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Merge branch 'pm-hwmod-i2c' of ssh://master.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into omap-for-linus

This commit is contained in:
Tony Lindgren 2010-11-30 14:45:49 -08:00
parent 9c7bc451e4 27b1fec2ca
commit 55a4e78952
11 changed files with 886 additions and 126 deletions
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4
arch/arm/mach-omap2/cm-regbits-24xx.h
View File

@ -126,8 +126,12 @@
#define OMAP24XX_ST_HDQ_MASK (1 << 23)
#define OMAP2420_ST_I2C2_SHIFT 20
#define OMAP2420_ST_I2C2_MASK (1 << 20)
#define OMAP2430_ST_I2CHS1_SHIFT 19
#define OMAP2430_ST_I2CHS1_MASK (1 << 19)
#define OMAP2420_ST_I2C1_SHIFT 19
#define OMAP2420_ST_I2C1_MASK (1 << 19)
#define OMAP2430_ST_I2CHS2_SHIFT 20
#define OMAP2430_ST_I2CHS2_MASK (1 << 20)
#define OMAP24XX_ST_MCBSP2_SHIFT 16
#define OMAP24XX_ST_MCBSP2_MASK (1 << 16)
#define OMAP24XX_ST_MCBSP1_SHIFT 15

145
arch/arm/mach-omap2/omap_hwmod_2420_data.c
View File

@ -16,11 +16,13 @@
#include <plat/cpu.h>
#include <plat/dma.h>
#include <plat/serial.h>
#include <plat/i2c.h>
#include <plat/omap24xx.h>
#include "omap_hwmod_common_data.h"
#include "prm-regbits-24xx.h"
#include "cm-regbits-24xx.h"
#include "prm-regbits-24xx.h"
/*
* OMAP2420 hardware module integration data
@ -77,6 +79,8 @@ static struct omap_hwmod omap2420_l4_wkup_hwmod;
static struct omap_hwmod omap2420_uart1_hwmod;
static struct omap_hwmod omap2420_uart2_hwmod;
static struct omap_hwmod omap2420_uart3_hwmod;
static struct omap_hwmod omap2420_i2c1_hwmod;
static struct omap_hwmod omap2420_i2c2_hwmod;
/* L4_CORE -> L4_WKUP interface */
static struct omap_hwmod_ocp_if omap2420_l4_core__l4_wkup = {
@ -139,6 +143,45 @@ static struct omap_hwmod_ocp_if omap2_l4_core__uart3 = {
.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 omap2420_i2c1_addr_space[] = {
{
.pa_start = 0x48070000,
.pa_end = 0x48070000 + OMAP2_I2C_AS_LEN - 1,
.flags = ADDR_TYPE_RT,
},
};
static struct omap_hwmod_ocp_if omap2420_l4_core__i2c1 = {
.master = &omap2420_l4_core_hwmod,
.slave = &omap2420_i2c1_hwmod,
.clk = "i2c1_ick",
.addr = omap2420_i2c1_addr_space,
.addr_cnt = ARRAY_SIZE(omap2420_i2c1_addr_space),
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* L4 CORE -> I2C2 interface */
static struct omap_hwmod_addr_space omap2420_i2c2_addr_space[] = {
{
.pa_start = 0x48072000,
.pa_end = 0x48072000 + OMAP2_I2C_AS_LEN - 1,
.flags = ADDR_TYPE_RT,
},
};
static struct omap_hwmod_ocp_if omap2420_l4_core__i2c2 = {
