mirror of
https://github.com/openwrt/openwrt.git
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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)
315 lines
8.4 KiB
Diff
315 lines
8.4 KiB
Diff
From 78d867300b5026ab31c9a3fbd37b6590b7940f66 Mon Sep 17 00:00:00 2001
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From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
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Date: Fri, 12 Jun 2020 15:53:49 +0200
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Subject: [PATCH] media: i2c: imx290: Add support for 2 data lanes
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Commit 97589ad61c730e0f486635c6c19fa25ab8e8f29d upstream.
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The IMX290 sensor can output frames with 2/4 CSI2 data lanes. This commit
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adds support for 2 lane mode in addition to the 4 lane and also
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configuring the data lane settings in the driver based on system
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configuration.
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Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
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Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org>
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Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
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Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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---
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drivers/media/i2c/imx290.c | 147 +++++++++++++++++++++++++++++++++----
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1 file changed, 133 insertions(+), 14 deletions(-)
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--- a/drivers/media/i2c/imx290.c
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+++ b/drivers/media/i2c/imx290.c
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@@ -25,7 +25,12 @@
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#define IMX290_STANDBY 0x3000
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#define IMX290_REGHOLD 0x3001
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#define IMX290_XMSTA 0x3002
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+#define IMX290_FR_FDG_SEL 0x3009
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#define IMX290_GAIN 0x3014
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+#define IMX290_HMAX_LOW 0x301c
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+#define IMX290_HMAX_HIGH 0x301d
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+#define IMX290_PHY_LANE_NUM 0x3407
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+#define IMX290_CSI_LANE_MODE 0x3443
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#define IMX290_DEFAULT_LINK_FREQ 445500000
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@@ -45,6 +50,7 @@ struct imx290_regval {
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struct imx290_mode {
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u32 width;
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u32 height;
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+ u32 hmax;
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u32 pixel_rate;
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u32 link_freq_index;
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@@ -56,6 +62,7 @@ struct imx290 {
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struct device *dev;
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struct clk *xclk;
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struct regmap *regmap;
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+ u8 nlanes;
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struct v4l2_subdev sd;
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struct v4l2_fwnode_endpoint ep;
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@@ -89,14 +96,11 @@ static const struct regmap_config imx290
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static const struct imx290_regval imx290_global_init_settings[] = {
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{ 0x3007, 0x00 },
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- { 0x3009, 0x00 },
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{ 0x3018, 0x65 },
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{ 0x3019, 0x04 },
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{ 0x301a, 0x00 },
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- { 0x3443, 0x03 },
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{ 0x3444, 0x20 },
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{ 0x3445, 0x25 },
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- { 0x3407, 0x03 },
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{ 0x303a, 0x0c },
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{ 0x3040, 0x00 },
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{ 0x3041, 0x00 },
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@@ -169,7 +173,6 @@ static const struct imx290_regval imx290
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{ 0x3164, 0x1a },
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{ 0x3480, 0x49 },
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/* data rate settings */
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- { 0x3009, 0x01 },
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{ 0x3405, 0x10 },
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{ 0x3446, 0x57 },
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{ 0x3447, 0x00 },
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@@ -187,8 +190,6 @@ static const struct imx290_regval imx290
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{ 0x3453, 0x00 },
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{ 0x3454, 0x17 },
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{ 0x3455, 0x00 },
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- { 0x301c, 0x98 },
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- { 0x301d, 0x08 },
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};
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static const struct imx290_regval imx290_720p_settings[] = {
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@@ -210,7 +211,6 @@ static const struct imx290_regval imx290
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{ 0x3164, 0x1a },
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{ 0x3480, 0x49 },
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/* data rate settings */
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- { 0x3009, 0x01 },
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{ 0x3405, 0x10 },
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{ 0x3446, 0x4f },
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{ 0x3447, 0x00 },
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@@ -228,8 +228,6 @@ static const struct imx290_regval imx290
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{ 0x3453, 0x00 },
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{ 0x3454, 0x17 },
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{ 0x3455, 0x00 },
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- { 0x301c, 0xe4 },
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- { 0x301d, 0x0c },
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};
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static const struct imx290_regval imx290_10bit_settings[] = {
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@@ -250,10 +248,11 @@ static const s64 imx290_link_freq[] = {
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};
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/* Mode configs */
