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SubjectRe: [PATCH v3 14/23] camss: vfe: Format conversion support using PIX interface
Hi Todor,

Are you trying to get acks by posting drivers so big and complex that it'd
be unwieldy to meaningfully review them? :-)

On Mon, Jul 17, 2017 at 01:33:40PM +0300, Todor Tomov wrote:
> Use VFE PIX input interface and do format conversion in VFE.
>
> Supported input format is UYVY (single plane YUV 4:2:2) and
> its different sample order variations.
>
> Supported output formats are:
> - NV12/NV21 (two plane YUV 4:2:0)
> - NV16/NV61 (two plane YUV 4:2:2)
>
> Signed-off-by: Todor Tomov <todor.tomov@linaro.org>
> ---
> .../media/platform/qcom/camss-8x16/camss-ispif.c | 2 +
> drivers/media/platform/qcom/camss-8x16/camss-vfe.c | 673 ++++++++++++++++++---
> drivers/media/platform/qcom/camss-8x16/camss-vfe.h | 13 +-
> .../media/platform/qcom/camss-8x16/camss-video.c | 332 +++++++---
> .../media/platform/qcom/camss-8x16/camss-video.h | 8 +-
> 5 files changed, 875 insertions(+), 153 deletions(-)
>
> diff --git a/drivers/media/platform/qcom/camss-8x16/camss-ispif.c b/drivers/media/platform/qcom/camss-8x16/camss-ispif.c
> index cc32085..04918c0 100644
> --- a/drivers/media/platform/qcom/camss-8x16/camss-ispif.c
> +++ b/drivers/media/platform/qcom/camss-8x16/camss-ispif.c
> @@ -969,6 +969,8 @@ static enum ispif_intf ispif_get_intf(enum vfe_line_id line_id)
> return RDI1;
> case (VFE_LINE_RDI2):
> return RDI2;
> + case (VFE_LINE_PIX):
> + return PIX0;
> default:
> return RDI0;
> }
> diff --git a/drivers/media/platform/qcom/camss-8x16/camss-vfe.c b/drivers/media/platform/qcom/camss-8x16/camss-vfe.c
> index b6dd29b..bef0209 100644
> --- a/drivers/media/platform/qcom/camss-8x16/camss-vfe.c
> +++ b/drivers/media/platform/qcom/camss-8x16/camss-vfe.c
> @@ -19,6 +19,7 @@
> #include <linux/completion.h>
> #include <linux/interrupt.h>
> #include <linux/iommu.h>
> +#include <linux/iopoll.h>
> #include <linux/mutex.h>
> #include <linux/of.h>
> #include <linux/platform_device.h>
> @@ -52,29 +53,53 @@
> #define VFE_0_GLOBAL_RESET_CMD_BUS_MISR (1 << 7)
> #define VFE_0_GLOBAL_RESET_CMD_TESTGEN (1 << 8)
>
> +#define VFE_0_MODULE_CFG 0x018
> +#define VFE_0_MODULE_CFG_DEMUX (1 << 2)
> +#define VFE_0_MODULE_CFG_CHROMA_UPSAMPLE (1 << 3)
> +#define VFE_0_MODULE_CFG_SCALE_ENC (1 << 23)
> +
> +#define VFE_0_CORE_CFG 0x01c
> +#define VFE_0_CORE_CFG_PIXEL_PATTERN_YCBYCR 0x4
> +#define VFE_0_CORE_CFG_PIXEL_PATTERN_YCRYCB 0x5
> +#define VFE_0_CORE_CFG_PIXEL_PATTERN_CBYCRY 0x6
