/*
* 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/twl.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <asm/mach-types.h>
static u8 twl4030_start_script_address = 0x2b;
/* Register bits for P1, P2 and P3_SW_EVENTS */
#define PWR_STOPON_PRWON BIT(6)
#define PWR_STOPON_SYSEN BIT(5)
#define PWR_ENABLE_WARMRESET BIT(4)
#define PWR_LVL_WAKEUP BIT(3)
#define PWR_DEVACT BIT(2)
#define PWR_DEVSLP BIT(1)
#define PWR_DEVOFF BIT(0)
/* Register bits for CFG_P1_TRANSITION (also for P2 and P3) */
#define STARTON_SWBUG BIT(7) /* Start on watchdog */
#define STARTON_VBUS BIT(5) /* Start on VBUS */
#define STARTON_VBAT BIT(4) /* Start on battery insert */
#define STARTON_RTC BIT(3) /* Start on RTC */
#define STARTON_USB BIT(2) /* Start on USB host */
#define STARTON_CHG BIT(1) /* Start on charger */
#define STARTON_PWON BIT(0) /* Start on PWRON button */
#define SEQ_OFFSYNC (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 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)
/* resource configuration registers
<RESOURCE>_DEV_GRP at address 'n+0'
<RESOURCE>_TYPE at address 'n+1'
<RESOURCE>_REMAP at address 'n+2'
<RESOURCE>_DEDICATED at address 'n+3'
*/
#define DEV_GRP_OFFSET 0
#define TYPE_OFFSET 1
#define REMAP_OFFSET 2
#define DEDICATED_OFFSET 3
/* Bit positions in the registers */
/* <RESOURCE>_DEV_GRP */
#define DEV_GRP_SHIFT 5
#define DEV_GRP_MASK (7 << DEV_GRP_SHIFT)
/* <RESOURCE>_TYPE */
#define TYPE_SHIFT 0
#define TYPE_MASK (7 << TYPE_SHIFT)
#define TYPE2_SHIFT 3
#define TYPE2_MASK (3 << TYPE2_SHIFT)
/* <RESOURCE>_REMAP */
#define SLEEP_STATE_SHIFT 0
#define SLEEP_STATE_MASK (0xf << SLEEP_STATE_SHIFT)
#define OFF_STATE_SHIFT 4
#define OFF_STATE_MASK (0xf << OFF_STATE_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,
};
/*
* Usable values for .remap_sleep and .remap_off
* Based on table "5.3.3 Resource Operating modes"
*/
enum {
TWL_REMAP_OFF = 0,
TWL_REMAP_SLEEP = 8,
TWL_REMAP_ACTIVE = 9,
};
/*
* Macros to configure the PM register states for various resources.
* Note that we can make MSG_SINGULAR etc private to this driver once
* omap3 has been made DT only.
*/
#define TWL_DFLT_DELAY 2 /* typically 2 32 KiHz cycles */
#define TWL_DEV_GRP_P123 (DEV_GRP_P1 | DEV_GRP_P2 | DEV_GRP_P3)
#define TWL_RESOURCE_SET(res, state) \
{ MSG_SINGULAR(DEV_GRP_NULL, (res), (state)), TWL_DFLT_DELAY }
#define TWL_RESOURCE_ON(res) TWL_RESOURCE_SET(res, RES_STATE_ACTIVE)
#define TWL_RESOURCE_OFF(res) TWL_RESOURCE_SET(res, RES_STATE_OFF)
#define TWL_RESOURCE_RESET(res) TWL_RESOURCE_SET(res, RES_STATE_WRST)
/*
* It seems that type1 and type2 is just the resource init order
* number for the type1 and type2 group.
