@@ -4,7 +4,7 @@
# Common support
obj-y := id.o io.o control.o mux.o devices.o serial.o gpmc.o timer-gp.o pm.o \
- common.o gpio.o dma.o wd_timer.o
+ common.o gpio.o dma.o wd_timer.o omap_pmic.o
omap-2-3-common = irq.o sdrc.o
hwmod-common = omap_hwmod.o \
new file mode 100644
@@ -0,0 +1,74 @@
+/*
+ * Registration hooks for PMICs used with OMAP
+ *
+ * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
+ * Nishanth Menon
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+
+#include "voltage.h"
+
+#include "pm.h"
+
+/**
+ * omap_pmic_init() - trigger point for all PMIC initializers
+ */
+void __init omap_pmic_init(void)
+{
+ omap_twl_init();
+}
+
+/**
+ * omap_pmic_register_data() - Register the PMIC information to OMAP mapping
+ * @omap_pmic__maps: array ending with a empty element representing the maps
+ */
+int __init omap_pmic_register_data(struct omap_pmic_map *omap_pmic_maps)
+{
+ struct voltagedomain *voltdm;
+ struct omap_pmic_map *map;
+ int r;
+
+ if (!omap_pmic_maps)
+ return 0;
+
+ map = omap_pmic_maps;
+
+ while(map->name) {
+ if (!omap_chip_is(map->omap_chip))
+ goto next;
+
+ voltdm = voltdm_lookup(map->name);
+ if (IS_ERR_OR_NULL(voltdm)) {
+ pr_err("%s: unable to find map %s\n",__func__,
+ map->name);
+ goto next;
+ }
+ if (IS_ERR_OR_NULL(map->pmic_data)) {
+ pr_warning("%s: domain[%s] has no pmic data\n",__func__,
+ map->name);
+ goto next;
+ }
+
+ r = omap_voltage_register_pmic(voltdm, map->pmic_data);
+ if (r) {
+ pr_warning("%s: domain[%s] register returned %d\n",
+ __func__, map->name, r);
+ goto next;
+ }
+ if (map->special_action) {
+ r = map->special_action(voltdm);
+ WARN(r, "%s: domain[%s] action returned %d\n", __func__,
+ map->name, r);
+ }
+next:
+ map++;
+ }
+
+ return 0;
+}
@@ -38,11 +38,6 @@
#define OMAP4_VDD_CORE_SR_VOLT_REG 0x61
#define OMAP4_VDD_CORE_SR_CMD_REG 0x62
-#define OMAP4_VP_CONFIG_ERROROFFSET 0x00
-#define OMAP4_VP_VSTEPMIN_VSTEPMIN 0x01
-#define OMAP4_VP_VSTEPMAX_VSTEPMAX 0x04
-#define OMAP4_VP_VLIMITTO_TIMEOUT_US 200
-
static bool is_offset_valid;
static u8 smps_offset;
/*
@@ -245,38 +240,9 @@ static struct omap_voltdm_pmic omap4_core_pmic = {
.uv_to_vsel = twl6030_uv_to_vsel,
};
-int __init omap4_twl_init(void)
+static int __init twl_set_sr(struct voltagedomain *voltdm)
{
- struct voltagedomain *voltdm;
-
- if (!cpu_is_omap44xx())
- return -ENODEV;
-
- voltdm = voltdm_lookup("mpu");
- omap_voltage_register_pmic(voltdm, &omap4_mpu_pmic);
-
- voltdm = voltdm_lookup("iva");
- omap_voltage_register_pmic(voltdm, &omap4_iva_pmic);
-
- voltdm = voltdm_lookup("core");
- omap_voltage_register_pmic(voltdm, &omap4_core_pmic);
-
- return 0;
-}
-
-int __init omap3_twl_init(void)
-{
- struct voltagedomain *voltdm;
-
- if (!cpu_is_omap34xx())
- return -ENODEV;
-
- if (cpu_is_omap3630()) {
- omap3_mpu_pmic.vp_vddmin = OMAP3630_VP1_VLIMITTO_VDDMIN;
- omap3_mpu_pmic.vp_vddmax = OMAP3630_VP1_VLIMITTO_VDDMAX;
- omap3_core_pmic.vp_vddmin = OMAP3630_VP2_VLIMITTO_VDDMIN;
- omap3_core_pmic.vp_vddmax = OMAP3630_VP2_VLIMITTO_VDDMAX;
- }
+ int r = 0;
/*
* The smartreflex bit on twl4030 specifies if the setting of voltage
@@ -288,15 +254,52 @@ int __init omap3_twl_init(void)
* voltage scaling will not function on TWL over I2C_SR.