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-static const struct imx290_mode imx290_modes[] = {
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+static const struct imx290_mode imx290_modes_2lanes[] = {
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{
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.width = 1920,
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.height = 1080,
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+ .hmax = 0x1130,
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.data = imx290_1080p_settings,
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.data_size = ARRAY_SIZE(imx290_1080p_settings),
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.pixel_rate = 178200000,
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@@ -262,6 +261,7 @@ static const struct imx290_mode imx290_m
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{
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.width = 1280,
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.height = 720,
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+ .hmax = 0x19c8,
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.data = imx290_720p_settings,
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.data_size = ARRAY_SIZE(imx290_720p_settings),
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.pixel_rate = 178200000,
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@@ -269,6 +269,44 @@ static const struct imx290_mode imx290_m
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},
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};
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+static const struct imx290_mode imx290_modes_4lanes[] = {
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+ {
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+ .width = 1920,
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+ .height = 1080,
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+ .hmax = 0x0898,
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+ .data = imx290_1080p_settings,
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+ .data_size = ARRAY_SIZE(imx290_1080p_settings),
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+ .pixel_rate = 178200000,
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+ .link_freq_index = 0,
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+ },
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+ {
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+ .width = 1280,
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+ .height = 720,
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+ .hmax = 0x0ce4,
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+ .data = imx290_720p_settings,
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+ .data_size = ARRAY_SIZE(imx290_720p_settings),
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+ .pixel_rate = 178200000,
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+ .link_freq_index = 0,
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+ },
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+};
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+
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+static inline const struct imx290_mode *imx290_modes_ptr(const struct imx290 *imx290)
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+{
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+ /* We rely on imx290_probe() to ensure that nlanes is either 2 or 4 */
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+ if (imx290->nlanes == 2)
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+ return imx290_modes_2lanes;
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+ else
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+ return imx290_modes_4lanes;
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+}
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+
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+static inline int imx290_modes_num(const struct imx290 *imx290)
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+{
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+ if (imx290->nlanes == 2)
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+ return ARRAY_SIZE(imx290_modes_2lanes);
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+ else
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+ return ARRAY_SIZE(imx290_modes_4lanes);
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+}
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+
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static inline struct imx290 *to_imx290(struct v4l2_subdev *_sd)
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{
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return container_of(_sd, struct imx290, sd);
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@@ -450,9 +488,8 @@ static int imx290_set_fmt(struct v4l2_su
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mutex_lock(&imx290->lock);
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- mode = v4l2_find_nearest_size(imx290_modes,
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- ARRAY_SIZE(imx290_modes),
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- width, height,
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+ mode = v4l2_find_nearest_size(imx290_modes_ptr(imx290),
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+ imx290_modes_num(imx290), width, height,
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fmt->format.width, fmt->format.height);
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fmt->format.width = mode->width;
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@@ -522,6 +559,25 @@ static int imx290_write_current_format(s
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return 0;
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}
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+static int imx290_set_hmax(struct imx290 *imx290, u32 val)
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+{
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+ int ret;
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+
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+ ret = imx290_write_reg(imx290, IMX290_HMAX_LOW, (val & 0xff));
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+ if (ret) {
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+ dev_err(imx290->dev, "Error setting HMAX register\n");
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+ return ret;
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+ }
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+
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+ ret = imx290_write_reg(imx290, IMX290_HMAX_HIGH, ((val >> 8) & 0xff));
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+ if (ret) {
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+ dev_err(imx290->dev, "Error setting HMAX register\n");
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+ return ret;
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+ }
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+
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+ return 0;
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+}
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+
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/* Start streaming */
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static int imx290_start_streaming(struct imx290 *imx290)
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{
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@@ -550,6 +606,9 @@ static int imx290_start_streaming(struct
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dev_err(imx290->dev, "Could not set current mode\n");
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return ret;
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}
