2 * linux/drivers/i2c/chips/twl4030-power.c
4 * Handle TWL4030 Power initialization
6 * Copyright (C) 2008 Nokia Corporation
7 * Copyright (C) 2006 Texas Instruments, Inc
9 * Written by Kalle Jokiniemi
10 * Peter De Schrijver <peter.de-schrijver@nokia.com>
11 * Several fixes by Amit Kucheria <amit.kucheria@verdurent.com>
13 * This file is subject to the terms and conditions of the GNU General
14 * Public License. See the file "COPYING" in the main directory of this
15 * archive for more details.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 #include <linux/module.h>
29 #include <linux/i2c/twl4030.h>
30 #include <linux/platform_device.h>
32 #include <asm/mach-types.h>
34 static u8 twl4030_start_script_address = 0x2b;
36 #define PWR_P1_SW_EVENTS 0x10
37 #define PWR_DEVOFF (1<<0)
39 #define PHY_TO_OFF_PM_MASTER(p) (p - 0x36)
40 #define PHY_TO_OFF_PM_RECEIVER(p) (p - 0x5b)
42 /* resource - hfclk */
43 #define R_HFCLKOUT_DEV_GRP PHY_TO_OFF_PM_RECEIVER(0xe6)
46 #define R_P1_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x46)
47 #define R_P2_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x47)
48 #define R_P3_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x48)
49 #define R_CFG_P1_TRANSITION PHY_TO_OFF_PM_MASTER(0x36)
50 #define R_CFG_P2_TRANSITION PHY_TO_OFF_PM_MASTER(0x37)
51 #define R_CFG_P3_TRANSITION PHY_TO_OFF_PM_MASTER(0x38)
53 #define LVL_WAKEUP 0x08
55 #define ENABLE_WARMRESET (1<<4)
57 #define END_OF_SCRIPT 0x3f
59 #define R_SEQ_ADD_A2S PHY_TO_OFF_PM_MASTER(0x55)
60 #define R_SEQ_ADD_S2A12 PHY_TO_OFF_PM_MASTER(0x56)
61 #define R_SEQ_ADD_S2A3 PHY_TO_OFF_PM_MASTER(0x57)
62 #define R_SEQ_ADD_WARM PHY_TO_OFF_PM_MASTER(0x58)
63 #define R_MEMORY_ADDRESS PHY_TO_OFF_PM_MASTER(0x59)
64 #define R_MEMORY_DATA PHY_TO_OFF_PM_MASTER(0x5a)
66 #define R_PROTECT_KEY 0x0E
70 /* resource configuration registers */
72 #define DEVGROUP_OFFSET 0
76 #define DEVGROUP_SHIFT 5
77 #define DEVGROUP_MASK (7 << DEVGROUP_SHIFT)
79 #define TYPE_MASK (7 << TYPE_SHIFT)
81 #define TYPE2_MASK (3 << TYPE2_SHIFT)
83 static u8 res_config_addrs[] = {
94 [RES_VINTANA1] = 0x3f,
95 [RES_VINTANA2] = 0x43,
100 [RES_VUSB_1V5] = 0x71,
101 [RES_VUSB_1V8] = 0x74,
102 [RES_VUSB_3V1] = 0x77,
105 [RES_NRES_PWRON] = 0x82,
108 [RES_HFCLKOUT] = 0x8b,
109 [RES_32KCLKOUT] = 0x8e,
111 [RES_Main_Ref] = 0x94,
114 static int __init twl4030_write_script_byte(u8 address, u8 byte)
118 err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, address,
122 err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, byte,
128 static int __init twl4030_write_script_ins(u8 address, u16 pmb_message,
134 err = twl4030_write_script_byte(address++, pmb_message >> 8);
137 err = twl4030_write_script_byte(address++, pmb_message & 0xff);
140 err = twl4030_write_script_byte(address++, delay);
143 err = twl4030_write_script_byte(address++, next);
148 static int __init twl4030_write_script(u8 address, struct twl4030_ins *script,
153 for (; len; len--, address++, script++) {
155 err = twl4030_write_script_ins(address,
162 err = twl4030_write_script_ins(address,
173 static int __init twl4030_config_wakeup3_sequence(u8 address)
178 /* Set SLEEP to ACTIVE SEQ address for P3 */
179 err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, address,
184 /* P3 LVL_WAKEUP should be on LEVEL */
185 err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &data,
190 err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, data,
194 pr_err("TWL4030 wakeup sequence for P3 config error\n");
198 static int __init twl4030_config_wakeup12_sequence(u8 address)
203 /* Set SLEEP to ACTIVE SEQ address for P1 and P2 */
204 err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, address,
209 /* P1/P2 LVL_WAKEUP should be on LEVEL */
210 err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &data,
216 err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, data,
221 err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &data,
227 err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, data,
232 if (machine_is_omap_3430sdp() || machine_is_omap_ldp()) {
233 /* Disabling AC charger effect on sleep-active transitions */
234 err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &data,
