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> 31ebf0bd36SAmit Kucheria 32ebf0bd36SAmit Kucheria #include <asm/mach-types.h> 33ebf0bd36SAmit Kucheria 34ebf0bd36SAmit Kucheria static u8 twl4030_start_script_address = 0x2b; 35ebf0bd36SAmit Kucheria 36ebf0bd36SAmit Kucheria #define PWR_P1_SW_EVENTS 0x10 37ebf0bd36SAmit Kucheria #define PWR_DEVOFF (1 << 0) 3826cc3ab9SIgor Grinberg #define SEQ_OFFSYNC (1 << 0) 39ebf0bd36SAmit Kucheria 40ebf0bd36SAmit Kucheria #define PHY_TO_OFF_PM_MASTER(p) (p - 0x36) 41ebf0bd36SAmit Kucheria #define PHY_TO_OFF_PM_RECEIVER(p) (p - 0x5b) 42ebf0bd36SAmit Kucheria 43ebf0bd36SAmit Kucheria /* resource - hfclk */ 44ebf0bd36SAmit Kucheria #define R_HFCLKOUT_DEV_GRP PHY_TO_OFF_PM_RECEIVER(0xe6) 45ebf0bd36SAmit Kucheria 46ebf0bd36SAmit Kucheria /* PM events */ 47ebf0bd36SAmit Kucheria #define R_P1_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x46) 48ebf0bd36SAmit Kucheria #define R_P2_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x47) 49ebf0bd36SAmit Kucheria #define R_P3_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x48) 50ebf0bd36SAmit Kucheria #define R_CFG_P1_TRANSITION PHY_TO_OFF_PM_MASTER(0x36) 51ebf0bd36SAmit Kucheria #define R_CFG_P2_TRANSITION PHY_TO_OFF_PM_MASTER(0x37) 52ebf0bd36SAmit Kucheria #define R_CFG_P3_TRANSITION PHY_TO_OFF_PM_MASTER(0x38) 53ebf0bd36SAmit Kucheria 54ebf0bd36SAmit Kucheria #define LVL_WAKEUP 0x08 55ebf0bd36SAmit Kucheria 56ebf0bd36SAmit Kucheria #define ENABLE_WARMRESET (1<<4) 57ebf0bd36SAmit Kucheria 58ebf0bd36SAmit Kucheria #define END_OF_SCRIPT 0x3f 59ebf0bd36SAmit Kucheria 60ebf0bd36SAmit Kucheria #define R_SEQ_ADD_A2S PHY_TO_OFF_PM_MASTER(0x55) 61ebf0bd36SAmit Kucheria #define R_SEQ_ADD_S2A12 PHY_TO_OFF_PM_MASTER(0x56) 62ebf0bd36SAmit Kucheria #define R_SEQ_ADD_S2A3 PHY_TO_OFF_PM_MASTER(0x57) 63ebf0bd36SAmit Kucheria #define R_SEQ_ADD_WARM PHY_TO_OFF_PM_MASTER(0x58) 64ebf0bd36SAmit Kucheria #define R_MEMORY_ADDRESS PHY_TO_OFF_PM_MASTER(0x59) 65ebf0bd36SAmit Kucheria #define R_MEMORY_DATA PHY_TO_OFF_PM_MASTER(0x5a) 66ebf0bd36SAmit Kucheria 67890463f0SAmit Kucheria /* resource configuration registers 68890463f0SAmit Kucheria <RESOURCE>_DEV_GRP at address 'n+0' 69890463f0SAmit Kucheria <RESOURCE>_TYPE at address 'n+1' 70890463f0SAmit Kucheria <RESOURCE>_REMAP at address 'n+2' 71890463f0SAmit Kucheria <RESOURCE>_DEDICATED at address 'n+3' 72890463f0SAmit Kucheria */ 73e97d1546SAmit Kucheria #define DEV_GRP_OFFSET 0 74ebf0bd36SAmit Kucheria #define TYPE_OFFSET 1 75b4ead61eSAmit Kucheria #define REMAP_OFFSET 2 76b4ead61eSAmit Kucheria #define DEDICATED_OFFSET 3 77ebf0bd36SAmit Kucheria 78e97d1546SAmit Kucheria /* Bit positions in the registers */ 79890463f0SAmit Kucheria 80890463f0SAmit Kucheria /* <RESOURCE>_DEV_GRP */ 81e97d1546SAmit Kucheria #define DEV_GRP_SHIFT 5 82e97d1546SAmit Kucheria #define DEV_GRP_MASK (7 << DEV_GRP_SHIFT) 83890463f0SAmit Kucheria 84890463f0SAmit Kucheria /* <RESOURCE>_TYPE */ 85ebf0bd36SAmit Kucheria #define TYPE_SHIFT 0 86ebf0bd36SAmit Kucheria #define TYPE_MASK (7 << TYPE_SHIFT) 87ebf0bd36SAmit Kucheria #define TYPE2_SHIFT 3 88ebf0bd36SAmit Kucheria #define TYPE2_MASK (3 << TYPE2_SHIFT) 89ebf0bd36SAmit Kucheria 90b4ead61eSAmit Kucheria /* <RESOURCE>_REMAP */ 91b4ead61eSAmit Kucheria #define SLEEP_STATE_SHIFT 0 92b4ead61eSAmit Kucheria #define SLEEP_STATE_MASK (0xf << SLEEP_STATE_SHIFT) 93b4ead61eSAmit Kucheria #define OFF_STATE_SHIFT 4 94b4ead61eSAmit Kucheria #define OFF_STATE_MASK (0xf << OFF_STATE_SHIFT) 95b4ead61eSAmit Kucheria 96ebf0bd36SAmit Kucheria static u8 