diff options
Diffstat (limited to 'drivers/media/i2c/adv7604.c')
| -rw-r--r-- | drivers/media/i2c/adv7604.c | 80 |
1 files changed, 56 insertions, 24 deletions
diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c index beb2841ceae5..0b362eeb55c7 100644 --- a/drivers/media/i2c/adv7604.c +++ b/drivers/media/i2c/adv7604.c @@ -164,6 +164,7 @@ struct adv76xx_state { struct adv76xx_platform_data pdata; struct gpio_desc *hpd_gpio[4]; + struct gpio_desc *reset_gpio; struct v4l2_subdev sd; struct media_pad pads[ADV76XX_PAD_MAX]; @@ -184,7 +185,6 @@ struct adv76xx_state { u16 spa_port_a[2]; struct v4l2_fract aspect_ratio; u32 rgb_quantization_range; - struct workqueue_struct *work_queues; struct delayed_work delayed_work_enable_hotplug; bool restart_stdi_once; @@ -779,11 +779,31 @@ static const struct v4l2_dv_timings_cap adv76xx_timings_cap_digital = { V4L2_DV_BT_CAP_CUSTOM) }; -static inline const struct v4l2_dv_timings_cap * -adv76xx_get_dv_timings_cap(struct v4l2_subdev *sd) +/* + * Return the DV timings capabilities for the requested sink pad. As a special + * case, pad value -1 returns the capabilities for the currently selected input. + */ +static const struct v4l2_dv_timings_cap * +adv76xx_get_dv_timings_cap(struct v4l2_subdev *sd, int pad) { - return is_digital_input(sd) ? &adv76xx_timings_cap_digital : - &adv7604_timings_cap_analog; + if (pad == -1) { + struct adv76xx_state *state = to_state(sd); + + pad = state->selected_input; + } + + switch (pad) { + case ADV76XX_PAD_HDMI_PORT_A: + case ADV7604_PAD_HDMI_PORT_B: + case ADV7604_PAD_HDMI_PORT_C: + case ADV7604_PAD_HDMI_PORT_D: + return &adv76xx_timings_cap_digital; + + case ADV7604_PAD_VGA_RGB: + case ADV7604_PAD_VGA_COMP: + default: + return &adv7604_timings_cap_analog; + } } @@ -1329,7 +1349,7 @@ static int stdi2dv_timings(struct v4l2_subdev *sd, const struct v4l2_bt_timings *bt = &v4l2_dv_timings_presets[i].bt; if (!v4l2_valid_dv_timings(&v4l2_dv_timings_presets[i], - adv76xx_get_dv_timings_cap(sd), + adv76xx_get_dv_timings_cap(sd, -1), adv76xx_check_dv_timings, NULL)) continue; if (vtotal(bt) != stdi->lcf + 1) @@ -1430,18 +1450,22 @@ static int adv76xx_enum_dv_timings(struct v4l2_subdev *sd, return -EINVAL; return v4l2_enum_dv_timings_cap(timings, - adv76xx_get_dv_timings_cap(sd), adv76xx_check_dv_timings, NULL); + adv76xx_get_dv_timings_cap(sd, timings->pad), + adv76xx_check_dv_timings, NULL); } static int adv76xx_dv_timings_cap(struct v4l2_subdev *sd, struct v4l2_dv_timings_cap *cap) { struct adv76xx_state *state = to_state(sd); + unsigned int pad = cap->pad; if (cap->pad >= state->source_pad) return -EINVAL; - *cap = *adv76xx_get_dv_timings_cap(sd); + *cap = *adv76xx_get_dv_timings_cap(sd, pad); + cap->pad = pad; + return 0; } @@ -1450,9 +1474,9 @@ static int adv76xx_dv_timings_cap(struct v4l2_subdev *sd, static void adv76xx_fill_optional_dv_timings_fields(struct v4l2_subdev *sd, struct v4l2_dv_timings *timings) { - v4l2_find_dv_timings_cap(timings, adv76xx_get_dv_timings_cap(sd), - is_digital_input(sd) ? 250000 : 1000000, - adv76xx_check_dv_timings, NULL); + v4l2_find_dv_timings_cap(timings, adv76xx_get_dv_timings_cap(sd, -1), + is_digital_input(sd) ? 250000 : 1000000, + adv76xx_check_dv_timings, NULL); } static unsigned int adv7604_read_hdmi_pixelclock(struct v4l2_subdev *sd) @@ -1620,7 +1644,7 @@ static int adv76xx_s_dv_timings(struct v4l2_subdev *sd, bt = &timings->bt; - if (!v4l2_valid_dv_timings(timings, adv76xx_get_dv_timings_cap(sd), + if (!v4l2_valid_dv_timings(timings, adv76xx_get_dv_timings_cap(sd, -1), adv76xx_check_dv_timings, NULL)) return -ERANGE; @@ -2130,8 +2154,7 @@ static int adv76xx_set_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid) } /* enable hotplug after 100 ms */ - queue_delayed_work(state->work_queues, - &state->delayed_work_enable_hotplug, HZ / 10); + schedule_delayed_work(&state->delayed_work_enable_hotplug, HZ / 10); return 0; } @@ -2996,6 +3019,19 @@ static int configure_regmaps(struct adv76xx_state *state) return 0; } +static void adv76xx_reset(struct adv76xx_state *state) +{ + if (state->reset_gpio) { + /* ADV76XX can be reset by a low reset pulse of minimum 5 ms. */ + gpiod_set_value_cansleep(state->reset_gpio, 0); + usleep_range(5000, 10000); + gpiod_set_value_cansleep(state->reset_gpio, 1); + /* It is recommended to wait 5 ms after the low pulse before */ + /* an I2C write is performed to the ADV76XX. */ + usleep_range(5000, 10000); + } +} + static int adv76xx_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -3059,6 +3095,12 @@ static int adv76xx_probe(struct i2c_client *client, if (state->hpd_gpio[i]) v4l_info(client, "Handling HPD %u GPIO\n", i); } + state->reset_gpio = devm_gpiod_get_optional(&client->dev, "reset", + GPIOD_OUT_HIGH); + if (IS_ERR(state->reset_gpio)) + return PTR_ERR(state->reset_gpio); + + adv76xx_reset(state); state->timings = cea640x480; state->format = adv76xx_format_info(state, MEDIA_BUS_FMT_YUYV8_2X8); @@ -3182,14 +3224,6 @@ static int adv76xx_probe(struct i2c_client *client, } } - /* work queues */ - state->work_queues = create_singlethread_workqueue(client->name); - if (!state->work_queues) { - v4l2_err(sd, "Could not create work queue\n"); - err = -ENOMEM; - goto err_i2c; - } - INIT_DELAYED_WORK(&state->delayed_work_enable_hotplug, adv76xx_delayed_work_enable_hotplug); @@ -3225,7 +3259,6 @@ err_entity: media_entity_cleanup(&sd->entity); err_work_queues: cancel_delayed_work(&state->delayed_work_enable_hotplug); - destroy_workqueue(state->work_queues); err_i2c: adv76xx_unregister_clients(state); err_hdl: @@ -3241,7 +3274,6 @@ static int adv76xx_remove(struct i2c_client *client) struct adv76xx_state *state = to_state(sd); cancel_delayed_work(&state->delayed_work_enable_hotplug); - destroy_workqueue(state->work_queues); v4l2_async_unregister_subdev(sd); media_entity_cleanup(&sd->entity); adv76xx_unregister_clients(to_state(sd)); |