mfd: Add support for TWL4030/5030 dynamic power switching (ebf0bd36) · Commits · e / devices / android_kernel_teracube_emerald

drivers/mfd/Kconfig

+13 −0

Original line number	Diff line number	Diff line
		@@ -108,6 +108,19 @@ config TWL4030_CORE
		high speed USB OTG transceiver, an audio codec (on most
		versions) and many other features.

		config TWL4030_POWER
		bool "Support power resources on TWL4030 family chips"
		depends on TWL4030_CORE && ARM
		help
		Say yes here if you want to use the power resources on the
		TWL4030 family chips. Most of these resources are regulators,
		which have a separate driver; some are control signals, such
		as clock request handshaking.

		This driver uses board-specific data to initialize the resources
		and load scripts controling which resources are switched off/on
		or reset when a sleep, wakeup or warm reset event occurs.

		config MFD_TMIO
		bool
		default n

drivers/mfd/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -25,6 +25,7 @@ obj-$(CONFIG_TPS65010) += tps65010.o
		obj-$(CONFIG_MENELAUS) += menelaus.o

		obj-$(CONFIG_TWL4030_CORE) += twl4030-core.o twl4030-irq.o
		obj-$(CONFIG_TWL4030_POWER) += twl4030-power.o

		obj-$(CONFIG_MFD_MC13783) += mc13783-core.o

drivers/mfd/twl4030-core.c

+10 −0

Original line number	Diff line number	Diff line
		@@ -89,6 +89,12 @@
		#define twl_has_madc() false
		#endif

		#ifdef CONFIG_TWL4030_POWER
		#define twl_has_power() true
		#else
		#define twl_has_power() false
		#endif

		#if defined(CONFIG_RTC_DRV_TWL4030) \|\| defined(CONFIG_RTC_DRV_TWL4030_MODULE)
		#define twl_has_rtc() true
		#else
		@@ -801,6 +807,10 @@ twl4030_probe(struct i2c_client client, const struct i2c_device_id id)
		/* setup clock framework */
		clocks_init(&client->dev);

		/* load power event scripts */
		if (twl_has_power() && pdata->power)
		twl4030_power_init(pdata->power);

		/* Maybe init the T2 Interrupt subsystem */
		if (client->irq
		&& pdata->irq_base

drivers/mfd/twl4030-power.c

0 → 100644

+466 −0

Original line number	Diff line number	Diff line
		/*
		* linux/drivers/i2c/chips/twl4030-power.c
		*
		* Handle TWL4030 Power initialization
		*
		* Copyright (C) 2008 Nokia Corporation
		* Copyright (C) 2006 Texas Instruments, Inc
		*
		* Written by Kalle Jokiniemi
		* Peter De Schrijver <peter.de-schrijver@nokia.com>
		* Several fixes by Amit Kucheria <amit.kucheria@verdurent.com>
		*
		* This file is subject to the terms and conditions of the GNU General
		* Public License. See the file "COPYING" in the main directory of this
		* archive for more details.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*
		* You should have received a copy of the GNU General Public License
		* along with this program; if not, write to the Free Software
		* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
		*/

		#include <linux/module.h>
		#include <linux/pm.h>
		#include <linux/i2c/twl4030.h>
		#include <linux/platform_device.h>

		#include <asm/mach-types.h>

		static u8 twl4030_start_script_address = 0x2b;

		#define PWR_P1_SW_EVENTS 0x10
		#define PWR_DEVOFF (1<<0)

		#define PHY_TO_OFF_PM_MASTER(p) (p - 0x36)
		#define PHY_TO_OFF_PM_RECEIVER(p) (p - 0x5b)

		/* resource - hfclk */
		#define R_HFCLKOUT_DEV_GRP PHY_TO_OFF_PM_RECEIVER(0xe6)

		/* PM events */
		#define R_P1_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x46)
		#define R_P2_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x47)
		#define R_P3_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x48)
		#define R_CFG_P1_TRANSITION PHY_TO_OFF_PM_MASTER(0x36)
		#define R_CFG_P2_TRANSITION PHY_TO_OFF_PM_MASTER(0x37)
		#define R_CFG_P3_TRANSITION PHY_TO_OFF_PM_MASTER(0x38)