.master = &omap2420_l4_core_hwmod,
.slave = &omap2420_i2c2_hwmod,
.clk = "i2c2_ick",
.addr = omap2420_i2c2_addr_space,
.addr_cnt = ARRAY_SIZE(omap2420_i2c2_addr_space),
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* Slave interfaces on the L4_CORE interconnect */
static struct omap_hwmod_ocp_if *omap2420_l4_core_slaves[] = {
&omap2420_l3_main__l4_core,
@ -150,6 +193,8 @@ static struct omap_hwmod_ocp_if *omap2420_l4_core_masters[] = {
&omap2_l4_core__uart1,
&omap2_l4_core__uart2,
&omap2_l4_core__uart3,
&omap2420_l4_core__i2c1,
&omap2420_l4_core__i2c2
};
/* L4 CORE */
@ -418,6 +463,100 @@ static struct omap_hwmod omap2420_uart3_hwmod = {
.omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP2420),
};
/* I2C common */
static struct omap_hwmod_class_sysconfig i2c_sysc = {
.rev_offs = 0x00,
.sysc_offs = 0x20,
.syss_offs = 0x10,
.sysc_flags = SYSC_HAS_SOFTRESET,
.sysc_fields = &omap_hwmod_sysc_type1,
};
static struct omap_hwmod_class i2c_class = {
.name = "i2c",
.sysc = &i2c_sysc,
};
static struct omap_i2c_dev_attr i2c_dev_attr;
/* I2C1 */
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 *omap2420_i2c1_slaves[] = {
&omap2420_l4_core__i2c1,
};
static struct omap_hwmod omap2420_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 = OMAP2420_EN_I2C1_SHIFT,
.idlest_reg_id = 1,
.idlest_idle_bit = OMAP2420_ST_I2C1_SHIFT,
},
},
.slaves = omap2420_i2c1_slaves,
.slaves_cnt = ARRAY_SIZE(omap2420_i2c1_slaves),
.class = &i2c_class,
.dev_attr = &i2c_dev_attr,
.omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP2420),
.flags = HWMOD_16BIT_REG,
};
/* I2C2 */
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 *omap2420_i2c2_slaves[] = {
&omap2420_l4_core__i2c2,
};
static struct omap_hwmod omap2420_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 = OMAP2420_EN_I2C2_SHIFT,
.idlest_reg_id = 1,
.idlest_idle_bit = OMAP2420_ST_I2C2_SHIFT,
},
},
.slaves = omap2420_i2c2_slaves,
.slaves_cnt = ARRAY_SIZE(omap2420_i2c2_slaves),
.class = &i2c_class,
.dev_attr = &i2c_dev_attr,
.omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP2420),
.flags = HWMOD_16BIT_REG,
};
static __initdata struct omap_hwmod *omap2420_hwmods[] = {
&omap2420_l3_main_hwmod,
&omap2420_l4_core_hwmod,
@ -428,6 +567,8 @@ static __initdata struct omap_hwmod *omap2420_hwmods[] = {
&omap2420_uart1_hwmod,
&omap2420_uart2_hwmod,
&omap2420_uart3_hwmod,
&omap2420_i2c1_hwmod,
&omap2420_i2c2_hwmod,
NULL,
};
@ -435,5 +576,3 @@ int __init omap2420_hwmod_init(void)
{
return omap_hwmod_init(omap2420_hwmods);
}

