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linux/drivers/media/platform/exynos-gsc/gsc-core.c
Ezequiel Garcia b3ab1c6058 media: Add V4L2_TYPE_IS_CAPTURE helper 
It's all too easy to get confused by the V4L2_TYPE_IS_OUTPUT
macro, when it's used as !V4L2_TYPE_IS_OUTPUT.

Reduce the risk of confusion with macro to explicitly
check for the CAPTURE queue type case.

This change does not affect functionality, and it's
only intended to make the code more readable.

Suggested-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
[hverkuil-cisco@xs4all.nl: checkpatch: align with parenthesis]
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2020-07-19 08:13:24 +02:00

1330 lines
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2011 - 2012 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* Samsung EXYNOS5 SoC series G-Scaler driver
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/bug.h>
#include <linux/interrupt.h>
#include <linux/workqueue.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/list.h>
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/clk.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <media/v4l2-ioctl.h>
#include "gsc-core.h"
static const struct gsc_fmt gsc_formats[] = {
{
.pixelformat = V4L2_PIX_FMT_RGB565X,
.depth = { 16 },
.color = GSC_RGB,
.num_planes = 1,
.num_comp = 1,
}, {
.pixelformat = V4L2_PIX_FMT_BGR32,
.depth = { 32 },
.color = GSC_RGB,
.num_planes = 1,
.num_comp = 1,
}, {
.pixelformat = V4L2_PIX_FMT_YUYV,
.depth = { 16 },
.color = GSC_YUV422,
.yorder = GSC_LSB_Y,
.corder = GSC_CBCR,
.num_planes = 1,
.num_comp = 1,
.mbus_code = MEDIA_BUS_FMT_YUYV8_2X8,
}, {
.pixelformat = V4L2_PIX_FMT_UYVY,
.depth = { 16 },
.color = GSC_YUV422,
.yorder = GSC_LSB_C,
.corder = GSC_CBCR,
.num_planes = 1,
.num_comp = 1,
.mbus_code = MEDIA_BUS_FMT_UYVY8_2X8,
}, {
.pixelformat = V4L2_PIX_FMT_VYUY,
.depth = { 16 },
.color = GSC_YUV422,
.yorder = GSC_LSB_C,
.corder = GSC_CRCB,
.num_planes = 1,
.num_comp = 1,
.mbus_code = MEDIA_BUS_FMT_VYUY8_2X8,
}, {
.pixelformat = V4L2_PIX_FMT_YVYU,
.depth = { 16 },
.color = GSC_YUV422,
.yorder = GSC_LSB_Y,
.corder = GSC_CRCB,
.num_planes = 1,
.num_comp = 1,
.mbus_code = MEDIA_BUS_FMT_YVYU8_2X8,
}, {
.pixelformat = V4L2_PIX_FMT_YUV32,
.depth = { 32 },
.color = GSC_YUV444,
.yorder = GSC_LSB_Y,
.corder = GSC_CBCR,
.num_planes = 1,
.num_comp = 1,
}, {
.pixelformat = V4L2_PIX_FMT_YUV422P,
.depth = { 16 },
.color = GSC_YUV422,
.yorder = GSC_LSB_Y,
.corder = GSC_CBCR,
.num_planes = 1,
.num_comp = 3,
}, {
.pixelformat = V4L2_PIX_FMT_NV16,
.depth = { 16 },
.color = GSC_YUV422,
.yorder = GSC_LSB_Y,
.corder = GSC_CBCR,
.num_planes = 1,
.num_comp = 2,
}, {
.pixelformat = V4L2_PIX_FMT_NV16M,
.depth = { 8, 8 },
.color = GSC_YUV422,
.yorder = GSC_LSB_Y,
.corder = GSC_CBCR,
.num_planes = 2,
.num_comp = 2,
}, {
.pixelformat = V4L2_PIX_FMT_NV61,
.depth = { 16 },
.color = GSC_YUV422,
.yorder = GSC_LSB_Y,
.corder = GSC_CRCB,
.num_planes = 1,
.num_comp = 2,
}, {
.pixelformat = V4L2_PIX_FMT_NV61M,
.depth = { 8, 8 },
.color = GSC_YUV422,
.yorder = GSC_LSB_Y,
.corder = GSC_CRCB,
.num_planes = 2,
.num_comp = 2,
}, {
.pixelformat = V4L2_PIX_FMT_YUV420,
.depth = { 12 },
.color = GSC_YUV420,
.yorder = GSC_LSB_Y,
.corder = GSC_CBCR,
.num_planes = 1,
.num_comp = 3,
}, {
.pixelformat = V4L2_PIX_FMT_YVU420,
.depth = { 12 },
.color = GSC_YUV420,
.yorder = GSC_LSB_Y,
.corder = GSC_CRCB,
.num_planes = 1,
.num_comp = 3,
}, {
.pixelformat = V4L2_PIX_FMT_NV12,
.depth = { 12 },
.color = GSC_YUV420,
.yorder = GSC_LSB_Y,
.corder = GSC_CBCR,
.num_planes = 1,
.num_comp = 2,
}, {
.pixelformat = V4L2_PIX_FMT_NV21,
.depth = { 12 },
.color = GSC_YUV420,
.yorder = GSC_LSB_Y,
.corder = GSC_CRCB,
.num_planes = 1,
.num_comp = 2,
}, {
.pixelformat = V4L2_PIX_FMT_NV21M,
.depth = { 8, 4 },
.color = GSC_YUV420,
.yorder = GSC_LSB_Y,
.corder = GSC_CRCB,
.num_planes = 2,
.num_comp = 2,
}, {
