1ebf0bd36SAmit Kucheria /* 2ebf0bd36SAmit Kucheria * linux/drivers/i2c/chips/twl4030-power.c 3ebf0bd36SAmit Kucheria * 4ebf0bd36SAmit Kucheria * Handle TWL4030 Power initialization 5ebf0bd36SAmit Kucheria * 6ebf0bd36SAmit Kucheria * Copyright (C) 2008 Nokia Corporation 7ebf0bd36SAmit Kucheria * Copyright (C) 2006 Texas Instruments, Inc 8ebf0bd36SAmit Kucheria * 9ebf0bd36SAmit Kucheria * Written by Kalle Jokiniemi 10ebf0bd36SAmit Kucheria * Peter De Schrijver <peter.de-schrijver@nokia.com> 11ebf0bd36SAmit Kucheria * Several fixes by Amit Kucheria <amit.kucheria@verdurent.com> 12ebf0bd36SAmit Kucheria * 13ebf0bd36SAmit Kucheria * This file is subject to the terms and conditions of the GNU General 14ebf0bd36SAmit Kucheria * Public License. See the file "COPYING" in the main directory of this 15ebf0bd36SAmit Kucheria * archive for more details. 16ebf0bd36SAmit Kucheria * 17ebf0bd36SAmit Kucheria * This program is distributed in the hope that it will be useful, 18ebf0bd36SAmit Kucheria * but WITHOUT ANY WARRANTY; without even the implied warranty of 19ebf0bd36SAmit Kucheria * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20ebf0bd36SAmit Kucheria * GNU General Public License for more details. 21ebf0bd36SAmit Kucheria * 22ebf0bd36SAmit Kucheria * You should have received a copy of the GNU General Public License 23ebf0bd36SAmit Kucheria * along with this program; if not, write to the Free Software 24ebf0bd36SAmit Kucheria * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 25ebf0bd36SAmit Kucheria */ 26ebf0bd36SAmit Kucheria 27ebf0bd36SAmit Kucheria #include <linux/module.h> 28ebf0bd36SAmit Kucheria #include <linux/pm.h> 29b07682b6SSantosh Shilimkar #include <linux/i2c/twl.h> 30ebf0bd36SAmit Kucheria #include <linux/platform_device.h> 31b0fc1da4SFlorian Vaussard #include <linux/of.h> 32ebf0bd36SAmit Kucheria 33ebf0bd36SAmit Kucheria #include <asm/mach-types.h> 34ebf0bd36SAmit Kucheria 35ebf0bd36SAmit Kucheria static u8 twl4030_start_script_address = 0x2b; 36ebf0bd36SAmit Kucheria 37ebf0bd36SAmit Kucheria #define PWR_P1_SW_EVENTS 0x10 38ebf0bd36SAmit Kucheria #define PWR_DEVOFF (1 << 0) 3926cc3ab9SIgor Grinberg #define SEQ_OFFSYNC (1 << 0) 40ebf0bd36SAmit Kucheria 41ebf0bd36SAmit Kucheria #define PHY_TO_OFF_PM_MASTER(p) (p - 0x36) 42ebf0bd36SAmit Kucheria #define PHY_TO_OFF_PM_RECEIVER(p) (p - 0x5b) 43ebf0bd36SAmit Kucheria 44ebf0bd36SAmit Kucheria /* resource - hfclk */ 45ebf0bd36SAmit Kucheria #define R_HFCLKOUT_DEV_GRP PHY_TO_OFF_PM_RECEIVER(0xe6) 46ebf0bd36SAmit Kucheria 47ebf0bd36SAmit Kucheria /* PM events */ 48ebf0bd36SAmit Kucheria #define R_P1_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x46) 49ebf0bd36SAmit Kucheria #define R_P2_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x47) 50ebf0bd36SAmit Kucheria #define R_P3_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x48) 51ebf0bd36SAmit Kucheria #define R_CFG_P1_TRANSITION PHY_TO_OFF_PM_MASTER(0x36) 52ebf0bd36SAmit Kucheria #define R_CFG_P2_TRANSITION PHY_TO_OFF_PM_MASTER(0x37) 53ebf0bd36SAmit Kucheria #define R_CFG_P3_TRANSITION PHY_TO_OFF_PM_MASTER(0x38) 54ebf0bd36SAmit Kucheria 55ebf0bd36SAmit Kucheria #define LVL_WAKEUP 0x08 56ebf0bd36SAmit Kucheria 57ebf0bd36SAmit Kucheria #define ENABLE_WARMRESET (1<<4) 58ebf0bd36SAmit Kucheria 59ebf0bd36SAmit Kucheria #define END_OF_SCRIPT 0x3f 60ebf0bd36SAmit Kucheria 61ebf0bd36SAmit Kucheria #define R_SEQ_ADD_A2S PHY_TO_OFF_PM_MASTER(0x55) 62ebf0bd36SAmit Kucheria #define R_SEQ_ADD_S2A12 PHY_TO_OFF_PM_MASTER(0x56) 63ebf0bd36SAmit Kucheria #define R_SEQ_ADD_S2A3 PHY_TO_OFF_PM_MASTER(0x57) 64ebf0bd36SAmit Kucheria #define R_SEQ_ADD_WARM PHY_TO_OFF_PM_MASTER(0x58) 65ebf0bd36SAmit Kucheria #define R_MEMORY_ADDRESS PHY_TO_OFF_PM_MASTER(0x59) 66ebf0bd36SAmit Kucheria #define R_MEMORY_DATA PHY_TO_OFF_PM_MASTER(0x5a) 67ebf0bd36SAmit Kucheria 68890463f0SAmit Kucheria /* resource configuration registers 69890463f0SAmit Kucheria <RESOURCE>_DEV_GRP at address 