* [PATCH v10 01/15] media: ov8858: Extract digital gain programming
2026-10-02 8:57 [PATCH v10 00/15] media: Add Lenovo Yoga Book camera support Maurizio Casciano via B4 Relay
@ 2026-10-02 8:57 ` Maurizio Casciano via B4 Relay
2026-10-02 9:54 ` Andy Shevchenko
2026-10-02 8:57 ` [PATCH v10 02/15] media: ov8858: support 19.2 MHz clock and manual white balance Maurizio Casciano via B4 Relay
` (13 subsequent siblings)
14 siblings, 1 reply; 18+ messages in thread
From: Maurizio Casciano via B4 Relay @ 2026-10-02 8:57 UTC (permalink / raw)
To: Sakari Ailus, Jacopo Mondi, Nicholas Roth, Mauro Carvalho Chehab,
Bingbu Cao, Dan Scally, Hans de Goede, Andy Shevchenko,
Greg Kroah-Hartman
Cc: Andy Shevchenko, linux-media, linux-kernel, linux-staging
From: Maurizio Casciano <mauriziocasciano7@gmail.com>
Move the existing packed digital-gain register programming into a
helper so clock-specific gain handling can be added separately.
This is a pure refactoring: preserve both the register packing and the
explanatory comment without changing the bytes written to the sensor.
Assisted-by: LLM sparse
Signed-off-by: Maurizio Casciano <mauriziocasciano7@gmail.com>
---
drivers/media/i2c/ov8858.c | 30 ++++++++++++++++++------------
1 file changed, 18 insertions(+), 12 deletions(-)
diff --git a/drivers/media/i2c/ov8858.c b/drivers/media/i2c/ov8858.c
index 0bfc4350a8c9..2a0e2b08b9aa 100644
--- a/drivers/media/i2c/ov8858.c
+++ b/drivers/media/i2c/ov8858.c
@@ -1524,6 +1524,23 @@ static int ov8858_enable_test_pattern(struct ov8858 *ov8858, u32 pattern)
return ov8858_write(ov8858, OV8858_REG_TEST_PATTERN, val, NULL);
}
+static int ov8858_set_long_digital_gain(struct ov8858 *ov8858, u32 gain)
+{
+ u16 long_gain;
+
+ /*
+ * Digital gain is assembled as:
+ * 0x350a[7:0] = dgain[13:6]
+ * 0x350b[5:0] = dgain[5:0]
+ * Reassemble the control value to write it in one go.
+ */
+ long_gain = (gain & OV8858_LONG_DIGIGAIN_L_MASK) |
+ ((gain & OV8858_LONG_DIGIGAIN_H_MASK) <<
+ OV8858_LONG_DIGIGAIN_H_SHIFT);
+
+ return ov8858_write(ov8858, OV8858_REG_LONG_DIGIGAIN, long_gain, NULL);
+}
+
static int ov8858_set_ctrl(struct v4l2_ctrl *ctrl)
{
struct ov8858 *ov8858 = container_of(ctrl->handler,
@@ -1532,7 +1549,6 @@ static int ov8858_set_ctrl(struct v4l2_ctrl *ctrl)
struct i2c_client *client = v4l2_get_subdevdata(&ov8858->subdev);
struct v4l2_mbus_framefmt *format;
struct v4l2_subdev_state *state;
- u16 digi_gain;
s64 max_exp;
int ret;
@@ -1571,17 +1587,7 @@ static int ov8858_set_ctrl(struct v4l2_ctrl *ctrl)
ctrl->val, NULL);
break;
case V4L2_CID_DIGITAL_GAIN:
- /*
- * Digital gain is assembled as:
- * 0x350a[7:0] = dgain[13:6]
- * 0x350b[5:0] = dgain[5:0]
- * Reassemble the control value to write it in one go.
- */
- digi_gain = (ctrl->val & OV8858_LONG_DIGIGAIN_L_MASK)
- | ((ctrl->val & OV8858_LONG_DIGIGAIN_H_MASK) <<
- OV8858_LONG_DIGIGAIN_H_SHIFT);
- ret = ov8858_write(ov8858, OV8858_REG_LONG_DIGIGAIN,
- digi_gain, NULL);
+ ret = ov8858_set_long_digital_gain(ov8858, ctrl->val);
break;
case V4L2_CID_VBLANK:
ret = ov8858_write(ov8858, OV8858_REG_VTS,
--
2.53.0
^ permalink raw reply [flat|nested] 18+ messages in thread* Re: [PATCH v10 01/15] media: ov8858: Extract digital gain programming
2026-10-02 8:57 ` [PATCH v10 01/15] media: ov8858: Extract digital gain programming Maurizio Casciano via B4 Relay
@ 2026-10-02 9:54 ` Andy Shevchenko
0 siblings, 0 replies; 18+ messages in thread
From: Andy Shevchenko @ 2026-10-02 9:54 UTC (permalink / raw)
To: mauriziocasciano7
Cc: Sakari Ailus, Jacopo Mondi, Nicholas Roth, Mauro Carvalho Chehab,
Bingbu Cao, Dan Scally, Hans de Goede, Andy Shevchenko,
Greg Kroah-Hartman, linux-media, linux-kernel, linux-staging
On Fri, Oct 02, 2026 at 10:57:39AM +0200, Maurizio Casciano via B4 Relay wrote:
> Move the existing packed digital-gain register programming into a
> helper so clock-specific gain handling can be added separately.
>
> This is a pure refactoring: preserve both the register packing and the
> explanatory comment without changing the bytes written to the sensor.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
--
With Best Regards,
Andy Shevchenko
^ permalink raw reply [flat|nested] 18+ messages in thread
* [PATCH v10 02/15] media: ov8858: support 19.2 MHz clock and manual white balance
2026-10-02 8:57 [PATCH v10 00/15] media: Add Lenovo Yoga Book camera support Maurizio Casciano via B4 Relay
2026-10-02 8:57 ` [PATCH v10 01/15] media: ov8858: Extract digital gain programming Maurizio Casciano via B4 Relay
@ 2026-10-02 8:57 ` Maurizio Casciano via B4 Relay
2026-10-02 8:57 ` [PATCH v10 03/15] media: ov2740: Use C99 initializers for ACPI IDs Maurizio Casciano via B4 Relay
` (12 subsequent siblings)
14 siblings, 0 replies; 18+ messages in thread
From: Maurizio Casciano via B4 Relay @ 2026-10-02 8:57 UTC (permalink / raw)
To: Sakari Ailus, Jacopo Mondi, Nicholas Roth, Mauro Carvalho Chehab,
Bingbu Cao, Dan Scally, Hans de Goede, Andy Shevchenko,
Greg Kroah-Hartman
Cc: Andy Shevchenko, linux-media, linux-kernel, linux-staging
From: Maurizio Casciano <mauriziocasciano7@gmail.com>
Support both 19.2 MHz and 24 MHz input clocks. Move the PLL and
global-timing registers out of the common mode tables and select register
settings for the detected revision, lane count, input clock and 360 MHz
link frequency when starting the stream. Use the actual input-clock rate
when calculating the reset delay.
Add standard red and blue balance controls for the sensor's manual white
balance registers. V4L2 defines red and blue balance relative to green but
does not define a standard green-balance control, so keep green at unity.
Accumulate errors while programming all three channels.
The manual white-balance register definitions and programming follow
Intel's GPL-2.0 OV5670 driver, so retain its 2017 Intel copyright notice.
Signed-off-by: Maurizio Casciano <mauriziocasciano7@gmail.com>
Assisted-by: LLM sparse
---
drivers/media/i2c/ov8858.c | 183 ++++++++++++++++++++++++++++++++++++---------
1 file changed, 147 insertions(+), 36 deletions(-)
diff --git a/drivers/media/i2c/ov8858.c b/drivers/media/i2c/ov8858.c
index 2a0e2b08b9aa..64532237e8b5 100644
--- a/drivers/media/i2c/ov8858.c
+++ b/drivers/media/i2c/ov8858.c
@@ -3,10 +3,9 @@
* Copyright (C) 2023 Jacopo Mondi <jacopo.mondi@ideasonboard.com>
* Copyright (C) 2022 Nicholas Roth <nicholas@rothemail.net>
* Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd.
+ * Copyright (c) 2017 Intel Corporation.
*/
-#include <linux/unaligned.h>
-
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/device.h>
@@ -18,6 +17,8 @@
#include <linux/property.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
+#include <linux/unaligned.h>
+#include <linux/units.h>
#include <media/media-entity.h>
#include <media/v4l2-async.h>
@@ -28,8 +29,9 @@
#include <media/v4l2-mediabus.h>
#include <media/v4l2-subdev.h>
-#define OV8858_LINK_FREQ 360000000U
-#define OV8858_XVCLK_FREQ 24000000
+#define OV8858_LINK_FREQ (360 * HZ_PER_MHZ)
+#define OV8858_XVCLK_FREQ_24MHZ (24000 * HZ_PER_KHZ)
+#define OV8858_XVCLK_FREQ_19_2MHZ (19200 * HZ_PER_KHZ)
#define OV8858_REG_SIZE_SHIFT 16
#define OV8858_REG_ADDR_MASK 0xffff
@@ -59,6 +61,14 @@
#define OV8858_LONG_GAIN_STEP 1
#define OV8858_LONG_GAIN_DEFAULT 0x80
+#define OV8858_REG_MWB_RED_GAIN OV8858_REG_16BIT(0x5032)
+#define OV8858_REG_MWB_GREEN_GAIN OV8858_REG_16BIT(0x5034)
+#define OV8858_REG_MWB_BLUE_GAIN OV8858_REG_16BIT(0x5036)
+#define OV8858_MWB_GAIN_MIN 0x400
+#define OV8858_MWB_GAIN_MAX 0xfff
+#define OV8858_MWB_GAIN_STEP 1
+#define OV8858_MWB_GAIN_DEFAULT 0x400
+
#define OV8858_REG_LONG_DIGIGAIN OV8858_REG_16BIT(0x350a)
#define OV8858_LONG_DIGIGAIN_H_MASK 0x3fc0
#define OV8858_LONG_DIGIGAIN_L_MASK 0x3f
@@ -104,6 +114,7 @@ struct ov8858_mode {
struct ov8858 {
struct clk *xvclk;
+ unsigned long xvclk_rate;
struct gpio_desc *reset_gpio;
struct gpio_desc *pwdn_gpio;
struct regulator_bulk_data supplies[ARRAY_SIZE(ov8858_supply_names)];
@@ -115,12 +126,86 @@ struct ov8858 {
struct v4l2_ctrl *exposure;
struct v4l2_ctrl *hblank;
struct v4l2_ctrl *vblank;
+ struct v4l2_ctrl *red_balance;
+ struct v4l2_ctrl *blue_balance;
const struct regval *global_regs;
+ const struct regval *xvclk_regs;
unsigned int num_lanes;
};
+/* Keep input-clock programming separate from the common sensor setup. */
+static const struct regval ov8858_24mhz_360mhz_r1a_2lane[] = {
+ {0x0302, 0x1e},
+ {0x0303, 0x00},
+ {0x0304, 0x03},
+ {0x030e, 0x00},
+ {0x030f, 0x09},
+ {0x0312, 0x01},
+ {0x031e, 0x0c},
+ {0x4837, 0x16},
+ {REG_NULL, 0x00}
+};
+
+static const struct regval ov8858_24mhz_360mhz_r2a_2lane[] = {
+ {0x0302, 0x1e},
+ {0x0303, 0x00},
+ {0x0304, 0x03},
+ {0x030e, 0x02},
+ {0x030f, 0x04},
+ {0x0312, 0x03},
+ {0x031e, 0x0c},
+ {0x4837, 0x16},
+ {REG_NULL, 0x00}
+};
+
+static const struct regval ov8858_24mhz_360mhz_r2a_4lane[] = {
+ {0x0302, 0x1e},
+ {0x0303, 0x00},
+ {0x0304, 0x03},
+ {0x030e, 0x00},
+ {0x030f, 0x04},
+ {0x0312, 0x01},
+ {0x031e, 0x0c},
+ {0x4837, 0x16},
+ {REG_NULL, 0x00}
+};
+
+/*
+ * Register settings for a 19.2 MHz input and 360 MHz CSI-2 link.
