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path: root/drivers/media/i2c/ov2740.c
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Diffstat (limited to 'drivers/media/i2c/ov2740.c')
-rw-r--r--drivers/media/i2c/ov2740.c379
1 files changed, 336 insertions, 43 deletions
diff --git a/drivers/media/i2c/ov2740.c b/drivers/media/i2c/ov2740.c
index 6be22586c3..552935ccb4 100644
--- a/drivers/media/i2c/ov2740.c
+++ b/drivers/media/i2c/ov2740.c
@@ -3,7 +3,9 @@
#include <asm/unaligned.h>
#include <linux/acpi.h>
+#include <linux/clk.h>
#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
@@ -14,6 +16,7 @@
#include <media/v4l2-fwnode.h>
#define OV2740_LINK_FREQ_360MHZ 360000000ULL
+#define OV2740_LINK_FREQ_180MHZ 180000000ULL
#define OV2740_SCLK 72000000LL
#define OV2740_MCLK 19200000
#define OV2740_DATA_LANES 2
@@ -28,9 +31,6 @@
/* vertical-timings from sensor */
#define OV2740_REG_VTS 0x380e
-#define OV2740_VTS_DEF 0x088a
-#define OV2740_VTS_MIN 0x0460
-#define OV2740_VTS_MAX 0x7fff
/* horizontal-timings from sensor */
#define OV2740_REG_HTS 0x380c
@@ -84,6 +84,7 @@ struct nvm_data {
enum {
OV2740_LINK_FREQ_360MHZ_INDEX,
+ OV2740_LINK_FREQ_180MHZ_INDEX,
};
struct ov2740_reg {
@@ -116,6 +117,9 @@ struct ov2740_mode {
/* Min vertical timining size */
u32 vts_min;
+ /* Max vertical timining size */
+ u32 vts_max;
+
/* Link frequency needed for this resolution */
u32 link_freq_index;
@@ -124,7 +128,6 @@ struct ov2740_mode {
};
static const struct ov2740_reg mipi_data_rate_720mbps[] = {
- {0x0103, 0x01},
{0x0302, 0x4b},
{0x030d, 0x4b},
{0x030e, 0x02},
@@ -132,7 +135,17 @@ static const struct ov2740_reg mipi_data_rate_720mbps[] = {
{0x0312, 0x11},
};
-static const struct ov2740_reg mode_1932x1092_regs[] = {
+static const struct ov2740_reg mipi_data_rate_360mbps[] = {
+ {0x0302, 0x4b},
+ {0x0303, 0x01},
+ {0x030d, 0x4b},
+ {0x030e, 0x02},
+ {0x030a, 0x01},
+ {0x0312, 0x11},
+ {0x4837, 0x2c},
+};
+
+static const struct ov2740_reg mode_1932x1092_regs_360mhz[] = {
{0x3000, 0x00},
{0x3018, 0x32},
{0x3031, 0x0a},
@@ -285,6 +298,159 @@ static const struct ov2740_reg mode_1932x1092_regs[] = {
{0x3813, 0x01},
};
+static const struct ov2740_reg mode_1932x1092_regs_180mhz[] = {
+ {0x3000, 0x00},
+ {0x3018, 0x32}, /* 0x32 for 2 lanes, 0x12 for 1 lane */
+ {0x3031, 0x0a},
+ {0x3080, 0x08},
+ {0x3083, 0xB4},
+ {0x3103, 0x00},
+ {0x3104, 0x01},
+ {0x3106, 0x01},
+ {0x3500, 0x00},
+ {0x3501, 0x44},
+ {0x3502, 0x40},
+ {0x3503, 0x88},
+ {0x3507, 0x00},
+ {0x3508, 0x00},
+ {0x3509, 0x80},
+ {0x350c, 0x00},
+ {0x350d, 0x80},
+ {0x3510, 0x00},
+ {0x3511, 0x00},
+ {0x3512, 0x20},
+ {0x3632, 0x00},
+ {0x3633, 0x10},
+ {0x3634, 0x10},
+ {0x3635, 0x10},
+ {0x3645, 0x13},
+ {0x3646, 0x81},
+ {0x3636, 0x10},
+ {0x3651, 0x0a},
+ {0x3656, 0x02},
+ {0x3659, 0x04},
+ {0x365a, 0xda},
+ {0x365b, 0xa2},
+ {0x365c, 0x04},
+ {0x365d, 0x1d},
+ {0x365e, 0x1a},
+ {0x3662, 0xd7},
+ {0x3667, 0x78},
+ {0x3669, 0x0a},
+ {0x366a, 0x92},
+ {0x3700, 0x54},
+ {0x3702, 0x10},
+ {0x3706, 0x42},
+ {0x3709, 0x30},
+ {0x370b, 0xc2},
+ {0x3714, 0x63},
+ {0x3715, 0x01},
+ {0x3716, 0x00},
+ {0x371a, 0x3e},
+ {0x3732, 0x0e},
+ {0x3733, 0x10},
