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[media] media: marvell-ccic: use devm to release clk

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This patch uses devm to release the clks instead of releasing
manually.
And it adds enable/disable mipi_clk when getting its rate.

Signed-off-by: Libin Yang <lbyang@marvell.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Libin Yang 2013-11-05 05:29:07 -03:00 committed by Mauro Carvalho Chehab
parent fe4a0f1c7d
commit fa507e4d32
1 changed files with 8 additions and 31 deletions
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39
drivers/media/platform/marvell-ccic/mmp-driver.c
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@ -142,12 +142,6 @@ static int mmpcam_power_up(struct mcam_camera *mcam)
struct mmp_camera *cam = mcam_to_cam(mcam);
struct mmp_camera_platform_data *pdata;
if (mcam->bus_type == V4L2_MBUS_CSI2) {
cam->mipi_clk = devm_clk_get(mcam->dev, "mipi");
if ((IS_ERR(cam->mipi_clk) && mcam->dphy[2] == 0))
return PTR_ERR(cam->mipi_clk);
}
/*
* Turn on power and clocks to the controller.
*/
@ -186,12 +180,6 @@ static void mmpcam_power_down(struct mcam_camera *mcam)
gpio_set_value(pdata->sensor_power_gpio, 0);
gpio_set_value(pdata->sensor_reset_gpio, 0);
if (mcam->bus_type == V4L2_MBUS_CSI2 && !IS_ERR(cam->mipi_clk)) {
if (cam->mipi_clk)
devm_clk_put(mcam->dev, cam->mipi_clk);
cam->mipi_clk = NULL;
}
mcam_clk_disable(mcam);
}
@ -292,8 +280,9 @@ void mmpcam_calc_dphy(struct mcam_camera *mcam)
return;
/* get the escape clk, this is hard coded */
clk_prepare_enable(cam->mipi_clk);
tx_clk_esc = (clk_get_rate(cam->mipi_clk) / 1000000) / 12;
clk_disable_unprepare(cam->mipi_clk);
/*
* dphy[2] - CSI2_DPHY6:
* bit 0 ~ bit 7: CK Term Enable
@ -325,19 +314,6 @@ static irqreturn_t mmpcam_irq(int irq, void *data)
return IRQ_RETVAL(handled);
}
static void mcam_deinit_clk(struct mcam_camera *mcam)
{
unsigned int i;
for (i = 0; i < NR_MCAM_CLK; i++) {
if (!IS_ERR(mcam->clk[i])) {
if (mcam->clk[i])
devm_clk_put(mcam->dev, mcam->clk[i]);
}
mcam->clk[i] = NULL;
}
}
static void mcam_init_clk(struct mcam_camera *mcam)
{
unsigned int i;
@ -371,7 +347,6 @@ static int mmpcam_probe(struct platform_device *pdev)
if (cam == NULL)
return -ENOMEM;
cam->pdev = pdev;
cam->mipi_clk = NULL;
INIT_LIST_HEAD(&cam->devlist);
mcam = &cam->mcam;
@ -387,6 +362,11 @@ static int mmpcam_probe(struct platform_device *pdev)
mcam->mclk_div = pdata->mclk_div;
mcam->bus_type = pdata->bus_type;
mcam->dphy = pdata->dphy;
if (mcam->bus_type == V4L2_MBUS_CSI2) {
cam->mipi_clk = devm_clk_get(mcam->dev, "mipi");
if ((IS_ERR(cam->mipi_clk) && mcam->dphy[2] == 0))
return PTR_ERR(cam->mipi_clk);
}
mcam->mipi_enabled = false;
mcam->lane = pdata->lane;
mcam->chip_id = MCAM_ARMADA610;
@ -444,7 +424,7 @@ static int mmpcam_probe(struct platform_device *pdev)
*/
ret = mmpcam_power_up(mcam);
if (ret)
goto out_deinit_clk;
return ret;
ret = mccic_register(mcam);
if (ret)
goto out_power_down;
@ -469,8 +449,6 @@ static int mmpcam_probe(struct platform_device *pdev)
mccic_shutdown(mcam);
out_power_down:
mmpcam_power_down(mcam);
out_deinit_clk:
mcam_deinit_clk(mcam);
return ret;
}
@ -482,7 +460,6 @@ static int mmpcam_remove(struct mmp_camera *cam)
mmpcam_remove_device(cam);
mccic_shutdown(mcam);
mmpcam_power_down(mcam);
mcam_deinit_clk(mcam);
return 0;
}