*/
if (!twl_sr_enable_autoinit)
- omap3_twl_set_sr_bit(true);
+ r = omap3_twl_set_sr_bit(true);
+ return r;
+}
- voltdm = voltdm_lookup("mpu_iva");
- omap_voltage_register_pmic(voltdm, &omap3_mpu_pmic);
+static __initdata struct omap_pmic_map omap_twl_map[] = {
+ {
+ .name = "mpu",
+ .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+ .pmic_data = &omap3_mpu_pmic,
+ .special_action = twl_set_sr,
+ },
+ {
+ .name = "core",
+ .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+ .pmic_data = &omap3_core_pmic,
+ },
+ {
+ .name = "mpu",
+ .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+ .pmic_data = &omap4_mpu_pmic,
+ },
+ {
+ .name = "core",
+ .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+ .pmic_data = &omap4_core_pmic,
+ },
+ {
+ .name = "iva",
+ .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+ .pmic_data = &omap4_iva_pmic,
+ },
+ /* Terminator */
+ { .name = NULL,.pmic_data = NULL},
+};
- voltdm = voltdm_lookup("core");
- omap_voltage_register_pmic(voltdm, &omap3_core_pmic);
+int __init omap_twl_init(void)
+{
+ /* Reuse OMAP3430 values */
+ if (cpu_is_omap3630()) {
+ omap3_mpu_pmic.vp_vddmin = OMAP3630_VP1_VLIMITTO_VDDMIN;
+ omap3_mpu_pmic.vp_vddmax = OMAP3630_VP1_VLIMITTO_VDDMAX;
+ omap3_core_pmic.vp_vddmin = OMAP3630_VP2_VLIMITTO_VDDMIN;
+ omap3_core_pmic.vp_vddmax = OMAP3630_VP2_VLIMITTO_VDDMAX;
+ }
- return 0;
+ return omap_pmic_register_data(omap_twl_map);
}
/**
@@ -251,9 +251,8 @@ postcore_initcall(omap2_common_pm_init);
static int __init omap2_common_pm_late_init(void)
{
- /* Init the OMAP TWL parameters */
- omap3_twl_init();
- omap4_twl_init();
+ /* Init the OMAP PMIC parameters */
+ omap_pmic_init();
/* Init the voltage layer */
omap_voltage_late_init();
@@ -124,16 +124,39 @@ static inline int omap_devinit_smartreflex(void)
static inline void omap_enable_smartreflex_on_init(void) {}
#endif
-#ifdef CONFIG_TWL4030_CORE
-extern int omap3_twl_init(void);
-extern int omap4_twl_init(void);
-extern int omap3_twl_set_sr_bit(bool enable);
+/**
+ * struct omap_pmic_map - Describe the OMAP PMIC data for OMAP
+ * @name: name of the voltage domain
+ * @pmic_data: pmic data associated with it
+ * @omap_chip: initialize with OMAP_CHIP_INIT the OMAP chips this data maps to
+ * @special_action: callback for any specific action to take for that map
+ *
+ * Since we support multiple PMICs each potentially functioning on multiple
+ * OMAP devices, we describe the parameters in a map allowing us to reuse the
+ * data as necessary.
+ */
+struct omap_pmic_map {
+ char *name;
+ struct omap_voltdm_pmic *pmic_data;
+ struct omap_chip_id omap_chip;
+ int (*special_action)(struct voltagedomain *);
+};
+
+#ifdef CONFIG_PM
+extern int omap_pmic_register_data(struct omap_pmic_map *map);
#else
-static inline int omap3_twl_init(void)
+static inline int omap_pmic_register_data(struct omap_pmic_map *map)
{
return -EINVAL;
}
-static inline int omap4_twl_init(void)
+#endif
+extern void omap_pmic_init(void);
+
+#ifdef CONFIG_TWL4030_CORE
+extern int omap_twl_init(void);
+extern int omap3_twl_set_sr_bit(bool enable);
+#else
+static inline int omap_twl_init(void)
{
return -EINVAL;
}
@@ -127,6 +127,11 @@ struct omap_volt_data {
#define OMAP4_VP_CORE_VLIMITTO_VDDMIN 830000
#define OMAP4_VP_CORE_VLIMITTO_VDDMAX 1200000
+#define OMAP4_VP_CONFIG_ERROROFFSET 0x00
+#define OMAP4_VP_VSTEPMIN_VSTEPMIN 0x01
+#define OMAP4_VP_VSTEPMAX_VSTEPMAX 0x04
+#define OMAP4_VP_VLIMITTO_TIMEOUT_US 200
+
/**
* struct omap_voltdm_pmic - PMIC specific data required by voltage driver.
* @slew_rate: PMIC slew rate (in uv/us)
Since we are starting to use multiple PMICs in various combinations, use the existing .omap_chip = OMAP_CHIP_INIT() to mark the structures we are interested in using per OMAP device we are currently running on. This mapping is based on the default device recommendations from TI. Boards using custom PMICs now have an opportunity to register their own custom mapping. With this we no longer need omap4_twl_init and omap3_twl_int instead we introduce a registration mechanism which is PMIC generic and move twl implementation to use the same. Signed-off-by: Nishanth Menon <nm@ti.com> --- arch/arm/mach-omap2/Makefile | 2 +- arch/arm/mach-omap2/omap_pmic.c | 74 +++++++++++++++++++++++++++++++++ arch/arm/mach-omap2/omap_twl.c | 87 ++++++++++++++++++++------------------- arch/arm/mach-omap2/pm.c | 5 +- arch/arm/mach-omap2/pm.h | 35 +++++++++++++--- arch/arm/mach-omap2/voltage.h | 5 ++ 6 files changed, 156 insertions(+), 52 deletions(-) create mode 100644 arch/arm/mach-omap2/omap_pmic.c