*/
#define TWL_RESOURCE_SET_ACTIVE(res, state) \
{ MSG_SINGULAR(DEV_GRP_NULL, (res), RES_STATE_ACTIVE), (state) }
#define TWL_RESOURCE_GROUP_RESET(group, type1, type2) \
{ MSG_BROADCAST(DEV_GRP_NULL, (group), (type1), (type2), \
RES_STATE_WRST), TWL_DFLT_DELAY }
#define TWL_RESOURCE_GROUP_SLEEP(group, type, type2) \
{ MSG_BROADCAST(DEV_GRP_NULL, (group), (type), (type2), \
RES_STATE_SLEEP), TWL_DFLT_DELAY }
#define TWL_RESOURCE_GROUP_ACTIVE(group, type, type2) \
{ MSG_BROADCAST(DEV_GRP_NULL, (group), (type), (type2), \
RES_STATE_ACTIVE), TWL_DFLT_DELAY }
#define TWL_REMAP_SLEEP(res, devgrp, typ, typ2) \
{ .resource = (res), .devgroup = (devgrp), \
.type = (typ), .type2 = (typ2), \
.remap_off = TWL_REMAP_OFF, \
.remap_sleep = TWL_REMAP_SLEEP, }
#define TWL_REMAP_OFF(res, devgrp, typ, typ2) \
{ .resource = (res), .devgroup = (devgrp), \
.type = (typ), .type2 = (typ2), \
.remap_off = TWL_REMAP_OFF, .remap_sleep = TWL_REMAP_OFF, }
static int twl4030_write_script_byte(u8 address, u8 byte)
{
int err;
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_MEMORY_ADDRESS);
if (err)
goto out;
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, byte, R_MEMORY_DATA);
out:
return err;
}
static int 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 twl4030_write_script(u8 address, struct twl4030_ins *script,
int len)
{
int err = -EINVAL;
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 twl4030_config_wakeup3_sequence(u8 address)
{
int err;
u8 data;
/* Set SLEEP to ACTIVE SEQ address for P3 */
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_S2A3);
if (err)
goto out;
/* P3 LVL_WAKEUP should be on LEVEL */
err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data, R_P3_SW_EVENTS);
if (err)
goto out;
data |= PWR_LVL_WAKEUP;
err = twl_i2c_write_u8(TWL_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 twl4030_config_wakeup12_sequence(u8 address)
{
int err = 0;
u8 data;
/* Set SLEEP to ACTIVE SEQ address for P1 and P2 */
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_S2A12);
if (err)
goto out;
/* P1/P2 LVL_WAKEUP should be on LEVEL */
err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data, R_P1_SW_EVENTS);
if (err)
goto out;
data |= PWR_LVL_WAKEUP;
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, data, R_P1_SW_EVENTS);
if (err)
goto out;
err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data, R_P2_SW_EVENTS);
if (err)
goto out;
data |= PWR_LVL_WAKEUP;
err = twl_i2c_write_u8(TWL_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 = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data,
R_CFG_P1_TRANSITION);
if (err)
goto out;
data &= ~(1<<1);
err = twl_i2c_write_u8(TWL_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 twl4030_config_sleep_sequence(u8 address)
{
int err;
/* Set ACTIVE to SLEEP SEQ address in T2 memory*/
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_A2S);
if (err)
pr_err("TWL4030 sleep sequence config error\n");
return err;
}
static int twl4030_config_warmreset_sequence(u8 address)
{
int err;
u8 rd_data;
/* Set WARM RESET SEQ address for P1 */
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_WARM);
if (err)
goto out;
/* P1/P2/P3 enable WARMRESET */
err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &rd_data, R_P1_SW_EVENTS);
if (err)
goto out;
rd_data |= PWR_ENABLE_WARMRESET;
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, rd_data, R_P1_SW_EVENTS);
if (err)
goto out;
err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &rd_data, R_P2_SW_EVENTS);
if (err)
goto out;
rd_data |= PWR_ENABLE_WARMRESET;
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, rd_data, R_P2_SW_EVENTS);
if (err)
goto out;
err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &rd_data, R_P3_SW_EVENTS);
if (err)
goto out;
rd_data |= PWR_ENABLE_WARMRESET;
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, rd_data, R_P3_SW_EVENTS);
out:
if (err)
pr_err("TWL4030 warmreset seq config error\n");
return err;
}
static int twl4030_configure_resource(struct twl4030_resconfig *rconfig)
{
int rconfig_addr;
int err;
u8 type;
u8 grp;
u8 remap;
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 = twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &grp,
rconfig_addr + DEV_GRP_OFFSET);
if (err) {
pr_err("TWL4030 Resource %d group could not be read\n",
rconfig->resource);
return err;
}
if (rconfig->devgroup != TWL4030_RESCONFIG_UNDEF) {
grp &= ~DEV_GRP_MASK;
grp |= rconfig->devgroup << DEV_GRP_SHIFT;
err = twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER,
grp, rconfig_addr + DEV_GRP_OFFSET);
if (err < 0) {
pr_err("TWL4030 failed to program devgroup\n");
return err;
}
}
/* Set resource types */
err = twl_i2c_read_u8(TWL_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 != TWL4030_RESCONFIG_UNDEF) {
type &= ~TYPE_MASK;
