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 3732057281STony Lindgren /* Register bits for P1, P2 and P3_SW_EVENTS */ 3832057281STony Lindgren #define PWR_STOPON_PRWON BIT(6) 3932057281STony Lindgren #define PWR_STOPON_SYSEN BIT(5) 4032057281STony Lindgren #define PWR_ENABLE_WARMRESET BIT(4) 4132057281STony Lindgren #define PWR_LVL_WAKEUP BIT(3) 4232057281STony Lindgren #define PWR_DEVACT BIT(2) 4332057281STony Lindgren #define PWR_DEVSLP BIT(1) 4432057281STony Lindgren #define PWR_DEVOFF BIT(0) 4532057281STony Lindgren 4626cc3ab9SIgor Grinberg #define SEQ_OFFSYNC (1 << 0) 47ebf0bd36SAmit Kucheria 48ebf0bd36SAmit Kucheria #define PHY_TO_OFF_PM_MASTER(p) (p - 0x36) 49ebf0bd36SAmit Kucheria #define PHY_TO_OFF_PM_RECEIVER(p) (p - 0x5b) 50ebf0bd36SAmit Kucheria 51ebf0bd36SAmit Kucheria /* resource - hfclk */ 52ebf0bd36SAmit Kucheria #define R_HFCLKOUT_DEV_GRP PHY_TO_OFF_PM_RECEIVER(0xe6) 53ebf0bd36SAmit Kucheria 54ebf0bd36SAmit Kucheria /* PM events */ 55ebf0bd36SAmit Kucheria #define R_P1_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x46) 56ebf0bd36SAmit Kucheria #define R_P2_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x47) 57ebf0bd36SAmit Kucheria #define R_P3_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x48) 58ebf0bd36SAmit Kucheria #define R_CFG_P1_TRANSITION PHY_TO_OFF_PM_MASTER(0x36) 59ebf0bd36SAmit Kucheria #define R_CFG_P2_TRANSITION PHY_TO_OFF_PM_MASTER(0x37) 60ebf0bd36SAmit Kucheria #define R_CFG_P3_TRANSITION PHY_TO_OFF_PM_MASTER(0x38) 61ebf0bd36SAmit Kucheria 62ebf0bd36SAmit Kucheria #define END_OF_SCRIPT 0x3f 63ebf0bd36SAmit Kucheria 64ebf0bd36SAmit Kucheria #define R_SEQ_ADD_A2S PHY_TO_OFF_PM_MASTER(0x55) 65ebf0bd36SAmit Kucheria #define R_SEQ_ADD_S2A12 PHY_TO_OFF_PM_MASTER(0x56) 66ebf0bd36SAmit Kucheria #define R_SEQ_ADD_S2A3 PHY_TO_OFF_PM_MASTER(0x57) 67ebf0bd36SAmit Kucheria #define R_SEQ_ADD_WARM PHY_TO_OFF_PM_MASTER(0x58) 68ebf0bd36SAmit Kucheria #define R_MEMORY_ADDRESS PHY_TO_OFF_PM_MASTER(0x59) 69ebf0bd36SAmit Kucheria #define R_MEMORY_DATA PHY_TO_OFF_PM_MASTER(0x5a) 70ebf0bd36SAmit Kucheria 71890463f0SAmit Kucheria /* resource configuration registers 72890463f0SAmit Kucheria <RESOURCE>_DEV_GRP at address 'n+0' 73890463f0SAmit Kucheria <RESOURCE>_TYPE at address 'n+1' 74890463f0SAmit Kucheria <RESOURCE>_REMAP at address 'n+2' 75890463f0SAmit Kucheria <RESOURCE>_DEDICATED at address 'n+3' 76890463f0SAmit Kucheria */ 77e97d1546SAmit Kucheria #define DEV_GRP_OFFSET 0 78ebf0bd36SAmit Kucheria #define TYPE_OFFSET 1 79b4ead61eSAmit Kucheria #define REMAP_OFFSET 2 80b4ead61eSAmit Kucheria #define DEDICATED_OFFSET 3 81ebf0bd36SAmit Kucheria 82e97d1546SAmit Kucheria /* Bit positions in the registers */ 83890463f0SAmit Kucheria 84890463f0SAmit Kucheria /* <RESOURCE>_DEV_GRP */ 85e97d1546SAmit Kucheria #define DEV_GRP_SHIFT 5 86e97d1546SAmit Kucheria #define DEV_GRP_MASK (7 << DEV_GRP_SHIFT) 87890463f0SAmit Kucheria 88890463f0SAmit Kucheria /* <RESOURCE>_TYPE */ 89ebf0bd36SAmit Kucheria #define TYPE_SHIFT 0 90ebf0bd36SAmit Kucheria #define TYPE_MASK (7 << TYPE_SHIFT) 91ebf0bd36SAmit Kucheria #define TYPE2_SHIFT 3 92ebf0bd36SAmit Kucheria #define TYPE2_MASK (3 << TYPE2_SHIFT) 93ebf0bd36SAmit Kucheria 94b4ead61eSAmit Kucheria /* <RESOURCE>_REMAP */ 95b4ead61eSAmit Kucheria #define SLEEP_STATE_SHIFT 0 96b4ead61eSAmit Kucheria #define SLEEP_STATE_MASK (0xf << SLEEP_STATE_SHIFT) 97b4ead61eSAmit Kucheria #define OFF_STATE_SHIFT 4 98b4ead61eSAmit Kucheria #define OFF_STATE_MASK (0xf << OFF_STATE_SHIFT) 99b4ead61eSAmit Kucheria 100ebf0bd36SAmit Kucheria static u8 res_config_addrs[] = { 101ebf0bd36SAmit Kucheria [RES_VAUX1] = 0x17, 102ebf0bd36SAmit Kucheria [RES_VAUX2] = 0x1b, 103ebf0bd36SAmit Kucheria [RES_VAUX3] = 0x1f, 104ebf0bd36SAmit Kucheria [RES_VAUX4] = 0x23, 105ebf0bd36SAmit Kucheria [RES_VMMC1] = 0x27, 106ebf0bd36SAmit Kucheria [RES_VMMC2] = 0x2b, 107ebf0bd36SAmit Kucheria [RES_VPLL1] = 0x2f, 108ebf0bd36SAmit Kucheria [RES_VPLL2] = 0x33, 109ebf0bd36SAmit Kucheria [RES_VSIM] = 0x37, 110ebf0bd36SAmit Kucheria [RES_VDAC] = 0x3b, 111ebf0bd36SAmit Kucheria [RES_VINTANA1] = 0x3f, 112ebf0bd36SAmit Kucheria [RES_VINTANA2] = 0x43, 113ebf0bd36SAmit Kucheria [RES_VINTDIG] = 0x47, 114ebf0bd36SAmit Kucheria [RES_VIO] = 0x4b, 115ebf0bd36SAmit Kucheria [RES_VDD1] = 0x55, 116ebf0bd36SAmit Kucheria [RES_VDD2] = 0x63, 117ebf0bd36SAmit Kucheria [RES_VUSB_1V5] = 0x71, 118ebf0bd36SAmit Kucheria [RES_VUSB_1V8] = 0x74, 119ebf0bd36SAmit Kucheria [RES_VUSB_3V1] = 0x77, 120ebf0bd36SAmit Kucheria [RES_VUSBCP] = 0x7a, 121ebf0bd36SAmit Kucheria [RES_REGEN] = 0x7f, 122ebf0bd36SAmit Kucheria [RES_NRES_PWRON] = 0x82, 123ebf0bd36SAmit Kucheria [RES_CLKEN] = 0x85, 124ebf0bd36SAmit Kucheria [RES_SYSEN] = 0x88, 125ebf0bd36SAmit Kucheria [RES_HFCLKOUT] = 0x8b, 126ebf0bd36SAmit Kucheria [RES_32KCLKOUT] = 0x8e, 127ebf0bd36SAmit Kucheria [RES_RESET] = 0x91, 128d7ac829fSLesly A M [RES_MAIN_REF] = 0x94, 129ebf0bd36SAmit Kucheria }; 130ebf0bd36SAmit Kucheria 131f791be49SBill Pemberton static int twl4030_write_script_byte(u8 address, u8 byte) 132ebf0bd36SAmit Kucheria { 133ebf0bd36SAmit Kucheria int err; 134ebf0bd36SAmit Kucheria 1354850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_MEMORY_ADDRESS); 136ebf0bd36SAmit Kucheria if (err) 137ebf0bd36SAmit Kucheria goto out; 1384850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, byte, R_MEMORY_DATA); 139ebf0bd36SAmit Kucheria out: 140ebf0bd36SAmit Kucheria return err; 141ebf0bd36SAmit Kucheria } 142ebf0bd36SAmit Kucheria 143f791be49SBill Pemberton static int twl4030_write_script_ins(u8 address, u16 pmb_message, 144ebf0bd36SAmit Kucheria u8 delay, u8 next) 145ebf0bd36SAmit Kucheria { 146ebf0bd36SAmit Kucheria int err; 147ebf0bd36SAmit Kucheria 148ebf0bd36SAmit Kucheria address *= 4; 149ebf0bd36SAmit Kucheria err = twl4030_write_script_byte(address++, pmb_message >> 8); 150ebf0bd36SAmit Kucheria if (err) 151ebf0bd36SAmit Kucheria goto out; 152ebf0bd36SAmit Kucheria err = twl4030_write_script_byte(address++, pmb_message & 0xff); 153ebf0bd36SAmit Kucheria if (err) 154ebf0bd36SAmit Kucheria goto out; 155ebf0bd36SAmit Kucheria err = twl4030_write_script_byte(address++, delay); 156ebf0bd36SAmit Kucheria if (err) 157ebf0bd36SAmit Kucheria goto out; 158ebf0bd36SAmit Kucheria err = twl4030_write_script_byte(address++, next); 159ebf0bd36SAmit Kucheria out: 160ebf0bd36SAmit Kucheria return err; 161ebf0bd36SAmit Kucheria } 162ebf0bd36SAmit Kucheria 163f791be49SBill Pemberton static int twl4030_write_script(u8 address, struct twl4030_ins *script, 164ebf0bd36SAmit Kucheria int len) 165ebf0bd36SAmit Kucheria { 166f65e9eacSArnd Bergmann int err = -EINVAL; 167ebf0bd36SAmit Kucheria 168ebf0bd36SAmit Kucheria for (; len; len--, address++, script++) { 169ebf0bd36SAmit Kucheria if (len == 1) { 170ebf0bd36SAmit Kucheria err = twl4030_write_script_ins(address, 171ebf0bd36SAmit Kucheria script->pmb_message, 172ebf0bd36SAmit Kucheria script->delay, 173ebf0bd36SAmit Kucheria END_OF_SCRIPT); 174ebf0bd36SAmit Kucheria if (err) 175ebf0bd36SAmit Kucheria break; 176ebf0bd36SAmit Kucheria } else { 177ebf0bd36SAmit Kucheria err = twl4030_write_script_ins(address, 178ebf0bd36SAmit Kucheria script->pmb_message, 179ebf0bd36SAmit Kucheria script->delay, 180ebf0bd36SAmit Kucheria address + 1); 181ebf0bd36SAmit Kucheria if (err) 182ebf0bd36SAmit Kucheria break; 183ebf0bd36SAmit Kucheria } 184ebf0bd36SAmit Kucheria } 185ebf0bd36SAmit Kucheria return err; 186ebf0bd36SAmit Kucheria } 187ebf0bd36SAmit Kucheria 188f791be49SBill Pemberton static int twl4030_config_wakeup3_sequence(u8 address) 189ebf0bd36SAmit Kucheria { 