Use the v4l2_link_frequencies_to_bitmap() helper to figure out which
driver-supported link frequencies can be used on a given system.
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
---
drivers/media/i2c/imx355.c | 53 ++++++++++----------------------------
1 file changed, 14 insertions(+), 39 deletions(-)
diff --git a/drivers/media/i2c/imx355.c b/drivers/media/i2c/imx355.c
index 8c995c58743a..51e3f3ae53da 100644
--- a/drivers/media/i2c/imx355.c
+++ b/drivers/media/i2c/imx355.c
@@ -56,7 +56,7 @@
#define IMX355_REG_ORIENTATION 0x0101
/* default link frequency and external clock */
-#define IMX355_LINK_FREQ_DEFAULT 360000000
+#define IMX355_LINK_FREQ_DEFAULT 360000000LL
#define IMX355_EXT_CLK 19200000
#define IMX355_LINK_FREQ_INDEX 0
@@ -93,8 +93,7 @@ struct imx355_mode {
struct imx355_hwcfg {
u32 ext_clk; /* sensor external clk */
- s64 *link_freqs; /* CSI-2 link frequencies */
- unsigned int nr_of_link_freqs;
+ unsigned long link_freq_bitmap;
};
struct imx355 {
@@ -115,7 +114,6 @@ struct imx355 {
const struct imx355_mode *cur_mode;
struct imx355_hwcfg *hwcfg;
- s64 link_def_freq; /* CSI-2 link default frequency */
/*
* Mutex for serialized access:
@@ -879,7 +877,10 @@ static const char * const imx355_test_pattern_menu[] = {
"Pseudorandom Sequence (PN9)",
};
-/* supported link frequencies */
+/*
+ * When adding more than the one below, make sure the disallowed ones will
+ * actually be disabled in the LINK_FREQ control.
+ */
static const s64 link_freq_menu_items[] = {
IMX355_LINK_FREQ_DEFAULT,
};
@@ -1356,7 +1357,7 @@ imx355_set_pad_format(struct v4l2_subdev *sd,
*framefmt = fmt->format;
} else {
imx355->cur_mode = mode;
- pixel_rate = imx355->link_def_freq * 2 * 4;
+ pixel_rate = IMX355_LINK_FREQ_DEFAULT * 2 * 4;
do_div(pixel_rate, 10);
__v4l2_ctrl_s_ctrl_int64(imx355->pixel_rate, pixel_rate);
/* Update limits and set FPS to default */
@@ -1543,7 +1544,7 @@ static int imx355_init_controls(struct imx355 *imx355)
imx355->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
/* pixel_rate = link_freq * 2 * nr_of_lanes / bits_per_sample */
- pixel_rate = imx355->link_def_freq * 2 * 4;
+ pixel_rate = IMX355_LINK_FREQ_DEFAULT * 2 * 4;
do_div(pixel_rate, 10);
/* By default, PIXEL_RATE is read only */
imx355->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx355_ctrl_ops,
@@ -1620,7 +1621,6 @@ static struct imx355_hwcfg *imx355_get_hwcfg(struct device *dev)
};
struct fwnode_handle *ep;
struct fwnode_handle *fwnode = dev_fwnode(dev);
- unsigned int i;
int ret;
if (!fwnode)
@@ -1652,24 +1652,14 @@ static struct imx355_hwcfg *imx355_get_hwcfg(struct device *dev)
goto out_err;
}
- dev_dbg(dev, "num of link freqs: %d", bus_cfg.nr_of_link_frequencies);
- if (!bus_cfg.nr_of_link_frequencies) {
- dev_warn(dev, "no link frequencies defined");
- goto out_err;
- }
-
- cfg->nr_of_link_freqs = bus_cfg.nr_of_link_frequencies;
- cfg->link_freqs = devm_kcalloc(dev,
- bus_cfg.nr_of_link_frequencies + 1,
- sizeof(*cfg->link_freqs), GFP_KERNEL);
- if (!cfg->link_freqs)
+ ret = v4l2_link_frequencies_to_bitmap(dev, bus_cfg.link_frequencies,
+ bus_cfg.nr_of_link_frequencies,
+ link_freq_menu_items,
+ ARRAY_SIZE(link_freq_menu_items),
+ &cfg->link_freq_bitmap);
+ if (ret)
goto out_err;
- for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++) {
- cfg->link_freqs[i] = bus_cfg.link_frequencies[i];
- dev_dbg(dev, "link_freq[%d] = %lld", i, cfg->link_freqs[i]);
- }
-
v4l2_fwnode_endpoint_free(&bus_cfg);
fwnode_handle_put(ep);
return cfg;
@@ -1684,7 +1674,6 @@ static int imx355_probe(struct i2c_client *client)
{
struct imx355 *imx355;
int ret;
- u32 i;
imx355 = devm_kzalloc(&client->dev, sizeof(*imx355), GFP_KERNEL);
if (!imx355)
@@ -1709,20 +1698,6 @@ static int imx355_probe(struct i2c_client *client)
goto error_probe;
}
- imx355->link_def_freq = link_freq_menu_items[IMX355_LINK_FREQ_INDEX];
- for (i = 0; i < imx355->hwcfg->nr_of_link_freqs; i++) {
- if (imx355->hwcfg->link_freqs[i] == imx355->link_def_freq) {
- dev_dbg(&client->dev, "link freq index %d matched", i);
- break;
- }
- }
-
- if (i == imx355->hwcfg->nr_of_link_freqs) {
- dev_err(&client->dev, "no link frequency supported");
- ret = -EINVAL;
- goto error_probe;
- }
-
/* Set default mode to max resolution */
imx355->cur_mode = &supported_modes[0];
--
2.39.2
