mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 15:32:33 +00:00
62b7f5931c
bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
(cherry-picked from commit f07e572f64)
308 lines
9.0 KiB
Diff
308 lines
9.0 KiB
Diff
From e3c6ec43e950d9e08715e2c693771080c7d078a3 Mon Sep 17 00:00:00 2001
|
|
From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
|
|
Date: Fri, 12 Jun 2020 15:53:50 +0200
|
|
Subject: [PATCH] media: i2c: imx290: Add configurable link frequency
|
|
and pixel rate
|
|
|
|
Commit 98e0500eadb772e1be32d8e369fcc3b7bcac93ed upstream.
|
|
|
|
IMX290 operates with multiple link frequency and pixel rate combinations.
|
|
The initial driver used a single setting for both but since we now have
|
|
the lane count support in place, let's add configurable link frequency
|
|
and pixel rate.
|
|
|
|
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
|
|
Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org>
|
|
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
|
|
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
|
|
---
|
|
drivers/media/i2c/imx290.c | 148 +++++++++++++++++++++++++++----------
|
|
1 file changed, 109 insertions(+), 39 deletions(-)
|
|
|
|
--- a/drivers/media/i2c/imx290.c
|
|
+++ b/drivers/media/i2c/imx290.c
|
|
@@ -32,8 +32,6 @@
|
|
#define IMX290_PHY_LANE_NUM 0x3407
|
|
#define IMX290_CSI_LANE_MODE 0x3443
|
|
|
|
-#define IMX290_DEFAULT_LINK_FREQ 445500000
|
|
-
|
|
static const char * const imx290_supply_name[] = {
|
|
"vdda",
|
|
"vddd",
|
|
@@ -51,8 +49,7 @@ struct imx290_mode {
|
|
u32 width;
|
|
u32 height;
|
|
u32 hmax;
|
|
- u32 pixel_rate;
|
|
- u32 link_freq_index;
|
|
+ u8 link_freq_index;
|
|
|
|
const struct imx290_regval *data;
|
|
u32 data_size;
|
|
@@ -243,9 +240,36 @@ static const struct imx290_regval imx290
|
|
};
|
|
|
|
/* supported link frequencies */
|
|
-static const s64 imx290_link_freq[] = {
|
|
- IMX290_DEFAULT_LINK_FREQ,
|
|
-};
|
|
+#define FREQ_INDEX_1080P 0
|
|
+#define FREQ_INDEX_720P 1
|
|
+static const s64 imx290_link_freq_2lanes[] = {
|
|
+ [FREQ_INDEX_1080P] = 445500000,
|
|
+ [FREQ_INDEX_720P] = 297000000,
|
|
+};
|
|
+static const s64 imx290_link_freq_4lanes[] = {
|
|
+ [FREQ_INDEX_1080P] = 222750000,
|
|
+ [FREQ_INDEX_720P] = 148500000,
|
|
+};
|
|
+
|
|
+/*
|
|
+ * In this function and in the similar ones below We rely on imx290_probe()
|
|
+ * to ensure that nlanes is either 2 or 4.
|
|
+ */
|
|
+static inline const s64 *imx290_link_freqs_ptr(const struct imx290 *imx290)
|
|
+{
|
|
+ if (imx290->nlanes == 2)
|
|
+ return imx290_link_freq_2lanes;
|
|
+ else
|
|
+ return imx290_link_freq_4lanes;
|
|
+}
|
|
+
|
|
+static inline int imx290_link_freqs_num(const struct imx290 *imx290)
|
|
+{
|
|
+ if (imx290->nlanes == 2)
|
|
+ return ARRAY_SIZE(imx290_link_freq_2lanes);
|
|
+ else
|
|
+ return ARRAY_SIZE(imx290_link_freq_4lanes);
|
|
+}
|
|
|
|
/* Mode configs */
|
|
static const struct imx290_mode imx290_modes_2lanes[] = {
|
|
@@ -253,19 +277,17 @@ static const struct imx290_mode imx290_m
|
|
.width = 1920,
|
|
.height = 1080,
|
|
.hmax = 0x1130,
|
|
+ .link_freq_index = FREQ_INDEX_1080P,
|
|
.data = imx290_1080p_settings,
|
|
.data_size = ARRAY_SIZE(imx290_1080p_settings),
|
|
- .pixel_rate = 178200000,
|
|
- .link_freq_index = 0,
|
|
},
|
|
{
|
|
.width = 1280,
|
|
.height = 720,
|
|
.hmax = 0x19c8,
|
|
+ .link_freq_index = FREQ_INDEX_720P,
|
|
.data = imx290_720p_settings,
|
|
.data_size = ARRAY_SIZE(imx290_720p_settings),
|
|
- .pixel_rate = 178200000,
|
|
- .link_freq_index = 0,
|
|
},
|
|
};
|
|
|
|