155
arch/arm/mach-omap2/omap_hwmod_2430_data.c
View File

@ -16,6 +16,8 @@
#include <plat/cpu.h>
#include <plat/dma.h>
#include <plat/serial.h>
#include <plat/i2c.h>
#include <plat/omap24xx.h>
#include "omap_hwmod_common_data.h"
@ -77,6 +79,47 @@ static struct omap_hwmod omap2430_l4_wkup_hwmod;
static struct omap_hwmod omap2430_uart1_hwmod;
static struct omap_hwmod omap2430_uart2_hwmod;
static struct omap_hwmod omap2430_uart3_hwmod;
static struct omap_hwmod omap2430_i2c1_hwmod;
static struct omap_hwmod omap2430_i2c2_hwmod;
/* I2C IP block address space length (in bytes) */
#define OMAP2_I2C_AS_LEN 128
/* L4 CORE -> I2C1 interface */
static struct omap_hwmod_addr_space omap2430_i2c1_addr_space[] = {
{
.pa_start = 0x48070000,
.pa_end = 0x48070000 + OMAP2_I2C_AS_LEN - 1,
.flags = ADDR_TYPE_RT,
},
};
static struct omap_hwmod_ocp_if omap2430_l4_core__i2c1 = {
.master = &omap2430_l4_core_hwmod,
.slave = &omap2430_i2c1_hwmod,
.clk = "i2c1_ick",
.addr = omap2430_i2c1_addr_space,
.addr_cnt = ARRAY_SIZE(omap2430_i2c1_addr_space),
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* L4 CORE -> I2C2 interface */
static struct omap_hwmod_addr_space omap2430_i2c2_addr_space[] = {
{
.pa_start = 0x48072000,
.pa_end = 0x48072000 + OMAP2_I2C_AS_LEN - 1,
.flags = ADDR_TYPE_RT,
},
};
static struct omap_hwmod_ocp_if omap2430_l4_core__i2c2 = {
.master = &omap2430_l4_core_hwmod,
.slave = &omap2430_i2c2_hwmod,
.clk = "i2c2_ick",
.addr = omap2430_i2c2_addr_space,
.addr_cnt = ARRAY_SIZE(omap2430_i2c2_addr_space),
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* L4_CORE -> L4_WKUP interface */
static struct omap_hwmod_ocp_if omap2430_l4_core__l4_wkup = {
@ -418,6 +461,114 @@ static struct omap_hwmod omap2430_uart3_hwmod = {
.omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP2430),
};
/* I2C common */
static struct omap_hwmod_class_sysconfig i2c_sysc = {
.rev_offs = 0x00,
.sysc_offs = 0x20,
.syss_offs = 0x10,
.sysc_flags = (SYSC_HAS_SOFTRESET | SYSC_HAS_AUTOIDLE),
.sysc_fields = &omap_hwmod_sysc_type1,
};
static struct omap_hwmod_class i2c_class = {
.name = "i2c",
.sysc = &i2c_sysc,
};
static struct omap_i2c_dev_attr i2c_dev_attr;
/* 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 *omap2430_i2c1_slaves[] = {
&omap2430_l4_core__i2c1,
};
static struct omap_hwmod omap2430_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 = "i2chs1_fck",
.prcm = {
.omap2 = {
/*
* NOTE: The CM_FCLKEN* and CM_ICLKEN* for
* I2CHS IP's do not follow the usual pattern.
* prcm_reg_id alone cannot be used to program
* the iclk and fclk. Needs to be handled using
* additonal flags when clk handling is moved
* to hwmod framework.
*/
.module_offs = CORE_MOD,
.prcm_reg_id = 1,
.module_bit = OMAP2430_EN_I2CHS1_SHIFT,
.idlest_reg_id = 1,
.idlest_idle_bit = OMAP2430_ST_I2CHS1_SHIFT,
},
},
.slaves = omap2430_i2c1_slaves,
.slaves_cnt = ARRAY_SIZE(omap2430_i2c1_slaves),
.class = &i2c_class,
.dev_attr = &i2c1_dev_attr,
.omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP2430),
};
/* 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 *omap2430_i2c2_slaves[] = {
&omap2430_l4_core__i2c2,
};
static struct omap_hwmod omap2430_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 = "i2chs2_fck",
.prcm = {
.omap2 = {
.module_offs = CORE_MOD,
.prcm_reg_id = 1,
.module_bit = OMAP2430_EN_I2CHS2_SHIFT,
.idlest_reg_id = 1,
.idlest_idle_bit = OMAP2430_ST_I2CHS2_SHIFT,
},
},
.slaves = omap2430_i2c2_slaves,
.slaves_cnt = ARRAY_SIZE(omap2430_i2c2_slaves),
.class = &i2c_class,
.dev_attr = &i2c2_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,
@ -428,6 +579,8 @@ static __initdata struct omap_hwmod *omap2430_hwmods[] = {
&omap2430_uart1_hwmod,
&omap2430_uart2_hwmod,
&omap2430_uart3_hwmod,
&omap2430_i2c1_hwmod,
&omap2430_i2c2_hwmod,
NULL,
};
@ -435,5 +588,3 @@ int __init omap2430_hwmod_init(void)
{
return omap_hwmod_init(omap2430_hwmods);
}

233
arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
View File

@ -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,
};

