Merge branches 'devel-hwspinlock' and 'devel-mcspi' into omap-for-linus

6 files changed, 774 insertions, 301 deletions

diff --git a/arch/arm/mach-omap2/devices.c b/arch/arm/mach-omap2/devices.c
index e0f0ef952bc..71f099b85e7 100644
--- a/arch/arm/mach-omap2/devices.c
+++ b/arch/arm/mach-omap2/devices.c
@@ -15,6 +15,7 @@
 #include <linux/io.h>
 #include <linux/clk.h>
 #include <linux/err.h>
+#include <linux/slab.h>
 
 #include <mach/hardware.h>
 #include <mach/irqs.h>
@@ -279,163 +280,55 @@ static inline void omap_init_audio(void) {}
 
 #include <plat/mcspi.h>
 
-#define OMAP2_MCSPI1_BASE               0x48098000
-#define OMAP2_MCSPI2_BASE               0x4809a000
-#define OMAP2_MCSPI3_BASE               0x480b8000
-#define OMAP2_MCSPI4_BASE               0x480ba000
-
-#define OMAP4_MCSPI1_BASE               0x48098100
-#define OMAP4_MCSPI2_BASE               0x4809a100
-#define OMAP4_MCSPI3_BASE               0x480b8100
-#define OMAP4_MCSPI4_BASE               0x480ba100
-
-static struct omap2_mcspi_platform_config omap2_mcspi1_config = {
-        .num_cs         = 4,
-};
-
-static struct resource omap2_mcspi1_resources[] = {
-        {
-                .start          = OMAP2_MCSPI1_BASE,
-                .end            = OMAP2_MCSPI1_BASE + 0xff,
-                .flags          = IORESOURCE_MEM,
-        },
-};
-
-static struct platform_device omap2_mcspi1 = {
-        .name           = "omap2_mcspi",
-        .id             = 1,
-        .num_resources  = ARRAY_SIZE(omap2_mcspi1_resources),
-        .resource       = omap2_mcspi1_resources,
-        .dev            = {
-                .platform_data = &omap2_mcspi1_config,
-        },
-};
-
-static struct omap2_mcspi_platform_config omap2_mcspi2_config = {
-        .num_cs         = 2,
-};
-
-static struct resource omap2_mcspi2_resources[] = {
-        {
-                .start          = OMAP2_MCSPI2_BASE,
-                .end            = OMAP2_MCSPI2_BASE + 0xff,
-                .flags          = IORESOURCE_MEM,
-        },
-};
-
-static struct platform_device omap2_mcspi2 = {
-        .name           = "omap2_mcspi",
-        .id             = 2,
-        .num_resources  = ARRAY_SIZE(omap2_mcspi2_resources),
-        .resource       = omap2_mcspi2_resources,
-        .dev            = {
-                .platform_data = &omap2_mcspi2_config,
-        },
-};
-
-#if defined(CONFIG_SOC_OMAP2430) || defined(CONFIG_ARCH_OMAP3) || \
-        defined(CONFIG_ARCH_OMAP4)
-static struct omap2_mcspi_platform_config omap2_mcspi3_config = {
-        .num_cs         = 2,
-};
-
-static struct resource omap2_mcspi3_resources[] = {
-        {
-        .start          = OMAP2_MCSPI3_BASE,
-        .end            = OMAP2_MCSPI3_BASE + 0xff,
-        .flags          = IORESOURCE_MEM,
-        },
-};
-
-static struct platform_device omap2_mcspi3 = {
-        .name           = "omap2_mcspi",
-        .id             = 3,
-        .num_resources  = ARRAY_SIZE(omap2_mcspi3_resources),
-        .resource       = omap2_mcspi3_resources,
-        .dev            = {
-                .platform_data = &omap2_mcspi3_config,
-        },
-};
-#endif
-
-#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
-static struct omap2_mcspi_platform_config omap2_mcspi4_config = {
-        .num_cs         = 1,
-};
-
-static struct resource omap2_mcspi4_resources[] = {
-        {
-                .start          = OMAP2_MCSPI4_BASE,
-                .end            = OMAP2_MCSPI4_BASE + 0xff,
-                .flags          = IORESOURCE_MEM,
-        },
-};
-
-static struct platform_device omap2_mcspi4 = {
-        .name           = "omap2_mcspi",
-        .id             = 4,
-        .num_resources  = ARRAY_SIZE(omap2_mcspi4_resources),
-        .resource       = omap2_mcspi4_resources,
-        .dev            = {
-                .platform_data = &omap2_mcspi4_config,
+struct omap_device_pm_latency omap_mcspi_latency[] = {
+        [0] = {
+                .deactivate_func = omap_device_idle_hwmods,
+                .activate_func   = omap_device_enable_hwmods,
+                .flags           = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
         },
 };
-#endif
 
-#ifdef CONFIG_ARCH_OMAP4
-static inline void omap4_mcspi_fixup(void)
+static int omap_mcspi_init(struct omap_hwmod *oh, void *unused)
 {
-        omap2_mcspi1_resources[0].start = OMAP4_MCSPI1_BASE;
-        omap2_mcspi1_resources[0].end   = OMAP4_MCSPI1_BASE + 0xff;
-        omap2_mcspi2_resources[0].start = OMAP4_MCSPI2_BASE;
-        omap2_mcspi2_resources[0].end   = OMAP4_MCSPI2_BASE + 0xff;
-        omap2_mcspi3_resources[0].start = OMAP4_MCSPI3_BASE;
-        omap2_mcspi3_resources[0].end   = OMAP4_MCSPI3_BASE + 0xff;
-        omap2_mcspi4_resources[0].start = OMAP4_MCSPI4_BASE;
-        omap2_mcspi4_resources[0].end   = OMAP4_MCSPI4_BASE + 0xff;
-}
-#else
-static inline void omap4_mcspi_fixup(void)
-{
-}
-#endif
+        struct omap_device *od;
+        char *name = "omap2_mcspi";
+        struct omap2_mcspi_platform_config *pdata;
+        static int spi_num;
+        struct omap2_mcspi_dev_attr *mcspi_attrib = oh->dev_attr;
+
+        pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
+        if (!pdata) {
+                pr_err("Memory allocation for McSPI device failed\n");
+                return -ENOMEM;
+        }
 
-#if defined(CONFIG_SOC_OMAP2430) || defined(CONFIG_ARCH_OMAP3) || \
-        defined(CONFIG_ARCH_OMAP4)
-static inline void omap2_mcspi3_init(void)
-{
-        platform_device_register(&omap2_mcspi3);
-}
-#else
-static inline void omap2_mcspi3_init(void)
-{
-}
-#endif
+        pdata->num_cs = mcspi_attrib->num_chipselect;
+        switch (oh->class->rev) {
+        case OMAP2_MCSPI_REV:
+        case OMAP3_MCSPI_REV:
+                        pdata->regs_offset = 0;
+                        break;
+        case OMAP4_MCSPI_REV:
+                        pdata->regs_offset = OMAP4_MCSPI_REG_OFFSET;
+                        break;
+        default:
+                        pr_err("Invalid McSPI Revision value\n");
+                        return -EINVAL;
+        }
 
