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authorJosh Wu <josh.wu@atmel.com>2012-01-11 00:58:29 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-01-23 18:13:21 -0200
commit03652e0ad4b140523ec5ef7fec8d2b3c7218447b (patch)
tree871ec63aeb4fb1ff9553e007ed96316c33417cab /drivers
parent72565224609a23a60d10fcdf42f87a2fa8f7b16d (diff)
downloadlinux-linaro-stable-03652e0ad4b140523ec5ef7fec8d2b3c7218447b.tar.gz
[media] V4L: atmel-isi: add clk_prepare()/clk_unprepare() functions
Signed-off-by: Josh Wu <josh.wu@atmel.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/media/video/atmel-isi.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/media/video/atmel-isi.c b/drivers/media/video/atmel-isi.c
index 9fe4519176a4..ec3f6a06f9c3 100644
--- a/drivers/media/video/atmel-isi.c
+++ b/drivers/media/video/atmel-isi.c
@@ -922,7 +922,9 @@ static int __devexit atmel_isi_remove(struct platform_device *pdev)
isi->fb_descriptors_phys);
iounmap(isi->regs);
+ clk_unprepare(isi->mck);
clk_put(isi->mck);
+ clk_unprepare(isi->pclk);
clk_put(isi->pclk);
kfree(isi);
@@ -955,6 +957,10 @@ static int __devinit atmel_isi_probe(struct platform_device *pdev)
if (IS_ERR(pclk))
return PTR_ERR(pclk);
+ ret = clk_prepare(pclk);
+ if (ret)
+ goto err_clk_prepare_pclk;
+
isi = kzalloc(sizeof(struct atmel_isi), GFP_KERNEL);
if (!isi) {
ret = -ENOMEM;
@@ -978,6 +984,10 @@ static int __devinit atmel_isi_probe(struct platform_device *pdev)
goto err_clk_get;
}
+ ret = clk_prepare(isi->mck);
+ if (ret)
+ goto err_clk_prepare_mck;
+
/* Set ISI_MCK's frequency, it should be faster than pixel clock */
ret = clk_set_rate(isi->mck, pdata->mck_hz);
if (ret < 0)
@@ -1059,10 +1069,14 @@ err_alloc_ctx:
isi->fb_descriptors_phys);
err_alloc_descriptors:
err_set_mck_rate:
+ clk_unprepare(isi->mck);
+err_clk_prepare_mck:
clk_put(isi->mck);
err_clk_get:
kfree(isi);
err_alloc_isi:
+ clk_unprepare(pclk);
+err_clk_prepare_pclk:
clk_put(pclk);
return ret;