 0x28F000C, 0x29B000C, 0x2A7000C, 0x2B3000B, 0x2BF000B, 0x2CA000B,
+ 0x2D5000B, 0x2E0000A, 0x2EB000A, 0x2F5000A, 0x2FF000A, 0x30A000A,
+ 0x3140009, 0x31E0009, 0x327000A, 0x3310009, 0x33A0009, 0x3440009,
+ 0x34D0009, 0x3560009, 0x35F0009, 0x3680008, 0x3710008, 0x3790009,
+ 0x3820008, 0x38A0008, 0x3930008, 0x39B0008, 0x3A30008, 0x3AB0008,
+ 0x3B30008, 0x3BB0008, 0x3C30008, 0x3CB0007, 0x3D20008, 0x3DA0007,
+ 0x3E20007, 0x3E90007, 0x3F00008, 0x3F80007 },
+};
+
+static unsigned int sensor_preferred = 1;
+module_param(sensor_preferred, uint, 0644);
+MODULE_PARM_DESC(sensor_preferred,
+ "Sensor is preferred to output the specified format (1-on 0-off), default 1");
+
static int isc_clk_enable(struct clk_hw *hw)
{
struct isc_clk *isc_clk = to_isc_clk(hw);
@@ -447,27 +545,95 @@ static int isc_buffer_prepare(struct vb2_buffer *vb)
return 0;
}

-static inline void isc_start_dma(struct regmap *regmap,
- struct isc_buffer *frm, u32 dview)
+static inline bool sensor_is_preferred(const struct isc_format *isc_fmt)
+{
+ if ((sensor_preferred && isc_fmt->sd_support) ||
+ !isc_fmt->isc_support)
+ return true;
+ else
+ return false;
+}
+
+static inline void isc_start_dma(struct isc_device *isc)
{
- dma_addr_t addr;
+ struct regmap *regmap = isc->regmap;
+ struct v4l2_pix_format *pixfmt = &isc->fmt.fmt.pix;
+ u32 sizeimage = pixfmt->sizeimage;
+ u32 dctrl_dview;
+ dma_addr_t addr0;
+
+ addr0 = vb2_dma_contig_plane_dma_addr(&isc->cur_frm->vb.vb2_buf, 0);
+ regmap_write(regmap, ISC_DAD0, addr0);
+
+ switch (pixfmt->pixelformat) {
+ case V4L2_PIX_FMT_YUV420:
+ regmap_write(regmap, ISC_DAD1, addr0 + (sizeimage*2)/3);
+ regmap_write(regmap, ISC_DAD2, addr0 + (sizeimage*5)/6);
+ break;
+ case V4L2_PIX_FMT_YUV422P:
+ regmap_write(regmap, ISC_DAD1, addr0 + sizeimage/2);
+ regmap_write(regmap, ISC_DAD2, addr0 + (sizeimage*3)/4);
+ break;
+ }

- addr = vb2_dma_contig_plane_dma_addr(&frm->vb.vb2_buf, 0);
+ if (sensor_is_preferred(isc->current_fmt))
+ dctrl_dview = ISC_DCTRL_DVIEW_PACKED;
+ else
+ dctrl_dview = isc->current_fmt->reg_dctrl_dview;

- regmap_write(regmap, ISC_DCTRL, dview | ISC_DCTRL_IE_IS);
- regmap_write(regmap, ISC_DAD0, addr);
+ regmap_write(regmap, ISC_DCTRL, dctrl_dview | ISC_DCTRL_IE_IS);
regmap_write(regmap, ISC_CTRLEN, ISC_CTRL_CAPTURE);
}

static void isc_set_pipeline(struct isc_device *isc, u32 pipeline)
{
- u32 val;
+ struct regmap *regmap = isc->regmap;
+ u32 val, bay_cfg;
unsigned int i;