res_config_addrs[] = { 97ebf0bd36SAmit Kucheria [RES_VAUX1] = 0x17, 98ebf0bd36SAmit Kucheria [RES_VAUX2] = 0x1b, 99ebf0bd36SAmit Kucheria [RES_VAUX3] = 0x1f, 100ebf0bd36SAmit Kucheria [RES_VAUX4] = 0x23, 101ebf0bd36SAmit Kucheria [RES_VMMC1] = 0x27, 102ebf0bd36SAmit Kucheria [RES_VMMC2] = 0x2b, 103ebf0bd36SAmit Kucheria [RES_VPLL1] = 0x2f, 104ebf0bd36SAmit Kucheria [RES_VPLL2] = 0x33, 105ebf0bd36SAmit Kucheria [RES_VSIM] = 0x37, 106ebf0bd36SAmit Kucheria [RES_VDAC] = 0x3b, 107ebf0bd36SAmit Kucheria [RES_VINTANA1] = 0x3f, 108ebf0bd36SAmit Kucheria [RES_VINTANA2] = 0x43, 109ebf0bd36SAmit Kucheria [RES_VINTDIG] = 0x47, 110ebf0bd36SAmit Kucheria [RES_VIO] = 0x4b, 111ebf0bd36SAmit Kucheria [RES_VDD1] = 0x55, 112ebf0bd36SAmit Kucheria [RES_VDD2] = 0x63, 113ebf0bd36SAmit Kucheria [RES_VUSB_1V5] = 0x71, 114ebf0bd36SAmit Kucheria [RES_VUSB_1V8] = 0x74, 115ebf0bd36SAmit Kucheria [RES_VUSB_3V1] = 0x77, 116ebf0bd36SAmit Kucheria [RES_VUSBCP] = 0x7a, 117ebf0bd36SAmit Kucheria [RES_REGEN] = 0x7f, 118ebf0bd36SAmit Kucheria [RES_NRES_PWRON] = 0x82, 119ebf0bd36SAmit Kucheria [RES_CLKEN] = 0x85, 120ebf0bd36SAmit Kucheria [RES_SYSEN] = 0x88, 121ebf0bd36SAmit Kucheria [RES_HFCLKOUT] = 0x8b, 122ebf0bd36SAmit Kucheria [RES_32KCLKOUT] = 0x8e, 123ebf0bd36SAmit Kucheria [RES_RESET] = 0x91, 124d7ac829fSLesly A M [RES_MAIN_REF] = 0x94, 125ebf0bd36SAmit Kucheria }; 126ebf0bd36SAmit Kucheria 127f791be49SBill Pemberton static int twl4030_write_script_byte(u8 address, u8 byte) 128ebf0bd36SAmit Kucheria { 129ebf0bd36SAmit Kucheria int err; 130ebf0bd36SAmit Kucheria 1314850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_MEMORY_ADDRESS); 132ebf0bd36SAmit Kucheria if (err) 133ebf0bd36SAmit Kucheria goto out; 1344850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, byte, R_MEMORY_DATA); 135ebf0bd36SAmit Kucheria out: 136ebf0bd36SAmit Kucheria return err; 137ebf0bd36SAmit Kucheria } 138ebf0bd36SAmit Kucheria 139f791be49SBill Pemberton static int twl4030_write_script_ins(u8 address, u16 pmb_message, 140ebf0bd36SAmit Kucheria u8 delay, u8 next) 141ebf0bd36SAmit Kucheria { 142ebf0bd36SAmit Kucheria int err; 143ebf0bd36SAmit Kucheria 144ebf0bd36SAmit Kucheria address *= 4; 145ebf0bd36SAmit Kucheria err = twl4030_write_script_byte(address++, pmb_message >> 8); 146ebf0bd36SAmit Kucheria if (err) 147ebf0bd36SAmit Kucheria goto out; 148ebf0bd36SAmit Kucheria err = twl4030_write_script_byte(address++, pmb_message & 0xff); 149ebf0bd36SAmit Kucheria if (err) 150ebf0bd36SAmit Kucheria goto out; 151ebf0bd36SAmit Kucheria err = twl4030_write_script_byte(address++, delay); 152ebf0bd36SAmit Kucheria if (err) 153ebf0bd36SAmit Kucheria goto out; 154ebf0bd36SAmit Kucheria err = twl4030_write_script_byte(address++, next); 155ebf0bd36SAmit Kucheria out: 156ebf0bd36SAmit Kucheria return err; 157ebf0bd36SAmit Kucheria } 158ebf0bd36SAmit Kucheria 159f791be49SBill Pemberton static int twl4030_write_script(u8 address, struct twl4030_ins *script, 160ebf0bd36SAmit Kucheria int len) 161ebf0bd36SAmit Kucheria { 162f65e9eacSArnd Bergmann int err = -EINVAL; 163ebf0bd36SAmit Kucheria 164ebf0bd36SAmit Kucheria for (; len; len--, address++, script++) { 165ebf0bd36SAmit Kucheria if (len == 1) { 166ebf0bd36SAmit Kucheria err = twl4030_write_script_ins(address, 167ebf0bd36SAmit Kucheria script->pmb_message, 168ebf0bd36SAmit Kucheria script->delay, 169ebf0bd36SAmit Kucheria END_OF_SCRIPT); 170ebf0bd36SAmit Kucheria if (err) 171ebf0bd36SAmit Kucheria break; 172ebf0bd36SAmit Kucheria } else { 173ebf0bd36SAmit Kucheria err = twl4030_write_script_ins(address, 