'n+0' 70890463f0SAmit Kucheria <RESOURCE>_TYPE at address 'n+1' 71890463f0SAmit Kucheria <RESOURCE>_REMAP at address 'n+2' 72890463f0SAmit Kucheria <RESOURCE>_DEDICATED at address 'n+3' 73890463f0SAmit Kucheria */ 74e97d1546SAmit Kucheria #define DEV_GRP_OFFSET 0 75ebf0bd36SAmit Kucheria #define TYPE_OFFSET 1 76b4ead61eSAmit Kucheria #define REMAP_OFFSET 2 77b4ead61eSAmit Kucheria #define DEDICATED_OFFSET 3 78ebf0bd36SAmit Kucheria 79e97d1546SAmit Kucheria /* Bit positions in the registers */ 80890463f0SAmit Kucheria 81890463f0SAmit Kucheria /* <RESOURCE>_DEV_GRP */ 82e97d1546SAmit Kucheria #define DEV_GRP_SHIFT 5 83e97d1546SAmit Kucheria #define DEV_GRP_MASK (7 << DEV_GRP_SHIFT) 84890463f0SAmit Kucheria 85890463f0SAmit Kucheria /* <RESOURCE>_TYPE */ 86ebf0bd36SAmit Kucheria #define TYPE_SHIFT 0 87ebf0bd36SAmit Kucheria #define TYPE_MASK (7 << TYPE_SHIFT) 88ebf0bd36SAmit Kucheria #define TYPE2_SHIFT 3 89ebf0bd36SAmit Kucheria #define TYPE2_MASK (3 << TYPE2_SHIFT) 90ebf0bd36SAmit Kucheria 91b4ead61eSAmit Kucheria /* <RESOURCE>_REMAP */ 92b4ead61eSAmit Kucheria #define SLEEP_STATE_SHIFT 0 93b4ead61eSAmit Kucheria #define SLEEP_STATE_MASK (0xf << SLEEP_STATE_SHIFT) 94b4ead61eSAmit Kucheria #define OFF_STATE_SHIFT 4 95b4ead61eSAmit Kucheria #define OFF_STATE_MASK (0xf << OFF_STATE_SHIFT) 96b4ead61eSAmit Kucheria 97ebf0bd36SAmit Kucheria static u8 res_config_addrs[] = { 98ebf0bd36SAmit Kucheria [RES_VAUX1] = 0x17, 99ebf0bd36SAmit Kucheria [RES_VAUX2] = 0x1b, 100ebf0bd36SAmit Kucheria [RES_VAUX3] = 0x1f, 101ebf0bd36SAmit Kucheria [RES_VAUX4] = 0x23, 102ebf0bd36SAmit Kucheria [RES_VMMC1] = 0x27, 103ebf0bd36SAmit Kucheria [RES_VMMC2] = 0x2b, 104ebf0bd36SAmit Kucheria [RES_VPLL1] = 0x2f, 105ebf0bd36SAmit Kucheria [RES_VPLL2] = 0x33, 106ebf0bd36SAmit Kucheria [RES_VSIM] = 0x37, 107ebf0bd36SAmit Kucheria [RES_VDAC] = 0x3b, 108ebf0bd36SAmit Kucheria [RES_VINTANA1] = 0x3f, 109ebf0bd36SAmit Kucheria [RES_VINTANA2] = 0x43, 110ebf0bd36SAmit Kucheria [RES_VINTDIG] = 0x47, 111ebf0bd36SAmit Kucheria [RES_VIO] = 0x4b, 112ebf0bd36SAmit Kucheria [RES_VDD1] = 0x55, 113ebf0bd36SAmit Kucheria [RES_VDD2] = 0x63, 114ebf0bd36SAmit Kucheria [RES_VUSB_1V5] = 0x71, 115ebf0bd36SAmit Kucheria [RES_VUSB_1V8] = 0x74, 116ebf0bd36SAmit Kucheria [RES_VUSB_3V1] = 0x77, 117ebf0bd36SAmit Kucheria [RES_VUSBCP] = 0x7a, 118ebf0bd36SAmit Kucheria [RES_REGEN] = 0x7f, 119ebf0bd36SAmit Kucheria [RES_NRES_PWRON] = 0x82, 120ebf0bd36SAmit Kucheria [RES_CLKEN] = 0x85, 121ebf0bd36SAmit Kucheria [RES_SYSEN] = 0x88, 122ebf0bd36SAmit Kucheria [RES_HFCLKOUT] = 0x8b, 123ebf0bd36SAmit Kucheria [RES_32KCLKOUT] = 0x8e, 124ebf0bd36SAmit Kucheria [RES_RESET] = 0x91, 125d7ac829fSLesly A M [RES_MAIN_REF] = 0x94, 126ebf0bd36SAmit Kucheria }; 127ebf0bd36SAmit Kucheria 128f791be49SBill Pemberton static int twl4030_write_script_byte(u8 address, u8 byte) 129ebf0bd36SAmit Kucheria { 130ebf0bd36SAmit Kucheria int err; 131ebf0bd36SAmit Kucheria 1324850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_MEMORY_ADDRESS); 133ebf0bd36SAmit Kucheria if (err) 134ebf0bd36SAmit Kucheria goto out; 1354850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, byte, R_MEMORY_DATA); 136ebf0bd36SAmit Kucheria out: 137ebf0bd36SAmit Kucheria return err; 138ebf0bd36SAmit Kucheria } 139ebf0bd36SAmit Kucheria 140f791be49SBill Pemberton static int twl4030_write_script_ins(u8 address, u16 pmb_message, 141ebf0bd36SAmit Kucheria u8 delay, u8 next) 142ebf0bd36SAmit Kucheria { 143ebf0bd36SAmit Kucheria int err; 144ebf0bd36SAmit Kucheria 145ebf0bd36SAmit Kucheria address *= 4; 146ebf0bd36SAmit Kucheria err = twl4030_write_script_byte(address++, pmb_message >> 8); 147ebf0bd36SAmit Kucheria if (err) 148ebf0bd36SAmit Kucheria goto out; 149ebf0bd36SAmit Kucheria err = twl4030_write_script_byte(address++, pmb_message & 0xff); 150ebf0bd36SAmit Kucheria if (err) 151ebf0bd36SAmit Kucheria goto out; 152ebf0bd36SAmit Kucheria err = twl4030_write_script_byte(address++, delay); 