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authorShawn Guo <shawn.guo@linaro.org>2011-07-10 01:16:40 +0800
committerGrant Likely <grant.likely@secretlab.ca>2011-07-14 13:47:13 -0600
commitc2387cb9e55f9c85ed33a5bf086f348312158133 (patch)
tree5ce8c1bb62bd6ebd7f6d09ad778faa2e92d1b9c5 /drivers/spi
parent04ee585495a6d474d1ff9a821b52abf7db99cad3 (diff)
spi/imx: copy gpio number passed by platform data into driver private data
It copies gpio number passed via platform data embedded pointer into driver private data, so that we do not need to refer to this embedded pointer passed by platform data after probe function exits. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi-imx.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index 87981b41796..591ebc3546d 100644
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -84,7 +84,6 @@ struct spi_imx_data {
int irq;
struct clk *clk;
unsigned long spi_clk;
- int *chipselect;
unsigned int count;
void (*tx)(struct spi_imx_data *);
@@ -94,6 +93,7 @@ struct spi_imx_data {
unsigned int txfifo; /* number of words pushed in tx FIFO */
struct spi_imx_devtype_data *devtype_data;
+ int chipselect[0];
};
static inline int is_imx27_cspi(struct spi_imx_data *d)
@@ -741,7 +741,7 @@ static int __devinit spi_imx_probe(struct platform_device *pdev)
struct spi_master *master;
struct spi_imx_data *spi_imx;
struct resource *res;
- int i, ret;
+ int i, ret, num_cs;
mxc_platform_info = dev_get_platdata(&pdev->dev);
if (!mxc_platform_info) {
@@ -749,20 +749,22 @@ static int __devinit spi_imx_probe(struct platform_device *pdev)
return -EINVAL;
}
- master = spi_alloc_master(&pdev->dev, sizeof(struct spi_imx_data));
+ num_cs = mxc_platform_info->num_chipselect;
+ master = spi_alloc_master(&pdev->dev,
+ sizeof(struct spi_imx_data) + sizeof(int) * num_cs);
if (!master)
return -ENOMEM;
platform_set_drvdata(pdev, master);
master->bus_num = pdev->id;
- master->num_chipselect = mxc_platform_info->num_chipselect;
+ master->num_chipselect = num_cs;
spi_imx = spi_master_get_devdata(master);
spi_imx->bitbang.master = spi_master_get(master);
- spi_imx->chipselect = mxc_platform_info->chipselect;
for (i = 0; i < master->num_chipselect; i++) {
+ spi_imx->chipselect[i] = mxc_platform_info->chipselect[i];
if (spi_imx->chipselect[i] < 0)
continue;
ret = gpio_request(spi_imx->chipselect[i], DRIVER_NAME);