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mfd: Add support for TWL4030/5030 dynamic power switching

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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>
This commit is contained in:
Amit Kucheria 2009-08-31 18:32:18 +02:00 • committed by Samuel Ortiz
parent 12992dd89c
commit ebf0bd366e
5 changed files with 574 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

94
include/linux/i2c/twl4030.h
View file

@ -223,19 +223,28 @@ int twl4030_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes);
/* 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 @@ int twl4030_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes);
#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 @@ struct twl4030_usb_data {
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_platform_data {
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 @@ int twl4030_sih_setup(int module);
#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);