diff options
Diffstat (limited to 'drivers/media/i2c/tc358743.c')
| -rw-r--r-- | drivers/media/i2c/tc358743.c | 77 |
1 files changed, 69 insertions, 8 deletions
diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c index 3251cba89e8f..5788af238b86 100644 --- a/drivers/media/i2c/tc358743.c +++ b/drivers/media/i2c/tc358743.c @@ -33,6 +33,8 @@ #include <linux/delay.h> #include <linux/gpio/consumer.h> #include <linux/interrupt.h> +#include <linux/timer.h> +#include <linux/of_graph.h> #include <linux/videodev2.h> #include <linux/workqueue.h> #include <linux/v4l2-dv-timings.h> @@ -41,7 +43,7 @@ #include <media/v4l2-device.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-event.h> -#include <media/v4l2-of.h> +#include <media/v4l2-fwnode.h> #include <media/i2c/tc358743.h> #include "tc358743_regs.h" @@ -61,6 +63,8 @@ MODULE_LICENSE("GPL"); #define I2C_MAX_XFER_SIZE (EDID_BLOCK_SIZE + 2) +#define POLL_INTERVAL_MS 1000 + static const struct v4l2_dv_timings_cap tc358743_timings_cap = { .type = V4L2_DV_BT_656_1120, /* keep this initialization for compatibility with GCC < 4.4.6 */ @@ -76,7 +80,7 @@ static const struct v4l2_dv_timings_cap tc358743_timings_cap = { struct tc358743_state { struct tc358743_platform_data pdata; - struct v4l2_of_bus_mipi_csi2 bus; + struct v4l2_fwnode_bus_mipi_csi2 bus; struct v4l2_subdev sd; struct media_pad pad; struct v4l2_ctrl_handler hdl; @@ -91,6 +95,9 @@ struct tc358743_state { struct delayed_work delayed_work_enable_hotplug; + struct timer_list timer; + struct work_struct work_i2c_poll; + /* edid */ u8 edid_blocks_written; @@ -1296,7 +1303,6 @@ static int tc358743_isr(struct v4l2_subdev *sd, u32 status, bool *handled) tc358743_csi_err_int_handler(sd, handled); i2c_wr16(sd, INTSTATUS, MASK_CSI_INT); - intstatus &= ~MASK_CSI_INT; } intstatus = i2c_rd16(sd, INTSTATUS); @@ -1319,6 +1325,24 @@ static irqreturn_t tc358743_irq_handler(int irq, void *dev_id) return handled ? IRQ_HANDLED : IRQ_NONE; } +static void tc358743_irq_poll_timer(unsigned long arg) +{ + struct tc358743_state *state = (struct tc358743_state *)arg; + + schedule_work(&state->work_i2c_poll); + + mod_timer(&state->timer, jiffies + msecs_to_jiffies(POLL_INTERVAL_MS)); +} + +static void tc358743_work_i2c_poll(struct work_struct *work) +{ + struct tc358743_state *state = container_of(work, + struct tc358743_state, work_i2c_poll); + bool handled; + + tc358743_isr(&state->sd, 0, &handled); +} + static int tc358743_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh, struct v4l2_event_subscription *sub) { @@ -1473,6 +1497,23 @@ static int tc358743_s_stream(struct v4l2_subdev *sd, int enable) /* --------------- PAD OPS --------------- */ +static int tc358743_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_pad_config *cfg, + struct v4l2_subdev_mbus_code_enum *code) +{ + switch (code->index) { + case 0: + code->code = MEDIA_BUS_FMT_RGB888_1X24; + break; + case 1: + code->code = MEDIA_BUS_FMT_UYVY8_1X16; + break; + default: + return -EINVAL; + } + return 0; +} + static int tc358743_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *format) @@ -1642,6 +1683,7 @@ static const struct v4l2_subdev_video_ops tc358743_video_ops = { }; static const struct v4l2_subdev_pad_ops tc358743_pad_ops = { + .enum_mbus_code = tc358743_enum_mbus_code, .set_fmt = tc358743_set_fmt, .get_fmt = tc358743_get_fmt, .get_edid = tc358743_g_edid, @@ -1695,7 +1737,7 @@ static void tc358743_gpio_reset(struct tc358743_state *state) static int tc358743_probe_of(struct tc358743_state *state) { struct device *dev = &state->i2c_client->dev; - struct v4l2_of_endpoint *endpoint; + struct v4l2_fwnode_endpoint *endpoint; struct device_node *ep; struct clk *refclk; u32 bps_pr_lane; @@ -1715,7 +1757,7 @@ static int tc358743_probe_of(struct tc358743_state *state) return -EINVAL; } - endpoint = v4l2_of_alloc_parse_endpoint(ep); + endpoint = v4l2_fwnode_endpoint_alloc_parse(of_fwnode_handle(ep)); if (IS_ERR(endpoint)) { dev_err(dev, "failed to parse endpoint\n"); return PTR_ERR(endpoint); @@ -1730,7 +1772,11 @@ static int tc358743_probe_of(struct tc358743_state *state) state->bus = endpoint->bus.mipi_csi2; - clk_prepare_enable(refclk); + ret = clk_prepare_enable(refclk); + if (ret) { + dev_err(dev, "Failed! to enable clock\n"); + goto free_endpoint; + } state->pdata.refclk_hz = clk_get_rate(refclk); state->pdata.ddc5v_delay = DDC5V_DELAY_100_MS; @@ -1803,7 +1849,7 @@ static int tc358743_probe_of(struct tc358743_state *state) disable_clk: clk_disable_unprepare(refclk); free_endpoint: - v4l2_of_free_endpoint(endpoint); + v4l2_fwnode_endpoint_free(endpoint); return ret; } #else @@ -1887,6 +1933,8 @@ static int tc358743_probe(struct i2c_client *client, if (err < 0) goto err_hdl; + state->mbus_fmt_code = MEDIA_BUS_FMT_RGB888_1X24; + sd->dev = &client->dev; err = v4l2_async_register_subdev(sd); if (err < 0) @@ -1901,7 +1949,6 @@ static int tc358743_probe(struct i2c_client *client, tc358743_s_dv_timings(sd, &default_timing); - state->mbus_fmt_code = MEDIA_BUS_FMT_RGB888_1X24; tc358743_set_csi_color_space(sd); tc358743_init_interrupts(sd); @@ -1914,6 +1961,14 @@ static int tc358743_probe(struct i2c_client *client, "tc358743", state); if (err) goto err_work_queues; + } else { + INIT_WORK(&state->work_i2c_poll, + tc358743_work_i2c_poll); + state->timer.data = (unsigned long)state; + state->timer.function = tc358743_irq_poll_timer; + state->timer.expires = jiffies + + msecs_to_jiffies(POLL_INTERVAL_MS); + add_timer(&state->timer); } tc358743_enable_interrupts(sd, tx_5v_power_present(sd)); @@ -1929,6 +1984,8 @@ static int tc358743_probe(struct i2c_client *client, return 0; err_work_queues: + if (!state->i2c_client->irq) + flush_work(&state->work_i2c_poll); cancel_delayed_work(&state->delayed_work_enable_hotplug); mutex_destroy(&state->confctl_mutex); err_hdl: @@ -1942,6 +1999,10 @@ static int tc358743_remove(struct i2c_client *client) struct v4l2_subdev *sd = i2c_get_clientdata(client); struct tc358743_state *state = to_state(sd); + if (!state->i2c_client->irq) { + del_timer_sync(&state->timer); + flush_work(&state->work_i2c_poll); + } cancel_delayed_work(&state->delayed_work_enable_hotplug); v4l2_async_unregister_subdev(sd); v4l2_device_unregister_subdev(sd); |