iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

media: sun6i-csi: Refactor main driver data structures

Browse Source 
Merge contents of structs sun6i_csi and sun6i_csi_dev into a main
sun6i_csi_device structure holding a sun6i_csi_v4l2 struct for things
related to v4l2, as well as the already-existing sun6i_csi_video and
sun6i_csi_config which are left unchanged.

This mostly simplifies accessing stuff by having a single main
structure accessible to every part of the code instead of a private
definition.

Also solve some kerneldoc warnings by describing return codes while
at it.

No functional change is intended in this commit, variables are just
moved around (cosmetics).

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Reviewed-by: Maxime Ripard <maxime@cerno.tech>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Paul Kocialkowski 2022-09-07 12:00:38 +02:00 committed by Mauro Carvalho Chehab
parent 6f4d0849be
commit 0b11253f36
4 changed files with 229 additions and 227 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

346
drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
View File

@ -27,37 +27,20 @@
#include "sun6i_csi.h"
#include "sun6i_csi_reg.h"
struct sun6i_csi_dev {
struct sun6i_csi csi;
struct device *dev;
struct regmap *regmap;
struct clk *clk_mod;
struct clk *clk_ram;
struct reset_control *rstc_bus;
int planar_offset[3];
};
static inline struct sun6i_csi_dev *sun6i_csi_to_dev(struct sun6i_csi *csi)
{
return container_of(csi, struct sun6i_csi_dev, csi);
}
/* TODO add 10&12 bit YUV, RGB support */
bool sun6i_csi_is_format_supported(struct sun6i_csi *csi,
bool sun6i_csi_is_format_supported(struct sun6i_csi_device *csi_dev,
u32 pixformat, u32 mbus_code)
{
struct sun6i_csi_dev *sdev = sun6i_csi_to_dev(csi);
struct sun6i_csi_v4l2 *v4l2 = &csi_dev->v4l2;
/*
* Some video receivers have the ability to be compatible with
* 8bit and 16bit bus width.
* Identify the media bus format from device tree.
*/
if ((sdev->csi.v4l2_ep.bus_type == V4L2_MBUS_PARALLEL
|| sdev->csi.v4l2_ep.bus_type == V4L2_MBUS_BT656)
&& sdev->csi.v4l2_ep.bus.parallel.bus_width == 16) {
if ((v4l2->v4l2_ep.bus_type == V4L2_MBUS_PARALLEL
|| v4l2->v4l2_ep.bus_type == V4L2_MBUS_BT656)
&& v4l2->v4l2_ep.bus.parallel.bus_width == 16) {
switch (pixformat) {
case V4L2_PIX_FMT_NV12_16L16:
case V4L2_PIX_FMT_NV12:
@ -74,13 +57,14 @@ bool sun6i_csi_is_format_supported(struct sun6i_csi *csi,
case MEDIA_BUS_FMT_YVYU8_1X16:
return true;
default:
dev_dbg(sdev->dev, "Unsupported mbus code: 0x%x\n",
dev_dbg(csi_dev->dev,
"Unsupported mbus code: 0x%x\n",
mbus_code);
break;
}
break;
default:
dev_dbg(sdev->dev, "Unsupported pixformat: 0x%x\n",
dev_dbg(csi_dev->dev, "Unsupported pixformat: 0x%x\n",
pixformat);
break;
}
@ -137,7 +121,7 @@ bool sun6i_csi_is_format_supported(struct sun6i_csi *csi,
case MEDIA_BUS_FMT_YVYU8_2X8:
return true;
default:
dev_dbg(sdev->dev, "Unsupported mbus code: 0x%x\n",
dev_dbg(csi_dev->dev, "Unsupported mbus code: 0x%x\n",
mbus_code);
break;
}
@ -152,50 +136,50 @@ bool sun6i_csi_is_format_supported(struct sun6i_csi *csi,
return (mbus_code == MEDIA_BUS_FMT_JPEG_1X8);
default:
dev_dbg(sdev->dev, "Unsupported pixformat: 0x%x\n", pixformat);
dev_dbg(csi_dev->dev, "Unsupported pixformat: 0x%x\n",
pixformat);
break;
}
return false;
}
int sun6i_csi_set_power(struct sun6i_csi *csi, bool enable)
int sun6i_csi_set_power(struct sun6i_csi_device *csi_dev, bool enable)
{
struct sun6i_csi_dev *sdev = sun6i_csi_to_dev(csi);
struct device *dev = sdev->dev;
struct regmap *regmap = sdev->regmap;
struct device *dev = csi_dev->dev;
struct regmap *regmap = csi_dev->regmap;
int ret;
if (!enable) {
regmap_update_bits(regmap, CSI_EN_REG, CSI_EN_CSI_EN, 0);
clk_disable_unprepare(sdev->clk_ram);
clk_disable_unprepare(csi_dev->clk_ram);
if (of_device_is_compatible(dev->of_node,
"allwinner,sun50i-a64-csi"))
clk_rate_exclusive_put(sdev->clk_mod);
clk_disable_unprepare(sdev->clk_mod);
reset_control_assert(sdev->rstc_bus);
clk_rate_exclusive_put(csi_dev->clk_mod);
clk_disable_unprepare(csi_dev->clk_mod);
reset_control_assert(csi_dev->reset);
return 0;
}
ret = clk_prepare_enable(sdev->clk_mod);
ret = clk_prepare_enable(csi_dev->clk_mod);
if (ret) {
dev_err(sdev->dev, "Enable csi clk err %d\n", ret);
dev_err(csi_dev->dev, "Enable csi clk err %d\n", ret);