.pixelformat = V4L2_PIX_FMT_NV12M,
.depth = { 8, 4 },
.color = GSC_YUV420,
.yorder = GSC_LSB_Y,
.corder = GSC_CBCR,
.num_planes = 2,
.num_comp = 2,
}, {
.pixelformat = V4L2_PIX_FMT_YUV420M,
.depth = { 8, 2, 2 },
.color = GSC_YUV420,
.yorder = GSC_LSB_Y,
.corder = GSC_CBCR,
.num_planes = 3,
.num_comp = 3,
}, {
.pixelformat = V4L2_PIX_FMT_YVU420M,
.depth = { 8, 2, 2 },
.color = GSC_YUV420,
.yorder = GSC_LSB_Y,
.corder = GSC_CRCB,
.num_planes = 3,
.num_comp = 3,
}, {
.pixelformat = V4L2_PIX_FMT_NV12MT_16X16,
.depth = { 8, 4 },
.color = GSC_YUV420,
.yorder = GSC_LSB_Y,
.corder = GSC_CBCR,
.num_planes = 2,
.num_comp = 2,
}
};
const struct gsc_fmt *get_format(int index)
{
if (index >= ARRAY_SIZE(gsc_formats))
return NULL;
return (struct gsc_fmt *)&gsc_formats[index];
}
const struct gsc_fmt *find_fmt(u32 *pixelformat, u32 *mbus_code, u32 index)
{
const struct gsc_fmt *fmt, *def_fmt = NULL;
unsigned int i;
if (index >= ARRAY_SIZE(gsc_formats))
return NULL;
for (i = 0; i < ARRAY_SIZE(gsc_formats); ++i) {
fmt = get_format(i);
if (pixelformat && fmt->pixelformat == *pixelformat)
return fmt;
if (mbus_code && fmt->mbus_code == *mbus_code)
return fmt;
if (index == i)
def_fmt = fmt;
}
return def_fmt;
}
void gsc_set_frame_size(struct gsc_frame *frame, int width, int height)
{
frame->f_width = width;
frame->f_height = height;
frame->crop.width = width;
frame->crop.height = height;
frame->crop.left = 0;
frame->crop.top = 0;
}
int gsc_cal_prescaler_ratio(struct gsc_variant *var, u32 src, u32 dst,
u32 *ratio)
{
if ((dst > src) || (dst >= src / var->poly_sc_down_max)) {
*ratio = 1;
return 0;
}
if ((src / var->poly_sc_down_max / var->pre_sc_down_max) > dst) {
pr_err("Exceeded maximum downscaling ratio (1/16))");
return -EINVAL;
}
*ratio = (dst > (src / 8)) ? 2 : 4;
return 0;
}
void gsc_get_prescaler_shfactor(u32 hratio, u32 vratio, u32 *sh)
{
if (hratio == 4 && vratio == 4)
*sh = 4;
else if ((hratio == 4 && vratio == 2) ||
(hratio == 2 && vratio == 4))
*sh = 3;
else if ((hratio == 4 && vratio == 1) ||
(hratio == 1 && vratio == 4) ||
(hratio == 2 && vratio == 2))
*sh = 2;
else if (hratio == 1 && vratio == 1)
*sh = 0;
else
*sh = 1;
}
void gsc_check_src_scale_info(struct gsc_variant *var,
struct gsc_frame *s_frame, u32 *wratio,
u32 tx, u32 ty, u32 *hratio)
{
int remainder = 0, walign, halign;
if (is_yuv420(s_frame->fmt->color)) {
walign = GSC_SC_ALIGN_4;
halign = GSC_SC_ALIGN_4;
} else if (is_yuv422(s_frame->fmt->color)) {
walign = GSC_SC_ALIGN_4;
halign = GSC_SC_ALIGN_2;
} else {
walign = GSC_SC_ALIGN_2;
halign = GSC_SC_ALIGN_2;
}
remainder = s_frame->crop.width % (*wratio * walign);
if (remainder) {
s_frame->crop.width -= remainder;
gsc_cal_prescaler_ratio(var, s_frame->crop.width, tx, wratio);
pr_info("cropped src width size is recalculated from %d to %d",
s_frame->crop.width + remainder, s_frame->crop.width);
}
remainder = s_frame->crop.height % (*hratio * halign);
if (remainder) {
s_frame->crop.height -= remainder;
gsc_cal_prescaler_ratio(var, s_frame->crop.height, ty, hratio);
pr_info("cropped src height size is recalculated from %d to %d",
s_frame->crop.height + remainder, s_frame->crop.height);
}
}
int gsc_enum_fmt(struct v4l2_fmtdesc *f)
{
const struct gsc_fmt *fmt;
fmt = find_fmt(NULL, NULL, f->index);
if (!fmt)
return -EINVAL;
f->pixelformat = fmt->pixelformat;
return 0;
}
static int get_plane_info(struct gsc_frame *frm, u32 addr, u32 *index, u32 *ret_addr)
{
if (frm->addr.y == addr) {
*index = 0;
*ret_addr = frm->addr.y;
} else if (frm->addr.cb == addr) {
*index = 1;
*ret_addr = frm->addr.cb;
} else if (frm->addr.cr == addr) {
*index = 2;
*ret_addr = frm->addr.cr;
} else {
pr_err("Plane address is wrong");
return -EINVAL;
}
return 0;
}
void gsc_set_prefbuf(struct gsc_dev *gsc, struct gsc_frame *frm)
{
u32 f_chk_addr, f_chk_len, s_chk_addr, s_chk_len;
f_chk_addr = f_chk_len = s_chk_addr = s_chk_len = 0;
