mfd: Add support for TWL4030/5030 dynamic power switching
The TWL4030/5030 family of multifunction devices allows board-specific
control of the the various regulators, clock and reset lines through
'scripts' that are loaded into its memory. This allows for Dynamic Power
Switching (DPS).
Implement board-independent core support for DPS that is then used by
board-specific code to load custom DPS scripts.
Signed-off-by: Amit Kucheria <amit.kucheria@verdurent.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/include/linux/i2c/twl4030.h b/include/linux/i2c/twl4030.h
index 3fd21d7..2d02dfd 100644
--- a/include/linux/i2c/twl4030.h
+++ b/include/linux/i2c/twl4030.h
@@ -223,19 +223,28 @@
/* Power bus message definitions */
-#define DEV_GRP_NULL 0x0
-#define DEV_GRP_P1 0x1
-#define DEV_GRP_P2 0x2
-#define DEV_GRP_P3 0x4
+/* The TWL4030/5030 splits its power-management resources (the various
+ * regulators, clock and reset lines) into 3 processor groups - P1, P2 and
+ * P3. These groups can then be configured to transition between sleep, wait-on
+ * and active states by sending messages to the power bus. See Section 5.4.2
+ * Power Resources of TWL4030 TRM
+ */
-#define RES_GRP_RES 0x0
-#define RES_GRP_PP 0x1
-#define RES_GRP_RC 0x2
+/* Processor groups */
+#define DEV_GRP_NULL 0x0
+#define DEV_GRP_P1 0x1 /* P1: all OMAP devices */
+#define DEV_GRP_P2 0x2 /* P2: all Modem devices */
+#define DEV_GRP_P3 0x4 /* P3: all peripheral devices */
+
+/* Resource groups */
+#define RES_GRP_RES 0x0 /* Reserved */
+#define RES_GRP_PP 0x1 /* Power providers */
+#define RES_GRP_RC 0x2 /* Reset and control */
#define RES_GRP_PP_RC 0x3
-#define RES_GRP_PR 0x4
+#define RES_GRP_PR 0x4 /* Power references */
#define RES_GRP_PP_PR 0x5
#define RES_GRP_RC_PR 0x6
-#define RES_GRP_ALL 0x7
+#define RES_GRP_ALL 0x7 /* All resource groups */
#define RES_TYPE2_R0 0x0
@@ -246,6 +255,41 @@
#define RES_STATE_SLEEP 0x8
#define RES_STATE_OFF 0x0
+/* Power resources */
+
+/* Power providers */
+#define RES_VAUX1 1
+#define RES_VAUX2 2
+#define RES_VAUX3 3
+#define RES_VAUX4 4
+#define RES_VMMC1 5
+#define RES_VMMC2 6
+#define RES_VPLL1 7
+#define RES_VPLL2 8
+#define RES_VSIM 9
+#define RES_VDAC 10
+#define RES_VINTANA1 11
+#define RES_VINTANA2 12
+#define RES_VINTDIG 13
+#define RES_VIO 14
+#define RES_VDD1 15
+#define RES_VDD2 16
+#define RES_VUSB_1V5 17
+#define RES_VUSB_1V8 18
+#define RES_VUSB_3V1 19
+#define RES_VUSBCP 20
+#define RES_REGEN 21
+/* Reset and control */
+#define RES_NRES_PWRON 22
+#define RES_CLKEN 23
+#define RES_SYSEN 24
+#define RES_HFCLKOUT 25
+#define RES_32KCLKOUT 26
+#define RES_RESET 27
+/* Power Reference */
+#define RES_Main_Ref 28
+
+#define TOTAL_RESOURCES 28
/*
* Power Bus Message Format ... these can be sent individually by Linux,
* but are usually part of downloaded scripts that are run when various
@@ -327,6 +371,36 @@
enum twl4030_usb_mode usb_mode;
};
+struct twl4030_ins {
+ u16 pmb_message;
+ u8 delay;
+};
+
+struct twl4030_script {
+ struct twl4030_ins *script;
+ unsigned size;
+ u8 flags;
+#define TWL4030_WRST_SCRIPT (1<<0)
+#define TWL4030_WAKEUP12_SCRIPT (1<<1)
+#define TWL4030_WAKEUP3_SCRIPT (1<<2)
+#define TWL4030_SLEEP_SCRIPT (1<<3)
+};
+
+struct twl4030_resconfig {
+ u8 resource;
+ u8 devgroup; /* Processor group that Power resource belongs to */
+ u8 type; /* Power resource addressed, 6 / broadcast message */
+ u8 type2; /* Power resource addressed, 3 / broadcast message */
+};
+
+struct twl4030_power_data {
+ struct twl4030_script **scripts;
+ unsigned num;
+ struct twl4030_resconfig *resource_config;
+};
+
+extern void twl4030_power_init(struct twl4030_power_data *triton2_scripts);
+
struct twl4030_platform_data {
unsigned irq_base, irq_end;
struct twl4030_bci_platform_data *bci;
@@ -334,6 +408,7 @@
struct twl4030_madc_platform_data *madc;
struct twl4030_keypad_data *keypad;
struct twl4030_usb_data *usb;
+ struct twl4030_power_data *power;
/* LDO regulators */
struct regulator_init_data *vdac;
@@ -364,7 +439,6 @@
#define TWL4030_VAUX3_DEV_GRP 0x1F
#define TWL4030_VAUX3_DEDICATED 0x22
-
#if defined(CONFIG_TWL4030_BCI_BATTERY) || \
defined(CONFIG_TWL4030_BCI_BATTERY_MODULE)
extern int twl4030charger_usb_en(int enable);