From: git@luigi311.com
To: linux-media@vger.kernel.org
Cc: dave.stevenson@raspberrypi.com, jacopo.mondi@ideasonboard.com,
mchehab@kernel.org, robh@kernel.org,
krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org,
shawnguo@kernel.org, s.hauer@pengutronix.de,
kernel@pengutronix.de, festevam@gmail.com,
sakari.ailus@linux.intel.com, devicetree@vger.kernel.org,
imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, pavel@ucw.cz,
phone-devel@vger.kernel.org, Luis Garcia <git@luigi311.com>
Subject: [PATCH v4 08/25] media: i2c: imx258: Add support for 24MHz clock
Date: Sun, 14 Apr 2024 14:34:46 -0600 [thread overview]
Message-ID: <20240414203503.18402-9-git@luigi311.com> (raw)
In-Reply-To: <20240414203503.18402-1-git@luigi311.com>
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
There's no reason why only a clock of 19.2MHz is supported.
Indeed this isn't even a frequency listed in the datasheet.
Add support for 24MHz as well.
The PLL settings result in slightly different link frequencies,
so parameterise those.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Luis Garcia <git@luigi311.com>
Reviewed-by: Pavel Machek <pavel@ucw.cz>
---
drivers/media/i2c/imx258.c | 130 +++++++++++++++++++++++++++++--------
1 file changed, 102 insertions(+), 28 deletions(-)
diff --git a/drivers/media/i2c/imx258.c b/drivers/media/i2c/imx258.c
index 351add1bc5d5..e4b1b3cbbde5 100644
--- a/drivers/media/i2c/imx258.c
+++ b/drivers/media/i2c/imx258.c
@@ -76,9 +76,6 @@
#define REG_CONFIG_MIRROR_FLIP 0x03
#define REG_CONFIG_FLIP_TEST_PATTERN 0x02
-/* Input clock frequency in Hz */
-#define IMX258_INPUT_CLOCK_FREQ 19200000
-
struct imx258_reg {
u16 address;
u8 val;
@@ -115,7 +112,9 @@ struct imx258_mode {
};
/* 4208x3120 needs 1267Mbps/lane, 4 lanes */
-static const struct imx258_reg mipi_data_rate_1267mbps[] = {
+static const struct imx258_reg mipi_1267mbps_19_2mhz[] = {
+ { 0x0136, 0x13 },
+ { 0x0137, 0x33 },
{ 0x0301, 0x05 },
{ 0x0303, 0x02 },
{ 0x0305, 0x03 },
@@ -133,7 +132,29 @@ static const struct imx258_reg mipi_data_rate_1267mbps[] = {
{ 0x0823, 0xCC },
};
-static const struct imx258_reg mipi_data_rate_640mbps[] = {
+static const struct imx258_reg mipi_1272mbps_24mhz[] = {
+ { 0x0136, 0x18 },
+ { 0x0137, 0x00 },
+ { 0x0301, 0x05 },
+ { 0x0303, 0x02 },
+ { 0x0305, 0x04 },
+ { 0x0306, 0x00 },
+ { 0x0307, 0xD4 },
+ { 0x0309, 0x0A },
+ { 0x030B, 0x01 },
+ { 0x030D, 0x02 },
+ { 0x030E, 0x00 },
+ { 0x030F, 0xD8 },
+ { 0x0310, 0x00 },
+ { 0x0820, 0x13 },
+ { 0x0821, 0x4C },
+ { 0x0822, 0xCC },
+ { 0x0823, 0xCC },
+};
+
+static const struct imx258_reg mipi_640mbps_19_2mhz[] = {
+ { 0x0136, 0x13 },
+ { 0x0137, 0x33 },
{ 0x0301, 0x05 },
{ 0x0303, 0x02 },
{ 0x0305, 0x03 },
@@ -151,9 +172,27 @@ static const struct imx258_reg mipi_data_rate_640mbps[] = {