153ebf0bd36SAmit Kucheria if (err) 154ebf0bd36SAmit Kucheria goto out; 155ebf0bd36SAmit Kucheria err = twl4030_write_script_byte(address++, next); 156ebf0bd36SAmit Kucheria out: 157ebf0bd36SAmit Kucheria return err; 158ebf0bd36SAmit Kucheria } 159ebf0bd36SAmit Kucheria 160f791be49SBill Pemberton static int twl4030_write_script(u8 address, struct twl4030_ins *script, 161ebf0bd36SAmit Kucheria int len) 162ebf0bd36SAmit Kucheria { 163f65e9eacSArnd Bergmann int err = -EINVAL; 164ebf0bd36SAmit Kucheria 165ebf0bd36SAmit Kucheria for (; len; len--, address++, script++) { 166ebf0bd36SAmit Kucheria if (len == 1) { 167ebf0bd36SAmit Kucheria err = twl4030_write_script_ins(address, 168ebf0bd36SAmit Kucheria script->pmb_message, 169ebf0bd36SAmit Kucheria script->delay, 170ebf0bd36SAmit Kucheria END_OF_SCRIPT); 171ebf0bd36SAmit Kucheria if (err) 172ebf0bd36SAmit Kucheria break; 173ebf0bd36SAmit Kucheria } else { 174ebf0bd36SAmit Kucheria err = twl4030_write_script_ins(address, 175ebf0bd36SAmit Kucheria script->pmb_message, 176ebf0bd36SAmit Kucheria script->delay, 177ebf0bd36SAmit Kucheria address + 1); 178ebf0bd36SAmit Kucheria if (err) 179ebf0bd36SAmit Kucheria break; 180ebf0bd36SAmit Kucheria } 181ebf0bd36SAmit Kucheria } 182ebf0bd36SAmit Kucheria return err; 183ebf0bd36SAmit Kucheria } 184ebf0bd36SAmit Kucheria 185f791be49SBill Pemberton static int twl4030_config_wakeup3_sequence(u8 address) 186ebf0bd36SAmit Kucheria { 187ebf0bd36SAmit Kucheria int err; 188ebf0bd36SAmit Kucheria u8 data; 189ebf0bd36SAmit Kucheria 190ebf0bd36SAmit Kucheria /* Set SLEEP to ACTIVE SEQ address for P3 */ 1914850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_S2A3); 192ebf0bd36SAmit Kucheria if (err) 193ebf0bd36SAmit Kucheria goto out; 194ebf0bd36SAmit Kucheria 195ebf0bd36SAmit Kucheria /* P3 LVL_WAKEUP should be on LEVEL */ 1964850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data, R_P3_SW_EVENTS); 197ebf0bd36SAmit Kucheria if (err) 198ebf0bd36SAmit Kucheria goto out; 199ebf0bd36SAmit Kucheria data |= LVL_WAKEUP; 2004850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, data, R_P3_SW_EVENTS); 201ebf0bd36SAmit Kucheria out: 202ebf0bd36SAmit Kucheria if (err) 203ebf0bd36SAmit Kucheria pr_err("TWL4030 wakeup sequence for P3 config error\n"); 204ebf0bd36SAmit Kucheria return err; 205ebf0bd36SAmit Kucheria } 206ebf0bd36SAmit Kucheria 207f791be49SBill Pemberton static int twl4030_config_wakeup12_sequence(u8 address) 208ebf0bd36SAmit Kucheria { 209ebf0bd36SAmit Kucheria int err = 0; 210ebf0bd36SAmit Kucheria u8 data; 211ebf0bd36SAmit Kucheria 212ebf0bd36SAmit Kucheria /* Set SLEEP to ACTIVE SEQ address for P1 and P2 */ 2134850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_S2A12); 214ebf0bd36SAmit Kucheria if (err) 215ebf0bd36SAmit Kucheria goto out; 216ebf0bd36SAmit Kucheria 217ebf0bd36SAmit Kucheria /* P1/P2 LVL_WAKEUP should be on LEVEL */ 2184850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data, R_P1_SW_EVENTS); 219ebf0bd36SAmit Kucheria if (err) 220ebf0bd36SAmit Kucheria goto out; 221ebf0bd36SAmit Kucheria 222ebf0bd36SAmit Kucheria data |= LVL_WAKEUP; 2234850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, data, R_P1_SW_EVENTS); 224ebf0bd36SAmit Kucheria if (err) 225ebf0bd36SAmit Kucheria goto out; 226ebf0bd36SAmit Kucheria 2274850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data, R_P2_SW_EVENTS); 228ebf0bd36SAmit Kucheria if (err) 229ebf0bd36SAmit Kucheria goto out; 230ebf0bd36SAmit Kucheria 231ebf0bd36SAmit Kucheria data |= LVL_WAKEUP; 2324850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, data, R_P2_SW_EVENTS); 233ebf0bd36SAmit Kucheria if (err) 234ebf0bd36SAmit Kucheria goto out; 235ebf0bd36SAmit Kucheria 236ebf0bd36SAmit Kucheria if (machine_is_omap_3430sdp() || machine_is_omap_ldp()) { 237ebf0bd36SAmit Kucheria /* Disabling AC charger effect on sleep-active transitions */ 2384850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data, 