f_chk_addr = frm->addr.y;
f_chk_len = frm->payload[0];
if (frm->fmt->num_planes == 2) {
s_chk_addr = frm->addr.cb;
s_chk_len = frm->payload[1];
} else if (frm->fmt->num_planes == 3) {
u32 low_addr, low_plane, mid_addr, mid_plane;
u32 high_addr, high_plane;
u32 t_min, t_max;
t_min = min3(frm->addr.y, frm->addr.cb, frm->addr.cr);
if (get_plane_info(frm, t_min, &low_plane, &low_addr))
return;
t_max = max3(frm->addr.y, frm->addr.cb, frm->addr.cr);
if (get_plane_info(frm, t_max, &high_plane, &high_addr))
return;
mid_plane = 3 - (low_plane + high_plane);
if (mid_plane == 0)
mid_addr = frm->addr.y;
else if (mid_plane == 1)
mid_addr = frm->addr.cb;
else if (mid_plane == 2)
mid_addr = frm->addr.cr;
else
return;
f_chk_addr = low_addr;
if (mid_addr + frm->payload[mid_plane] - low_addr >
high_addr + frm->payload[high_plane] - mid_addr) {
f_chk_len = frm->payload[low_plane];
s_chk_addr = mid_addr;
s_chk_len = high_addr +
frm->payload[high_plane] - mid_addr;
} else {
f_chk_len = mid_addr +
frm->payload[mid_plane] - low_addr;
s_chk_addr = high_addr;
s_chk_len = frm->payload[high_plane];
}
}
pr_debug("f_addr = 0x%08x, f_len = %d, s_addr = 0x%08x, s_len = %d\n",
f_chk_addr, f_chk_len, s_chk_addr, s_chk_len);
}
int gsc_try_fmt_mplane(struct gsc_ctx *ctx, struct v4l2_format *f)
{
struct gsc_dev *gsc = ctx->gsc_dev;
struct gsc_variant *variant = gsc->variant;
struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
const struct gsc_fmt *fmt;
u32 max_w, max_h, mod_x, mod_y;
u32 min_w, min_h, tmp_w, tmp_h;
int i;
pr_debug("user put w: %d, h: %d", pix_mp->width, pix_mp->height);
fmt = find_fmt(&pix_mp->pixelformat, NULL, 0);
if (!fmt) {
pr_err("pixelformat format (0x%X) invalid\n",
pix_mp->pixelformat);
return -EINVAL;
}
if (pix_mp->field == V4L2_FIELD_ANY)
pix_mp->field = V4L2_FIELD_NONE;
else if (pix_mp->field != V4L2_FIELD_NONE) {
pr_debug("Not supported field order(%d)\n", pix_mp->field);
return -EINVAL;
}
max_w = variant->pix_max->target_rot_dis_w;
max_h = variant->pix_max->target_rot_dis_h;
mod_x = ffs(variant->pix_align->org_w) - 1;
if (is_yuv420(fmt->color))
mod_y = ffs(variant->pix_align->org_h) - 1;
else
mod_y = ffs(variant->pix_align->org_h) - 2;
if (V4L2_TYPE_IS_OUTPUT(f->type)) {
min_w = variant->pix_min->org_w;
min_h = variant->pix_min->org_h;
} else {
min_w = variant->pix_min->target_rot_dis_w;
min_h = variant->pix_min->target_rot_dis_h;
pix_mp->colorspace = ctx->out_colorspace;
}
pr_debug("mod_x: %d, mod_y: %d, max_w: %d, max_h = %d",
mod_x, mod_y, max_w, max_h);
/* To check if image size is modified to adjust parameter against
hardware abilities */
tmp_w = pix_mp->width;
tmp_h = pix_mp->height;
v4l_bound_align_image(&pix_mp->width, min_w, max_w, mod_x,
&pix_mp->height, min_h, max_h, mod_y, 0);
if (tmp_w != pix_mp->width || tmp_h != pix_mp->height)
pr_debug("Image size has been modified from %dx%d to %dx%d\n",
tmp_w, tmp_h, pix_mp->width, pix_mp->height);
pix_mp->num_planes = fmt->num_planes;
if (V4L2_TYPE_IS_OUTPUT(f->type))
ctx->out_colorspace = pix_mp->colorspace;
for (i = 0; i < pix_mp->num_planes; ++i) {
struct v4l2_plane_pix_format *plane_fmt = &pix_mp->plane_fmt[i];
u32 bpl = plane_fmt->bytesperline;
if (fmt->num_comp == 1 && /* Packed */
(bpl == 0 || (bpl * 8 / fmt->depth[i]) < pix_mp->width))
bpl = pix_mp->width * fmt->depth[i] / 8;
if (fmt->num_comp > 1 && /* Planar */
(bpl == 0 || bpl < pix_mp->width))
bpl = pix_mp->width;
if (i != 0 && fmt->num_comp == 3)
bpl /= 2;
plane_fmt->bytesperline = bpl;
plane_fmt->sizeimage = max(pix_mp->width * pix_mp->height *
fmt->depth[i] / 8,
plane_fmt->sizeimage);
pr_debug("[%d]: bpl: %d, sizeimage: %d",
i, bpl, pix_mp->plane_fmt[i].sizeimage);
}
return 0;
}
int gsc_g_fmt_mplane(struct gsc_ctx *ctx, struct v4l2_format *f)
{
struct gsc_frame *frame;
struct v4l2_pix_format_mplane *pix_mp;
int i;
frame = ctx_get_frame(ctx, f->type);
if (IS_ERR(frame))
return PTR_ERR(frame);