174ebf0bd36SAmit Kucheria script->pmb_message, 175ebf0bd36SAmit Kucheria script->delay, 176ebf0bd36SAmit Kucheria address + 1); 177ebf0bd36SAmit Kucheria if (err) 178ebf0bd36SAmit Kucheria break; 179ebf0bd36SAmit Kucheria } 180ebf0bd36SAmit Kucheria } 181ebf0bd36SAmit Kucheria return err; 182ebf0bd36SAmit Kucheria } 183ebf0bd36SAmit Kucheria 184f791be49SBill Pemberton static int twl4030_config_wakeup3_sequence(u8 address) 185ebf0bd36SAmit Kucheria { 186ebf0bd36SAmit Kucheria int err; 187ebf0bd36SAmit Kucheria u8 data; 188ebf0bd36SAmit Kucheria 189ebf0bd36SAmit Kucheria /* Set SLEEP to ACTIVE SEQ address for P3 */ 1904850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_S2A3); 191ebf0bd36SAmit Kucheria if (err) 192ebf0bd36SAmit Kucheria goto out; 193ebf0bd36SAmit Kucheria 194ebf0bd36SAmit Kucheria /* P3 LVL_WAKEUP should be on LEVEL */ 1954850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data, R_P3_SW_EVENTS); 196ebf0bd36SAmit Kucheria if (err) 197ebf0bd36SAmit Kucheria goto out; 198ebf0bd36SAmit Kucheria data |= LVL_WAKEUP; 1994850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, data, R_P3_SW_EVENTS); 200ebf0bd36SAmit Kucheria out: 201ebf0bd36SAmit Kucheria if (err) 202ebf0bd36SAmit Kucheria pr_err("TWL4030 wakeup sequence for P3 config error\n"); 203ebf0bd36SAmit Kucheria return err; 204ebf0bd36SAmit Kucheria } 205ebf0bd36SAmit Kucheria 206f791be49SBill Pemberton static int twl4030_config_wakeup12_sequence(u8 address) 207ebf0bd36SAmit Kucheria { 208ebf0bd36SAmit Kucheria int err = 0; 209ebf0bd36SAmit Kucheria u8 data; 210ebf0bd36SAmit Kucheria 211ebf0bd36SAmit Kucheria /* Set SLEEP to ACTIVE SEQ address for P1 and P2 */ 2124850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_S2A12); 213ebf0bd36SAmit Kucheria if (err) 214ebf0bd36SAmit Kucheria goto out; 215ebf0bd36SAmit Kucheria 216ebf0bd36SAmit Kucheria /* P1/P2 LVL_WAKEUP should be on LEVEL */ 2174850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data, R_P1_SW_EVENTS); 218ebf0bd36SAmit Kucheria if (err) 219ebf0bd36SAmit Kucheria goto out; 220ebf0bd36SAmit Kucheria 221ebf0bd36SAmit Kucheria data |= LVL_WAKEUP; 2224850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, data, R_P1_SW_EVENTS); 223ebf0bd36SAmit Kucheria if (err) 224ebf0bd36SAmit Kucheria goto out; 225ebf0bd36SAmit Kucheria 2264850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data, R_P2_SW_EVENTS); 227ebf0bd36SAmit Kucheria if (err) 228ebf0bd36SAmit Kucheria goto out; 229ebf0bd36SAmit Kucheria 230ebf0bd36SAmit Kucheria data |= LVL_WAKEUP; 2314850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, data, R_P2_SW_EVENTS); 232ebf0bd36SAmit Kucheria if (err) 233ebf0bd36SAmit Kucheria goto out; 234ebf0bd36SAmit Kucheria 235ebf0bd36SAmit Kucheria if (machine_is_omap_3430sdp() || machine_is_omap_ldp()) { 236ebf0bd36SAmit Kucheria /* Disabling AC charger effect on sleep-active transitions */ 2374850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data, 238ebf0bd36SAmit Kucheria R_CFG_P1_TRANSITION); 239ebf0bd36SAmit Kucheria if (err) 240ebf0bd36SAmit Kucheria goto out; 241ebf0bd36SAmit Kucheria data &= ~(1<<1); 2424850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, data, 243ebf0bd36SAmit Kucheria R_CFG_P1_TRANSITION); 244ebf0bd36SAmit Kucheria if (err) 245ebf0bd36SAmit Kucheria goto out; 246ebf0bd36SAmit Kucheria } 247ebf0bd36SAmit Kucheria 248ebf0bd36SAmit Kucheria out: 249ebf0bd36SAmit Kucheria if (err) 250ebf0bd36SAmit Kucheria pr_err("TWL4030 wakeup sequence for P1 and P2" \ 251ebf0bd36SAmit Kucheria "config error\n"); 252ebf0bd36SAmit