+ {0x375f, 0x0e},
+ {0x3768, 0x30},
+ {0x3769, 0x44},
+ {0x376a, 0x22},
+ {0x377b, 0x20},
+ {0x377c, 0x00},
+ {0x377d, 0x0c},
+ {0x3798, 0x00},
+ {0x37a1, 0x55},
+ {0x37a8, 0x6d},
+ {0x37c2, 0x04},
+ {0x37c5, 0x00},
+ {0x37c8, 0x00},
+ {0x3800, 0x00},
+ {0x3801, 0x00},
+ {0x3802, 0x00},
+ {0x3803, 0x00},
+ {0x3804, 0x07},
+ {0x3805, 0x8f},
+ {0x3806, 0x04},
+ {0x3807, 0x47},
+ {0x3808, 0x07},
+ {0x3809, 0x88},
+ {0x380a, 0x04},
+ {0x380b, 0x40},
+ {0x380c, 0x08},
+ {0x380d, 0x70},
+ {0x380e, 0x04},
+ {0x380f, 0x56},
+ {0x3810, 0x00},
+ {0x3811, 0x04},
+ {0x3812, 0x00},
+ {0x3813, 0x04},
+ {0x3814, 0x01},
+ {0x3815, 0x01},
+ {0x3820, 0x80},
+ {0x3821, 0x46},
+ {0x3822, 0x84},
+ {0x3829, 0x00},
+ {0x382a, 0x01},
+ {0x382b, 0x01},
+ {0x3830, 0x04},
+ {0x3836, 0x01},
+ {0x3837, 0x08},
+ {0x3839, 0x01},
+ {0x383a, 0x00},
+ {0x383b, 0x08},
+ {0x383c, 0x00},
+ {0x3f0b, 0x00},
+ {0x4001, 0x20},
+ {0x4009, 0x07},
+ {0x4003, 0x10},
+ {0x4010, 0xe0},
+ {0x4016, 0x00},
+ {0x4017, 0x10},
+ {0x4044, 0x02},
+ {0x4304, 0x08},
+ {0x4307, 0x30},
+ {0x4320, 0x80},
+ {0x4322, 0x00},
+ {0x4323, 0x00},
+ {0x4324, 0x00},
+ {0x4325, 0x00},
+ {0x4326, 0x00},
+ {0x4327, 0x00},
+ {0x4328, 0x00},
+ {0x4329, 0x00},
+ {0x432c, 0x03},
+ {0x432d, 0x81},
+ {0x4501, 0x84},
+ {0x4502, 0x40},
+ {0x4503, 0x18},
+ {0x4504, 0x04},
+ {0x4508, 0x02},
+ {0x4601, 0x10},
+ {0x4800, 0x00},
+ {0x4816, 0x52},
+ {0x5000, 0x73}, /* 0x7f enable DPC */
+ {0x5001, 0x00},
+ {0x5005, 0x38},
+ {0x501e, 0x0d},
+ {0x5040, 0x00},
+ {0x5901, 0x00},
+ {0x3800, 0x00},
+ {0x3801, 0x00},
+ {0x3802, 0x00},
+ {0x3803, 0x00},
+ {0x3804, 0x07},
+ {0x3805, 0x8f},
+ {0x3806, 0x04},
+ {0x3807, 0x47},
+ {0x3808, 0x07},
+ {0x3809, 0x8c},
+ {0x380a, 0x04},
+ {0x380b, 0x44},
+ {0x3810, 0x00},
+ {0x3811, 0x00},
+ {0x3812, 0x00},
+ {0x3813, 0x01},
+ {0x4003, 0x40}, /* set Black level to 0x40 */
+};
+
static const char * const ov2740_test_pattern_menu[] = {
"Disabled",
"Color Bar",
@@ -295,6 +461,7 @@ static const char * const ov2740_test_pattern_menu[] = {
static const s64 link_freq_menu_items[] = {
OV2740_LINK_FREQ_360MHZ,
+ OV2740_LINK_FREQ_180MHZ,
};
static const struct ov2740_link_freq_config link_freq_configs[] = {
@@ -304,23 +471,46 @@ static const struct ov2740_link_freq_config link_freq_configs[] = {
.regs = mipi_data_rate_720mbps,
}
},
+ [OV2740_LINK_FREQ_180MHZ_INDEX] = {
+ .reg_list = {
+ .num_of_regs = ARRAY_SIZE(mipi_data_rate_360mbps),
+ .regs = mipi_data_rate_360mbps,
+ }
+ },
};
-static const struct ov2740_mode supported_modes[] = {
+static const struct ov2740_mode supported_modes_360mhz[] = {
{
.width = 1932,
.height = 1092,
.hts = 2160,
- .vts_def = OV2740_VTS_DEF,
- .vts_min = OV2740_VTS_MIN,
+ .vts_min = 1120,
+ .vts_def = 2186,
+ .vts_max = 32767,
.reg_list = {
- .num_of_regs = ARRAY_SIZE(mode_1932x1092_regs),
- .regs = mode_1932x1092_regs,
+ .num_of_regs = ARRAY_SIZE(mode_1932x1092_regs_360mhz),
+ .regs = mode_1932x1092_regs_360mhz,
},
.link_freq_index = OV2740_LINK_FREQ_360MHZ_INDEX,
},
};
+static const struct ov2740_mode supported_modes_180mhz[] = {
+ {
+ .width = 1932,
+ .height = 1092,
+ .hts = 2160,
+ .vts_min = 1110,
+ .vts_def = 1110,