return ret;
}
if (of_device_is_compatible(dev->of_node, "allwinner,sun50i-a64-csi"))
clk_set_rate_exclusive(sdev->clk_mod, 300000000);
clk_set_rate_exclusive(csi_dev->clk_mod, 300000000);
ret = clk_prepare_enable(sdev->clk_ram);
ret = clk_prepare_enable(csi_dev->clk_ram);
if (ret) {
dev_err(sdev->dev, "Enable clk_dram_csi clk err %d\n", ret);
dev_err(csi_dev->dev, "Enable clk_dram_csi clk err %d\n", ret);
goto clk_mod_disable;
}
ret = reset_control_deassert(sdev->rstc_bus);
ret = reset_control_deassert(csi_dev->reset);
if (ret) {
dev_err(sdev->dev, "reset err %d\n", ret);
dev_err(csi_dev->dev, "reset err %d\n", ret);
goto clk_ram_disable;
}
@ -204,15 +188,15 @@ int sun6i_csi_set_power(struct sun6i_csi *csi, bool enable)
return 0;
clk_ram_disable:
clk_disable_unprepare(sdev->clk_ram);
clk_disable_unprepare(csi_dev->clk_ram);
clk_mod_disable:
if (of_device_is_compatible(dev->of_node, "allwinner,sun50i-a64-csi"))
clk_rate_exclusive_put(sdev->clk_mod);
clk_disable_unprepare(sdev->clk_mod);
clk_rate_exclusive_put(csi_dev->clk_mod);
clk_disable_unprepare(csi_dev->clk_mod);
return ret;
}
static enum csi_input_fmt get_csi_input_format(struct sun6i_csi_dev *sdev,
static enum csi_input_fmt get_csi_input_format(struct sun6i_csi_device *csi_dev,
u32 mbus_code, u32 pixformat)
{
/* non-YUV */
@ -230,12 +214,13 @@ static enum csi_input_fmt get_csi_input_format(struct sun6i_csi_dev *sdev,
}
/* not support YUV420 input format yet */
dev_dbg(sdev->dev, "Select YUV422 as default input format of CSI.\n");
dev_dbg(csi_dev->dev, "Select YUV422 as default input format of CSI.\n");
return CSI_INPUT_FORMAT_YUV422;
}
static enum csi_output_fmt get_csi_output_format(struct sun6i_csi_dev *sdev,
u32 pixformat, u32 field)
static enum csi_output_fmt
get_csi_output_format(struct sun6i_csi_device *csi_dev, u32 pixformat,
u32 field)
{
bool buf_interlaced = false;
@ -294,14 +279,14 @@ static enum csi_output_fmt get_csi_output_format(struct sun6i_csi_dev *sdev,
return buf_interlaced ? CSI_FRAME_RAW_8 : CSI_FIELD_RAW_8;
default:
dev_warn(sdev->dev, "Unsupported pixformat: 0x%x\n", pixformat);
dev_warn(csi_dev->dev, "Unsupported pixformat: 0x%x\n", pixformat);
break;
}
return CSI_FIELD_RAW_8;
}
static enum csi_input_seq get_csi_input_seq(struct sun6i_csi_dev *sdev,
static enum csi_input_seq get_csi_input_seq(struct sun6i_csi_device *csi_dev,
u32 mbus_code, u32 pixformat)
{
/* Input sequence does not apply to non-YUV formats */
@ -328,7 +313,7 @@ static enum csi_input_seq get_csi_input_seq(struct sun6i_csi_dev *sdev,
case MEDIA_BUS_FMT_YVYU8_2X8:
return CSI_INPUT_SEQ_YVYU;
default:
dev_warn(sdev->dev, "Unsupported mbus code: 0x%x\n",
dev_warn(csi_dev->dev, "Unsupported mbus code: 0x%x\n",
mbus_code);
break;
}
@ -350,7 +335,7 @@ static enum csi_input_seq get_csi_input_seq(struct sun6i_csi_dev *sdev,
case MEDIA_BUS_FMT_YVYU8_2X8:
return CSI_INPUT_SEQ_YUYV;
default:
dev_warn(sdev->dev, "Unsupported mbus code: 0x%x\n",
dev_warn(csi_dev->dev, "Unsupported mbus code: 0x%x\n",
mbus_code);
break;
}
@ -360,7 +345,7 @@ static enum csi_input_seq get_csi_input_seq(struct sun6i_csi_dev *sdev,
return CSI_INPUT_SEQ_YUYV;
default:
dev_warn(sdev->dev, "Unsupported pixformat: 0x%x, defaulting to YUYV\n",
dev_warn(csi_dev->dev, "Unsupported pixformat: 0x%x, defaulting to YUYV\n",
pixformat);
break;
}
@ -368,23 +353,23 @@ static enum csi_input_seq get_csi_input_seq(struct sun6i_csi_dev *sdev,
return CSI_INPUT_SEQ_YUYV;
}
static void sun6i_csi_setup_bus(struct sun6i_csi_dev *sdev)
static void sun6i_csi_setup_bus(struct sun6i_csi_device *csi_dev)
{
struct v4l2_fwnode_endpoint *endpoint = &sdev->csi.v4l2_ep;
struct sun6i_csi *csi = &sdev->csi;
struct v4l2_fwnode_endpoint *endpoint = &csi_dev->v4l2.v4l2_ep;
struct sun6i_csi_config *config = &csi_dev->config;
unsigned char bus_width;
u32 flags;
u32 cfg;
bool input_interlaced = false;
if (csi->config.field == V4L2_FIELD_INTERLACED
|| csi->config.field == V4L2_FIELD_INTERLACED_TB
|| csi->config.field == V4L2_FIELD_INTERLACED_BT)
if (config->field == V4L2_FIELD_INTERLACED
|| config->field == V4L2_FIELD_INTERLACED_TB
|| config->field == V4L2_FIELD_INTERLACED_BT)
input_interlaced = true;
bus_width = endpoint->bus.parallel.bus_width;
regmap_read(sdev->regmap, CSI_IF_CFG_REG, &cfg);