+ *
+ * Besides the corrected sensor/MIPI PLL divisors, keep the final common
+ * black-level settings here. The per-mode tables retain their resolution
+ * dependent black-column anchors and window sizes.
+ */
+static const struct regval ov8858_19_2mhz_360mhz[] = {
+ {0x0300, 0x00},
+ {0x0302, 0x27},
+ {0x0303, 0x00},
+ {0x0304, 0x03},
+ {0x030b, 0x00},
+ {0x030d, 0x27},
+ {0x030e, 0x00},
+ {0x030f, 0x04},
+ {0x0312, 0x01},
+ {0x031e, 0x0c},
+ {0x3f08, 0x08},
+ {0x400a, 0x01},
+ {0x400d, 0x10},
+ {0x4011, 0x20},
+ {0x403e, 0x08},
+ {0x4040, 0x07},
+ {0x4041, 0xc6},
+ {0x4202, 0x00},
+ {0x4500, 0x58},
+ {0x470b, 0x28},
+ {0x4837, 0x15},
+ {0x58f4, 0x32},
+ {0x58f8, 0x3d},
+ {REG_NULL, 0x00}
+};
+
static inline struct ov8858 *sd_to_ov8858(struct v4l2_subdev *sd)
{
return container_of(sd, struct ov8858, subdev);
@@ -131,13 +216,6 @@ static const struct regval ov8858_global_regs_r1a[] = {
{0x0100, 0x00},
{0x0100, 0x00},
{0x0100, 0x00},
- {0x0302, 0x1e},
- {0x0303, 0x00},
- {0x0304, 0x03},
- {0x030e, 0x00},
- {0x030f, 0x09},
- {0x0312, 0x01},
- {0x031e, 0x0c},
{0x3600, 0x00},
{0x3601, 0x00},
{0x3602, 0x00},
@@ -370,7 +448,6 @@ static const struct regval ov8858_global_regs_r1a[] = {
{0x4600, 0x00},
{0x4601, 0xcb},
{0x481f, 0x32},
- {0x4837, 0x16},
{0x4850, 0x10},
{0x4851, 0x32},
{0x4b00, 0x2a},
@@ -405,13 +482,6 @@ static const struct regval ov8858_global_regs_r2a_2lane[] = {
*/
{0x0103, 0x01}, /* software reset */
{0x0100, 0x00}, /* software standby */
- {0x0302, 0x1e}, /* pll1_multi */
- {0x0303, 0x00}, /* pll1_divm */
- {0x0304, 0x03}, /* pll1_div_mipi */
- {0x030e, 0x02}, /* pll2_rdiv */
- {0x030f, 0x04}, /* pll2_divsp */
- {0x0312, 0x03}, /* pll2_pre_div0, pll2_r_divdac */
- {0x031e, 0x0c}, /* pll1_no_lat */
{0x3600, 0x00},
{0x3601, 0x00},
{0x3602, 0x00},
@@ -648,7 +718,6 @@ static const struct regval ov8858_global_regs_r2a_2lane[] = {
{0x4600, 0x00},
{0x4601, 0xcb},
{0x481f, 0x32}, /* clk prepare min */
- {0x4837, 0x16}, /* global timing */
{0x4850, 0x10}, /* lane 1 = 1, lane 0 = 0 */
{0x4851, 0x32}, /* lane 3 = 3, lane 2 = 2 */
{0x4b00, 0x2a},
@@ -810,13 +879,6 @@ static const struct regval ov8858_global_regs_r2a_4lane[] = {
{0x0103, 0x01}, /* software reset for OVTATool only */
{0x0103, 0x01}, /* software reset */
{0x0100, 0x00}, /* software standby */
- {0x0302, 0x1e}, /* pll1_multi */
- {0x0303, 0x00}, /* pll1_divm */
- {0x0304, 0x03}, /* pll1_div_mipi */
- {0x030e, 0x00}, /* pll2_rdiv */
- {0x030f, 0x04}, /* pll2_divsp */
- {0x0312, 0x01}, /* pll2_pre_div0, pll2_r_divdac */
- {0x031e, 0x0c}, /* pll1_no_lat */
{0x3600, 0x00},
{0x3601, 0x00},
{0x3602, 0x00},
@@ -1053,7 +1115,6 @@ static const struct regval ov8858_global_regs_r2a_4lane[] = {
{0x4600, 0x00},
{0x4601, 0xcb},
{0x481f, 0x32}, /* clk prepare min */
- {0x4837, 0x16}, /* global timing */
{0x4850, 0x10}, /* lane 1 = 1, lane 0 = 0 */
{0x4851, 0x32}, /* lane 3 = 3, lane 2 = 2 */
{0x4b00, 0x2a},
@@ -1345,6 +1406,10 @@ static int ov8858_start_stream(struct ov8858 *ov8858,
if (ret)
return ret;
+ ret = ov8858_write_array(ov8858, ov8858->xvclk_regs);
+ if (ret)
+ return ret;
+
/* 200 usec max to let PLL stabilize. */
fsleep(200);
@@ -1541,6 +1606,23 @@ static int ov8858_set_long_digital_gain(struct ov8858 *ov8858, u32 gain)
return ov8858_write(ov8858, OV8858_REG_LONG_DIGIGAIN, long_gain, NULL);
}
+static int ov8858_set_mwb_gains(struct ov8858 *ov8858)
+{
+ int ret = 0;
+
+ ov8858_write(ov8858, OV8858_REG_MWB_RED_GAIN,
+ ov8858->red_balance->val, &ret);
+ /*
+ * Green is the unity reference for the red and blue balance controls.
+ */
+ ov8858_write(ov8858, OV8858_REG_MWB_GREEN_GAIN,
+ OV8858_MWB_GAIN_DEFAULT, &ret);
+ ov8858_write(ov8858, OV8858_REG_MWB_BLUE_GAIN,
+ ov8858->blue_balance->val, &ret);
+
+ return ret;
+}
+
static int ov8858_set_ctrl(struct v4l2_ctrl *ctrl)
{
struct ov8858 *ov8858 = container_of(ctrl->handler,
@@ -1589,6 +1671,10 @@ static int ov8858_set_ctrl(struct v4l2_ctrl *ctrl)
case V4L2_CID_DIGITAL_GAIN:
ret = ov8858_set_long_digital_gain(ov8858, ctrl->val);
break;
+ case V4L2_CID_RED_BALANCE:
+ case V4L2_CID_BLUE_BALANCE:
+ ret = ov8858_set_mwb_gains(ov8858);
+ break;
case V4L2_CID_VBLANK:
ret = ov8858_write(ov8858, OV8858_REG_VTS,
ctrl->val + format->height, NULL);
@@ -1623,9 +1709,6 @@ static int ov8858_power_on(struct ov8858 *ov8858)
unsigned long delay_us;
int ret;
- if (clk_get_rate(ov8858->xvclk) != OV8858_XVCLK_FREQ)
- dev_warn(dev, "xvclk mismatched, modes are based on 24MHz\n");
-
ret = clk_prepare_enable(ov8858->xvclk);
if (ret < 0) {
dev_err(dev, "Failed to enable xvclk\n");
@@ -1644,7 +1727,7 @@ static int ov8858_power_on(struct ov8858 *ov8858)
* transaction, but a double sleep between the release of gpios
* helps with sporadic failures observed at probe time.
*/
- delay_us = DIV_ROUND_UP(8192, OV8858_XVCLK_FREQ / 1000 / 1000);
+ delay_us = DIV_ROUND_UP(8192, ov8858->xvclk_rate / HZ_PER_MHZ);
gpiod_set_value_cansleep(ov8858->reset_gpio, 0);
fsleep(delay_us);
@@ -1710,7 +1793,7 @@ static int ov8858_init_ctrls(struct ov8858 *ov8858)
u32 h_blank;
int ret;
- ret = v4l2_ctrl_handler_init(handler, 10);
+ ret = v4l2_ctrl_handler_init(handler, 12);
if (ret)
return ret;
@@ -1752,6 +1835,19 @@ static int ov8858_init_ctrls(struct ov8858 *ov8858)
OV8858_LONG_DIGIGAIN_STEP,
OV8858_LONG_DIGIGAIN_DEFAULT);
+ ov8858->red_balance =
+ v4l2_ctrl_new_std(handler, &ov8858_ctrl_ops,
+ V4L2_CID_RED_BALANCE,
+ OV8858_MWB_GAIN_MIN, OV8858_MWB_GAIN_MAX,
+ OV8858_MWB_GAIN_STEP,
+ OV8858_MWB_GAIN_DEFAULT);
+ ov8858->blue_balance =
+ v4l2_ctrl_new_std(handler, &ov8858_ctrl_ops,
+ V4L2_CID_BLUE_BALANCE,
+ OV8858_MWB_GAIN_MIN, OV8858_MWB_GAIN_MAX,
+ OV8858_MWB_GAIN_STEP,
+ OV8858_MWB_GAIN_DEFAULT);
+
v4l2_ctrl_new_std_menu_items(handler, &ov8858_ctrl_ops,
V4L2_CID_TEST_PATTERN,
ARRAY_SIZE(ov8858_test_pattern_menu) - 1,
@@ -1805,15 +1901,20 @@ static int ov8858_check_sensor_id(struct ov8858 *ov8858)
if (id == OV8858_R2A) {
/* R2A supports 2 and 4 lanes modes. */
- ov8858->global_regs = ov8858->num_lanes == 4
- ? ov8858_global_regs_r2a_4lane
- : ov8858_global_regs_r2a_2lane;
+ if (ov8858->num_lanes == 4) {
+ ov8858->global_regs = ov8858_global_regs_r2a_4lane;
+ ov8858->xvclk_regs = ov8858_24mhz_360mhz_r2a_4lane;
+ } else {
+ ov8858->global_regs = ov8858_global_regs_r2a_2lane;
+ ov8858->xvclk_regs = ov8858_24mhz_360mhz_r2a_2lane;
+ }
} else if (ov8858->num_lanes == 2) {
/*
* R1A only supports 2 lanes mode and it's only partially
* supported.
*/
ov8858->global_regs = ov8858_global_regs_r1a;
+ ov8858->xvclk_regs = ov8858_24mhz_360mhz_r1a_2lane;
dev_warn(&client->dev, "R1A may not work well!\n");
} else {
dev_err(&client->dev,
@@ -1821,6 +1922,9 @@ static int ov8858_check_sensor_id(struct ov8858 *ov8858)
return -EINVAL;
}
+ if (ov8858->xvclk_rate == OV8858_XVCLK_FREQ_19_2MHZ)
+ ov8858->xvclk_regs = ov8858_19_2mhz_360mhz;
+
return 0;
}
@@ -1888,6 +1992,13 @@ static int ov8858_probe(struct i2c_client *client)
return dev_err_probe(dev, PTR_ERR(ov8858->xvclk),
"Failed to get xvclk\n");
+ ov8858->xvclk_rate = clk_get_rate(ov8858->xvclk);
+ if (ov8858->xvclk_rate != OV8858_XVCLK_FREQ_19_2MHZ &&
+ ov8858->xvclk_rate != OV8858_XVCLK_FREQ_24MHZ)
+ return dev_err_probe(dev, -EINVAL,
+ "Unsupported xvclk rate %lu Hz\n",
+ ov8858->xvclk_rate);
+
ov8858->reset_gpio = devm_gpiod_get_optional(dev, "reset",
GPIOD_OUT_HIGH);
if (IS_ERR(ov8858->reset_gpio))
--
2.53.0
^ permalink raw reply [flat|nested] 18+ messages in thread* [PATCH v10 03/15] media: ov2740: Use C99 initializers for ACPI IDs
2026-10-02 8:57 [PATCH v10 00/15] media: Add Lenovo Yoga Book camera support Maurizio Casciano via B4 Relay
2026-10-02 8:57 ` [PATCH v10 01/15] media: ov8858: Extract digital gain programming Maurizio Casciano via B4 Relay
2026-10-02 8:57 ` [PATCH v10 02/15] media: ov8858: support 19.2 MHz clock and manual white balance Maurizio Casciano via B4 Relay
@ 2026-10-02 8:57 ` Maurizio Casciano via B4 Relay
2026-10-02 8:57 ` [PATCH v10 04/15] media: ov2740: Add OVTI2740 ACPI ID Maurizio Casciano via B4 Relay
` (11 subsequent siblings)
14 siblings, 0 replies; 18+ messages in thread
From: Maurizio Casciano via B4 Relay @ 2026-10-02 8:57 UTC (permalink / raw)
To: Sakari Ailus, Jacopo Mondi, Nicholas Roth, Mauro Carvalho Chehab,
Bingbu Cao, Dan Scally, Hans de Goede, Andy Shevchenko,
Greg Kroah-Hartman
Cc: Andy Shevchenko, linux-media, linux-kernel, linux-staging
From: Maurizio Casciano <mauriziocasciano7@gmail.com>
Use designated initializers and the standard empty sentinel style
before adding firmware IDs.