+ .vts_max = 2047,
+ .reg_list = {
+ .num_of_regs = ARRAY_SIZE(mode_1932x1092_regs_180mhz),
+ .regs = mode_1932x1092_regs_180mhz,
+ },
+ .link_freq_index = OV2740_LINK_FREQ_180MHZ_INDEX,
+ },
+};
+
struct ov2740 {
struct v4l2_subdev sd;
struct media_pad pad;
@@ -333,12 +523,20 @@ struct ov2740 {
struct v4l2_ctrl *hblank;
struct v4l2_ctrl *exposure;
+ /* GPIOs, clocks */
+ struct gpio_desc *reset_gpio;
+ struct clk *clk;
+
/* Current mode */
const struct ov2740_mode *cur_mode;
/* NVM data inforamtion */
struct nvm_data *nvm;
+ /* Supported modes */
+ const struct ov2740_mode *supported_modes;
+ int supported_modes_count;
+
/* True if the device has been identified */
bool identified;
};
@@ -583,7 +781,7 @@ static int ov2740_init_controls(struct ov2740 *ov2740)
pixel_rate, 1, pixel_rate);
vblank_min = cur_mode->vts_min - cur_mode->height;
- vblank_max = OV2740_VTS_MAX - cur_mode->height;
+ vblank_max = cur_mode->vts_max - cur_mode->height;
vblank_default = cur_mode->vts_def - cur_mode->height;
ov2740->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov2740_ctrl_ops,
V4L2_CID_VBLANK, vblank_min,
@@ -735,6 +933,15 @@ static int ov2740_start_streaming(struct ov2740 *ov2740)
if (ov2740->nvm)
ov2740_load_otp_data(ov2740->nvm);
+ /* Reset the sensor */
+ ret = ov2740_write_reg(ov2740, 0x0103, 1, 0x01);
+ if (ret) {
+ dev_err(&client->dev, "failed to reset\n");
+ return ret;
+ }
+
+ usleep_range(10000, 15000);
+
link_freq_index = ov2740->cur_mode->link_freq_index;
reg_list = &link_freq_configs[link_freq_index].reg_list;
ret = ov2740_write_reg_list(ov2740, reg_list);
@@ -810,13 +1017,13 @@ static int ov2740_set_format(struct v4l2_subdev *sd,
const struct ov2740_mode *mode;
s32 vblank_def, h_blank;
- mode = v4l2_find_nearest_size(supported_modes,
- ARRAY_SIZE(supported_modes), width,
- height, fmt->format.width,
- fmt->format.height);
+ mode = v4l2_find_nearest_size(ov2740->supported_modes,
+ ov2740->supported_modes_count,
+ width, height,
+ fmt->format.width, fmt->format.height);
ov2740_update_pad_format(mode, &fmt->format);
- *v4l2_subdev_get_pad_format(sd, sd_state, fmt->pad) = fmt->format;
+ *v4l2_subdev_state_get_format(sd_state, fmt->pad) = fmt->format;
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY)
return 0;
@@ -830,7 +1037,7 @@ static int ov2740_set_format(struct v4l2_subdev *sd,
vblank_def = mode->vts_def - mode->height;
__v4l2_ctrl_modify_range(ov2740->vblank,
mode->vts_min - mode->height,
- OV2740_VTS_MAX - mode->height, 1, vblank_def);
+ mode->vts_max - mode->height, 1, vblank_def);
__v4l2_ctrl_s_ctrl(ov2740->vblank, vblank_def);
h_blank = mode->hts - mode->width;
__v4l2_ctrl_modify_range(ov2740->hblank, h_blank, h_blank, 1, h_blank);
@@ -854,7 +1061,10 @@ static int ov2740_enum_frame_size(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_size_enum *fse)
{
- if (fse->index >= ARRAY_SIZE(supported_modes))
+ struct ov2740 *ov2740 = to_ov2740(sd);
+ const struct ov2740_mode *supported_modes = ov2740->supported_modes;
+
+ if (fse->index >= ov2740->supported_modes_count)
return -EINVAL;
if (fse->code != MEDIA_BUS_FMT_SGRBG10_1X10)
