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spi: mpc512x: adjust to OF based clock lookup

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after device tree based clock lookup became available, the peripheral
driver need no longer construct clock names which include the PSC index,
remove the "psc%d_mclk" template and unconditionally use 'mclk'

acquire and release the 'ipg' clock item for register access as well

Cc: Mark Brown <broonie@kernel.org>
Cc: linux-spi@vger.kernel.org
Signed-off-by: Gerhard Sittig <gsi@denx.de>
Acked-by: Mark Brown <broonie@linaro.org>
Signed-off-by: Anatolij Gustschin <agust@denx.de>
This commit is contained in:
Gerhard Sittig 2013-11-30 23:51:28 +01:00 committed by Anatolij Gustschin
parent 7d71d5b2e8
commit dff148ad7b
1 changed files with 18 additions and 8 deletions
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26
drivers/spi/spi-mpc512x-psc.c
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@ -40,6 +40,7 @@ struct mpc512x_psc_spi {
unsigned int irq;
u8 bits_per_word;
struct clk *clk_mclk;
struct clk *clk_ipg;
u32 mclk_rate;
struct completion txisrdone;
@ -475,8 +476,6 @@ static int mpc512x_psc_spi_do_probe(struct device *dev, u32 regaddr,
struct spi_master *master;
int ret;
void *tempp;
int psc_num;
char clk_name[16];
struct clk *clk;
master = spi_alloc_master(dev, sizeof *mps);
@ -520,9 +519,7 @@ static int mpc512x_psc_spi_do_probe(struct device *dev, u32 regaddr,
goto free_master;
init_completion(&mps->txisrdone);
psc_num = master->bus_num;
snprintf(clk_name, sizeof(clk_name), "psc%d_mclk", psc_num);
clk = devm_clk_get(dev, clk_name);
clk = devm_clk_get(dev, "mclk");
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
goto free_irq;
@ -533,17 +530,29 @@ static int mpc512x_psc_spi_do_probe(struct device *dev, u32 regaddr,
mps->clk_mclk = clk;
mps->mclk_rate = clk_get_rate(clk);
clk = devm_clk_get(dev, "ipg");
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
goto free_mclk_clock;
}
ret = clk_prepare_enable(clk);
if (ret)
goto free_mclk_clock;
mps->clk_ipg = clk;
ret = mpc512x_psc_spi_port_config(master, mps);
if (ret < 0)
goto free_clock;
goto free_ipg_clock;
ret = devm_spi_register_master(dev, master);
if (ret < 0)
goto free_clock;
goto free_ipg_clock;
return ret;
free_clock:
free_ipg_clock:
clk_disable_unprepare(mps->clk_ipg);
free_mclk_clock:
clk_disable_unprepare(mps->clk_mclk);
free_irq:
free_irq(mps->irq, mps);
@ -561,6 +570,7 @@ static int mpc512x_psc_spi_do_remove(struct device *dev)
struct mpc512x_psc_spi *mps = spi_master_get_devdata(master);
clk_disable_unprepare(mps->clk_mclk);
clk_disable_unprepare(mps->clk_ipg);
free_irq(mps->irq, mps);
if (mps->psc)
iounmap(mps->psc);