+ /* WB-->CFA-->CC-->GAM-->CSC-->CBC-->SUB422-->SUB420 */
for (i = 0; i < ISC_PIPE_LINE_NODE_NUM; i++) {
val = pipeline & BIT(i) ? 1 : 0;
regmap_field_write(isc->pipeline[i], val);
}
+
+ if (!pipeline)
+ return;
+
+ bay_cfg = isc->raw_fmt->reg_bay_cfg;
+
+ regmap_write(regmap, ISC_WB_CFG, bay_cfg);
+ regmap_write(regmap, ISC_CFA_CFG, bay_cfg | ISC_CFA_CFG_EITPOL);
+
+ /* Convert RGB to YUV */
+ regmap_write(regmap, ISC_CSC_YR_YG, 0x42 | (0x81 << 16));
+ regmap_write(regmap, ISC_CSC_YB_OY, 0x19 | (0x10 << 16));
+ regmap_write(regmap, ISC_CSC_CBR_CBG, 0xFDA | (0xFB6 << 16));
+ regmap_write(regmap, ISC_CSC_CBB_OCB, 0x70 | (0x80 << 16));
+ regmap_write(regmap, ISC_CSC_CRR_CRG, 0x70 | (0xFA2 << 16));
+ regmap_write(regmap, ISC_CSC_CRB_OCR, 0xFEE | (0x80 << 16));
+}
+
+static inline void isc_get_param(const struct isc_format *fmt,
+ u32 *rlp_mode, u32 *dcfg_imode)
+{
+ switch (fmt->fourcc) {
+ case V4L2_PIX_FMT_SBGGR10:
+ case V4L2_PIX_FMT_SGBRG10:
+ case V4L2_PIX_FMT_SGRBG10:
+ case V4L2_PIX_FMT_SRGGB10:
+ case V4L2_PIX_FMT_SBGGR12:
+ case V4L2_PIX_FMT_SGBRG12:
+ case V4L2_PIX_FMT_SGRBG12:
+ case V4L2_PIX_FMT_SRGGB12:
+ *rlp_mode = fmt->reg_rlp_mode;
+ *dcfg_imode = fmt->reg_dcfg_imode;
+ break;
+ default:
+ *rlp_mode = ISC_RLP_CFG_MODE_DAT8;
+ *dcfg_imode = ISC_DCFG_IMODE_PACKED8;
+ break;
+ }
}

static int isc_configure(struct isc_device *isc)
@@ -475,33 +641,42 @@ static int isc_configure(struct isc_device *isc)
struct regmap *regmap = isc->regmap;
const struct isc_format *current_fmt = isc->current_fmt;
struct isc_subdev_entity *subdev = isc->current_subdev;
- u32 val, mask;
- int counter = 10;
+ u32 pfe_cfg0, rlp_mode, dcfg_imode, sr, mask, pipeline;
+ int counter = 100;
+
+ if (sensor_is_preferred(current_fmt)) {
+ pfe_cfg0 = current_fmt->reg_bps;
+ pipeline = 0x0;
+ isc_get_param(current_fmt, &rlp_mode, &dcfg_imode);
+ } else {
+ pfe_cfg0 = isc->raw_fmt->reg_bps;
+ pipeline = current_fmt->pipeline;
+ rlp_mode = current_fmt->reg_rlp_mode;
+ dcfg_imode = current_fmt->reg_dcfg_imode;
+ }

- val = current_fmt->reg_bps | subdev->pfe_cfg0 |
- ISC_PFE_CFG0_MODE_PROGRESSIVE;
+ pfe_cfg0 |= subdev->pfe_cfg0 | ISC_PFE_CFG0_MODE_PROGRESSIVE;
mask = ISC_PFE_CFG0_BPS_MASK | ISC_PFE_CFG0_HPOL_LOW |
ISC_PFE_CFG0_VPOL_LOW | ISC_PFE_CFG0_PPOL_LOW |
ISC_PFE_CFG0_MODE_MASK;

- regmap_update_bits(regmap, ISC_PFE_CFG0, mask, val);
+ regmap_update_bits(regmap, ISC_PFE_CFG0, mask, pfe_cfg0);

regmap_update_bits(regmap, ISC_RLP_CFG, ISC_RLP_CFG_MODE_MASK,
- current_fmt->reg_rlp_mode);
+ rlp_mode);

- regmap_update_bits(regmap, ISC_DCFG, ISC_DCFG_IMODE_MASK,
- current_fmt->reg_dcfg_imode);
+ regmap_update_bits(regmap, ISC_DCFG, ISC_DCFG_IMODE_MASK, dcfg_imode);

- /* Disable the pipeline */
- isc_set_pipeline(isc, 0x0);
+ /* Set the pipeline */
+ isc_set_pipeline(isc, pipeline);