Kucheria return err; 253ebf0bd36SAmit Kucheria } 254ebf0bd36SAmit Kucheria 255f791be49SBill Pemberton static int twl4030_config_sleep_sequence(u8 address) 256ebf0bd36SAmit Kucheria { 257ebf0bd36SAmit Kucheria int err; 258ebf0bd36SAmit Kucheria 259ebf0bd36SAmit Kucheria /* Set ACTIVE to SLEEP SEQ address in T2 memory*/ 2604850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_A2S); 261ebf0bd36SAmit Kucheria 262ebf0bd36SAmit Kucheria if (err) 263ebf0bd36SAmit Kucheria pr_err("TWL4030 sleep sequence config error\n"); 264ebf0bd36SAmit Kucheria 265ebf0bd36SAmit Kucheria return err; 266ebf0bd36SAmit Kucheria } 267ebf0bd36SAmit Kucheria 268f791be49SBill Pemberton static int twl4030_config_warmreset_sequence(u8 address) 269ebf0bd36SAmit Kucheria { 270ebf0bd36SAmit Kucheria int err; 271ebf0bd36SAmit Kucheria u8 rd_data; 272ebf0bd36SAmit Kucheria 273ebf0bd36SAmit Kucheria /* Set WARM RESET SEQ address for P1 */ 2744850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_WARM); 275ebf0bd36SAmit Kucheria if (err) 276ebf0bd36SAmit Kucheria goto out; 277ebf0bd36SAmit Kucheria 278ebf0bd36SAmit Kucheria /* P1/P2/P3 enable WARMRESET */ 2794850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &rd_data, R_P1_SW_EVENTS); 280ebf0bd36SAmit Kucheria if (err) 281ebf0bd36SAmit Kucheria goto out; 282ebf0bd36SAmit Kucheria 283ebf0bd36SAmit Kucheria rd_data |= ENABLE_WARMRESET; 2844850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, rd_data, R_P1_SW_EVENTS); 285ebf0bd36SAmit Kucheria if (err) 286ebf0bd36SAmit Kucheria goto out; 287ebf0bd36SAmit Kucheria 2884850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &rd_data, R_P2_SW_EVENTS); 289ebf0bd36SAmit Kucheria if (err) 290ebf0bd36SAmit Kucheria goto out; 291ebf0bd36SAmit Kucheria 292ebf0bd36SAmit Kucheria rd_data |= ENABLE_WARMRESET; 2934850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, rd_data, R_P2_SW_EVENTS); 294ebf0bd36SAmit Kucheria if (err) 295ebf0bd36SAmit Kucheria goto out; 296ebf0bd36SAmit Kucheria 2974850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &rd_data, R_P3_SW_EVENTS); 298ebf0bd36SAmit Kucheria if (err) 299ebf0bd36SAmit Kucheria goto out; 300ebf0bd36SAmit Kucheria 301ebf0bd36SAmit Kucheria rd_data |= ENABLE_WARMRESET; 3024850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, rd_data, R_P3_SW_EVENTS); 303ebf0bd36SAmit Kucheria out: 304ebf0bd36SAmit Kucheria if (err) 305ebf0bd36SAmit Kucheria pr_err("TWL4030 warmreset seq config error\n"); 306ebf0bd36SAmit Kucheria return err; 307ebf0bd36SAmit Kucheria } 308ebf0bd36SAmit Kucheria 309f791be49SBill Pemberton static int twl4030_configure_resource(struct twl4030_resconfig *rconfig) 310ebf0bd36SAmit Kucheria { 311ebf0bd36SAmit Kucheria int rconfig_addr; 312ebf0bd36SAmit Kucheria int err; 313ebf0bd36SAmit Kucheria u8 type; 314ebf0bd36SAmit Kucheria u8 grp; 315b4ead61eSAmit Kucheria u8 remap; 316ebf0bd36SAmit Kucheria 317ebf0bd36SAmit Kucheria if (rconfig->resource > TOTAL_RESOURCES) { 318ebf0bd36SAmit Kucheria pr_err("TWL4030 Resource %d does not exist\n", 319ebf0bd36SAmit Kucheria rconfig->resource); 320ebf0bd36SAmit Kucheria return -EINVAL; 321ebf0bd36SAmit Kucheria } 322ebf0bd36SAmit Kucheria 323ebf0bd36SAmit Kucheria rconfig_addr = res_config_addrs[rconfig->resource]; 324ebf0bd36SAmit Kucheria 325ebf0bd36SAmit Kucheria /* Set resource group */ 3264850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &grp, 327e97d1546SAmit Kucheria rconfig_addr + DEV_GRP_OFFSET); 328ebf0bd36SAmit Kucheria if (err) { 329ebf0bd36SAmit Kucheria pr_err("TWL4030 Resource %d group could