From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
To: barebox@lists.infradead.org
Subject: [PATCH 3/3] spi: atmel: request cs pin via gpiolib
Date: Fri, 28 Dec 2012 17:46:31 +0100 [thread overview]
Message-ID: <1356713191-9614-3-git-send-email-plagnioj@jcrosoft.com> (raw)
In-Reply-To: <1356713191-9614-1-git-send-email-plagnioj@jcrosoft.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
---
drivers/spi/atmel_spi.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/spi/atmel_spi.c b/drivers/spi/atmel_spi.c
index 793933e..08cb416 100644
--- a/drivers/spi/atmel_spi.c
+++ b/drivers/spi/atmel_spi.c
@@ -371,6 +371,7 @@ err:
static int atmel_spi_probe(struct device_d *dev)
{
int ret = 0;
+ int i;
struct spi_master *master;
struct atmel_spi *as;
struct at91_spi_platform_data *pdata = dev->platform_data;
@@ -399,6 +400,12 @@ static int atmel_spi_probe(struct device_d *dev)
as->cs_pins = pdata->chipselect;
as->regs = dev_request_mem_region(dev, 0);
+ for (i = 0; i <= master->num_chipselect; i++) {
+ ret = gpio_request(as->cs_pins[i], dev_name(dev));
+ if (ret)
+ goto out_gpio;
+ }
+
/* Initialize the hardware */
clk_enable(as->clk);
spi_writel(as, CR, SPI_BIT(SWRST));
@@ -418,6 +425,7 @@ static int atmel_spi_probe(struct device_d *dev)
out_reset_hw:
spi_writel(as, CR, SPI_BIT(SWRST));
spi_writel(as, CR, SPI_BIT(SWRST)); /* AT91SAM9263 Rev B workaround */
+out_gpio:
clk_disable(as->clk);
clk_put(as->clk);
out_free:
--
1.7.10.4
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next prev parent reply other threads:[~2012-12-28 16:48 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-28 16:43 [PATCH 0/3] atmel nand/spi/udc: request gpio Jean-Christophe PLAGNIOL-VILLARD
2012-12-28 16:46 ` [PATCH 1/3] mtd: atmel_nand: request and configure pio via gpiolib Jean-Christophe PLAGNIOL-VILLARD
2012-12-28 16:46 ` [PATCH 2/3] usb: at91_udc: request and configure vbus pin " Jean-Christophe PLAGNIOL-VILLARD
2012-12-28 16:46 ` Jean-Christophe PLAGNIOL-VILLARD [this message]
2013-01-02 10:07 ` [PATCH 0/3] atmel nand/spi/udc: request gpio Sascha Hauer
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