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authorLokesh Vutla <lokeshvutla@ti.com>2013-05-30 02:54:33 +0000
committerTom Rini <trini@ti.com>2013-06-10 08:43:09 -0400
commit4ca94d81869f8c9ba3e72eac3a99d3eef29df991 (patch)
treef20dc62eadba270614f604fef91f0219936998d7 /arch
parentaf1d002f896e7f9cda47c384db31349cf923e95c (diff)
downloadtalos-obmc-uboot-4ca94d81869f8c9ba3e72eac3a99d3eef29df991.tar.gz
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ARM: OMAP4+: pmic: Make generic bus init and write functions
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@ti.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/cpu/armv7/omap-common/clocks-common.c6
-rw-r--r--arch/arm/cpu/armv7/omap-common/vc.c14
-rw-r--r--arch/arm/cpu/armv7/omap4/hw_data.c11
-rw-r--r--arch/arm/cpu/armv7/omap5/hw_data.c3
-rw-r--r--arch/arm/include/asm/arch-omap4/sys_proto.h2
-rw-r--r--arch/arm/include/asm/arch-omap5/sys_proto.h2
-rw-r--r--arch/arm/include/asm/omap_common.h3
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 403b672f7e..6c8e0632c1 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 e6e5f7893c..a68f1d145d 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 650319ad36..b97cad4364 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 d2f5900013..585e318671 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 0126a85bd3..15e368224f 100644
--- a/arch/arm/include/asm/arch-omap4/sys_proto.h
+++ b/arch/arm/include/asm/arch-omap4/sys_proto.h
@@ -57,7 +57,7 @@ u32 cortex_rev(void);
void save_omap_boot_params(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 fb35a82d4e..91eb36cf8b 100644
--- a/arch/arm/include/asm/arch-omap5/sys_proto.h
+++ b/arch/arm/include/asm/arch-omap5/sys_proto.h
@@ -61,7 +61,7 @@ u32 cortex_rev(void);
void save_omap_boot_params(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 712d78b0a6..b70575b1b5 100644
--- a/arch/arm/include/asm/omap_common.h
+++ b/arch/arm/include/asm/omap_common.h
@@ -501,6 +501,9 @@ 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 {
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