Suggested-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Assisted-by: LLM sparse
Signed-off-by: Maurizio Casciano <mauriziocasciano7@gmail.com>
---
drivers/media/i2c/ov2740.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/media/i2c/ov2740.c b/drivers/media/i2c/ov2740.c
index 536325bb7b92..64a85735c1b8 100644
--- a/drivers/media/i2c/ov2740.c
+++ b/drivers/media/i2c/ov2740.c
@@ -1462,10 +1462,9 @@ static DEFINE_RUNTIME_DEV_PM_OPS(ov2740_pm_ops, ov2740_suspend, ov2740_resume,
NULL);
static const struct acpi_device_id ov2740_acpi_ids[] = {
- {"INT3474"},
- {}
+ { .id = "INT3474" },
+ { }
};
-
MODULE_DEVICE_TABLE(acpi, ov2740_acpi_ids);
static struct i2c_driver ov2740_i2c_driver = {
--
2.53.0
^ permalink raw reply [flat|nested] 18+ messages in thread* [PATCH v10 04/15] media: ov2740: Add OVTI2740 ACPI ID
2026-10-02 8:57 [PATCH v10 00/15] media: Add Lenovo Yoga Book camera support Maurizio Casciano via B4 Relay
` (2 preceding siblings ...)
2026-10-02 8:57 ` [PATCH v10 03/15] media: ov2740: Use C99 initializers for ACPI IDs Maurizio Casciano via B4 Relay
@ 2026-10-02 8:57 ` Maurizio Casciano via B4 Relay
2026-10-02 8:57 ` [PATCH v10 05/15] media: ov8858: Add INT3477 " Maurizio Casciano via B4 Relay
` (10 subsequent siblings)
14 siblings, 0 replies; 18+ messages in thread
From: Maurizio Casciano via B4 Relay @ 2026-10-02 8:57 UTC (permalink / raw)
To: Sakari Ailus, Jacopo Mondi, Nicholas Roth, Mauro Carvalho Chehab,
Bingbu Cao, Dan Scally, Hans de Goede, Andy Shevchenko,
Greg Kroah-Hartman
Cc: Andy Shevchenko, linux-media, linux-kernel, linux-staging
From: Maurizio Casciano <mauriziocasciano7@gmail.com>
Firmware may enumerate OV2740 image sensors using the OVTI2740 ACPI ID.
Add it to the existing ACPI match table.
Signed-off-by: Maurizio Casciano <mauriziocasciano7@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
---
drivers/media/i2c/ov2740.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/media/i2c/ov2740.c b/drivers/media/i2c/ov2740.c
index 64a85735c1b8..830f5857d73f 100644
--- a/drivers/media/i2c/ov2740.c
+++ b/drivers/media/i2c/ov2740.c
@@ -1463,6 +1463,7 @@ static DEFINE_RUNTIME_DEV_PM_OPS(ov2740_pm_ops, ov2740_suspend, ov2740_resume,
static const struct acpi_device_id ov2740_acpi_ids[] = {
{ .id = "INT3474" },
+ { .id = "OVTI2740" },
{ }
};
MODULE_DEVICE_TABLE(acpi, ov2740_acpi_ids);
--
2.53.0
^ permalink raw reply [flat|nested] 18+ messages in thread* [PATCH v10 05/15] media: ov8858: Add INT3477 ACPI ID
2026-10-02 8:57 [PATCH v10 00/15] media: Add Lenovo Yoga Book camera support Maurizio Casciano via B4 Relay
` (3 preceding siblings ...)
2026-10-02 8:57 ` [PATCH v10 04/15] media: ov2740: Add OVTI2740 ACPI ID Maurizio Casciano via B4 Relay
@ 2026-10-02 8:57 ` Maurizio Casciano via B4 Relay
2026-10-02 8:57 ` [PATCH v10 06/15] media: intel: ipu-bridge: Add Yoga Book camera sensors Maurizio Casciano via B4 Relay
` (9 subsequent siblings)
14 siblings, 0 replies; 18+ messages in thread
From: Maurizio Casciano via B4 Relay @ 2026-10-02 8:57 UTC (permalink / raw)
To: Sakari Ailus, Jacopo Mondi, Nicholas Roth, Mauro Carvalho Chehab,
Bingbu Cao, Dan Scally, Hans de Goede, Andy Shevchenko,
Greg Kroah-Hartman
Cc: Andy Shevchenko, linux-media, linux-kernel, linux-staging
From: Maurizio Casciano <mauriziocasciano7@gmail.com>
Firmware may use INT3477 as the ACPI hardware ID for an OV8858 image
sensor. Add an ACPI match table for that ID.
Signed-off-by: Maurizio Casciano <mauriziocasciano7@gmail.com>
---
drivers/media/i2c/ov8858.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/media/i2c/ov8858.c b/drivers/media/i2c/ov8858.c
index 64532237e8b5..c747ecd9e908 100644
--- a/drivers/media/i2c/ov8858.c
+++ b/drivers/media/i2c/ov8858.c
@@ -6,6 +6,7 @@
* Copyright (c) 2017 Intel Corporation.
*/
+#include <linux/acpi.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/device.h>
@@ -2093,6 +2094,12 @@ static void ov8858_remove(struct i2c_client *client)
pm_runtime_set_suspended(&client->dev);
}
+static const struct acpi_device_id ov8858_acpi_match[] = {
+ { .id = "INT3477" },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, ov8858_acpi_match);
+
static const struct of_device_id ov8858_of_match[] = {
{ .compatible = "ovti,ov8858" },
{ /* sentinel */ },
@@ -2103,6 +2110,7 @@ static struct i2c_driver ov8858_i2c_driver = {
.driver = {
.name = "ov8858",
.pm = &ov8858_pm_ops,
+ .acpi_match_table = ACPI_PTR(ov8858_acpi_match),
.of_match_table = ov8858_of_match,
},
.probe = ov8858_probe,
--
2.53.0
^ permalink raw reply [flat|nested] 18+ messages in thread* [PATCH v10 06/15] media: intel: ipu-bridge: Add Yoga Book camera sensors
2026-10-02 8:57 [PATCH v10 00/15] media: Add Lenovo Yoga Book camera support Maurizio Casciano via B4 Relay
` (4 preceding siblings ...)
2026-10-02 8:57 ` [PATCH v10 05/15] media: ov8858: Add INT3477 " Maurizio Casciano via B4 Relay
@ 2026-10-02 8:57 ` Maurizio Casciano via B4 Relay
2026-10-02 8:57 ` [PATCH v10 07/15] media: atomisp: Add Yoga Book camera configuration Maurizio Casciano via B4 Relay
` (8 subsequent siblings)
14 siblings, 0 replies; 18+ messages in thread
From: Maurizio Casciano via B4 Relay @ 2026-10-02 8:57 UTC (permalink / raw)
To: Sakari Ailus, Jacopo Mondi, Nicholas Roth, Mauro Carvalho Chehab,
Bingbu Cao, Dan Scally, Hans de Goede, Andy Shevchenko,
Greg Kroah-Hartman
Cc: Andy Shevchenko, linux-media, linux-kernel, linux-staging
From: Maurizio Casciano <mauriziocasciano7@gmail.com>
The Yoga Book YB1-X91 uses INT3477 for its OV8858 rear sensor and
OVTI2740 for its OV2740 front sensor. Add link frequencies consumed by
the sensor drivers when the IPU bridge constructs software endpoints.
This supplies endpoint data only; it does not establish that either
sensor can stream on the Yoga Book hardware.
Signed-off-by: Maurizio Casciano <mauriziocasciano7@gmail.com>
Assisted-by: LLM sparse
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
---
drivers/media/pci/intel/ipu-bridge.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/media/pci/intel/ipu-bridge.c b/drivers/media/pci/intel/ipu-bridge.c
index 8bd20089636e..62852fe1a406 100644
--- a/drivers/media/pci/intel/ipu-bridge.c
+++ b/drivers/media/pci/intel/ipu-bridge.c
@@ -78,6 +78,8 @@ static const struct ipu_sensor_config ipu_supported_sensors[] = {
IPU_SENSOR_CONFIG("INT33F0", 1, 384000000),
/* Omnivision OV2740 */
IPU_SENSOR_CONFIG("INT3474", 1, 180000000),
+ /* Omnivision OV8858 */
+ IPU_SENSOR_CONFIG("INT3477", 1, 360000000),
/* Omnivision OV5670 */
IPU_SENSOR_CONFIG("INT3479", 1, 422400000),
/* Omnivision OV8865 */
@@ -109,6 +111,8 @@ static const struct ipu_sensor_config ipu_supported_sensors[] = {
IPU_SENSOR_CONFIG("OVTIDB10", 1, 560000000),
/* Omnivision OV2680 */
IPU_SENSOR_CONFIG("OVTI2680", 1, 331200000),
+ /* Omnivision OV2740 */
+ IPU_SENSOR_CONFIG("OVTI2740", 1, 360000000),
/* Omnivision OV5675 */
IPU_SENSOR_CONFIG("OVTI5675", 1, 450000000),
/* Omnivision OV5693 */
--
2.53.0
^ permalink raw reply [flat|nested] 18+ messages in thread* [PATCH v10 07/15] media: atomisp: Add Yoga Book camera configuration
2026-10-02 8:57 [PATCH v10 00/15] media: Add Lenovo Yoga Book camera support Maurizio Casciano via B4 Relay
` (5 preceding siblings ...)
2026-10-02 8:57 ` [PATCH v10 06/15] media: intel: ipu-bridge: Add Yoga Book camera sensors Maurizio Casciano via B4 Relay
@ 2026-10-02 8:57 ` Maurizio Casciano via B4 Relay
2026-10-02 8:57 ` [PATCH v10 08/15] media: ov2740: support 288 MHz link frequency Maurizio Casciano via B4 Relay
` (7 subsequent siblings)
14 siblings, 0 replies; 18+ messages in thread
From: Maurizio Casciano via B4 Relay @ 2026-10-02 8:57 UTC (permalink / raw)
To: Sakari Ailus, Jacopo Mondi, Nicholas Roth, Mauro Carvalho Chehab,
Bingbu Cao, Dan Scally, Hans de Goede, Andy Shevchenko,
Greg Kroah-Hartman
Cc: Andy Shevchenko, linux-media, linux-kernel, linux-staging
From: Maurizio Casciano <mauriziocasciano7@gmail.com>
The Yoga Book YB1-X91 firmware lacks usable AtomISP configuration for
both cameras. Rear INT3477 OV8858 uses four CSI-2 lanes and a WV517S
actuator, while the front OVTI2740 firmware reports the wrong lane
count.