type |= rconfig->type << TYPE_SHIFT;
}
if (rconfig->type2 != TWL4030_RESCONFIG_UNDEF) {
type &= ~TYPE2_MASK;
type |= rconfig->type2 << TYPE2_SHIFT;
}
err = twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER,
type, rconfig_addr + TYPE_OFFSET);
if (err < 0) {
pr_err("TWL4030 failed to program resource type\n");
return err;
}
/* Set remap states */
err = twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &remap,
rconfig_addr + REMAP_OFFSET);
if (err < 0) {
pr_err("TWL4030 Resource %d remap could not be read\n",
rconfig->resource);
return err;
}
if (rconfig->remap_off != TWL4030_RESCONFIG_UNDEF) {
remap &= ~OFF_STATE_MASK;
remap |= rconfig->remap_off << OFF_STATE_SHIFT;
}
if (rconfig->remap_sleep != TWL4030_RESCONFIG_UNDEF) {
remap &= ~SLEEP_STATE_MASK;
remap |= rconfig->remap_sleep << SLEEP_STATE_SHIFT;
}
err = twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER,
remap,
rconfig_addr + REMAP_OFFSET);
if (err < 0) {
pr_err("TWL4030 failed to program remap\n");
return err;
}
return 0;
}
static int load_twl4030_script(struct twl4030_script *tscript,
u8 address)
{
int err;
static int order;
/* 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) {
/* Reset any existing sleep script to avoid hangs on reboot */
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT,
R_SEQ_ADD_A2S);
if (err)
goto out;
err = twl4030_config_wakeup12_sequence(address);
if (err)
goto out;
order = 1;
}
if (tscript->flags & TWL4030_WAKEUP3_SCRIPT) {
err = twl4030_config_wakeup3_sequence(address);
if (err)
goto out;
}
if (tscript->flags & TWL4030_SLEEP_SCRIPT) {
if (!order)
pr_warning("TWL4030: Bad order of scripts (sleep "\
"script before wakeup) Leads to boot"\
"failure on some boards\n");
err = twl4030_config_sleep_sequence(address);
}
out:
return err;
}
int twl4030_remove_script(u8 flags)
{
int err = 0;
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1,
TWL4030_PM_MASTER_PROTECT_KEY);
if (err) {
pr_err("twl4030: unable to unlock PROTECT_KEY\n");
return err;
}
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG2,
TWL4030_PM_MASTER_PROTECT_KEY);
if (err) {
pr_err("twl4030: unable to unlock PROTECT_KEY\n");
return err;
}
if (flags & TWL4030_WRST_SCRIPT) {
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT,
R_SEQ_ADD_WARM);
if (err)
return err;
}
if (flags & TWL4030_WAKEUP12_SCRIPT) {
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT,
R_SEQ_ADD_S2A12);
if (err)
return err;
}
if (flags & TWL4030_WAKEUP3_SCRIPT) {
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT,
R_SEQ_ADD_S2A3);
if (err)
return err;
}
if (flags & TWL4030_SLEEP_SCRIPT) {
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT,
R_SEQ_ADD_A2S);
if (err)
return err;
}
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0,
TWL4030_PM_MASTER_PROTECT_KEY);
if (err)
pr_err("TWL4030 Unable to relock registers\n");
return err;
}
static int
twl4030_power_configure_scripts(const struct twl4030_power_data *pdata)
{
int err;
int i;
u8 address = twl4030_start_script_address;
for (i = 0; i < pdata->num; i++) {
err = load_twl4030_script(pdata->scripts[i], address);
if (err)
return err;
address += pdata->scripts[i]->size;
}
return 0;
}
static void twl4030_patch_rconfig(struct twl4030_resconfig *common,
struct twl4030_resconfig *board)
{
while (common->resource) {
struct twl4030_resconfig *b = board;
while (b->resource) {
if (b->resource == common->resource) {
*common = *b;
break;
}
b++;
}
common++;
}
}
static int
twl4030_power_configure_resources(const struct twl4030_power_data *pdata)
{
struct twl4030_resconfig *resconfig = pdata->resource_config;
struct twl4030_resconfig *boardconf = pdata->board_config;
int err;
if (resconfig) {
if (boardconf)
twl4030_patch_rconfig(resconfig, boardconf);
while (resconfig->resource) {
err = twl4030_configure_resource(resconfig);
if (err)
return err;
resconfig++;
}
}
return 0;
}
static int twl4030_starton_mask_and_set(u8 bitmask, u8 bitvalues)
{
u8 regs[3] = { TWL4030_PM_MASTER_CFG_P1_TRANSITION,
TWL4030_PM_MASTER_CFG_P2_TRANSITION,
TWL4030_PM_MASTER_CFG_P3_TRANSITION, };
u8 val;
int i, err;
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1,
TWL4030_PM_MASTER_PROTECT_KEY);
if (err)
goto relock;
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
TWL4030_PM_MASTER_KEY_CFG2,
TWL4030_PM_MASTER_PROTECT_KEY);
if (err)
goto relock;
for (i = 0; i < sizeof(regs); i++) {
err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER,
&val, regs[i]);
if (err)
break;
val = (~bitmask & val) | (bitmask & bitvalues);
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
val, regs[i]);
if (err)
break;
}
if (err)
pr_err("TWL4030 Register access failed: %i\n", err);
relock:
return twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0,
TWL4030_PM_MASTER_PROTECT_KEY);
}
/*
* In master mode, start the power off sequence.