/* Update profile */
regmap_write(regmap, ISC_CTRLEN, ISC_CTRL_UPPRO);

- regmap_read(regmap, ISC_CTRLSR, &val);
- while ((val & ISC_CTRL_UPPRO) && counter--) {
+ regmap_read(regmap, ISC_CTRLSR, &sr);
+ while ((sr & ISC_CTRL_UPPRO) && counter--) {
usleep_range(1000, 2000);
- regmap_read(regmap, ISC_CTRLSR, &val);
+ regmap_read(regmap, ISC_CTRLSR, &sr);
}

if (counter < 0)
@@ -551,7 +726,7 @@ static int isc_start_streaming(struct vb2_queue *vq, unsigned int count)
struct isc_buffer, list);
list_del(&isc->cur_frm->list);

- isc_start_dma(regmap, isc->cur_frm, isc->current_fmt->reg_dctrl_dview);
+ isc_start_dma(isc);

spin_unlock_irqrestore(&isc->dma_queue_lock, flags);

@@ -620,8 +795,7 @@ static void isc_buffer_queue(struct vb2_buffer *vb)
if (!isc->cur_frm && list_empty(&isc->dma_queue) &&
vb2_is_streaming(vb->vb2_queue)) {
isc->cur_frm = buf;
- isc_start_dma(isc->regmap, isc->cur_frm,
- isc->current_fmt->reg_dctrl_dview);
+ isc_start_dma(isc);
} else
list_add_tail(&buf->list, &isc->dma_queue);
spin_unlock_irqrestore(&isc->dma_queue_lock, flags);
@@ -691,13 +865,14 @@ static struct isc_format *find_format_by_fourcc(struct isc_device *isc,
}

static int isc_try_fmt(struct isc_device *isc, struct v4l2_format *f,
- struct isc_format **current_fmt)
+ struct isc_format **current_fmt, u32 *code)
{
struct isc_format *isc_fmt;
struct v4l2_pix_format *pixfmt = &f->fmt.pix;
struct v4l2_subdev_format format = {
.which = V4L2_SUBDEV_FORMAT_TRY,
};
+ u32 mbus_code;
int ret;

if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
@@ -717,7 +892,12 @@ static int isc_try_fmt(struct isc_device *isc, struct v4l2_format *f,
if (pixfmt->height > ISC_MAX_SUPPORT_HEIGHT)
pixfmt->height = ISC_MAX_SUPPORT_HEIGHT;

- v4l2_fill_mbus_format(&format.format, pixfmt, isc_fmt->mbus_code);
+ if (sensor_is_preferred(isc_fmt))
+ mbus_code = isc_fmt->mbus_code;
+ else
+ mbus_code = isc->raw_fmt->mbus_code;
+
+ v4l2_fill_mbus_format(&format.format, pixfmt, mbus_code);
ret = v4l2_subdev_call(isc->current_subdev->sd, pad, set_fmt,
isc->current_subdev->config, &format);
if (ret < 0)
@@ -726,12 +906,15 @@ static int isc_try_fmt(struct isc_device *isc, struct v4l2_format *f,
v4l2_fill_pix_format(pixfmt, &format.format);

pixfmt->field = V4L2_FIELD_NONE;
- pixfmt->bytesperline = pixfmt->width * isc_fmt->bpp;
+ pixfmt->bytesperline = (pixfmt->width * isc_fmt->bpp) >> 3;
pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;

if (current_fmt)
*current_fmt = isc_fmt;

+ if (code)
+ *code = mbus_code;
+
return 0;
}

@@ -741,14 +924,14 @@ static int isc_set_fmt(struct isc_device *isc, struct v4l2_format *f)
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
};
struct isc_format *current_fmt;
+ u32 mbus_code;
int ret;

- ret = isc_try_fmt(isc, f, &current_fmt);
+ ret = isc_try_fmt(isc, f, &current_fmt, &mbus_code);
if (ret)
return ret;

- v4l2_fill_mbus_format(&format.format, &f->fmt.pix,
- current_fmt->mbus_code);
+ v4l2_fill_mbus_format(&format.format, &f->fmt.pix, mbus_code);
ret = v4l2_subdev_call(isc->current_subdev->sd, pad,
set_fmt, NULL, &format);
if (ret < 0)
@@ -776,7 +959,7 @@ static int isc_try_fmt_vid_cap(struct file *file, void *priv,
{
struct isc_device *isc = video_drvdata(file);