-#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
-static inline void omap2_mcspi4_init(void)
-{
-        platform_device_register(&omap2_mcspi4);
-}
-#else
-static inline void omap2_mcspi4_init(void)
-{
+        spi_num++;
+        od = omap_device_build(name, spi_num, oh, pdata,
+                                sizeof(*pdata), omap_mcspi_latency,
+                                ARRAY_SIZE(omap_mcspi_latency), 0);
+        WARN(IS_ERR(od), "Cant build omap_device for %s:%s\n",
+                                name, oh->name);
+        kfree(pdata);
+        return 0;
 }
-#endif
 
 static void omap_init_mcspi(void)
 {
-        if (cpu_is_omap44xx())
-                omap4_mcspi_fixup();
-
-        platform_device_register(&omap2_mcspi1);
-        platform_device_register(&omap2_mcspi2);
-
-        if (cpu_is_omap2430() || cpu_is_omap343x() || cpu_is_omap44xx())
-                omap2_mcspi3_init();
-
-        if (cpu_is_omap343x() || cpu_is_omap44xx())
-                omap2_mcspi4_init();
+        omap_hwmod_for_each_by_class("mcspi", omap_mcspi_init, NULL);
 }
 
 #else
diff --git a/arch/arm/mach-omap2/omap_hwmod_2420_data.c b/arch/arm/mach-omap2/omap_hwmod_2420_data.c
index b85c630b64d..7fffd340c76 100644
--- a/arch/arm/mach-omap2/omap_hwmod_2420_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_2420_data.c
@@ -18,6 +18,7 @@
 #include <plat/serial.h>
 #include <plat/i2c.h>
 #include <plat/gpio.h>
+#include <plat/mcspi.h>
 
 #include "omap_hwmod_common_data.h"
 
@@ -44,6 +45,8 @@ static struct omap_hwmod omap2420_gpio2_hwmod;
 static struct omap_hwmod omap2420_gpio3_hwmod;
 static struct omap_hwmod omap2420_gpio4_hwmod;
 static struct omap_hwmod omap2420_dma_system_hwmod;
+static struct omap_hwmod omap2420_mcspi1_hwmod;
+static struct omap_hwmod omap2420_mcspi2_hwmod;
 
 /* L3 -> L4_CORE interface */
 static struct omap_hwmod_ocp_if omap2420_l3_main__l4_core = {
@@ -88,6 +91,42 @@ static struct omap_hwmod omap2420_uart3_hwmod;
 static struct omap_hwmod omap2420_i2c1_hwmod;
 static struct omap_hwmod omap2420_i2c2_hwmod;
 
+/* l4 core -> mcspi1 interface */
+static struct omap_hwmod_addr_space omap2420_mcspi1_addr_space[] = {
+        {
+                .pa_start       = 0x48098000,
+                .pa_end         = 0x480980ff,
+                .flags          = ADDR_TYPE_RT,
+        },
+};
+
+static struct omap_hwmod_ocp_if omap2420_l4_core__mcspi1 = {
+        .master         = &omap2420_l4_core_hwmod,
+        .slave          = &omap2420_mcspi1_hwmod,
+        .clk            = "mcspi1_ick",
+        .addr           = omap2420_mcspi1_addr_space,
+        .addr_cnt       = ARRAY_SIZE(omap2420_mcspi1_addr_space),
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* l4 core -> mcspi2 interface */
+static struct omap_hwmod_addr_space omap2420_mcspi2_addr_space[] = {
+        {
+                .pa_start       = 0x4809a000,
+                .pa_end         = 0x4809a0ff,
+                .flags          = ADDR_TYPE_RT,
+        },
+};
+
+static struct omap_hwmod_ocp_if omap2420_l4_core__mcspi2 = {
+        .master         = &omap2420_l4_core_hwmod,
+        .slave          = &omap2420_mcspi2_hwmod,
+        .clk            = "mcspi2_ick",
+        .addr           = omap2420_mcspi2_addr_space,
+        .addr_cnt       = ARRAY_SIZE(omap2420_mcspi2_addr_space),
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
 /* L4_CORE -> L4_WKUP interface */
 static struct omap_hwmod_ocp_if omap2420_l4_core__l4_wkup = {
         .master = &omap2420_l4_core_hwmod,
@@ -864,6 +903,119 @@ static struct omap_hwmod omap2420_dma_system_hwmod = {
         .flags          = HWMOD_NO_IDLEST,
 };
 
+/*
+ * 'mcspi' class
+ * multichannel serial port interface (mcspi) / master/slave synchronous serial
+ * bus
+ */
+
+static struct omap_hwmod_class_sysconfig omap2420_mcspi_sysc = {
+        .rev_offs       = 0x0000,
+        .sysc_offs      = 0x0010,
+        .syss_offs      = 0x0014,
+        .sysc_flags     = (SYSC_HAS_CLOCKACTIVITY | SYSC_HAS_SIDLEMODE |
+                                SYSC_HAS_ENAWAKEUP | SYSC_HAS_SOFTRESET |
+                                SYSC_HAS_AUTOIDLE | SYSS_HAS_RESET_STATUS),
+        .idlemodes      = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
+        .sysc_fields    = &omap_hwmod_sysc_type1,
+};
+
+static struct omap_hwmod_class omap2420_mcspi_class = {
+        .name = "mcspi",
+        .sysc = &omap2420_mcspi_sysc,
+        .rev = OMAP2_MCSPI_REV,
+};
+
+/* mcspi1 */
+static struct omap_hwmod_irq_info omap2420_mcspi1_mpu_irqs[] = {
+        { .irq = 65 },
+};
+
+static struct omap_hwmod_dma_info omap2420_mcspi1_sdma_reqs[] = {
+        { .name = "tx0", .dma_req = 35 }, /* DMA_SPI1_TX0 */
+        { .name = "rx0", .dma_req = 36 }, /* DMA_SPI1_RX0 */
+        { .name = "tx1", .dma_req = 37 }, /* DMA_SPI1_TX1 */
+        { .name = "rx1", .dma_req = 38 }, /* DMA_SPI1_RX1 */
+        { .name = "tx2", .dma_req = 39 }, /* DMA_SPI1_TX2 */
+        { .name = "rx2", .dma_req = 40 }, /* DMA_SPI1_RX2 */
+        { .name = "tx3", .dma_req = 41 }, /* DMA_SPI1_TX3 */
+        { .name = "rx3", .dma_req = 42 }, /* DMA_SPI1_RX3 */
+};
+
+static struct omap_hwmod_ocp_if *omap2420_mcspi1_slaves[] = {
+        &omap2420_l4_core__mcspi1,
+};
+
+static struct omap2_mcspi_dev_attr omap_mcspi1_dev_attr = {
+        .num_chipselect = 4,
+};
+
+static struct omap_hwmod omap2420_mcspi1_hwmod = {
+        .name           = "mcspi1_hwmod",
+        .mpu_irqs       = omap2420_mcspi1_mpu_irqs,
+        .mpu_irqs_cnt   = ARRAY_SIZE(omap2420_mcspi1_mpu_irqs),
+        .sdma_reqs      = omap2420_mcspi1_sdma_reqs,
+        .sdma_reqs_cnt  = ARRAY_SIZE(omap2420_mcspi1_sdma_reqs),
+        .main_clk       = "mcspi1_fck",
+        .prcm           = {
+                .omap2 = {
+                        .module_offs = CORE_MOD,
+                        .prcm_reg_id = 1,
+                        .module_bit = OMAP24XX_EN_MCSPI1_SHIFT,
+                        .idlest_reg_id = 1,
+                        .idlest_idle_bit = OMAP24XX_ST_MCSPI1_SHIFT,
+                },
+        },
+        .slaves         = omap2420_mcspi1_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap2420_mcspi1_slaves),
+        .class          = &omap2420_mcspi_class,
+        .dev_attr       = &omap_mcspi1_dev_attr,
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP2420),
+};
+
+/* mcspi2 */
+static struct omap_hwmod_irq_info omap2420_mcspi2_mpu_irqs[] = {
+        { .irq = 66 },
+};
+
+static struct omap_hwmod_dma_info omap2420_mcspi2_sdma_reqs[] = {
+        { .name = "tx0", .dma_req = 43 }, /* DMA_SPI2_TX0 */
+        { .name = "rx0", .dma_req = 44 }, /* DMA_SPI2_RX0 */
+        { .name = "tx1", .dma_req = 45 }, /* DMA_SPI2_TX1 */
+        { .name = "rx1", .dma_req = 46 }, /* DMA_SPI2_RX1 */
+};
+
+static struct omap_hwmod_ocp_if *omap2420_mcspi2_slaves[] = {
+        &omap2420_l4_core__mcspi2,
+};
+
+static struct omap2_mcspi_dev_attr omap_mcspi2_dev_attr = {
+        .num_chipselect = 2,
+};
+
+static struct omap_hwmod omap2420_mcspi2_hwmod = {
+        .name           = "mcspi2_hwmod",
+        .mpu_irqs       = omap2420_mcspi2_mpu_irqs,
+        .mpu_irqs_cnt   = ARRAY_SIZE(omap2420_mcspi2_mpu_irqs),
+        .sdma_reqs      = omap2420_mcspi2_sdma_reqs,
+        .sdma_reqs_cnt  = ARRAY_SIZE(omap2420_mcspi2_sdma_reqs),
+        .main_clk       = "mcspi2_fck",
+        .prcm           = {
+                .omap2 = {
+                        .module_offs = CORE_MOD,
+                        .prcm_reg_id = 1,
+                        .module_bit = OMAP24XX_EN_MCSPI2_SHIFT,
+                        .idlest_reg_id = 1,
+                        .idlest_idle_bit = OMAP24XX_ST_MCSPI2_SHIFT,
+                },
+        },
+        .slaves         = omap2420_mcspi2_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap2420_mcspi2_slaves),
+        .class          = &omap2420_mcspi_class,
+        .dev_attr       = &omap_mcspi2_dev_attr,
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP2420),
+};
+
 static __initdata struct omap_hwmod *omap2420_hwmods[] = {
         &omap2420_l3_main_hwmod,
         &omap2420_l4_core_hwmod,
@@ -885,6 +1037,10 @@ static __initdata struct omap_hwmod *omap2420_hwmods[] = {
 