Add the rear sensor configuration and a DMI-scoped two-lane override
for OVTI2740:00. Add the front sensor configuration separately once
its link frequency can be supplied at the same time.
Signed-off-by: Maurizio Casciano <mauriziocasciano7@gmail.com>
Assisted-by: LLM sparse
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
---
.../staging/media/atomisp/pci/atomisp_csi2_bridge.c | 19 ++++++++++++++++++-
1 file changed, 18 insertions(+), 1 deletion(-)
diff --git a/drivers/staging/media/atomisp/pci/atomisp_csi2_bridge.c b/drivers/staging/media/atomisp/pci/atomisp_csi2_bridge.c
index cca91c6d71a5..56da454f0d9e 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_csi2_bridge.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_csi2_bridge.c
@@ -74,6 +74,12 @@ static struct gmin_cfg_var lenovo_ideapad_miix_310_vars[] = {
{}
};
+static struct gmin_cfg_var lenovo_yogabook_x91_vars[] = {
+ /* The vendor driver and sensor modes use two CSI data lanes. */
+ { "OVTI2740:00", "CsiLanes", "2" },
+ {}
+};
+
static struct gmin_cfg_var xiaomi_mipad2_vars[] = {
/* _DSM contains the wrong CsiPort for the front facing OV5693 sensor */
{ "INT33BE:00", "CsiPort", "0" },
@@ -83,6 +89,14 @@ static struct gmin_cfg_var xiaomi_mipad2_vars[] = {
};
static const struct dmi_system_id gmin_cfg_dmi_overrides[] = {
+ {
+ /* Lenovo Yoga Book X91L */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Lenovo YB1-X91L"),
+ },
+ .driver_data = lenovo_yogabook_x91_vars,
+ },
{
/* Lenovo Ideapad Miix 310 */
.matches = {
@@ -359,7 +373,10 @@ static const struct acpi_device_id atomisp_sensor_configs[] = {
* the sensor fails to start streaming when instantiating
* an i2c-client for the VCM, so it is disabled for now.
*/
- ATOMISP_SENSOR_CONFIG("INT33BE", 2, false), /* OV5693 */
+ /* OV5693 */
+ ATOMISP_SENSOR_CONFIG("INT33BE", 2, false),
+ /* OV8858 */
+ ATOMISP_SENSOR_CONFIG("INT3477", 4, true),
{}
};
--
2.53.0
^ permalink raw reply [flat|nested] 18+ messages in thread* [PATCH v10 08/15] media: ov2740: support 288 MHz link frequency
2026-10-02 8:57 [PATCH v10 00/15] media: Add Lenovo Yoga Book camera support Maurizio Casciano via B4 Relay
` (6 preceding siblings ...)
2026-10-02 8:57 ` [PATCH v10 07/15] media: atomisp: Add Yoga Book camera configuration Maurizio Casciano via B4 Relay
@ 2026-10-02 8:57 ` Maurizio Casciano via B4 Relay
2026-10-02 8:57 ` [PATCH v10 09/15] media: intel: ipu-bridge: select OV2740 frequency by IPU ID Maurizio Casciano via B4 Relay
` (6 subsequent siblings)
14 siblings, 0 replies; 18+ messages in thread
From: Maurizio Casciano via B4 Relay @ 2026-10-02 8:57 UTC (permalink / raw)
To: Sakari Ailus, Jacopo Mondi, Nicholas Roth, Mauro Carvalho Chehab,
Bingbu Cao, Dan Scally, Hans de Goede, Andy Shevchenko,
Greg Kroah-Hartman
Cc: Andy Shevchenko, linux-media, linux-kernel, linux-staging
From: Maurizio Casciano <mauriziocasciano7@gmail.com>
The Lenovo Yoga Book YB1-X91 front camera uses two CSI-2 lanes at a
288 MHz link frequency. Add the matching PLL configuration and mode
timing.
Reuse the existing 1932x1092 crop and mode register list so the Bayer
order remains SGRBG across link frequencies. Cropping the CSI-2
receiver output to a smaller processed frame is a userspace pipeline
decision.
Signed-off-by: Maurizio Casciano <mauriziocasciano7@gmail.com>
Assisted-by: LLM sparse
---
drivers/media/i2c/ov2740.c | 43 +++++++++++++++++++++++++++++++++++++++++--
1 file changed, 41 insertions(+), 2 deletions(-)
diff --git a/drivers/media/i2c/ov2740.c b/drivers/media/i2c/ov2740.c
index 830f5857d73f..ca33ef30267d 100644
--- a/drivers/media/i2c/ov2740.c
+++ b/drivers/media/i2c/ov2740.c
@@ -12,12 +12,14 @@
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/unaligned.h>
+#include <linux/units.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-fwnode.h>
-#define OV2740_LINK_FREQ_360MHZ 360000000ULL
-#define OV2740_LINK_FREQ_180MHZ 180000000ULL
+#define OV2740_LINK_FREQ_360MHZ (360 * HZ_PER_MHZ)
+#define OV2740_LINK_FREQ_288MHZ (288 * HZ_PER_MHZ)
+#define OV2740_LINK_FREQ_180MHZ (180 * HZ_PER_MHZ)
#define OV2740_SCLK 72000000LL
#define OV2740_MCLK 19200000
#define OV2740_DATA_LANES 2
@@ -91,6 +93,7 @@ struct nvm_data {
enum {
OV2740_LINK_FREQ_360MHZ_INDEX,
+ OV2740_LINK_FREQ_288MHZ_INDEX,
OV2740_LINK_FREQ_180MHZ_INDEX,
};
@@ -142,6 +145,14 @@ static const struct ov2740_reg mipi_data_rate_720mbps[] = {
{0x0312, 0x11},
};
+static const struct ov2740_reg mipi_data_rate_576mbps[] = {
+ {0x0302, 0x1e},
+ {0x0303, 0x00},
+ {0x030d, 0x1e},
+ {0x030e, 0x02},
+ {0x0312, 0x01},
+};
+
static const struct ov2740_reg mipi_data_rate_360mbps[] = {
{0x0302, 0x4b},
{0x0303, 0x01},
@@ -468,6 +479,7 @@ static const char * const ov2740_test_pattern_menu[] = {
static const s64 link_freq_menu_items[] = {
OV2740_LINK_FREQ_360MHZ,
+ OV2740_LINK_FREQ_288MHZ,
OV2740_LINK_FREQ_180MHZ,
};
@@ -478,6 +490,12 @@ static const struct ov2740_link_freq_config link_freq_configs[] = {
.regs = mipi_data_rate_720mbps,
}
},
+ [OV2740_LINK_FREQ_288MHZ_INDEX] = {
+ .reg_list = {
+ .num_of_regs = ARRAY_SIZE(mipi_data_rate_576mbps),
+ .regs = mipi_data_rate_576mbps,
+ }
+ },
[OV2740_LINK_FREQ_180MHZ_INDEX] = {
.reg_list = {
.num_of_regs = ARRAY_SIZE(mipi_data_rate_360mbps),
@@ -502,6 +520,22 @@ static const struct ov2740_mode supported_modes_360mhz[] = {
},
};
+static const struct ov2740_mode supported_modes_288mhz[] = {
+ {
+ .width = 1932,
+ .height = 1092,
+ .hts = 2160,
+ .vts_min = 1776,
+ .vts_def = 1776,
+ .vts_max = 32767,
+ .reg_list = {
+ .num_of_regs = ARRAY_SIZE(mode_1932x1092_regs_360mhz),
+ .regs = mode_1932x1092_regs_360mhz,
+ },
+ .link_freq_index = OV2740_LINK_FREQ_288MHZ_INDEX,
+ },
+};
+
static const struct ov2740_mode supported_modes_180mhz[] = {
{
.width = 1932,
@@ -1179,6 +1213,11 @@ static int ov2740_check_hwcfg(struct ov2740 *ov2740)
ov2740->supported_modes_count =
ARRAY_SIZE(supported_modes_360mhz);
break;
+ case OV2740_LINK_FREQ_288MHZ_INDEX:
+ ov2740->supported_modes = supported_modes_288mhz;
+ ov2740->supported_modes_count =
+ ARRAY_SIZE(supported_modes_288mhz);
+ break;
case OV2740_LINK_FREQ_180MHZ_INDEX:
ov2740->supported_modes = supported_modes_180mhz;
ov2740->supported_modes_count =
--
2.53.0
^ permalink raw reply [flat|nested] 18+ messages in thread* [PATCH v10 09/15] media: intel: ipu-bridge: select OV2740 frequency by IPU ID
2026-10-02 8:57 [PATCH v10 00/15] media: Add Lenovo Yoga Book camera support Maurizio Casciano via B4 Relay
` (7 preceding siblings ...)
2026-10-02 8:57 ` [PATCH v10 08/15] media: ov2740: support 288 MHz link frequency Maurizio Casciano via B4 Relay
@ 2026-10-02 8:57 ` Maurizio Casciano via B4 Relay
2026-10-03 14:41 ` Andy Shevchenko
2026-10-02 8:57 ` [PATCH v10 10/15] media: atomisp: derive CSI-2 timing from sensor link frequency Maurizio Casciano via B4 Relay
` (5 subsequent siblings)
14 siblings, 1 reply; 18+ messages in thread
From: Maurizio Casciano via B4 Relay @ 2026-10-02 8:57 UTC (permalink / raw)
To: Sakari Ailus, Jacopo Mondi, Nicholas Roth, Mauro Carvalho Chehab,
Bingbu Cao, Dan Scally, Hans de Goede, Andy Shevchenko,
Greg Kroah-Hartman
Cc: Andy Shevchenko, linux-media, linux-kernel, linux-staging
From: Maurizio Casciano <mauriziocasciano7@gmail.com>
The OV2740 connected to the Cherry Trail AtomISP uses a 288 MHz link,
while the generic OVTI2740 configuration uses 360 MHz.
Use the bridge's existing PCI-device matching mechanism to add a
Cherry Trail-specific OVTI2740 entry before the generic fallback. This
keeps the platform distinction in the bridge and avoids adding a second
per-sensor link-frequency override path.
Suggested-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Maurizio Casciano <mauriziocasciano7@gmail.com>
Assisted-by: LLM
---
drivers/media/pci/intel/ipu-bridge.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/media/pci/intel/ipu-bridge.c b/drivers/media/pci/intel/ipu-bridge.c
index 62852fe1a406..1a133194cbc0 100644
--- a/drivers/media/pci/intel/ipu-bridge.c
+++ b/drivers/media/pci/intel/ipu-bridge.c
@@ -21,6 +21,8 @@
#define ADEV_DEV(adev) ACPI_PTR(&((adev)->dev))
+#define PCI_DEVICE_ID_INTEL_ATOMISP_CHT 0x22b8
+
/*
* 92335fcf-3203-4472-af93-7b4453ac29da
*
@@ -58,6 +60,11 @@ static const u16 ipu6_ov5693_ncont_clk[] = {
0
};
+static const u16 atomisp_cht_pci_ids[] = {
+ PCI_DEVICE_ID_INTEL_ATOMISP_CHT,
+ 0
+};
+
static const struct ipu_sensor_config ipu_supported_sensors[] = {
/* Himax HM1092 */
IPU_SENSOR_CONFIG("HIMX1092", 2, 180000000, 180480000),
@@ -112,6 +119,8 @@ static const struct ipu_sensor_config ipu_supported_sensors[] = {
/* Omnivision OV2680 */
IPU_SENSOR_CONFIG("OVTI2680", 1, 331200000),
/* Omnivision OV2740 */
+ IPU_SENSOR_CONFIG_MATCH_FL("OVTI2740", atomisp_cht_pci_ids, 0,
+ 1, 288000000),
IPU_SENSOR_CONFIG("OVTI2740", 1, 360000000),
/* Omnivision OV5675 */
IPU_SENSOR_CONFIG("OVTI5675", 1, 450000000),
--
2.53.0
^ permalink raw reply [flat|nested] 18+ messages in thread* Re: [PATCH v10 09/15] media: intel: ipu-bridge: select OV2740 frequency by IPU ID
2026-10-02 8:57 ` [PATCH v10 09/15] media: intel: ipu-bridge: select OV2740 frequency by IPU ID Maurizio Casciano via B4 Relay
@ 2026-10-03 14:41 ` Andy Shevchenko
0 siblings, 0 replies; 18+ messages in thread
From: Andy Shevchenko @ 2026-10-03 14:41 UTC (permalink / raw)
To: mauriziocasciano7
Cc: Sakari Ailus, Jacopo Mondi, Nicholas Roth, Mauro Carvalho Chehab,
Bingbu Cao, Dan Scally, Hans de Goede, Andy Shevchenko,
Greg Kroah-Hartman, linux-media, linux-kernel, linux-staging
On Fri, Oct 02, 2026 at 10:57:47AM +0200, Maurizio Casciano via B4 Relay wrote:
> The OV2740 connected to the Cherry Trail AtomISP uses a 288 MHz link,
> while the generic OVTI2740 configuration uses 360 MHz.