- return isc_try_fmt(isc, f, NULL);
+ return isc_try_fmt(isc, f, NULL, NULL);
}

static int isc_enum_input(struct file *file, void *priv,
@@ -842,7 +1025,10 @@ static int isc_enum_framesizes(struct file *file, void *fh,
if (!isc_fmt)
return -EINVAL;

- fse.code = isc_fmt->mbus_code;
+ if (sensor_is_preferred(isc_fmt))
+ fse.code = isc_fmt->mbus_code;
+ else
+ fse.code = isc->raw_fmt->mbus_code;

ret = v4l2_subdev_call(isc->current_subdev->sd, pad, enum_frame_size,
NULL, &fse);
@@ -873,7 +1059,10 @@ static int isc_enum_frameintervals(struct file *file, void *fh,
if (!isc_fmt)
return -EINVAL;

- fie.code = isc_fmt->mbus_code;
+ if (sensor_is_preferred(isc_fmt))
+ fie.code = isc_fmt->mbus_code;
+ else
+ fie.code = isc->raw_fmt->mbus_code;

ret = v4l2_subdev_call(isc->current_subdev->sd, pad,
enum_frame_interval, NULL, &fie);
@@ -911,6 +1100,10 @@ static const struct v4l2_ioctl_ops isc_ioctl_ops = {
.vidioc_s_parm = isc_s_parm,
.vidioc_enum_framesizes = isc_enum_framesizes,
.vidioc_enum_frameintervals = isc_enum_frameintervals,
+
+ .vidioc_log_status = v4l2_ctrl_log_status,
+ .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};

static int isc_open(struct file *file)
@@ -1007,8 +1200,7 @@ static irqreturn_t isc_interrupt(int irq, void *dev_id)
struct isc_buffer, list);
list_del(&isc->cur_frm->list);

- isc_start_dma(regmap, isc->cur_frm,
- isc->current_fmt->reg_dctrl_dview);
+ isc_start_dma(isc);
}

if (isc->stop)
@@ -1051,6 +1243,7 @@ static void isc_async_unbind(struct v4l2_async_notifier *notifier,
video_unregister_device(&isc->video_dev);
if (isc->current_subdev->config)
v4l2_subdev_free_pad_config(isc->current_subdev->config);
+ v4l2_ctrl_handler_free(&isc->ctrls.handler);
}

static struct isc_format *find_format_by_code(unsigned int code, int *index)
@@ -1081,7 +1274,9 @@ static int isc_formats_init(struct isc_device *isc)

fmt = &isc_formats[0];
for (i = 0; i < ARRAY_SIZE(isc_formats); i++) {
- fmt->support = false;
+ fmt->isc_support = false;
+ fmt->sd_support = false;
+
fmt++;
}

@@ -1092,8 +1287,22 @@ static int isc_formats_init(struct isc_device *isc)
if (!fmt)
continue;

- fmt->support = true;
- num_fmts++;
+ fmt->sd_support = true;
+
+ if (i <= RAW_FMT_INDEX_END) {
+ for (j = ISC_FMT_INDEX_START;
+ j <= ISC_FMT_INDEX_END; j++)
+ isc_formats[j].isc_support = true;
+
+ isc->raw_fmt = fmt;
+ }
+ }
+
+ for (i = 0, num_fmts = 0; i < ARRAY_SIZE(isc_formats); i++) {
+ if (fmt->isc_support || fmt->sd_support)
+ num_fmts++;
+
+ fmt++;
}

if (!num_fmts)
@@ -1110,7 +1319,7 @@ static int isc_formats_init(struct isc_device *isc)

fmt = &isc_formats[0];
for (i = 0, j = 0; i < ARRAY_SIZE(isc_formats); i++) {
- if (fmt->support)
+ if (fmt->isc_support || fmt->sd_support)
isc->user_formats[j++] = fmt;

fmt++;
@@ -1132,7 +1341,7 @@ static int isc_set_default_fmt(struct isc_device *isc)
};
int ret;

- ret = isc_try_fmt(isc, &f, NULL);
+ ret = isc_try_fmt(isc, &f, NULL, NULL);
if (ret)
return ret;