         /* dma_system class*/
         &omap2420_dma_system_hwmod,
+
+        /* mcspi class */
+        &omap2420_mcspi1_hwmod,
+        &omap2420_mcspi2_hwmod,
         NULL,
 };
 
diff --git a/arch/arm/mach-omap2/omap_hwmod_2430_data.c b/arch/arm/mach-omap2/omap_hwmod_2430_data.c
index 8ecfbcde13b..60fe4aac1f5 100644
--- a/arch/arm/mach-omap2/omap_hwmod_2430_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_2430_data.c
@@ -18,6 +18,7 @@
 #include <plat/serial.h>
 #include <plat/i2c.h>
 #include <plat/gpio.h>
+#include <plat/mcspi.h>
 
 #include "omap_hwmod_common_data.h"
 
@@ -45,6 +46,9 @@ static struct omap_hwmod omap2430_gpio3_hwmod;
 static struct omap_hwmod omap2430_gpio4_hwmod;
 static struct omap_hwmod omap2430_gpio5_hwmod;
 static struct omap_hwmod omap2430_dma_system_hwmod;
+static struct omap_hwmod omap2430_mcspi1_hwmod;
+static struct omap_hwmod omap2430_mcspi2_hwmod;
+static struct omap_hwmod omap2430_mcspi3_hwmod;
 
 /* L3 -> L4_CORE interface */
 static struct omap_hwmod_ocp_if omap2430_l3_main__l4_core = {
@@ -223,6 +227,60 @@ static struct omap_hwmod_ocp_if *omap2430_l4_wkup_slaves[] = {
 static struct omap_hwmod_ocp_if *omap2430_l4_wkup_masters[] = {
 };
 
+/* l4 core -> mcspi1 interface */
+static struct omap_hwmod_addr_space omap2430_mcspi1_addr_space[] = {
+        {
+                .pa_start       = 0x48098000,
+                .pa_end         = 0x480980ff,
+                .flags          = ADDR_TYPE_RT,
+        },
+};
+
+static struct omap_hwmod_ocp_if omap2430_l4_core__mcspi1 = {
+        .master         = &omap2430_l4_core_hwmod,
+        .slave          = &omap2430_mcspi1_hwmod,
+        .clk            = "mcspi1_ick",
+        .addr           = omap2430_mcspi1_addr_space,
+        .addr_cnt       = ARRAY_SIZE(omap2430_mcspi1_addr_space),
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* l4 core -> mcspi2 interface */
+static struct omap_hwmod_addr_space omap2430_mcspi2_addr_space[] = {
+        {
+                .pa_start       = 0x4809a000,
+                .pa_end         = 0x4809a0ff,
+                .flags          = ADDR_TYPE_RT,
+        },
+};
+
+static struct omap_hwmod_ocp_if omap2430_l4_core__mcspi2 = {
+        .master         = &omap2430_l4_core_hwmod,
+        .slave          = &omap2430_mcspi2_hwmod,
+        .clk            = "mcspi2_ick",
+        .addr           = omap2430_mcspi2_addr_space,
+        .addr_cnt       = ARRAY_SIZE(omap2430_mcspi2_addr_space),
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* l4 core -> mcspi3 interface */
+static struct omap_hwmod_addr_space omap2430_mcspi3_addr_space[] = {
+        {
+                .pa_start       = 0x480b8000,
+                .pa_end         = 0x480b80ff,
+                .flags          = ADDR_TYPE_RT,
+        },
+};
+
+static struct omap_hwmod_ocp_if omap2430_l4_core__mcspi3 = {
+        .master         = &omap2430_l4_core_hwmod,
+        .slave          = &omap2430_mcspi3_hwmod,
+        .clk            = "mcspi3_ick",
+        .addr           = omap2430_mcspi3_addr_space,
+        .addr_cnt       = ARRAY_SIZE(omap2430_mcspi3_addr_space),
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
 /* L4 WKUP */
 static struct omap_hwmod omap2430_l4_wkup_hwmod = {
         .name           = "l4_wkup",
@@ -919,6 +977,162 @@ static struct omap_hwmod omap2430_dma_system_hwmod = {
         .flags          = HWMOD_NO_IDLEST,
 };
 