pix_mp = &f->fmt.pix_mp;
pix_mp->width = frame->f_width;
pix_mp->height = frame->f_height;
pix_mp->field = V4L2_FIELD_NONE;
pix_mp->pixelformat = frame->fmt->pixelformat;
pix_mp->num_planes = frame->fmt->num_planes;
pix_mp->colorspace = ctx->out_colorspace;
for (i = 0; i < pix_mp->num_planes; ++i) {
pix_mp->plane_fmt[i].bytesperline = (frame->f_width *
frame->fmt->depth[i]) / 8;
pix_mp->plane_fmt[i].sizeimage =
pix_mp->plane_fmt[i].bytesperline * frame->f_height;
}
return 0;
}
void gsc_check_crop_change(u32 tmp_w, u32 tmp_h, u32 *w, u32 *h)
{
if (tmp_w != *w || tmp_h != *h) {
pr_info("Cropped size has been modified from %dx%d to %dx%d",
*w, *h, tmp_w, tmp_h);
*w = tmp_w;
*h = tmp_h;
}
}
int gsc_try_selection(struct gsc_ctx *ctx, struct v4l2_selection *s)
{
struct gsc_frame *f;
struct gsc_dev *gsc = ctx->gsc_dev;
struct gsc_variant *variant = gsc->variant;
u32 mod_x = 0, mod_y = 0, tmp_w, tmp_h;
u32 min_w, min_h, max_w, max_h;
if (s->r.top < 0 || s->r.left < 0) {
pr_err("doesn't support negative values for top & left\n");
return -EINVAL;
}
pr_debug("user put w: %d, h: %d", s->r.width, s->r.height);
if (s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
f = &ctx->d_frame;
else if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
f = &ctx->s_frame;
else
return -EINVAL;
max_w = f->f_width;
max_h = f->f_height;
tmp_w = s->r.width;
tmp_h = s->r.height;
if (V4L2_TYPE_IS_OUTPUT(s->type)) {
if ((is_yuv422(f->fmt->color) && f->fmt->num_comp == 1) ||
is_rgb(f->fmt->color))
min_w = 32;
else
min_w = 64;
if ((is_yuv422(f->fmt->color) && f->fmt->num_comp == 3) ||
is_yuv420(f->fmt->color))
min_h = 32;
else
min_h = 16;
} else {
if (is_yuv420(f->fmt->color) || is_yuv422(f->fmt->color))
mod_x = ffs(variant->pix_align->target_w) - 1;
if (is_yuv420(f->fmt->color))
mod_y = ffs(variant->pix_align->target_h) - 1;
if (ctx->gsc_ctrls.rotate->val == 90 ||
ctx->gsc_ctrls.rotate->val == 270) {
max_w = f->f_height;
max_h = f->f_width;
min_w = variant->pix_min->target_rot_en_w;
min_h = variant->pix_min->target_rot_en_h;
tmp_w = s->r.height;
tmp_h = s->r.width;
} else {
min_w = variant->pix_min->target_rot_dis_w;
min_h = variant->pix_min->target_rot_dis_h;
}
}
pr_debug("mod_x: %d, mod_y: %d, min_w: %d, min_h = %d",
mod_x, mod_y, min_w, min_h);
pr_debug("tmp_w : %d, tmp_h : %d", tmp_w, tmp_h);
v4l_bound_align_image(&tmp_w, min_w, max_w, mod_x,
&tmp_h, min_h, max_h, mod_y, 0);
if (V4L2_TYPE_IS_CAPTURE(s->type) &&
(ctx->gsc_ctrls.rotate->val == 90 ||
ctx->gsc_ctrls.rotate->val == 270))
gsc_check_crop_change(tmp_h, tmp_w,
&s->r.width, &s->r.height);
else
gsc_check_crop_change(tmp_w, tmp_h,
&s->r.width, &s->r.height);
/* adjust left/top if cropping rectangle is out of bounds */
/* Need to add code to algin left value with 2's multiple */
if (s->r.left + tmp_w > max_w)
s->r.left = max_w - tmp_w;
if (s->r.top + tmp_h > max_h)
s->r.top = max_h - tmp_h;
if ((is_yuv420(f->fmt->color) || is_yuv422(f->fmt->color)) &&
s->r.left & 1)
s->r.left -= 1;
pr_debug("Aligned l:%d, t:%d, w:%d, h:%d, f_w: %d, f_h: %d",
s->r.left, s->r.top, s->r.width, s->r.height, max_w, max_h);
return 0;
}
int gsc_check_scaler_ratio(struct gsc_variant *var, int sw, int sh, int dw,
int dh, int rot, int out_path)
{
int tmp_w, tmp_h, sc_down_max;
if (out_path == GSC_DMA)
sc_down_max = var->sc_down_max;
else
sc_down_max = var->local_sc_down;
if (rot == 90 || rot == 270) {
tmp_w = dh;
tmp_h = dw;
} else {
tmp_w = dw;
tmp_h = dh;
}
if ((sw / tmp_w) > sc_down_max ||
(sh / tmp_h) > sc_down_max ||
(tmp_w / sw) > var->sc_up_max ||
(tmp_h / sh) > var->sc_up_max)
return -EINVAL;
return 0;
}
int gsc_set_scaler_info(struct gsc_ctx *ctx)
{
struct gsc_scaler *sc = &ctx->scaler;
struct gsc_frame *s_frame = &ctx->s_frame;
struct gsc_frame *d_frame = &ctx->d_frame;
struct gsc_variant *variant = ctx->gsc_dev->variant;
struct device *dev = &ctx->gsc_dev->pdev->dev;
int tx, ty;
int ret;
