ARM: imx: eukrea_mbimxsd25: add spi controler and spidev support

Signed-off-by: Eric Bénard <eric@eukrea.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

2 files changed, 43 insertions, 0 deletions

diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index 7561eca131b0..e102f8fd2c55 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -181,6 +181,7 @@ config MACH_EUKREA_MBIMXSD25_BASEBOARD
         bool "Eukrea MBIMXSD development board"
         select IMX_HAVE_PLATFORM_GPIO_KEYS
         select IMX_HAVE_PLATFORM_IMX_SSI
+        select IMX_HAVE_PLATFORM_SPI_IMX
         select LEDS_GPIO_REGISTER
         help
           This adds board specific devices that can be found on Eukrea's
diff --git a/arch/arm/mach-imx/eukrea_mbimxsd25-baseboard.c b/arch/arm/mach-imx/eukrea_mbimxsd25-baseboard.c
index 2cf603e11c4f..cafa1092d8aa 100644
--- a/arch/arm/mach-imx/eukrea_mbimxsd25-baseboard.c
+++ b/arch/arm/mach-imx/eukrea_mbimxsd25-baseboard.c
@@ -23,6 +23,7 @@
 #include <linux/leds.h>
 #include <linux/platform_device.h>
 #include <linux/input.h>
+#include <linux/spi/spi.h>
 #include <video/platform_lcd.h>
 
 #include <mach/hardware.h>
@@ -87,12 +88,22 @@ static iomux_v3_cfg_t eukrea_mbimxsd_pads[] = {
         /* CAN */
         MX25_PAD_GPIO_D__CAN2_RX,
         MX25_PAD_GPIO_C__CAN2_TX,
+        /* SPI1 */
+        MX25_PAD_CSPI1_MOSI__CSPI1_MOSI,
+        MX25_PAD_CSPI1_MISO__CSPI1_MISO,
+        MX25_PAD_CSPI1_SS0__GPIO_1_16,
+        MX25_PAD_CSPI1_SS1__GPIO_1_17,
+        MX25_PAD_CSPI1_SCLK__CSPI1_SCLK,
+        MX25_PAD_CSPI1_RDY__GPIO_2_22,
 };
 
 #define GPIO_LED1       83
 #define GPIO_SWITCH1    82
 #define GPIO_SD1CD      52
 #define GPIO_LCDPWR     26
+#define GPIO_SPI1_SS0   IMX_GPIO_NR(1, 16)
+#define GPIO_SPI1_SS1   IMX_GPIO_NR(1, 17)
+#define GPIO_SPI1_IRQ   IMX_GPIO_NR(2, 22)
 
 static struct imx_fb_videomode eukrea_mximxsd_modes[] = {
         {
@@ -228,6 +239,30 @@ static struct esdhc_platform_data sd1_pdata = {
         .wp_type = ESDHC_WP_NONE,
 };
 
+static struct spi_board_info eukrea_mbimxsd25_spi_board_info[] __initdata = {
+        {
+                .modalias = "spidev",
+                .max_speed_hz = 20000000,
+                .bus_num = 0,
+                .chip_select = 0,
+                .mode = SPI_MODE_0,
+        },
+        {
+                .modalias = "spidev",
+                .max_speed_hz = 20000000,
+                .bus_num = 0,
+                .chip_select = 1,
+                .mode = SPI_MODE_0,
+        },
+};
+
+static int eukrea_mbimxsd25_spi_cs[] = {GPIO_SPI1_SS0, GPIO_SPI1_SS1};
+
+static const struct spi_imx_master eukrea_mbimxsd25_spi0_data __initconst = {
+        .chipselect     = eukrea_mbimxsd25_spi_cs,
+        .num_chipselect = ARRAY_SIZE(eukrea_mbimxsd25_spi_cs),
+};
+
 /*
  * system init for baseboard usage. Will be called by cpuimx25 init.
  *
@@ -262,6 +297,13 @@ void __init eukrea_mbimxsd25_baseboard_init(void)
         i2c_register_board_info(0, eukrea_mbimxsd_i2c_devices,
                                 ARRAY_SIZE(eukrea_mbimxsd_i2c_devices));
 
+        gpio_request(GPIO_SPI1_IRQ, "SPI1_IRQ");
+        gpio_direction_input(GPIO_SPI1_IRQ);
+        gpio_free(GPIO_SPI1_IRQ);
+        imx25_add_spi_imx0(&eukrea_mbimxsd25_spi0_data);
+        spi_register_board_info(eukrea_mbimxsd25_spi_board_info,
+                ARRAY_SIZE(eukrea_mbimxsd25_spi_board_info));
+
         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
         gpio_led_register_device(-1, &eukrea_mbimxsd_led_info);
         imx_add_gpio_keys(&eukrea_mbimxsd_button_data);