239ebf0bd36SAmit Kucheria R_CFG_P1_TRANSITION); 240ebf0bd36SAmit Kucheria if (err) 241ebf0bd36SAmit Kucheria goto out; 242ebf0bd36SAmit Kucheria data &= ~(1<<1); 2434850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, data, 244ebf0bd36SAmit Kucheria R_CFG_P1_TRANSITION); 245ebf0bd36SAmit Kucheria if (err) 246ebf0bd36SAmit Kucheria goto out; 247ebf0bd36SAmit Kucheria } 248ebf0bd36SAmit Kucheria 249ebf0bd36SAmit Kucheria out: 250ebf0bd36SAmit Kucheria if (err) 251ebf0bd36SAmit Kucheria pr_err("TWL4030 wakeup sequence for P1 and P2" \ 252ebf0bd36SAmit Kucheria "config error\n"); 253ebf0bd36SAmit Kucheria return err; 254ebf0bd36SAmit Kucheria } 255ebf0bd36SAmit Kucheria 256f791be49SBill Pemberton static int twl4030_config_sleep_sequence(u8 address) 257ebf0bd36SAmit Kucheria { 258ebf0bd36SAmit Kucheria int err; 259ebf0bd36SAmit Kucheria 260ebf0bd36SAmit Kucheria /* Set ACTIVE to SLEEP SEQ address in T2 memory*/ 2614850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_A2S); 262ebf0bd36SAmit Kucheria 263ebf0bd36SAmit Kucheria if (err) 264ebf0bd36SAmit Kucheria pr_err("TWL4030 sleep sequence config error\n"); 265ebf0bd36SAmit Kucheria 266ebf0bd36SAmit Kucheria return err; 267ebf0bd36SAmit Kucheria } 268ebf0bd36SAmit Kucheria 269f791be49SBill Pemberton static int twl4030_config_warmreset_sequence(u8 address) 270ebf0bd36SAmit Kucheria { 271ebf0bd36SAmit Kucheria int err; 272ebf0bd36SAmit Kucheria u8 rd_data; 273ebf0bd36SAmit Kucheria 274ebf0bd36SAmit Kucheria /* Set WARM RESET SEQ address for P1 */ 2754850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_WARM); 276ebf0bd36SAmit Kucheria if (err) 277ebf0bd36SAmit Kucheria goto out; 278ebf0bd36SAmit Kucheria 279ebf0bd36SAmit Kucheria /* P1/P2/P3 enable WARMRESET */ 2804850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &rd_data, R_P1_SW_EVENTS); 281ebf0bd36SAmit Kucheria if (err) 282ebf0bd36SAmit Kucheria goto out; 283ebf0bd36SAmit Kucheria 284ebf0bd36SAmit Kucheria rd_data |= ENABLE_WARMRESET; 2854850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, rd_data, R_P1_SW_EVENTS); 286ebf0bd36SAmit Kucheria if (err) 287ebf0bd36SAmit Kucheria goto out; 288ebf0bd36SAmit Kucheria 2894850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &rd_data, R_P2_SW_EVENTS); 290ebf0bd36SAmit Kucheria if (err) 291ebf0bd36SAmit Kucheria goto out; 292ebf0bd36SAmit Kucheria 293ebf0bd36SAmit Kucheria rd_data |= ENABLE_WARMRESET; 2944850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, rd_data, R_P2_SW_EVENTS); 295ebf0bd36SAmit Kucheria if (err) 296ebf0bd36SAmit Kucheria goto out; 297ebf0bd36SAmit Kucheria 2984850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &rd_data, R_P3_SW_EVENTS); 299ebf0bd36SAmit Kucheria if (err) 300ebf0bd36SAmit Kucheria goto out; 301ebf0bd36SAmit Kucheria 302ebf0bd36SAmit Kucheria rd_data |= ENABLE_WARMRESET; 3034850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, rd_data, R_P3_SW_EVENTS); 304ebf0bd36SAmit Kucheria out: 305ebf0bd36SAmit Kucheria if (err) 306ebf0bd36SAmit Kucheria pr_err("TWL4030 warmreset seq config error\n"); 307ebf0bd36SAmit Kucheria return err; 308ebf0bd36SAmit Kucheria } 309ebf0bd36SAmit Kucheria 310f791be49SBill Pemberton static int twl4030_configure_resource(struct twl4030_resconfig *rconfig) 311ebf0bd36SAmit Kucheria { 312ebf0bd36SAmit Kucheria int rconfig_addr; 313ebf0bd36SAmit Kucheria int err; 314ebf0bd36SAmit Kucheria u8 type; 315ebf0bd36SAmit Kucheria u8 grp; 316b4ead61eSAmit Kucheria u8 remap; 317ebf0bd36SAmit Kucheria 318ebf0bd36SAmit Kucheria if (rconfig->resource > TOTAL_RESOURCES) { 319ebf0bd36SAmit Kucheria pr_err("TWL4030 Resource %d does not exist\n", 320ebf0bd36SAmit Kucheria rconfig->resource); 321ebf0bd36SAmit Kucheria return -EINVAL; 322ebf0bd36SAmit Kucheria } 323ebf0bd36SAmit Kucheria 324ebf0bd36SAmit Kucheria rconfig_addr = res_config_addrs[rconfig->resource]; 325ebf0bd36SAmit Kucheria 326ebf0bd36SAmit Kucheria /* Set resource group */ 