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Diffstat (limited to 'drivers/mfd/twl4030-power.c')
-rw-r--r--drivers/mfd/twl4030-power.c976
1 files changed, 976 insertions, 0 deletions
diff --git a/drivers/mfd/twl4030-power.c b/drivers/mfd/twl4030-power.c
new file mode 100644
index 000000000..6b3693226
--- /dev/null
+++ b/drivers/mfd/twl4030-power.c
@@ -0,0 +1,976 @@
+/*
+ *
+ * Handle TWL4030 Power initialization
+ *
+ * Copyright (C) 2008 Nokia Corporation
+ * Copyright (C) 2006 Texas Instruments, Inc
+ *
+ * Written by Kalle Jokiniemi
+ * Peter De Schrijver <peter.de-schrijver@nokia.com>
+ * Several fixes by Amit Kucheria <amit.kucheria@verdurent.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file "COPYING" in the main directory of this
+ * archive for more details.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/module.h>
+#include <linux/pm.h>
+#include <linux/mfd/twl.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+
+#include <asm/mach-types.h>
+
+static u8 twl4030_start_script_address = 0x2b;
+
+/* Register bits for P1, P2 and P3_SW_EVENTS */
+#define PWR_STOPON_PRWON BIT(6)
+#define PWR_STOPON_SYSEN BIT(5)
+#define PWR_ENABLE_WARMRESET BIT(4)
+#define PWR_LVL_WAKEUP BIT(3)
+#define PWR_DEVACT BIT(2)
+#define PWR_DEVSLP BIT(1)
+#define PWR_DEVOFF BIT(0)
+
+/* Register bits for CFG_P1_TRANSITION (also for P2 and P3) */
+#define STARTON_SWBUG BIT(7) /* Start on watchdog */
+#define STARTON_VBUS BIT(5) /* Start on VBUS */
+#define STARTON_VBAT BIT(4) /* Start on battery insert */
+#define STARTON_RTC BIT(3) /* Start on RTC */
+#define STARTON_USB BIT(2) /* Start on USB host */
+#define STARTON_CHG BIT(1) /* Start on charger */
+#define STARTON_PWON BIT(0) /* Start on PWRON button */
+
+#define SEQ_OFFSYNC (1 << 0)
+
+#define PHY_TO_OFF_PM_MASTER(p) (p - 0x36)
+#define PHY_TO_OFF_PM_RECEIVER(p) (p - 0x5b)
+
+/* resource - hfclk */
+#define R_HFCLKOUT_DEV_GRP PHY_TO_OFF_PM_RECEIVER(0xe6)
+
+/* PM events */
+#define R_P1_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x46)
+#define R_P2_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x47)
+#define R_P3_SW_EVENTS PHY_TO_OFF_PM_MASTER(0x48)
+#define R_CFG_P1_TRANSITION PHY_TO_OFF_PM_MASTER(0x36)
+#define R_CFG_P2_TRANSITION PHY_TO_OFF_PM_MASTER(0x37)
+#define R_CFG_P3_TRANSITION PHY_TO_OFF_PM_MASTER(0x38)
+
+#define END_OF_SCRIPT 0x3f
+
+#define R_SEQ_ADD_A2S PHY_TO_OFF_PM_MASTER(0x55)
+#define R_SEQ_ADD_S2A12 PHY_TO_OFF_PM_MASTER(0x56)
+#define R_SEQ_ADD_S2A3 PHY_TO_OFF_PM_MASTER(0x57)