237
arch/arm/mach-omap2/omap_hwmod_44xx_data.c
View File

@ -382,6 +382,238 @@ static struct omap_hwmod omap44xx_l4_wkup_hwmod = {
.omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
};
/*
* 'i2c' class
* multimaster high-speed i2c controller
*/
static struct omap_hwmod_class_sysconfig omap44xx_i2c_sysc = {
.sysc_offs = 0x0010,
.syss_offs = 0x0090,
.sysc_flags = (SYSC_HAS_ENAWAKEUP | SYSC_HAS_SIDLEMODE |
SYSC_HAS_CLOCKACTIVITY | SYSC_HAS_SOFTRESET |
SYSC_HAS_AUTOIDLE),
.idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
.sysc_fields = &omap_hwmod_sysc_type1,
};
static struct omap_hwmod_class omap44xx_i2c_hwmod_class = {
.name = "i2c",
.sysc = &omap44xx_i2c_sysc,
};
/* i2c1 */
static struct omap_hwmod omap44xx_i2c1_hwmod;
static struct omap_hwmod_irq_info omap44xx_i2c1_irqs[] = {
{ .irq = 56 + OMAP44XX_IRQ_GIC_START },
};
static struct omap_hwmod_dma_info omap44xx_i2c1_sdma_reqs[] = {
{ .name = "tx", .dma_req = 26 + OMAP44XX_DMA_REQ_START },
{ .name = "rx", .dma_req = 27 + OMAP44XX_DMA_REQ_START },
};
static struct omap_hwmod_addr_space omap44xx_i2c1_addrs[] = {
{
.pa_start = 0x48070000,
.pa_end = 0x480700ff,
.flags = ADDR_TYPE_RT
},
};
/* l4_per -> i2c1 */
static struct omap_hwmod_ocp_if omap44xx_l4_per__i2c1 = {
.master = &omap44xx_l4_per_hwmod,
.slave = &omap44xx_i2c1_hwmod,
.clk = "l4_div_ck",
.addr = omap44xx_i2c1_addrs,
.addr_cnt = ARRAY_SIZE(omap44xx_i2c1_addrs),
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* i2c1 slave ports */
static struct omap_hwmod_ocp_if *omap44xx_i2c1_slaves[] = {
&omap44xx_l4_per__i2c1,
};
static struct omap_hwmod omap44xx_i2c1_hwmod = {
.name = "i2c1",
.class = &omap44xx_i2c_hwmod_class,
.flags = HWMOD_INIT_NO_RESET,
.mpu_irqs = omap44xx_i2c1_irqs,
.mpu_irqs_cnt = ARRAY_SIZE(omap44xx_i2c1_irqs),
.sdma_reqs = omap44xx_i2c1_sdma_reqs,
.sdma_reqs_cnt = ARRAY_SIZE(omap44xx_i2c1_sdma_reqs),
.main_clk = "i2c1_fck",
.prcm = {
.omap4 = {
.clkctrl_reg = OMAP4430_CM_L4PER_I2C1_CLKCTRL,
},
},
.slaves = omap44xx_i2c1_slaves,
.slaves_cnt = ARRAY_SIZE(omap44xx_i2c1_slaves),
.omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
};
/* i2c2 */
static struct omap_hwmod omap44xx_i2c2_hwmod;
static struct omap_hwmod_irq_info omap44xx_i2c2_irqs[] = {
{ .irq = 57 + OMAP44XX_IRQ_GIC_START },
};
static struct omap_hwmod_dma_info omap44xx_i2c2_sdma_reqs[] = {
{ .name = "tx", .dma_req = 28 + OMAP44XX_DMA_REQ_START },
{ .name = "rx", .dma_req = 29 + OMAP44XX_DMA_REQ_START },
};
static struct omap_hwmod_addr_space omap44xx_i2c2_addrs[] = {
{
.pa_start = 0x48072000,
.pa_end = 0x480720ff,
.flags = ADDR_TYPE_RT
},
};
/* l4_per -> i2c2 */
static struct omap_hwmod_ocp_if omap44xx_l4_per__i2c2 = {
.master = &omap44xx_l4_per_hwmod,
.slave = &omap44xx_i2c2_hwmod,
.clk = "l4_div_ck",
.addr = omap44xx_i2c2_addrs,
.addr_cnt = ARRAY_SIZE(omap44xx_i2c2_addrs),
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* i2c2 slave ports */
static struct omap_hwmod_ocp_if *omap44xx_i2c2_slaves[] = {
&omap44xx_l4_per__i2c2,
};
static struct omap_hwmod omap44xx_i2c2_hwmod = {
.name = "i2c2",
.class = &omap44xx_i2c_hwmod_class,
.flags = HWMOD_INIT_NO_RESET,
.mpu_irqs = omap44xx_i2c2_irqs,
.mpu_irqs_cnt = ARRAY_SIZE(omap44xx_i2c2_irqs),
.sdma_reqs = omap44xx_i2c2_sdma_reqs,
.sdma_reqs_cnt = ARRAY_SIZE(omap44xx_i2c2_sdma_reqs),
.main_clk = "i2c2_fck",
.prcm = {
.omap4 = {
.clkctrl_reg = OMAP4430_CM_L4PER_I2C2_CLKCTRL,