ret = gsc_check_scaler_ratio(variant, s_frame->crop.width,
s_frame->crop.height, d_frame->crop.width, d_frame->crop.height,
ctx->gsc_ctrls.rotate->val, ctx->out_path);
if (ret) {
pr_err("out of scaler range");
return ret;
}
if (ctx->gsc_ctrls.rotate->val == 90 ||
ctx->gsc_ctrls.rotate->val == 270) {
ty = d_frame->crop.width;
tx = d_frame->crop.height;
} else {
tx = d_frame->crop.width;
ty = d_frame->crop.height;
}
if (tx <= 0 || ty <= 0) {
dev_err(dev, "Invalid target size: %dx%d", tx, ty);
return -EINVAL;
}
ret = gsc_cal_prescaler_ratio(variant, s_frame->crop.width,
tx, &sc->pre_hratio);
if (ret) {
pr_err("Horizontal scale ratio is out of range");
return ret;
}
ret = gsc_cal_prescaler_ratio(variant, s_frame->crop.height,
ty, &sc->pre_vratio);
if (ret) {
pr_err("Vertical scale ratio is out of range");
return ret;
}
gsc_check_src_scale_info(variant, s_frame, &sc->pre_hratio,
tx, ty, &sc->pre_vratio);
gsc_get_prescaler_shfactor(sc->pre_hratio, sc->pre_vratio,
&sc->pre_shfactor);
sc->main_hratio = (s_frame->crop.width << 16) / tx;
sc->main_vratio = (s_frame->crop.height << 16) / ty;
pr_debug("scaler input/output size : sx = %d, sy = %d, tx = %d, ty = %d",
s_frame->crop.width, s_frame->crop.height, tx, ty);
pr_debug("scaler ratio info : pre_shfactor : %d, pre_h : %d",
sc->pre_shfactor, sc->pre_hratio);
pr_debug("pre_v :%d, main_h : %d, main_v : %d",
sc->pre_vratio, sc->main_hratio, sc->main_vratio);
return 0;
}
static int __gsc_s_ctrl(struct gsc_ctx *ctx, struct v4l2_ctrl *ctrl)
{
struct gsc_dev *gsc = ctx->gsc_dev;
struct gsc_variant *variant = gsc->variant;
unsigned int flags = GSC_DST_FMT | GSC_SRC_FMT;
int ret = 0;
if (ctrl->flags & V4L2_CTRL_FLAG_INACTIVE)
return 0;
switch (ctrl->id) {
case V4L2_CID_HFLIP:
ctx->hflip = ctrl->val;
break;
case V4L2_CID_VFLIP:
ctx->vflip = ctrl->val;
break;
case V4L2_CID_ROTATE:
if ((ctx->state & flags) == flags) {
ret = gsc_check_scaler_ratio(variant,
ctx->s_frame.crop.width,
ctx->s_frame.crop.height,
ctx->d_frame.crop.width,
ctx->d_frame.crop.height,
ctx->gsc_ctrls.rotate->val,
ctx->out_path);
if (ret)
return -EINVAL;
}
ctx->rotation = ctrl->val;
break;
case V4L2_CID_ALPHA_COMPONENT:
ctx->d_frame.alpha = ctrl->val;
break;
}
ctx->state |= GSC_PARAMS;
return 0;
}
static int gsc_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct gsc_ctx *ctx = ctrl_to_ctx(ctrl);
unsigned long flags;
int ret;
spin_lock_irqsave(&ctx->gsc_dev->slock, flags);
ret = __gsc_s_ctrl(ctx, ctrl);
spin_unlock_irqrestore(&ctx->gsc_dev->slock, flags);
return ret;
}
static const struct v4l2_ctrl_ops gsc_ctrl_ops = {
.s_ctrl = gsc_s_ctrl,
};
int gsc_ctrls_create(struct gsc_ctx *ctx)
{
if (ctx->ctrls_rdy) {
pr_err("Control handler of this context was created already");
return 0;
}
v4l2_ctrl_handler_init(&ctx->ctrl_handler, GSC_MAX_CTRL_NUM);
ctx->gsc_ctrls.rotate = v4l2_ctrl_new_std(&ctx->ctrl_handler,
&gsc_ctrl_ops, V4L2_CID_ROTATE, 0, 270, 90, 0);
ctx->gsc_ctrls.hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler,
&gsc_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0);
ctx->gsc_ctrls.vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler,
&gsc_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0);
ctx->gsc_ctrls.global_alpha = v4l2_ctrl_new_std(&ctx->ctrl_handler,
&gsc_ctrl_ops, V4L2_CID_ALPHA_COMPONENT, 0, 255, 1, 0);
ctx->ctrls_rdy = ctx->ctrl_handler.error == 0;
if (ctx->ctrl_handler.error) {
int err = ctx->ctrl_handler.error;
v4l2_ctrl_handler_free(&ctx->ctrl_handler);
pr_err("Failed to create G-Scaler control handlers");
return err;
}
return 0;
}
void gsc_ctrls_delete(struct gsc_ctx *ctx)
{
if (ctx->ctrls_rdy) {
v4l2_ctrl_handler_free(&ctx->ctrl_handler);
ctx->ctrls_rdy = false;
}
}
/* The color format (num_comp, num_planes) must be already configured. */
int gsc_prepare_addr(struct gsc_ctx *ctx, struct vb2_buffer *vb,
struct gsc_frame *frame, struct gsc_addr *addr)
{
int ret = 0;