@@ -274,25 +296,22 @@ static const struct imx290_mode imx290_m
|
|
.width = 1920,
|
|
.height = 1080,
|
|
.hmax = 0x0898,
|
|
+ .link_freq_index = FREQ_INDEX_1080P,
|
|
.data = imx290_1080p_settings,
|
|
.data_size = ARRAY_SIZE(imx290_1080p_settings),
|
|
- .pixel_rate = 178200000,
|
|
- .link_freq_index = 0,
|
|
},
|
|
{
|
|
.width = 1280,
|
|
.height = 720,
|
|
.hmax = 0x0ce4,
|
|
+ .link_freq_index = FREQ_INDEX_720P,
|
|
.data = imx290_720p_settings,
|
|
.data_size = ARRAY_SIZE(imx290_720p_settings),
|
|
- .pixel_rate = 178200000,
|
|
- .link_freq_index = 0,
|
|
},
|
|
};
|
|
|
|
static inline const struct imx290_mode *imx290_modes_ptr(const struct imx290 *imx290)
|
|
{
|
|
- /* We rely on imx290_probe() to ensure that nlanes is either 2 or 4 */
|
|
if (imx290->nlanes == 2)
|
|
return imx290_modes_2lanes;
|
|
else
|
|
@@ -477,6 +496,30 @@ static int imx290_get_fmt(struct v4l2_su
|
|
return 0;
|
|
}
|
|
|
|
+static inline u8 imx290_get_link_freq_index(struct imx290 *imx290)
|
|
+{
|
|
+ return imx290->current_mode->link_freq_index;
|
|
+}
|
|
+
|
|
+static s64 imx290_get_link_freq(struct imx290 *imx290)
|
|
+{
|
|
+ u8 index = imx290_get_link_freq_index(imx290);
|
|
+
|
|
+ return *(imx290_link_freqs_ptr(imx290) + index);
|
|
+}
|
|
+
|
|
+static u64 imx290_calc_pixel_rate(struct imx290 *imx290)
|
|
+{
|
|
+ s64 link_freq = imx290_get_link_freq(imx290);
|
|
+ u8 nlanes = imx290->nlanes;
|
|
+ u64 pixel_rate;
|
|
+
|
|
+ /* pixel rate = link_freq * 2 * nr_of_lanes / bits_per_sample */
|
|
+ pixel_rate = link_freq * 2 * nlanes;
|
|
+ do_div(pixel_rate, 10);
|
|
+ return pixel_rate;
|
|
+}
|
|
+
|
|
static int imx290_set_fmt(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_format *fmt)
|
|
@@ -509,10 +552,14 @@ static int imx290_set_fmt(struct v4l2_su
|
|
format = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
|
|
} else {
|
|
format = &imx290->current_format;
|
|
- __v4l2_ctrl_s_ctrl(imx290->link_freq, mode->link_freq_index);
|
|
- __v4l2_ctrl_s_ctrl_int64(imx290->pixel_rate, mode->pixel_rate);
|
|
-
|
|
imx290->current_mode = mode;
|
|
+
|
|
+ if (imx290->link_freq)
|
|
+ __v4l2_ctrl_s_ctrl(imx290->link_freq,
|
|
+ imx290_get_link_freq_index(imx290));
|
|
+ if (imx290->pixel_rate)
|
|
+ __v4l2_ctrl_s_ctrl_int64(imx290->pixel_rate,
|
|
+ imx290_calc_pixel_rate(imx290));
|
|
}
|
|
|
|
*format = fmt->format;
|
|
@@ -536,12 +583,11 @@ static int imx290_entity_init_cfg(struct
|
|
return 0;
|
|
}
|
|
|
|
-static int imx290_write_current_format(struct imx290 *imx290,
|
|
- struct v4l2_mbus_framefmt *format)
|
|
+static int imx290_write_current_format(struct imx290 *imx290)
|
|
{
|
|
int ret;
|
|
|
|
- switch (format->code) {
|
|
+ switch (imx290->current_format.code) {
|
|
case MEDIA_BUS_FMT_SRGGB10_1X10:
|
|
ret = imx290_set_register_array(imx290, imx290_10bit_settings,
|
|
ARRAY_SIZE(
|
|
@@ -592,8 +638,8 @@ static int imx290_start_streaming(struct
|
|
return ret;
|
|
}
|
|
|
|
- /* Set current frame format */
|
|
- ret = imx290_write_current_format(imx290, &imx290->current_format);
|
|
+ /* Apply the register values related to current frame format */
|
|
+ ret = imx290_write_current_format(imx290);
|
|
if (ret < 0) {
|
|
dev_err(imx290->dev, "Could not set frame format\n");
|
|
return ret;
|
|
@@ -776,13 +822,34 @@ static const struct media_entity_operati
|
|
.link_validate = v4l2_subdev_link_validate,
|
|
};
|
|
|
|
+/*
|
|
+ * Returns 0 if all link frequencies used by the driver for the given number
|
|
+ * of MIPI data lanes are mentioned in the device tree, or the value of the
|
|
+ * first missing frequency otherwise.