> +#define VFE_0_CORE_CFG_PIXEL_PATTERN_CRYCBY 0x7
> +
> #define VFE_0_IRQ_CMD 0x024
> #define VFE_0_IRQ_CMD_GLOBAL_CLEAR (1 << 0)
>
> #define VFE_0_IRQ_MASK_0 0x028
> +#define VFE_0_IRQ_MASK_0_CAMIF_SOF (1 << 0)
> +#define VFE_0_IRQ_MASK_0_CAMIF_EOF (1 << 1)
> #define VFE_0_IRQ_MASK_0_RDIn_REG_UPDATE(n) (1 << ((n) + 5))
> +#define VFE_0_IRQ_MASK_0_line_n_REG_UPDATE(n) \
> + ((n) == VFE_LINE_PIX ? (1 << 4) : VFE_0_IRQ_MASK_0_RDIn_REG_UPDATE(n))
> #define VFE_0_IRQ_MASK_0_IMAGE_MASTER_n_PING_PONG(n) (1 << ((n) + 8))
> +#define VFE_0_IRQ_MASK_0_IMAGE_COMPOSITE_DONE_n(n) (1 << ((n) + 25))
> #define VFE_0_IRQ_MASK_0_RESET_ACK (1 << 31)
> #define VFE_0_IRQ_MASK_1 0x02c
> +#define VFE_0_IRQ_MASK_1_CAMIF_ERROR (1 << 0)
> #define VFE_0_IRQ_MASK_1_VIOLATION (1 << 7)
> #define VFE_0_IRQ_MASK_1_BUS_BDG_HALT_ACK (1 << 8)
> #define VFE_0_IRQ_MASK_1_IMAGE_MASTER_n_BUS_OVERFLOW(n) (1 << ((n) + 9))
> +#define VFE_0_IRQ_MASK_1_RDIn_SOF(n) (1 << ((n) + 29))
>
> #define VFE_0_IRQ_CLEAR_0 0x030
> #define VFE_0_IRQ_CLEAR_1 0x034
>
> #define VFE_0_IRQ_STATUS_0 0x038
> +#define VFE_0_IRQ_STATUS_0_CAMIF_SOF (1 << 0)
> #define VFE_0_IRQ_STATUS_0_RDIn_REG_UPDATE(n) (1 << ((n) + 5))
> +#define VFE_0_IRQ_STATUS_0_line_n_REG_UPDATE(n) \
> + ((n) == VFE_LINE_PIX ? (1 << 4) : VFE_0_IRQ_STATUS_0_RDIn_REG_UPDATE(n))
> #define VFE_0_IRQ_STATUS_0_IMAGE_MASTER_n_PING_PONG(n) (1 << ((n) + 8))
> +#define VFE_0_IRQ_STATUS_0_IMAGE_COMPOSITE_DONE_n(n) (1 << ((n) + 25))
> #define VFE_0_IRQ_STATUS_0_RESET_ACK (1 << 31)
> #define VFE_0_IRQ_STATUS_1 0x03c
> #define VFE_0_IRQ_STATUS_1_VIOLATION (1 << 7)
> #define VFE_0_IRQ_STATUS_1_BUS_BDG_HALT_ACK (1 << 8)
> +#define VFE_0_IRQ_STATUS_1_RDIn_SOF(n) (1 << ((n) + 29))
>
> +#define VFE_0_IRQ_COMPOSITE_MASK_0 0x40
> #define VFE_0_VIOLATION_STATUS 0x48
>
> #define VFE_0_BUS_CMD 0x4c
> @@ -83,7 +108,10 @@
> #define VFE_0_BUS_CFG 0x050
>
> #define VFE_0_BUS_XBAR_CFG_x(x) (0x58 + 0x4 * ((x) / 2))
> +#define VFE_0_BUS_XBAR_CFG_x_M_PAIR_STREAM_EN (1 << 1)
> +#define VFE_0_BUS_XBAR_CFG_x_M_PAIR_STREAM_SWAP_INTER_INTRA (0x3 << 4)
> #define VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_SHIFT 8
> +#define VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_LUMA 0
> #define VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_VAL_RDI0 5
> #define VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_VAL_RDI1 6
> #define VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_VAL_RDI2 7
> @@ -99,6 +127,8 @@
>
> #define VFE_0_BUS_IMAGE_MASTER_n_WR_UB_CFG(n) (0x07c + 0x24 * (n))