{ 0x0823, 0x00 },
};
+static const struct imx258_reg mipi_642mbps_24mhz[] = {
+ { 0x0136, 0x18 },
+ { 0x0137, 0x00 },
+ { 0x0301, 0x05 },
+ { 0x0303, 0x02 },
+ { 0x0305, 0x04 },
+ { 0x0306, 0x00 },
+ { 0x0307, 0x6B },
+ { 0x0309, 0x0A },
+ { 0x030B, 0x01 },
+ { 0x030D, 0x02 },
+ { 0x030E, 0x00 },
+ { 0x030F, 0xD8 },
+ { 0x0310, 0x00 },
+ { 0x0820, 0x0A },
+ { 0x0821, 0x00 },
+ { 0x0822, 0x00 },
+ { 0x0823, 0x00 },
+};
+
static const struct imx258_reg mode_common_regs[] = {
- { 0x0136, 0x13 },
- { 0x0137, 0x33 },
{ 0x3051, 0x00 },
{ 0x3052, 0x00 },
{ 0x4E21, 0x14 },
@@ -313,10 +352,6 @@ static const char * const imx258_supply_name[] = {
#define IMX258_NUM_SUPPLIES ARRAY_SIZE(imx258_supply_name)
-/* Configurations for supported link frequencies */
-#define IMX258_LINK_FREQ_634MHZ 633600000ULL
-#define IMX258_LINK_FREQ_320MHZ 320000000ULL
-
enum {
IMX258_LINK_FREQ_1267MBPS,
IMX258_LINK_FREQ_640MBPS,
@@ -335,25 +370,48 @@ static u64 link_freq_to_pixel_rate(u64 f)
}
/* Menu items for LINK_FREQ V4L2 control */
-static const s64 link_freq_menu_items[] = {
- IMX258_LINK_FREQ_634MHZ,
- IMX258_LINK_FREQ_320MHZ,
+/* Configurations for supported link frequencies */
+static const s64 link_freq_menu_items_19_2[] = {
+ 633600000ULL,
+ 320000000ULL,
+};
+
+static const s64 link_freq_menu_items_24[] = {
+ 636000000ULL,
+ 321000000ULL,
};
/* Link frequency configs */
-static const struct imx258_link_freq_config link_freq_configs[] = {
+static const struct imx258_link_freq_config link_freq_configs_19_2[] = {
[IMX258_LINK_FREQ_1267MBPS] = {
.pixels_per_line = IMX258_PPL_DEFAULT,
.reg_list = {
- .num_of_regs = ARRAY_SIZE(mipi_data_rate_1267mbps),
- .regs = mipi_data_rate_1267mbps,
+ .num_of_regs = ARRAY_SIZE(mipi_1267mbps_19_2mhz),
+ .regs = mipi_1267mbps_19_2mhz,
}
},
[IMX258_LINK_FREQ_640MBPS] = {
.pixels_per_line = IMX258_PPL_DEFAULT,
.reg_list = {
- .num_of_regs = ARRAY_SIZE(mipi_data_rate_640mbps),
- .regs = mipi_data_rate_640mbps,
+ .num_of_regs = ARRAY_SIZE(mipi_640mbps_19_2mhz),
+ .regs = mipi_640mbps_19_2mhz,
+ }
+ },
+};
+
+static const struct imx258_link_freq_config link_freq_configs_24[] = {
+ [IMX258_LINK_FREQ_1267MBPS] = {
+ .pixels_per_line = IMX258_PPL_DEFAULT,
+ .reg_list = {
+ .num_of_regs = ARRAY_SIZE(mipi_1272mbps_24mhz),
+ .regs = mipi_1272mbps_24mhz,
+ }
+ },
+ [IMX258_LINK_FREQ_640MBPS] = {
+ .pixels_per_line = IMX258_PPL_DEFAULT,
+ .reg_list = {
+ .num_of_regs = ARRAY_SIZE(mipi_642mbps_24mhz),
+ .regs = mipi_642mbps_24mhz,
}
},
};
@@ -410,6 +468,9 @@ struct imx258 {
/* Current mode */
const struct imx258_mode *cur_mode;
+ const struct imx258_link_freq_config *link_freq_configs;
+ const s64 *link_freq_menu_items;
+
/*
* Mutex for serialized access:
* Protect sensor module set pad format and start/stop streaming safely.