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+ ret = imx290_set_hmax(imx290, imx290->current_mode->hmax);
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+ if (ret < 0)
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+ return ret;
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/* Apply customized values from user */
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ret = v4l2_ctrl_handler_setup(imx290->sd.ctrl_handler);
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@@ -607,6 +666,49 @@ static int imx290_get_regulators(struct
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imx290->supplies);
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}
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+static int imx290_set_data_lanes(struct imx290 *imx290)
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+{
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+ int ret = 0, laneval, frsel;
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+
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+ switch (imx290->nlanes) {
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+ case 2:
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+ laneval = 0x01;
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+ frsel = 0x02;
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+ break;
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+ case 4:
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+ laneval = 0x03;
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+ frsel = 0x01;
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+ break;
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+ default:
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+ /*
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+ * We should never hit this since the data lane count is
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+ * validated in probe itself
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+ */
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+ dev_err(imx290->dev, "Lane configuration not supported\n");
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+ ret = -EINVAL;
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+ goto exit;
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+ }
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+
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+ ret = imx290_write_reg(imx290, IMX290_PHY_LANE_NUM, laneval);
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+ if (ret) {
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+ dev_err(imx290->dev, "Error setting Physical Lane number register\n");
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+ goto exit;
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+ }
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+
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+ ret = imx290_write_reg(imx290, IMX290_CSI_LANE_MODE, laneval);
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+ if (ret) {
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+ dev_err(imx290->dev, "Error setting CSI Lane mode register\n");
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+ goto exit;
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+ }
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+
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+ ret = imx290_write_reg(imx290, IMX290_FR_FDG_SEL, frsel);
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+ if (ret)
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+ dev_err(imx290->dev, "Error setting FR/FDG SEL register\n");
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+
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+exit:
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+ return ret;
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+}
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+
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static int imx290_power_on(struct device *dev)
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{
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struct i2c_client *client = to_i2c_client(dev);
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@@ -631,6 +733,9 @@ static int imx290_power_on(struct device
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gpiod_set_value_cansleep(imx290->rst_gpio, 0);
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usleep_range(30000, 31000);
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+ /* Set data lane count */
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+ imx290_set_data_lanes(imx290);
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+
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return 0;
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}
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@@ -677,6 +782,7 @@ static int imx290_probe(struct i2c_clien
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struct fwnode_handle *endpoint;
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struct imx290 *imx290;
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u32 xclk_freq;
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+ u32 default_pixel_rate;
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int ret;
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imx290 = devm_kzalloc(dev, sizeof(*imx290), GFP_KERNEL);
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@@ -703,6 +809,16 @@ static int imx290_probe(struct i2c_clien
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goto free_err;
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}
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+ /* Get number of data lanes */
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+ imx290->nlanes = imx290->ep.bus.mipi_csi2.num_data_lanes;
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+ if (imx290->nlanes != 2 && imx290->nlanes != 4) {
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+ dev_err(dev, "Invalid data lanes: %d\n", imx290->nlanes);
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+ ret = -EINVAL;
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+ goto free_err;
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+ }
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+
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+ dev_dbg(dev, "Using %u data lanes\n", imx290->nlanes);
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+
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if (!imx290->ep.nr_of_link_frequencies) {
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dev_err(dev, "link-frequency property not found in DT\n");
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ret = -EINVAL;
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@@ -780,10 +896,13 @@ static int imx290_probe(struct i2c_clien
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if (imx290->link_freq)
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imx290->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
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+ default_pixel_rate = imx290->nlanes == 2 ?
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+ imx290_modes_2lanes[0].pixel_rate :
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+ imx290_modes_4lanes[0].pixel_rate;
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imx290->pixel_rate = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
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V4L2_CID_PIXEL_RATE, 1,
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INT_MAX, 1,
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- imx290_modes[0].pixel_rate);
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+ default_pixel_rate);
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imx290->sd.ctrl_handler = &imx290->ctrls;
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