+#define R_SEQ_ADD_WARM PHY_TO_OFF_PM_MASTER(0x58)
+#define R_MEMORY_ADDRESS PHY_TO_OFF_PM_MASTER(0x59)
+#define R_MEMORY_DATA PHY_TO_OFF_PM_MASTER(0x5a)
+
+/* resource configuration registers
+ <RESOURCE>_DEV_GRP at address 'n+0'
+ <RESOURCE>_TYPE at address 'n+1'
+ <RESOURCE>_REMAP at address 'n+2'
+ <RESOURCE>_DEDICATED at address 'n+3'
+*/
+#define DEV_GRP_OFFSET 0
+#define TYPE_OFFSET 1
+#define REMAP_OFFSET 2
+#define DEDICATED_OFFSET 3
+
+/* Bit positions in the registers */
+
+/* <RESOURCE>_DEV_GRP */
+#define DEV_GRP_SHIFT 5
+#define DEV_GRP_MASK (7 << DEV_GRP_SHIFT)
+
+/* <RESOURCE>_TYPE */
+#define TYPE_SHIFT 0
+#define TYPE_MASK (7 << TYPE_SHIFT)
+#define TYPE2_SHIFT 3
+#define TYPE2_MASK (3 << TYPE2_SHIFT)
+
+/* <RESOURCE>_REMAP */
+#define SLEEP_STATE_SHIFT 0
+#define SLEEP_STATE_MASK (0xf << SLEEP_STATE_SHIFT)
+#define OFF_STATE_SHIFT 4
+#define OFF_STATE_MASK (0xf << OFF_STATE_SHIFT)
+
+static u8 res_config_addrs[] = {
+ [RES_VAUX1] = 0x17,
+ [RES_VAUX2] = 0x1b,
+ [RES_VAUX3] = 0x1f,
+ [RES_VAUX4] = 0x23,
+ [RES_VMMC1] = 0x27,
+ [RES_VMMC2] = 0x2b,
+ [RES_VPLL1] = 0x2f,
+ [RES_VPLL2] = 0x33,
+ [RES_VSIM] = 0x37,
+ [RES_VDAC] = 0x3b,
+ [RES_VINTANA1] = 0x3f,
+ [RES_VINTANA2] = 0x43,
+ [RES_VINTDIG] = 0x47,
+ [RES_VIO] = 0x4b,
+ [RES_VDD1] = 0x55,
+ [RES_VDD2] = 0x63,
+ [RES_VUSB_1V5] = 0x71,
+ [RES_VUSB_1V8] = 0x74,
+ [RES_VUSB_3V1] = 0x77,
+ [RES_VUSBCP] = 0x7a,
+ [RES_REGEN] = 0x7f,
+ [RES_NRES_PWRON] = 0x82,
+ [RES_CLKEN] = 0x85,
+ [RES_SYSEN] = 0x88,
+ [RES_HFCLKOUT] = 0x8b,
+ [RES_32KCLKOUT] = 0x8e,
+ [RES_RESET] = 0x91,
+ [RES_MAIN_REF] = 0x94,
+};
+
+/*
+ * Usable values for .remap_sleep and .remap_off
+ * Based on table "5.3.3 Resource Operating modes"
+ */
+enum {
+ TWL_REMAP_OFF = 0,
+ TWL_REMAP_SLEEP = 8,
+ TWL_REMAP_ACTIVE = 9,
+};
+
+/*
+ * Macros to configure the PM register states for various resources.
+ * Note that we can make MSG_SINGULAR etc private to this driver once
+ * omap3 has been made DT only.
+ */
+#define TWL_DFLT_DELAY 2 /* typically 2 32 KiHz cycles */
+#define TWL_DEV_GRP_P123 (DEV_GRP_P1 | DEV_GRP_P2 | DEV_GRP_P3)
+#define TWL_RESOURCE_SET(res, state) \
+ { MSG_SINGULAR(DEV_GRP_NULL, (res), (state)), TWL_DFLT_DELAY }
+#define TWL_RESOURCE_ON(res) TWL_RESOURCE_SET(res, RES_STATE_ACTIVE)
+#define TWL_RESOURCE_OFF(res) TWL_RESOURCE_SET(res, RES_STATE_OFF)
+#define TWL_RESOURCE_RESET(res) TWL_RESOURCE_SET(res, RES_STATE_WRST)
+/*
+ * It seems that type1 and type2 is just the resource init order
+ * number for the type1 and type2 group.
