From 1f858d0a7f2bdc37bdb56476381ecd9a5292e0e6 Mon Sep 17 00:00:00 2001
From: Thomas Abraham <thomas.abraham@linaro.org>
Date: Fri, 13 Jul 2012 07:15:14 +0900
Subject: [PATCH] --- yaml --- r: 313322 b: refs/heads/master c:
 1c20c200ef96c50b3075f71220c8c8bc018a93c8 h: refs/heads/master v: v3

---
 [refs]                                        |  2 +-
 .../plat-samsung/include/plat/s3c64xx-spi.h   |  2 --
 trunk/drivers/spi/spi-s3c64xx.c               | 31 ++++++++++++++++---
 3 files changed, 27 insertions(+), 8 deletions(-)

diff --git a/[refs] b/[refs]
index fdd0c123726d..0a38e7a67b48 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4d0efdd5889b1c81a62aa07a47d3d55be4b65b61
+refs/heads/master: 1c20c200ef96c50b3075f71220c8c8bc018a93c8
diff --git a/trunk/arch/arm/plat-samsung/include/plat/s3c64xx-spi.h b/trunk/arch/arm/plat-samsung/include/plat/s3c64xx-spi.h
index c818a7c18929..ceba18d23a5a 100644
--- a/trunk/arch/arm/plat-samsung/include/plat/s3c64xx-spi.h
+++ b/trunk/arch/arm/plat-samsung/include/plat/s3c64xx-spi.h
@@ -18,7 +18,6 @@ struct platform_device;
  * @fb_delay: Slave specific feedback delay.
  *            Refer to FB_CLK_SEL register definition in SPI chapter.
  * @line: Custom 'identity' of the CS line.
- * @set_level: CS line control.
  *
  * This is per SPI-Slave Chipselect information.
  * Allocate and initialize one in machine init code and make the
@@ -27,7 +26,6 @@ struct platform_device;
 struct s3c64xx_spi_csinfo {
 	u8 fb_delay;
 	unsigned line;
-	void (*set_level)(unsigned line_id, int lvl);
 };
 
 /**
diff --git a/trunk/drivers/spi/spi-s3c64xx.c b/trunk/drivers/spi/spi-s3c64xx.c
index 0a9e43e635aa..e4182ea2f306 100644
--- a/trunk/drivers/spi/spi-s3c64xx.c
+++ b/trunk/drivers/spi/spi-s3c64xx.c
@@ -27,6 +27,7 @@
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/spi/spi.h>
+#include <linux/gpio.h>
 
 #include <mach/dma.h>
 #include <plat/s3c64xx-spi.h>
@@ -411,14 +412,14 @@ static inline void enable_cs(struct s3c64xx_spi_driver_data *sdd,
 		if (sdd->tgl_spi != spi) { /* if last mssg on diff device */
 			/* Deselect the last toggled device */
 			cs = sdd->tgl_spi->controller_data;
-			cs->set_level(cs->line,
-					spi->mode & SPI_CS_HIGH ? 0 : 1);
+			gpio_set_value(cs->line,
+				spi->mode & SPI_CS_HIGH ? 0 : 1);
 		}
 		sdd->tgl_spi = NULL;
 	}
 
 	cs = spi->controller_data;
-	cs->set_level(cs->line, spi->mode & SPI_CS_HIGH ? 1 : 0);
+	gpio_set_value(cs->line, spi->mode & SPI_CS_HIGH ? 1 : 0);
 }
 
 static int wait_for_xfer(struct s3c64xx_spi_driver_data *sdd,
@@ -504,7 +505,7 @@ static inline void disable_cs(struct s3c64xx_spi_driver_data *sdd,
 	if (sdd->tgl_spi == spi)
 		sdd->tgl_spi = NULL;
 
-	cs->set_level(cs->line, spi->mode & SPI_CS_HIGH ? 0 : 1);
+	gpio_set_value(cs->line, spi->mode & SPI_CS_HIGH ? 0 : 1);
 }
 
 static void s3c64xx_spi_config(struct s3c64xx_spi_driver_data *sdd)
@@ -833,11 +834,21 @@ static int s3c64xx_spi_setup(struct spi_device *spi)
 	unsigned long flags;
 	int err = 0;
 
-	if (cs == NULL || cs->set_level == NULL) {
+	if (cs == NULL) {
 		dev_err(&spi->dev, "No CS for SPI(%d)\n", spi->chip_select);
 		return -ENODEV;
 	}
 
+	if (!spi_get_ctldata(spi)) {
+		err = gpio_request(cs->line, dev_name(&spi->dev));
+		if (err) {
+			dev_err(&spi->dev, "request for slave select gpio "
+					"line [%d] failed\n", cs->line);
+			return -EBUSY;
+		}
+		spi_set_ctldata(spi, cs);
+	}
+
 	sdd = spi_master_get_devdata(spi->master);
 	sci = sdd->cntrlr_info;
 
@@ -908,6 +919,15 @@ static int s3c64xx_spi_setup(struct spi_device *spi)
 	return err;
 }
 
+static void s3c64xx_spi_cleanup(struct spi_device *spi)
+{
+	struct s3c64xx_spi_csinfo *cs = spi_get_ctldata(spi);
+
+	if (cs)
+		gpio_free(cs->line);
+	spi_set_ctldata(spi, NULL);
+}
+
 static irqreturn_t s3c64xx_spi_irq(int irq, void *data)
 {
 	struct s3c64xx_spi_driver_data *sdd = data;
@@ -1049,6 +1069,7 @@ static int __init s3c64xx_spi_probe(struct platform_device *pdev)
 
 	master->bus_num = sdd->port_id;
 	master->setup = s3c64xx_spi_setup;
+	master->cleanup = s3c64xx_spi_cleanup;
 	master->prepare_transfer_hardware = s3c64xx_spi_prepare_transfer;
 	master->transfer_one_message = s3c64xx_spi_transfer_one_message;
 	master->unprepare_transfer_hardware = s3c64xx_spi_unprepare_transfer;