+/*
+ * 'mcspi' class
+ * multichannel serial port interface (mcspi) / master/slave synchronous serial
+ * bus
+ */
+
+static struct omap_hwmod_class_sysconfig omap2430_mcspi_sysc = {
+        .rev_offs       = 0x0000,
+        .sysc_offs      = 0x0010,
+        .syss_offs      = 0x0014,
+        .sysc_flags     = (SYSC_HAS_CLOCKACTIVITY | SYSC_HAS_SIDLEMODE |
+                                SYSC_HAS_ENAWAKEUP | SYSC_HAS_SOFTRESET |
+                                SYSC_HAS_AUTOIDLE | SYSS_HAS_RESET_STATUS),
+        .idlemodes      = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
+        .sysc_fields    = &omap_hwmod_sysc_type1,
+};
+
+static struct omap_hwmod_class omap2430_mcspi_class = {
+        .name = "mcspi",
+        .sysc = &omap2430_mcspi_sysc,
+        .rev = OMAP2_MCSPI_REV,
+};
+
+/* mcspi1 */
+static struct omap_hwmod_irq_info omap2430_mcspi1_mpu_irqs[] = {
+        { .irq = 65 },
+};
+
+static struct omap_hwmod_dma_info omap2430_mcspi1_sdma_reqs[] = {
+        { .name = "tx0", .dma_req = 35 }, /* DMA_SPI1_TX0 */
+        { .name = "rx0", .dma_req = 36 }, /* DMA_SPI1_RX0 */
+        { .name = "tx1", .dma_req = 37 }, /* DMA_SPI1_TX1 */
+        { .name = "rx1", .dma_req = 38 }, /* DMA_SPI1_RX1 */
+        { .name = "tx2", .dma_req = 39 }, /* DMA_SPI1_TX2 */
+        { .name = "rx2", .dma_req = 40 }, /* DMA_SPI1_RX2 */
+        { .name = "tx3", .dma_req = 41 }, /* DMA_SPI1_TX3 */
+        { .name = "rx3", .dma_req = 42 }, /* DMA_SPI1_RX3 */
+};
+
+static struct omap_hwmod_ocp_if *omap2430_mcspi1_slaves[] = {
+        &omap2430_l4_core__mcspi1,
+};
+
+static struct omap2_mcspi_dev_attr omap_mcspi1_dev_attr = {
+        .num_chipselect = 4,
+};
+
+static struct omap_hwmod omap2430_mcspi1_hwmod = {
+        .name           = "mcspi1_hwmod",
+        .mpu_irqs       = omap2430_mcspi1_mpu_irqs,
+        .mpu_irqs_cnt   = ARRAY_SIZE(omap2430_mcspi1_mpu_irqs),
+        .sdma_reqs      = omap2430_mcspi1_sdma_reqs,
+        .sdma_reqs_cnt  = ARRAY_SIZE(omap2430_mcspi1_sdma_reqs),
+        .main_clk       = "mcspi1_fck",
+        .prcm           = {
+                .omap2 = {
+                        .module_offs = CORE_MOD,
+                        .prcm_reg_id = 1,
+                        .module_bit = OMAP24XX_EN_MCSPI1_SHIFT,
+                        .idlest_reg_id = 1,
+                        .idlest_idle_bit = OMAP24XX_ST_MCSPI1_SHIFT,
+                },
+        },
+        .slaves         = omap2430_mcspi1_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap2430_mcspi1_slaves),
+        .class          = &omap2430_mcspi_class,
+        .dev_attr       = &omap_mcspi1_dev_attr,
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP2430),
+};
+
+/* mcspi2 */
+static struct omap_hwmod_irq_info omap2430_mcspi2_mpu_irqs[] = {
+        { .irq = 66 },
+};
+
+static struct omap_hwmod_dma_info omap2430_mcspi2_sdma_reqs[] = {
+        { .name = "tx0", .dma_req = 43 }, /* DMA_SPI2_TX0 */
+        { .name = "rx0", .dma_req = 44 }, /* DMA_SPI2_RX0 */
+        { .name = "tx1", .dma_req = 45 }, /* DMA_SPI2_TX1 */
+        { .name = "rx1", .dma_req = 46 }, /* DMA_SPI2_RX1 */
+};
+
+static struct omap_hwmod_ocp_if *omap2430_mcspi2_slaves[] = {
+        &omap2430_l4_core__mcspi2,
+};
+
+static struct omap2_mcspi_dev_attr omap_mcspi2_dev_attr = {
+        .num_chipselect = 2,
+};
+
+static struct omap_hwmod omap2430_mcspi2_hwmod = {
+        .name           = "mcspi2_hwmod",
+        .mpu_irqs       = omap2430_mcspi2_mpu_irqs,
+        .mpu_irqs_cnt   = ARRAY_SIZE(omap2430_mcspi2_mpu_irqs),
+        .sdma_reqs      = omap2430_mcspi2_sdma_reqs,
+        .sdma_reqs_cnt  = ARRAY_SIZE(omap2430_mcspi2_sdma_reqs),
+        .main_clk       = "mcspi2_fck",
+        .prcm           = {
+                .omap2 = {
+                        .module_offs = CORE_MOD,
+                        .prcm_reg_id = 1,
+                        .module_bit = OMAP24XX_EN_MCSPI2_SHIFT,
+                        .idlest_reg_id = 1,
+                        .idlest_idle_bit = OMAP24XX_ST_MCSPI2_SHIFT,
+                },
+        },
+        .slaves         = omap2430_mcspi2_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap2430_mcspi2_slaves),
+        .class          = &omap2430_mcspi_class,
+        .dev_attr       = &omap_mcspi2_dev_attr,
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP2430),
+};
+
+/* mcspi3 */
+static struct omap_hwmod_irq_info omap2430_mcspi3_mpu_irqs[] = {
+        { .irq = 91 },
+};
+
+static struct omap_hwmod_dma_info omap2430_mcspi3_sdma_reqs[] = {
+        { .name = "tx0", .dma_req = 15 }, /* DMA_SPI3_TX0 */
+        { .name = "rx0", .dma_req = 16 }, /* DMA_SPI3_RX0 */
+        { .name = "tx1", .dma_req = 23 }, /* DMA_SPI3_TX1 */
+        { .name = "rx1", .dma_req = 24 }, /* DMA_SPI3_RX1 */
+};
+
+static struct omap_hwmod_ocp_if *omap2430_mcspi3_slaves[] = {
+        &omap2430_l4_core__mcspi3,
+};
+
+static struct omap2_mcspi_dev_attr omap_mcspi3_dev_attr = {
+        .num_chipselect = 2,
+};
+
+static struct omap_hwmod omap2430_mcspi3_hwmod = {
+        .name           = "mcspi3_hwmod",
+        .mpu_irqs       = omap2430_mcspi3_mpu_irqs,
+        .mpu_irqs_cnt   = ARRAY_SIZE(omap2430_mcspi3_mpu_irqs),
+        .sdma_reqs      = omap2430_mcspi3_sdma_reqs,
+        .sdma_reqs_cnt  = ARRAY_SIZE(omap2430_mcspi3_sdma_reqs),
+        .main_clk       = "mcspi3_fck",
+        .prcm           = {
+                .omap2 = {
+                        .module_offs = CORE_MOD,
+                        .prcm_reg_id = 2,
+                        .module_bit = OMAP2430_EN_MCSPI3_SHIFT,
+                        .idlest_reg_id = 2,
+                        .idlest_idle_bit = OMAP2430_ST_MCSPI3_SHIFT,
+                },
+        },
+        .slaves         = omap2430_mcspi3_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap2430_mcspi3_slaves),
+        .class          = &omap2430_mcspi_class,
+        .dev_attr       = &omap_mcspi3_dev_attr,
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP2430),
+};
+
 static __initdata struct omap_hwmod *omap2430_hwmods[] = {
         &omap2430_l3_main_hwmod,
         &omap2430_l4_core_hwmod,
@@ -941,6 +1155,11 @@ static __initdata struct omap_hwmod *omap2430_hwmods[] = {
 
         /* dma_system class*/
         &omap2430_dma_system_hwmod,
+
+        /* mcspi class */
+        &omap2430_mcspi1_hwmod,
+        &omap2430_mcspi2_hwmod,
+        &omap2430_mcspi3_hwmod,
         NULL,
 };
 
diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
index 8d8181334f8..800eda4adb5 100644
--- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
@@ -22,6 +22,7 @@
 #include <plat/i2c.h>
 #include <plat/gpio.h>
 #include <plat/smartreflex.h>
+#include <plat/mcspi.h>
 
 #include "omap_hwmod_common_data.h"
 
@@ -55,6 +56,10 @@ static struct omap_hwmod omap3xxx_gpio5_hwmod;
 static struct omap_hwmod omap3xxx_gpio6_hwmod;
 static struct omap_hwmod omap34xx_sr1_hwmod;
 static struct omap_hwmod omap34xx_sr2_hwmod;
+static struct omap_hwmod omap34xx_mcspi1;
+static struct omap_hwmod omap34xx_mcspi2;
+static struct omap_hwmod omap34xx_mcspi3;
+static struct omap_hwmod omap34xx_mcspi4;
 
 static struct omap_hwmod omap3xxx_dma_system_hwmod;
 
