diff options
| -rw-r--r-- | drivers/media/video/smiapp/smiapp-core.c | 55 | ||||
| -rw-r--r-- | drivers/media/video/smiapp/smiapp.h | 1 | ||||
| -rw-r--r-- | include/media/smiapp.h | 1 |
3 files changed, 50 insertions, 7 deletions
diff --git a/drivers/media/video/smiapp/smiapp-core.c b/drivers/media/video/smiapp/smiapp-core.c index a8a1db9563b1..999f3fc867c7 100644 --- a/drivers/media/video/smiapp/smiapp-core.c +++ b/drivers/media/video/smiapp/smiapp-core.c @@ -26,6 +26,7 @@ * */ +#include <linux/clk.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/gpio.h> @@ -1111,8 +1112,11 @@ static int smiapp_power_on(struct smiapp_sensor *sensor) } usleep_range(1000, 1000); - rval = sensor->platform_data->set_xclk(&sensor->src->sd, - sensor->platform_data->ext_clk); + if (sensor->platform_data->set_xclk) + rval = sensor->platform_data->set_xclk( + &sensor->src->sd, sensor->platform_data->ext_clk); + else + rval = clk_enable(sensor->ext_clk); if (rval < 0) { dev_dbg(&client->dev, "failed to set xclk\n"); goto out_xclk_fail; @@ -1231,7 +1235,10 @@ static int smiapp_power_on(struct smiapp_sensor *sensor) out_cci_addr_fail: if (sensor->platform_data->xshutdown != SMIAPP_NO_XSHUTDOWN) gpio_set_value(sensor->platform_data->xshutdown, 0); - sensor->platform_data->set_xclk(&sensor->src->sd, 0); + if (sensor->platform_data->set_xclk) + sensor->platform_data->set_xclk(&sensor->src->sd, 0); + else + clk_disable(sensor->ext_clk); out_xclk_fail: regulator_disable(sensor->vana); @@ -1256,7 +1263,10 @@ static void smiapp_power_off(struct smiapp_sensor *sensor) if (sensor->platform_data->xshutdown != SMIAPP_NO_XSHUTDOWN) gpio_set_value(sensor->platform_data->xshutdown, 0); - sensor->platform_data->set_xclk(&sensor->src->sd, 0); + if (sensor->platform_data->set_xclk) + sensor->platform_data->set_xclk(&sensor->src->sd, 0); + else + clk_disable(sensor->ext_clk); usleep_range(5000, 5000); regulator_disable(sensor->vana); sensor->streaming = 0; @@ -2327,6 +2337,28 @@ static int smiapp_registered(struct v4l2_subdev *subdev) return -ENODEV; } + if (!sensor->platform_data->set_xclk) { + sensor->ext_clk = clk_get(&client->dev, + sensor->platform_data->ext_clk_name); + if (IS_ERR(sensor->ext_clk)) { + dev_err(&client->dev, "could not get clock %s\n", + sensor->platform_data->ext_clk_name); + rval = -ENODEV; + goto out_clk_get; + } + + rval = clk_set_rate(sensor->ext_clk, + sensor->platform_data->ext_clk); + if (rval < 0) { + dev_err(&client->dev, + "unable to set clock %s freq to %u\n", + sensor->platform_data->ext_clk_name, + sensor->platform_data->ext_clk); + rval = -ENODEV; + goto out_clk_set_rate; + } + } + if (sensor->platform_data->xshutdown != SMIAPP_NO_XSHUTDOWN) { if (gpio_request_one(sensor->platform_data->xshutdown, 0, "SMIA++ xshutdown") != 0) { @@ -2334,7 +2366,7 @@ static int smiapp_registered(struct v4l2_subdev *subdev) "unable to acquire reset gpio %d\n", sensor->platform_data->xshutdown); rval = -ENODEV; - goto out_gpio_request; + goto out_clk_set_rate; } } @@ -2589,7 +2621,11 @@ out_smiapp_power_on: if (sensor->platform_data->xshutdown != SMIAPP_NO_XSHUTDOWN) gpio_free(sensor->platform_data->xshutdown); -out_gpio_request: +out_clk_set_rate: + clk_put(sensor->ext_clk); + sensor->ext_clk = NULL; + +out_clk_get: regulator_put(sensor->vana); sensor->vana = NULL; return rval; @@ -2778,7 +2814,10 @@ static int __exit smiapp_remove(struct i2c_client *client) if (sensor->power_count) { if (sensor->platform_data->xshutdown != SMIAPP_NO_XSHUTDOWN) gpio_set_value(sensor->platform_data->xshutdown, 0); - sensor->platform_data->set_xclk(&sensor->src->sd, 0); + if (sensor->platform_data->set_xclk) + sensor->platform_data->set_xclk(&sensor->src->sd, 0); + else + clk_disable(sensor->ext_clk); sensor->power_count = 0; } @@ -2794,6 +2833,8 @@ static int __exit smiapp_remove(struct i2c_client *client) smiapp_free_controls(sensor); if (sensor->platform_data->xshutdown != SMIAPP_NO_XSHUTDOWN) gpio_free(sensor->platform_data->xshutdown); + if (sensor->ext_clk) + clk_put(sensor->ext_clk); if (sensor->vana) regulator_put(sensor->vana); diff --git a/drivers/media/video/smiapp/smiapp.h b/drivers/media/video/smiapp/smiapp.h index 35b9216e48cd..587f7f11238d 100644 --- a/drivers/media/video/smiapp/smiapp.h +++ b/drivers/media/video/smiapp/smiapp.h @@ -198,6 +198,7 @@ struct smiapp_sensor { struct smiapp_subdev *pixel_array; struct smiapp_platform_data *platform_data; struct regulator *vana; + struct clk *ext_clk; u32 limits[SMIAPP_LIMIT_LAST]; u8 nbinning_subtypes; struct smiapp_binning_subtype binning_subtypes[SMIAPP_BINNING_SUBTYPES]; diff --git a/include/media/smiapp.h b/include/media/smiapp.h index a7877cd0733d..9ab07fd45d5c 100644 --- a/include/media/smiapp.h +++ b/include/media/smiapp.h @@ -77,6 +77,7 @@ struct smiapp_platform_data { struct smiapp_flash_strobe_parms *strobe_setup; int (*set_xclk)(struct v4l2_subdev *sd, int hz); + char *ext_clk_name; int xshutdown; /* gpio or SMIAPP_NO_XSHUTDOWN */ }; |