@@ -713,7 +774,7 @@ static int imx258_set_pad_format(struct v4l2_subdev *sd,
imx258->cur_mode = mode;
__v4l2_ctrl_s_ctrl(imx258->link_freq, mode->link_freq_index);
- link_freq = link_freq_menu_items[mode->link_freq_index];
+ link_freq = imx258->link_freq_menu_items[mode->link_freq_index];
pixel_rate = link_freq_to_pixel_rate(link_freq);
__v4l2_ctrl_s_ctrl_int64(imx258->pixel_rate, pixel_rate);
/* Update limits and set FPS to default */
@@ -727,7 +788,7 @@ static int imx258_set_pad_format(struct v4l2_subdev *sd,
vblank_def);
__v4l2_ctrl_s_ctrl(imx258->vblank, vblank_def);
h_blank =
- link_freq_configs[mode->link_freq_index].pixels_per_line
+ imx258->link_freq_configs[mode->link_freq_index].pixels_per_line
- imx258->cur_mode->width;
__v4l2_ctrl_modify_range(imx258->hblank, h_blank,
h_blank, 1, h_blank);
@@ -747,7 +808,7 @@ static int imx258_start_streaming(struct imx258 *imx258)
/* Setup PLL */
link_freq_index = imx258->cur_mode->link_freq_index;
- reg_list = &link_freq_configs[link_freq_index].reg_list;
+ reg_list = &imx258->link_freq_configs[link_freq_index].reg_list;
ret = imx258_write_regs(imx258, reg_list->regs, reg_list->num_of_regs);
if (ret) {
dev_err(&client->dev, "%s failed to set plls\n", __func__);
@@ -946,9 +1007,9 @@ static int imx258_init_controls(struct imx258 *imx258)
imx258->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr,
&imx258_ctrl_ops,
V4L2_CID_LINK_FREQ,
- ARRAY_SIZE(link_freq_menu_items) - 1,
+ ARRAY_SIZE(link_freq_menu_items_19_2) - 1,
0,
- link_freq_menu_items);
+ imx258->link_freq_menu_items);
if (imx258->link_freq)
imx258->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
@@ -964,8 +1025,10 @@ static int imx258_init_controls(struct imx258 *imx258)
if (vflip)
vflip->flags |= V4L2_CTRL_FLAG_READ_ONLY;
- pixel_rate_max = link_freq_to_pixel_rate(link_freq_menu_items[0]);
- pixel_rate_min = link_freq_to_pixel_rate(link_freq_menu_items[1]);
+ pixel_rate_max =
+ link_freq_to_pixel_rate(imx258->link_freq_menu_items[0]);
+ pixel_rate_min =
+ link_freq_to_pixel_rate(imx258->link_freq_menu_items[1]);
/* By default, PIXEL_RATE is read only */
imx258->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx258_ctrl_ops,
V4L2_CID_PIXEL_RATE,
@@ -1086,8 +1149,19 @@ static int imx258_probe(struct i2c_client *client)
} else {
val = clk_get_rate(imx258->clk);
}
- if (val != IMX258_INPUT_CLOCK_FREQ) {
- dev_err(&client->dev, "input clock frequency not supported\n");
+
+ switch (val) {
+ case 19200000:
+ imx258->link_freq_configs = link_freq_configs_19_2;
+ imx258->link_freq_menu_items = link_freq_menu_items_19_2;
+ break;
+ case 24000000:
+ imx258->link_freq_configs = link_freq_configs_24;
+ imx258->link_freq_menu_items = link_freq_menu_items_24;
+ break;
+ default:
+ dev_err(&client->dev, "input clock frequency of %u not supported\n",
+ val);
return -EINVAL;
}
--
2.44.0