3274850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &grp, 328e97d1546SAmit Kucheria rconfig_addr + DEV_GRP_OFFSET); 329ebf0bd36SAmit Kucheria if (err) { 330ebf0bd36SAmit Kucheria pr_err("TWL4030 Resource %d group could not be read\n", 331ebf0bd36SAmit Kucheria rconfig->resource); 332ebf0bd36SAmit Kucheria return err; 333ebf0bd36SAmit Kucheria } 334ebf0bd36SAmit Kucheria 33556baa667SAaro Koskinen if (rconfig->devgroup != TWL4030_RESCONFIG_UNDEF) { 336e97d1546SAmit Kucheria grp &= ~DEV_GRP_MASK; 337e97d1546SAmit Kucheria grp |= rconfig->devgroup << DEV_GRP_SHIFT; 3384850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 339e97d1546SAmit Kucheria grp, rconfig_addr + DEV_GRP_OFFSET); 340ebf0bd36SAmit Kucheria if (err < 0) { 341ebf0bd36SAmit Kucheria pr_err("TWL4030 failed to program devgroup\n"); 342ebf0bd36SAmit Kucheria return err; 343ebf0bd36SAmit Kucheria } 344ebf0bd36SAmit Kucheria } 345ebf0bd36SAmit Kucheria 346ebf0bd36SAmit Kucheria /* Set resource types */ 3474850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &type, 348ebf0bd36SAmit Kucheria rconfig_addr + TYPE_OFFSET); 349ebf0bd36SAmit Kucheria if (err < 0) { 350ebf0bd36SAmit Kucheria pr_err("TWL4030 Resource %d type could not be read\n", 351ebf0bd36SAmit Kucheria rconfig->resource); 352ebf0bd36SAmit Kucheria return err; 353ebf0bd36SAmit Kucheria } 354ebf0bd36SAmit Kucheria 35556baa667SAaro Koskinen if (rconfig->type != TWL4030_RESCONFIG_UNDEF) { 356ebf0bd36SAmit Kucheria type &= ~TYPE_MASK; 357ebf0bd36SAmit Kucheria type |= rconfig->type << TYPE_SHIFT; 358ebf0bd36SAmit Kucheria } 359ebf0bd36SAmit Kucheria 36056baa667SAaro Koskinen if (rconfig->type2 != TWL4030_RESCONFIG_UNDEF) { 361ebf0bd36SAmit Kucheria type &= ~TYPE2_MASK; 362ebf0bd36SAmit Kucheria type |= rconfig->type2 << TYPE2_SHIFT; 363ebf0bd36SAmit Kucheria } 364ebf0bd36SAmit Kucheria 3654850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 366ebf0bd36SAmit Kucheria type, rconfig_addr + TYPE_OFFSET); 367ebf0bd36SAmit Kucheria if (err < 0) { 368ebf0bd36SAmit Kucheria pr_err("TWL4030 failed to program resource type\n"); 369ebf0bd36SAmit Kucheria return err; 370ebf0bd36SAmit Kucheria } 371ebf0bd36SAmit Kucheria 372b4ead61eSAmit Kucheria /* Set remap states */ 3734850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &remap, 374b4ead61eSAmit Kucheria rconfig_addr + REMAP_OFFSET); 375b4ead61eSAmit Kucheria if (err < 0) { 376b4ead61eSAmit Kucheria pr_err("TWL4030 Resource %d remap could not be read\n", 377b4ead61eSAmit Kucheria rconfig->resource); 378b4ead61eSAmit Kucheria return err; 379b4ead61eSAmit Kucheria } 380b4ead61eSAmit Kucheria 38153cf9a60SAmit Kucheria if (rconfig->remap_off != TWL4030_RESCONFIG_UNDEF) { 382b4ead61eSAmit Kucheria remap &= ~OFF_STATE_MASK; 383b4ead61eSAmit Kucheria remap |= rconfig->remap_off << OFF_STATE_SHIFT; 384b4ead61eSAmit Kucheria } 385b4ead61eSAmit Kucheria 38653cf9a60SAmit Kucheria if (rconfig->remap_sleep != TWL4030_RESCONFIG_UNDEF) { 387b4ead61eSAmit Kucheria remap &= ~SLEEP_STATE_MASK; 3881ea933f4SMike Turquette remap |= rconfig->remap_sleep << SLEEP_STATE_SHIFT; 389b4ead61eSAmit Kucheria } 390b4ead61eSAmit Kucheria 3914850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 392b4ead61eSAmit Kucheria remap, 393b4ead61eSAmit Kucheria rconfig_addr + REMAP_OFFSET); 394b4ead61eSAmit Kucheria if (err < 0) { 395b4ead61eSAmit Kucheria pr_err("TWL4030 failed to program remap\n"); 396b4ead61eSAmit Kucheria return err; 397b4ead61eSAmit Kucheria } 398b4ead61eSAmit Kucheria 399ebf0bd36SAmit Kucheria return 0; 400ebf0bd36SAmit Kucheria } 401ebf0bd36SAmit Kucheria 402f791be49SBill Pemberton static int load_twl4030_script(struct twl4030_script *tscript, 403ebf0bd36SAmit Kucheria u8 address) 404ebf0bd36SAmit Kucheria { 405ebf0bd36SAmit Kucheria int err; 40675a74565SAmit Kucheria static int order; 407ebf0bd36SAmit Kucheria 408ebf0bd36SAmit Kucheria /* Make sure the script isn't going beyond last valid address (0x3f) */ 