190ebf0bd36SAmit Kucheria int err; 191ebf0bd36SAmit Kucheria u8 data; 192ebf0bd36SAmit Kucheria 193ebf0bd36SAmit Kucheria /* Set SLEEP to ACTIVE SEQ address for P3 */ 1944850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_S2A3); 195ebf0bd36SAmit Kucheria if (err) 196ebf0bd36SAmit Kucheria goto out; 197ebf0bd36SAmit Kucheria 198ebf0bd36SAmit Kucheria /* P3 LVL_WAKEUP should be on LEVEL */ 1994850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data, R_P3_SW_EVENTS); 200ebf0bd36SAmit Kucheria if (err) 201ebf0bd36SAmit Kucheria goto out; 20232057281STony Lindgren data |= PWR_LVL_WAKEUP; 2034850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, data, R_P3_SW_EVENTS); 204ebf0bd36SAmit Kucheria out: 205ebf0bd36SAmit Kucheria if (err) 206ebf0bd36SAmit Kucheria pr_err("TWL4030 wakeup sequence for P3 config error\n"); 207ebf0bd36SAmit Kucheria return err; 208ebf0bd36SAmit Kucheria } 209ebf0bd36SAmit Kucheria 210f791be49SBill Pemberton static int twl4030_config_wakeup12_sequence(u8 address) 211ebf0bd36SAmit Kucheria { 212ebf0bd36SAmit Kucheria int err = 0; 213ebf0bd36SAmit Kucheria u8 data; 214ebf0bd36SAmit Kucheria 215ebf0bd36SAmit Kucheria /* Set SLEEP to ACTIVE SEQ address for P1 and P2 */ 2164850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_S2A12); 217ebf0bd36SAmit Kucheria if (err) 218ebf0bd36SAmit Kucheria goto out; 219ebf0bd36SAmit Kucheria 220ebf0bd36SAmit Kucheria /* P1/P2 LVL_WAKEUP should be on LEVEL */ 2214850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data, R_P1_SW_EVENTS); 222ebf0bd36SAmit Kucheria if (err) 223ebf0bd36SAmit Kucheria goto out; 224ebf0bd36SAmit Kucheria 22532057281STony Lindgren data |= PWR_LVL_WAKEUP; 2264850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, data, R_P1_SW_EVENTS); 227ebf0bd36SAmit Kucheria if (err) 228ebf0bd36SAmit Kucheria goto out; 229ebf0bd36SAmit Kucheria 2304850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data, R_P2_SW_EVENTS); 231ebf0bd36SAmit Kucheria if (err) 232ebf0bd36SAmit Kucheria goto out; 233ebf0bd36SAmit Kucheria 23432057281STony Lindgren data |= PWR_LVL_WAKEUP; 2354850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, data, R_P2_SW_EVENTS); 236ebf0bd36SAmit Kucheria if (err) 237ebf0bd36SAmit Kucheria goto out; 238ebf0bd36SAmit Kucheria 239ebf0bd36SAmit Kucheria if (machine_is_omap_3430sdp() || machine_is_omap_ldp()) { 240ebf0bd36SAmit Kucheria /* Disabling AC charger effect on sleep-active transitions */ 2414850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data, 242ebf0bd36SAmit Kucheria R_CFG_P1_TRANSITION); 243ebf0bd36SAmit Kucheria if (err) 244ebf0bd36SAmit Kucheria goto out; 245ebf0bd36SAmit Kucheria data &= ~(1<<1); 2464850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, data, 247ebf0bd36SAmit Kucheria R_CFG_P1_TRANSITION); 248ebf0bd36SAmit Kucheria if (err) 249ebf0bd36SAmit Kucheria goto out; 250ebf0bd36SAmit Kucheria } 251ebf0bd36SAmit Kucheria 252ebf0bd36SAmit Kucheria out: 253ebf0bd36SAmit Kucheria if (err) 254ebf0bd36SAmit Kucheria pr_err("TWL4030 wakeup sequence for P1 and P2" \ 255ebf0bd36SAmit Kucheria "config error\n"); 256ebf0bd36SAmit Kucheria return err; 257ebf0bd36SAmit Kucheria } 258ebf0bd36SAmit Kucheria 259f791be49SBill Pemberton static int twl4030_config_sleep_sequence(u8 address) 260ebf0bd36SAmit Kucheria { 261ebf0bd36SAmit Kucheria int err; 262ebf0bd36SAmit Kucheria 263ebf0bd36SAmit Kucheria /* Set ACTIVE to SLEEP SEQ address in T2 memory*/ 2644850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_A2S); 265ebf0bd36SAmit Kucheria 266ebf0bd36SAmit Kucheria if (err) 267ebf0bd36SAmit Kucheria pr_err("TWL4030 sleep sequence config error\n"); 268ebf0bd36SAmit Kucheria 269ebf0bd36SAmit Kucheria return err; 270ebf0bd36SAmit Kucheria } 271ebf0bd36SAmit Kucheria 272f791be49SBill Pemberton static int