[U-Boot] [PATCH V2 4/4] ARM: OMAP4+: pmic: Make generic bus init and write functions
Lokesh Vutla
lokeshvutla at ti.com
Thu May 30 14:54:33 CEST 2013
Voltage scaling can be done in two ways:
-> Using SR I2C
-> Using GP I2C
In order to support both, have a function pointer in pmic_data
so that we can call as per our requirement.
Signed-off-by: Lokesh Vutla <lokeshvutla at ti.com>
---
arch/arm/cpu/armv7/omap-common/clocks-common.c | 6 ++----
arch/arm/cpu/armv7/omap-common/vc.c | 14 +++++++++++++-
arch/arm/cpu/armv7/omap4/hw_data.c | 11 ++++++++++-
arch/arm/cpu/armv7/omap5/hw_data.c | 3 +++
arch/arm/include/asm/arch-omap4/sys_proto.h | 2 +-
arch/arm/include/asm/arch-omap5/sys_proto.h | 2 +-
arch/arm/include/asm/omap_common.h | 3 +++
7 files changed, 33 insertions(+), 8 deletions(-)
diff --git a/arch/arm/cpu/armv7/omap-common/clocks-common.c b/arch/arm/cpu/armv7/omap-common/clocks-common.c
index e5c95db..a1ada58 100644
--- a/arch/arm/cpu/armv7/omap-common/clocks-common.c
+++ b/arch/arm/cpu/armv7/omap-common/clocks-common.c
@@ -487,6 +487,7 @@ void do_scale_vcore(u32 vcore_reg, u32 volt_mv, struct pmic_data *pmic)
u32 offset = volt_mv;
int ret = 0;
+ pmic->pmic_bus_init();
/* See if we can first get the GPIO if needed */
if (pmic->gpio_en)
ret = gpio_request(pmic->gpio, "PMIC_GPIO");
@@ -509,8 +510,7 @@ void do_scale_vcore(u32 vcore_reg, u32 volt_mv, struct pmic_data *pmic)
debug("do_scale_vcore: volt - %d offset_code - 0x%x\n", volt_mv,
offset_code);
- if (omap_vc_bypass_send_value(SMPS_I2C_SLAVE_ADDR,
- vcore_reg, offset_code))
+ if (pmic->pmic_write(pmic->i2c_slave_addr, vcore_reg, offset_code))
printf("Scaling voltage failed for 0x%x\n", vcore_reg);
if (pmic->gpio_en)
@@ -525,8 +525,6 @@ void do_scale_vcore(u32 vcore_reg, u32 volt_mv, struct pmic_data *pmic)
*/
void scale_vcores(struct vcores_data const *vcores)
{
- omap_vc_init(PRM_VC_I2C_CHANNEL_FREQ_KHZ);
-
do_scale_vcore(vcores->core.addr, vcores->core.value,
vcores->core.pmic);
diff --git a/arch/arm/cpu/armv7/omap-common/vc.c b/arch/arm/cpu/armv7/omap-common/vc.c
index e6e5f78..a68f1d1 100644
--- a/arch/arm/cpu/armv7/omap-common/vc.c
+++ b/arch/arm/cpu/armv7/omap-common/vc.c
@@ -17,6 +17,7 @@
#include <common.h>
#include <asm/omap_common.h>
#include <asm/arch/sys_proto.h>
+#include <asm/arch/clock.h>
/*
* Define Master code if there are multiple masters on the I2C_SR bus.