@@ -1142,6 +1351,73 @@ static int isc_set_default_fmt(struct isc_device *isc)
return 0;
}

+static void isc_set_gamma(struct isc_device *isc, u32 index)
+{
+ const u32 *gamma = &isc_gamma_table[index][0];
+ struct regmap *regmap = isc->regmap;
+
+ regmap_bulk_write(regmap, ISC_GAM_BENTRY, gamma, GAMMA_ENTRIES);
+ regmap_bulk_write(regmap, ISC_GAM_GENTRY, gamma, GAMMA_ENTRIES);
+ regmap_bulk_write(regmap, ISC_GAM_RENTRY, gamma, GAMMA_ENTRIES);
+}
+
+static int isc_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct isc_device *isc = container_of(ctrl->handler,
+ struct isc_device, ctrls.handler);
+
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ regmap_write(isc->regmap, ISC_CBC_BRIGHT,
+ ctrl->val & ISC_CBC_BRIGHT_MASK);
+ break;
+ case V4L2_CID_CONTRAST:
+ regmap_write(isc->regmap, ISC_CBC_CONTRAST,
+ (ctrl->val << 8) & ISC_CBC_CONTRAST_MASK);
+ break;
+ case V4L2_CID_GAMMA:
+ isc_set_gamma(isc, ctrl->val);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static const struct v4l2_ctrl_ops isc_ctrl_ops = {
+ .s_ctrl = isc_s_ctrl,
+};
+
+static int isc_ctrl_init(struct isc_device *isc)
+{
+ const struct v4l2_ctrl_ops *ops = &isc_ctrl_ops;
+ struct v4l2_ctrl_handler *hdl = &isc->ctrls.handler;
+ int ret;
+
+ ret = v4l2_ctrl_handler_init(hdl, 3);
+ if (ret < 0)
+ return ret;
+
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_BRIGHTNESS, -1024, 1023, 1, 0);
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_CONTRAST, -8, 7, 1, 1);
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_GAMMA, 0, GAMMA_MAX - 1, 1, 2);
+
+ v4l2_ctrl_handler_setup(hdl);
+
+ return 0;
+}
+
+static void isc_regs_init(struct isc_device *isc)
+{
+ struct regmap *regmap = isc->regmap;
+
+ regmap_write(regmap, ISC_WB_O_RGR, 0x0);
+ regmap_write(regmap, ISC_WB_O_BGR, 0x0);
+ regmap_write(regmap, ISC_WB_G_RGR, 0x200 | (0x200 << 16));
+ regmap_write(regmap, ISC_WB_G_BGR, 0x200 | (0x200 << 16));
+}
+
static int isc_async_complete(struct v4l2_async_notifier *notifier)
{
struct isc_device *isc = container_of(notifier->v4l2_dev,
@@ -1151,6 +1427,12 @@ static int isc_async_complete(struct v4l2_async_notifier *notifier)
struct vb2_queue *q = &isc->vb2_vidq;
int ret;

+ ret = v4l2_device_register_subdev_nodes(&isc->v4l2_dev);
+ if (ret < 0) {
+ v4l2_err(&isc->v4l2_dev, "Failed to register subdev nodes\n");
+ return ret;
+ }
+
isc->current_subdev = container_of(notifier,
struct isc_subdev_entity, notifier);
sd_entity = isc->current_subdev;
@@ -1198,6 +1480,14 @@ static int isc_async_complete(struct v4l2_async_notifier *notifier)
return ret;
}

+ ret = isc_ctrl_init(isc);
+ if (ret) {
+ v4l2_err(&isc->v4l2_dev, "Init isc ctrols failed: %d\n", ret);
+ return ret;
+ }
+
+ isc_regs_init(isc);
+
/* Register video device */
strlcpy(vdev->name, ATMEL_ISC_NAME, sizeof(vdev->name));
vdev->release = video_device_release_empty;
@@ -1207,7 +1497,7 @@ static int isc_async_complete(struct v4l2_async_notifier *notifier)
vdev->vfl_dir = VFL_DIR_RX;
vdev->queue = q;
vdev->lock = &isc->lock;
- vdev->ctrl_handler = isc->current_subdev->sd->ctrl_handler;
+ vdev->ctrl_handler = &isc->ctrls.handler;
vdev->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE;
video_set_drvdata(vdev, isc);

--
2.7.4