next prev parent reply other threads:[~2024-04-14 20:35 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-14 20:34 [PATCH v4 00/25] imx258 improvement series git
2024-04-14 20:34 ` [PATCH v4 01/25] media: i2c: imx258: Remove unused defines git
2024-04-14 20:34 ` [PATCH v4 02/25] media: i2c: imx258: Make image geometry meet sensor requirements git
2024-04-15 6:25 ` Alexander Stein
2024-04-15 16:38 ` Luis Garcia
2024-04-16 15:18 ` Dave Stevenson
2024-04-14 20:34 ` [PATCH v4 03/25] media: i2c: imx258: Disable digital cropping on binned modes git
2024-04-14 20:34 ` [PATCH v4 04/25] media: i2c: imx258: Remove redundant I2C writes git
2024-04-14 20:34 ` [PATCH v4 05/25] media: i2c: imx258: Add regulator control git
2024-04-14 20:34 ` [PATCH v4 06/25] media: i2c: imx258: Make V4L2_CID_VBLANK configurable git
2024-04-14 20:34 ` [PATCH v4 07/25] media: i2c: imx258: Split out common registers from the mode based ones git
2024-04-14 20:34 ` git [this message]
2024-04-14 20:34 ` [PATCH v4 09/25] media: i2c: imx258: Add support for running on 2 CSI data lanes git
2024-04-14 20:34 ` [PATCH v4 10/25] media: i2c: imx258: Follow normal V4L2 behaviours for clipping exposure git
2024-04-14 20:34 ` [PATCH v4 11/25] media: i2c: imx258: Add get_selection for pixel array information git
2024-04-14 20:34 ` [PATCH v4 12/25] media: i2c: imx258: Allow configuration of clock lane behaviour git
2024-04-14 20:34 ` [PATCH v4 13/25] media: i2c: imx258: Correct max FRM_LENGTH_LINES value git
2024-04-14 20:34 ` [PATCH v4 14/25] media: i2c: imx258: Issue reset before starting streaming git
2024-04-14 20:34 ` [PATCH v4 15/25] media: i2c: imx258: Set pixel_rate range to the same as the value git
2024-04-14 20:34 ` [PATCH v4 16/25] media: i2c: imx258: Support faster pixel rate on binned modes git
2024-04-14 20:34 ` [PATCH v4 17/25] dt-bindings: media: imx258: Rename to include vendor prefix git
2024-04-14 20:34 ` [PATCH v4 18/25] dt-bindings: media: imx258: Add alternate compatible strings git
2024-04-14 20:34 ` [PATCH v4 19/25] media: i2c: imx258: Change register settings for variants of the sensor git
2024-04-14 20:34 ` [PATCH v4 20/25] media: i2c: imx258: Make HFLIP and VFLIP controls writable git
2024-04-14 20:34 ` [PATCH v4 21/25] dt-bindings: media: imx258: Add binding for powerdown-gpio git
2024-04-14 20:35 ` [PATCH v4 22/25] media: i2c: imx258: Add support for powerdown gpio git
2024-04-14 20:35 ` [PATCH v4 23/25] media: i2c: imx258: Add support for reset gpio git
2024-04-15 16:00 ` Tommaso Merciai
2024-04-15 16:25 ` Luis Garcia
2024-04-14 20:35 ` [PATCH v4 24/25] media:i2c: imx258: Use v4l2_link_freq_to_bitmap helper git
2024-04-15 15:18 ` Tommaso Merciai
2024-04-15 16:27 ` Luis Garcia
2024-04-15 16:32 ` Tommaso Merciai
2024-04-14 20:35 ` [PATCH v4 25/25] media: i2c: imx258: Convert to new CCI register access helpers git
2024-04-15 14:47 ` Tommaso Merciai
2024-04-15 15:29 ` Luis Garcia
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