@@ -57,7 +58,7 @@
* omap_vc_init() - Initialization for Voltage controller
* @speed_khz: I2C buspeed in KHz
*/
-void omap_vc_init(u16 speed_khz)
+static void omap_vc_init(u16 speed_khz)
{
u32 val;
u32 sys_clk_khz, cycles_hi, cycles_low;
@@ -137,3 +138,14 @@ int omap_vc_bypass_send_value(u8 sa, u8 reg_addr, u8 reg_data)
/* All good.. */
return 0;
}
+
+void sri2c_init(void)
+{
+ static int sri2c = 1;
+
+ if (sri2c) {
+ omap_vc_init(PRM_VC_I2C_CHANNEL_FREQ_KHZ);
+ sri2c = 0;
+ }
+ return;
+}
diff --git a/arch/arm/cpu/armv7/omap4/hw_data.c b/arch/arm/cpu/armv7/omap4/hw_data.c
index 650319a..b97cad4 100644
--- a/arch/arm/cpu/armv7/omap4/hw_data.c
+++ b/arch/arm/cpu/armv7/omap4/hw_data.c
@@ -219,6 +219,9 @@ struct pmic_data twl6030_4430es1 = {
.step = 12660, /* 12.66 mV represented in uV */
/* The code starts at 1 not 0 */
.start_code = 1,
+ .i2c_slave_addr = SMPS_I2C_SLAVE_ADDR,
+ .pmic_bus_init = sri2c_init,
+ .pmic_write = omap_vc_bypass_send_value,
};
struct pmic_data twl6030 = {
@@ -226,6 +229,9 @@ struct pmic_data twl6030 = {
.step = 12660, /* 12.66 mV represented in uV */
/* The code starts at 1 not 0 */
.start_code = 1,
+ .i2c_slave_addr = SMPS_I2C_SLAVE_ADDR,
+ .pmic_bus_init = sri2c_init,
+ .pmic_write = omap_vc_bypass_send_value,
};
struct pmic_data tps62361 = {
@@ -233,7 +239,10 @@ struct pmic_data tps62361 = {
.step = 10000, /* 10 mV represented in uV */
.start_code = 0,
.gpio = TPS62361_VSEL0_GPIO,
- .gpio_en = 1
+ .gpio_en = 1,
+ .i2c_slave_addr = SMPS_I2C_SLAVE_ADDR,
+ .pmic_bus_init = sri2c_init,
+ .pmic_write = omap_vc_bypass_send_value,
};
struct vcores_data omap4430_volts_es1 = {
diff --git a/arch/arm/cpu/armv7/omap5/hw_data.c b/arch/arm/cpu/armv7/omap5/hw_data.c
index d2f5900..585e318 100644
--- a/arch/arm/cpu/armv7/omap5/hw_data.c
+++ b/arch/arm/cpu/armv7/omap5/hw_data.c
@@ -289,6 +289,9 @@ struct pmic_data palmas = {
* Offset code 0 switches OFF the SMPS
*/
.start_code = 6,
+ .i2c_slave_addr = SMPS_I2C_SLAVE_ADDR,
+ .pmic_bus_init = sri2c_init,
+ .pmic_write = omap_vc_bypass_send_value,
};
struct vcores_data omap5430_volts = {
diff --git a/arch/arm/include/asm/arch-omap4/sys_proto.h b/arch/arm/include/asm/arch-omap4/sys_proto.h
index 1644ba6..38d4768 100644
--- a/arch/arm/include/asm/arch-omap4/sys_proto.h
+++ b/arch/arm/include/asm/arch-omap4/sys_proto.h
@@ -56,7 +56,7 @@ u32 omap_sdram_size(void);
u32 cortex_rev(void);
void init_omap_revision(void);
void do_io_settings(void);
-void omap_vc_init(u16 speed_khz);
+void sri2c_init(void);
int omap_vc_bypass_send_value(u8 sa, u8 reg_addr, u8 reg_data);
u32 warm_reset(void);
void force_emif_self_refresh(void);
diff --git a/arch/arm/include/asm/arch-omap5/sys_proto.h b/arch/arm/include/asm/arch-omap5/sys_proto.h
index 2375470..52c2271 100644
--- a/arch/arm/include/asm/arch-omap5/sys_proto.h
+++ b/arch/arm/include/asm/arch-omap5/sys_proto.h
@@ -60,7 +60,7 @@ u32 omap_sdram_size(void);
u32 cortex_rev(void);
void init_omap_revision(void);
void do_io_settings(void);
-void omap_vc_init(u16 speed_khz);
+void sri2c_init(void);
int omap_vc_bypass_send_value(u8 sa, u8 reg_addr, u8 reg_data);
u32 warm_reset(void);
void force_emif_self_refresh(void);
diff --git a/arch/arm/include/asm/omap_common.h b/arch/arm/include/asm/omap_common.h
index 8747bff..3f1d31d 100644
--- a/arch/arm/include/asm/omap_common.h
+++ b/arch/arm/include/asm/omap_common.h
@@ -495,6 +495,9 @@ struct pmic_data {
u32 start_code;
unsigned gpio;
int gpio_en;
+ u32 i2c_slave_addr;
+ void (*pmic_bus_init)(void);
+ int (*pmic_write)(u8 sa, u8 reg_addr, u8 reg_data);
};
struct volts {
--
1.7.9.5
More information about the U-Boot
mailing list