@@ -1356,6 +1361,275 @@ static struct omap_hwmod omap36xx_sr2_hwmod = {
         .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP3630ES1),
 };
 
+/* l4 core -> mcspi1 interface */
+static struct omap_hwmod_addr_space omap34xx_mcspi1_addr_space[] = {
+        {
+                .pa_start       = 0x48098000,
+                .pa_end         = 0x480980ff,
+                .flags          = ADDR_TYPE_RT,
+        },
+};
+
+static struct omap_hwmod_ocp_if omap34xx_l4_core__mcspi1 = {
+        .master         = &omap3xxx_l4_core_hwmod,
+        .slave          = &omap34xx_mcspi1,
+        .clk            = "mcspi1_ick",
+        .addr           = omap34xx_mcspi1_addr_space,
+        .addr_cnt       = ARRAY_SIZE(omap34xx_mcspi1_addr_space),
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* l4 core -> mcspi2 interface */
+static struct omap_hwmod_addr_space omap34xx_mcspi2_addr_space[] = {
+        {
+                .pa_start       = 0x4809a000,
+                .pa_end         = 0x4809a0ff,
+                .flags          = ADDR_TYPE_RT,
+        },
+};
+
+static struct omap_hwmod_ocp_if omap34xx_l4_core__mcspi2 = {
+        .master         = &omap3xxx_l4_core_hwmod,
+        .slave          = &omap34xx_mcspi2,
+        .clk            = "mcspi2_ick",
+        .addr           = omap34xx_mcspi2_addr_space,
+        .addr_cnt       = ARRAY_SIZE(omap34xx_mcspi2_addr_space),
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* l4 core -> mcspi3 interface */
+static struct omap_hwmod_addr_space omap34xx_mcspi3_addr_space[] = {
+        {
+                .pa_start       = 0x480b8000,
+                .pa_end         = 0x480b80ff,
+                .flags          = ADDR_TYPE_RT,
+        },
+};
+
+static struct omap_hwmod_ocp_if omap34xx_l4_core__mcspi3 = {
+        .master         = &omap3xxx_l4_core_hwmod,
+        .slave          = &omap34xx_mcspi3,
+        .clk            = "mcspi3_ick",
+        .addr           = omap34xx_mcspi3_addr_space,
+        .addr_cnt       = ARRAY_SIZE(omap34xx_mcspi3_addr_space),
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* l4 core -> mcspi4 interface */
+static struct omap_hwmod_addr_space omap34xx_mcspi4_addr_space[] = {
+        {
+                .pa_start       = 0x480ba000,
+                .pa_end         = 0x480ba0ff,
+                .flags          = ADDR_TYPE_RT,
+        },
+};
+
+static struct omap_hwmod_ocp_if omap34xx_l4_core__mcspi4 = {
+        .master         = &omap3xxx_l4_core_hwmod,
+        .slave          = &omap34xx_mcspi4,
+        .clk            = "mcspi4_ick",
+        .addr           = omap34xx_mcspi4_addr_space,
+        .addr_cnt       = ARRAY_SIZE(omap34xx_mcspi4_addr_space),
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/*
+ * 'mcspi' class
+ * multichannel serial port interface (mcspi) / master/slave synchronous serial
+ * bus
+ */
+
+static struct omap_hwmod_class_sysconfig omap34xx_mcspi_sysc = {
+        .rev_offs       = 0x0000,
+        .sysc_offs      = 0x0010,
+        .syss_offs      = 0x0014,
+        .sysc_flags     = (SYSC_HAS_CLOCKACTIVITY | SYSC_HAS_SIDLEMODE |
+                                SYSC_HAS_ENAWAKEUP | SYSC_HAS_SOFTRESET |
+                                SYSC_HAS_AUTOIDLE | SYSS_HAS_RESET_STATUS),
+        .idlemodes      = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
+        .sysc_fields    = &omap_hwmod_sysc_type1,
+};
+
+static struct omap_hwmod_class omap34xx_mcspi_class = {
+        .name = "mcspi",
+        .sysc = &omap34xx_mcspi_sysc,
+        .rev = OMAP3_MCSPI_REV,
+};
+
+/* mcspi1 */
+static struct omap_hwmod_irq_info omap34xx_mcspi1_mpu_irqs[] = {
+        { .name = "irq", .irq = 65 },
+};
+
+static struct omap_hwmod_dma_info omap34xx_mcspi1_sdma_reqs[] = {
+        { .name = "tx0", .dma_req = 35 },
+        { .name = "rx0", .dma_req = 36 },
+        { .name = "tx1", .dma_req = 37 },
+        { .name = "rx1", .dma_req = 38 },
+        { .name = "tx2", .dma_req = 39 },
+        { .name = "rx2", .dma_req = 40 },
+        { .name = "tx3", .dma_req = 41 },
+        { .name = "rx3", .dma_req = 42 },
+};
+
+static struct omap_hwmod_ocp_if *omap34xx_mcspi1_slaves[] = {
+        &omap34xx_l4_core__mcspi1,
+};
+
+static struct omap2_mcspi_dev_attr omap_mcspi1_dev_attr = {
+        .num_chipselect = 4,
+};
+
+static struct omap_hwmod omap34xx_mcspi1 = {
+        .name           = "mcspi1",
+        .mpu_irqs       = omap34xx_mcspi1_mpu_irqs,
+        .mpu_irqs_cnt   = ARRAY_SIZE(omap34xx_mcspi1_mpu_irqs),
+        .sdma_reqs      = omap34xx_mcspi1_sdma_reqs,
+        .sdma_reqs_cnt  = ARRAY_SIZE(omap34xx_mcspi1_sdma_reqs),
+        .main_clk       = "mcspi1_fck",
+        .prcm           = {
+                .omap2 = {
+                        .module_offs = CORE_MOD,
+                        .prcm_reg_id = 1,
+                        .module_bit = OMAP3430_EN_MCSPI1_SHIFT,
+                        .idlest_reg_id = 1,
+                        .idlest_idle_bit = OMAP3430_ST_MCSPI1_SHIFT,
+                },
+        },
+        .slaves         = omap34xx_mcspi1_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap34xx_mcspi1_slaves),
+        .class          = &omap34xx_mcspi_class,
+        .dev_attr       = &omap_mcspi1_dev_attr,
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+};
+
+/* mcspi2 */
+static struct omap_hwmod_irq_info omap34xx_mcspi2_mpu_irqs[] = {
+        { .name = "irq", .irq = 66 },
+};
+
+static struct omap_hwmod_dma_info omap34xx_mcspi2_sdma_reqs[] = {
+        { .name = "tx0", .dma_req = 43 },
+        { .name = "rx0", .dma_req = 44 },
+        { .name = "tx1", .dma_req = 45 },
+        { .name = "rx1", .dma_req = 46 },
+};
+
+static struct omap_hwmod_ocp_if *omap34xx_mcspi2_slaves[] = {
+        &omap34xx_l4_core__mcspi2,
+};
+
+static struct omap2_mcspi_dev_attr omap_mcspi2_dev_attr = {
+        .num_chipselect = 2,
+};
+
+static struct omap_hwmod omap34xx_mcspi2 = {
+        .name           = "mcspi2",
+        .mpu_irqs       = omap34xx_mcspi2_mpu_irqs,
+        .mpu_irqs_cnt   = ARRAY_SIZE(omap34xx_mcspi2_mpu_irqs),
+        .sdma_reqs      = omap34xx_mcspi2_sdma_reqs,
+        .sdma_reqs_cnt  = ARRAY_SIZE(omap34xx_mcspi2_sdma_reqs),
+        .main_clk       = "mcspi2_fck",
+        .prcm           = {
+                .omap2 = {
+                        .module_offs = CORE_MOD,
+                        .prcm_reg_id = 1,
+                        .module_bit = OMAP3430_EN_MCSPI2_SHIFT,
+                        .idlest_reg_id = 1,
+                        .idlest_idle_bit = OMAP3430_ST_MCSPI2_SHIFT,
+                },
+        },
+        .slaves         = omap34xx_mcspi2_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap34xx_mcspi2_slaves),
+        .class          = &omap34xx_mcspi_class,
+        .dev_attr       = &omap_mcspi2_dev_attr,
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+};
+
+/* mcspi3 */
+static struct omap_hwmod_irq_info omap34xx_mcspi3_mpu_irqs[] = {
+        { .name = "irq", .irq = 91 }, /* 91 */
+};
+
+static struct omap_hwmod_dma_info omap34xx_mcspi3_sdma_reqs[] = {
+        { .name = "tx0", .dma_req = 15 },
+        { .name = "rx0", .dma_req = 16 },
+        { .name = "tx1", .dma_req = 23 },
+        { .name = "rx1", .dma_req = 24 },
+};
+
+static struct omap_hwmod_ocp_if *omap34xx_mcspi3_slaves[] = {
+        &omap34xx_l4_core__mcspi3,
+};
+
+static struct omap2_mcspi_dev_attr omap_mcspi3_dev_attr = {
+        .num_chipselect = 2,
+};
+
+static struct omap_hwmod omap34xx_mcspi3 = {
+        .name           = "mcspi3",
+        .mpu_irqs       = omap34xx_mcspi3_mpu_irqs,
+        .mpu_irqs_cnt   = ARRAY_SIZE(omap34xx_mcspi3_mpu_irqs),
+        .sdma_reqs      = omap34xx_mcspi3_sdma_reqs,
+        .sdma_reqs_cnt  = ARRAY_SIZE(omap34xx_mcspi3_sdma_reqs),
+        .main_clk       = "mcspi3_fck",
+        .prcm           = {
+                .omap2 = {
+                        .module_offs = CORE_MOD,
+                        .prcm_reg_id = 1,
+                        .module_bit = OMAP3430_EN_MCSPI3_SHIFT,
+                        .idlest_reg_id = 1,
+                        .idlest_idle_bit = OMAP3430_ST_MCSPI3_SHIFT,
+                },
+        },
+        .slaves         = omap34xx_mcspi3_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap34xx_mcspi3_slaves),
+        .class          = &omap34xx_mcspi_class,
+        .dev_attr       = &omap_mcspi3_dev_attr,
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+};
+
+/* SPI4 */
+static struct omap_hwmod_irq_info omap34xx_mcspi4_mpu_irqs[] = {
+        { .name = "irq", .irq = INT_34XX_SPI4_IRQ }, /* 48 */
+};
+
+static struct omap_hwmod_dma_info omap34xx_mcspi4_sdma_reqs[] = {
+        { .name = "tx0", .dma_req = 70 }, /* DMA_SPI4_TX0 */
+        { .name = "rx0", .dma_req = 71 }, /* DMA_SPI4_RX0 */
+};
+
+static struct omap_hwmod_ocp_if *omap34xx_mcspi4_slaves[] = {
+        &omap34xx_l4_core__mcspi4,
+};
+
+static struct omap2_mcspi_dev_attr omap_mcspi4_dev_attr = {
+        .num_chipselect = 1,
+};
+
+static struct omap_hwmod omap34xx_mcspi4 = {
+        .name           = "mcspi4",
+        .mpu_irqs       = omap34xx_mcspi4_mpu_irqs,
+        .mpu_irqs_cnt   = ARRAY_SIZE(omap34xx_mcspi4_mpu_irqs),
+        .sdma_reqs      = omap34xx_mcspi4_sdma_reqs,
+        .sdma_reqs_cnt  = ARRAY_SIZE(omap34xx_mcspi4_sdma_reqs),
+        .main_clk       = "mcspi4_fck",
+        .prcm           = {
+                .omap2 = {
+                        .module_offs = CORE_MOD,
+                        .prcm_reg_id = 1,
+                        .module_bit = OMAP3430_EN_MCSPI4_SHIFT,
+                        .idlest_reg_id = 1,
+                        .idlest_idle_bit = OMAP3430_ST_MCSPI4_SHIFT,
+                },
+        },
+        .slaves         = omap34xx_mcspi4_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap34xx_mcspi4_slaves),
+        .class          = &omap34xx_mcspi_class,
+        .dev_attr       = &omap_mcspi4_dev_attr,
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+};
+
 static __initdata struct omap_hwmod *omap3xxx_hwmods[] = {
         &omap3xxx_l3_main_hwmod,
         &omap3xxx_l4_core_hwmod,
@@ -1387,6 +1661,12 @@ static __initdata struct omap_hwmod *omap3xxx_hwmods[] = {
 