+ */
+#define TWL_RESOURCE_SET_ACTIVE(res, state) \
+ { MSG_SINGULAR(DEV_GRP_NULL, (res), RES_STATE_ACTIVE), (state) }
+#define TWL_RESOURCE_GROUP_RESET(group, type1, type2) \
+ { MSG_BROADCAST(DEV_GRP_NULL, (group), (type1), (type2), \
+ RES_STATE_WRST), TWL_DFLT_DELAY }
+#define TWL_RESOURCE_GROUP_SLEEP(group, type, type2) \
+ { MSG_BROADCAST(DEV_GRP_NULL, (group), (type), (type2), \
+ RES_STATE_SLEEP), TWL_DFLT_DELAY }
+#define TWL_RESOURCE_GROUP_ACTIVE(group, type, type2) \
+ { MSG_BROADCAST(DEV_GRP_NULL, (group), (type), (type2), \
+ RES_STATE_ACTIVE), TWL_DFLT_DELAY }
+#define TWL_REMAP_SLEEP(res, devgrp, typ, typ2) \
+ { .resource = (res), .devgroup = (devgrp), \
+ .type = (typ), .type2 = (typ2), \
+ .remap_off = TWL_REMAP_OFF, \
+ .remap_sleep = TWL_REMAP_SLEEP, }
+#define TWL_REMAP_OFF(res, devgrp, typ, typ2) \
+ { .resource = (res), .devgroup = (devgrp), \
+ .type = (typ), .type2 = (typ2), \
+ .remap_off = TWL_REMAP_OFF, .remap_sleep = TWL_REMAP_OFF, }
+
+static int twl4030_write_script_byte(u8 address, u8 byte)
+{
+ int err;
+
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_MEMORY_ADDRESS);
+ if (err)
+ goto out;
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, byte, R_MEMORY_DATA);
+out:
+ return err;
+}
+
+static int twl4030_write_script_ins(u8 address, u16 pmb_message,
+ u8 delay, u8 next)
+{
+ int err;
+
+ address *= 4;
+ err = twl4030_write_script_byte(address++, pmb_message >> 8);
+ if (err)
+ goto out;
+ err = twl4030_write_script_byte(address++, pmb_message & 0xff);
+ if (err)
+ goto out;
+ err = twl4030_write_script_byte(address++, delay);
+ if (err)
+ goto out;
+ err = twl4030_write_script_byte(address++, next);
+out:
+ return err;
+}
+
+static int twl4030_write_script(u8 address, struct twl4030_ins *script,
+ int len)
+{
+ int err = -EINVAL;
+
+ for (; len; len--, address++, script++) {
+ if (len == 1) {
+ err = twl4030_write_script_ins(address,
+ script->pmb_message,
+ script->delay,
+ END_OF_SCRIPT);
+ if (err)
+ break;
+ } else {
+ err = twl4030_write_script_ins(address,
+ script->pmb_message,
+ script->delay,
+ address + 1);
+ if (err)
+ break;
+ }
+ }
+ return err;
+}
+
+static int twl4030_config_wakeup3_sequence(u8 address)
+{
+ int err;
+ u8 data;
+
+ /* Set SLEEP to ACTIVE SEQ address for P3 */
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_S2A3);
+ if (err)
+ goto out;
+
+ /* P3 LVL_WAKEUP should be on LEVEL */
+ err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data, R_P3_SW_EVENTS);
+ if (err)
+ goto out;
+ data |= PWR_LVL_WAKEUP;
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, data, R_P3_SW_EVENTS);
+out:
+ if (err)
+ pr_err("TWL4030 wakeup sequence for P3 config error\n");
+ return err;
+}
+
+static int
+twl4030_config_wakeup12_sequence(const struct twl4030_power_data *pdata,
+ u8 address)
+{
+ int err = 0;
+ u8 data;
+
+ /* Set SLEEP to ACTIVE SEQ address for P1 and P2 */
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_S2A12);
+ if (err)
+ goto out;
+
+ /* P1/P2 LVL_WAKEUP should be on LEVEL */
+ err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data, R_P1_SW_EVENTS);
+ if (err)
+ goto out;
+
+ data |= PWR_LVL_WAKEUP;
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, data, R_P1_SW_EVENTS);
+ if (err)
+ goto out;
+
+ err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data, R_P2_SW_EVENTS);
+ if (err)
+ goto out;
+
+ data |= PWR_LVL_WAKEUP;
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, data, R_P2_SW_EVENTS);
+ if (err)
+ goto out;
+
+ if (pdata->ac_charger_quirk || machine_is_omap_3430sdp() ||
+ machine_is_omap_ldp()) {
+ /* Disabling AC charger effect on sleep-active transitions */
+ err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &data,
+ R_CFG_P1_TRANSITION);
+ if (err)
+ goto out;
+ data &= ~STARTON_CHG;
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, data,
+ R_CFG_P1_TRANSITION);
+ if (err)
+ goto out;
+ }
+
+out:
+ if (err)
+ pr_err("TWL4030 wakeup sequence for P1 and P2" \