regmap_read(csi_dev->regmap, CSI_IF_CFG_REG, &cfg);
cfg &= ~(CSI_IF_CFG_CSI_IF_MASK | CSI_IF_CFG_MIPI_IF_MASK |
CSI_IF_CFG_IF_DATA_WIDTH_MASK |
@ -432,7 +417,7 @@ static void sun6i_csi_setup_bus(struct sun6i_csi_dev *sdev)
cfg |= CSI_IF_CFG_CLK_POL_FALLING_EDGE;
break;
default:
dev_warn(sdev->dev, "Unsupported bus type: %d\n",
dev_warn(csi_dev->dev, "Unsupported bus type: %d\n",
endpoint->bus_type);
break;
}
@ -450,54 +435,54 @@ static void sun6i_csi_setup_bus(struct sun6i_csi_dev *sdev)
case 16: /* No need to configure DATA_WIDTH for 16bit */
break;
default:
dev_warn(sdev->dev, "Unsupported bus width: %u\n", bus_width);
dev_warn(csi_dev->dev, "Unsupported bus width: %u\n", bus_width);
break;
}
regmap_write(sdev->regmap, CSI_IF_CFG_REG, cfg);
regmap_write(csi_dev->regmap, CSI_IF_CFG_REG, cfg);
}
static void sun6i_csi_set_format(struct sun6i_csi_dev *sdev)
static void sun6i_csi_set_format(struct sun6i_csi_device *csi_dev)
{
struct sun6i_csi *csi = &sdev->csi;
struct sun6i_csi_config *config = &csi_dev->config;
u32 cfg;
u32 val;
regmap_read(sdev->regmap, CSI_CH_CFG_REG, &cfg);
regmap_read(csi_dev->regmap, CSI_CH_CFG_REG, &cfg);
cfg &= ~(CSI_CH_CFG_INPUT_FMT_MASK |
CSI_CH_CFG_OUTPUT_FMT_MASK | CSI_CH_CFG_VFLIP_EN |
CSI_CH_CFG_HFLIP_EN | CSI_CH_CFG_FIELD_SEL_MASK |
CSI_CH_CFG_INPUT_SEQ_MASK);
val = get_csi_input_format(sdev, csi->config.code,
csi->config.pixelformat);
val = get_csi_input_format(csi_dev, config->code,
config->pixelformat);
cfg |= CSI_CH_CFG_INPUT_FMT(val);
val = get_csi_output_format(sdev, csi->config.pixelformat,
csi->config.field);
val = get_csi_output_format(csi_dev, config->pixelformat,
config->field);
cfg |= CSI_CH_CFG_OUTPUT_FMT(val);
val = get_csi_input_seq(sdev, csi->config.code,
csi->config.pixelformat);
val = get_csi_input_seq(csi_dev, config->code,
config->pixelformat);
cfg |= CSI_CH_CFG_INPUT_SEQ(val);
if (csi->config.field == V4L2_FIELD_TOP)
if (config->field == V4L2_FIELD_TOP)
cfg |= CSI_CH_CFG_FIELD_SEL_FIELD0;
else if (csi->config.field == V4L2_FIELD_BOTTOM)
else if (config->field == V4L2_FIELD_BOTTOM)
cfg |= CSI_CH_CFG_FIELD_SEL_FIELD1;
else
cfg |= CSI_CH_CFG_FIELD_SEL_BOTH;
regmap_write(sdev->regmap, CSI_CH_CFG_REG, cfg);
regmap_write(csi_dev->regmap, CSI_CH_CFG_REG, cfg);
}
static void sun6i_csi_set_window(struct sun6i_csi_dev *sdev)
static void sun6i_csi_set_window(struct sun6i_csi_device *csi_dev)
{
struct sun6i_csi_config *config = &sdev->csi.config;
struct sun6i_csi_config *config = &csi_dev->config;
u32 bytesperline_y;
u32 bytesperline_c;
int *planar_offset = sdev->planar_offset;
int *planar_offset = csi_dev->planar_offset;
u32 width = config->width;
u32 height = config->height;
u32 hor_len = width;
@ -507,7 +492,7 @@ static void sun6i_csi_set_window(struct sun6i_csi_dev *sdev)
case V4L2_PIX_FMT_YVYU:
case V4L2_PIX_FMT_UYVY:
case V4L2_PIX_FMT_VYUY:
dev_dbg(sdev->dev,
dev_dbg(csi_dev->dev,
"Horizontal length should be 2 times of width for packed YUV formats!\n");
hor_len = width * 2;
break;
@ -515,10 +500,10 @@ static void sun6i_csi_set_window(struct sun6i_csi_dev *sdev)
break;
}
regmap_write(sdev->regmap, CSI_CH_HSIZE_REG,
regmap_write(csi_dev->regmap, CSI_CH_HSIZE_REG,
CSI_CH_HSIZE_HOR_LEN(hor_len) |
CSI_CH_HSIZE_HOR_START(0));
regmap_write(sdev->regmap, CSI_CH_VSIZE_REG,
regmap_write(csi_dev->regmap, CSI_CH_VSIZE_REG,
CSI_CH_VSIZE_VER_LEN(height) |
CSI_CH_VSIZE_VER_START(0));
@ -550,7 +535,7 @@ static void sun6i_csi_set_window(struct sun6i_csi_dev *sdev)
bytesperline_c * height;
break;
default: /* raw */
dev_dbg(sdev->dev,
dev_dbg(csi_dev->dev,
"Calculating pixelformat(0x%x)'s bytesperline as a packed format\n",
config->pixelformat);
bytesperline_y = (sun6i_csi_get_bpp(config->pixelformat) *
@ -561,46 +546,42 @@ static void sun6i_csi_set_window(struct sun6i_csi_dev *sdev)
break;
}
regmap_write(sdev->regmap, CSI_CH_BUF_LEN_REG,
regmap_write(csi_dev->regmap, CSI_CH_BUF_LEN_REG,
CSI_CH_BUF_LEN_BUF_LEN_C(bytesperline_c) |
CSI_CH_BUF_LEN_BUF_LEN_Y(bytesperline_y));
}
int sun6i_csi_update_config(struct sun6i_csi *csi,
int sun6i_csi_update_config(struct sun6i_csi_device *csi_dev,
struct sun6i_csi_config *config)
{
struct sun6i_csi_dev *sdev = sun6i_csi_to_dev(csi);
if (!config)
return -EINVAL;
memcpy(&csi->config, config, sizeof(csi->config));