* After a successful execution, TWL shuts down the power to the SoC
* and all peripherals connected to it.
*/
void twl4030_power_off(void)
{
int err;
/* Disable start on charger or VBUS as it can break poweroff */
err = twl4030_starton_mask_and_set(STARTON_VBUS | STARTON_CHG, 0);
if (err)
pr_err("TWL4030 Unable to configure start-up\n");
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, PWR_DEVOFF,
TWL4030_PM_MASTER_P1_SW_EVENTS);
if (err)
pr_err("TWL4030 Unable to power off\n");
}
static bool twl4030_power_use_poweroff(const struct twl4030_power_data *pdata,
struct device_node *node)
{
if (pdata && pdata->use_poweroff)
return true;
if (of_property_read_bool(node, "ti,system-power-controller"))
return true;
if (of_property_read_bool(node, "ti,use_poweroff"))
return true;
return false;
}
#ifdef CONFIG_OF
/* Generic warm reset configuration for omap3 */
static struct twl4030_ins omap3_wrst_seq[] = {
TWL_RESOURCE_OFF(RES_NRES_PWRON),
TWL_RESOURCE_OFF(RES_RESET),
TWL_RESOURCE_RESET(RES_MAIN_REF),
TWL_RESOURCE_GROUP_RESET(RES_GRP_ALL, RES_TYPE_R0, RES_TYPE2_R2),
TWL_RESOURCE_RESET(RES_VUSB_3V1),
TWL_RESOURCE_GROUP_RESET(RES_GRP_ALL, RES_TYPE_R0, RES_TYPE2_R1),
TWL_RESOURCE_GROUP_RESET(RES_GRP_RC, RES_TYPE_ALL, RES_TYPE2_R0),
TWL_RESOURCE_ON(RES_RESET),
TWL_RESOURCE_ON(RES_NRES_PWRON),
};
static struct twl4030_script omap3_wrst_script = {
.script = omap3_wrst_seq,
.size = ARRAY_SIZE(omap3_wrst_seq),
.flags = TWL4030_WRST_SCRIPT,
};
static struct twl4030_script *omap3_reset_scripts[] = {
&omap3_wrst_script,
};
static struct twl4030_resconfig omap3_rconfig[] = {
TWL_REMAP_SLEEP(RES_HFCLKOUT, DEV_GRP_P3, -1, -1),
TWL_REMAP_SLEEP(RES_VDD1, DEV_GRP_P1, -1, -1),
TWL_REMAP_SLEEP(RES_VDD2, DEV_GRP_P1, -1, -1),
{ 0, 0 },
};
static struct twl4030_power_data omap3_reset = {
.scripts = omap3_reset_scripts,
.num = ARRAY_SIZE(omap3_reset_scripts),
.resource_config = omap3_rconfig,
};
/* Recommended generic default idle configuration for off-idle */
/* Broadcast message to put res to sleep */
static struct twl4030_ins omap3_idle_sleep_on_seq[] = {
TWL_RESOURCE_GROUP_SLEEP(RES_GRP_ALL, RES_TYPE_ALL, 0),
};
static struct twl4030_script omap3_idle_sleep_on_script = {
.script = omap3_idle_sleep_on_seq,
.size = ARRAY_SIZE(omap3_idle_sleep_on_seq),
.flags = TWL4030_SLEEP_SCRIPT,
};
/* Broadcast message to put res to active */
static struct twl4030_ins omap3_idle_wakeup_p12_seq[] = {
TWL_RESOURCE_GROUP_ACTIVE(RES_GRP_ALL, RES_TYPE_ALL, 0),
};
static struct twl4030_script omap3_idle_wakeup_p12_script = {
.script = omap3_idle_wakeup_p12_seq,
.size = ARRAY_SIZE(omap3_idle_wakeup_p12_seq),
.flags = TWL4030_WAKEUP12_SCRIPT,
};
/* Broadcast message to put res to active */
static struct twl4030_ins omap3_idle_wakeup_p3_seq[] = {
TWL_RESOURCE_SET_ACTIVE(RES_CLKEN, 0x37),