         /* dma_system class*/
         &omap3xxx_dma_system_hwmod,
+
+        /* mcspi class */
+        &omap34xx_mcspi1,
+        &omap34xx_mcspi2,
+        &omap34xx_mcspi3,
+        &omap34xx_mcspi4,
         NULL,
 };
 
diff --git a/arch/arm/plat-omap/include/plat/mcspi.h b/arch/arm/plat-omap/include/plat/mcspi.h
index 1254e4945b6..3d51b18131c 100644
--- a/arch/arm/plat-omap/include/plat/mcspi.h
+++ b/arch/arm/plat-omap/include/plat/mcspi.h
@@ -1,8 +1,19 @@
 #ifndef _OMAP2_MCSPI_H
 #define _OMAP2_MCSPI_H
 
+#define OMAP2_MCSPI_REV 0
+#define OMAP3_MCSPI_REV 1
+#define OMAP4_MCSPI_REV 2
+
+#define OMAP4_MCSPI_REG_OFFSET 0x100
+
 struct omap2_mcspi_platform_config {
         unsigned short  num_cs;
+        unsigned int regs_offset;
+};
+
+struct omap2_mcspi_dev_attr {
+        unsigned short num_chipselect;
 };
 
 struct omap2_mcspi_device_config {
diff --git a/drivers/spi/omap2_mcspi.c b/drivers/spi/omap2_mcspi.c
index f076cc5c6fb..36501adc125 100644
--- a/drivers/spi/omap2_mcspi.c
+++ b/drivers/spi/omap2_mcspi.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2005, 2006 Nokia Corporation
  * Author:      Samuel Ortiz <samuel.ortiz@nokia.com> and
- *              Juha Yrjölä <juha.yrjola@nokia.com>
+ *              Juha Yrj�l� <juha.yrjola@nokia.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -33,6 +33,7 @@
 #include <linux/clk.h>
 #include <linux/io.h>
 #include <linux/slab.h>
+#include <linux/pm_runtime.h>
 
 #include <linux/spi/spi.h>
 
@@ -46,7 +47,6 @@
 #define OMAP2_MCSPI_MAX_CTRL            4
 
 #define OMAP2_MCSPI_REVISION            0x00
-#define OMAP2_MCSPI_SYSCONFIG           0x10
 #define OMAP2_MCSPI_SYSSTATUS           0x14
 #define OMAP2_MCSPI_IRQSTATUS           0x18
 #define OMAP2_MCSPI_IRQENABLE           0x1c
@@ -63,13 +63,6 @@
 