+ "config error\n");
+ return err;
+}
+
+static int twl4030_config_sleep_sequence(u8 address)
+{
+ int err;
+
+ /* Set ACTIVE to SLEEP SEQ address in T2 memory*/
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_A2S);
+
+ if (err)
+ pr_err("TWL4030 sleep sequence config error\n");
+
+ return err;
+}
+
+static int twl4030_config_warmreset_sequence(u8 address)
+{
+ int err;
+ u8 rd_data;
+
+ /* Set WARM RESET SEQ address for P1 */
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, address, R_SEQ_ADD_WARM);
+ if (err)
+ goto out;
+
+ /* P1/P2/P3 enable WARMRESET */
+ err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &rd_data, R_P1_SW_EVENTS);
+ if (err)
+ goto out;
+
+ rd_data |= PWR_ENABLE_WARMRESET;
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, rd_data, R_P1_SW_EVENTS);
+ if (err)
+ goto out;
+
+ err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &rd_data, R_P2_SW_EVENTS);
+ if (err)
+ goto out;
+
+ rd_data |= PWR_ENABLE_WARMRESET;
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, rd_data, R_P2_SW_EVENTS);
+ if (err)
+ goto out;
+
+ err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &rd_data, R_P3_SW_EVENTS);
+ if (err)
+ goto out;
+
+ rd_data |= PWR_ENABLE_WARMRESET;
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, rd_data, R_P3_SW_EVENTS);
+out:
+ if (err)
+ pr_err("TWL4030 warmreset seq config error\n");
+ return err;
+}
+
+static int twl4030_configure_resource(struct twl4030_resconfig *rconfig)
+{
+ int rconfig_addr;
+ int err;
+ u8 type;
+ u8 grp;
+ u8 remap;
+
+ if (rconfig->resource > TOTAL_RESOURCES) {
+ pr_err("TWL4030 Resource %d does not exist\n",
+ rconfig->resource);
+ return -EINVAL;
+ }
+
+ rconfig_addr = res_config_addrs[rconfig->resource];
+
+ /* Set resource group */
+ err = twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &grp,
+ rconfig_addr + DEV_GRP_OFFSET);
+ if (err) {
+ pr_err("TWL4030 Resource %d group could not be read\n",
+ rconfig->resource);
+ return err;
+ }
+
+ if (rconfig->devgroup != TWL4030_RESCONFIG_UNDEF) {
+ grp &= ~DEV_GRP_MASK;
+ grp |= rconfig->devgroup << DEV_GRP_SHIFT;
+ err = twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER,
+ grp, rconfig_addr + DEV_GRP_OFFSET);
+ if (err < 0) {
+ pr_err("TWL4030 failed to program devgroup\n");
+ return err;
+ }
+ }
+
+ /* Set resource types */
+ err = twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &type,
+ rconfig_addr + TYPE_OFFSET);
+ if (err < 0) {
+ pr_err("TWL4030 Resource %d type could not be read\n",
+ rconfig->resource);
+ return err;
+ }
+
+ if (rconfig->type != TWL4030_RESCONFIG_UNDEF) {
+ type &= ~TYPE_MASK;
+ type |= rconfig->type << TYPE_SHIFT;
+ }
+
+ if (rconfig->type2 != TWL4030_RESCONFIG_UNDEF) {
+ type &= ~TYPE2_MASK;
+ type |= rconfig->type2 << TYPE2_SHIFT;
+ }
+
+ err = twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER,
+ type, rconfig_addr + TYPE_OFFSET);
+ if (err < 0) {
+ pr_err("TWL4030 failed to program resource type\n");
+ return err;
+ }
+
+ /* Set remap states */
+ err = twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &remap,
+ rconfig_addr + REMAP_OFFSET);
+ if (err < 0) {
+ pr_err("TWL4030 Resource %d remap could not be read\n",
+ rconfig->resource);
+ return err;
+ }
+
+ if (rconfig->remap_off != TWL4030_RESCONFIG_UNDEF) {
+ remap &= ~OFF_STATE_MASK;
+ remap |= rconfig->remap_off << OFF_STATE_SHIFT;
+ }
+
+ if (rconfig->remap_sleep != TWL4030_RESCONFIG_UNDEF) {
+ remap &= ~SLEEP_STATE_MASK;
+ remap |= rconfig->remap_sleep << SLEEP_STATE_SHIFT;
+ }
+
+ err = twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER,
+ remap,
+ rconfig_addr + REMAP_OFFSET);
+ if (err < 0) {
+ pr_err("TWL4030 failed to program remap\n");
+ return err;
+ }
+
+ return 0;
+}
+
+static int load_twl4030_script(const struct twl4030_power_data *pdata,
+ struct twl4030_script *tscript,
+ u8 address)
+{
+ int err;
+ static int order;
+
+ /* Make sure the script isn't going beyond last valid address (0x3f) */