twl4030_config_warmreset_sequence(u8 address) 273ebf0bd36SAmit Kucheria { 274ebf0bd36SAmit Kucheria int err; 275ebf0bd36SAmit Kucheria u8 rd_data; 276ebf0bd36SAmit Kucheria 277ebf0bd36SAmit Kucheria /* Set WARM RESET SEQ address for P1 */ 2784850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_WARM); 279ebf0bd36SAmit Kucheria if (err) 280ebf0bd36SAmit Kucheria goto out; 281ebf0bd36SAmit Kucheria 282ebf0bd36SAmit Kucheria /* P1/P2/P3 enable WARMRESET */ 2834850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &rd_data, R_P1_SW_EVENTS); 284ebf0bd36SAmit Kucheria if (err) 285ebf0bd36SAmit Kucheria goto out; 286ebf0bd36SAmit Kucheria 28732057281STony Lindgren rd_data |= PWR_ENABLE_WARMRESET; 2884850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, rd_data, R_P1_SW_EVENTS); 289ebf0bd36SAmit Kucheria if (err) 290ebf0bd36SAmit Kucheria goto out; 291ebf0bd36SAmit Kucheria 2924850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &rd_data, R_P2_SW_EVENTS); 293ebf0bd36SAmit Kucheria if (err) 294ebf0bd36SAmit Kucheria goto out; 295ebf0bd36SAmit Kucheria 29632057281STony Lindgren rd_data |= PWR_ENABLE_WARMRESET; 2974850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, rd_data, R_P2_SW_EVENTS); 298ebf0bd36SAmit Kucheria if (err) 299ebf0bd36SAmit Kucheria goto out; 300ebf0bd36SAmit Kucheria 3014850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &rd_data, R_P3_SW_EVENTS); 302ebf0bd36SAmit Kucheria if (err) 303ebf0bd36SAmit Kucheria goto out; 304ebf0bd36SAmit Kucheria 30532057281STony Lindgren rd_data |= PWR_ENABLE_WARMRESET; 3064850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, rd_data, R_P3_SW_EVENTS); 307ebf0bd36SAmit Kucheria out: 308ebf0bd36SAmit Kucheria if (err) 309ebf0bd36SAmit Kucheria pr_err("TWL4030 warmreset seq config error\n"); 310ebf0bd36SAmit Kucheria return err; 311ebf0bd36SAmit Kucheria } 312ebf0bd36SAmit Kucheria 313f791be49SBill Pemberton static int twl4030_configure_resource(struct twl4030_resconfig *rconfig) 314ebf0bd36SAmit Kucheria { 315ebf0bd36SAmit Kucheria int rconfig_addr; 316ebf0bd36SAmit Kucheria int err; 317ebf0bd36SAmit Kucheria u8 type; 318ebf0bd36SAmit Kucheria u8 grp; 319b4ead61eSAmit Kucheria u8 remap; 320ebf0bd36SAmit Kucheria 321ebf0bd36SAmit Kucheria if (rconfig->resource > TOTAL_RESOURCES) { 322ebf0bd36SAmit Kucheria pr_err("TWL4030 Resource %d does not exist\n", 323ebf0bd36SAmit Kucheria rconfig->resource); 324ebf0bd36SAmit Kucheria return -EINVAL; 325ebf0bd36SAmit Kucheria } 326ebf0bd36SAmit Kucheria 327ebf0bd36SAmit Kucheria rconfig_addr = res_config_addrs[rconfig->resource]; 328ebf0bd36SAmit Kucheria 329ebf0bd36SAmit Kucheria /* Set resource group */ 3304850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &grp, 331e97d1546SAmit Kucheria rconfig_addr + DEV_GRP_OFFSET); 332ebf0bd36SAmit Kucheria if (err) { 333ebf0bd36SAmit Kucheria pr_err("TWL4030 Resource %d group could not be read\n", 334ebf0bd36SAmit Kucheria rconfig->resource); 335ebf0bd36SAmit Kucheria return err; 336ebf0bd36SAmit Kucheria } 337ebf0bd36SAmit Kucheria 33856baa667SAaro Koskinen if (rconfig->devgroup != TWL4030_RESCONFIG_UNDEF) { 339e97d1546SAmit Kucheria grp &= ~DEV_GRP_MASK; 340e97d1546SAmit Kucheria grp |= rconfig->devgroup << DEV_GRP_SHIFT; 3414850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 342e97d1546SAmit Kucheria grp, rconfig_addr + DEV_GRP_OFFSET); 343ebf0bd36SAmit Kucheria if (err < 0) { 344ebf0bd36SAmit Kucheria pr_err("TWL4030 failed to program devgroup\n"); 345ebf0bd36SAmit Kucheria return err; 346ebf0bd36SAmit Kucheria } 347ebf0bd36SAmit Kucheria } 348ebf0bd36SAmit Kucheria 349ebf0bd36SAmit Kucheria /* Set resource types */ 3504850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &type, 351ebf0bd36SAmit Kucheria rconfig_addr + TYPE_OFFSET); 352ebf0bd36SAmit Kucheria