 /* per-register bitmasks: */
 
-#define OMAP2_MCSPI_SYSCONFIG_SMARTIDLE BIT(4)
-#define OMAP2_MCSPI_SYSCONFIG_ENAWAKEUP BIT(2)
-#define OMAP2_MCSPI_SYSCONFIG_AUTOIDLE  BIT(0)
-#define OMAP2_MCSPI_SYSCONFIG_SOFTRESET BIT(1)
-
-#define OMAP2_MCSPI_SYSSTATUS_RESETDONE BIT(0)
-
 #define OMAP2_MCSPI_MODULCTRL_SINGLE    BIT(0)
 #define OMAP2_MCSPI_MODULCTRL_MS        BIT(2)
 #define OMAP2_MCSPI_MODULCTRL_STEST     BIT(3)
@@ -122,13 +115,12 @@ struct omap2_mcspi {
         spinlock_t              lock;
         struct list_head        msg_queue;
         struct spi_master       *master;
-        struct clk              *ick;
-        struct clk              *fck;
         /* Virtual base address of the controller */
         void __iomem            *base;
         unsigned long           phys;
         /* SPI1 has 4 channels, while SPI2 has 2 */
         struct omap2_mcspi_dma  *dma_channels;
+        struct  device          *dev;
 };
 
 struct omap2_mcspi_cs {
@@ -144,7 +136,6 @@ struct omap2_mcspi_cs {
  * corresponding registers are modified.
  */
 struct omap2_mcspi_regs {
-        u32 sysconfig;
         u32 modulctrl;
         u32 wakeupenable;
         struct list_head cs;
@@ -268,9 +259,6 @@ static void omap2_mcspi_restore_ctx(struct omap2_mcspi *mcspi)
         mcspi_write_reg(spi_cntrl, OMAP2_MCSPI_MODULCTRL,
                         omap2_mcspi_ctx[spi_cntrl->bus_num - 1].modulctrl);
 
-        mcspi_write_reg(spi_cntrl, OMAP2_MCSPI_SYSCONFIG,
-                        omap2_mcspi_ctx[spi_cntrl->bus_num - 1].sysconfig);
-
         mcspi_write_reg(spi_cntrl, OMAP2_MCSPI_WAKEUPENABLE,
                         omap2_mcspi_ctx[spi_cntrl->bus_num - 1].wakeupenable);
 
@@ -280,20 +268,12 @@ static void omap2_mcspi_restore_ctx(struct omap2_mcspi *mcspi)
 }
 static void omap2_mcspi_disable_clocks(struct omap2_mcspi *mcspi)
 {
-        clk_disable(mcspi->ick);
-        clk_disable(mcspi->fck);
+        pm_runtime_put_sync(mcspi->dev);
 }
 
 static int omap2_mcspi_enable_clocks(struct omap2_mcspi *mcspi)
 {
-        if (clk_enable(mcspi->ick))
-                return -ENODEV;
-        if (clk_enable(mcspi->fck))
-                return -ENODEV;
-
-        omap2_mcspi_restore_ctx(mcspi);
-
-        return 0;
+        return pm_runtime_get_sync(mcspi->dev);
 }
 
 static int mcspi_wait_for_reg_bit(void __iomem *reg, unsigned long bit)
@@ -819,8 +799,9 @@ static int omap2_mcspi_setup(struct spi_device *spi)
                         return ret;
         }
 
-        if (omap2_mcspi_enable_clocks(mcspi))
-                return -ENODEV;
+        ret = omap2_mcspi_enable_clocks(mcspi);
+        if (ret < 0)
+                return ret;
 
         ret = omap2_mcspi_setup_transfer(spi, NULL);
         omap2_mcspi_disable_clocks(mcspi);
@@ -863,10 +844,11 @@ static void omap2_mcspi_work(struct work_struct *work)
         struct omap2_mcspi      *mcspi;
 
         mcspi = container_of(work, struct omap2_mcspi, work);
-        spin_lock_irq(&mcspi->lock);
 
-        if (omap2_mcspi_enable_clocks(mcspi))
-                goto out;
+        if (omap2_mcspi_enable_clocks(mcspi) < 0)
+                return;
+
+        spin_lock_irq(&mcspi->lock);
 
         /* We only enable one channel at a time -- the one whose message is
          * at the head of the queue -- although this controller would gladly
@@ -979,10 +961,9 @@ static void omap2_mcspi_work(struct work_struct *work)
                 spin_lock_irq(&mcspi->lock);
         }
 
-        omap2_mcspi_disable_clocks(mcspi);
-
-out:
         spin_unlock_irq(&mcspi->lock);
+
+        omap2_mcspi_disable_clocks(mcspi);
 }
 
 static int omap2_mcspi_transfer(struct spi_device *spi, struct spi_message *m)
@@ -1058,25 +1039,15 @@ static int omap2_mcspi_transfer(struct spi_device *spi, struct spi_message *m)
         return 0;
 }
 
-static int __init omap2_mcspi_reset(struct omap2_mcspi *mcspi)
+static int __init omap2_mcspi_master_setup(struct omap2_mcspi *mcspi)
 {
         struct spi_master       *master = mcspi->master;
         u32                     tmp;
+        int ret = 0;
 
-        if (omap2_mcspi_enable_clocks(mcspi))
-                return -1;
-
-        mcspi_write_reg(master, OMAP2_MCSPI_SYSCONFIG,
-                        OMAP2_MCSPI_SYSCONFIG_SOFTRESET);
-        do {
-                tmp = mcspi_read_reg(master, OMAP2_MCSPI_SYSSTATUS);
-        } while (!(tmp & OMAP2_MCSPI_SYSSTATUS_RESETDONE));
-
-        tmp = OMAP2_MCSPI_SYSCONFIG_AUTOIDLE |
-                OMAP2_MCSPI_SYSCONFIG_ENAWAKEUP |
-                OMAP2_MCSPI_SYSCONFIG_SMARTIDLE;
-        mcspi_write_reg(master, OMAP2_MCSPI_SYSCONFIG, tmp);
-        omap2_mcspi_ctx[master->bus_num - 1].sysconfig = tmp;
+        ret = omap2_mcspi_enable_clocks(mcspi);
+        if (ret < 0)
+                return ret;
 
         tmp = OMAP2_MCSPI_WAKEUPENABLE_WKEN;
         mcspi_write_reg(master, OMAP2_MCSPI_WAKEUPENABLE, tmp);
@@ -1087,91 +1058,26 @@ static int __init omap2_mcspi_reset(struct omap2_mcspi *mcspi)
         return 0;
 }
 
-static u8 __initdata spi1_rxdma_id [] = {
-        OMAP24XX_DMA_SPI1_RX0,
-        OMAP24XX_DMA_SPI1_RX1,
-        OMAP24XX_DMA_SPI1_RX2,
-        OMAP24XX_DMA_SPI1_RX3,
-};
-
-static u8 __initdata spi1_txdma_id [] = {
-        OMAP24XX_DMA_SPI1_TX0,
-        OMAP24XX_DMA_SPI1_TX1,
-        OMAP24XX_DMA_SPI1_TX2,
-        OMAP24XX_DMA_SPI1_TX3,
-};
-
-static u8 __initdata spi2_rxdma_id[] = {
-        OMAP24XX_DMA_SPI2_RX0,
-        OMAP24XX_DMA_SPI2_RX1,
-};
-
-static u8 __initdata spi2_txdma_id[] = {
-        OMAP24XX_DMA_SPI2_TX0,
-        OMAP24XX_DMA_SPI2_TX1,
-};
-
-#if defined(CONFIG_SOC_OMAP2430) || defined(CONFIG_ARCH_OMAP3) \
-        || defined(CONFIG_ARCH_OMAP4)
-static u8 __initdata spi3_rxdma_id[] = {
-        OMAP24XX_DMA_SPI3_RX0,
-        OMAP24XX_DMA_SPI3_RX1,
-};
+static int omap_mcspi_runtime_resume(struct device *dev)
+{
+        struct omap2_mcspi      *mcspi;
+        struct spi_master       *master;
 
