spi: ep93xx: Convert to use CS GPIO descriptors

This converts the EP93xx SPI master driver to use GPIO
descriptors for chip select handling.

EP93xx was using platform data to pass in GPIO lines,
by converting all board files to use GPIO descriptor
tables the core will look up the GPIO lines from the
SPI device in the same manner as for device tree.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

4 files changed, 42 insertions, 22 deletions

diff --git a/arch/arm/mach-ep93xx/edb93xx.c b/arch/arm/mach-ep93xx/edb93xx.c
index 8e89ec8b6f0f..34e18e9556d9 100644
--- a/arch/arm/mach-ep93xx/edb93xx.c
+++ b/arch/arm/mach-ep93xx/edb93xx.c
@@ -29,6 +29,7 @@
 #include <linux/platform_device.h>
 #include <linux/i2c.h>
 #include <linux/spi/spi.h>
+#include <linux/gpio/machine.h>
 
 #include <sound/cs4271.h>
 
@@ -105,13 +106,16 @@ static struct spi_board_info edb93xx_spi_board_info[] __initdata = {
 	},
 };
 
-static int edb93xx_spi_chipselects[] __initdata = {
-	EP93XX_GPIO_LINE_EGPIO6,
+static struct gpiod_lookup_table edb93xx_spi_cs_gpio_table = {
+	.dev_id = "ep93xx-spi.0",
+	.table = {
+		GPIO_LOOKUP("A", 6, "cs", GPIO_ACTIVE_LOW),
+		{ },
+	},
 };
 
 static struct ep93xx_spi_info edb93xx_spi_info __initdata = {
-	.chipselect	= edb93xx_spi_chipselects,
-	.num_chipselect	= ARRAY_SIZE(edb93xx_spi_chipselects),
+	/* Intentionally left blank */
 };
 
 static void __init edb93xx_register_spi(void)
@@ -123,6 +127,7 @@ static void __init edb93xx_register_spi(void)
 	else if (machine_is_edb9315a())
 		edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO14;
 
+	gpiod_add_lookup_table(&edb93xx_spi_cs_gpio_table);
 	ep93xx_register_spi(&edb93xx_spi_info, edb93xx_spi_board_info,
 			    ARRAY_SIZE(edb93xx_spi_board_info));
 }
diff --git a/arch/arm/mach-ep93xx/simone.c b/arch/arm/mach-ep93xx/simone.c
index 80ccb984d521..f0f38c0dba52 100644
--- a/arch/arm/mach-ep93xx/simone.c
+++ b/arch/arm/mach-ep93xx/simone.c
@@ -77,13 +77,15 @@ static struct spi_board_info simone_spi_devices[] __initdata = {
  * low between multi-message command blocks. From v1.4, it uses a GPIO instead.
  * v1.3 parts will still work, since the signal on SFRMOUT is automatic.
  */
-static int simone_spi_chipselects[] __initdata = {
-	EP93XX_GPIO_LINE_EGPIO1,
+static struct gpiod_lookup_table simone_spi_cs_gpio_table = {
+	.dev_id = "ep93xx-spi.0",
+	.table = {
+		GPIO_LOOKUP("A", 1, "cs", GPIO_ACTIVE_LOW),
+		{ },
+	},
 };
 
 static struct ep93xx_spi_info simone_spi_info __initdata = {
-	.chipselect	= simone_spi_chipselects,
-	.num_chipselect	= ARRAY_SIZE(simone_spi_chipselects),
 	.use_dma = 1,
 };
 
@@ -113,6 +115,7 @@ static void __init simone_init_machine(void)
 	ep93xx_register_i2c(simone_i2c_board_info,
 			    ARRAY_SIZE(simone_i2c_board_info));
 	gpiod_add_lookup_table(&simone_mmc_spi_gpio_table);
+	gpiod_add_lookup_table(&simone_spi_cs_gpio_table);
 	ep93xx_register_spi(&simone_spi_info, simone_spi_devices,
 			    ARRAY_SIZE(simone_spi_devices));
 	simone_register_audio();
diff --git a/arch/arm/mach-ep93xx/ts72xx.c b/arch/arm/mach-ep93xx/ts72xx.c
index 85b74ac943f0..a3a20c83c6b8 100644
--- a/arch/arm/mach-ep93xx/ts72xx.c
+++ b/arch/arm/mach-ep93xx/ts72xx.c
@@ -22,6 +22,7 @@
 #include <linux/spi/mmc_spi.h>
 #include <linux/mmc/host.h>
 #include <linux/platform_data/spi-ep93xx.h>
+#include <linux/gpio/machine.h>
 
