summaryrefslogtreecommitdiff
path: root/drivers/spi
diff options
context:
space:
mode:
authorThomas Abraham <thomas.abraham@linaro.org>2013-04-16 07:42:57 +0400
committerGrant Likely <grant.likely@linaro.org>2013-04-16 14:52:34 +0400
commit00ab5392cbc3f87ddfeada311e22f55dfb0bc5c6 (patch)
tree0967884baa8c4cdd3da5c5d8a5dbdf9a0eb55e8c /drivers/spi
parent19624236cce1b33a5d43895a92e3a9d438dc36e2 (diff)
downloadlinux-00ab5392cbc3f87ddfeada311e22f55dfb0bc5c6.tar.xz
spi/s3c64xx: let device core setup the default pin configuration
With device core now able to setup the default pin configuration, the pin configuration code based on the deprecated Samsung specific gpio bindings is removed. Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Signed-off-by: Doug Anderson <dianders@chromium.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Doug Anderson <dianders@chromium.org> Tested-by: Doug Anderson <dianders@chromium.org> Signed-off-by: Grant Likely <grant.likely@linaro.org>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi-s3c64xx.c66
1 files changed, 4 insertions, 62 deletions
diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index 4989aeb793fd..4ab992bfea83 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -1148,41 +1148,6 @@ static void s3c64xx_spi_hwinit(struct s3c64xx_spi_driver_data *sdd, int channel)
}
#ifdef CONFIG_OF
-static int s3c64xx_spi_parse_dt_gpio(struct s3c64xx_spi_driver_data *sdd)
-{
- struct device *dev = &sdd->pdev->dev;
- int idx, gpio, ret;
-
- /* find gpios for mosi, miso and clock lines */
- for (idx = 0; idx < 3; idx++) {
- gpio = of_get_gpio(dev->of_node, idx);
- if (!gpio_is_valid(gpio)) {
- dev_err(dev, "invalid gpio[%d]: %d\n", idx, gpio);
- goto free_gpio;
- }
- sdd->gpios[idx] = gpio;
- ret = gpio_request(gpio, "spi-bus");
- if (ret) {
- dev_err(dev, "gpio [%d] request failed: %d\n",
- gpio, ret);
- goto free_gpio;
- }
- }
- return 0;
-
-free_gpio:
- while (--idx >= 0)
- gpio_free(sdd->gpios[idx]);
- return -EINVAL;
-}
-
-static void s3c64xx_spi_dt_gpio_free(struct s3c64xx_spi_driver_data *sdd)
-{
- unsigned int idx;
- for (idx = 0; idx < 3; idx++)
- gpio_free(sdd->gpios[idx]);
-}
-
static struct s3c64xx_spi_info *s3c64xx_spi_parse_dt(struct device *dev)
{
struct s3c64xx_spi_info *sci;
@@ -1215,15 +1180,6 @@ static struct s3c64xx_spi_info *s3c64xx_spi_parse_dt(struct device *dev)
{
return dev->platform_data;
}
-
-static int s3c64xx_spi_parse_dt_gpio(struct s3c64xx_spi_driver_data *sdd)
-{
- return -EINVAL;
-}
-
-static void s3c64xx_spi_dt_gpio_free(struct s3c64xx_spi_driver_data *sdd)
-{
-}
#endif
static const struct of_device_id s3c64xx_spi_dt_match[];
@@ -1344,10 +1300,7 @@ static int s3c64xx_spi_probe(struct platform_device *pdev)
goto err0;
}
- if (!sci->cfg_gpio && pdev->dev.of_node) {
- if (s3c64xx_spi_parse_dt_gpio(sdd))
- return -EBUSY;
- } else if (sci->cfg_gpio == NULL || sci->cfg_gpio()) {
+ if (sci->cfg_gpio && sci->cfg_gpio()) {
dev_err(&pdev->dev, "Unable to config gpio\n");
ret = -EBUSY;
goto err0;
@@ -1358,13 +1311,13 @@ static int s3c64xx_spi_probe(struct platform_device *pdev)
if (IS_ERR(sdd->clk)) {
dev_err(&pdev->dev, "Unable to acquire clock 'spi'\n");
ret = PTR_ERR(sdd->clk);
- goto err1;
+ goto err0;
}
if (clk_prepare_enable(sdd->clk)) {
dev_err(&pdev->dev, "Couldn't enable clock 'spi'\n");
ret = -EBUSY;
- goto err1;
+ goto err0;
}
sprintf(clk_name, "spi_busclk%d", sci->src_clk_nr);
@@ -1421,9 +1374,6 @@ err3:
clk_disable_unprepare(sdd->src_clk);
err2:
clk_disable_unprepare(sdd->clk);
-err1:
- if (!sdd->cntrlr_info->cfg_gpio && pdev->dev.of_node)
- s3c64xx_spi_dt_gpio_free(sdd);
err0:
platform_set_drvdata(pdev, NULL);
spi_master_put(master);
@@ -1446,9 +1396,6 @@ static int s3c64xx_spi_remove(struct platform_device *pdev)
clk_disable_unprepare(sdd->clk);
- if (!sdd->cntrlr_info->cfg_gpio && pdev->dev.of_node)
- s3c64xx_spi_dt_gpio_free(sdd);
-
platform_set_drvdata(pdev, NULL);
spi_master_put(master);
@@ -1467,9 +1414,6 @@ static int s3c64xx_spi_suspend(struct device *dev)
clk_disable_unprepare(sdd->src_clk);
clk_disable_unprepare(sdd->clk);
- if (!sdd->cntrlr_info->cfg_gpio && dev->of_node)
- s3c64xx_spi_dt_gpio_free(sdd);
-
sdd->cur_speed = 0; /* Output Clock is stopped */
return 0;
@@ -1481,9 +1425,7 @@ static int s3c64xx_spi_resume(struct device *dev)
struct s3c64xx_spi_driver_data *sdd = spi_master_get_devdata(master);
struct s3c64xx_spi_info *sci = sdd->cntrlr_info;
- if (!sci->cfg_gpio && dev->of_node)
- s3c64xx_spi_parse_dt_gpio(sdd);
- else
+ if (sci->cfg_gpio)
sci->cfg_gpio();
/* Enable the clock */