korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-28 06:34:12 +08:00
Code Issues Packages Projects Releases Wiki Activity

spi: clps711x: Migrate to the new clk subsystem

Browse Source 
Currently clps711x arch have a fully functional CLK driver.
This patch migrates clps711x-spi driver to use the new CLK subsystem.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Alexander Shiyan 2014-09-20 11:05:09 +04:00 committed by Mark Brown
parent 7d1311b93e
commit a5b4b234e1
1 changed files with 2 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
drivers/spi/spi-clps711x.c
View File

@ -30,7 +30,6 @@
struct spi_clps711x_data {
void __iomem *syncio;
struct regmap *syscon;
struct regmap *syscon1;
struct clk *spi_clk;
u8 *tx_buf;
@ -47,27 +46,6 @@ static int spi_clps711x_setup(struct spi_device *spi)
return 0;
}
static void spi_clps711x_setup_xfer(struct spi_device *spi,
struct spi_transfer *xfer)
{
struct spi_master *master = spi->master;
struct spi_clps711x_data *hw = spi_master_get_devdata(master);
/* Setup SPI frequency divider */
if (xfer->speed_hz >= master->max_speed_hz)
regmap_update_bits(hw->syscon1, SYSCON_OFFSET,
SYSCON1_ADCKSEL_MASK, SYSCON1_ADCKSEL(3));
else if (xfer->speed_hz >= (master->max_speed_hz / 2))
regmap_update_bits(hw->syscon1, SYSCON_OFFSET,
SYSCON1_ADCKSEL_MASK, SYSCON1_ADCKSEL(2));
else if (xfer->speed_hz >= (master->max_speed_hz / 8))
regmap_update_bits(hw->syscon1, SYSCON_OFFSET,
SYSCON1_ADCKSEL_MASK, SYSCON1_ADCKSEL(1));
else
regmap_update_bits(hw->syscon1, SYSCON_OFFSET,
SYSCON1_ADCKSEL_MASK, SYSCON1_ADCKSEL(0));
}
static int spi_clps711x_prepare_message(struct spi_master *master,
struct spi_message *msg)
{
@ -87,7 +65,7 @@ static int spi_clps711x_transfer_one(struct spi_master *master,
struct spi_clps711x_data *hw = spi_master_get_devdata(master);
u8 data;
spi_clps711x_setup_xfer(spi, xfer);
clk_set_rate(hw->spi_clk, xfer->speed_hz ? : spi->max_speed_hz);
hw->len = xfer->len;
hw->bpw = xfer->bits_per_word;
@ -176,13 +154,11 @@ static int spi_clps711x_probe(struct platform_device *pdev)
}
}
hw->spi_clk = devm_clk_get(&pdev->dev, "spi");
hw->spi_clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(hw->spi_clk)) {
dev_err(&pdev->dev, "Can't get clocks\n");
ret = PTR_ERR(hw->spi_clk);
goto err_out;
}
master->max_speed_hz = clk_get_rate(hw->spi_clk);
hw->syscon = syscon_regmap_lookup_by_pdevname("syscon.3");
if (IS_ERR(hw->syscon)) {
@ -190,12 +166,6 @@ static int spi_clps711x_probe(struct platform_device *pdev)
goto err_out;
}
hw->syscon1 = syscon_regmap_lookup_by_pdevname("syscon.1");
if (IS_ERR(hw->syscon1)) {
ret = PTR_ERR(hw->syscon1);
goto err_out;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
hw->syncio = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(hw->syncio)) {