if (err < 0) { 353ebf0bd36SAmit Kucheria pr_err("TWL4030 Resource %d type could not be read\n", 354ebf0bd36SAmit Kucheria rconfig->resource); 355ebf0bd36SAmit Kucheria return err; 356ebf0bd36SAmit Kucheria } 357ebf0bd36SAmit Kucheria 35856baa667SAaro Koskinen if (rconfig->type != TWL4030_RESCONFIG_UNDEF) { 359ebf0bd36SAmit Kucheria type &= ~TYPE_MASK; 360ebf0bd36SAmit Kucheria type |= rconfig->type << TYPE_SHIFT; 361ebf0bd36SAmit Kucheria } 362ebf0bd36SAmit Kucheria 36356baa667SAaro Koskinen if (rconfig->type2 != TWL4030_RESCONFIG_UNDEF) { 364ebf0bd36SAmit Kucheria type &= ~TYPE2_MASK; 365ebf0bd36SAmit Kucheria type |= rconfig->type2 << TYPE2_SHIFT; 366ebf0bd36SAmit Kucheria } 367ebf0bd36SAmit Kucheria 3684850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 369ebf0bd36SAmit Kucheria type, rconfig_addr + TYPE_OFFSET); 370ebf0bd36SAmit Kucheria if (err < 0) { 371ebf0bd36SAmit Kucheria pr_err("TWL4030 failed to program resource type\n"); 372ebf0bd36SAmit Kucheria return err; 373ebf0bd36SAmit Kucheria } 374ebf0bd36SAmit Kucheria 375b4ead61eSAmit Kucheria /* Set remap states */ 3764850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &remap, 377b4ead61eSAmit Kucheria rconfig_addr + REMAP_OFFSET); 378b4ead61eSAmit Kucheria if (err < 0) { 379b4ead61eSAmit Kucheria pr_err("TWL4030 Resource %d remap could not be read\n", 380b4ead61eSAmit Kucheria rconfig->resource); 381b4ead61eSAmit Kucheria return err; 382b4ead61eSAmit Kucheria } 383b4ead61eSAmit Kucheria 38453cf9a60SAmit Kucheria if (rconfig->remap_off != TWL4030_RESCONFIG_UNDEF) { 385b4ead61eSAmit Kucheria remap &= ~OFF_STATE_MASK; 386b4ead61eSAmit Kucheria remap |= rconfig->remap_off << OFF_STATE_SHIFT; 387b4ead61eSAmit Kucheria } 388b4ead61eSAmit Kucheria 38953cf9a60SAmit Kucheria if (rconfig->remap_sleep != TWL4030_RESCONFIG_UNDEF) { 390b4ead61eSAmit Kucheria remap &= ~SLEEP_STATE_MASK; 3911ea933f4SMike Turquette remap |= rconfig->remap_sleep << SLEEP_STATE_SHIFT; 392b4ead61eSAmit Kucheria } 393b4ead61eSAmit Kucheria 3944850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 395b4ead61eSAmit Kucheria remap, 396b4ead61eSAmit Kucheria rconfig_addr + REMAP_OFFSET); 397b4ead61eSAmit Kucheria if (err < 0) { 398b4ead61eSAmit Kucheria pr_err("TWL4030 failed to program remap\n"); 399b4ead61eSAmit Kucheria return err; 400b4ead61eSAmit Kucheria } 401b4ead61eSAmit Kucheria 402ebf0bd36SAmit Kucheria return 0; 403ebf0bd36SAmit Kucheria } 404ebf0bd36SAmit Kucheria 405f791be49SBill Pemberton static int load_twl4030_script(struct twl4030_script *tscript, 406ebf0bd36SAmit Kucheria u8 address) 407ebf0bd36SAmit Kucheria { 408ebf0bd36SAmit Kucheria int err; 40975a74565SAmit Kucheria static int order; 410ebf0bd36SAmit Kucheria 411ebf0bd36SAmit Kucheria /* Make sure the script isn't going beyond last valid address (0x3f) */ 412ebf0bd36SAmit Kucheria if ((address + tscript->size) > END_OF_SCRIPT) { 413ebf0bd36SAmit Kucheria pr_err("TWL4030 scripts too big error\n"); 414ebf0bd36SAmit Kucheria return -EINVAL; 415ebf0bd36SAmit Kucheria } 416ebf0bd36SAmit Kucheria 417ebf0bd36SAmit Kucheria err = twl4030_write_script(address, tscript->script, tscript->size); 418ebf0bd36SAmit Kucheria if (err) 419ebf0bd36SAmit Kucheria goto out; 420ebf0bd36SAmit Kucheria 421ebf0bd36SAmit Kucheria if (tscript->flags & TWL4030_WRST_SCRIPT) { 422ebf0bd36SAmit Kucheria err = twl4030_config_warmreset_sequence(address); 423ebf0bd36SAmit Kucheria if (err) 424ebf0bd36SAmit Kucheria goto out; 425ebf0bd36SAmit Kucheria } 426ebf0bd36SAmit Kucheria if (tscript->flags & TWL4030_WAKEUP12_SCRIPT) { 427fc7d76e4STony Lindgren /* Reset any existing sleep script to avoid hangs on reboot */ 428fc7d76e4STony Lindgren err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT, 429fc7d76e4STony Lindgren R_SEQ_ADD_A2S); 430fc7d76e4STony