> #define VFE_0_BUS_IMAGE_MASTER_n_WR_UB_CFG_OFFSET_SHIFT 16
> +#define VFE_0_BUS_IMAGE_MASTER_n_WR_IMAGE_SIZE(n) (0x080 + 0x24 * (n))
> +#define VFE_0_BUS_IMAGE_MASTER_n_WR_BUFFER_CFG(n) (0x084 + 0x24 * (n))
> #define VFE_0_BUS_IMAGE_MASTER_n_WR_FRAMEDROP_PATTERN(n) \
> (0x088 + 0x24 * (n))
> #define VFE_0_BUS_IMAGE_MASTER_n_WR_IRQ_SUBSAMPLE_PATTERN(n) \
> @@ -128,8 +158,41 @@
> #define VFE_0_RDI_CFG_x_MIPI_EN_BITS 0x3
> #define VFE_0_RDI_CFG_x_RDI_Mr_FRAME_BASED_EN(r) (1 << (16 + (r)))
>
> +#define VFE_0_CAMIF_CMD 0x2f4
> +#define VFE_0_CAMIF_CMD_DISABLE_FRAME_BOUNDARY 0
> +#define VFE_0_CAMIF_CMD_ENABLE_FRAME_BOUNDARY 1
> +#define VFE_0_CAMIF_CMD_CLEAR_CAMIF_STATUS (1 << 2)
> +#define VFE_0_CAMIF_CFG 0x2f8
> +#define VFE_0_CAMIF_CFG_VFE_OUTPUT_EN (1 << 6)
> +#define VFE_0_CAMIF_FRAME_CFG 0x300
> +#define VFE_0_CAMIF_WINDOW_WIDTH_CFG 0x304
> +#define VFE_0_CAMIF_WINDOW_HEIGHT_CFG 0x308
> +#define VFE_0_CAMIF_SUBSAMPLE_CFG_0 0x30c
> +#define VFE_0_CAMIF_IRQ_SUBSAMPLE_PATTERN 0x314
> +#define VFE_0_CAMIF_STATUS 0x31c
> +#define VFE_0_CAMIF_STATUS_HALT (1 << 31)
> +
> #define VFE_0_REG_UPDATE 0x378
> #define VFE_0_REG_UPDATE_RDIn(n) (1 << (1 + (n)))
> +#define VFE_0_REG_UPDATE_line_n(n) \
> + ((n) == VFE_LINE_PIX ? 1 : VFE_0_REG_UPDATE_RDIn(n))
> +
> +#define VFE_0_DEMUX_CFG 0x424
> +#define VFE_0_DEMUX_GAIN_0 0x428
> +#define VFE_0_DEMUX_GAIN_1 0x42c
> +#define VFE_0_DEMUX_EVEN_CFG 0x438
> +#define VFE_0_DEMUX_ODD_CFG 0x43c
> +
> +#define VFE_0_SCALE_ENC_CBCR_CFG 0x778
> +#define VFE_0_SCALE_ENC_CBCR_H_IMAGE_SIZE 0x77c
> +#define VFE_0_SCALE_ENC_CBCR_H_PHASE 0x780
> +#define VFE_0_SCALE_ENC_CBCR_H_PAD 0x78c
> +#define VFE_0_SCALE_ENC_CBCR_V_IMAGE_SIZE 0x790
> +#define VFE_0_SCALE_ENC_CBCR_V_PHASE 0x794
> +#define VFE_0_SCALE_ENC_CBCR_V_PAD 0x7a0
> +
> +#define VFE_0_CLAMP_ENC_MAX_CFG 0x874
> +#define VFE_0_CLAMP_ENC_MIN_CFG 0x878
>
> #define VFE_0_CGC_OVERRIDE_1 0x974
> #define VFE_0_CGC_OVERRIDE_1_IMAGE_Mx_CGC_OVERRIDE(x) (1 << (x))
> @@ -143,6 +206,11 @@
> /* Frame drop value. NOTE: VAL + UPDATES should not exceed 31 */
> #define VFE_FRAME_DROP_VAL 20
>
> +#define VFE_NEXT_SOF_MS 500
> +
> +#define CAMIF_TIMEOUT_SLEEP_US 1000
> +#define CAMIF_TIMEOUT_ALL_US 1000000
> +
> static const u32 vfe_formats[] = {
> MEDIA_BUS_FMT_UYVY8_2X8,
> MEDIA_BUS_FMT_VYUY8_2X8,
> @@ -211,6 +279,32 @@ static void vfe_wm_frame_based(struct vfe_device *vfe, u8 wm, u8 enable)
> 1 << VFE_0_BUS_IMAGE_MASTER_n_WR_CFG_FRM_BASED_SHIFT);
> }
>
> +static void vfe_wm_line_based(struct vfe_device *vfe, u32 wm,