memcpy(&csi_dev->config, config, sizeof(csi_dev->config));
sun6i_csi_setup_bus(sdev);
sun6i_csi_set_format(sdev);
sun6i_csi_set_window(sdev);
sun6i_csi_setup_bus(csi_dev);
sun6i_csi_set_format(csi_dev);
sun6i_csi_set_window(csi_dev);
return 0;
}
void sun6i_csi_update_buf_addr(struct sun6i_csi *csi, dma_addr_t addr)
void sun6i_csi_update_buf_addr(struct sun6i_csi_device *csi_dev,
dma_addr_t addr)
{
struct sun6i_csi_dev *sdev = sun6i_csi_to_dev(csi);
regmap_write(sdev->regmap, CSI_CH_F0_BUFA_REG,
(addr + sdev->planar_offset[0]) >> 2);
if (sdev->planar_offset[1] != -1)
regmap_write(sdev->regmap, CSI_CH_F1_BUFA_REG,
(addr + sdev->planar_offset[1]) >> 2);
if (sdev->planar_offset[2] != -1)
regmap_write(sdev->regmap, CSI_CH_F2_BUFA_REG,
(addr + sdev->planar_offset[2]) >> 2);
regmap_write(csi_dev->regmap, CSI_CH_F0_BUFA_REG,
(addr + csi_dev->planar_offset[0]) >> 2);
if (csi_dev->planar_offset[1] != -1)
regmap_write(csi_dev->regmap, CSI_CH_F1_BUFA_REG,
(addr + csi_dev->planar_offset[1]) >> 2);
if (csi_dev->planar_offset[2] != -1)
regmap_write(csi_dev->regmap, CSI_CH_F2_BUFA_REG,
(addr + csi_dev->planar_offset[2]) >> 2);
}
void sun6i_csi_set_stream(struct sun6i_csi *csi, bool enable)
void sun6i_csi_set_stream(struct sun6i_csi_device *csi_dev, bool enable)
{
struct sun6i_csi_dev *sdev = sun6i_csi_to_dev(csi);
struct regmap *regmap = sdev->regmap;
struct regmap *regmap = csi_dev->regmap;
if (!enable) {
regmap_update_bits(regmap, CSI_CAP_REG, CSI_CAP_CH0_VCAP_ON, 0);
@ -624,7 +605,7 @@ void sun6i_csi_set_stream(struct sun6i_csi *csi, bool enable)
/* -----------------------------------------------------------------------------
* Media Controller and V4L2
*/
static int sun6i_csi_link_entity(struct sun6i_csi *csi,
static int sun6i_csi_link_entity(struct sun6i_csi_device *csi_dev,
struct media_entity *entity,
struct fwnode_handle *fwnode)
{
@ -635,24 +616,25 @@ static int sun6i_csi_link_entity(struct sun6i_csi *csi,
ret = media_entity_get_fwnode_pad(entity, fwnode, MEDIA_PAD_FL_SOURCE);
if (ret < 0) {
dev_err(csi->dev, "%s: no source pad in external entity %s\n",
__func__, entity->name);
dev_err(csi_dev->dev,
"%s: no source pad in external entity %s\n", __func__,
entity->name);
return -EINVAL;
}
src_pad_index = ret;
sink = &csi->video.vdev.entity;
sink_pad = &csi->video.pad;
sink = &csi_dev->video.vdev.entity;
sink_pad = &csi_dev->video.pad;
dev_dbg(csi->dev, "creating %s:%u -> %s:%u link\n",
dev_dbg(csi_dev->dev, "creating %s:%u -> %s:%u link\n",
entity->name, src_pad_index, sink->name, sink_pad->index);
ret = media_create_pad_link(entity, src_pad_index, sink,
sink_pad->index,
MEDIA_LNK_FL_ENABLED |
MEDIA_LNK_FL_IMMUTABLE);
if (ret < 0) {
dev_err(csi->dev, "failed to create %s:%u -> %s:%u link\n",
dev_err(csi_dev->dev, "failed to create %s:%u -> %s:%u link\n",
entity->name, src_pad_index,
sink->name, sink_pad->index);
return ret;
@ -663,27 +645,29 @@ static int sun6i_csi_link_entity(struct sun6i_csi *csi,
static int sun6i_subdev_notify_complete(struct v4l2_async_notifier *notifier)
{
struct sun6i_csi *csi = container_of(notifier, struct sun6i_csi,
notifier);
struct v4l2_device *v4l2_dev = &csi->v4l2_dev;
struct sun6i_csi_device *csi_dev =
container_of(notifier, struct sun6i_csi_device,
v4l2.notifier);
struct sun6i_csi_v4l2 *v4l2 = &csi_dev->v4l2;
struct v4l2_device *v4l2_dev = &v4l2->v4l2_dev;
struct v4l2_subdev *sd;
int ret;
dev_dbg(csi->dev, "notify complete, all subdevs registered\n");
dev_dbg(csi_dev->dev, "notify complete, all subdevs registered\n");
sd = list_first_entry(&v4l2_dev->subdevs, struct v4l2_subdev, list);
if (!sd)
return -EINVAL;
ret = sun6i_csi_link_entity(csi, &sd->entity, sd->fwnode);
ret = sun6i_csi_link_entity(csi_dev, &sd->entity, sd->fwnode);
if (ret < 0)
return ret;
ret = v4l2_device_register_subdev_nodes(&csi->v4l2_dev);
ret = v4l2_device_register_subdev_nodes(v4l2_dev);
if (ret < 0)
return ret;
return media_device_register(&csi->media_dev);
return media_device_register(&v4l2->media_dev);
}
static const struct v4l2_async_notifier_operations sun6i_csi_async_ops = {
@ -694,7 +678,7 @@ static int sun6i_csi_fwnode_parse(struct device *dev,
struct v4l2_fwnode_endpoint *vep,
struct v4l2_async_subdev *asd)
{
struct sun6i_csi *csi = dev_get_drvdata(dev);
struct sun6i_csi_device *csi_dev = dev_get_drvdata(dev);