 #include <mach/gpio-ep93xx.h>
 #include <mach/hardware.h>
@@ -269,13 +270,15 @@ static struct spi_board_info bk3_spi_board_info[] __initdata = {
  * The all work is performed automatically by !SPI_FRAME (SFRM1) and
  * goes through CPLD
  */
-static int bk3_spi_chipselects[] __initdata = {
-	EP93XX_GPIO_LINE_F(3),
+static struct gpiod_lookup_table bk3_spi_cs_gpio_table = {
+	.dev_id = "ep93xx-spi.0",
+	.table = {
+		GPIO_LOOKUP("F", 3, "cs", GPIO_ACTIVE_LOW),
+		{ },
+	},
 };
 
 static struct ep93xx_spi_info bk3_spi_master __initdata = {
-	.chipselect	= bk3_spi_chipselects,
-	.num_chipselect = ARRAY_SIZE(bk3_spi_chipselects),
 	.use_dma	= 1,
 };
 
@@ -316,13 +319,17 @@ static struct spi_board_info ts72xx_spi_devices[] __initdata = {
 	},
 };
 
-static int ts72xx_spi_chipselects[] __initdata = {
-	EP93XX_GPIO_LINE_F(2),		/* DIO_17 */
+static struct gpiod_lookup_table ts72xx_spi_cs_gpio_table = {
+	.dev_id = "ep93xx-spi.0",
+	.table = {
+		/* DIO_17 */
+		GPIO_LOOKUP("F", 2, "cs", GPIO_ACTIVE_LOW),
+		{ },
+	},
 };
 
 static struct ep93xx_spi_info ts72xx_spi_info __initdata = {
-	.chipselect	= ts72xx_spi_chipselects,
-	.num_chipselect	= ARRAY_SIZE(ts72xx_spi_chipselects),
+	/* Intentionally left blank */
 };
 
 static void __init ts72xx_init_machine(void)
@@ -339,6 +346,7 @@ static void __init ts72xx_init_machine(void)
 	if (board_is_ts7300())
 		platform_device_register(&ts73xx_fpga_device);
 #endif
+	gpiod_add_lookup_table(&ts72xx_spi_cs_gpio_table);
 	ep93xx_register_spi(&ts72xx_spi_info, ts72xx_spi_devices,
 			    ARRAY_SIZE(ts72xx_spi_devices));
 }
@@ -398,6 +406,7 @@ static void __init bk3_init_machine(void)
 
 	ep93xx_register_eth(&ts72xx_eth_data, 1);
 
+	gpiod_add_lookup_table(&bk3_spi_cs_gpio_table);
 	ep93xx_register_spi(&bk3_spi_master, bk3_spi_board_info,
 			    ARRAY_SIZE(bk3_spi_board_info));
 
diff --git a/arch/arm/mach-ep93xx/vision_ep9307.c b/arch/arm/mach-ep93xx/vision_ep9307.c
index 767ee64628dc..f95a644769e4 100644
--- a/arch/arm/mach-ep93xx/vision_ep9307.c
+++ b/arch/arm/mach-ep93xx/vision_ep9307.c
@@ -245,15 +245,17 @@ static struct spi_board_info vision_spi_board_info[] __initdata = {
 	},
 };
 
-static int vision_spi_chipselects[] __initdata = {
-	EP93XX_GPIO_LINE_EGPIO6,
-	EP93XX_GPIO_LINE_EGPIO7,
-	EP93XX_GPIO_LINE_G(2),
+static struct gpiod_lookup_table vision_spi_cs_gpio_table = {
+	.dev_id = "ep93xx-spi.0",
+	.table = {
+		GPIO_LOOKUP_IDX("A", 6, "cs", 0, GPIO_ACTIVE_LOW),
+		GPIO_LOOKUP_IDX("A", 7, "cs", 1, GPIO_ACTIVE_LOW),
+		GPIO_LOOKUP_IDX("G", 2, "cs", 2, GPIO_ACTIVE_LOW),
+		{ },
+	},
 };
 
 static struct ep93xx_spi_info vision_spi_master __initdata = {
-	.chipselect	= vision_spi_chipselects,
-	.num_chipselect	= ARRAY_SIZE(vision_spi_chipselects),
 	.use_dma	= 1,
 };
 
@@ -295,6 +297,7 @@ static void __init vision_init_machine(void)
 	ep93xx_register_i2c(vision_i2c_info,
 				ARRAY_SIZE(vision_i2c_info));
 	gpiod_add_lookup_table(&vision_spi_mmc_gpio_table);
+	gpiod_add_lookup_table(&vision_spi_cs_gpio_table);
 	ep93xx_register_spi(&vision_spi_master, vision_spi_board_info,
 				ARRAY_SIZE(vision_spi_board_info));
 	vision_register_i2s();