@@ -868,12 +1078,13 @@ static int ov2740_enum_frame_size(struct v4l2_subdev *sd,
return 0;
}
-static int ov2740_init_cfg(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state)
+static int ov2740_init_state(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state)
{
- ov2740_update_pad_format(&supported_modes[0],
- v4l2_subdev_get_pad_format(sd, sd_state, 0));
+ struct ov2740 *ov2740 = to_ov2740(sd);
+ ov2740_update_pad_format(&ov2740->supported_modes[0],
+ v4l2_subdev_state_get_format(sd_state, 0));
return 0;
}
@@ -886,7 +1097,6 @@ static const struct v4l2_subdev_pad_ops ov2740_pad_ops = {
.set_fmt = ov2740_set_format,
.enum_mbus_code = ov2740_enum_mbus_code,
.enum_frame_size = ov2740_enum_frame_size,
- .init_cfg = ov2740_init_cfg,
};
static const struct v4l2_subdev_ops ov2740_subdev_ops = {
@@ -894,12 +1104,18 @@ static const struct v4l2_subdev_ops ov2740_subdev_ops = {
.pad = &ov2740_pad_ops,
};
+static const struct v4l2_subdev_internal_ops ov2740_internal_ops = {
+ .init_state = ov2740_init_state,
+};
+
static const struct media_entity_operations ov2740_subdev_entity_ops = {
.link_validate = v4l2_subdev_link_validate,
};
static int ov2740_check_hwcfg(struct device *dev)
{
+ struct v4l2_subdev *sd = dev_get_drvdata(dev);
+ struct ov2740 *ov2740 = to_ov2740(sd);
struct fwnode_handle *ep;
struct fwnode_handle *fwnode = dev_fwnode(dev);
struct v4l2_fwnode_endpoint bus_cfg = {
@@ -909,23 +1125,32 @@ static int ov2740_check_hwcfg(struct device *dev)
int ret;
unsigned int i, j;
+ /*
+ * Sometimes the fwnode graph is initialized by the bridge driver,
+ * wait for this.
+ */
+ ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
+ if (!ep)
+ return -EPROBE_DEFER;
+
ret = fwnode_property_read_u32(fwnode, "clock-frequency", &mclk);
- if (ret)
- return ret;
+ if (ret) {
+ fwnode_handle_put(ep);
+ return dev_err_probe(dev, ret,
+ "reading clock-frequency property\n");
+ }
- if (mclk != OV2740_MCLK)
+ if (mclk != OV2740_MCLK) {
+ fwnode_handle_put(ep);
return dev_err_probe(dev, -EINVAL,
"external clock %d is not supported\n",
mclk);
-
- ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
- if (!ep)
- return -EPROBE_DEFER;
+ }
ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
fwnode_handle_put(ep);
if (ret)
- return ret;
+ return dev_err_probe(dev, ret, "parsing endpoint failed\n");
if (bus_cfg.bus.mipi_csi2.num_data_lanes != OV2740_DATA_LANES) {
ret = dev_err_probe(dev, -EINVAL,
@@ -946,14 +1171,29 @@ static int ov2740_check_hwcfg(struct device *dev)
break;
}
- if (j == bus_cfg.nr_of_link_frequencies) {
- ret = dev_err_probe(dev, -EINVAL,
- "no link frequency %lld supported\n",
- link_freq_menu_items[i]);
- goto check_hwcfg_error;
+ if (j == bus_cfg.nr_of_link_frequencies)
+ continue;
+
+ switch (i) {
+ case OV2740_LINK_FREQ_360MHZ_INDEX:
+ ov2740->supported_modes = supported_modes_360mhz;
+ ov2740->supported_modes_count =
+ ARRAY_SIZE(supported_modes_360mhz);
+ break;
+ case OV2740_LINK_FREQ_180MHZ_INDEX:
+ ov2740->supported_modes = supported_modes_180mhz;
+ ov2740->supported_modes_count =
+ ARRAY_SIZE(supported_modes_180mhz);
+ break;
}
+
+ break; /* Prefer modes from first available link-freq */
}