u32 pix_size;
if ((vb == NULL) || (frame == NULL))
return -EINVAL;
pix_size = frame->f_width * frame->f_height;
pr_debug("num_planes= %d, num_comp= %d, pix_size= %d",
frame->fmt->num_planes, frame->fmt->num_comp, pix_size);
addr->y = vb2_dma_contig_plane_dma_addr(vb, 0);
if (frame->fmt->num_planes == 1) {
switch (frame->fmt->num_comp) {
case 1:
addr->cb = 0;
addr->cr = 0;
break;
case 2:
/* decompose Y into Y/Cb */
addr->cb = (dma_addr_t)(addr->y + pix_size);
addr->cr = 0;
break;
case 3:
/* decompose Y into Y/Cb/Cr */
addr->cb = (dma_addr_t)(addr->y + pix_size);
if (GSC_YUV420 == frame->fmt->color)
addr->cr = (dma_addr_t)(addr->cb
+ (pix_size >> 2));
else /* 422 */
addr->cr = (dma_addr_t)(addr->cb
+ (pix_size >> 1));
break;
default:
pr_err("Invalid the number of color planes");
return -EINVAL;
}
} else {
if (frame->fmt->num_planes >= 2)
addr->cb = vb2_dma_contig_plane_dma_addr(vb, 1);
if (frame->fmt->num_planes == 3)
addr->cr = vb2_dma_contig_plane_dma_addr(vb, 2);
}
if ((frame->fmt->pixelformat == V4L2_PIX_FMT_VYUY) ||
(frame->fmt->pixelformat == V4L2_PIX_FMT_YVYU) ||
(frame->fmt->pixelformat == V4L2_PIX_FMT_YVU420) ||
(frame->fmt->pixelformat == V4L2_PIX_FMT_YVU420M))
swap(addr->cb, addr->cr);
pr_debug("ADDR: y= %pad cb= %pad cr= %pad ret= %d",
&addr->y, &addr->cb, &addr->cr, ret);
return ret;
}
static irqreturn_t gsc_irq_handler(int irq, void *priv)
{
struct gsc_dev *gsc = priv;
struct gsc_ctx *ctx;
int gsc_irq;
gsc_irq = gsc_hw_get_irq_status(gsc);
gsc_hw_clear_irq(gsc, gsc_irq);
if (gsc_irq == GSC_IRQ_OVERRUN) {
pr_err("Local path input over-run interrupt has occurred!\n");
return IRQ_HANDLED;
}
spin_lock(&gsc->slock);
if (test_and_clear_bit(ST_M2M_PEND, &gsc->state)) {
gsc_hw_enable_control(gsc, false);
if (test_and_clear_bit(ST_M2M_SUSPENDING, &gsc->state)) {
set_bit(ST_M2M_SUSPENDED, &gsc->state);
wake_up(&gsc->irq_queue);
goto isr_unlock;
}
ctx = v4l2_m2m_get_curr_priv(gsc->m2m.m2m_dev);
if (!ctx || !ctx->m2m_ctx)
goto isr_unlock;
spin_unlock(&gsc->slock);
gsc_m2m_job_finish(ctx, VB2_BUF_STATE_DONE);
/* wake_up job_abort, stop_streaming */
if (ctx->state & GSC_CTX_STOP_REQ) {
ctx->state &= ~GSC_CTX_STOP_REQ;
wake_up(&gsc->irq_queue);
}
return IRQ_HANDLED;
}
isr_unlock:
spin_unlock(&gsc->slock);
return IRQ_HANDLED;
}
static struct gsc_pix_max gsc_v_100_max = {
.org_scaler_bypass_w = 8192,
.org_scaler_bypass_h = 8192,
.org_scaler_input_w = 4800,
.org_scaler_input_h = 3344,
.real_rot_dis_w = 4800,
.real_rot_dis_h = 3344,
.real_rot_en_w = 2047,
.real_rot_en_h = 2047,
.target_rot_dis_w = 4800,
.target_rot_dis_h = 3344,
.target_rot_en_w = 2016,
.target_rot_en_h = 2016,
};
static struct gsc_pix_max gsc_v_5250_max = {
.org_scaler_bypass_w = 8192,
.org_scaler_bypass_h = 8192,
.org_scaler_input_w = 4800,
.org_scaler_input_h = 3344,
.real_rot_dis_w = 4800,
.real_rot_dis_h = 3344,
.real_rot_en_w = 2016,
.real_rot_en_h = 2016,
.target_rot_dis_w = 4800,
.target_rot_dis_h = 3344,
.target_rot_en_w = 2016,
.target_rot_en_h = 2016,
};
static struct gsc_pix_max gsc_v_5420_max = {
.org_scaler_bypass_w = 8192,
.org_scaler_bypass_h = 8192,
.org_scaler_input_w = 4800,
.org_scaler_input_h = 3344,
.real_rot_dis_w = 4800,
.real_rot_dis_h = 3344,
.real_rot_en_w = 2048,
.real_rot_en_h = 2048,
.target_rot_dis_w = 4800,
.target_rot_dis_h = 3344,
.target_rot_en_w = 2016,
.target_rot_en_h = 2016,
};
static struct gsc_pix_max gsc_v_5433_max = {
.org_scaler_bypass_w = 8192,
.org_scaler_bypass_h = 8192,
.org_scaler_input_w = 4800,
.org_scaler_input_h = 3344,
.real_rot_dis_w = 4800,
.real_rot_dis_h = 3344,
.real_rot_en_w = 2047,
.real_rot_en_h = 2047,
.target_rot_dis_w = 4800,
.target_rot_dis_h = 3344,
.target_rot_en_w = 2016,
.target_rot_en_h = 2016,
};
static struct gsc_pix_min gsc_v_100_min = {
.org_w = 64,
.org_h = 32,
.real_w = 64,
.real_h = 32,
.target_rot_dis_w = 64,
.target_rot_dis_h = 32,
.target_rot_en_w = 32,
