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[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>
This commit is contained in:
Josh Wu 2012-01-11 00:58:29 -03:00 committed by Mauro Carvalho Chehab
parent 7256522460
commit 03652e0ad4
1 changed files with 14 additions and 0 deletions
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14
drivers/media/video/atmel-isi.c
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@ -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;