+ if (!ov2740->supported_modes)
+ ret = dev_err_probe(dev, -EINVAL,
+ "no supported link frequencies\n");
+
check_hwcfg_error:
v4l2_fwnode_endpoint_free(&bus_cfg);
@@ -1047,6 +1287,32 @@ static int ov2740_register_nvmem(struct i2c_client *client,
return 0;
}
+static int ov2740_suspend(struct device *dev)
+{
+ struct v4l2_subdev *sd = dev_get_drvdata(dev);
+ struct ov2740 *ov2740 = to_ov2740(sd);
+
+ gpiod_set_value_cansleep(ov2740->reset_gpio, 1);
+ clk_disable_unprepare(ov2740->clk);
+ return 0;
+}
+
+static int ov2740_resume(struct device *dev)
+{
+ struct v4l2_subdev *sd = dev_get_drvdata(dev);
+ struct ov2740 *ov2740 = to_ov2740(sd);
+ int ret;
+
+ ret = clk_prepare_enable(ov2740->clk);
+ if (ret)
+ return ret;
+
+ gpiod_set_value_cansleep(ov2740->reset_gpio, 0);
+ msleep(20);
+
+ return 0;
+}
+
static int ov2740_probe(struct i2c_client *client)
{
struct device *dev = &client->dev;
@@ -1054,23 +1320,42 @@ static int ov2740_probe(struct i2c_client *client)
bool full_power;
int ret;
- ret = ov2740_check_hwcfg(&client->dev);
- if (ret)
- return dev_err_probe(dev, ret, "failed to check HW configuration\n");
-
ov2740 = devm_kzalloc(&client->dev, sizeof(*ov2740), GFP_KERNEL);
if (!ov2740)
return -ENOMEM;
v4l2_i2c_subdev_init(&ov2740->sd, client, &ov2740_subdev_ops);
+ ov2740->sd.internal_ops = &ov2740_internal_ops;
+
+ ret = ov2740_check_hwcfg(dev);
+ if (ret)
+ return dev_err_probe(dev, ret, "failed to check HW configuration\n");
+
+ ov2740->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
+ if (IS_ERR(ov2740->reset_gpio))
+ return dev_err_probe(dev, PTR_ERR(ov2740->reset_gpio),
+ "failed to get reset GPIO\n");
+
+ ov2740->clk = devm_clk_get_optional(dev, "clk");
+ if (IS_ERR(ov2740->clk))
+ return dev_err_probe(dev, PTR_ERR(ov2740->clk),
+ "failed to get clock\n");
+
full_power = acpi_dev_state_d0(&client->dev);
if (full_power) {
- ret = ov2740_identify_module(ov2740);
+ /* ACPI does not always clear the reset GPIO / enable the clock */
+ ret = ov2740_resume(dev);
if (ret)
- return dev_err_probe(dev, ret, "failed to find sensor\n");
+ return dev_err_probe(dev, ret, "failed to power on sensor\n");
+
+ ret = ov2740_identify_module(ov2740);
+ if (ret) {
+ dev_err_probe(dev, ret, "failed to find sensor\n");
+ goto probe_error_power_off;
+ }
}
- ov2740->cur_mode = &supported_modes[0];
+ ov2740->cur_mode = &ov2740->supported_modes[0];
ret = ov2740_init_controls(ov2740);
if (ret) {
dev_err_probe(dev, ret, "failed to init controls\n");
@@ -1121,9 +1406,16 @@ probe_error_media_entity_cleanup:
probe_error_v4l2_ctrl_handler_free:
v4l2_ctrl_handler_free(ov2740->sd.ctrl_handler);
+probe_error_power_off:
+ if (full_power)
+ ov2740_suspend(dev);
+
return ret;
}
+static DEFINE_RUNTIME_DEV_PM_OPS(ov2740_pm_ops, ov2740_suspend, ov2740_resume,
+ NULL);
+
static const struct acpi_device_id ov2740_acpi_ids[] = {
{"INT3474"},
{}
@@ -1135,6 +1427,7 @@ static struct i2c_driver ov2740_i2c_driver = {
.driver = {
.name = "ov2740",
.acpi_match_table = ov2740_acpi_ids,
+ .pm = pm_sleep_ptr(&ov2740_pm_ops),
},
.probe = ov2740_probe,
.remove = ov2740_remove,
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 08:49:06 +0000