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path: root/drivers/media/i2c/imx214.c
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Diffstat (limited to 'drivers/media/i2c/imx214.c')
-rw-r--r--drivers/media/i2c/imx214.c247
1 files changed, 122 insertions, 125 deletions
diff --git a/drivers/media/i2c/imx214.c b/drivers/media/i2c/imx214.c
index a0cef9e61b41..94ebe625c9e6 100644
--- a/drivers/media/i2c/imx214.c
+++ b/drivers/media/i2c/imx214.c
@@ -881,6 +881,109 @@ static const struct v4l2_ctrl_ops imx214_ctrl_ops = {
.s_ctrl = imx214_set_ctrl,
};
+static int imx214_pll_calculate(struct imx214 *imx214, struct ccs_pll *pll,
+ unsigned int link_freq)
+{
+ struct ccs_pll_limits limits = {
+ .min_ext_clk_freq_hz = 6000000,
+ .max_ext_clk_freq_hz = 27000000,
+
+ .vt_fr = {
+ .min_pre_pll_clk_div = 1,
+ .max_pre_pll_clk_div = 15,
+ /* Value is educated guess as we don't have a spec */
+ .min_pll_ip_clk_freq_hz = 6000000,
+ /* Value is educated guess as we don't have a spec */
+ .max_pll_ip_clk_freq_hz = 12000000,
+ .min_pll_multiplier = 12,
+ .max_pll_multiplier = 1200,
+ .min_pll_op_clk_freq_hz = 338000000,
+ .max_pll_op_clk_freq_hz = 1200000000,
+ },
+ .vt_bk = {
+ .min_sys_clk_div = 2,
+ .max_sys_clk_div = 4,
+ .min_pix_clk_div = 5,
+ .max_pix_clk_div = 10,
+ .min_pix_clk_freq_hz = 30000000,
+ .max_pix_clk_freq_hz = 120000000,
+ },
+ .op_bk = {
+ .min_sys_clk_div = 1,
+ .max_sys_clk_div = 2,
+ .min_pix_clk_div = 6,
+ .max_pix_clk_div = 10,
+ .min_pix_clk_freq_hz = 30000000,
+ .max_pix_clk_freq_hz = 120000000,
+ },
+
+ .min_line_length_pck_bin = IMX214_PPL_DEFAULT,
+ .min_line_length_pck = IMX214_PPL_DEFAULT,
+ };
+ unsigned int num_lanes = imx214->bus_cfg.bus.mipi_csi2.num_data_lanes;
+
+ /*
+ * There are no documented constraints on the sys clock frequency, for
+ * either branch. Recover them based on the PLL output clock frequency
+ * and sys_clk_div limits on one hand, and the pix clock frequency and
+ * the pix_clk_div limits on the other hand.
+ */
+ limits.vt_bk.min_sys_clk_freq_hz =
+ max(limits.vt_fr.min_pll_op_clk_freq_hz / limits.vt_bk.max_sys_clk_div,
+ limits.vt_bk.min_pix_clk_freq_hz * limits.vt_bk.min_pix_clk_div);
+ limits.vt_bk.max_sys_clk_freq_hz =
+ min(limits.vt_fr.max_pll_op_clk_freq_hz / limits.vt_bk.min_sys_clk_div,
+ limits.vt_bk.max_pix_clk_freq_hz * limits.vt_bk.max_pix_clk_div);
+
+ limits.op_bk.min_sys_clk_freq_hz =
+ max(limits.vt_fr.min_pll_op_clk_freq_hz / limits.op_bk.max_sys_clk_div,
+ limits.op_bk.min_pix_clk_freq_hz * limits.op_bk.min_pix_clk_div);
+ limits.op_bk.max_sys_clk_freq_hz =
+ min(limits.vt_fr.max_pll_op_clk_freq_hz / limits.op_bk.min_sys_clk_div,
+ limits.op_bk.max_pix_clk_freq_hz * limits.op_bk.max_pix_clk_div);
+
+ memset(pll, 0, sizeof(*pll));
+
+ pll->bus_type = CCS_PLL_BUS_TYPE_CSI2_DPHY;
+ pll->op_lanes = num_lanes;
+ pll->vt_lanes = num_lanes;
+ pll->csi2.lanes = num_lanes;
+
+ pll->binning_horizontal = 1;
+ pll->binning_vertical = 1;
+ pll->scale_m = 1;
+ pll->scale_n = 1;
+ pll->bits_per_pixel =