>
> Use the bridge's existing PCI-device matching mechanism to add a
> Cherry Trail-specific OVTI2740 entry before the generic fallback. This
> keeps the platform distinction in the bridge and avoids adding a second
> per-sensor link-frequency override path.
...
> +#define PCI_DEVICE_ID_INTEL_ATOMISP_CHT 0x22b8
I hope my 20261002094813.856439-1-andriy.shevchenko@linux.intel.com
will land in media tree before yours.
--
With Best Regards,
Andy Shevchenko
^ permalink raw reply [flat|nested] 18+ messages in thread
* [PATCH v10 10/15] media: atomisp: derive CSI-2 timing from sensor link frequency
2026-10-02 8:57 [PATCH v10 00/15] media: Add Lenovo Yoga Book camera support Maurizio Casciano via B4 Relay
` (8 preceding siblings ...)
2026-10-02 8:57 ` [PATCH v10 09/15] media: intel: ipu-bridge: select OV2740 frequency by IPU ID Maurizio Casciano via B4 Relay
@ 2026-10-02 8:57 ` Maurizio Casciano via B4 Relay
2026-10-02 8:57 ` [PATCH v10 11/15] media: ov2740: release group hold after gain write errors Maurizio Casciano via B4 Relay
` (4 subsequent siblings)
14 siblings, 0 replies; 18+ messages in thread
From: Maurizio Casciano via B4 Relay @ 2026-10-02 8:57 UTC (permalink / raw)
To: Sakari Ailus, Jacopo Mondi, Nicholas Roth, Mauro Carvalho Chehab,
Bingbu Cao, Dan Scally, Hans de Goede, Andy Shevchenko,
Greg Kroah-Hartman
Cc: Andy Shevchenko, linux-media, linux-kernel, linux-staging
From: Maurizio Casciano <mauriziocasciano7@gmail.com>
The ISP2401 CSI-2 receiver timing depends on the sensor link frequency.
Query it through v4l2_get_link_freq() instead of reading a 32-bit
control value directly.
Keep the frequency as s64 throughout the calculation so valid link
frequencies do not require an arbitrary S32_MAX limit. Fall back to the
existing default timings when the frequency query fails.
Signed-off-by: Maurizio Casciano <mauriziocasciano7@gmail.com>
Assisted-by: LLM sparse
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
---
drivers/staging/media/atomisp/pci/atomisp_csi2.c | 20 +++++++++++++-------
1 file changed, 13 insertions(+), 7 deletions(-)
diff --git a/drivers/staging/media/atomisp/pci/atomisp_csi2.c b/drivers/staging/media/atomisp/pci/atomisp_csi2.c
index 71df4ef629c2..cbdeac32f6f3 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_csi2.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_csi2.c
@@ -5,6 +5,7 @@
* Copyright (c) 2010 Intel Corporation. All Rights Reserved.
*/
+#include <media/v4l2-common.h>
#include <media/v4l2-event.h>
#include <media/v4l2-mediabus.h>
#include "atomisp_cmd.h"
@@ -210,7 +211,7 @@ int atomisp_mipi_csi2_register_entities(struct atomisp_mipi_csi2_device *csi2,
static const int LIMIT_SHIFT = 6; /* Limit numeric range into 31 bits */
static int
-atomisp_csi2_configure_calc(const short int coeffs[2], int mipi_freq, int def)
+atomisp_csi2_configure_calc(const short int coeffs[2], s64 mipi_freq, int def)
{
/* Delay counter accuracy, 1/0.0625 for ANN/CHT, 1/0.125 for BXT */
static const int accinv = 16; /* 1 / COUNT_ACC */
@@ -289,18 +290,18 @@ static void atomisp_csi2_configure_isp2401(struct atomisp_sub_device *asd)
int dat_termen;
int dat_settle;
- struct v4l2_control ctrl;
struct atomisp_device *isp = asd->isp;
- int mipi_freq = 0;
enum atomisp_camera_port port;
+ struct v4l2_subdev *sensor;
+ s64 mipi_freq;
int n;
port = isp->inputs[asd->input_curr].port;
- ctrl.id = V4L2_CID_LINK_FREQ;
- if (v4l2_g_ctrl
- (isp->inputs[asd->input_curr].sensor->ctrl_handler, &ctrl) == 0)
- mipi_freq = ctrl.value;
+ sensor = isp->inputs[asd->input_curr].sensor;
+ mipi_freq = v4l2_get_link_freq(&sensor->entity.pads[0], 0, 0);
+ if (mipi_freq < 0)
+ mipi_freq = 0;
clk_termen = atomisp_csi2_configure_calc(coeff_clk_termen, mipi_freq,
TERMEN_DEFAULT);
@@ -311,6 +312,11 @@ static void atomisp_csi2_configure_isp2401(struct atomisp_sub_device *asd)
dat_settle = atomisp_csi2_configure_calc(coeff_dat_settle, mipi_freq,
SETTLE_DEFAULT);
+ dev_dbg(isp->dev,
+ "CSI port %u link frequency %lld Hz, clk timing %d/%d, data timing %d/%d\n",
+ port, mipi_freq, clk_termen, clk_settle,
+ dat_termen, dat_settle);
+
for (n = 0; n < csi2_port_lanes[port] + 1; n++) {
hrt_address base = csi2_port_base[port] + csi2_lane_base[n];
--
2.53.0
^ permalink raw reply [flat|nested] 18+ messages in thread* [PATCH v10 11/15] media: ov2740: release group hold after gain write errors
2026-10-02 8:57 [PATCH v10 00/15] media: Add Lenovo Yoga Book camera support Maurizio Casciano via B4 Relay
` (9 preceding siblings ...)
2026-10-02 8:57 ` [PATCH v10 10/15] media: atomisp: derive CSI-2 timing from sensor link frequency Maurizio Casciano via B4 Relay
@ 2026-10-02 8:57 ` Maurizio Casciano via B4 Relay
2026-10-02 8:57 ` [PATCH v10 12/15] media: ov2740: add manual white balance controls Maurizio Casciano via B4 Relay
` (3 subsequent siblings)
14 siblings, 0 replies; 18+ messages in thread
From: Maurizio Casciano via B4 Relay @ 2026-10-02 8:57 UTC (permalink / raw)
To: Sakari Ailus, Jacopo Mondi, Nicholas Roth, Mauro Carvalho Chehab,
Bingbu Cao, Dan Scally, Hans de Goede, Andy Shevchenko,
Greg Kroah-Hartman
Cc: Andy Shevchenko, linux-media, linux-kernel, linux-staging
From: Maurizio Casciano <mauriziocasciano7@gmail.com>
Digital-gain updates start a register group before writing the red, green
and blue gains. The current error paths return immediately when one of
those writes fails, leaving the group open and never issuing its end and
launch commands. Later control updates can then be accumulated in an
unfinished group instead of taking effect.
Once group hold has started, always attempt both commands needed to end
and launch the group. Preserve the first gain-write error; report an end
or launch error only when all gain writes succeeded.
Fixes: 84363509c725 ("media: ov2740: use group write for digital gain")
Cc: stable@vger.kernel.org
Signed-off-by: Maurizio Casciano <mauriziocasciano7@gmail.com>
Assisted-by: LLM sparse
---
drivers/media/i2c/ov2740.c | 21 +++++++++------------
1 file changed, 9 insertions(+), 12 deletions(-)
diff --git a/drivers/media/i2c/ov2740.c b/drivers/media/i2c/ov2740.c
index ca33ef30267d..4479666f17f7 100644
--- a/drivers/media/i2c/ov2740.c
+++ b/drivers/media/i2c/ov2740.c
@@ -696,7 +696,7 @@ static int ov2740_identify_module(struct ov2740 *ov2740)
static int ov2740_update_digital_gain(struct ov2740 *ov2740, u32 d_gain)
{
- int ret;
+ int end_ret, launch_ret, ret;
ret = ov2740_write_reg(ov2740, OV2740_REG_GROUP_ACCESS, 1,
OV2740_GROUP_HOLD_START);
@@ -705,24 +705,21 @@ static int ov2740_update_digital_gain(struct ov2740 *ov2740, u32 d_gain)
ret = ov2740_write_reg(ov2740, OV2740_REG_MWB_R_GAIN, 2, d_gain);
if (ret)
- return ret;
+ goto release_group;
ret = ov2740_write_reg(ov2740, OV2740_REG_MWB_G_GAIN, 2, d_gain);
if (ret)
- return ret;
+ goto release_group;
ret = ov2740_write_reg(ov2740, OV2740_REG_MWB_B_GAIN, 2, d_gain);
- if (ret)
- return ret;
- ret = ov2740_write_reg(ov2740, OV2740_REG_GROUP_ACCESS, 1,
- OV2740_GROUP_HOLD_END);
- if (ret)
- return ret;
+release_group:
+ end_ret = ov2740_write_reg(ov2740, OV2740_REG_GROUP_ACCESS, 1,
+ OV2740_GROUP_HOLD_END);
+ launch_ret = ov2740_write_reg(ov2740, OV2740_REG_GROUP_ACCESS, 1,
+ OV2740_GROUP_HOLD_LAUNCH);
- ret = ov2740_write_reg(ov2740, OV2740_REG_GROUP_ACCESS, 1,
- OV2740_GROUP_HOLD_LAUNCH);
- return ret;
+ return ret ?: end_ret ?: launch_ret;
}
static int ov2740_test_pattern(struct ov2740 *ov2740, u32 pattern)
--
2.53.0
^ permalink raw reply [flat|nested] 18+ messages in thread* [PATCH v10 12/15] media: ov2740: add manual white balance controls
2026-10-02 8:57 [PATCH v10 00/15] media: Add Lenovo Yoga Book camera support Maurizio Casciano via B4 Relay
` (10 preceding siblings ...)
2026-10-02 8:57 ` [PATCH v10 11/15] media: ov2740: release group hold after gain write errors Maurizio Casciano via B4 Relay
@ 2026-10-02 8:57 ` Maurizio Casciano via B4 Relay
2026-10-02 8:57 ` [PATCH v10 13/15] media: atomisp: Use struct v4l2_area for padding Maurizio Casciano via B4 Relay
` (2 subsequent siblings)
14 siblings, 0 replies; 18+ messages in thread
From: Maurizio Casciano via B4 Relay @ 2026-10-02 8:57 UTC (permalink / raw)
To: Sakari Ailus, Jacopo Mondi, Nicholas Roth, Mauro Carvalho Chehab,
Bingbu Cao, Dan Scally, Hans de Goede, Andy Shevchenko,
Greg Kroah-Hartman
Cc: Andy Shevchenko, linux-media, linux-kernel, linux-staging
From: Maurizio Casciano <mauriziocasciano7@gmail.com>
The sensor has separate red, green and blue manual white-balance gain
registers, but the driver currently writes the same digital-gain value
to all three channels. This prevents userspace from correcting the
strong color cast of raw Bayer capture.