},
},
.slaves = omap44xx_i2c2_slaves,
.slaves_cnt = ARRAY_SIZE(omap44xx_i2c2_slaves),
.omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
};
/* i2c3 */
static struct omap_hwmod omap44xx_i2c3_hwmod;
static struct omap_hwmod_irq_info omap44xx_i2c3_irqs[] = {
{ .irq = 61 + OMAP44XX_IRQ_GIC_START },
};
static struct omap_hwmod_dma_info omap44xx_i2c3_sdma_reqs[] = {
{ .name = "tx", .dma_req = 24 + OMAP44XX_DMA_REQ_START },
{ .name = "rx", .dma_req = 25 + OMAP44XX_DMA_REQ_START },
};
static struct omap_hwmod_addr_space omap44xx_i2c3_addrs[] = {
{
.pa_start = 0x48060000,
.pa_end = 0x480600ff,
.flags = ADDR_TYPE_RT
},
};
/* l4_per -> i2c3 */
static struct omap_hwmod_ocp_if omap44xx_l4_per__i2c3 = {
.master = &omap44xx_l4_per_hwmod,
.slave = &omap44xx_i2c3_hwmod,
.clk = "l4_div_ck",
.addr = omap44xx_i2c3_addrs,
.addr_cnt = ARRAY_SIZE(omap44xx_i2c3_addrs),
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* i2c3 slave ports */
static struct omap_hwmod_ocp_if *omap44xx_i2c3_slaves[] = {
&omap44xx_l4_per__i2c3,
};
static struct omap_hwmod omap44xx_i2c3_hwmod = {
.name = "i2c3",
.class = &omap44xx_i2c_hwmod_class,
.flags = HWMOD_INIT_NO_RESET,
.mpu_irqs = omap44xx_i2c3_irqs,
.mpu_irqs_cnt = ARRAY_SIZE(omap44xx_i2c3_irqs),
.sdma_reqs = omap44xx_i2c3_sdma_reqs,
.sdma_reqs_cnt = ARRAY_SIZE(omap44xx_i2c3_sdma_reqs),
.main_clk = "i2c3_fck",
.prcm = {
.omap4 = {
.clkctrl_reg = OMAP4430_CM_L4PER_I2C3_CLKCTRL,
},
},
.slaves = omap44xx_i2c3_slaves,
.slaves_cnt = ARRAY_SIZE(omap44xx_i2c3_slaves),
.omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
};
/* i2c4 */
static struct omap_hwmod omap44xx_i2c4_hwmod;
static struct omap_hwmod_irq_info omap44xx_i2c4_irqs[] = {
{ .irq = 62 + OMAP44XX_IRQ_GIC_START },
};
static struct omap_hwmod_dma_info omap44xx_i2c4_sdma_reqs[] = {
{ .name = "tx", .dma_req = 123 + OMAP44XX_DMA_REQ_START },
{ .name = "rx", .dma_req = 124 + OMAP44XX_DMA_REQ_START },
};
static struct omap_hwmod_addr_space omap44xx_i2c4_addrs[] = {
{
.pa_start = 0x48350000,
.pa_end = 0x483500ff,
.flags = ADDR_TYPE_RT
},
};
/* l4_per -> i2c4 */
static struct omap_hwmod_ocp_if omap44xx_l4_per__i2c4 = {
.master = &omap44xx_l4_per_hwmod,
.slave = &omap44xx_i2c4_hwmod,
.clk = "l4_div_ck",
.addr = omap44xx_i2c4_addrs,
.addr_cnt = ARRAY_SIZE(omap44xx_i2c4_addrs),
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
/* i2c4 slave ports */
static struct omap_hwmod_ocp_if *omap44xx_i2c4_slaves[] = {
&omap44xx_l4_per__i2c4,
};
static struct omap_hwmod omap44xx_i2c4_hwmod = {
.name = "i2c4",
.class = &omap44xx_i2c_hwmod_class,
.flags = HWMOD_INIT_NO_RESET,
.mpu_irqs = omap44xx_i2c4_irqs,
.mpu_irqs_cnt = ARRAY_SIZE(omap44xx_i2c4_irqs),
.sdma_reqs = omap44xx_i2c4_sdma_reqs,
.sdma_reqs_cnt = ARRAY_SIZE(omap44xx_i2c4_sdma_reqs),
.main_clk = "i2c4_fck",
.prcm = {
.omap4 = {
.clkctrl_reg = OMAP4430_CM_L4PER_I2C4_CLKCTRL,
},
},
.slaves = omap44xx_i2c4_slaves,
.slaves_cnt = ARRAY_SIZE(omap44xx_i2c4_slaves),
.omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
};
/*
* 'mpu_bus' class
* instance(s): mpu_private
@ -826,6 +1058,11 @@ static __initdata struct omap_hwmod *omap44xx_hwmods[] = {
&omap44xx_l4_cfg_hwmod,
&omap44xx_l4_per_hwmod,
&omap44xx_l4_wkup_hwmod,
/* i2c class */
&omap44xx_i2c1_hwmod,
&omap44xx_i2c2_hwmod,
&omap44xx_i2c3_hwmod,
&omap44xx_i2c4_hwmod,
/* mpu_bus class */
&omap44xx_mpu_private_hwmod,