Lindgren if (err) 431fc7d76e4STony Lindgren goto out; 432fc7d76e4STony Lindgren 433ebf0bd36SAmit Kucheria err = twl4030_config_wakeup12_sequence(address); 434ebf0bd36SAmit Kucheria if (err) 435ebf0bd36SAmit Kucheria goto out; 43675a74565SAmit Kucheria order = 1; 437ebf0bd36SAmit Kucheria } 438ebf0bd36SAmit Kucheria if (tscript->flags & TWL4030_WAKEUP3_SCRIPT) { 439ebf0bd36SAmit Kucheria err = twl4030_config_wakeup3_sequence(address); 440ebf0bd36SAmit Kucheria if (err) 441ebf0bd36SAmit Kucheria goto out; 442ebf0bd36SAmit Kucheria } 443c62dd365SLesly A M if (tscript->flags & TWL4030_SLEEP_SCRIPT) { 4441f968ff6SLesly A M if (!order) 44575a74565SAmit Kucheria pr_warning("TWL4030: Bad order of scripts (sleep "\ 44675a74565SAmit Kucheria "script before wakeup) Leads to boot"\ 44775a74565SAmit Kucheria "failure on some boards\n"); 448ebf0bd36SAmit Kucheria err = twl4030_config_sleep_sequence(address); 449c62dd365SLesly A M } 450ebf0bd36SAmit Kucheria out: 451ebf0bd36SAmit Kucheria return err; 452ebf0bd36SAmit Kucheria } 453ebf0bd36SAmit Kucheria 45411a441ceSMike Turquette int twl4030_remove_script(u8 flags) 45511a441ceSMike Turquette { 45611a441ceSMike Turquette int err = 0; 45711a441ceSMike Turquette 4584850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1, 45971084406SFelipe Balbi TWL4030_PM_MASTER_PROTECT_KEY); 46011a441ceSMike Turquette if (err) { 46111a441ceSMike Turquette pr_err("twl4030: unable to unlock PROTECT_KEY\n"); 46211a441ceSMike Turquette return err; 46311a441ceSMike Turquette } 46411a441ceSMike Turquette 4654850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG2, 46671084406SFelipe Balbi TWL4030_PM_MASTER_PROTECT_KEY); 46711a441ceSMike Turquette if (err) { 46811a441ceSMike Turquette pr_err("twl4030: unable to unlock PROTECT_KEY\n"); 46911a441ceSMike Turquette return err; 47011a441ceSMike Turquette } 47111a441ceSMike Turquette 47211a441ceSMike Turquette if (flags & TWL4030_WRST_SCRIPT) { 4734850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT, 47411a441ceSMike Turquette R_SEQ_ADD_WARM); 47511a441ceSMike Turquette if (err) 47611a441ceSMike Turquette return err; 47711a441ceSMike Turquette } 47811a441ceSMike Turquette if (flags & TWL4030_WAKEUP12_SCRIPT) { 4794850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT, 48011a441ceSMike Turquette R_SEQ_ADD_S2A12); 481eac78a21SLesly A M if (err) 48211a441ceSMike Turquette return err; 48311a441ceSMike Turquette } 48411a441ceSMike Turquette if (flags & TWL4030_WAKEUP3_SCRIPT) { 4854850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT, 48611a441ceSMike Turquette R_SEQ_ADD_S2A3); 48711a441ceSMike Turquette if (err) 48811a441ceSMike Turquette return err; 48911a441ceSMike Turquette } 49011a441ceSMike Turquette if (flags & TWL4030_SLEEP_SCRIPT) { 4914850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT, 49211a441ceSMike Turquette R_SEQ_ADD_A2S); 49311a441ceSMike Turquette if (err) 49411a441ceSMike Turquette return err; 49511a441ceSMike Turquette } 49611a441ceSMike Turquette 4974850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0, 49871084406SFelipe Balbi TWL4030_PM_MASTER_PROTECT_KEY); 49911a441ceSMike Turquette if (err) 50011a441ceSMike Turquette pr_err("TWL4030 Unable to relock registers\n"); 50111a441ceSMike Turquette 50211a441ceSMike Turquette return err; 50311a441ceSMike Turquette } 50411a441ceSMike Turquette 505fae01582SJingoo Han static int twl4030_power_configure_scripts(struct twl4030_power_data *pdata) 506f58cb407SFlorian Vaussard { 507f58cb407SFlorian Vaussard int err; 508f58cb407SFlorian Vaussard int i; 509f58cb407SFlorian Vaussard u8 address = twl4030_start_script_address; 510f58cb407SFlorian Vaussard 511f58cb407SFlorian Vaussard for (i = 0; i < pdata->num; i++) { 512f58cb407SFlorian Vaussard err = load_twl4030_script(pdata->scripts[i], address); 