not be read\n", 330ebf0bd36SAmit Kucheria rconfig->resource); 331ebf0bd36SAmit Kucheria return err; 332ebf0bd36SAmit Kucheria } 333ebf0bd36SAmit Kucheria 33456baa667SAaro Koskinen if (rconfig->devgroup != TWL4030_RESCONFIG_UNDEF) { 335e97d1546SAmit Kucheria grp &= ~DEV_GRP_MASK; 336e97d1546SAmit Kucheria grp |= rconfig->devgroup << DEV_GRP_SHIFT; 3374850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 338e97d1546SAmit Kucheria grp, rconfig_addr + DEV_GRP_OFFSET); 339ebf0bd36SAmit Kucheria if (err < 0) { 340ebf0bd36SAmit Kucheria pr_err("TWL4030 failed to program devgroup\n"); 341ebf0bd36SAmit Kucheria return err; 342ebf0bd36SAmit Kucheria } 343ebf0bd36SAmit Kucheria } 344ebf0bd36SAmit Kucheria 345ebf0bd36SAmit Kucheria /* Set resource types */ 3464850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &type, 347ebf0bd36SAmit Kucheria rconfig_addr + TYPE_OFFSET); 348ebf0bd36SAmit Kucheria if (err < 0) { 349ebf0bd36SAmit Kucheria pr_err("TWL4030 Resource %d type could not be read\n", 350ebf0bd36SAmit Kucheria rconfig->resource); 351ebf0bd36SAmit Kucheria return err; 352ebf0bd36SAmit Kucheria } 353ebf0bd36SAmit Kucheria 35456baa667SAaro Koskinen if (rconfig->type != TWL4030_RESCONFIG_UNDEF) { 355ebf0bd36SAmit Kucheria type &= ~TYPE_MASK; 356ebf0bd36SAmit Kucheria type |= rconfig->type << TYPE_SHIFT; 357ebf0bd36SAmit Kucheria } 358ebf0bd36SAmit Kucheria 35956baa667SAaro Koskinen if (rconfig->type2 != TWL4030_RESCONFIG_UNDEF) { 360ebf0bd36SAmit Kucheria type &= ~TYPE2_MASK; 361ebf0bd36SAmit Kucheria type |= rconfig->type2 << TYPE2_SHIFT; 362ebf0bd36SAmit Kucheria } 363ebf0bd36SAmit Kucheria 3644850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 365ebf0bd36SAmit Kucheria type, rconfig_addr + TYPE_OFFSET); 366ebf0bd36SAmit Kucheria if (err < 0) { 367ebf0bd36SAmit Kucheria pr_err("TWL4030 failed to program resource type\n"); 368ebf0bd36SAmit Kucheria return err; 369ebf0bd36SAmit Kucheria } 370ebf0bd36SAmit Kucheria 371b4ead61eSAmit Kucheria /* Set remap states */ 3724850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &remap, 373b4ead61eSAmit Kucheria rconfig_addr + REMAP_OFFSET); 374b4ead61eSAmit Kucheria if (err < 0) { 375b4ead61eSAmit Kucheria pr_err("TWL4030 Resource %d remap could not be read\n", 376b4ead61eSAmit Kucheria rconfig->resource); 377b4ead61eSAmit Kucheria return err; 378b4ead61eSAmit Kucheria } 379b4ead61eSAmit Kucheria 38053cf9a60SAmit Kucheria if (rconfig->remap_off != TWL4030_RESCONFIG_UNDEF) { 381b4ead61eSAmit Kucheria remap &= ~OFF_STATE_MASK; 382b4ead61eSAmit Kucheria remap |= rconfig->remap_off << OFF_STATE_SHIFT; 383b4ead61eSAmit Kucheria } 384b4ead61eSAmit Kucheria 38553cf9a60SAmit Kucheria if (rconfig->remap_sleep != TWL4030_RESCONFIG_UNDEF) { 386b4ead61eSAmit Kucheria remap &= ~SLEEP_STATE_MASK; 3871ea933f4SMike Turquette remap |= rconfig->remap_sleep << SLEEP_STATE_SHIFT; 388b4ead61eSAmit Kucheria } 389b4ead61eSAmit Kucheria 3904850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 391b4ead61eSAmit Kucheria remap, 392b4ead61eSAmit Kucheria rconfig_addr + REMAP_OFFSET); 393b4ead61eSAmit Kucheria if (err < 0) { 394b4ead61eSAmit Kucheria pr_err("TWL4030 failed to program remap\n"); 395b4ead61eSAmit Kucheria return err; 396b4ead61eSAmit Kucheria } 397b4ead61eSAmit Kucheria 398ebf0bd36SAmit Kucheria return 0; 399ebf0bd36SAmit Kucheria } 400ebf0bd36SAmit Kucheria 401f791be49SBill Pemberton static int load_twl4030_script(struct twl4030_script *tscript, 402ebf0bd36SAmit Kucheria u8 address) 403ebf0bd36SAmit Kucheria { 404ebf0bd36SAmit Kucheria int err; 