.target_rot_en_h = 16,
};
static struct gsc_pix_align gsc_v_100_align = {
.org_h = 16,
.org_w = 16, /* yuv420 : 16, others : 8 */
.offset_h = 2, /* yuv420/422 : 2, others : 1 */
.real_w = 16, /* yuv420/422 : 4~16, others : 2~8 */
.real_h = 16, /* yuv420 : 4~16, others : 1 */
.target_w = 2, /* yuv420/422 : 2, others : 1 */
.target_h = 2, /* yuv420 : 2, others : 1 */
};
static struct gsc_variant gsc_v_100_variant = {
.pix_max = &gsc_v_100_max,
.pix_min = &gsc_v_100_min,
.pix_align = &gsc_v_100_align,
.in_buf_cnt = 32,
.out_buf_cnt = 32,
.sc_up_max = 8,
.sc_down_max = 16,
.poly_sc_down_max = 4,
.pre_sc_down_max = 4,
.local_sc_down = 2,
};
static struct gsc_variant gsc_v_5250_variant = {
.pix_max = &gsc_v_5250_max,
.pix_min = &gsc_v_100_min,
.pix_align = &gsc_v_100_align,
.in_buf_cnt = 32,
.out_buf_cnt = 32,
.sc_up_max = 8,
.sc_down_max = 16,
.poly_sc_down_max = 4,
.pre_sc_down_max = 4,
.local_sc_down = 2,
};
static struct gsc_variant gsc_v_5420_variant = {
.pix_max = &gsc_v_5420_max,
.pix_min = &gsc_v_100_min,
.pix_align = &gsc_v_100_align,
.in_buf_cnt = 32,
.out_buf_cnt = 32,
.sc_up_max = 8,
.sc_down_max = 16,
.poly_sc_down_max = 4,
.pre_sc_down_max = 4,
.local_sc_down = 2,
};
static struct gsc_variant gsc_v_5433_variant = {
.pix_max = &gsc_v_5433_max,
.pix_min = &gsc_v_100_min,
.pix_align = &gsc_v_100_align,
.in_buf_cnt = 32,
.out_buf_cnt = 32,
.sc_up_max = 8,
.sc_down_max = 16,
.poly_sc_down_max = 4,
.pre_sc_down_max = 4,
.local_sc_down = 2,
};
static struct gsc_driverdata gsc_v_100_drvdata = {
.variant = {
[0] = &gsc_v_100_variant,
[1] = &gsc_v_100_variant,
[2] = &gsc_v_100_variant,
[3] = &gsc_v_100_variant,
},
.num_entities = 4,
.clk_names = { "gscl" },
.num_clocks = 1,
};
static struct gsc_driverdata gsc_v_5250_drvdata = {
.variant = {
[0] = &gsc_v_5250_variant,
[1] = &gsc_v_5250_variant,
[2] = &gsc_v_5250_variant,
[3] = &gsc_v_5250_variant,
},
.num_entities = 4,
.clk_names = { "gscl" },
.num_clocks = 1,
};
static struct gsc_driverdata gsc_v_5420_drvdata = {
.variant = {
[0] = &gsc_v_5420_variant,
[1] = &gsc_v_5420_variant,
},
.num_entities = 2,
.clk_names = { "gscl" },
.num_clocks = 1,
};
static struct gsc_driverdata gsc_5433_drvdata = {
.variant = {
[0] = &gsc_v_5433_variant,
[1] = &gsc_v_5433_variant,
[2] = &gsc_v_5433_variant,
},
.num_entities = 3,
.clk_names = { "pclk", "aclk", "aclk_xiu", "aclk_gsclbend" },
.num_clocks = 4,
};
static const struct of_device_id exynos_gsc_match[] = {
{
.compatible = "samsung,exynos5250-gsc",
.data = &gsc_v_5250_drvdata,
},
{
.compatible = "samsung,exynos5420-gsc",
.data = &gsc_v_5420_drvdata,
},
{
.compatible = "samsung,exynos5433-gsc",
.data = &gsc_5433_drvdata,
},
{
.compatible = "samsung,exynos5-gsc",
.data = &gsc_v_100_drvdata,
},
{},
};
MODULE_DEVICE_TABLE(of, exynos_gsc_match);
static int gsc_probe(struct platform_device *pdev)
{
struct gsc_dev *gsc;
struct resource *res;
struct device *dev = &pdev->dev;
const struct gsc_driverdata *drv_data = of_device_get_match_data(dev);
int ret;
int i;
gsc = devm_kzalloc(dev, sizeof(struct gsc_dev), GFP_KERNEL);
if (!gsc)
return -ENOMEM;
ret = of_alias_get_id(pdev->dev.of_node, "gsc");
if (ret < 0)
return ret;
if (drv_data == &gsc_v_100_drvdata)
dev_info(dev, "compatible 'exynos5-gsc' is deprecated\n");
gsc->id = ret;
if (gsc->id >= drv_data->num_entities) {
dev_err(dev, "Invalid platform device id: %d\n", gsc->id);
return -EINVAL;
}
gsc->num_clocks = drv_data->num_clocks;
gsc->variant = drv_data->variant[gsc->id];
gsc->pdev = pdev;
init_waitqueue_head(&gsc->irq_queue);
spin_lock_init(&gsc->slock);
mutex_init(&gsc->lock);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
gsc->regs = devm_ioremap_resource(dev, res);
if (IS_ERR(gsc->regs))
return PTR_ERR(gsc->regs);
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!res) {
dev_err(dev, "failed to get IRQ resource\n");
return -ENXIO;
}
for (i = 0; i < gsc->num_clocks; i++) {
