[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>
diff --git a/drivers/media/video/atmel-isi.c b/drivers/media/video/atmel-isi.c
index 9fe4519..ec3f6a0 100644
--- a/drivers/media/video/atmel-isi.c
+++ b/drivers/media/video/atmel-isi.c
@@ -922,7 +922,9 @@
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 @@
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 @@
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 @@
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;