40575a74565SAmit Kucheria static int order; 406ebf0bd36SAmit Kucheria 407ebf0bd36SAmit Kucheria /* Make sure the script isn't going beyond last valid address (0x3f) */ 408ebf0bd36SAmit Kucheria if ((address + tscript->size) > END_OF_SCRIPT) { 409ebf0bd36SAmit Kucheria pr_err("TWL4030 scripts too big error\n"); 410ebf0bd36SAmit Kucheria return -EINVAL; 411ebf0bd36SAmit Kucheria } 412ebf0bd36SAmit Kucheria 413ebf0bd36SAmit Kucheria err = twl4030_write_script(address, tscript->script, tscript->size); 414ebf0bd36SAmit Kucheria if (err) 415ebf0bd36SAmit Kucheria goto out; 416ebf0bd36SAmit Kucheria 417ebf0bd36SAmit Kucheria if (tscript->flags & TWL4030_WRST_SCRIPT) { 418ebf0bd36SAmit Kucheria err = twl4030_config_warmreset_sequence(address); 419ebf0bd36SAmit Kucheria if (err) 420ebf0bd36SAmit Kucheria goto out; 421ebf0bd36SAmit Kucheria } 422ebf0bd36SAmit Kucheria if (tscript->flags & TWL4030_WAKEUP12_SCRIPT) { 423ebf0bd36SAmit Kucheria err = twl4030_config_wakeup12_sequence(address); 424ebf0bd36SAmit Kucheria if (err) 425ebf0bd36SAmit Kucheria goto out; 42675a74565SAmit Kucheria order = 1; 427ebf0bd36SAmit Kucheria } 428ebf0bd36SAmit Kucheria if (tscript->flags & TWL4030_WAKEUP3_SCRIPT) { 429ebf0bd36SAmit Kucheria err = twl4030_config_wakeup3_sequence(address); 430ebf0bd36SAmit Kucheria if (err) 431ebf0bd36SAmit Kucheria goto out; 432ebf0bd36SAmit Kucheria } 433c62dd365SLesly A M if (tscript->flags & TWL4030_SLEEP_SCRIPT) { 4341f968ff6SLesly A M if (!order) 43575a74565SAmit Kucheria pr_warning("TWL4030: Bad order of scripts (sleep "\ 43675a74565SAmit Kucheria "script before wakeup) Leads to boot"\ 43775a74565SAmit Kucheria "failure on some boards\n"); 438ebf0bd36SAmit Kucheria err = twl4030_config_sleep_sequence(address); 439c62dd365SLesly A M } 440ebf0bd36SAmit Kucheria out: 441ebf0bd36SAmit Kucheria return err; 442ebf0bd36SAmit Kucheria } 443ebf0bd36SAmit Kucheria 44411a441ceSMike Turquette int twl4030_remove_script(u8 flags) 44511a441ceSMike Turquette { 44611a441ceSMike Turquette int err = 0; 44711a441ceSMike Turquette 4484850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1, 44971084406SFelipe Balbi TWL4030_PM_MASTER_PROTECT_KEY); 45011a441ceSMike Turquette if (err) { 45111a441ceSMike Turquette pr_err("twl4030: unable to unlock PROTECT_KEY\n"); 45211a441ceSMike Turquette return err; 45311a441ceSMike Turquette } 45411a441ceSMike Turquette 4554850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG2, 45671084406SFelipe Balbi TWL4030_PM_MASTER_PROTECT_KEY); 45711a441ceSMike Turquette if (err) { 45811a441ceSMike Turquette pr_err("twl4030: unable to unlock PROTECT_KEY\n"); 45911a441ceSMike Turquette return err; 46011a441ceSMike Turquette } 46111a441ceSMike Turquette 46211a441ceSMike Turquette if (flags & TWL4030_WRST_SCRIPT) { 4634850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT, 46411a441ceSMike Turquette R_SEQ_ADD_WARM); 46511a441ceSMike Turquette if (err) 46611a441ceSMike Turquette return err; 46711a441ceSMike Turquette } 46811a441ceSMike Turquette if (flags & TWL4030_WAKEUP12_SCRIPT) { 4694850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT, 47011a441ceSMike Turquette R_SEQ_ADD_S2A12); 471eac78a21SLesly A M if (err) 47211a441ceSMike Turquette return err; 47311a441ceSMike Turquette } 47411a441ceSMike Turquette if (flags & TWL4030_WAKEUP3_SCRIPT) { 4754850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT, 47611a441ceSMike Turquette R_SEQ_ADD_S2A3); 47711a441ceSMike Turquette if (err) 47811a441ceSMike Turquette return err; 47911a441ceSMike Turquette } 48011a441ceSMike