513f58cb407SFlorian Vaussard if (err) 514f58cb407SFlorian Vaussard return err; 515f58cb407SFlorian Vaussard address += pdata->scripts[i]->size; 516f58cb407SFlorian Vaussard } 517f58cb407SFlorian Vaussard 518f58cb407SFlorian Vaussard return 0; 519f58cb407SFlorian Vaussard } 520f58cb407SFlorian Vaussard 521fae01582SJingoo Han static int twl4030_power_configure_resources(struct twl4030_power_data *pdata) 522f58cb407SFlorian Vaussard { 523f58cb407SFlorian Vaussard struct twl4030_resconfig *resconfig = pdata->resource_config; 524f58cb407SFlorian Vaussard int err; 525f58cb407SFlorian Vaussard 526f58cb407SFlorian Vaussard if (resconfig) { 527f58cb407SFlorian Vaussard while (resconfig->resource) { 528f58cb407SFlorian Vaussard err = twl4030_configure_resource(resconfig); 529f58cb407SFlorian Vaussard if (err) 530f58cb407SFlorian Vaussard return err; 531f58cb407SFlorian Vaussard resconfig++; 532f58cb407SFlorian Vaussard } 533f58cb407SFlorian Vaussard } 534f58cb407SFlorian Vaussard 535f58cb407SFlorian Vaussard return 0; 536f58cb407SFlorian Vaussard } 537f58cb407SFlorian Vaussard 53826cc3ab9SIgor Grinberg /* 53926cc3ab9SIgor Grinberg * In master mode, start the power off sequence. 54026cc3ab9SIgor Grinberg * After a successful execution, TWL shuts down the power to the SoC 54126cc3ab9SIgor Grinberg * and all peripherals connected to it. 54226cc3ab9SIgor Grinberg */ 54326cc3ab9SIgor Grinberg void twl4030_power_off(void) 54426cc3ab9SIgor Grinberg { 54526cc3ab9SIgor Grinberg int err; 54626cc3ab9SIgor Grinberg 5474850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, PWR_DEVOFF, 54826cc3ab9SIgor Grinberg TWL4030_PM_MASTER_P1_SW_EVENTS); 54926cc3ab9SIgor Grinberg if (err) 55026cc3ab9SIgor Grinberg pr_err("TWL4030 Unable to power off\n"); 55126cc3ab9SIgor Grinberg } 55226cc3ab9SIgor Grinberg 553b0fc1da4SFlorian Vaussard static bool twl4030_power_use_poweroff(struct twl4030_power_data *pdata, 554b0fc1da4SFlorian Vaussard struct device_node *node) 555b0fc1da4SFlorian Vaussard { 556b0fc1da4SFlorian Vaussard if (pdata && pdata->use_poweroff) 557b0fc1da4SFlorian Vaussard return true; 558b0fc1da4SFlorian Vaussard 559b0fc1da4SFlorian Vaussard if (of_property_read_bool(node, "ti,use_poweroff")) 560b0fc1da4SFlorian Vaussard return true; 561b0fc1da4SFlorian Vaussard 562b0fc1da4SFlorian Vaussard return false; 563b0fc1da4SFlorian Vaussard } 564b0fc1da4SFlorian Vaussard 565fae01582SJingoo Han static int twl4030_power_probe(struct platform_device *pdev) 566ebf0bd36SAmit Kucheria { 567334a41ceSJingoo Han struct twl4030_power_data *pdata = dev_get_platdata(&pdev->dev); 568b0fc1da4SFlorian Vaussard struct device_node *node = pdev->dev.of_node; 569ebf0bd36SAmit Kucheria int err = 0; 570cb3cabd6SFlorian Vaussard int err2 = 0; 571f58cb407SFlorian Vaussard u8 val; 572ebf0bd36SAmit Kucheria 573b0fc1da4SFlorian Vaussard if (!pdata && !node) { 574b0fc1da4SFlorian Vaussard dev_err(&pdev->dev, "Platform data is missing\n"); 575b0fc1da4SFlorian Vaussard return -EINVAL; 576b0fc1da4SFlorian Vaussard } 577b0fc1da4SFlorian Vaussard 5784850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1, 57971084406SFelipe Balbi TWL4030_PM_MASTER_PROTECT_KEY); 580e77a4c2fSFlorian Vaussard err |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 581e77a4c2fSFlorian Vaussard TWL4030_PM_MASTER_KEY_CFG2, 58271084406SFelipe Balbi TWL4030_PM_MASTER_PROTECT_KEY); 583e77a4c2fSFlorian Vaussard 584e77a4c2fSFlorian Vaussard if (err) { 585e77a4c2fSFlorian Vaussard pr_err("TWL4030 Unable to unlock registers\n"); 586e77a4c2fSFlorian Vaussard return err; 587e77a4c2fSFlorian Vaussard } 588ebf0bd36SAmit Kucheria 589b0fc1da4SFlorian Vaussard if (pdata) { 590b0fc1da4SFlorian Vaussard /* TODO: convert to device tree */ 591f58cb407SFlorian Vaussard err = twl4030_power_configure_scripts(pdata); 