if (vep->base.port || vep->base.id) {
dev_warn(dev, "Only support a single port with one endpoint\n");
@ -704,7 +688,7 @@ static int sun6i_csi_fwnode_parse(struct device *dev,
switch (vep->bus_type) {
case V4L2_MBUS_PARALLEL:
case V4L2_MBUS_BT656:
csi->v4l2_ep = *vep;
csi_dev->v4l2.v4l2_ep = *vep;
return 0;
default:
dev_err(dev, "Unsupported media bus type\n");
@ -712,76 +696,79 @@ static int sun6i_csi_fwnode_parse(struct device *dev,
}
}
static void sun6i_csi_v4l2_cleanup(struct sun6i_csi *csi)
static void sun6i_csi_v4l2_cleanup(struct sun6i_csi_device *csi_dev)
{
media_device_unregister(&csi->media_dev);
v4l2_async_nf_unregister(&csi->notifier);
v4l2_async_nf_cleanup(&csi->notifier);
sun6i_video_cleanup(&csi->video);
v4l2_device_unregister(&csi->v4l2_dev);
v4l2_ctrl_handler_free(&csi->ctrl_handler);
media_device_cleanup(&csi->media_dev);
struct sun6i_csi_v4l2 *v4l2 = &csi_dev->v4l2;
media_device_unregister(&v4l2->media_dev);
v4l2_async_nf_unregister(&v4l2->notifier);
v4l2_async_nf_cleanup(&v4l2->notifier);
sun6i_video_cleanup(&csi_dev->video);
v4l2_device_unregister(&v4l2->v4l2_dev);
v4l2_ctrl_handler_free(&v4l2->ctrl_handler);
media_device_cleanup(&v4l2->media_dev);
}
static int sun6i_csi_v4l2_init(struct sun6i_csi *csi)
static int sun6i_csi_v4l2_init(struct sun6i_csi_device *csi_dev)
{
struct sun6i_csi_v4l2 *v4l2 = &csi_dev->v4l2;
int ret;
csi->media_dev.dev = csi->dev;
strscpy(csi->media_dev.model, SUN6I_CSI_DESCRIPTION,
sizeof(csi->media_dev.model));
csi->media_dev.hw_revision = 0;
v4l2->media_dev.dev = csi_dev->dev;
strscpy(v4l2->media_dev.model, SUN6I_CSI_DESCRIPTION,
sizeof(v4l2->media_dev.model));
v4l2->media_dev.hw_revision = 0;
media_device_init(&csi->media_dev);
v4l2_async_nf_init(&csi->notifier);
media_device_init(&v4l2->media_dev);
v4l2_async_nf_init(&v4l2->notifier);
ret = v4l2_ctrl_handler_init(&csi->ctrl_handler, 0);
ret = v4l2_ctrl_handler_init(&v4l2->ctrl_handler, 0);
if (ret) {
dev_err(csi->dev, "V4L2 controls handler init failed (%d)\n",
dev_err(csi_dev->dev, "V4L2 controls handler init failed (%d)\n",
ret);
goto clean_media;
}
csi->v4l2_dev.mdev = &csi->media_dev;
csi->v4l2_dev.ctrl_handler = &csi->ctrl_handler;
ret = v4l2_device_register(csi->dev, &csi->v4l2_dev);
v4l2->v4l2_dev.mdev = &v4l2->media_dev;
v4l2->v4l2_dev.ctrl_handler = &v4l2->ctrl_handler;
ret = v4l2_device_register(csi_dev->dev, &v4l2->v4l2_dev);
if (ret) {
dev_err(csi->dev, "V4L2 device registration failed (%d)\n",
dev_err(csi_dev->dev, "V4L2 device registration failed (%d)\n",
ret);
goto free_ctrl;
}
ret = sun6i_video_init(&csi->video, csi, SUN6I_CSI_NAME);
ret = sun6i_video_init(&csi_dev->video, csi_dev, SUN6I_CSI_NAME);
if (ret)
goto unreg_v4l2;
ret = v4l2_async_nf_parse_fwnode_endpoints(csi->dev,
&csi->notifier,
ret = v4l2_async_nf_parse_fwnode_endpoints(csi_dev->dev,
&v4l2->notifier,
sizeof(struct
v4l2_async_subdev),
sun6i_csi_fwnode_parse);
if (ret)
goto clean_video;
csi->notifier.ops = &sun6i_csi_async_ops;
v4l2->notifier.ops = &sun6i_csi_async_ops;
ret = v4l2_async_nf_register(&csi->v4l2_dev, &csi->notifier);
ret = v4l2_async_nf_register(&v4l2->v4l2_dev, &v4l2->notifier);
if (ret) {
dev_err(csi->dev, "notifier registration failed\n");
dev_err(csi_dev->dev, "notifier registration failed\n");
goto clean_video;
}
return 0;
clean_video:
sun6i_video_cleanup(&csi->video);
sun6i_video_cleanup(&csi_dev->video);
unreg_v4l2:
v4l2_device_unregister(&csi->v4l2_dev);
v4l2_device_unregister(&v4l2->v4l2_dev);
free_ctrl:
v4l2_ctrl_handler_free(&csi->ctrl_handler);
v4l2_ctrl_handler_free(&v4l2->ctrl_handler);
clean_media:
v4l2_async_nf_cleanup(&csi->notifier);
media_device_cleanup(&csi->media_dev);
v4l2_async_nf_cleanup(&v4l2->notifier);
media_device_cleanup(&v4l2->media_dev);
return ret;
}
@ -791,8 +778,8 @@ clean_media:
*/
static irqreturn_t sun6i_csi_isr(int irq, void *dev_id)
{
struct sun6i_csi_dev *sdev = (struct sun6i_csi_dev *)dev_id;
struct regmap *regmap = sdev->regmap;
struct sun6i_csi_device *csi_dev = (struct sun6i_csi_device *)dev_id;
struct regmap *regmap = csi_dev->regmap;
u32 status;
regmap_read(regmap, CSI_CH_INT_STA_REG, &status);
@ -812,7 +799,7 @@ static irqreturn_t sun6i_csi_isr(int irq, void *dev_id)
}
if (status & CSI_CH_INT_STA_FD_PD)
sun6i_video_frame_done(&sdev->csi.video);
sun6i_video_frame_done(&csi_dev->video);