409ebf0bd36SAmit Kucheria if ((address + tscript->size) > END_OF_SCRIPT) { 410ebf0bd36SAmit Kucheria pr_err("TWL4030 scripts too big error\n"); 411ebf0bd36SAmit Kucheria return -EINVAL; 412ebf0bd36SAmit Kucheria } 413ebf0bd36SAmit Kucheria 414ebf0bd36SAmit Kucheria err = twl4030_write_script(address, tscript->script, tscript->size); 415ebf0bd36SAmit Kucheria if (err) 416ebf0bd36SAmit Kucheria goto out; 417ebf0bd36SAmit Kucheria 418ebf0bd36SAmit Kucheria if (tscript->flags & TWL4030_WRST_SCRIPT) { 419ebf0bd36SAmit Kucheria err = twl4030_config_warmreset_sequence(address); 420ebf0bd36SAmit Kucheria if (err) 421ebf0bd36SAmit Kucheria goto out; 422ebf0bd36SAmit Kucheria } 423ebf0bd36SAmit Kucheria if (tscript->flags & TWL4030_WAKEUP12_SCRIPT) { 424ebf0bd36SAmit Kucheria err = twl4030_config_wakeup12_sequence(address); 425ebf0bd36SAmit Kucheria if (err) 426ebf0bd36SAmit Kucheria goto out; 42775a74565SAmit Kucheria order = 1; 428ebf0bd36SAmit Kucheria } 429ebf0bd36SAmit Kucheria if (tscript->flags & TWL4030_WAKEUP3_SCRIPT) { 430ebf0bd36SAmit Kucheria err = twl4030_config_wakeup3_sequence(address); 431ebf0bd36SAmit Kucheria if (err) 432ebf0bd36SAmit Kucheria goto out; 433ebf0bd36SAmit Kucheria } 434c62dd365SLesly A M if (tscript->flags & TWL4030_SLEEP_SCRIPT) { 4351f968ff6SLesly A M if (!order) 43675a74565SAmit Kucheria pr_warning("TWL4030: Bad order of scripts (sleep "\ 43775a74565SAmit Kucheria "script before wakeup) Leads to boot"\ 43875a74565SAmit Kucheria "failure on some boards\n"); 439ebf0bd36SAmit Kucheria err = twl4030_config_sleep_sequence(address); 440c62dd365SLesly A M } 441ebf0bd36SAmit Kucheria out: 442ebf0bd36SAmit Kucheria return err; 443ebf0bd36SAmit Kucheria } 444ebf0bd36SAmit Kucheria 44511a441ceSMike Turquette int twl4030_remove_script(u8 flags) 44611a441ceSMike Turquette { 44711a441ceSMike Turquette int err = 0; 44811a441ceSMike Turquette 4494850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1, 45071084406SFelipe Balbi TWL4030_PM_MASTER_PROTECT_KEY); 45111a441ceSMike Turquette if (err) { 45211a441ceSMike Turquette pr_err("twl4030: unable to unlock PROTECT_KEY\n"); 45311a441ceSMike Turquette return err; 45411a441ceSMike Turquette } 45511a441ceSMike Turquette 4564850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG2, 45771084406SFelipe Balbi TWL4030_PM_MASTER_PROTECT_KEY); 45811a441ceSMike Turquette if (err) { 45911a441ceSMike Turquette pr_err("twl4030: unable to unlock PROTECT_KEY\n"); 46011a441ceSMike Turquette return err; 46111a441ceSMike Turquette } 46211a441ceSMike Turquette 46311a441ceSMike Turquette if (flags & TWL4030_WRST_SCRIPT) { 4644850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT, 46511a441ceSMike Turquette R_SEQ_ADD_WARM); 46611a441ceSMike Turquette if (err) 46711a441ceSMike Turquette return err; 46811a441ceSMike Turquette } 46911a441ceSMike Turquette if (flags & TWL4030_WAKEUP12_SCRIPT) { 4704850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT, 47111a441ceSMike Turquette R_SEQ_ADD_S2A12); 472eac78a21SLesly A M if (err) 47311a441ceSMike Turquette return err; 47411a441ceSMike Turquette } 47511a441ceSMike Turquette if (flags & TWL4030_WAKEUP3_SCRIPT) { 4764850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT, 47711a441ceSMike Turquette R_SEQ_ADD_S2A3); 47811a441ceSMike Turquette if (err) 47911a441ceSMike Turquette return err; 48011a441ceSMike Turquette } 48111a441ceSMike Turquette if (flags & TWL4030_SLEEP_SCRIPT) { 4824850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT, 48311a441ceSMike Turquette R_SEQ_ADD_A2S); 48411a441ceSMike Turquette if (err) 48511a441ceSMike Turquette return err; 48611a441ceSMike Turquette } 48711a441ceSMike Turquette 4884850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0, 48971084406SFelipe Balbi TWL4030_PM_MASTER_PROTECT_KEY); 49011a441ceSMike Turquette if (err) 49111a441ceSMike Turquette pr_err("TWL4030 Unable to relock registers\n"); 49211a441ceSMike Turquette 49311a441ceSMike