OMAP3: hwmod: add I2C hwmods for OMAP3430

Add hwmod structures for I2C controllers on OMAP3430.

This patch was developed in collaboration with Paul Walmsley
<paul@pwsan.com>.

OMAP3 fixes for correct IDLEST bit monitoring from
G, Manjunath Kondaiah <manjugk@ti.com>

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: G, Manjunath Kondaiah <manjugk@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

2 files changed, 236 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
index cb97ecf0a3f6..a8bed843079c 100644
--- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
@@ -18,6 +18,9 @@
 #include <plat/cpu.h>
 #include <plat/dma.h>
 #include <plat/serial.h>
+#include <plat/l4_3xxx.h>
+#include <plat/i2c.h>
+#include <plat/omap34xx.h>
 
 #include "omap_hwmod_common_data.h"
 
@@ -39,6 +42,9 @@ static struct omap_hwmod omap3xxx_l3_main_hwmod;
 static struct omap_hwmod omap3xxx_l4_core_hwmod;
 static struct omap_hwmod omap3xxx_l4_per_hwmod;
 static struct omap_hwmod omap3xxx_wd_timer2_hwmod;
+static struct omap_hwmod omap3xxx_i2c1_hwmod;
+static struct omap_hwmod omap3xxx_i2c2_hwmod;
+static struct omap_hwmod omap3xxx_i2c3_hwmod;
 
 /* L3 -> L4_CORE interface */
 static struct omap_hwmod_ocp_if omap3xxx_l3_main__l4_core = {
@@ -169,6 +175,84 @@ static struct omap_hwmod_ocp_if omap3_l4_per__uart4 = {
         .user           = OCP_USER_MPU | OCP_USER_SDMA,
 };
 
+/* I2C IP block address space length (in bytes) */
+#define OMAP2_I2C_AS_LEN                128
+
+/* L4 CORE -> I2C1 interface */
+static struct omap_hwmod_addr_space omap3xxx_i2c1_addr_space[] = {
+        {
+                .pa_start       = 0x48070000,
+                .pa_end         = 0x48070000 + OMAP2_I2C_AS_LEN - 1,
+                .flags          = ADDR_TYPE_RT,
+        },
+};
+
+static struct omap_hwmod_ocp_if omap3_l4_core__i2c1 = {
+        .master         = &omap3xxx_l4_core_hwmod,
+        .slave          = &omap3xxx_i2c1_hwmod,
+        .clk            = "i2c1_ick",
+        .addr           = omap3xxx_i2c1_addr_space,
+        .addr_cnt       = ARRAY_SIZE(omap3xxx_i2c1_addr_space),
+        .fw = {
+                .omap2 = {
+                        .l4_fw_region  = OMAP3_L4_CORE_FW_I2C1_REGION,
+                        .l4_prot_group = 7,
+                        .flags  = OMAP_FIREWALL_L4,
+                }
+        },
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* L4 CORE -> I2C2 interface */
+static struct omap_hwmod_addr_space omap3xxx_i2c2_addr_space[] = {
+        {
+                .pa_start       = 0x48072000,
+                .pa_end         = 0x48072000 + OMAP2_I2C_AS_LEN - 1,
+                .flags          = ADDR_TYPE_RT,
+        },
+};
+
+static struct omap_hwmod_ocp_if omap3_l4_core__i2c2 = {
+        .master         = &omap3xxx_l4_core_hwmod,
+        .slave          = &omap3xxx_i2c2_hwmod,
+        .clk            = "i2c2_ick",
+        .addr           = omap3xxx_i2c2_addr_space,
+        .addr_cnt       = ARRAY_SIZE(omap3xxx_i2c2_addr_space),
+        .fw = {
+                .omap2 = {
+                        .l4_fw_region  = OMAP3_L4_CORE_FW_I2C2_REGION,
+                        .l4_prot_group = 7,
+                        .flags = OMAP_FIREWALL_L4,
+                }
+        },
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* L4 CORE -> I2C3 interface */
+static struct omap_hwmod_addr_space omap3xxx_i2c3_addr_space[] = {
+        {
+                .pa_start       = 0x48060000,
+                .pa_end         = 0x48060000 + OMAP2_I2C_AS_LEN - 1,
+                .flags          = ADDR_TYPE_RT,
+        },
+};
+
+static struct omap_hwmod_ocp_if omap3_l4_core__i2c3 = {
+        .master         = &omap3xxx_l4_core_hwmod,
+        .slave          = &omap3xxx_i2c3_hwmod,
+        .clk            = "i2c3_ick",
+        .addr           = omap3xxx_i2c3_addr_space,
+        .addr_cnt       = ARRAY_SIZE(omap3xxx_i2c3_addr_space),
+        .fw = {
+                .omap2 = {
+                        .l4_fw_region  = OMAP3_L4_CORE_FW_I2C3_REGION,
+                        .l4_prot_group = 7,
+                        .flags = OMAP_FIREWALL_L4,
+                }
+        },
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
 /* Slave interfaces on the L4_CORE interconnect */
 static struct omap_hwmod_ocp_if *omap3xxx_l4_core_slaves[] = {
         &omap3xxx_l3_main__l4_core,
@@ -179,6 +263,9 @@ static struct omap_hwmod_ocp_if *omap3xxx_l4_core_masters[] = {
         &omap3xxx_l4_core__l4_wkup,
         &omap3_l4_core__uart1,
         &omap3_l4_core__uart2,
+        &omap3_l4_core__i2c1,
+        &omap3_l4_core__i2c2,
+        &omap3_l4_core__i2c3,
 };
 