regmap_write(regmap, CSI_CH_INT_STA_REG, status);
@ -826,7 +813,7 @@ static const struct regmap_config sun6i_csi_regmap_config = {
.max_register = 0x9c,
};
static int sun6i_csi_resource_request(struct sun6i_csi_dev *sdev,
static int sun6i_csi_resource_request(struct sun6i_csi_device *csi_dev,
struct platform_device *pdev)
{
void __iomem *io_base;
@ -837,29 +824,29 @@ static int sun6i_csi_resource_request(struct sun6i_csi_dev *sdev,
if (IS_ERR(io_base))
return PTR_ERR(io_base);
sdev->regmap = devm_regmap_init_mmio_clk(&pdev->dev, "bus", io_base,
&sun6i_csi_regmap_config);
if (IS_ERR(sdev->regmap)) {
csi_dev->regmap = devm_regmap_init_mmio_clk(&pdev->dev, "bus", io_base,
&sun6i_csi_regmap_config);
if (IS_ERR(csi_dev->regmap)) {
dev_err(&pdev->dev, "Failed to init register map\n");
return PTR_ERR(sdev->regmap);
return PTR_ERR(csi_dev->regmap);
}
sdev->clk_mod = devm_clk_get(&pdev->dev, "mod");
if (IS_ERR(sdev->clk_mod)) {
csi_dev->clk_mod = devm_clk_get(&pdev->dev, "mod");
if (IS_ERR(csi_dev->clk_mod)) {
dev_err(&pdev->dev, "Unable to acquire csi clock\n");
return PTR_ERR(sdev->clk_mod);
return PTR_ERR(csi_dev->clk_mod);
}
sdev->clk_ram = devm_clk_get(&pdev->dev, "ram");
if (IS_ERR(sdev->clk_ram)) {
csi_dev->clk_ram = devm_clk_get(&pdev->dev, "ram");
if (IS_ERR(csi_dev->clk_ram)) {
dev_err(&pdev->dev, "Unable to acquire dram-csi clock\n");
return PTR_ERR(sdev->clk_ram);
return PTR_ERR(csi_dev->clk_ram);
}
sdev->rstc_bus = devm_reset_control_get_shared(&pdev->dev, NULL);
if (IS_ERR(sdev->rstc_bus)) {
csi_dev->reset = devm_reset_control_get_shared(&pdev->dev, NULL);
if (IS_ERR(csi_dev->reset)) {
dev_err(&pdev->dev, "Cannot get reset controller\n");
return PTR_ERR(sdev->rstc_bus);
return PTR_ERR(csi_dev->reset);
}
irq = platform_get_irq(pdev, 0);
@ -867,7 +854,7 @@ static int sun6i_csi_resource_request(struct sun6i_csi_dev *sdev,
return -ENXIO;
ret = devm_request_irq(&pdev->dev, irq, sun6i_csi_isr, 0,
SUN6I_CSI_NAME, sdev);
SUN6I_CSI_NAME, csi_dev);
if (ret) {
dev_err(&pdev->dev, "Cannot request csi IRQ\n");
return ret;
@ -878,30 +865,29 @@ static int sun6i_csi_resource_request(struct sun6i_csi_dev *sdev,
static int sun6i_csi_probe(struct platform_device *pdev)
{
struct sun6i_csi_dev *sdev;
struct sun6i_csi_device *csi_dev;
int ret;
sdev = devm_kzalloc(&pdev->dev, sizeof(*sdev), GFP_KERNEL);
if (!sdev)
csi_dev = devm_kzalloc(&pdev->dev, sizeof(*csi_dev), GFP_KERNEL);
if (!csi_dev)
return -ENOMEM;
sdev->dev = &pdev->dev;
csi_dev->dev = &pdev->dev;
ret = sun6i_csi_resource_request(sdev, pdev);
ret = sun6i_csi_resource_request(csi_dev, pdev);
if (ret)
return ret;
platform_set_drvdata(pdev, sdev);
platform_set_drvdata(pdev, csi_dev);
sdev->csi.dev = &pdev->dev;
return sun6i_csi_v4l2_init(&sdev->csi);
return sun6i_csi_v4l2_init(csi_dev);
}
static int sun6i_csi_remove(struct platform_device *pdev)
{
struct sun6i_csi_dev *sdev = platform_get_drvdata(pdev);
struct sun6i_csi_device *csi_dev = platform_get_drvdata(pdev);
sun6i_csi_v4l2_cleanup(&sdev->csi);
sun6i_csi_v4l2_cleanup(csi_dev);
return 0;
}

50
drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h
View File

@ -17,8 +17,6 @@
#define SUN6I_CSI_NAME "sun6i-csi"
#define SUN6I_CSI_DESCRIPTION "Allwinner A31 CSI Device"
struct sun6i_csi;
/**
* struct sun6i_csi_config - configs for sun6i csi
* @pixelformat: v4l2 pixel format (V4L2_PIX_FMT_*)
@ -35,59 +33,75 @@ struct sun6i_csi_config {
u32 height;
};
struct sun6i_csi {
struct device *dev;
struct v4l2_ctrl_handler ctrl_handler;
struct sun6i_csi_v4l2 {
struct v4l2_device v4l2_dev;
struct v4l2_ctrl_handler ctrl_handler;
struct media_device media_dev;
struct v4l2_async_notifier notifier;
/* video port settings */
struct v4l2_fwnode_endpoint v4l2_ep;
};
struct sun6i_csi_device {
struct device *dev;
struct sun6i_csi_config config;
struct sun6i_csi_v4l2 v4l2;
struct sun6i_video video;
struct regmap *regmap;
struct clk *clk_mod;
struct clk *clk_ram;
struct reset_control *reset;
int planar_offset[3];
};
/**
* sun6i_csi_is_format_supported() - check if the format supported by csi
* @csi: pointer to the csi
* @csi_dev: pointer to the csi device
* @pixformat: v4l2 pixel format (V4L2_PIX_FMT_*)
* @mbus_code: media bus format code (MEDIA_BUS_FMT_*)
*
* Return: true if format is supported, false otherwise.