> + u16 width, u16 height, u32 enable)
> +{
> + u32 reg;
> +
> + if (enable) {
> + reg = height - 1;
> + reg |= (width / 16 - 1) << 16;
> +
> + writel_relaxed(reg, vfe->base +
> + VFE_0_BUS_IMAGE_MASTER_n_WR_IMAGE_SIZE(wm));
> +
> + reg = 0x3;
> + reg |= (height - 1) << 4;
> + reg |= (width / 8) << 16;
> +
> + writel_relaxed(reg, vfe->base +
> + VFE_0_BUS_IMAGE_MASTER_n_WR_BUFFER_CFG(wm));
> + } else {
> + writel_relaxed(0, vfe->base +
> + VFE_0_BUS_IMAGE_MASTER_n_WR_IMAGE_SIZE(wm));
> + writel_relaxed(0, vfe->base +
> + VFE_0_BUS_IMAGE_MASTER_n_WR_BUFFER_CFG(wm));
> + }
> +}
> +
> static void vfe_wm_set_framedrop_period(struct vfe_device *vfe, u8 wm, u8 per)
> {
> u32 reg;
> @@ -314,7 +408,10 @@ static void vfe_bus_connect_wm_to_rdi(struct vfe_device *vfe, u8 wm,
> reg <<= 16;
>
> vfe_reg_set(vfe, VFE_0_BUS_XBAR_CFG_x(wm), reg);
> +}
>
> +static void vfe_wm_set_subsample(struct vfe_device *vfe, u8 wm)
> +{
> writel_relaxed(VFE_0_BUS_IMAGE_MASTER_n_WR_IRQ_SUBSAMPLE_PATTERN_DEF,
> vfe->base +
> VFE_0_BUS_IMAGE_MASTER_n_WR_IRQ_SUBSAMPLE_PATTERN(wm));
> @@ -353,6 +450,38 @@ static void vfe_bus_disconnect_wm_from_rdi(struct vfe_device *vfe, u8 wm,
> vfe_reg_clr(vfe, VFE_0_BUS_XBAR_CFG_x(wm), reg);
> }
>
> +static void vfe_set_xbar_cfg(struct vfe_device *vfe, struct vfe_output *output,
> + u8 enable)
> +{
> + struct vfe_line *line = container_of(output, struct vfe_line, output);
> + u32 p = line->video_out.active_fmt.fmt.pix_mp.pixelformat;
> + u32 reg;
> + unsigned int i;
> +
> + for (i = 0; i < output->wm_num; i++) {
> + if (i == 0) {
> + reg = VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_LUMA <<
> + VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_SHIFT;
> + } else if (i == 1) {
> + reg = VFE_0_BUS_XBAR_CFG_x_M_PAIR_STREAM_EN;
> + if (p == V4L2_PIX_FMT_NV12 || p == V4L2_PIX_FMT_NV16)
> + reg |= VFE_0_BUS_XBAR_CFG_x_M_PAIR_STREAM_SWAP_INTER_INTRA;
> + }
> +
> + if (output->wm_idx[i] % 2 == 1)
> + reg <<= 16;
> +
> + if (enable)
> + vfe_reg_set(vfe,
> + VFE_0_BUS_XBAR_CFG_x(output->wm_idx[i]),
> + reg);
> + else
> + vfe_reg_clr(vfe,
> + VFE_0_BUS_XBAR_CFG_x(output->wm_idx[i]),
> + reg);
> + }
> +}
> +
> static void vfe_set_rdi_cid(struct vfe_device *vfe, enum vfe_line_id id, u8 cid)
> {
> vfe_reg_clr(vfe, VFE_0_RDI_CFG_x(id),
> @@ -364,7 +493,7 @@ static void vfe_set_rdi_cid(struct vfe_device *vfe, enum vfe_line_id id, u8 cid)
>
> static void vfe_reg_update(struct vfe_device *vfe, enum vfe_line_id line_id)
> {
> - vfe->reg_update |= VFE_0_REG_UPDATE_RDIn(line_id);