		#define LVL_WAKEUP 0x08

		#define ENABLE_WARMRESET (1<<4)

		#define END_OF_SCRIPT 0x3f

		#define R_SEQ_ADD_A2S PHY_TO_OFF_PM_MASTER(0x55)
		#define R_SEQ_ADD_S2A12 PHY_TO_OFF_PM_MASTER(0x56)
		#define R_SEQ_ADD_S2A3 PHY_TO_OFF_PM_MASTER(0x57)
		#define R_SEQ_ADD_WARM PHY_TO_OFF_PM_MASTER(0x58)
		#define R_MEMORY_ADDRESS PHY_TO_OFF_PM_MASTER(0x59)
		#define R_MEMORY_DATA PHY_TO_OFF_PM_MASTER(0x5a)

		#define R_PROTECT_KEY 0x0E
		#define KEY_1 0xC0
		#define KEY_2 0x0C

		/* resource configuration registers */

		#define DEVGROUP_OFFSET 0
		#define TYPE_OFFSET 1

		/* Bit positions */
		#define DEVGROUP_SHIFT 5
		#define DEVGROUP_MASK (7 << DEVGROUP_SHIFT)
		#define TYPE_SHIFT 0
		#define TYPE_MASK (7 << TYPE_SHIFT)
		#define TYPE2_SHIFT 3
		#define TYPE2_MASK (3 << TYPE2_SHIFT)

		static u8 res_config_addrs[] = {
		[RES_VAUX1] = 0x17,
		[RES_VAUX2] = 0x1b,
		[RES_VAUX3] = 0x1f,
		[RES_VAUX4] = 0x23,
		[RES_VMMC1] = 0x27,
		[RES_VMMC2] = 0x2b,
		[RES_VPLL1] = 0x2f,
		[RES_VPLL2] = 0x33,
		[RES_VSIM] = 0x37,
		[RES_VDAC] = 0x3b,
		[RES_VINTANA1] = 0x3f,
		[RES_VINTANA2] = 0x43,
		[RES_VINTDIG] = 0x47,
		[RES_VIO] = 0x4b,
		[RES_VDD1] = 0x55,
		[RES_VDD2] = 0x63,
		[RES_VUSB_1V5] = 0x71,
		[RES_VUSB_1V8] = 0x74,
		[RES_VUSB_3V1] = 0x77,
		[RES_VUSBCP] = 0x7a,
		[RES_REGEN] = 0x7f,
		[RES_NRES_PWRON] = 0x82,
		[RES_CLKEN] = 0x85,
		[RES_SYSEN] = 0x88,
		[RES_HFCLKOUT] = 0x8b,
		[RES_32KCLKOUT] = 0x8e,
		[RES_RESET] = 0x91,
		[RES_Main_Ref] = 0x94,
		};

		static int __init twl4030_write_script_byte(u8 address, u8 byte)
		{
		int err;

		err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, address,
		R_MEMORY_ADDRESS);
		if (err)
		goto out;
		err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, byte,
		R_MEMORY_DATA);
		out:
		return err;
		}

		static int __init twl4030_write_script_ins(u8 address, u16 pmb_message,
		u8 delay, u8 next)
		{
		int err;

		address *= 4;
		err = twl4030_write_script_byte(address++, pmb_message >> 8);
		if (err)
		goto out;
		err = twl4030_write_script_byte(address++, pmb_message & 0xff);
		if (err)
		goto out;
		err = twl4030_write_script_byte(address++, delay);
		if (err)
		goto out;
		err = twl4030_write_script_byte(address++, next);
		out:
		return err;
		}

		static int __init twl4030_write_script(u8 address, struct twl4030_ins *script,
		int len)
		{
		int err;

		for (; len; len--, address++, script++) {
		if (len == 1) {
		err = twl4030_write_script_ins(address,
		script->pmb_message,
		script->delay,
		END_OF_SCRIPT);
		if (err)
		break;
		} else {
		err = twl4030_write_script_ins(address,
		script->pmb_message,
		script->delay,
		address + 1);
		if (err)
		break;
		}
		}
		return err;
		}

		static int __init twl4030_config_wakeup3_sequence(u8 address)
		{
		int err;
		u8 data;