gsc->clock[i] = devm_clk_get(dev, drv_data->clk_names[i]);
if (IS_ERR(gsc->clock[i])) {
dev_err(dev, "failed to get clock: %s\n",
drv_data->clk_names[i]);
return PTR_ERR(gsc->clock[i]);
}
}
for (i = 0; i < gsc->num_clocks; i++) {
ret = clk_prepare_enable(gsc->clock[i]);
if (ret) {
dev_err(dev, "clock prepare failed for clock: %s\n",
drv_data->clk_names[i]);
while (--i >= 0)
clk_disable_unprepare(gsc->clock[i]);
return ret;
}
}
ret = devm_request_irq(dev, res->start, gsc_irq_handler,
0, pdev->name, gsc);
if (ret) {
dev_err(dev, "failed to install irq (%d)\n", ret);
goto err_clk;
}
ret = v4l2_device_register(dev, &gsc->v4l2_dev);
if (ret)
goto err_clk;
ret = gsc_register_m2m_device(gsc);
if (ret)
goto err_v4l2;
platform_set_drvdata(pdev, gsc);
gsc_hw_set_sw_reset(gsc);
gsc_wait_reset(gsc);
vb2_dma_contig_set_max_seg_size(dev, DMA_BIT_MASK(32));
dev_dbg(dev, "gsc-%d registered successfully\n", gsc->id);
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
return 0;
err_v4l2:
v4l2_device_unregister(&gsc->v4l2_dev);
err_clk:
for (i = gsc->num_clocks - 1; i >= 0; i--)
clk_disable_unprepare(gsc->clock[i]);
return ret;
}
static int gsc_remove(struct platform_device *pdev)
{
struct gsc_dev *gsc = platform_get_drvdata(pdev);
int i;
pm_runtime_get_sync(&pdev->dev);
gsc_unregister_m2m_device(gsc);
v4l2_device_unregister(&gsc->v4l2_dev);
vb2_dma_contig_clear_max_seg_size(&pdev->dev);
for (i = 0; i < gsc->num_clocks; i++)
clk_disable_unprepare(gsc->clock[i]);
pm_runtime_put_noidle(&pdev->dev);
pm_runtime_disable(&pdev->dev);
dev_dbg(&pdev->dev, "%s driver unloaded\n", pdev->name);
return 0;
}
#ifdef CONFIG_PM
static int gsc_m2m_suspend(struct gsc_dev *gsc)
{
unsigned long flags;
int timeout;
spin_lock_irqsave(&gsc->slock, flags);
if (!gsc_m2m_pending(gsc)) {
spin_unlock_irqrestore(&gsc->slock, flags);
return 0;
}
clear_bit(ST_M2M_SUSPENDED, &gsc->state);
set_bit(ST_M2M_SUSPENDING, &gsc->state);
spin_unlock_irqrestore(&gsc->slock, flags);
timeout = wait_event_timeout(gsc->irq_queue,
test_bit(ST_M2M_SUSPENDED, &gsc->state),
GSC_SHUTDOWN_TIMEOUT);
clear_bit(ST_M2M_SUSPENDING, &gsc->state);
return timeout == 0 ? -EAGAIN : 0;
}
static void gsc_m2m_resume(struct gsc_dev *gsc)
{
struct gsc_ctx *ctx;
unsigned long flags;
spin_lock_irqsave(&gsc->slock, flags);
/* Clear for full H/W setup in first run after resume */
ctx = gsc->m2m.ctx;
gsc->m2m.ctx = NULL;
spin_unlock_irqrestore(&gsc->slock, flags);
if (test_and_clear_bit(ST_M2M_SUSPENDED, &gsc->state))
gsc_m2m_job_finish(ctx, VB2_BUF_STATE_ERROR);
}
static int gsc_runtime_resume(struct device *dev)
{
struct gsc_dev *gsc = dev_get_drvdata(dev);
int ret = 0;
int i;
pr_debug("gsc%d: state: 0x%lx\n", gsc->id, gsc->state);
for (i = 0; i < gsc->num_clocks; i++) {
ret = clk_prepare_enable(gsc->clock[i]);
if (ret) {
while (--i >= 0)
clk_disable_unprepare(gsc->clock[i]);
return ret;
}
}
gsc_hw_set_sw_reset(gsc);
gsc_wait_reset(gsc);
gsc_m2m_resume(gsc);
return 0;
}
static int gsc_runtime_suspend(struct device *dev)
{
struct gsc_dev *gsc = dev_get_drvdata(dev);
int ret = 0;
int i;
ret = gsc_m2m_suspend(gsc);
if (ret)
return ret;
for (i = gsc->num_clocks - 1; i >= 0; i--)
clk_disable_unprepare(gsc->clock[i]);
pr_debug("gsc%d: state: 0x%lx\n", gsc->id, gsc->state);
return ret;
}
#endif
static const struct dev_pm_ops gsc_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
pm_runtime_force_resume)
SET_RUNTIME_PM_OPS(gsc_runtime_suspend, gsc_runtime_resume, NULL)
};
static struct platform_driver gsc_driver = {
.probe = gsc_probe,
.remove = gsc_remove,
.driver = {
.name = GSC_MODULE_NAME,
.pm = &gsc_pm_ops,
.of_match_table = exynos_gsc_match,
}
};
module_platform_driver(gsc_driver);
MODULE_AUTHOR("Hyunwong Kim <khw0178.kim@samsung.com>");
MODULE_DESCRIPTION("Samsung EXYNOS5 Soc series G-Scaler driver");
MODULE_LICENSE("GPL");
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