3
arch/arm/mach-omap2/prm-regbits-34xx.h
View File

@ -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)

122
arch/arm/plat-omap/i2c.c
View File

@ -27,18 +27,18 @@
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/i2c-omap.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <mach/irqs.h>
#include <plat/mux.h>
#include <plat/i2c.h>
#include <plat/omap-pm.h>
#include <plat/omap_device.h>
#define OMAP_I2C_SIZE 0x3f
#define OMAP1_I2C_BASE 0xfffb3800
#define OMAP2_I2C_BASE1 0x48070000
#define OMAP2_I2C_BASE2 0x48072000
#define OMAP2_I2C_BASE3 0x48060000
#define OMAP4_I2C_BASE4 0x48350000
static const char name[] = "i2c_omap";
@ -55,15 +55,6 @@ static const char name[] = "i2c_omap";
static struct resource i2c_resources[][2] = {
{ I2C_RESOURCE_BUILDER(0, 0) },
#if defined(CONFIG_ARCH_OMAP2PLUS)
{ I2C_RESOURCE_BUILDER(OMAP2_I2C_BASE2, 0) },
#endif
#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
{ I2C_RESOURCE_BUILDER(OMAP2_I2C_BASE3, 0) },
#endif
#if defined(CONFIG_ARCH_OMAP4)
{ I2C_RESOURCE_BUILDER(OMAP4_I2C_BASE4, 0) },
#endif
};
#define I2C_DEV_BUILDER(bus_id, res, data) \
@ -77,18 +68,11 @@ static struct resource i2c_resources[][2] = {
}, \
}
static struct omap_i2c_bus_platform_data i2c_pdata[ARRAY_SIZE(i2c_resources)];
#define MAX_OMAP_I2C_HWMOD_NAME_LEN 16
#define OMAP_I2C_MAX_CONTROLLERS 4
static struct omap_i2c_bus_platform_data i2c_pdata[OMAP_I2C_MAX_CONTROLLERS];
static struct platform_device omap_i2c_devices[] = {
I2C_DEV_BUILDER(1, i2c_resources[0], &i2c_pdata[0]),
#if defined(CONFIG_ARCH_OMAP2PLUS)
I2C_DEV_BUILDER(2, i2c_resources[1], &i2c_pdata[1]),
#endif
#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
I2C_DEV_BUILDER(3, i2c_resources[2], &i2c_pdata[2]),
#endif
#if defined(CONFIG_ARCH_OMAP4)
I2C_DEV_BUILDER(4, i2c_resources[3], &i2c_pdata[3]),
#endif
};
#define OMAP_I2C_CMDLINE_SETUP (BIT(31))
@ -109,35 +93,20 @@ static int __init omap_i2c_nr_ports(void)
return ports;
}
/* Shared between omap2 and 3 */
static resource_size_t omap2_i2c_irq[3] __initdata = {
INT_24XX_I2C1_IRQ,
INT_24XX_I2C2_IRQ,
INT_34XX_I2C3_IRQ,
};
static resource_size_t omap4_i2c_irq[4] __initdata = {
OMAP44XX_IRQ_I2C1,
OMAP44XX_IRQ_I2C2,
OMAP44XX_IRQ_I2C3,
OMAP44XX_IRQ_I2C4,
};
static inline int omap1_i2c_add_bus(struct platform_device *pdev, int bus_id)
static inline int omap1_i2c_add_bus(int bus_id)
{
struct omap_i2c_bus_platform_data *pd;
struct resource *res;
struct platform_device *pdev;
struct omap_i2c_bus_platform_data *pdata;
pd = pdev->dev.platform_data;
res = pdev->resource;
res[0].start = OMAP1_I2C_BASE;