235 R_CFG_P1_TRANSITION);
239 err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, data ,
240 R_CFG_P1_TRANSITION);
247 pr_err("TWL4030 wakeup sequence for P1 and P2" \
252 static int __init twl4030_config_sleep_sequence(u8 address)
256 /* Set ACTIVE to SLEEP SEQ address in T2 memory*/
257 err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, address,
261 pr_err("TWL4030 sleep sequence config error\n");
266 static int __init twl4030_config_warmreset_sequence(u8 address)
271 /* Set WARM RESET SEQ address for P1 */
272 err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, address,
277 /* P1/P2/P3 enable WARMRESET */
278 err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &rd_data,
283 rd_data |= ENABLE_WARMRESET;
284 err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, rd_data,
289 err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &rd_data,
294 rd_data |= ENABLE_WARMRESET;
295 err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, rd_data,
300 err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &rd_data,
305 rd_data |= ENABLE_WARMRESET;
306 err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, rd_data,
310 pr_err("TWL4030 warmreset seq config error\n");
314 static int __init twl4030_configure_resource(struct twl4030_resconfig *rconfig)
321 if (rconfig->resource > TOTAL_RESOURCES) {
322 pr_err("TWL4030 Resource %d does not exist\n",
327 rconfig_addr = res_config_addrs[rconfig->resource];
329 /* Set resource group */
330 err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_RECEIVER, &grp,
331 rconfig_addr + DEVGROUP_OFFSET);
333 pr_err("TWL4030 Resource %d group could not be read\n",
338 if (rconfig->devgroup >= 0) {
339 grp &= ~DEVGROUP_MASK;
340 grp |= rconfig->devgroup << DEVGROUP_SHIFT;
341 err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
342 grp, rconfig_addr + DEVGROUP_OFFSET);
344 pr_err("TWL4030 failed to program devgroup\n");
349 /* Set resource types */
350 err = twl4030_i2c_read_u8(TWL4030_MODULE_PM_RECEIVER, &type,
351 rconfig_addr + TYPE_OFFSET);
353 pr_err("TWL4030 Resource %d type could not be read\n",
358 if (rconfig->type >= 0) {
360 type |= rconfig->type << TYPE_SHIFT;
363 if (rconfig->type2 >= 0) {
365 type |= rconfig->type2 << TYPE2_SHIFT;
368 err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
369 type, rconfig_addr + TYPE_OFFSET);
371 pr_err("TWL4030 failed to program resource type\n");
378 static int __init load_twl4030_script(struct twl4030_script *tscript,
384 /* Make sure the script isn't going beyond last valid address (0x3f) */
385 if ((address + tscript->size) > END_OF_SCRIPT) {
386 pr_err("TWL4030 scripts too big error\n");
390 err = twl4030_write_script(address, tscript->script, tscript->size);
394 if (tscript->flags & TWL4030_WRST_SCRIPT) {
395 err = twl4030_config_warmreset_sequence(address);
399 if (tscript->flags & TWL4030_WAKEUP12_SCRIPT) {
400 err = twl4030_config_wakeup12_sequence(address);
405 if (tscript->flags & TWL4030_WAKEUP3_SCRIPT) {
406 err = twl4030_config_wakeup3_sequence(address);
410 if (tscript->flags & TWL4030_SLEEP_SCRIPT)
412 pr_warning("TWL4030: Bad order of scripts (sleep "\
413 "script before wakeup) Leads to boot"\
414 "failure on some boards\n");
415 err = twl4030_config_sleep_sequence(address);
420 void __init twl4030_power_init(struct twl4030_power_data *twl4030_scripts)
424 struct twl4030_resconfig *resconfig;
425 u8 address = twl4030_start_script_address;
427 err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, R_KEY_1,
432 err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, R_KEY_2,
437 for (i = 0; i < twl4030_scripts->num; i++) {
438 err = load_twl4030_script(twl4030_scripts->scripts[i], address);
441 address += twl4030_scripts->scripts[i]->size;
444 resconfig = twl4030_scripts->resource_config;
446 while (resconfig->resource) {
447 err = twl4030_configure_resource(resconfig);
455 err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0, R_PROTECT_KEY);
457 pr_err("TWL4030 Unable to relock registers\n");
462 pr_err("TWL4030 Unable to unlock registers\n");
466 pr_err("TWL4030 failed to load scripts\n");
470 pr_err("TWL4030 failed to configure resource\n");