 /* L4 CORE */
@@ -315,6 +402,18 @@ static struct omap_hwmod_class_sysconfig omap3xxx_wd_timer_sysc = {
         .sysc_fields    = &omap_hwmod_sysc_type1,
 };
 
+/* I2C common */
+static struct omap_hwmod_class_sysconfig i2c_sysc = {
+        .rev_offs       = 0x00,
+        .sysc_offs      = 0x20,
+        .syss_offs      = 0x10,
+        .sysc_flags     = (SYSC_HAS_CLOCKACTIVITY | SYSC_HAS_SIDLEMODE |
+                           SYSC_HAS_ENAWAKEUP | SYSC_HAS_SOFTRESET |
+                           SYSC_HAS_AUTOIDLE),
+        .idlemodes      = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
+        .sysc_fields    = &omap_hwmod_sysc_type1,
+};
+
 static struct omap_hwmod_class omap3xxx_wd_timer_hwmod_class = {
         .name = "wd_timer",
         .sysc = &omap3xxx_wd_timer_sysc,
@@ -509,6 +608,137 @@ static struct omap_hwmod omap3xxx_uart4_hwmod = {
         .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP3630ES1),
 };
 
+static struct omap_hwmod_class i2c_class = {
+        .name = "i2c",
+        .sysc = &i2c_sysc,
+};
+
+/* I2C1 */
+
+static struct omap_i2c_dev_attr i2c1_dev_attr = {
+        .fifo_depth     = 8, /* bytes */
+};
+
+static struct omap_hwmod_irq_info i2c1_mpu_irqs[] = {
+        { .irq = INT_24XX_I2C1_IRQ, },
+};
+
+static struct omap_hwmod_dma_info i2c1_sdma_reqs[] = {
+        { .name = "tx", .dma_req = OMAP24XX_DMA_I2C1_TX },
+        { .name = "rx", .dma_req = OMAP24XX_DMA_I2C1_RX },
+};
+
+static struct omap_hwmod_ocp_if *omap3xxx_i2c1_slaves[] = {
+        &omap3_l4_core__i2c1,
+};
+
+static struct omap_hwmod omap3xxx_i2c1_hwmod = {
+        .name           = "i2c1",
+        .mpu_irqs       = i2c1_mpu_irqs,
+        .mpu_irqs_cnt   = ARRAY_SIZE(i2c1_mpu_irqs),
+        .sdma_reqs      = i2c1_sdma_reqs,
+        .sdma_reqs_cnt  = ARRAY_SIZE(i2c1_sdma_reqs),
+        .main_clk       = "i2c1_fck",
+        .prcm           = {
+                .omap2 = {
+                        .module_offs = CORE_MOD,
+                        .prcm_reg_id = 1,
+                        .module_bit = OMAP3430_EN_I2C1_SHIFT,
+                        .idlest_reg_id = 1,
+                        .idlest_idle_bit = OMAP3430_ST_I2C1_SHIFT,
+                },
+        },
+        .slaves         = omap3xxx_i2c1_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap3xxx_i2c1_slaves),
+        .class          = &i2c_class,
+        .dev_attr       = &i2c1_dev_attr,
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+};
+
+/* I2C2 */
+
+static struct omap_i2c_dev_attr i2c2_dev_attr = {
+        .fifo_depth     = 8, /* bytes */
+};
+
+static struct omap_hwmod_irq_info i2c2_mpu_irqs[] = {
+        { .irq = INT_24XX_I2C2_IRQ, },
+};
+
+static struct omap_hwmod_dma_info i2c2_sdma_reqs[] = {
+        { .name = "tx", .dma_req = OMAP24XX_DMA_I2C2_TX },
+        { .name = "rx", .dma_req = OMAP24XX_DMA_I2C2_RX },
+};
+
+static struct omap_hwmod_ocp_if *omap3xxx_i2c2_slaves[] = {
+        &omap3_l4_core__i2c2,
+};
+
+static struct omap_hwmod omap3xxx_i2c2_hwmod = {
+        .name           = "i2c2",
+        .mpu_irqs       = i2c2_mpu_irqs,
+        .mpu_irqs_cnt   = ARRAY_SIZE(i2c2_mpu_irqs),
+        .sdma_reqs      = i2c2_sdma_reqs,
+        .sdma_reqs_cnt  = ARRAY_SIZE(i2c2_sdma_reqs),
+        .main_clk       = "i2c2_fck",