> + vfe->reg_update |= VFE_0_REG_UPDATE_line_n(line_id);
> wmb();
> writel_relaxed(vfe->reg_update, vfe->base + VFE_0_REG_UPDATE);
> wmb();
> @@ -374,8 +503,9 @@ static void vfe_enable_irq_wm_line(struct vfe_device *vfe, u8 wm,
> enum vfe_line_id line_id, u8 enable)
> {
> u32 irq_en0 = VFE_0_IRQ_MASK_0_IMAGE_MASTER_n_PING_PONG(wm) |
> - VFE_0_IRQ_MASK_0_RDIn_REG_UPDATE(line_id);
> - u32 irq_en1 = VFE_0_IRQ_MASK_1_IMAGE_MASTER_n_BUS_OVERFLOW(wm);
> + VFE_0_IRQ_MASK_0_line_n_REG_UPDATE(line_id);
> + u32 irq_en1 = VFE_0_IRQ_MASK_1_IMAGE_MASTER_n_BUS_OVERFLOW(wm) |
> + VFE_0_IRQ_MASK_1_RDIn_SOF(line_id);
>
> if (enable) {
> vfe_reg_set(vfe, VFE_0_IRQ_MASK_0, irq_en0);
> @@ -386,6 +516,37 @@ static void vfe_enable_irq_wm_line(struct vfe_device *vfe, u8 wm,
> }
> }
>
> +static void vfe_enable_irq_pix_line(struct vfe_device *vfe, u8 comp,
> + enum vfe_line_id line_id, u8 enable)
> +{
> + struct vfe_output *output = &vfe->line[line_id].output;
> + unsigned int i;
> + u32 irq_en0;
> + u32 irq_en1;
> + u32 comp_mask = 0;
> +
> + irq_en0 = VFE_0_IRQ_MASK_0_CAMIF_SOF;
> + irq_en0 |= VFE_0_IRQ_MASK_0_CAMIF_EOF;
> + irq_en0 |= VFE_0_IRQ_MASK_0_IMAGE_COMPOSITE_DONE_n(comp);
> + irq_en0 |= VFE_0_IRQ_MASK_0_line_n_REG_UPDATE(line_id);
> + irq_en1 = VFE_0_IRQ_MASK_1_CAMIF_ERROR;
> + for (i = 0; i < output->wm_num; i++) {
> + irq_en1 |= VFE_0_IRQ_MASK_1_IMAGE_MASTER_n_BUS_OVERFLOW(
> + output->wm_idx[i]);
> + comp_mask |= (1 << output->wm_idx[i]) << comp * 8;
> + }
> +
> + if (enable) {
> + vfe_reg_set(vfe, VFE_0_IRQ_MASK_0, irq_en0);
> + vfe_reg_set(vfe, VFE_0_IRQ_MASK_1, irq_en1);
> + vfe_reg_set(vfe, VFE_0_IRQ_COMPOSITE_MASK_0, comp_mask);
> + } else {
> + vfe_reg_clr(vfe, VFE_0_IRQ_MASK_0, irq_en0);
> + vfe_reg_clr(vfe, VFE_0_IRQ_MASK_1, irq_en1);
> + vfe_reg_clr(vfe, VFE_0_IRQ_COMPOSITE_MASK_0, comp_mask);
> + }
> +}
> +
> static void vfe_enable_irq_common(struct vfe_device *vfe)
> {
> u32 irq_en0 = VFE_0_IRQ_MASK_0_RESET_ACK;
> @@ -396,6 +557,83 @@ static void vfe_enable_irq_common(struct vfe_device *vfe)
> vfe_reg_set(vfe, VFE_0_IRQ_MASK_1, irq_en1);
> }
>
> +static void vfe_set_demux_cfg(struct vfe_device *vfe, struct vfe_line *line)
> +{
> + u32 even_cfg, odd_cfg;
> +
> + writel_relaxed(0x3, vfe->base + VFE_0_DEMUX_CFG);
> + writel_relaxed(0x800080, vfe->base + VFE_0_DEMUX_GAIN_0);
> + writel_relaxed(0x800080, vfe->base + VFE_0_DEMUX_GAIN_1);
> +
> + switch (line->fmt[MSM_VFE_PAD_SINK].code) {
> + case MEDIA_BUS_FMT_YUYV8_2X8:
> + even_cfg = 0x9cac;
> + odd_cfg = 0x9cac;

#Defines, please? Same below.