res[0].end = res[0].start + OMAP_I2C_SIZE;
res[1].start = INT_I2C;
omap1_i2c_mux_pins(bus_id);
pdev = &omap_i2c_devices[bus_id - 1];
pdata = &i2c_pdata[bus_id - 1];
return platform_device_register(pdev);
}
/*
* XXX This function is a temporary compatibility wrapper - only
* needed until the I2C driver can be converted to call
@ -148,52 +117,57 @@ static void omap_pm_set_max_mpu_wakeup_lat_compat(struct device *dev, long t)
omap_pm_set_max_mpu_wakeup_lat(dev, t);
}
static inline int omap2_i2c_add_bus(struct platform_device *pdev, int bus_id)
static struct omap_device_pm_latency omap_i2c_latency[] = {
[0] = {
.deactivate_func = omap_device_idle_hwmods,
.activate_func = omap_device_enable_hwmods,
.flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
},
};
static inline int omap2_i2c_add_bus(int bus_id)
{
struct resource *res;
resource_size_t *irq;
int l;
struct omap_hwmod *oh;
struct omap_device *od;
char oh_name[MAX_OMAP_I2C_HWMOD_NAME_LEN];
struct omap_i2c_bus_platform_data *pdata;
res = pdev->resource;
if (!cpu_is_omap44xx())
irq = omap2_i2c_irq;
else
irq = omap4_i2c_irq;
if (bus_id == 1) {
res[0].start = OMAP2_I2C_BASE1;
res[0].end = res[0].start + OMAP_I2C_SIZE;
}
res[1].start = irq[bus_id - 1];
omap2_i2c_mux_pins(bus_id);
l = snprintf(oh_name, MAX_OMAP_I2C_HWMOD_NAME_LEN, "i2c%d", bus_id);
WARN(l >= MAX_OMAP_I2C_HWMOD_NAME_LEN,
"String buffer overflow in I2C%d device setup\n", bus_id);
oh = omap_hwmod_lookup(oh_name);
if (!oh) {
pr_err("Could not look up %s\n", oh_name);
return -EEXIST;
}
pdata = &i2c_pdata[bus_id - 1];
/*
* When waiting for completion of a i2c transfer, we need to
* set a wake up latency constraint for the MPU. This is to
* ensure quick enough wakeup from idle, when transfer
* completes.
* Only omap3 has support for constraints
*/
if (cpu_is_omap34xx()) {
struct omap_i2c_bus_platform_data *pd;
if (cpu_is_omap34xx())
pdata->set_mpu_wkup_lat = omap_pm_set_max_mpu_wakeup_lat_compat;
od = omap_device_build(name, bus_id, oh, pdata,
sizeof(struct omap_i2c_bus_platform_data),
omap_i2c_latency, ARRAY_SIZE(omap_i2c_latency), 0);
WARN(IS_ERR(od), "Could not build omap_device for %s\n", name);
pd = pdev->dev.platform_data;
pd->set_mpu_wkup_lat = omap_pm_set_max_mpu_wakeup_lat_compat;
}
return platform_device_register(pdev);
return PTR_ERR(od);
}
static int __init omap_i2c_add_bus(int bus_id)
{
struct platform_device *pdev;
pdev = &omap_i2c_devices[bus_id - 1];
if (cpu_class_is_omap1())
return omap1_i2c_add_bus(pdev, bus_id);
return omap1_i2c_add_bus(bus_id);
else
return omap2_i2c_add_bus(pdev, bus_id);
return omap2_i2c_add_bus(bus_id);
}
/**