*/
bool sun6i_csi_is_format_supported(struct sun6i_csi *csi, u32 pixformat,
u32 mbus_code);
bool sun6i_csi_is_format_supported(struct sun6i_csi_device *csi_dev,
u32 pixformat, u32 mbus_code);
/**
* sun6i_csi_set_power() - power on/off the csi
* @csi: pointer to the csi
* @csi_dev: pointer to the csi device
* @enable: on/off
*
* Return: 0 if successful, error code otherwise.
*/
int sun6i_csi_set_power(struct sun6i_csi *csi, bool enable);
int sun6i_csi_set_power(struct sun6i_csi_device *csi_dev, bool enable);
/**
* sun6i_csi_update_config() - update the csi register settings
* @csi: pointer to the csi
* @csi_dev: pointer to the csi device
* @config: see struct sun6i_csi_config
*
* Return: 0 if successful, error code otherwise.
*/
int sun6i_csi_update_config(struct sun6i_csi *csi,
int sun6i_csi_update_config(struct sun6i_csi_device *csi_dev,
struct sun6i_csi_config *config);
/**
* sun6i_csi_update_buf_addr() - update the csi frame buffer address
* @csi: pointer to the csi
* @csi_dev: pointer to the csi device
* @addr: frame buffer's physical address
*/
void sun6i_csi_update_buf_addr(struct sun6i_csi *csi, dma_addr_t addr);
void sun6i_csi_update_buf_addr(struct sun6i_csi_device *csi_dev,
dma_addr_t addr);
/**
* sun6i_csi_set_stream() - start/stop csi streaming
* @csi: pointer to the csi
* @csi_dev: pointer to the csi device
* @enable: start/stop
*/
void sun6i_csi_set_stream(struct sun6i_csi *csi, bool enable);
void sun6i_csi_set_stream(struct sun6i_csi_device *csi_dev, bool enable);
/* get bpp form v4l2 pixformat */
static inline int sun6i_csi_get_bpp(unsigned int pixformat)

52
drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c
View File

@ -162,7 +162,7 @@ static int sun6i_video_start_streaming(struct vb2_queue *vq, unsigned int count)
config.width = video->fmt.fmt.pix.width;
config.height = video->fmt.fmt.pix.height;
ret = sun6i_csi_update_config(video->csi, &config);
ret = sun6i_csi_update_config(video->csi_dev, &config);
if (ret < 0)
goto stop_media_pipeline;
@ -171,9 +171,9 @@ static int sun6i_video_start_streaming(struct vb2_queue *vq, unsigned int count)
buf = list_first_entry(&video->dma_queue,
struct sun6i_csi_buffer, list);
buf->queued_to_csi = true;
sun6i_csi_update_buf_addr(video->csi, buf->dma_addr);
sun6i_csi_update_buf_addr(video->csi_dev, buf->dma_addr);
sun6i_csi_set_stream(video->csi, true);
sun6i_csi_set_stream(video->csi_dev, true);
/*
* CSI will lookup the next dma buffer for next frame before the
@ -194,7 +194,7 @@ static int sun6i_video_start_streaming(struct vb2_queue *vq, unsigned int count)
*/
next_buf = list_next_entry(buf, list);
next_buf->queued_to_csi = true;
sun6i_csi_update_buf_addr(video->csi, next_buf->dma_addr);
sun6i_csi_update_buf_addr(video->csi_dev, next_buf->dma_addr);
spin_unlock_irqrestore(&video->dma_queue_lock, flags);
@ -205,7 +205,7 @@ static int sun6i_video_start_streaming(struct vb2_queue *vq, unsigned int count)
return 0;
stop_csi_stream:
sun6i_csi_set_stream(video->csi, false);
sun6i_csi_set_stream(video->csi_dev, false);
stop_media_pipeline:
video_device_pipeline_stop(&video->vdev);
clear_dma_queue:
@ -229,7 +229,7 @@ static void sun6i_video_stop_streaming(struct vb2_queue *vq)
if (subdev)
v4l2_subdev_call(subdev, video, s_stream, 0);
sun6i_csi_set_stream(video->csi, false);
sun6i_csi_set_stream(video->csi_dev, false);
video_device_pipeline_stop(&video->vdev);
@ -266,7 +266,7 @@ void sun6i_video_frame_done(struct sun6i_video *video)
buf = list_first_entry(&video->dma_queue,
struct sun6i_csi_buffer, list);
if (list_is_last(&buf->list, &video->dma_queue)) {
dev_dbg(video->csi->dev, "Frame dropped!\n");
dev_dbg(video->csi_dev->dev, "Frame dropped!\n");
goto unlock;
}
@ -278,8 +278,8 @@ void sun6i_video_frame_done(struct sun6i_video *video)
*/
if (!next_buf->queued_to_csi) {
next_buf->queued_to_csi = true;
sun6i_csi_update_buf_addr(video->csi, next_buf->dma_addr);
dev_dbg(video->csi->dev, "Frame dropped!\n");
sun6i_csi_update_buf_addr(video->csi_dev, next_buf->dma_addr);
dev_dbg(video->csi_dev->dev, "Frame dropped!\n");
goto unlock;
}
@ -293,9 +293,9 @@ void sun6i_video_frame_done(struct sun6i_video *video)
if (!list_is_last(&next_buf->list, &video->dma_queue)) {
next_buf = list_next_entry(next_buf, list);
next_buf->queued_to_csi = true;
sun6i_csi_update_buf_addr(video->csi, next_buf->dma_addr);
sun6i_csi_update_buf_addr(video->csi_dev, next_buf->dma_addr);
} else {
dev_dbg(video->csi->dev, "Next frame will be dropped!\n");