> + break;
> + case MEDIA_BUS_FMT_YVYU8_2X8:
> + even_cfg = 0xac9c;
> + odd_cfg = 0xac9c;
> + break;
> + case MEDIA_BUS_FMT_UYVY8_2X8:
> + default:
> + even_cfg = 0xc9ca;
> + odd_cfg = 0xc9ca;
> + break;
> + case MEDIA_BUS_FMT_VYUY8_2X8:
> + even_cfg = 0xcac9;
> + odd_cfg = 0xcac9;
> + break;
> + }
> +
> + writel_relaxed(even_cfg, vfe->base + VFE_0_DEMUX_EVEN_CFG);
> + writel_relaxed(odd_cfg, vfe->base + VFE_0_DEMUX_ODD_CFG);
> +}
> +
> +static void vfe_set_scale_cfg(struct vfe_device *vfe, struct vfe_line *line)
> +{
> + u32 p = line->video_out.active_fmt.fmt.pix_mp.pixelformat;
> + u32 reg;
> + u16 input, output;
> + u8 interp_reso;
> + u32 phase_mult;
> +
> + writel_relaxed(0x3, vfe->base + VFE_0_SCALE_ENC_CBCR_CFG);
> +
> + input = line->fmt[MSM_VFE_PAD_SINK].width;
> + output = line->fmt[MSM_VFE_PAD_SRC].width / 2;
> + reg = (output << 16) | input;
> + writel_relaxed(reg, vfe->base + VFE_0_SCALE_ENC_CBCR_H_IMAGE_SIZE);
> +
> + interp_reso = 3;
> + phase_mult = input * (1 << (13 + interp_reso)) / output;
> + reg = (interp_reso << 20) | phase_mult;
> + writel_relaxed(reg, vfe->base + VFE_0_SCALE_ENC_CBCR_H_PHASE);
> +
> + reg = input;
> + writel_relaxed(reg, vfe->base + VFE_0_SCALE_ENC_CBCR_H_PAD);
> +
> + input = line->fmt[MSM_VFE_PAD_SINK].height;
> + output = line->fmt[MSM_VFE_PAD_SRC].height;
> + if (p == V4L2_PIX_FMT_NV12 || p == V4L2_PIX_FMT_NV21)
> + output = line->fmt[MSM_VFE_PAD_SRC].height / 2;
> + reg = (output << 16) | input;
> + writel_relaxed(reg, vfe->base + VFE_0_SCALE_ENC_CBCR_V_IMAGE_SIZE);
> +
> + interp_reso = 3;
> + phase_mult = input * (1 << (13 + interp_reso)) / output;
> + reg = (interp_reso << 20) | phase_mult;
> + writel_relaxed(reg, vfe->base + VFE_0_SCALE_ENC_CBCR_V_PHASE);
> +
> + reg = input;
> + writel_relaxed(reg, vfe->base + VFE_0_SCALE_ENC_CBCR_V_PAD);
> +}
> +
> +static void vfe_set_clamp_cfg(struct vfe_device *vfe)
> +{
> + writel_relaxed(0x00ffffff, vfe->base + VFE_0_CLAMP_ENC_MAX_CFG);
> + writel_relaxed(0x0, vfe->base + VFE_0_CLAMP_ENC_MIN_CFG);

Ditto.

> +}
> +
> /*
> * vfe_reset - Trigger reset on VFE module and wait to complete
> * @vfe: VFE device

--
Regards,

Sakari Ailus
e-mail: sakari.ailus@iki.fi XMPP: sailus@retiisi.org.uk

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