+        .prcm           = {
+                .omap2 = {
+                        .module_offs = CORE_MOD,
+                        .prcm_reg_id = 1,
+                        .module_bit = OMAP3430_EN_I2C2_SHIFT,
+                        .idlest_reg_id = 1,
+                        .idlest_idle_bit = OMAP3430_ST_I2C2_SHIFT,
+                },
+        },
+        .slaves         = omap3xxx_i2c2_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap3xxx_i2c2_slaves),
+        .class          = &i2c_class,
+        .dev_attr       = &i2c2_dev_attr,
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+};
+
+/* I2C3 */
+
+static struct omap_i2c_dev_attr i2c3_dev_attr = {
+        .fifo_depth     = 64, /* bytes */
+};
+
+static struct omap_hwmod_irq_info i2c3_mpu_irqs[] = {
+        { .irq = INT_34XX_I2C3_IRQ, },
+};
+
+static struct omap_hwmod_dma_info i2c3_sdma_reqs[] = {
+        { .name = "tx", .dma_req = OMAP34XX_DMA_I2C3_TX },
+        { .name = "rx", .dma_req = OMAP34XX_DMA_I2C3_RX },
+};
+
+static struct omap_hwmod_ocp_if *omap3xxx_i2c3_slaves[] = {
+        &omap3_l4_core__i2c3,
+};
+
+static struct omap_hwmod omap3xxx_i2c3_hwmod = {
+        .name           = "i2c3",
+        .mpu_irqs       = i2c3_mpu_irqs,
+        .mpu_irqs_cnt   = ARRAY_SIZE(i2c3_mpu_irqs),
+        .sdma_reqs      = i2c3_sdma_reqs,
+        .sdma_reqs_cnt  = ARRAY_SIZE(i2c3_sdma_reqs),
+        .main_clk       = "i2c3_fck",
+        .prcm           = {
+                .omap2 = {
+                        .module_offs = CORE_MOD,
+                        .prcm_reg_id = 1,
+                        .module_bit = OMAP3430_EN_I2C3_SHIFT,
+                        .idlest_reg_id = 1,
+                        .idlest_idle_bit = OMAP3430_ST_I2C3_SHIFT,
+                },
+        },
+        .slaves         = omap3xxx_i2c3_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap3xxx_i2c3_slaves),
+        .class          = &i2c_class,
+        .dev_attr       = &i2c3_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,
@@ -521,6 +751,9 @@ static __initdata struct omap_hwmod *omap3xxx_hwmods[] = {
         &omap3xxx_uart2_hwmod,
         &omap3xxx_uart3_hwmod,
         &omap3xxx_uart4_hwmod,
+        &omap3xxx_i2c1_hwmod,
+        &omap3xxx_i2c2_hwmod,
+        &omap3xxx_i2c3_hwmod,
         NULL,
 };
 
diff --git a/arch/arm/mach-omap2/prm-regbits-34xx.h b/arch/arm/mach-omap2/prm-regbits-34xx.h
index 9e63cb743a97..ec1a710db9ce 100644
--- a/arch/arm/mach-omap2/prm-regbits-34xx.h
+++ b/arch/arm/mach-omap2/prm-regbits-34xx.h
@@ -101,8 +101,11 @@
 #define OMAP3430_GRPSEL_MCSPI3_MASK                     (1 << 20)
 #define OMAP3430_GRPSEL_MCSPI2_MASK                     (1 << 19)
 #define OMAP3430_GRPSEL_MCSPI1_MASK                     (1 << 18)
+#define OMAP3430_GRPSEL_I2C3_SHIFT                      17
 #define OMAP3430_GRPSEL_I2C3_MASK                       (1 << 17)
+#define OMAP3430_GRPSEL_I2C2_SHIFT                      16
 #define OMAP3430_GRPSEL_I2C2_MASK                       (1 << 16)
+#define OMAP3430_GRPSEL_I2C1_SHIFT                      15
 #define OMAP3430_GRPSEL_I2C1_MASK                       (1 << 15)
 #define OMAP3430_GRPSEL_UART2_MASK                      (1 << 14)
 #define OMAP3430_GRPSEL_UART1_MASK                      (1 << 13)