TWL_RESOURCE_GROUP_ACTIVE(RES_GRP_ALL, RES_TYPE_ALL, 0),
};
static struct twl4030_script omap3_idle_wakeup_p3_script = {
.script = omap3_idle_wakeup_p3_seq,
.size = ARRAY_SIZE(omap3_idle_wakeup_p3_seq),
.flags = TWL4030_WAKEUP3_SCRIPT,
};
static struct twl4030_script *omap3_idle_scripts[] = {
&omap3_idle_wakeup_p12_script,
&omap3_idle_wakeup_p3_script,
&omap3_wrst_script,
&omap3_idle_sleep_on_script,
};
/*
* Recommended configuration based on "Recommended Sleep
* Sequences for the Zoom Platform":
* http://omappedia.com/wiki/File:Recommended_Sleep_Sequences_Zoom.pdf
* Note that the type1 and type2 seem to be just the init order number
* for type1 and type2 groups as specified in the document mentioned
* above.
*/
static struct twl4030_resconfig omap3_idle_rconfig[] = {
TWL_REMAP_SLEEP(RES_VAUX1, TWL4030_RESCONFIG_UNDEF, 0, 0),
TWL_REMAP_SLEEP(RES_VAUX2, TWL4030_RESCONFIG_UNDEF, 0, 0),
TWL_REMAP_SLEEP(RES_VAUX3, TWL4030_RESCONFIG_UNDEF, 0, 0),
TWL_REMAP_SLEEP(RES_VAUX4, TWL4030_RESCONFIG_UNDEF, 0, 0),
TWL_REMAP_SLEEP(RES_VMMC1, TWL4030_RESCONFIG_UNDEF, 0, 0),
TWL_REMAP_SLEEP(RES_VMMC2, TWL4030_RESCONFIG_UNDEF, 0, 0),
TWL_REMAP_OFF(RES_VPLL1, DEV_GRP_P1, 3, 1),
TWL_REMAP_SLEEP(RES_VPLL2, DEV_GRP_P1, 0, 0),
TWL_REMAP_SLEEP(RES_VSIM, TWL4030_RESCONFIG_UNDEF, 0, 0),
TWL_REMAP_SLEEP(RES_VDAC, TWL4030_RESCONFIG_UNDEF, 0, 0),
TWL_REMAP_SLEEP(RES_VINTANA1, TWL_DEV_GRP_P123, 1, 2),
TWL_REMAP_SLEEP(RES_VINTANA2, TWL_DEV_GRP_P123, 0, 2),
TWL_REMAP_SLEEP(RES_VINTDIG, TWL_DEV_GRP_P123, 1, 2),
TWL_REMAP_SLEEP(RES_VIO, TWL_DEV_GRP_P123, 2, 2),
TWL_REMAP_OFF(RES_VDD1, DEV_GRP_P1, 4, 1),
TWL_REMAP_OFF(RES_VDD2, DEV_GRP_P1, 3, 1),
TWL_REMAP_SLEEP(RES_VUSB_1V5, TWL4030_RESCONFIG_UNDEF, 0, 0),
TWL_REMAP_SLEEP(RES_VUSB_1V8, TWL4030_RESCONFIG_UNDEF, 0, 0),
TWL_REMAP_SLEEP(RES_VUSB_3V1, TWL_DEV_GRP_P123, 0, 0),
/* Resource #20 USB charge pump skipped */
TWL_REMAP_SLEEP(RES_REGEN, TWL_DEV_GRP_P123, 2, 1),
TWL_REMAP_SLEEP(RES_NRES_PWRON, TWL_DEV_GRP_P123, 0, 1),
TWL_REMAP_SLEEP(RES_CLKEN, TWL_DEV_GRP_P123, 3, 2),
TWL_REMAP_SLEEP(RES_SYSEN, TWL_DEV_GRP_P123, 6, 1),
TWL_REMAP_SLEEP(RES_HFCLKOUT, DEV_GRP_P3, 0, 2),
TWL_REMAP_SLEEP(RES_32KCLKOUT, TWL_DEV_GRP_P123, 0, 0),
TWL_REMAP_SLEEP(RES_RESET, TWL_DEV_GRP_P123, 6, 0),
TWL_REMAP_SLEEP(RES_MAIN_REF, TWL_DEV_GRP_P123, 0, 0),
{ /* Terminator */ },
};
static struct twl4030_power_data omap3_idle = {
.scripts = omap3_idle_scripts,
.num = ARRAY_SIZE(omap3_idle_scripts),
.resource_config = omap3_idle_rconfig,
};
/* Disable 32 KiHz oscillator during idle */
static struct twl4030_resconfig osc_off_rconfig[] = {
TWL_REMAP_OFF(RES_CLKEN, DEV_GRP_P1 | DEV_GRP_P3, 3, 2),
{ /* Terminator */ },
};
static struct twl4030_power_data osc_off_idle = {
.scripts = omap3_idle_scripts,
.num = ARRAY_SIZE(omap3_idle_scripts),