13
arch/arm/plat-omap/include/plat/i2c.h
View File

@ -36,6 +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);

24
arch/arm/plat-omap/include/plat/l4_3xxx.h Normal file
View File

@ -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

71
drivers/i2c/busses/i2c-omap.c
View File

@ -39,6 +39,7 @@
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/i2c-omap.h>
#include <linux/pm_runtime.h>
/* I2C controller revisions */
#define OMAP_I2C_REV_2 0x20
@ -175,8 +176,6 @@ struct omap_i2c_dev {
void __iomem *base; /* virtual */
int irq;
int reg_shift; /* bit shift for I2C register addresses */
struct clk *iclk; /* Interface clock */
struct clk *fclk; /* Functional clock */
struct completion cmd_complete;
struct resource *ioarea;
u32 latency; /* maximum mpu wkup latency */
@ -265,45 +264,18 @@ static inline u16 omap_i2c_read_reg(struct omap_i2c_dev *i2c_dev, int reg)
(i2c_dev->regs[reg] << i2c_dev->reg_shift));
}
static int __init omap_i2c_get_clocks(struct omap_i2c_dev *dev)
{
int ret;
dev->iclk = clk_get(dev->dev, "ick");
if (IS_ERR(dev->iclk)) {
ret = PTR_ERR(dev->iclk);
dev->iclk = NULL;
return ret;
}
dev->fclk = clk_get(dev->dev, "fck");
if (IS_ERR(dev->fclk)) {
ret = PTR_ERR(dev->fclk);
if (dev->iclk != NULL) {
clk_put(dev->iclk);
dev->iclk = NULL;
}
dev->fclk = NULL;
return ret;
}
return 0;
}
static void omap_i2c_put_clocks(struct omap_i2c_dev *dev)
{
clk_put(dev->fclk);
dev->fclk = NULL;
clk_put(dev->iclk);
dev->iclk = NULL;
}
static void omap_i2c_unidle(struct omap_i2c_dev *dev)
{
struct platform_device *pdev;
struct omap_i2c_bus_platform_data *pdata;
WARN_ON(!dev->idle);
clk_enable(dev->iclk);
clk_enable(dev->fclk);
pdev = to_platform_device(dev->dev);
pdata = pdev->dev.platform_data;
pm_runtime_get_sync(&pdev->dev);
if (cpu_is_omap34xx()) {
omap_i2c_write_reg(dev, OMAP_I2C_CON_REG, 0);
omap_i2c_write_reg(dev, OMAP_I2C_PSC_REG, dev->pscstate);
@ -326,10 +298,15 @@ static void omap_i2c_unidle(struct omap_i2c_dev *dev)
static void omap_i2c_idle(struct omap_i2c_dev *dev)
{
struct platform_device *pdev;
struct omap_i2c_bus_platform_data *pdata;
u16 iv;
WARN_ON(dev->idle);
pdev = to_platform_device(dev->dev);
pdata = pdev->dev.platform_data;
dev->iestate = omap_i2c_read_reg(dev, OMAP_I2C_IE_REG);
if (dev->rev >= OMAP_I2C_REV_ON_4430)
omap_i2c_write_reg(dev, OMAP_I2C_IRQENABLE_CLR, 1);
@ -345,8 +322,8 @@ static void omap_i2c_idle(struct omap_i2c_dev *dev)
omap_i2c_read_reg(dev, OMAP_I2C_STAT_REG);
}
dev->idle = 1;
clk_disable(dev->fclk);
clk_disable(dev->iclk);
pm_runtime_put_sync(&pdev->dev);
}
static int omap_i2c_init(struct omap_i2c_dev *dev)
@ -356,6 +333,7 @@ static int omap_i2c_init(struct omap_i2c_dev *dev)
unsigned long fclk_rate = 12000000;
unsigned long timeout;
unsigned long internal_clk = 0;
struct clk *fclk;
if (dev->rev >= OMAP_I2C_REV_2) {
/* Disable I2C controller before soft reset */
@ -414,7 +392,9 @@ static int omap_i2c_init(struct omap_i2c_dev *dev)
* always returns 12MHz for the functional clock, we can
* do this bit unconditionally.
*/
fclk_rate = clk_get_rate(dev->fclk);
fclk = clk_get(dev->dev, "fck");
fclk_rate = clk_get_rate(fclk);
clk_put(fclk);
/* TRM for 5912 says the I2C clock must be prescaled to be
* between 7 - 12 MHz. The XOR input clock is typically
@ -443,7 +423,9 @@ static int omap_i2c_init(struct omap_i2c_dev *dev)
internal_clk = 9600;
else
internal_clk = 4000;
fclk_rate = clk_get_rate(dev->fclk) / 1000;
fclk = clk_get(dev->dev, "fck");
fclk_rate = clk_get_rate(fclk) / 1000;
clk_put(fclk);
/* Compute prescaler divisor */
psc = fclk_rate / internal_clk;
@ -1048,14 +1030,12 @@ omap_i2c_probe(struct platform_device *pdev)
else
dev->reg_shift = 2;
if ((r = omap_i2c_get_clocks(dev)) != 0)
goto err_iounmap;
if (cpu_is_omap44xx())
dev->regs = (u8 *) omap4_reg_map;
else
dev->regs = (u8 *) reg_map;
pm_runtime_enable(&pdev->dev);
omap_i2c_unidle(dev);
dev->rev = omap_i2c_read_reg(dev, OMAP_I2C_REV_REG) & 0xff;
@ -1127,8 +1107,6 @@ omap_i2c_probe(struct platform_device *pdev)
err_unuse_clocks:
omap_i2c_write_reg(dev, OMAP_I2C_CON_REG, 0);
omap_i2c_idle(dev);
omap_i2c_put_clocks(dev);
err_iounmap:
iounmap(dev->base);
err_free_mem:
platform_set_drvdata(pdev, NULL);
@ -1150,7 +1128,6 @@ omap_i2c_remove(struct platform_device *pdev)
free_irq(dev->irq, dev);
i2c_del_adapter(&dev->adapter);
omap_i2c_write_reg(dev, OMAP_I2C_CON_REG, 0);
omap_i2c_put_clocks(dev);
iounmap(dev->base);
kfree(dev);
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);

5
include/linux/i2c-omap.h
View File

@ -1,9 +1,14 @@
#ifndef __I2C_OMAP_H__
#define __I2C_OMAP_H__
#include <linux/platform_device.h>
struct omap_i2c_bus_platform_data {
u32 clkrate;
void (*set_mpu_wkup_lat)(struct device *dev, long set);
int (*device_enable) (struct platform_device *pdev);
int (*device_shutdown) (struct platform_device *pdev);
int (*device_idle) (struct platform_device *pdev);
};
#endif