Turquette if (flags & TWL4030_SLEEP_SCRIPT) { 4814850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT, 48211a441ceSMike Turquette R_SEQ_ADD_A2S); 48311a441ceSMike Turquette if (err) 48411a441ceSMike Turquette return err; 48511a441ceSMike Turquette } 48611a441ceSMike Turquette 4874850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0, 48871084406SFelipe Balbi TWL4030_PM_MASTER_PROTECT_KEY); 48911a441ceSMike Turquette if (err) 49011a441ceSMike Turquette pr_err("TWL4030 Unable to relock registers\n"); 49111a441ceSMike Turquette 49211a441ceSMike Turquette return err; 49311a441ceSMike Turquette } 49411a441ceSMike Turquette 495f58cb407SFlorian Vaussard int twl4030_power_configure_scripts(struct twl4030_power_data *pdata) 496f58cb407SFlorian Vaussard { 497f58cb407SFlorian Vaussard int err; 498f58cb407SFlorian Vaussard int i; 499f58cb407SFlorian Vaussard u8 address = twl4030_start_script_address; 500f58cb407SFlorian Vaussard 501f58cb407SFlorian Vaussard for (i = 0; i < pdata->num; i++) { 502f58cb407SFlorian Vaussard err = load_twl4030_script(pdata->scripts[i], address); 503f58cb407SFlorian Vaussard if (err) 504f58cb407SFlorian Vaussard return err; 505f58cb407SFlorian Vaussard address += pdata->scripts[i]->size; 506f58cb407SFlorian Vaussard } 507f58cb407SFlorian Vaussard 508f58cb407SFlorian Vaussard return 0; 509f58cb407SFlorian Vaussard } 510f58cb407SFlorian Vaussard 511f58cb407SFlorian Vaussard int twl4030_power_configure_resources(struct twl4030_power_data *pdata) 512f58cb407SFlorian Vaussard { 513f58cb407SFlorian Vaussard struct twl4030_resconfig *resconfig = pdata->resource_config; 514f58cb407SFlorian Vaussard int err; 515f58cb407SFlorian Vaussard 516f58cb407SFlorian Vaussard if (resconfig) { 517f58cb407SFlorian Vaussard while (resconfig->resource) { 518f58cb407SFlorian Vaussard err = twl4030_configure_resource(resconfig); 519f58cb407SFlorian Vaussard if (err) 520f58cb407SFlorian Vaussard return err; 521f58cb407SFlorian Vaussard resconfig++; 522f58cb407SFlorian Vaussard } 523f58cb407SFlorian Vaussard } 524f58cb407SFlorian Vaussard 525f58cb407SFlorian Vaussard return 0; 526f58cb407SFlorian Vaussard } 527f58cb407SFlorian Vaussard 52826cc3ab9SIgor Grinberg /* 52926cc3ab9SIgor Grinberg * In master mode, start the power off sequence. 53026cc3ab9SIgor Grinberg * After a successful execution, TWL shuts down the power to the SoC 53126cc3ab9SIgor Grinberg * and all peripherals connected to it. 53226cc3ab9SIgor Grinberg */ 53326cc3ab9SIgor Grinberg void twl4030_power_off(void) 53426cc3ab9SIgor Grinberg { 53526cc3ab9SIgor Grinberg int err; 53626cc3ab9SIgor Grinberg 5374850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, PWR_DEVOFF, 53826cc3ab9SIgor Grinberg TWL4030_PM_MASTER_P1_SW_EVENTS); 53926cc3ab9SIgor Grinberg if (err) 54026cc3ab9SIgor Grinberg pr_err("TWL4030 Unable to power off\n"); 54126cc3ab9SIgor Grinberg } 54226cc3ab9SIgor Grinberg 543637d6895SFlorian Vaussard int twl4030_power_probe(struct platform_device *pdev) 544ebf0bd36SAmit Kucheria { 545637d6895SFlorian Vaussard struct twl4030_power_data *pdata = pdev->dev.platform_data; 546ebf0bd36SAmit Kucheria int err = 0; 547f58cb407SFlorian Vaussard u8 val; 548ebf0bd36SAmit Kucheria 5494850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1, 55071084406SFelipe Balbi TWL4030_PM_MASTER_PROTECT_KEY); 551ebf0bd36SAmit Kucheria if (err) 552ebf0bd36SAmit Kucheria goto unlock; 553ebf0bd36SAmit Kucheria 5544850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG2, 55571084406SFelipe Balbi TWL4030_PM_MASTER_PROTECT_KEY); 556ebf0bd36SAmit