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authorDmitry Eremin-Solenikov <dbaryshkov@gmail.com>2014-12-03 18:42:51 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2014-12-05 16:30:33 +0000
commit86d88bfca4758a9a95cbd183c917d623abc3ce84 (patch)
tree2fb3b851e0fc927ad50c0cabf847dcb5d87fe858
parentb02cba8693fca6bd9166dd541f6a61cd82f6e231 (diff)
downloadop-kernel-dev-86d88bfca4758a9a95cbd183c917d623abc3ce84.zip
op-kernel-dev-86d88bfca4758a9a95cbd183c917d623abc3ce84.tar.gz
ARM: 8247/2: pcmcia: sa1100: make use of device clock
Use per-device clock (instead of calling cpufreq_get(0), which can return 0 if no cpu frequency driver is selected) to program timings. Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
-rw-r--r--drivers/pcmcia/sa1100_generic.c1
-rw-r--r--drivers/pcmcia/sa11xx_base.c14
2 files changed, 13 insertions, 2 deletions
diff --git a/drivers/pcmcia/sa1100_generic.c b/drivers/pcmcia/sa1100_generic.c
index ff8a027..d2ab060 100644
--- a/drivers/pcmcia/sa1100_generic.c
+++ b/drivers/pcmcia/sa1100_generic.c
@@ -93,6 +93,7 @@ static int sa11x0_drv_pcmcia_remove(struct platform_device *dev)
for (i = 0; i < sinfo->nskt; i++)
soc_pcmcia_remove_one(&sinfo->skt[i]);
+ clk_put(sinfo->clk);
kfree(sinfo);
return 0;
}
diff --git a/drivers/pcmcia/sa11xx_base.c b/drivers/pcmcia/sa11xx_base.c
index 54d3089..cf6de2c 100644
--- a/drivers/pcmcia/sa11xx_base.c
+++ b/drivers/pcmcia/sa11xx_base.c
@@ -135,14 +135,16 @@ sa1100_pcmcia_frequency_change(struct soc_pcmcia_socket *skt,
static int
sa1100_pcmcia_set_timing(struct soc_pcmcia_socket *skt)
{
- return sa1100_pcmcia_set_mecr(skt, cpufreq_get(0));
+ unsigned long clk = clk_get_rate(skt->clk);
+
+ return sa1100_pcmcia_set_mecr(skt, clk / 1000);
}
static int
sa1100_pcmcia_show_timing(struct soc_pcmcia_socket *skt, char *buf)
{
struct soc_pcmcia_timing timing;
- unsigned int clock = cpufreq_get(0);
+ unsigned int clock = clk_get_rate(skt->clk);
unsigned long mecr = MECR;
char *p = buf;
@@ -218,6 +220,11 @@ int sa11xx_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops,
struct skt_dev_info *sinfo;
struct soc_pcmcia_socket *skt;
int i, ret = 0;
+ struct clk *clk;
+
+ clk = clk_get(dev, NULL);
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
sa11xx_drv_pcmcia_ops(ops);
@@ -226,12 +233,14 @@ int sa11xx_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops,
return -ENOMEM;
sinfo->nskt = nr;
+ sinfo->clk = clk;
/* Initialize processor specific parameters */
for (i = 0; i < nr; i++) {
skt = &sinfo->skt[i];
skt->nr = first + i;
+ skt->clk = clk;
soc_pcmcia_init_one(skt, ops, dev);
ret = sa11xx_drv_pcmcia_add_one(skt);
@@ -242,6 +251,7 @@ int sa11xx_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops,
if (ret) {
while (--i >= 0)
soc_pcmcia_remove_one(&sinfo->skt[i]);
+ clk_put(clk);
kfree(sinfo);
} else {
dev_set_drvdata(dev, sinfo);
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