[media] s5p-fimc: Add support for ISP Writeback data input bus type
A second sink pad is added to each FIMC.N subdev that will be used
to link it to the FIMC-IS-ISP subdev. Only V4L2_MBUS_FMT_YUV10_1X30
format is supported at this pad (FIMC_SD_PAD_SINK_FIFO).
The routine checking for mismatch in the image formats at sides of
the links is updated to account for the fact FIMC.X subdevs now have
sink pads at the pad indexes 0, 1 and source pad at pad index 2.
If link to FIMC.X pad 1 is activated we switch FIMC input data bus
type to the ISP Writeback. Only a single active link to FIMC.X pad 0
or 1 will be allowed at any time.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/platform/s5p-fimc/fimc-reg.h b/drivers/media/platform/s5p-fimc/fimc-reg.h
index 1a40df6..01da7f3 100644
--- a/drivers/media/platform/s5p-fimc/fimc-reg.h
+++ b/drivers/media/platform/s5p-fimc/fimc-reg.h
@@ -52,6 +52,8 @@
#define FIMC_REG_CIGCTRL_IRQ_CLR (1 << 19)
#define FIMC_REG_CIGCTRL_IRQ_ENABLE (1 << 16)
#define FIMC_REG_CIGCTRL_SHDW_DISABLE (1 << 12)
+/* 0 - selects Writeback A (LCD), 1 - selects Writeback B (LCD/ISP) */
+#define FIMC_REG_CIGCTRL_SELWB_A (1 << 10)
#define FIMC_REG_CIGCTRL_CAM_JPEG (1 << 8)
#define FIMC_REG_CIGCTRL_SELCAM_MIPI_A (1 << 7)
#define FIMC_REG_CIGCTRL_CAMIF_SELWB (1 << 6)
@@ -276,6 +278,14 @@
/* Output frame buffer sequence mask */
#define FIMC_REG_CIFCNTSEQ 0x1fc
+/* SYSREG ISP Writeback register address offsets */
+#define SYSREG_ISPBLK 0x020c
+#define SYSREG_ISPBLK_FIFORST_CAM_BLK (1 << 7)
+
+#define SYSREG_CAMBLK 0x0218
+#define SYSREG_CAMBLK_FIFORST_ISP (1 << 15)
+#define SYSREG_CAMBLK_ISPWB_FULL_EN (7 << 20)
+
/*
* Function declarations
*/
@@ -309,6 +319,7 @@
void fimc_hw_disable_capture(struct fimc_dev *dev);
s32 fimc_hw_get_frame_index(struct fimc_dev *dev);
s32 fimc_hw_get_prev_frame_index(struct fimc_dev *dev);
+int fimc_hw_camblk_cfg_writeback(struct fimc_dev *fimc);
void fimc_activate_capture(struct fimc_ctx *ctx);
void fimc_deactivate_capture(struct fimc_dev *fimc);