Kucheria if (err) 557ebf0bd36SAmit Kucheria goto unlock; 558ebf0bd36SAmit Kucheria 559f58cb407SFlorian Vaussard err = twl4030_power_configure_scripts(pdata); 560ebf0bd36SAmit Kucheria if (err) 561ebf0bd36SAmit Kucheria goto load; 562f58cb407SFlorian Vaussard err = twl4030_power_configure_resources(pdata); 563ebf0bd36SAmit Kucheria if (err) 564ebf0bd36SAmit Kucheria goto resource; 565ebf0bd36SAmit Kucheria 56626cc3ab9SIgor Grinberg /* Board has to be wired properly to use this feature */ 567637d6895SFlorian Vaussard if (pdata->use_poweroff && !pm_power_off) { 56826cc3ab9SIgor Grinberg /* Default for SEQ_OFFSYNC is set, lets ensure this */ 5694850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &val, 57026cc3ab9SIgor Grinberg TWL4030_PM_MASTER_CFG_P123_TRANSITION); 57126cc3ab9SIgor Grinberg if (err) { 57226cc3ab9SIgor Grinberg pr_warning("TWL4030 Unable to read registers\n"); 57326cc3ab9SIgor Grinberg 57426cc3ab9SIgor Grinberg } else if (!(val & SEQ_OFFSYNC)) { 57526cc3ab9SIgor Grinberg val |= SEQ_OFFSYNC; 5764850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, val, 57726cc3ab9SIgor Grinberg TWL4030_PM_MASTER_CFG_P123_TRANSITION); 57826cc3ab9SIgor Grinberg if (err) { 57926cc3ab9SIgor Grinberg pr_err("TWL4030 Unable to setup SEQ_OFFSYNC\n"); 58026cc3ab9SIgor Grinberg goto relock; 58126cc3ab9SIgor Grinberg } 58226cc3ab9SIgor Grinberg } 58326cc3ab9SIgor Grinberg 58426cc3ab9SIgor Grinberg pm_power_off = twl4030_power_off; 58526cc3ab9SIgor Grinberg } 58626cc3ab9SIgor Grinberg 58726cc3ab9SIgor Grinberg relock: 5884850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0, 58971084406SFelipe Balbi TWL4030_PM_MASTER_PROTECT_KEY); 590ebf0bd36SAmit Kucheria if (err) 591ebf0bd36SAmit Kucheria pr_err("TWL4030 Unable to relock registers\n"); 592637d6895SFlorian Vaussard return err; 593ebf0bd36SAmit Kucheria 594ebf0bd36SAmit Kucheria unlock: 595ebf0bd36SAmit Kucheria if (err) 596ebf0bd36SAmit Kucheria pr_err("TWL4030 Unable to unlock registers\n"); 597637d6895SFlorian Vaussard return err; 598ebf0bd36SAmit Kucheria load: 599ebf0bd36SAmit Kucheria if (err) 600ebf0bd36SAmit Kucheria pr_err("TWL4030 failed to load scripts\n"); 601637d6895SFlorian Vaussard return err; 602ebf0bd36SAmit Kucheria resource: 603ebf0bd36SAmit Kucheria if (err) 604ebf0bd36SAmit Kucheria pr_err("TWL4030 failed to configure resource\n"); 605637d6895SFlorian Vaussard return err; 606ebf0bd36SAmit Kucheria } 607637d6895SFlorian Vaussard 608637d6895SFlorian Vaussard static int twl4030_power_remove(struct platform_device *pdev) 609637d6895SFlorian Vaussard { 610637d6895SFlorian Vaussard return 0; 611637d6895SFlorian Vaussard } 612637d6895SFlorian Vaussard 613637d6895SFlorian Vaussard static struct platform_driver twl4030_power_driver = { 614637d6895SFlorian Vaussard .driver = { 615637d6895SFlorian Vaussard .name = "twl4030_power", 616637d6895SFlorian Vaussard .owner = THIS_MODULE, 617637d6895SFlorian Vaussard }, 618637d6895SFlorian Vaussard .probe = twl4030_power_probe, 619637d6895SFlorian Vaussard .remove = twl4030_power_remove, 620637d6895SFlorian Vaussard }; 621637d6895SFlorian Vaussard 622637d6895SFlorian Vaussard module_platform_driver(twl4030_power_driver); 623637d6895SFlorian Vaussard 624637d6895SFlorian Vaussard MODULE_AUTHOR("Nokia Corporation"); 625637d6895SFlorian Vaussard MODULE_AUTHOR("Texas Instruments, Inc."); 626637d6895SFlorian Vaussard MODULE_DESCRIPTION("Power management for TWL4030"); 627637d6895SFlorian Vaussard MODULE_LICENSE("GPL"); 628637d6895SFlorian Vaussard MODULE_ALIAS("platform:twl4030_power"); 629