		/* Set SLEEP to ACTIVE SEQ address for P3 */
		err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, address,
		R_SEQ_ADD_S2A3);
		if (err)
		goto out;

		/* P3 LVL_WAKEUP should be on LEVEL */
		err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &data,
		R_P3_SW_EVENTS);
		if (err)
		goto out;
		data \|= LVL_WAKEUP;
		err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, data,
		R_P3_SW_EVENTS);
		out:
		if (err)
		pr_err("TWL4030 wakeup sequence for P3 config error\n");
		return err;
		}

		static int __init twl4030_config_wakeup12_sequence(u8 address)
		{
		int err = 0;
		u8 data;

		/* Set SLEEP to ACTIVE SEQ address for P1 and P2 */
		err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, address,
		R_SEQ_ADD_S2A12);
		if (err)
		goto out;

		/* P1/P2 LVL_WAKEUP should be on LEVEL */
		err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &data,
		R_P1_SW_EVENTS);
		if (err)
		goto out;

		data \|= LVL_WAKEUP;
		err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, data,
		R_P1_SW_EVENTS);
		if (err)
		goto out;

		err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &data,
		R_P2_SW_EVENTS);
		if (err)
		goto out;

		data \|= LVL_WAKEUP;
		err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, data,
		R_P2_SW_EVENTS);
		if (err)
		goto out;

		if (machine_is_omap_3430sdp() \|\| machine_is_omap_ldp()) {
		/* Disabling AC charger effect on sleep-active transitions */
		err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &data,
		R_CFG_P1_TRANSITION);
		if (err)
		goto out;
		data &= ~(1<<1);
		err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, data ,
		R_CFG_P1_TRANSITION);
		if (err)
		goto out;
		}

		out:
		if (err)
		pr_err("TWL4030 wakeup sequence for P1 and P2" \
		"config error\n");
		return err;
		}

		static int __init twl4030_config_sleep_sequence(u8 address)
		{
		int err;

		/* Set ACTIVE to SLEEP SEQ address in T2 memory*/
		err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, address,
		R_SEQ_ADD_A2S);

		if (err)
		pr_err("TWL4030 sleep sequence config error\n");

		return err;
		}

		static int __init twl4030_config_warmreset_sequence(u8 address)
		{
		int err;
		u8 rd_data;

		/* Set WARM RESET SEQ address for P1 */
		err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, address,
		R_SEQ_ADD_WARM);
		if (err)
		goto out;

		/* P1/P2/P3 enable WARMRESET */
		err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &rd_data,
		R_P1_SW_EVENTS);
		if (err)
		goto out;

		rd_data \|= ENABLE_WARMRESET;
		err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, rd_data,
		R_P1_SW_EVENTS);
		if (err)
		goto out;

		err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &rd_data,
		R_P2_SW_EVENTS);
		if (err)
		goto out;

		rd_data \|= ENABLE_WARMRESET;
		err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, rd_data,
		R_P2_SW_EVENTS);
		if (err)
		goto out;

		err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &rd_data,
		R_P3_SW_EVENTS);
		if (err)
		goto out;

		rd_data \|= ENABLE_WARMRESET;
		err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, rd_data,
		R_P3_SW_EVENTS);
		out:
		if (err)
		pr_err("TWL4030 warmreset seq config error\n");
		return err;
		}

		static int __init twl4030_configure_resource(struct twl4030_resconfig *rconfig)
		{
		int rconfig_addr;
		int err;
		u8 type;
		u8 grp;

		if (rconfig->resource > TOTAL_RESOURCES) {
		pr_err("TWL4030 Resource %d does not exist\n",
		rconfig->resource);
		return -EINVAL;
		}

		rconfig_addr = res_config_addrs[rconfig->resource];