Turquette return err; 49411a441ceSMike Turquette } 49511a441ceSMike Turquette 496f58cb407SFlorian Vaussard int twl4030_power_configure_scripts(struct twl4030_power_data *pdata) 497f58cb407SFlorian Vaussard { 498f58cb407SFlorian Vaussard int err; 499f58cb407SFlorian Vaussard int i; 500f58cb407SFlorian Vaussard u8 address = twl4030_start_script_address; 501f58cb407SFlorian Vaussard 502f58cb407SFlorian Vaussard for (i = 0; i < pdata->num; i++) { 503f58cb407SFlorian Vaussard err = load_twl4030_script(pdata->scripts[i], address); 504f58cb407SFlorian Vaussard if (err) 505f58cb407SFlorian Vaussard return err; 506f58cb407SFlorian Vaussard address += pdata->scripts[i]->size; 507f58cb407SFlorian Vaussard } 508f58cb407SFlorian Vaussard 509f58cb407SFlorian Vaussard return 0; 510f58cb407SFlorian Vaussard } 511f58cb407SFlorian Vaussard 512f58cb407SFlorian Vaussard int twl4030_power_configure_resources(struct twl4030_power_data *pdata) 513f58cb407SFlorian Vaussard { 514f58cb407SFlorian Vaussard struct twl4030_resconfig *resconfig = pdata->resource_config; 515f58cb407SFlorian Vaussard int err; 516f58cb407SFlorian Vaussard 517f58cb407SFlorian Vaussard if (resconfig) { 518f58cb407SFlorian Vaussard while (resconfig->resource) { 519f58cb407SFlorian Vaussard err = twl4030_configure_resource(resconfig); 520f58cb407SFlorian Vaussard if (err) 521f58cb407SFlorian Vaussard return err; 522f58cb407SFlorian Vaussard resconfig++; 523f58cb407SFlorian Vaussard } 524f58cb407SFlorian Vaussard } 525f58cb407SFlorian Vaussard 526f58cb407SFlorian Vaussard return 0; 527f58cb407SFlorian Vaussard } 528f58cb407SFlorian Vaussard 52926cc3ab9SIgor Grinberg /* 53026cc3ab9SIgor Grinberg * In master mode, start the power off sequence. 53126cc3ab9SIgor Grinberg * After a successful execution, TWL shuts down the power to the SoC 53226cc3ab9SIgor Grinberg * and all peripherals connected to it. 53326cc3ab9SIgor Grinberg */ 53426cc3ab9SIgor Grinberg void twl4030_power_off(void) 53526cc3ab9SIgor Grinberg { 53626cc3ab9SIgor Grinberg int err; 53726cc3ab9SIgor Grinberg 5384850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, PWR_DEVOFF, 53926cc3ab9SIgor Grinberg TWL4030_PM_MASTER_P1_SW_EVENTS); 54026cc3ab9SIgor Grinberg if (err) 54126cc3ab9SIgor Grinberg pr_err("TWL4030 Unable to power off\n"); 54226cc3ab9SIgor Grinberg } 54326cc3ab9SIgor Grinberg 544b0fc1da4SFlorian Vaussard static bool twl4030_power_use_poweroff(struct twl4030_power_data *pdata, 545b0fc1da4SFlorian Vaussard struct device_node *node) 546b0fc1da4SFlorian Vaussard { 547b0fc1da4SFlorian Vaussard if (pdata && pdata->use_poweroff) 548b0fc1da4SFlorian Vaussard return true; 549b0fc1da4SFlorian Vaussard 550b0fc1da4SFlorian Vaussard if (of_property_read_bool(node, "ti,use_poweroff")) 551b0fc1da4SFlorian Vaussard return true; 552b0fc1da4SFlorian Vaussard 553b0fc1da4SFlorian Vaussard return false; 554b0fc1da4SFlorian Vaussard } 555b0fc1da4SFlorian Vaussard 556637d6895SFlorian Vaussard int twl4030_power_probe(struct platform_device *pdev) 557ebf0bd36SAmit Kucheria { 558637d6895SFlorian Vaussard struct twl4030_power_data *pdata = pdev->dev.platform_data; 559b0fc1da4SFlorian Vaussard struct device_node *node = pdev->dev.of_node; 560ebf0bd36SAmit Kucheria int err = 0; 561f58cb407SFlorian Vaussard u8 val; 562ebf0bd36SAmit Kucheria 563b0fc1da4SFlorian Vaussard if (!pdata && !node) { 564b0fc1da4SFlorian Vaussard dev_err(&pdev->dev, "Platform data is missing\n"); 565b0fc1da4SFlorian Vaussard return -EINVAL; 566b0fc1da4SFlorian Vaussard } 567b0fc1da4SFlorian Vaussard 5684850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1, 56971084406SFelipe Balbi TWL4030_PM_MASTER_PROTECT_KEY); 570e77a4c2fSFlorian Vaussard err |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 571e77a4c2fSFlorian Vaussard TWL4030_PM_MASTER_KEY_CFG2, 57271084406SFelipe Balbi TWL4030_PM_MASTER_PROTECT_KEY); 573e77a4c2fSFlorian Vaussard 574e77a4c2fSFlorian Vaussard if (err) { 575e77a4c2fSFlorian