diff options
author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/mfd/twl4030-power.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/mfd/twl4030-power.c')
-rw-r--r-- | kernel/drivers/mfd/twl4030-power.c | 948 |
1 files changed, 948 insertions, 0 deletions
diff --git a/kernel/drivers/mfd/twl4030-power.c b/kernel/drivers/mfd/twl4030-power.c new file mode 100644 index 000000000..f440aed61 --- /dev/null +++ b/kernel/drivers/mfd/twl4030-power.c @@ -0,0 +1,948 @@ +/* + * 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"); |