Expose red- and blue-balance controls relative to the digital gain and
update all three channels under group hold.
Tested on the Yoga Book OV2740 with live gain changes and continuous raw
capture.
Signed-off-by: Maurizio Casciano <mauriziocasciano7@gmail.com>
Assisted-by: LLM sparse
---
drivers/media/i2c/ov2740.c | 44 ++++++++++++++++++++++++++++++++++++--------
1 file changed, 36 insertions(+), 8 deletions(-)
diff --git a/drivers/media/i2c/ov2740.c b/drivers/media/i2c/ov2740.c
index 4479666f17f7..42e4cd5d1341 100644
--- a/drivers/media/i2c/ov2740.c
+++ b/drivers/media/i2c/ov2740.c
@@ -565,6 +565,9 @@ struct ov2740 {
struct v4l2_ctrl *vblank;
struct v4l2_ctrl *hblank;
struct v4l2_ctrl *exposure;
+ struct v4l2_ctrl *digital_gain;
+ struct v4l2_ctrl *red_balance;
+ struct v4l2_ctrl *blue_balance;
/* GPIOs, clocks, regulators */
struct gpio_desc *reset_gpio;
@@ -694,8 +697,10 @@ static int ov2740_identify_module(struct ov2740 *ov2740)
return 0;
}
-static int ov2740_update_digital_gain(struct ov2740 *ov2740, u32 d_gain)
+static int ov2740_update_mwb_gains(struct ov2740 *ov2740)
{
+ u32 d_gain = ov2740->digital_gain->val;
+ u32 blue_gain, red_gain;
int end_ret, launch_ret, ret;
ret = ov2740_write_reg(ov2740, OV2740_REG_GROUP_ACCESS, 1,
@@ -703,7 +708,11 @@ static int ov2740_update_digital_gain(struct ov2740 *ov2740, u32 d_gain)
if (ret)
return ret;
- ret = ov2740_write_reg(ov2740, OV2740_REG_MWB_R_GAIN, 2, d_gain);
+ /* Balance controls use 1024 as unity relative to the digital gain. */
+ red_gain = DIV_ROUND_CLOSEST(d_gain * ov2740->red_balance->val,
+ OV2740_DGTL_GAIN_DEFAULT);
+ red_gain = min(red_gain, OV2740_DGTL_GAIN_MAX);
+ ret = ov2740_write_reg(ov2740, OV2740_REG_MWB_R_GAIN, 2, red_gain);
if (ret)
goto release_group;
@@ -711,7 +720,10 @@ static int ov2740_update_digital_gain(struct ov2740 *ov2740, u32 d_gain)
if (ret)
goto release_group;
- ret = ov2740_write_reg(ov2740, OV2740_REG_MWB_B_GAIN, 2, d_gain);
+ blue_gain = DIV_ROUND_CLOSEST(d_gain * ov2740->blue_balance->val,
+ OV2740_DGTL_GAIN_DEFAULT);
+ blue_gain = min(blue_gain, OV2740_DGTL_GAIN_MAX);
+ ret = ov2740_write_reg(ov2740, OV2740_REG_MWB_B_GAIN, 2, blue_gain);
release_group:
end_ret = ov2740_write_reg(ov2740, OV2740_REG_GROUP_ACCESS, 1,
@@ -760,7 +772,9 @@ static int ov2740_set_ctrl(struct v4l2_ctrl *ctrl)
break;
case V4L2_CID_DIGITAL_GAIN:
- ret = ov2740_update_digital_gain(ov2740, ctrl->val);
+ case V4L2_CID_RED_BALANCE:
+ case V4L2_CID_BLUE_BALANCE:
+ ret = ov2740_update_mwb_gains(ov2740);
break;
case V4L2_CID_EXPOSURE:
@@ -801,7 +815,7 @@ static int ov2740_init_controls(struct ov2740 *ov2740)
int ret;
ctrl_hdlr = &ov2740->ctrl_handler;
- ret = v4l2_ctrl_handler_init(ctrl_hdlr, 10);
+ ret = v4l2_ctrl_handler_init(ctrl_hdlr, 12);
if (ret)
return ret;
@@ -836,9 +850,23 @@ static int ov2740_init_controls(struct ov2740 *ov2740)
v4l2_ctrl_new_std(ctrl_hdlr, &ov2740_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
OV2740_ANAL_GAIN_MIN, OV2740_ANAL_GAIN_MAX,
OV2740_ANAL_GAIN_STEP, OV2740_ANAL_GAIN_MIN);
- v4l2_ctrl_new_std(ctrl_hdlr, &ov2740_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
- OV2740_DGTL_GAIN_MIN, OV2740_DGTL_GAIN_MAX,
- OV2740_DGTL_GAIN_STEP, OV2740_DGTL_GAIN_DEFAULT);
+ ov2740->digital_gain =
+ v4l2_ctrl_new_std(ctrl_hdlr, &ov2740_ctrl_ops,
+ V4L2_CID_DIGITAL_GAIN,
+ OV2740_DGTL_GAIN_MIN, OV2740_DGTL_GAIN_MAX,
+ OV2740_DGTL_GAIN_STEP,
+ OV2740_DGTL_GAIN_DEFAULT);
+ ov2740->red_balance =
+ v4l2_ctrl_new_std(ctrl_hdlr, &ov2740_ctrl_ops,
+ V4L2_CID_RED_BALANCE,
+ 1, OV2740_DGTL_GAIN_MAX, 1,
+ OV2740_DGTL_GAIN_DEFAULT);
+ ov2740->blue_balance =
+ v4l2_ctrl_new_std(ctrl_hdlr, &ov2740_ctrl_ops,
+ V4L2_CID_BLUE_BALANCE,
+ 1, OV2740_DGTL_GAIN_MAX, 1,
+ OV2740_DGTL_GAIN_DEFAULT);
+ v4l2_ctrl_cluster(3, &ov2740->digital_gain);
exposure_max = ov2740->cur_mode->vts_def - OV2740_EXPOSURE_MAX_MARGIN;
ov2740->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &ov2740_ctrl_ops,
V4L2_CID_EXPOSURE,
--
2.53.0
^ permalink raw reply [flat|nested] 18+ messages in thread* [PATCH v10 13/15] media: atomisp: Use struct v4l2_area for padding
2026-10-02 8:57 [PATCH v10 00/15] media: Add Lenovo Yoga Book camera support Maurizio Casciano via B4 Relay
` (11 preceding siblings ...)
2026-10-02 8:57 ` [PATCH v10 12/15] media: ov2740: add manual white balance controls Maurizio Casciano via B4 Relay
@ 2026-10-02 8:57 ` Maurizio Casciano via B4 Relay
2026-10-02 8:57 ` [PATCH v10 14/15] media: atomisp: allow raw Bayer capture Maurizio Casciano via B4 Relay
2026-10-02 8:57 ` [PATCH v10 15/15] media: i2c: Add WV517S lens actuator driver Maurizio Casciano via B4 Relay
14 siblings, 0 replies; 18+ messages in thread
From: Maurizio Casciano via B4 Relay @ 2026-10-02 8:57 UTC (permalink / raw)
To: Sakari Ailus, Jacopo Mondi, Nicholas Roth, Mauro Carvalho Chehab,
Bingbu Cao, Dan Scally, Hans de Goede, Andy Shevchenko,
Greg Kroah-Hartman
Cc: Andy Shevchenko, linux-media, linux-kernel, linux-staging
From: Maurizio Casciano <mauriziocasciano7@gmail.com>
The padding helper passes width and height as four separate scalar
arguments even though they form two logical dimensions.
Pass the requested size and returned padding as struct v4l2_area values.
This makes the dimensions explicit and simplifies all three callers.
Suggested-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Maurizio Casciano <mauriziocasciano7@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
---
drivers/staging/media/atomisp/pci/atomisp_cmd.c | 69 +++++++++++++---------
drivers/staging/media/atomisp/pci/atomisp_cmd.h | 6 +-
drivers/staging/media/atomisp/pci/atomisp_ioctl.c | 15 ++---
drivers/staging/media/atomisp/pci/atomisp_subdev.c | 4 +-
drivers/staging/media/atomisp/pci/atomisp_subdev.h | 3 +-
5 files changed, 54 insertions(+), 43 deletions(-)
diff --git a/drivers/staging/media/atomisp/pci/atomisp_cmd.c b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
index 52c71cd86dec..4d4c0726d9de 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_cmd.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
@@ -3562,9 +3562,9 @@ static void atomisp_fill_pix_format(struct v4l2_pix_format *f,
f->xfer_func = V4L2_XFER_FUNC_709;
}
-/* Get sensor padding values for the non padded width x height resolution */
-void atomisp_get_padding(struct atomisp_device *isp, u32 width, u32 height,
- u32 *padding_w, u32 *padding_h)
+/* Get sensor padding values for the non-padded size */
+void atomisp_get_padding(struct atomisp_device *isp, struct v4l2_area size,
+ struct v4l2_area *pad)
{
struct atomisp_input_subdev *input = &isp->inputs[isp->asd.input_curr];
struct v4l2_rect native_rect = input->native_rect;
@@ -3574,22 +3574,24 @@ void atomisp_get_padding(struct atomisp_device *isp, u32 width, u32 height,
struct v4l2_mbus_framefmt *sink;
if (!input->crop_support) {
- *padding_w = pad_w;
- *padding_h = pad_h;
+ pad->width = pad_w;
+ pad->height = pad_h;
return;
}
- width = min(width, input->active_rect.width);
- height = min(height, input->active_rect.height);
+ size.width = min(size.width, input->active_rect.width);
+ size.height = min(size.height, input->active_rect.height);
- if (input->binning_support && width <= (input->active_rect.width / 2) &&
- height <= (input->active_rect.height / 2)) {
+ if (input->binning_support &&
+ size.width <= (input->active_rect.width / 2) &&
+ size.height <= (input->active_rect.height / 2)) {
native_rect.width /= 2;
native_rect.height /= 2;
}
- *padding_w = min_t(u32, (native_rect.width - width) & ~1, pad_w);
- *padding_h = min_t(u32, (native_rect.height - height) & ~1, pad_h);
+ pad->width = min_t(u32, (native_rect.width - size.width) & ~1, pad_w);
+ pad->height = min_t(u32, (native_rect.height - size.height) & ~1,
+ pad_h);
/* The below minimum padding requirements are for BYT / ISP2400 only */
if (IS_ISP2401)
@@ -3617,8 +3619,18 @@ void atomisp_get_padding(struct atomisp_device *isp, u32 width, u32 height,
min_pad_h += 2;
apply_min_padding:
- *padding_w = max_t(u32, *padding_w, min_pad_w);
- *padding_h = max_t(u32, *padding_h, min_pad_h);
+ pad->width = max_t(u32, pad->width, min_pad_w);
+ pad->height = max_t(u32, pad->height, min_pad_h);
+}
+
+static void
+atomisp_get_pix_padding(struct atomisp_device *isp,
+ struct v4l2_pix_format *f,
+ struct v4l2_area *pad)
+{
+ struct v4l2_area size = { .width = f->width, .height = f->height };
+
+ atomisp_get_padding(isp, size, pad);
}
int atomisp_s_sensor_power(struct atomisp_device *isp, unsigned int input, bool on)
@@ -3806,7 +3818,7 @@ int atomisp_try_fmt(struct atomisp_device *isp, struct v4l2_pix_format *f,
const struct atomisp_format_bridge *fmt, *snr_fmt;
struct atomisp_sub_device *asd = &isp->asd;
struct v4l2_mbus_framefmt ffmt = { };
- u32 padding_w, padding_h;
+ struct v4l2_area padding;
int ret;
fmt = atomisp_get_format_bridge(f->pixelformat);
@@ -3833,10 +3845,10 @@ int atomisp_try_fmt(struct atomisp_device *isp, struct v4l2_pix_format *f,
* resolution + padding. Add padding here and remove it again after
* the set_fmt call, like atomisp_set_fmt_to_snr() does.