+ IMX214_CSI_DATA_FORMAT_RAW10 & IMX214_BITS_PER_PIXEL_MASK;
+ pll->flags = CCS_PLL_FLAG_LANE_SPEED_MODEL;
+ pll->link_freq = link_freq;
+ pll->ext_clk_freq_hz = clk_get_rate(imx214->xclk);
+
+ return ccs_pll_calculate(imx214->dev, &limits, pll);
+}
+
+static int imx214_pll_update(struct imx214 *imx214)
+{
+ u64 link_freq;
+ int ret;
+
+ link_freq = imx214->bus_cfg.link_frequencies[imx214->link_freq->val];
+ ret = imx214_pll_calculate(imx214, &imx214->pll, link_freq);
+ if (ret) {
+ dev_err(imx214->dev, "PLL calculations failed: %d\n", ret);
+ return ret;
+ }
+
+ ret = v4l2_ctrl_s_ctrl_int64(imx214->pixel_rate,
+ imx214->pll.pixel_rate_pixel_array);
+ if (ret) {
+ dev_err(imx214->dev, "failed to set pixel rate\n");
+ return ret;
+ }
+
+ return 0;
+}
+
static int imx214_ctrls_init(struct imx214 *imx214)
{
static const struct v4l2_area unit_size = {
@@ -1003,6 +1106,13 @@ static int imx214_ctrls_init(struct imx214 *imx214)
return ret;
}
+ ret = imx214_pll_update(imx214);
+ if (ret < 0) {
+ v4l2_ctrl_handler_free(ctrl_hdlr);
+ dev_err(imx214->dev, "failed to update PLL\n");
+ return ret;
+ }
+
imx214->sd.ctrl_handler = ctrl_hdlr;
return 0;
@@ -1029,8 +1139,8 @@ static int imx214_start_streaming(struct imx214 *imx214)
return ret;
}
- bit_rate_mbps = (imx214->pll.pixel_rate_csi / 1000000)
- * imx214->pll.bits_per_pixel;
+ bit_rate_mbps = imx214->pll.pixel_rate_csi / 1000000
+ * imx214->pll.bits_per_pixel;
ret = cci_write(imx214->regmap, IMX214_REG_REQ_LINK_BIT_RATE,
IMX214_LINK_BIT_RATE_MBPS(bit_rate_mbps), NULL);
if (ret) {
@@ -1115,109 +1225,6 @@ err_rpm_put:
return ret;
}
-static int imx214_pll_calculate(struct imx214 *imx214, struct ccs_pll *pll,
- unsigned int link_freq)
-{
- struct ccs_pll_limits limits = {
- .min_ext_clk_freq_hz = 6000000,
- .max_ext_clk_freq_hz = 27000000,
-
- .vt_fr = {
- .min_pre_pll_clk_div = 1,
- .max_pre_pll_clk_div = 15,
- /* Value is educated guess as we don't have a spec */
- .min_pll_ip_clk_freq_hz = 6000000,
- /* Value is educated guess as we don't have a spec */
- .max_pll_ip_clk_freq_hz = 12000000,
- .min_pll_multiplier = 12,
- .max_pll_multiplier = 1200,
- .min_pll_op_clk_freq_hz = 338000000,
- .max_pll_op_clk_freq_hz = 1200000000,
- },
- .vt_bk = {
- .min_sys_clk_div = 2,
- .max_sys_clk_div = 4,
- .min_pix_clk_div = 5,
- .max_pix_clk_div = 10,
- .min_pix_clk_freq_hz = 30000000,
- .max_pix_clk_freq_hz = 120000000,
- },
- .op_bk = {
- .min_sys_clk_div = 1,
- .max_sys_clk_div = 2,
- .min_pix_clk_div = 6,
- .max_pix_clk_div = 10,
- .min_pix_clk_freq_hz = 30000000,
- .max_pix_clk_freq_hz = 120000000,
- },
-
- .min_line_length_pck_bin = IMX214_PPL_DEFAULT,
- .min_line_length_pck = IMX214_PPL_DEFAULT,
- };
- unsigned int num_lanes = imx214->bus_cfg.bus.mipi_csi2.num_data_lanes;
-
- /*
- * There are no documented constraints on the sys clock frequency, for
- * either branch. Recover them based on the PLL output clock frequency
- * and sys_clk_div limits on one hand, and the pix clock frequency and
- * the pix_clk_div limits on the other hand.