.resource_config = omap3_idle_rconfig,
.board_config = osc_off_rconfig,
};
static const struct of_device_id twl4030_power_of_match[] = {
{
.compatible = "ti,twl4030-power",
},
{
.compatible = "ti,twl4030-power-reset",
.data = &omap3_reset,
},
{
.compatible = "ti,twl4030-power-idle",
.data = &omap3_idle,
},
{
.compatible = "ti,twl4030-power-idle-osc-off",
.data = &osc_off_idle,
},
{ },
};
MODULE_DEVICE_TABLE(of, twl4030_power_of_match);
#endif /* CONFIG_OF */
static int twl4030_power_probe(struct platform_device *pdev)
{
const struct twl4030_power_data *pdata = dev_get_platdata(&pdev->dev);
struct device_node *node = pdev->dev.of_node;
const struct of_device_id *match;
int err = 0;
int err2 = 0;
u8 val;
if (!pdata && !node) {
dev_err(&pdev->dev, "Platform data is missing\n");
return -EINVAL;
}
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1,
TWL4030_PM_MASTER_PROTECT_KEY);
err |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
TWL4030_PM_MASTER_KEY_CFG2,
TWL4030_PM_MASTER_PROTECT_KEY);
if (err) {
pr_err("TWL4030 Unable to unlock registers\n");
return err;
}
match = of_match_device(of_match_ptr(twl4030_power_of_match),
&pdev->dev);
if (match && match->data)
pdata = match->data;
if (pdata) {
err = twl4030_power_configure_scripts(pdata);
if (err) {
pr_err("TWL4030 failed to load scripts\n");
goto relock;
}
err = twl4030_power_configure_resources(pdata);
if (err) {
pr_err("TWL4030 failed to configure resource\n");
goto relock;
}
}
/* Board has to be wired properly to use this feature */
if (twl4030_power_use_poweroff(pdata, node) && !pm_power_off) {
/* Default for SEQ_OFFSYNC is set, lets ensure this */
err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &val,
TWL4030_PM_MASTER_CFG_P123_TRANSITION);
if (err) {
pr_warning("TWL4030 Unable to read registers\n");
} else if (!(val & SEQ_OFFSYNC)) {
val |= SEQ_OFFSYNC;
err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, val,
TWL4030_PM_MASTER_CFG_P123_TRANSITION);
if (err) {
pr_err("TWL4030 Unable to setup SEQ_OFFSYNC\n");
goto relock;
}
}
pm_power_off = twl4030_power_off;
}
relock:
err2 = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0,
TWL4030_PM_MASTER_PROTECT_KEY);
if (err2) {
pr_err("TWL4030 Unable to relock registers\n");
return err2;
}
return err;
}
static int twl4030_power_remove(struct platform_device *pdev)
{
return 0;
}
static struct platform_driver twl4030_power_driver = {
.driver = {
.name = "twl4030_power",
.of_match_table = of_match_ptr(twl4030_power_of_match),
},
.probe = twl4030_power_probe,
.remove = twl4030_power_remove,
};
module_platform_driver(twl4030_power_driver);
MODULE_AUTHOR("Nokia Corporation");
MODULE_AUTHOR("Texas Instruments, Inc.");
MODULE_DESCRIPTION("Power management for TWL4030");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:twl4030_power");