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linux_dsm_epyc7002/drivers/mfd/twl4030-power.c
Tony Lindgren daebabd578 mfd: twl4030-power: Fix PM idle pin configuration to not conflict with regulators 
Commit 43fef47f94 (mfd: twl4030-power: Add a configuration to turn
off oscillator during off-idle) added support for configuring the PMIC
to cut off resources during deeper idle states to save power.

This however caused regression for n900 display power that needed the
PMIC configuration to be disabled with commit d937678ab6 (ARM: dts:
Revert enabling of twl configuration for n900).

Turns out the root cause of the problem is that we must use
TWL4030_RESCONFIG_UNDEF instead of DEV_GRP_NULL to avoid disabling
regulators that may have been enabled before the init function
for twl4030-power.c runs. With TWL4030_RESCONFIG_UNDEF we let the
regulator framework control the regulators like it should. Here we
need to only configure the sys_clken and sys_off_mode triggers for
the regulators that cannot be done by the regulator framework as
it's not running at that point.

This allows us to enable the PMIC configuration for n900.

Fixes: 43fef47f94 (mfd: twl4030-power: Add a configuration to turn off oscillator during off-idle)

Cc: stable@vger.kernel.org # v3.16
Signed-off-by: Tony Lindgren <tony@atomide.com>
Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-08-28 15:57:55 +01:00

892 lines
23 KiB
C
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/*
* 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)
#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;
}
/*
* 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;
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,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 struct of_device_id twl4030_power_of_match[] = {
{
.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",
.owner = THIS_MODULE,
.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");
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