*/
- atomisp_get_padding(isp, f->width, f->height, &padding_w, &padding_h);
+ atomisp_get_pix_padding(isp, f, &padding);
v4l2_fill_mbus_format(&ffmt, f, fmt->mbus_code);
- ffmt.width += padding_w;
- ffmt.height += padding_h;
+ ffmt.width += padding.width;
+ ffmt.height += padding.height;
dev_dbg(isp->dev, "try_mbus_fmt: try %ux%u\n", ffmt.width, ffmt.height);
@@ -3853,8 +3865,8 @@ int atomisp_try_fmt(struct atomisp_device *isp, struct v4l2_pix_format *f,
return -EINVAL;
}
- f->width = ffmt.width - padding_w;
- f->height = ffmt.height - padding_h;
+ f->width = ffmt.width - padding.width;
+ f->height = ffmt.height - padding.height;
/*
* If the format is jpeg or custom RAW, then the width and height will
@@ -4274,11 +4286,12 @@ static int atomisp_set_fmt_to_snr(struct video_device *vdev, const struct v4l2_p
return -EINVAL;
v4l2_fill_mbus_format(&ffmt, f, format->mbus_code);
- ffmt.height += asd->sink_pad_padding_h + dvs_env_h;
- ffmt.width += asd->sink_pad_padding_w + dvs_env_w;
+ ffmt.height += asd->sink_pad_padding.height + dvs_env_h;
+ ffmt.width += asd->sink_pad_padding.width + dvs_env_w;
dev_dbg(isp->dev, "s_mbus_fmt: ask %ux%u (padding %ux%u, dvs %ux%u)\n",
- ffmt.width, ffmt.height, asd->sink_pad_padding_w, asd->sink_pad_padding_h,
+ ffmt.width, ffmt.height, asd->sink_pad_padding.width,
+ asd->sink_pad_padding.height,
dvs_env_w, dvs_env_h);
__atomisp_init_stream_info(ATOMISP_INPUT_STREAM_GENERAL, stream_info);
@@ -4371,13 +4384,11 @@ int atomisp_set_fmt(struct video_device *vdev, struct v4l2_format *f)
V4L2_SUBDEV_FORMAT_ACTIVE,
ATOMISP_SUBDEV_PAD_SOURCE, &isp_source_fmt);
- if (atomisp_subdev_format_conversion(asd)) {
- atomisp_get_padding(isp, f->fmt.pix.width, f->fmt.pix.height,
- &asd->sink_pad_padding_w, &asd->sink_pad_padding_h);
- } else {
- asd->sink_pad_padding_w = 0;
- asd->sink_pad_padding_h = 0;
- }
+ if (atomisp_subdev_format_conversion(asd))
+ atomisp_get_pix_padding(isp, &f->fmt.pix,
+ &asd->sink_pad_padding);
+ else
+ asd->sink_pad_padding = (struct v4l2_area) { };
atomisp_get_dis_envelop(asd, f->fmt.pix.width, f->fmt.pix.height,
&dvs_env_w, &dvs_env_h);
diff --git a/drivers/staging/media/atomisp/pci/atomisp_cmd.h b/drivers/staging/media/atomisp/pci/atomisp_cmd.h
index d3d1f2574e77..8a84e774f4d5 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_cmd.h
+++ b/drivers/staging/media/atomisp/pci/atomisp_cmd.h
@@ -225,9 +225,9 @@ int atomisp_makeup_css_parameters(struct atomisp_sub_device *asd,
int atomisp_compare_grid(struct atomisp_sub_device *asd,
struct atomisp_grid_info *atomgrid);
-/* Get sensor padding values for the non padded width x height resolution */
-void atomisp_get_padding(struct atomisp_device *isp, u32 width, u32 height,
- u32 *padding_w, u32 *padding_h);
+/* Get sensor padding values for the non-padded size */
+void atomisp_get_padding(struct atomisp_device *isp, struct v4l2_area size,
+ struct v4l2_area *pad);
/* Set sensor power (no-op if already on/off) */
int atomisp_s_sensor_power(struct atomisp_device *isp, unsigned int input, bool on);
diff --git a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
index 50366bf10f32..87c29a940f9b 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
@@ -457,7 +457,7 @@ static int atomisp_enum_framesizes_crop_inner(struct atomisp_device *isp,
const struct v4l2_rect *native,
int *valid_sizes)
{
- static const struct v4l2_frmsize_discrete frame_sizes[] = {
+ static const struct v4l2_area frame_sizes[] = {
{ 1920, 1440 },
{ 1920, 1200 },
{ 1920, 1080 },
@@ -470,15 +470,15 @@ static int atomisp_enum_framesizes_crop_inner(struct atomisp_device *isp,
{ 800, 600 },
{ 640, 480 },
};
- u32 padding_w, padding_h;
int i;
for (i = 0; i < ARRAY_SIZE(frame_sizes); i++) {
- atomisp_get_padding(isp, frame_sizes[i].width, frame_sizes[i].height,
- &padding_w, &padding_h);
+ struct v4l2_area padding;
- if ((frame_sizes[i].width + padding_w) > native->width ||
- (frame_sizes[i].height + padding_h) > native->height)
+ atomisp_get_padding(isp, frame_sizes[i], &padding);
+
+ if ((frame_sizes[i].width + padding.width) > native->width ||
+ (frame_sizes[i].height + padding.height) > native->height)
continue;
/*
@@ -491,7 +491,8 @@ static int atomisp_enum_framesizes_crop_inner(struct atomisp_device *isp,
if (*valid_sizes == fsize->index) {
fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
- fsize->discrete = frame_sizes[i];
+ fsize->discrete.width = frame_sizes[i].width;
+ fsize->discrete.height = frame_sizes[i].height;
return 0;
}
diff --git a/drivers/staging/media/atomisp/pci/atomisp_subdev.c b/drivers/staging/media/atomisp/pci/atomisp_subdev.c
index bdd2d9b18da2..495032966b00 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_subdev.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_subdev.c
@@ -327,8 +327,8 @@ int atomisp_subdev_set_selection(struct v4l2_subdev *sd,
if (atomisp_subdev_format_conversion(isp_sd)
&& crop[pad]->width && crop[pad]->height) {
- crop[pad]->width -= isp_sd->sink_pad_padding_w;
- crop[pad]->height -= isp_sd->sink_pad_padding_h;
+ crop[pad]->width -= isp_sd->sink_pad_padding.width;
+ crop[pad]->height -= isp_sd->sink_pad_padding.height;
}
if (isp_sd->params.video_dis_en &&
diff --git a/drivers/staging/media/atomisp/pci/atomisp_subdev.h b/drivers/staging/media/atomisp/pci/atomisp_subdev.h
index b12bb65be3f2..0045f380de74 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_subdev.h
+++ b/drivers/staging/media/atomisp/pci/atomisp_subdev.h
@@ -214,8 +214,7 @@ struct atomisp_sub_device {
struct media_pad pads[ATOMISP_SUBDEV_PADS_NUM];
struct atomisp_pad_format fmt[ATOMISP_SUBDEV_PADS_NUM];
/* Padding for currently set sink-pad fmt */
- u32 sink_pad_padding_w;
- u32 sink_pad_padding_h;
+ struct v4l2_area sink_pad_padding;
unsigned int output;
struct atomisp_video_pipe video_out;
--
2.53.0
^ permalink raw reply [flat|nested] 18+ messages in thread* [PATCH v10 14/15] media: atomisp: allow raw Bayer capture
2026-10-02 8:57 [PATCH v10 00/15] media: Add Lenovo Yoga Book camera support Maurizio Casciano via B4 Relay
` (12 preceding siblings ...)
2026-10-02 8:57 ` [PATCH v10 13/15] media: atomisp: Use struct v4l2_area for padding Maurizio Casciano via B4 Relay
@ 2026-10-02 8:57 ` Maurizio Casciano via B4 Relay
2026-10-02 8:57 ` [PATCH v10 15/15] media: i2c: Add WV517S lens actuator driver Maurizio Casciano via B4 Relay
14 siblings, 0 replies; 18+ messages in thread
From: Maurizio Casciano via B4 Relay @ 2026-10-02 8:57 UTC (permalink / raw)
To: Sakari Ailus, Jacopo Mondi, Nicholas Roth, Mauro Carvalho Chehab,
Bingbu Cao, Dan Scally, Hans de Goede, Andy Shevchenko,
Greg Kroah-Hartman
Cc: Andy Shevchenko, linux-media, linux-kernel, linux-staging
From: Maurizio Casciano <mauriziocasciano7@gmail.com>
AtomISP currently rejects all raw formats and silently substitutes
YUV420. This prevents userspace camera processing stacks from obtaining
unprocessed sensor frames.
Enumerate only the raw format matching the sensor media-bus code and
reconcile raw requests with the code selected by the sensor. Userspace
opts in by selecting that raw V4L2 pixel format with VIDIOC_S_FMT.
Raw formats expose the full sensor transport frame so ISP2401 can use
its copy pipeline. Processed formats retain the existing global padding
behavior; selecting a smaller receiver crop remains a userspace pipeline
decision.
Signed-off-by: Maurizio Casciano <mauriziocasciano7@gmail.com>
Assisted-by: LLM sparse
---
drivers/staging/media/atomisp/pci/atomisp_cmd.c | 14 +++++++++++---
drivers/staging/media/atomisp/pci/atomisp_ioctl.c | 17 ++++++++++++++---
2 files changed, 25 insertions(+), 6 deletions(-)
diff --git a/drivers/staging/media/atomisp/pci/atomisp_cmd.c b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
index 4d4c0726d9de..e7b817fd779a 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_cmd.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
@@ -3822,8 +3822,7 @@ int atomisp_try_fmt(struct atomisp_device *isp, struct v4l2_pix_format *f,
int ret;
fmt = atomisp_get_format_bridge(f->pixelformat);
- /* Currently, raw formats are broken!!! */
- if (!fmt || fmt->sh_fmt == IA_CSS_FRAME_FORMAT_RAW) {
+ if (!fmt) {
f->pixelformat = V4L2_PIX_FMT_YUV420;
fmt = atomisp_get_format_bridge(f->pixelformat);
@@ -3845,7 +3844,10 @@ int atomisp_try_fmt(struct atomisp_device *isp, struct v4l2_pix_format *f,
* resolution + padding. Add padding here and remove it again after
* the set_fmt call, like atomisp_set_fmt_to_snr() does.
*/
- atomisp_get_pix_padding(isp, f, &padding);
+ if (fmt->sh_fmt == IA_CSS_FRAME_FORMAT_RAW)
+ padding = (struct v4l2_area) { };
+ else
+ atomisp_get_pix_padding(isp, f, &padding);
v4l2_fill_mbus_format(&ffmt, f, fmt->mbus_code);
ffmt.width += padding.width;
ffmt.height += padding.height;
@@ -3865,6 +3867,12 @@ int atomisp_try_fmt(struct atomisp_device *isp, struct v4l2_pix_format *f,
return -EINVAL;
}
+ if (fmt->sh_fmt == IA_CSS_FRAME_FORMAT_RAW &&
+ fmt->mbus_code != snr_fmt->mbus_code) {
+ fmt = snr_fmt;
+ f->pixelformat = fmt->pixelformat;
+ }
+
f->width = ffmt.width - padding.width;
f->height = ffmt.height - padding.height;
diff --git a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
index 87c29a940f9b..9ce529b0c7b3 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
@@ -537,12 +537,17 @@ static int atomisp_enum_framesizes(struct file *file, void *priv,
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
.code = input->code,
};
+ const struct atomisp_format_bridge *format;
struct v4l2_subdev_state *act_sd_state;
int ret;
if (!input->sensor)
return -EINVAL;
+ format = atomisp_get_format_bridge(fsize->pixel_format);
+ if (!format)
+ return -EINVAL;
+
if (input->crop_support)
return atomisp_enum_framesizes_crop(isp, fsize);
@@ -555,8 +560,13 @@ static int atomisp_enum_framesizes(struct file *file, void *priv,
return ret;
fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
- fsize->discrete.width = fse.max_width - pad_w;
- fsize->discrete.height = fse.max_height - pad_h;
+ if (format->sh_fmt == IA_CSS_FRAME_FORMAT_RAW) {
+ fsize->discrete.width = fse.max_width;
+ fsize->discrete.height = fse.max_height;
+ } else {
+ fsize->discrete.width = fse.max_width - pad_w;
+ fsize->discrete.height = fse.max_height - pad_h;
+ }
return 0;
}
@@ -630,7 +640,8 @@ static int atomisp_enum_fmt_cap(struct file *file, void *fh,
*
* FIXME: fix the pipeline to allow sensor format too.