Vaussard pr_err("TWL4030 Unable to unlock registers\n"); 576e77a4c2fSFlorian Vaussard return err; 577e77a4c2fSFlorian Vaussard } 578ebf0bd36SAmit Kucheria 579b0fc1da4SFlorian Vaussard if (pdata) { 580b0fc1da4SFlorian Vaussard /* TODO: convert to device tree */ 581f58cb407SFlorian Vaussard err = twl4030_power_configure_scripts(pdata); 582e77a4c2fSFlorian Vaussard if (err) { 583e77a4c2fSFlorian Vaussard pr_err("TWL4030 failed to load scripts\n"); 584e77a4c2fSFlorian Vaussard return err; 585e77a4c2fSFlorian Vaussard } 586f58cb407SFlorian Vaussard err = twl4030_power_configure_resources(pdata); 587e77a4c2fSFlorian Vaussard if (err) { 588e77a4c2fSFlorian Vaussard pr_err("TWL4030 failed to configure resource\n"); 589e77a4c2fSFlorian Vaussard return err; 590e77a4c2fSFlorian Vaussard } 591b0fc1da4SFlorian Vaussard } 592ebf0bd36SAmit Kucheria 59326cc3ab9SIgor Grinberg /* Board has to be wired properly to use this feature */ 594b0fc1da4SFlorian Vaussard if (twl4030_power_use_poweroff(pdata, node) && !pm_power_off) { 59526cc3ab9SIgor Grinberg /* Default for SEQ_OFFSYNC is set, lets ensure this */ 5964850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &val, 59726cc3ab9SIgor Grinberg TWL4030_PM_MASTER_CFG_P123_TRANSITION); 59826cc3ab9SIgor Grinberg if (err) { 59926cc3ab9SIgor Grinberg pr_warning("TWL4030 Unable to read registers\n"); 60026cc3ab9SIgor Grinberg 60126cc3ab9SIgor Grinberg } else if (!(val & SEQ_OFFSYNC)) { 60226cc3ab9SIgor Grinberg val |= SEQ_OFFSYNC; 6034850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, val, 60426cc3ab9SIgor Grinberg TWL4030_PM_MASTER_CFG_P123_TRANSITION); 60526cc3ab9SIgor Grinberg if (err) { 60626cc3ab9SIgor Grinberg pr_err("TWL4030 Unable to setup SEQ_OFFSYNC\n"); 60726cc3ab9SIgor Grinberg goto relock; 60826cc3ab9SIgor Grinberg } 60926cc3ab9SIgor Grinberg } 61026cc3ab9SIgor Grinberg 61126cc3ab9SIgor Grinberg pm_power_off = twl4030_power_off; 61226cc3ab9SIgor Grinberg } 61326cc3ab9SIgor Grinberg 61426cc3ab9SIgor Grinberg relock: 6154850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0, 61671084406SFelipe Balbi TWL4030_PM_MASTER_PROTECT_KEY); 617ebf0bd36SAmit Kucheria if (err) 618ebf0bd36SAmit Kucheria pr_err("TWL4030 Unable to relock registers\n"); 619637d6895SFlorian Vaussard return err; 620ebf0bd36SAmit Kucheria } 621637d6895SFlorian Vaussard 622637d6895SFlorian Vaussard static int twl4030_power_remove(struct platform_device *pdev) 623637d6895SFlorian Vaussard { 624637d6895SFlorian Vaussard return 0; 625637d6895SFlorian Vaussard } 626637d6895SFlorian Vaussard 627b0fc1da4SFlorian Vaussard #ifdef CONFIG_OF 628b0fc1da4SFlorian Vaussard static const struct of_device_id twl4030_power_of_match[] = { 629b0fc1da4SFlorian Vaussard {.compatible = "ti,twl4030-power", }, 630b0fc1da4SFlorian Vaussard { }, 631b0fc1da4SFlorian Vaussard }; 632b0fc1da4SFlorian Vaussard MODULE_DEVICE_TABLE(of, twl4030_power_of_match); 633b0fc1da4SFlorian Vaussard #endif 634b0fc1da4SFlorian Vaussard 635637d6895SFlorian Vaussard static struct platform_driver twl4030_power_driver = { 636637d6895SFlorian Vaussard .driver = { 637637d6895SFlorian Vaussard .name = "twl4030_power", 638637d6895SFlorian Vaussard .owner = THIS_MODULE, 639b0fc1da4SFlorian Vaussard .of_match_table = of_match_ptr(twl4030_power_of_match), 640637d6895SFlorian Vaussard }, 641637d6895SFlorian Vaussard .probe = twl4030_power_probe, 642637d6895SFlorian Vaussard .remove = twl4030_power_remove, 643637d6895SFlorian Vaussard }; 644637d6895SFlorian Vaussard 645637d6895SFlorian Vaussard module_platform_driver(twl4030_power_driver); 646637d6895SFlorian Vaussard 647637d6895SFlorian Vaussard MODULE_AUTHOR("Nokia Corporation"); 648637d6895SFlorian Vaussard MODULE_AUTHOR("Texas Instruments, Inc."); 649637d6895SFlorian Vaussard MODULE_DESCRIPTION("Power management for TWL4030"); 650637d6895SFlorian Vaussard MODULE_LICENSE("GPL"); 651637d6895SFlorian Vaussard MODULE_ALIAS("platform:twl4030_power"); 652