-static u8 __initdata spi3_txdma_id[] = {
-        OMAP24XX_DMA_SPI3_TX0,
-        OMAP24XX_DMA_SPI3_TX1,
-};
-#endif
+        master = dev_get_drvdata(dev);
+        mcspi = spi_master_get_devdata(master);
+        omap2_mcspi_restore_ctx(mcspi);
 
-#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
-static u8 __initdata spi4_rxdma_id[] = {
-        OMAP34XX_DMA_SPI4_RX0,
-};
+        return 0;
+}
 
-static u8 __initdata spi4_txdma_id[] = {
-        OMAP34XX_DMA_SPI4_TX0,
-};
-#endif
 
 static int __init omap2_mcspi_probe(struct platform_device *pdev)
 {
         struct spi_master       *master;
+        struct omap2_mcspi_platform_config *pdata = pdev->dev.platform_data;
         struct omap2_mcspi      *mcspi;
         struct resource         *r;
         int                     status = 0, i;
-        const u8                *rxdma_id, *txdma_id;
-        unsigned                num_chipselect;
-
-        switch (pdev->id) {
-        case 1:
-                rxdma_id = spi1_rxdma_id;
-                txdma_id = spi1_txdma_id;
-                num_chipselect = 4;
-                break;
-        case 2:
-                rxdma_id = spi2_rxdma_id;
-                txdma_id = spi2_txdma_id;
-                num_chipselect = 2;
-                break;
-#if defined(CONFIG_SOC_OMAP2430) || defined(CONFIG_ARCH_OMAP3) \
-        || defined(CONFIG_ARCH_OMAP4)
-        case 3:
-                rxdma_id = spi3_rxdma_id;
-                txdma_id = spi3_txdma_id;
-                num_chipselect = 2;
-                break;
-#endif
-#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
-        case 4:
-                rxdma_id = spi4_rxdma_id;
-                txdma_id = spi4_txdma_id;
-                num_chipselect = 1;
-                break;
-#endif
-        default:
-                return -EINVAL;
-        }
 
         master = spi_alloc_master(&pdev->dev, sizeof *mcspi);
         if (master == NULL) {
@@ -1188,7 +1094,7 @@ static int __init omap2_mcspi_probe(struct platform_device *pdev)
         master->setup = omap2_mcspi_setup;
         master->transfer = omap2_mcspi_transfer;
         master->cleanup = omap2_mcspi_cleanup;
-        master->num_chipselect = num_chipselect;
+        master->num_chipselect = pdata->num_cs;
 
         dev_set_drvdata(&pdev->dev, master);
 
@@ -1206,49 +1112,62 @@ static int __init omap2_mcspi_probe(struct platform_device *pdev)
                 goto err1;
         }
 
+        r->start += pdata->regs_offset;
+        r->end += pdata->regs_offset;
         mcspi->phys = r->start;
         mcspi->base = ioremap(r->start, r->end - r->start + 1);
         if (!mcspi->base) {
                 dev_dbg(&pdev->dev, "can't ioremap MCSPI\n");
                 status = -ENOMEM;
-                goto err1aa;
+                goto err2;
         }
 
+        mcspi->dev = &pdev->dev;
         INIT_WORK(&mcspi->work, omap2_mcspi_work);
 
         spin_lock_init(&mcspi->lock);
         INIT_LIST_HEAD(&mcspi->msg_queue);
         INIT_LIST_HEAD(&omap2_mcspi_ctx[master->bus_num - 1].cs);
 
-        mcspi->ick = clk_get(&pdev->dev, "ick");
-        if (IS_ERR(mcspi->ick)) {
-                dev_dbg(&pdev->dev, "can't get mcspi_ick\n");
-                status = PTR_ERR(mcspi->ick);
-                goto err1a;
-        }
-        mcspi->fck = clk_get(&pdev->dev, "fck");
-        if (IS_ERR(mcspi->fck)) {
-                dev_dbg(&pdev->dev, "can't get mcspi_fck\n");
-                status = PTR_ERR(mcspi->fck);
-                goto err2;
-        }
-
         mcspi->dma_channels = kcalloc(master->num_chipselect,
                         sizeof(struct omap2_mcspi_dma),
                         GFP_KERNEL);
 
         if (mcspi->dma_channels == NULL)
-                goto err3;
+                goto err2;
+
+        for (i = 0; i < master->num_chipselect; i++) {
+                char dma_ch_name[14];
+                struct resource *dma_res;
+
+                sprintf(dma_ch_name, "rx%d", i);
+                dma_res = platform_get_resource_byname(pdev, IORESOURCE_DMA,
+                                                        dma_ch_name);
+                if (!dma_res) {
+                        dev_dbg(&pdev->dev, "cannot get DMA RX channel\n");
+                        status = -ENODEV;
+                        break;
+                }
 
-        for (i = 0; i < num_chipselect; i++) {
                 mcspi->dma_channels[i].dma_rx_channel = -1;
-                mcspi->dma_channels[i].dma_rx_sync_dev = rxdma_id[i];
+                mcspi->dma_channels[i].dma_rx_sync_dev = dma_res->start;
+                sprintf(dma_ch_name, "tx%d", i);
+                dma_res = platform_get_resource_byname(pdev, IORESOURCE_DMA,
+                                                        dma_ch_name);
+                if (!dma_res) {
+                        dev_dbg(&pdev->dev, "cannot get DMA TX channel\n");
+                        status = -ENODEV;
+                        break;
+                }
+
                 mcspi->dma_channels[i].dma_tx_channel = -1;
-                mcspi->dma_channels[i].dma_tx_sync_dev = txdma_id[i];
+                mcspi->dma_channels[i].dma_tx_sync_dev = dma_res->start;
         }
 
-        if (omap2_mcspi_reset(mcspi) < 0)
-                goto err4;
+        pm_runtime_enable(&pdev->dev);
+
+        if (status || omap2_mcspi_master_setup(mcspi) < 0)
+                goto err3;
 
         status = spi_register_master(master);
         if (status < 0)
@@ -1257,17 +1176,13 @@ static int __init omap2_mcspi_probe(struct platform_device *pdev)
         return status;
 
 err4:
-        kfree(mcspi->dma_channels);
+        spi_master_put(master);
 err3:
-        clk_put(mcspi->fck);
+        kfree(mcspi->dma_channels);
 err2:
-        clk_put(mcspi->ick);
-err1a:
-        iounmap(mcspi->base);
-err1aa:
         release_mem_region(r->start, (r->end - r->start) + 1);
+        iounmap(mcspi->base);
 err1:
-        spi_master_put(master);
         return status;
 }
 
@@ -1283,9 +1198,7 @@ static int __exit omap2_mcspi_remove(struct platform_device *pdev)
         mcspi = spi_master_get_devdata(master);
         dma_channels = mcspi->dma_channels;
 
-        clk_put(mcspi->fck);
-        clk_put(mcspi->ick);
-
+        omap2_mcspi_disable_clocks(mcspi);
         r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
         release_mem_region(r->start, (r->end - r->start) + 1);
 
@@ -1336,6 +1249,7 @@ static int omap2_mcspi_resume(struct device *dev)
 
 static const struct dev_pm_ops omap2_mcspi_pm_ops = {
         .resume = omap2_mcspi_resume,
+        .runtime_resume = omap_mcspi_runtime_resume,
 };
 
 static struct platform_driver omap2_mcspi_driver = {