*/
- if (format->sh_fmt == IA_CSS_FRAME_FORMAT_RAW)
+ if (format->sh_fmt == IA_CSS_FRAME_FORMAT_RAW &&
+ format->mbus_code != code.code)
continue;
/* Found a match. Now let's pick f->index'th one. */
--
2.53.0
^ permalink raw reply [flat|nested] 18+ messages in thread* [PATCH v10 15/15] media: i2c: Add WV517S lens actuator driver
2026-10-02 8:57 [PATCH v10 00/15] media: Add Lenovo Yoga Book camera support Maurizio Casciano via B4 Relay
` (13 preceding siblings ...)
2026-10-02 8:57 ` [PATCH v10 14/15] media: atomisp: allow raw Bayer capture Maurizio Casciano via B4 Relay
@ 2026-10-02 8:57 ` Maurizio Casciano via B4 Relay
14 siblings, 0 replies; 18+ messages in thread
From: Maurizio Casciano via B4 Relay @ 2026-10-02 8:57 UTC (permalink / raw)
To: Sakari Ailus, Jacopo Mondi, Nicholas Roth, Mauro Carvalho Chehab,
Bingbu Cao, Dan Scally, Hans de Goede, Andy Shevchenko,
Greg Kroah-Hartman
Cc: Andy Shevchenko, linux-media, linux-kernel, linux-staging
From: Maurizio Casciano <mauriziocasciano7@gmail.com>
The Lenovo Yoga Book YB1-X91 rear camera contains a WV517S voice-coil
actuator. Add a V4L2 lens subdevice exposing the standard 10-bit
FOCUS_ABSOLUTE control and the device ringing-control mode.
Use regmap for register access and tie control updates to runtime PM so
the IPU bridge sensor link keeps shared power resources active. Propagate
PM acquisition failures and restore the drive mode and controls after
resume.
The register addresses and drive-mode value are derived from Intel's
GPL-2.0 WV517 driver. Retain the Intel copyright notice and document the
2026 copyright for this V4L2/regmap implementation.
Link: https://github.com/jekhor/yogabook-linux-android-kernel/blob/574bae692716f1b14093497bfab8a007fe8e460b/drivers/external_drivers/camera/drivers/media/i2c/wv517.c
Assisted-by: LLM sparse
Signed-off-by: Maurizio Casciano <mauriziocasciano7@gmail.com>
---
MAINTAINERS | 1 +
drivers/media/i2c/Kconfig | 11 +++
drivers/media/i2c/Makefile | 1 +
drivers/media/i2c/wv517s.c | 208 +++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 221 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 6bdc32e7c8bf..9b0a6ef0bec8 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -28656,6 +28656,7 @@ S: Maintained
F: drivers/media/i2c/ak*
F: drivers/media/i2c/dw*
F: drivers/media/i2c/lm*
+F: drivers/media/i2c/wv517s.c
V4L2 CAMERA SENSOR DRIVERS
M: Sakari Ailus <sakari.ailus@linux.intel.com>
diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
index b9961f77f0c4..9ccfa4b881f0 100644
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -991,6 +991,17 @@ config VIDEO_DW9807_VCM
capability. This is designed for linear control of
voice coil motors, controlled via I2C serial interface.
+config VIDEO_WV517S
+ tristate "WV517S lens voice coil support"
+ select REGMAP_I2C
+ help
+ This is a driver for the WV517S camera lens voice coil. The driver
+ supports 10-bit focus control and exposes the actuator through the
+ standard V4L2 lens sub-device interface.
+
+ To compile this driver as a module, choose M here: the module will be
+ called wv517s.
+
endif
menu "Flash devices"
diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
index 351c41ef25f8..6c3b4f06b819 100644
--- a/drivers/media/i2c/Makefile
+++ b/drivers/media/i2c/Makefile
@@ -178,4 +178,5 @@ obj-$(CONFIG_VIDEO_VP27SMPX) += vp27smpx.o
obj-$(CONFIG_VIDEO_VPX3220) += vpx3220.o
obj-$(CONFIG_VIDEO_WM8739) += wm8739.o
obj-$(CONFIG_VIDEO_WM8775) += wm8775.o
+obj-$(CONFIG_VIDEO_WV517S) += wv517s.o
obj-$(CONFIG_VIDEO_INTEL_CVS) += cvs/
diff --git a/drivers/media/i2c/wv517s.c b/drivers/media/i2c/wv517s.c
new file mode 100644
index 000000000000..e252a423289d
--- /dev/null
+++ b/drivers/media/i2c/wv517s.c
@@ -0,0 +1,208 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+/*
+ * WV517S voice-coil motor driver
+ *
+ * Copyright (c) 2014 Intel Corporation.
+ * Copyright (C) 2026 Maurizio Casciano <mauriziocasciano7@gmail.com>
+ */
+
+#include <linux/container_of.h>
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/types.h>
+
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+
+#define WV517S_MAX_FOCUS_POSITION 1023
+#define WV517S_DEFAULT_FOCUS_POSITION 300
+
+#define WV517S_REG_FOCUS 0x41
+#define WV517S_REG_DRIVE_MODE 0x43
+#define WV517S_DRIVE_MODE_12_6_MS 0x0211
+
+struct wv517s_device {
+ struct v4l2_ctrl_handler ctrl_handler;
+ struct v4l2_subdev sd;
+ struct regmap *regmap;
+ bool resuming;
+};
+
+static inline struct wv517s_device *to_wv517s(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct wv517s_device, sd);
+}
+
+static const struct regmap_config wv517s_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 16,
+ .max_register = WV517S_REG_DRIVE_MODE,
+ .val_format_endian = REGMAP_ENDIAN_BIG,
+};
+
+static int wv517s_set_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct wv517s_device *wv517s =
+ container_of(ctrl->handler, struct wv517s_device, ctrl_handler);
+ struct device *dev = wv517s->sd.dev;
+ int pm_ret;
+ int ret;
+
+ if (ctrl->id != V4L2_CID_FOCUS_ABSOLUTE)
+ return -EINVAL;
+
+ /*
+ * Runtime resume restores controls while the PM state is RPM_RESUMING.
+ */
+ pm_ret = pm_runtime_get_if_active(dev);
+ if (!pm_ret && !wv517s->resuming)
+ return 0;
+ if (pm_ret < 0)
+ return pm_ret;
+
+ ret = regmap_write(wv517s->regmap, WV517S_REG_FOCUS, ctrl->val);
+
+ if (pm_ret > 0)
+ pm_runtime_put(dev);
+
+ return ret;
+}
+
+static const struct v4l2_ctrl_ops wv517s_ctrl_ops = {
+ .s_ctrl = wv517s_set_ctrl,
+};
+
+static int wv517s_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+{
+ return pm_runtime_resume_and_get(sd->dev);
+}
+
+static int wv517s_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+{
+ pm_runtime_put(sd->dev);
+
+ return 0;
+}
+
+static const struct v4l2_subdev_internal_ops wv517s_internal_ops = {
+ .open = wv517s_open,
+ .close = wv517s_close,
+};
+
+static const struct v4l2_subdev_ops wv517s_subdev_ops = { };
+
+static int wv517s_resume(struct device *dev)
+{
+ struct v4l2_subdev *sd = dev_get_drvdata(dev);
+ struct wv517s_device *wv517s = to_wv517s(sd);
+ int ret;
+
+ /* Restore the vendor-recommended 12.6 ms ringing-control mode. */
+ ret = regmap_write(wv517s->regmap, WV517S_REG_DRIVE_MODE,
+ WV517S_DRIVE_MODE_12_6_MS);
+ if (ret)
+ return ret;
+
+ wv517s->resuming = true;
+ ret = v4l2_ctrl_handler_setup(&wv517s->ctrl_handler);
+ wv517s->resuming = false;
+
+ return ret;
+}
+
+static DEFINE_RUNTIME_DEV_PM_OPS(wv517s_pm_ops, NULL, wv517s_resume, NULL);
+
+static int wv517s_probe(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct wv517s_device *wv517s;
+ int ret;
+
+ wv517s = devm_kzalloc(dev, sizeof(*wv517s), GFP_KERNEL);
+ if (!wv517s)
+ return -ENOMEM;
+
+ wv517s->regmap = devm_regmap_init_i2c(client, &wv517s_regmap_config);
+ if (IS_ERR(wv517s->regmap))
+ return dev_err_probe(dev, PTR_ERR(wv517s->regmap),
+ "failed to initialize regmap\n");
+
+ v4l2_i2c_subdev_init(&wv517s->sd, client, &wv517s_subdev_ops);
+ wv517s->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+ wv517s->sd.internal_ops = &wv517s_internal_ops;
+ wv517s->sd.entity.function = MEDIA_ENT_F_LENS;
+
+ v4l2_ctrl_handler_init(&wv517s->ctrl_handler, 1);
+ v4l2_ctrl_new_std(&wv517s->ctrl_handler, &wv517s_ctrl_ops,
+ V4L2_CID_FOCUS_ABSOLUTE, 0,
+ WV517S_MAX_FOCUS_POSITION, 1,
+ WV517S_DEFAULT_FOCUS_POSITION);
+ if (wv517s->ctrl_handler.error) {
+ ret = wv517s->ctrl_handler.error;
+ goto err_free_ctrl_handler;
+ }
+ wv517s->sd.ctrl_handler = &wv517s->ctrl_handler;
+
+ ret = media_entity_pads_init(&wv517s->sd.entity, 0, NULL);
+ if (ret)
+ goto err_free_ctrl_handler;
+
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+
+ ret = wv517s_resume(dev);
+ if (ret)
+ goto err_disable_pm;
+
+ ret = v4l2_async_register_subdev(&wv517s->sd);
+ if (ret)
+ goto err_disable_pm;
+
+ pm_runtime_idle(dev);
+
+ return 0;
+
+err_disable_pm:
+ pm_runtime_disable(dev);
+ media_entity_cleanup(&wv517s->sd.entity);
+err_free_ctrl_handler:
+ v4l2_ctrl_handler_free(&wv517s->ctrl_handler);
+
+ return ret;
+}
+
+static void wv517s_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct wv517s_device *wv517s = to_wv517s(sd);
+
+ v4l2_async_unregister_subdev(sd);
+ pm_runtime_disable(&client->dev);
+ v4l2_ctrl_handler_free(&wv517s->ctrl_handler);
+ media_entity_cleanup(&sd->entity);
+}
+
+static const struct i2c_device_id wv517s_id_table[] = {
+ { .name = "wv517s" },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, wv517s_id_table);
+
+static struct i2c_driver wv517s_i2c_driver = {
+ .driver = {
+ .name = "wv517s",
+ .pm = pm_ptr(&wv517s_pm_ops),
+ },
+ .probe = wv517s_probe,
+ .remove = wv517s_remove,
+ .id_table = wv517s_id_table,
+};
+module_i2c_driver(wv517s_i2c_driver);
+
+MODULE_AUTHOR("Maurizio Casciano <mauriziocasciano7@gmail.com>");
+MODULE_DESCRIPTION("WV517S VCM driver");
+MODULE_LICENSE("GPL");
--
2.53.0
^ permalink raw reply [flat|nested] 18+ messages in thread