592e77a4c2fSFlorian Vaussard if (err) { 593e77a4c2fSFlorian Vaussard pr_err("TWL4030 failed to load scripts\n"); 594cb3cabd6SFlorian Vaussard goto relock; 595e77a4c2fSFlorian Vaussard } 596f58cb407SFlorian Vaussard err = twl4030_power_configure_resources(pdata); 597e77a4c2fSFlorian Vaussard if (err) { 598e77a4c2fSFlorian Vaussard pr_err("TWL4030 failed to configure resource\n"); 599cb3cabd6SFlorian Vaussard goto relock; 600e77a4c2fSFlorian Vaussard } 601b0fc1da4SFlorian Vaussard } 602ebf0bd36SAmit Kucheria 60326cc3ab9SIgor Grinberg /* Board has to be wired properly to use this feature */ 604b0fc1da4SFlorian Vaussard if (twl4030_power_use_poweroff(pdata, node) && !pm_power_off) { 60526cc3ab9SIgor Grinberg /* Default for SEQ_OFFSYNC is set, lets ensure this */ 6064850f124SPeter Ujfalusi err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &val, 60726cc3ab9SIgor Grinberg TWL4030_PM_MASTER_CFG_P123_TRANSITION); 60826cc3ab9SIgor Grinberg if (err) { 60926cc3ab9SIgor Grinberg pr_warning("TWL4030 Unable to read registers\n"); 61026cc3ab9SIgor Grinberg 61126cc3ab9SIgor Grinberg } else if (!(val & SEQ_OFFSYNC)) { 61226cc3ab9SIgor Grinberg val |= SEQ_OFFSYNC; 6134850f124SPeter Ujfalusi err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, val, 61426cc3ab9SIgor Grinberg TWL4030_PM_MASTER_CFG_P123_TRANSITION); 61526cc3ab9SIgor Grinberg if (err) { 61626cc3ab9SIgor Grinberg pr_err("TWL4030 Unable to setup SEQ_OFFSYNC\n"); 61726cc3ab9SIgor Grinberg goto relock; 61826cc3ab9SIgor Grinberg } 61926cc3ab9SIgor Grinberg } 62026cc3ab9SIgor Grinberg 62126cc3ab9SIgor Grinberg pm_power_off = twl4030_power_off; 62226cc3ab9SIgor Grinberg } 62326cc3ab9SIgor Grinberg 62426cc3ab9SIgor Grinberg relock: 625cb3cabd6SFlorian Vaussard err2 = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0, 62671084406SFelipe Balbi TWL4030_PM_MASTER_PROTECT_KEY); 627cb3cabd6SFlorian Vaussard if (err2) { 628ebf0bd36SAmit Kucheria pr_err("TWL4030 Unable to relock registers\n"); 629cb3cabd6SFlorian Vaussard return err2; 630cb3cabd6SFlorian Vaussard } 631cb3cabd6SFlorian Vaussard 632637d6895SFlorian Vaussard return err; 633ebf0bd36SAmit Kucheria } 634637d6895SFlorian Vaussard 635637d6895SFlorian Vaussard static int twl4030_power_remove(struct platform_device *pdev) 636637d6895SFlorian Vaussard { 637637d6895SFlorian Vaussard return 0; 638637d6895SFlorian Vaussard } 639637d6895SFlorian Vaussard 640b0fc1da4SFlorian Vaussard #ifdef CONFIG_OF 641b0fc1da4SFlorian Vaussard static const struct of_device_id twl4030_power_of_match[] = { 642b0fc1da4SFlorian Vaussard {.compatible = "ti,twl4030-power", }, 643b0fc1da4SFlorian Vaussard { }, 644b0fc1da4SFlorian Vaussard }; 645b0fc1da4SFlorian Vaussard MODULE_DEVICE_TABLE(of, twl4030_power_of_match); 646b0fc1da4SFlorian Vaussard #endif 647b0fc1da4SFlorian Vaussard 648637d6895SFlorian Vaussard static struct platform_driver twl4030_power_driver = { 649637d6895SFlorian Vaussard .driver = { 650637d6895SFlorian Vaussard .name = "twl4030_power", 651637d6895SFlorian Vaussard .owner = THIS_MODULE, 652b0fc1da4SFlorian Vaussard .of_match_table = of_match_ptr(twl4030_power_of_match), 653637d6895SFlorian Vaussard }, 654637d6895SFlorian Vaussard .probe = twl4030_power_probe, 655637d6895SFlorian Vaussard .remove = twl4030_power_remove, 656637d6895SFlorian Vaussard }; 657637d6895SFlorian Vaussard 658637d6895SFlorian Vaussard module_platform_driver(twl4030_power_driver); 659637d6895SFlorian Vaussard 660637d6895SFlorian Vaussard MODULE_AUTHOR("Nokia Corporation"); 661637d6895SFlorian Vaussard MODULE_AUTHOR("Texas Instruments, Inc."); 662637d6895SFlorian Vaussard MODULE_DESCRIPTION("Power management for TWL4030"); 663637d6895SFlorian Vaussard MODULE_LICENSE("GPL"); 664637d6895SFlorian Vaussard MODULE_ALIAS("platform:twl4030_power"); 665