		/* Set resource group */
		err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_RECEIVER, &grp,
		rconfig_addr + DEVGROUP_OFFSET);
		if (err) {
		pr_err("TWL4030 Resource %d group could not be read\n",
		rconfig->resource);
		return err;
		}

		if (rconfig->devgroup >= 0) {
		grp &= ~DEVGROUP_MASK;
		grp \|= rconfig->devgroup << DEVGROUP_SHIFT;
		err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
		grp, rconfig_addr + DEVGROUP_OFFSET);
		if (err < 0) {
		pr_err("TWL4030 failed to program devgroup\n");
		return err;
		}
		}

		/* Set resource types */
		err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_RECEIVER, &type,
		rconfig_addr + TYPE_OFFSET);
		if (err < 0) {
		pr_err("TWL4030 Resource %d type could not be read\n",
		rconfig->resource);
		return err;
		}

		if (rconfig->type >= 0) {
		type &= ~TYPE_MASK;
		type \|= rconfig->type << TYPE_SHIFT;
		}

		if (rconfig->type2 >= 0) {
		type &= ~TYPE2_MASK;
		type \|= rconfig->type2 << TYPE2_SHIFT;
		}

		err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
		type, rconfig_addr + TYPE_OFFSET);
		if (err < 0) {
		pr_err("TWL4030 failed to program resource type\n");
		return err;
		}

		return 0;
		}

		static int __init load_twl4030_script(struct twl4030_script *tscript,
		u8 address)
		{
		int err;

		/* Make sure the script isn't going beyond last valid address (0x3f) */
		if ((address + tscript->size) > END_OF_SCRIPT) {
		pr_err("TWL4030 scripts too big error\n");
		return -EINVAL;
		}

		err = twl4030_write_script(address, tscript->script, tscript->size);
		if (err)
		goto out;

		if (tscript->flags & TWL4030_WRST_SCRIPT) {
		err = twl4030_config_warmreset_sequence(address);
		if (err)
		goto out;
		}
		if (tscript->flags & TWL4030_WAKEUP12_SCRIPT) {
		err = twl4030_config_wakeup12_sequence(address);
		if (err)
		goto out;
		}
		if (tscript->flags & TWL4030_WAKEUP3_SCRIPT) {
		err = twl4030_config_wakeup3_sequence(address);
		if (err)
		goto out;
		}
		if (tscript->flags & TWL4030_SLEEP_SCRIPT)
		err = twl4030_config_sleep_sequence(address);
		out:
		return err;
		}

		void __init twl4030_power_init(struct twl4030_power_data *twl4030_scripts)
		{
		int err = 0;
		int i;
		struct twl4030_resconfig *resconfig;
		u8 address = twl4030_start_script_address;

		err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, KEY_1,
		R_PROTECT_KEY);
		if (err)
		goto unlock;

		err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, KEY_2,
		R_PROTECT_KEY);
		if (err)
		goto unlock;

		for (i = 0; i < twl4030_scripts->num; i++) {
		err = load_twl4030_script(twl4030_scripts->scripts[i], address);
		if (err)
		goto load;
		address += twl4030_scripts->scripts[i]->size;
		}

		resconfig = twl4030_scripts->resource_config;
		if (resconfig) {
		while (resconfig->resource) {
		err = twl4030_configure_resource(resconfig);
		if (err)
		goto resource;
		resconfig++;

		}
		}

		err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0, R_PROTECT_KEY);
		if (err)
		pr_err("TWL4030 Unable to relock registers\n");
		return;

		unlock:
		if (err)
		pr_err("TWL4030 Unable to unlock registers\n");
		return;
		load:
		if (err)
		pr_err("TWL4030 failed to load scripts\n");
		return;
		resource:
		if (err)
		pr_err("TWL4030 failed to configure resource\n");
		return;
		}

include/linux/i2c/twl4030.h

+84 −10

Original line number	Diff line number	Diff line
		@@ -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);