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[media] s5p-mfc: Remove special clock usage in driver 

MFC uses two clocks - MFC gate clock and special clock
which is named as "sclk_mfc" in exynos4 and "aclk_333" in
exynos5 SoC. The driver was doing just a clk_prepare on
this special clock without a clk_enable call. As this
sclk is the parent of gate clock, it gets prepared and
enabled along with the gate clock. So there is no need
for the driver to use this sclk. This patch removes the
sclk usage from driver.

Signed-off-by: Arun Kumar K <arun.kk@samsung.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Arun Kumar K 2013-05-27 03:39:29 -03:00 committed by Mauro Carvalho Chehab
parent 644469aefb
commit fc906b6d18
3 changed files with 0 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/media/platform/s5p-mfc/s5p_mfc.c
View File

@ -1362,7 +1362,6 @@ static struct s5p_mfc_variant mfc_drvdata_v5 = {
.port_num = MFC_NUM_PORTS,
.buf_size = &buf_size_v5,
.buf_align = &mfc_buf_align_v5,
.mclk_name = "sclk_mfc",
.fw_name = "s5p-mfc.fw",
};
@ -1389,7 +1388,6 @@ static struct s5p_mfc_variant mfc_drvdata_v6 = {
.port_num = MFC_NUM_PORTS_V6,
.buf_size = &buf_size_v6,
.buf_align = &mfc_buf_align_v6,
.mclk_name = "aclk_333",
.fw_name = "s5p-mfc-v6.fw",
};

1
drivers/media/platform/s5p-mfc/s5p_mfc_common.h
View File

@ -232,7 +232,6 @@ struct s5p_mfc_variant {
unsigned int port_num;
struct s5p_mfc_buf_size *buf_size;
struct s5p_mfc_buf_align *buf_align;
char *mclk_name;
char *fw_name;
};

19
drivers/media/platform/s5p-mfc/s5p_mfc_pm.c
View File

@ -50,19 +50,6 @@ int s5p_mfc_init_pm(struct s5p_mfc_dev *dev)
goto err_p_ip_clk;
}
pm->clock = clk_get(&dev->plat_dev->dev, dev->variant->mclk_name);
if (IS_ERR(pm->clock)) {
mfc_err("Failed to get MFC clock\n");
ret = PTR_ERR(pm->clock);
goto err_g_ip_clk_2;
}
ret = clk_prepare(pm->clock);
if (ret) {
mfc_err("Failed to prepare MFC clock\n");
goto err_p_ip_clk_2;
}
atomic_set(&pm->power, 0);
#ifdef CONFIG_PM_RUNTIME
pm->device = &dev->plat_dev->dev;
@ -72,10 +59,6 @@ int s5p_mfc_init_pm(struct s5p_mfc_dev *dev)
atomic_set(&clk_ref, 0);
#endif
return 0;
err_p_ip_clk_2:
clk_put(pm->clock);
err_g_ip_clk_2:
clk_unprepare(pm->clock_gate);
err_p_ip_clk:
clk_put(pm->clock_gate);
err_g_ip_clk:
@ -86,8 +69,6 @@ void s5p_mfc_final_pm(struct s5p_mfc_dev *dev)
{
clk_unprepare(pm->clock_gate);
clk_put(pm->clock_gate);
clk_unprepare(pm->clock);
clk_put(pm->clock);
#ifdef CONFIG_PM_RUNTIME
pm_runtime_disable(pm->device);
#endif