dev_dbg(video->csi_dev->dev, "Next frame will be dropped!\n");
}
unlock:
@ -321,7 +321,7 @@ static int vidioc_querycap(struct file *file, void *priv,
strscpy(cap->driver, "sun6i-video", sizeof(cap->driver));
strscpy(cap->card, video->vdev.name, sizeof(cap->card));
snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
video->csi->dev->of_node->name);
video->csi_dev->dev->of_node->name);
return 0;
}
@ -488,7 +488,7 @@ static int sun6i_video_open(struct file *file)
if (!v4l2_fh_is_singular_file(file))
goto unlock;
ret = sun6i_csi_set_power(video->csi, true);
ret = sun6i_csi_set_power(video->csi_dev, true);
if (ret < 0)
goto fh_release;
@ -516,7 +516,7 @@ static int sun6i_video_close(struct file *file)
v4l2_pipeline_pm_put(&video->vdev.entity);
if (last_fh)
sun6i_csi_set_power(video->csi, false);
sun6i_csi_set_power(video->csi_dev, false);
mutex_unlock(&video->lock);
@ -561,7 +561,7 @@ static int sun6i_video_link_validate(struct media_link *link)
video->mbus_code = 0;
if (!media_pad_remote_pad_first(link->sink->entity->pads)) {
dev_info(video->csi->dev,
dev_info(video->csi_dev->dev,
"video node %s pad not connected\n", vdev->name);
return -ENOLINK;
}
@ -570,10 +570,10 @@ static int sun6i_video_link_validate(struct media_link *link)
if (ret < 0)
return ret;
if (!sun6i_csi_is_format_supported(video->csi,
if (!sun6i_csi_is_format_supported(video->csi_dev,
video->fmt.fmt.pix.pixelformat,
source_fmt.format.code)) {
dev_err(video->csi->dev,
dev_err(video->csi_dev->dev,
"Unsupported pixformat: 0x%x with mbus code: 0x%x!\n",
video->fmt.fmt.pix.pixelformat,
source_fmt.format.code);
@ -582,7 +582,7 @@ static int sun6i_video_link_validate(struct media_link *link)
if (source_fmt.format.width != video->fmt.fmt.pix.width ||
source_fmt.format.height != video->fmt.fmt.pix.height) {
dev_err(video->csi->dev,
dev_err(video->csi_dev->dev,
"Wrong width or height %ux%u (%ux%u expected)\n",
video->fmt.fmt.pix.width, video->fmt.fmt.pix.height,
source_fmt.format.width, source_fmt.format.height);
@ -598,15 +598,16 @@ static const struct media_entity_operations sun6i_video_media_ops = {
.link_validate = sun6i_video_link_validate
};
int sun6i_video_init(struct sun6i_video *video, struct sun6i_csi *csi,
const char *name)
int sun6i_video_init(struct sun6i_video *video,
struct sun6i_csi_device *csi_dev, const char *name)
{
struct sun6i_csi_v4l2 *v4l2 = &csi_dev->v4l2;
struct video_device *vdev = &video->vdev;
struct vb2_queue *vidq = &video->vb2_vidq;
struct v4l2_format fmt = { 0 };
int ret;
video->csi = csi;
video->csi_dev = csi_dev;
/* Initialize the media entity... */
video->pad.flags = MEDIA_PAD_FL_SINK | MEDIA_PAD_FL_MUST_CONNECT;
@ -641,11 +642,12 @@ int sun6i_video_init(struct sun6i_video *video, struct sun6i_csi *csi,
vidq->lock = &video->lock;
/* Make sure non-dropped frame */
vidq->min_buffers_needed = 3;
vidq->dev = csi->dev;
vidq->dev = csi_dev->dev;
ret = vb2_queue_init(vidq);
if (ret) {
v4l2_err(&csi->v4l2_dev, "vb2_queue_init failed: %d\n", ret);
v4l2_err(&v4l2->v4l2_dev, "vb2_queue_init failed: %d\n",
ret);
goto clean_entity;
}
@ -656,7 +658,7 @@ int sun6i_video_init(struct sun6i_video *video, struct sun6i_csi *csi,
vdev->ioctl_ops = &sun6i_video_ioctl_ops;
vdev->vfl_type = VFL_TYPE_VIDEO;
vdev->vfl_dir = VFL_DIR_RX;
vdev->v4l2_dev = &csi->v4l2_dev;
vdev->v4l2_dev = &v4l2->v4l2_dev;
vdev->queue = vidq;
vdev->lock = &video->lock;
vdev->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE;
@ -664,7 +666,7 @@ int sun6i_video_init(struct sun6i_video *video, struct sun6i_csi *csi,
ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
if (ret < 0) {
v4l2_err(&csi->v4l2_dev,
v4l2_err(&v4l2->v4l2_dev,
"video_register_device failed: %d\n", ret);
goto clean_entity;
}

8
drivers/media/platform/sunxi/sun6i-csi/sun6i_video.h
View File

@ -11,12 +11,12 @@
#include <media/v4l2-dev.h>
#include <media/videobuf2-core.h>
struct sun6i_csi;
struct sun6i_csi_device;
struct sun6i_video {
struct sun6i_csi_device *csi_dev;
struct video_device vdev;
struct media_pad pad;
struct sun6i_csi *csi;
struct mutex lock;
@ -29,8 +29,8 @@ struct sun6i_video {
u32 mbus_code;
};
int sun6i_video_init(struct sun6i_video *video, struct sun6i_csi *csi,
const char *name);
int sun6i_video_init(struct sun6i_video *video,
struct sun6i_csi_device *csi_dev, const char *name);
void sun6i_video_cleanup(struct sun6i_video *video);
void sun6i_video_frame_done(struct sun6i_video *video);