|
|
+ */
|
|
+static s64 imx290_check_link_freqs(const struct imx290 *imx290)
|
|
+{
|
|
+ int i, j;
|
|
+ const s64 *freqs = imx290_link_freqs_ptr(imx290);
|
|
+ int freqs_count = imx290_link_freqs_num(imx290);
|
|
+
|
|
+ for (i = 0; i < freqs_count; i++) {
|
|
+ for (j = 0; j < imx290->ep.nr_of_link_frequencies; j++)
|
|
+ if (freqs[i] == imx290->ep.link_frequencies[j])
|
|
+ break;
|
|
+ if (j == imx290->ep.nr_of_link_frequencies)
|
|
+ return freqs[i];
|
|
+ }
|
|
+ return 0;
|
|
+}
|
|
+
|
|
static int imx290_probe(struct i2c_client *client)
|
|
{
|
|
struct device *dev = &client->dev;
|
|
struct fwnode_handle *endpoint;
|
|
struct imx290 *imx290;
|
|
u32 xclk_freq;
|
|
- u32 default_pixel_rate;
|
|
+ s64 fq;
|
|
int ret;
|
|
|
|
imx290 = devm_kzalloc(dev, sizeof(*imx290), GFP_KERNEL);
|
|
@@ -825,8 +892,10 @@ static int imx290_probe(struct i2c_clien
|
|
goto free_err;
|
|
}
|
|
|
|
- if (imx290->ep.link_frequencies[0] != IMX290_DEFAULT_LINK_FREQ) {
|
|
- dev_err(dev, "Unsupported link frequency\n");
|
|
+ /* Check that link frequences for all the modes are in device tree */
|
|
+ fq = imx290_check_link_freqs(imx290);
|
|
+ if (fq) {
|
|
+ dev_err(dev, "Link frequency of %lld is not supported\n", fq);
|
|
ret = -EINVAL;
|
|
goto free_err;
|
|
}
|
|
@@ -883,26 +952,30 @@ static int imx290_probe(struct i2c_clien
|
|
|
|
mutex_init(&imx290->lock);
|
|
|
|
+ /*
|
|
+ * Initialize the frame format. In particular, imx290->current_mode
|
|
+ * and imx290->bpp are set to defaults: imx290_calc_pixel_rate() call
|
|
+ * below relies on these fields.
|
|
+ */
|
|
+ imx290_entity_init_cfg(&imx290->sd, NULL);
|
|
+
|
|
v4l2_ctrl_handler_init(&imx290->ctrls, 3);
|
|
|
|
v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
|
|
V4L2_CID_GAIN, 0, 72, 1, 0);
|
|
+
|
|
imx290->link_freq =
|
|
- v4l2_ctrl_new_int_menu(&imx290->ctrls,
|
|
- &imx290_ctrl_ops,
|
|
+ v4l2_ctrl_new_int_menu(&imx290->ctrls, &imx290_ctrl_ops,
|
|
V4L2_CID_LINK_FREQ,
|
|
- ARRAY_SIZE(imx290_link_freq) - 1,
|
|
- 0, imx290_link_freq);
|
|
+ imx290_link_freqs_num(imx290) - 1, 0,
|
|
+ imx290_link_freqs_ptr(imx290));
|
|
if (imx290->link_freq)
|
|
imx290->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
|
|
|
|
- default_pixel_rate = imx290->nlanes == 2 ?
|
|
- imx290_modes_2lanes[0].pixel_rate :
|
|
- imx290_modes_4lanes[0].pixel_rate;
|
|
imx290->pixel_rate = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
|
|
- V4L2_CID_PIXEL_RATE, 1,
|
|
- INT_MAX, 1,
|
|
- default_pixel_rate);
|
|
+ V4L2_CID_PIXEL_RATE,
|
|
+ 1, INT_MAX, 1,
|
|
+ imx290_calc_pixel_rate(imx290));
|
|
|
|
imx290->sd.ctrl_handler = &imx290->ctrls;
|
|
|
|
@@ -926,9 +999,6 @@ static int imx290_probe(struct i2c_clien
|
|
goto free_ctrl;
|
|
}
|
|
|
|
- /* Initialize the frame format (this also sets imx290->current_mode) */
|
|
- imx290_entity_init_cfg(&imx290->sd, NULL);
|
|
-
|
|
ret = v4l2_async_register_subdev(&imx290->sd);
|
|
if (ret < 0) {
|
|
dev_err(dev, "Could not register v4l2 device\n");
|