[PATCH v2 2/5] OMAP3: hwmod: add I2C hwmods for OMAP3430

Rajendra Nayak
2010-09-17T14:37:18Z

Add hwmod structures for I2C controllers on OMAP3430.

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

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
---
arch/arm/mach-omap2/omap_hwmod_3xxx_data.c | 232 ++++++++++++++++++++++++++++
arch/arm/mach-omap2/prm-regbits-34xx.h | 3 +
arch/arm/plat-omap/include/plat/i2c.h | 16 ++
arch/arm/plat-omap/include/plat/l4_3xxx.h | 24 +++
4 files changed, 275 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/plat-omap/include/plat/l4_3xxx.h

diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
index 5d8eb58..b12920e 100644
--- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
@@ -17,6 +17,9 @@
#include <mach/irqs.h>
#include <plat/cpu.h>
#include <plat/dma.h>
+#include <plat/l4_3xxx.h>
+#include <plat/i2c.h>
+#include <plat/omap34xx.h>

#include "omap_hwmod_common_data.h"

@@ -36,6 +39,9 @@ static struct omap_hwmod omap3xxx_iva_hwmod;
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_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 = {
@@ -90,6 +96,85 @@ static struct omap_hwmod_ocp_if omap3xxx_l4_core__l4_wkup = {
.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,
@@ -98,6 +183,9 @@ static struct omap_hwmod_ocp_if *omap3xxx_l4_core_slaves[] = {
/* Master interfaces on the L4_CORE interconnect */
static struct omap_hwmod_ocp_if *omap3xxx_l4_core_masters[] = {
&omap3xxx_l4_core__l4_wkup,
+ &omap3_l4_core__i2c1,
+ &omap3_l4_core__i2c2,
+ &omap3_l4_core__i2c3,
};

/* L4 CORE */
@@ -197,6 +285,147 @@ static struct omap_hwmod omap3xxx_iva_hwmod = {
.omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP3430)
};

+
+/* 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 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 = {
+ .prcm_reg_id = 1,
+ .module_bit = OMAP3430_GRPSEL_I2C1_SHIFT,
+ .idlest_reg_id = 1,
+ .idlest_idle_bit = OMAP3430_GRPSEL_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 = {
+ .prcm_reg_id = 1,
+ .module_bit = OMAP3430_GRPSEL_I2C2_SHIFT,
+ .idlest_reg_id = 1,
+ .idlest_idle_bit = OMAP3430_GRPSEL_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 = {
+ .prcm_reg_id = 1,
+ .module_bit = OMAP3430_GRPSEL_I2C3_SHIFT,
+ .idlest_reg_id = 1,
+ .idlest_idle_bit = OMAP3430_GRPSEL_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,
@@ -204,6 +433,9 @@ static __initdata struct omap_hwmod *omap3xxx_hwmods[] = {
&omap3xxx_l4_wkup_hwmod,
&omap3xxx_mpu_hwmod,
&omap3xxx_iva_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 7fd6023..51c354e 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)
diff --git a/arch/arm/plat-omap/include/plat/i2c.h b/arch/arm/plat-omap/include/plat/i2c.h
index 87f6bf2..86d0199 100644
--- a/arch/arm/plat-omap/include/plat/i2c.h
+++ b/arch/arm/plat-omap/include/plat/i2c.h
@@ -18,6 +18,8 @@
* 02110-1301 USA
*
*/
+#ifndef __ASM_ARCH_I2C_H
+#define __ASM_ARCH_I2C_H

#include <linux/i2c.h>

@@ -34,5 +36,19 @@ static inline int omap_register_i2c_bus(int bus_id, u32 clkrate,
}
#endif

+/**
+ * i2c_dev_attr - OMAP I2C controller device attributes for omap_hwmod
+ * @fifo_depth: total controller FIFO size (in bytes)
+ * @flags: differences in hardware support capability
+ *
+ * @fifo_depth represents what exists on the hardware, not what is
+ * actually configured at runtime by the device driver.
+ */
+struct omap_i2c_dev_attr {
+ u8 fifo_depth;
+ u8 flags;
+};
+
void __init omap1_i2c_mux_pins(int bus_id);
void __init omap2_i2c_mux_pins(int bus_id);
+#endif
diff --git a/arch/arm/plat-omap/include/plat/l4_3xxx.h b/arch/arm/plat-omap/include/plat/l4_3xxx.h
new file mode 100644
index 0000000..5e19493
--- /dev/null
+++ b/arch/arm/plat-omap/include/plat/l4_3xxx.h
@@ -0,0 +1,24 @@
+/*
+ * arch/arm/plat-omap/include/mach/l4_3xxx.h - L4 firewall definitions
+ *
+ * Copyright (C) 2009 Nokia Corporation
+ * Paul Walmsley
+ *
+ * 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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+#ifndef __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_L4_3XXX_H
+#define __ARCH_ARM_PLAT_OMAP_INCLUDE_MACH_L4_3XXX_H
+
+/* L4 CORE */
+#define OMAP3_L4_CORE_FW_I2C1_REGION 21
+#define OMAP3_L4_CORE_FW_I2C1_TA_REGION 22
+#define OMAP3_L4_CORE_FW_I2C2_REGION 23
+#define OMAP3_L4_CORE_FW_I2C2_TA_REGION 24
+#define OMAP3_L4_CORE_FW_I2C3_REGION 73
+#define OMAP3_L4_CORE_FW_I2C3_TA_REGION 74
+
+#endif
--
1.7.0.4