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| author | Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> | 2014-12-03 18:42:51 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2014-12-05 16:30:33 +0000 |
| commit | 86d88bfca4758a9a95cbd183c917d623abc3ce84 (patch) | |
| tree | 2fb3b851e0fc927ad50c0cabf847dcb5d87fe858 | |
| parent | b02cba8693fca6bd9166dd541f6a61cd82f6e231 (diff) | |
| download | op-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.c | 1 | ||||
| -rw-r--r-- | drivers/pcmcia/sa11xx_base.c | 14 |
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); |