- */
- limits.vt_bk.min_sys_clk_freq_hz =
- max(limits.vt_fr.min_pll_op_clk_freq_hz / limits.vt_bk.max_sys_clk_div,
- limits.vt_bk.min_pix_clk_freq_hz * limits.vt_bk.min_pix_clk_div);
- limits.vt_bk.max_sys_clk_freq_hz =
- min(limits.vt_fr.max_pll_op_clk_freq_hz / limits.vt_bk.min_sys_clk_div,
- limits.vt_bk.max_pix_clk_freq_hz * limits.vt_bk.max_pix_clk_div);
-
- limits.op_bk.min_sys_clk_freq_hz =
- max(limits.vt_fr.min_pll_op_clk_freq_hz / limits.op_bk.max_sys_clk_div,
- limits.op_bk.min_pix_clk_freq_hz * limits.op_bk.min_pix_clk_div);
- limits.op_bk.max_sys_clk_freq_hz =
- min(limits.vt_fr.max_pll_op_clk_freq_hz / limits.op_bk.min_sys_clk_div,
- limits.op_bk.max_pix_clk_freq_hz * limits.op_bk.max_pix_clk_div);
-
- memset(pll, 0, sizeof(*pll));
-
- pll->bus_type = CCS_PLL_BUS_TYPE_CSI2_DPHY;
- pll->op_lanes = num_lanes;
- pll->vt_lanes = num_lanes;
- pll->csi2.lanes = num_lanes;
-
- pll->binning_horizontal = 1;
- pll->binning_vertical = 1;
- pll->scale_m = 1;
- pll->scale_n = 1;
- pll->bits_per_pixel =
- IMX214_CSI_DATA_FORMAT_RAW10 & IMX214_BITS_PER_PIXEL_MASK;
- pll->flags = CCS_PLL_FLAG_LANE_SPEED_MODEL;
- pll->link_freq = link_freq;
- pll->ext_clk_freq_hz = clk_get_rate(imx214->xclk);
-
- return ccs_pll_calculate(imx214->dev, &limits, pll);
-}
-
-static int imx214_pll_update(struct imx214 *imx214)
-{
- u64 link_freq;
- int ret;
-
- link_freq = imx214->bus_cfg.link_frequencies[imx214->link_freq->val];
- ret = imx214_pll_calculate(imx214, &imx214->pll, link_freq);
- if (ret) {
- dev_err(imx214->dev, "PLL calculations failed: %d\n", ret);
- return ret;
- }
-
- ret = v4l2_ctrl_s_ctrl_int64(imx214->pixel_rate,
- imx214->pll.pixel_rate_pixel_array);
- if (ret) {
- dev_err(imx214->dev, "failed to set pixel rate\n");
- return ret;
- }
-
- return 0;
-}
-
static int imx214_get_frame_interval(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_interval *fival)
@@ -1324,10 +1331,11 @@ static int imx214_identify_module(struct imx214 *imx214)
return 0;
}
-static int imx214_parse_fwnode(struct device *dev, struct imx214 *imx214)
+static int imx214_parse_fwnode(struct imx214 *imx214)
{
+ struct fwnode_handle *endpoint __free(fwnode_handle) = NULL;
struct v4l2_fwnode_endpoint *bus_cfg = &imx214->bus_cfg;
- struct fwnode_handle *endpoint;
+ struct device *dev = imx214->dev;
unsigned int i;
int ret;
@@ -1337,11 +1345,8 @@ static int imx214_parse_fwnode(struct device *dev, struct imx214 *imx214)
bus_cfg->bus_type = V4L2_MBUS_CSI2_DPHY;
ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, bus_cfg);
- fwnode_handle_put(endpoint);
- if (ret) {
- dev_err_probe(dev, ret, "parsing endpoint node failed\n");
- goto error;
- }
+ if (ret)
+ return dev_err_probe(dev, ret, "parsing endpoint node failed\n");
/* Check the number of MIPI CSI2 data lanes */
if (bus_cfg->bus.mipi_csi2.num_data_lanes != 4) {
@@ -1357,18 +1362,16 @@ static int imx214_parse_fwnode(struct device *dev, struct imx214 *imx214)
u64 freq = bus_cfg->link_frequencies[i];
struct ccs_pll pll;
- if (!imx214_pll_calculate(imx214, &pll, freq))
- break;
if (freq == IMX214_DEFAULT_LINK_FREQ_LEGACY) {
dev_warn(dev,
"link-frequencies %d not supported, please review your DT. Continuing anyway\n",
IMX214_DEFAULT_LINK_FREQ);
freq = IMX214_DEFAULT_LINK_FREQ;
- if (imx214_pll_calculate(imx214, &pll, freq))
- continue;
bus_cfg->link_frequencies[i] = freq;
- break;
}
+
+ if (!imx214_pll_calculate(imx214, &pll, freq))
+ break;
}
if (i == bus_cfg->nr_of_link_frequencies)
@@ -1396,7 +1399,7 @@ static int imx214_probe(struct i2c_client *client)
imx214->dev = dev;
- imx214->xclk = devm_clk_get(dev, NULL);
+ imx214->xclk = devm_v4l2_sensor_clk_get(dev, NULL);
if (IS_ERR(imx214->xclk))
return dev_err_probe(dev, PTR_ERR(imx214->xclk),
"failed to get xclk\n");
@@ -1415,7 +1418,7 @@ static int imx214_probe(struct i2c_client *client)
return dev_err_probe(dev, PTR_ERR(imx214->regmap),
"failed to initialize CCI\n");
- ret = imx214_parse_fwnode(dev, imx214);
+ ret = imx214_parse_fwnode(imx214);
if (ret)
return ret;
@@ -1459,12 +1462,6 @@ static int imx214_probe(struct i2c_client *client)
pm_runtime_set_active(imx214->dev);
pm_runtime_enable(imx214->dev);
- ret = imx214_pll_update(imx214);
- if (ret < 0) {
- dev_err_probe(dev, ret, "failed to update PLL\n");
- goto error_subdev_cleanup;
- }
-
ret = v4l2_async_register_subdev_sensor(&imx214->sd);
if (ret < 0) {
dev_err_probe(dev, ret,
generated by cgit (git 2.34.1) at 2025-10-03 23:42:47 +0000