+ if ((address + tscript->size) > END_OF_SCRIPT) {
+ pr_err("TWL4030 scripts too big error\n");
+ return -EINVAL;
+ }
+
+ err = twl4030_write_script(address, tscript->script, tscript->size);
+ if (err)
+ goto out;
+
+ if (tscript->flags & TWL4030_WRST_SCRIPT) {
+ err = twl4030_config_warmreset_sequence(address);
+ if (err)
+ goto out;
+ }
+ if (tscript->flags & TWL4030_WAKEUP12_SCRIPT) {
+ /* Reset any existing sleep script to avoid hangs on reboot */
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT,
+ R_SEQ_ADD_A2S);
+ if (err)
+ goto out;
+
+ err = twl4030_config_wakeup12_sequence(pdata, address);
+ if (err)
+ goto out;
+ order = 1;
+ }
+ if (tscript->flags & TWL4030_WAKEUP3_SCRIPT) {
+ err = twl4030_config_wakeup3_sequence(address);
+ if (err)
+ goto out;
+ }
+ if (tscript->flags & TWL4030_SLEEP_SCRIPT) {
+ if (!order)
+ pr_warn("TWL4030: Bad order of scripts (sleep script before wakeup) Leads to boot failure on some boards\n");
+ err = twl4030_config_sleep_sequence(address);
+ }
+out:
+ return err;
+}
+
+int twl4030_remove_script(u8 flags)
+{
+ int err = 0;
+
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1,
+ TWL4030_PM_MASTER_PROTECT_KEY);
+ if (err) {
+ pr_err("twl4030: unable to unlock PROTECT_KEY\n");
+ return err;
+ }
+
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG2,
+ TWL4030_PM_MASTER_PROTECT_KEY);
+ if (err) {
+ pr_err("twl4030: unable to unlock PROTECT_KEY\n");
+ return err;
+ }
+
+ if (flags & TWL4030_WRST_SCRIPT) {
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT,
+ R_SEQ_ADD_WARM);
+ if (err)
+ return err;
+ }
+ if (flags & TWL4030_WAKEUP12_SCRIPT) {
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT,
+ R_SEQ_ADD_S2A12);
+ if (err)
+ return err;
+ }
+ if (flags & TWL4030_WAKEUP3_SCRIPT) {
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT,
+ R_SEQ_ADD_S2A3);
+ if (err)
+ return err;
+ }
+ if (flags & TWL4030_SLEEP_SCRIPT) {
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, END_OF_SCRIPT,
+ R_SEQ_ADD_A2S);
+ if (err)
+ return err;
+ }
+
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0,
+ TWL4030_PM_MASTER_PROTECT_KEY);
+ if (err)
+ pr_err("TWL4030 Unable to relock registers\n");
+
+ return err;
+}
+
+static int
+twl4030_power_configure_scripts(const struct twl4030_power_data *pdata)
+{
+ int err;
+ int i;
+ u8 address = twl4030_start_script_address;
+
+ for (i = 0; i < pdata->num; i++) {
+ err = load_twl4030_script(pdata, pdata->scripts[i], address);
+ if (err)
+ return err;
+ address += pdata->scripts[i]->size;
+ }
+
+ return 0;
+}
+
+static void twl4030_patch_rconfig(struct twl4030_resconfig *common,
+ struct twl4030_resconfig *board)
+{
+ while (common->resource) {
+ struct twl4030_resconfig *b = board;
+
+ while (b->resource) {
+ if (b->resource == common->resource) {
+ *common = *b;
+ break;
+ }
+ b++;
+ }
+ common++;
+ }
+}
+
+static int
+twl4030_power_configure_resources(const struct twl4030_power_data *pdata)
+{
+ struct twl4030_resconfig *resconfig = pdata->resource_config;
+ struct twl4030_resconfig *boardconf = pdata->board_config;
+ int err;
+
+ if (resconfig) {
+ if (boardconf)
+ twl4030_patch_rconfig(resconfig, boardconf);
+
+ while (resconfig->resource) {
+ err = twl4030_configure_resource(resconfig);
+ if (err)
+ return err;
+ resconfig++;
+ }
+ }
+
+ return 0;
+}
+
+static int twl4030_starton_mask_and_set(u8 bitmask, u8 bitvalues)
+{
+ u8 regs[3] = { TWL4030_PM_MASTER_CFG_P1_TRANSITION,
+ TWL4030_PM_MASTER_CFG_P2_TRANSITION,
+ TWL4030_PM_MASTER_CFG_P3_TRANSITION, };
+ u8 val;
+ int i, err;
+
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1,
+ TWL4030_PM_MASTER_PROTECT_KEY);
+ if (err)
+ goto relock;
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
+ TWL4030_PM_MASTER_KEY_CFG2,
+ TWL4030_PM_MASTER_PROTECT_KEY);
+ if (err)
+ goto relock;
+
+ for (i = 0; i < sizeof(regs); i++) {
+ err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER,
+ &val, regs[i]);
+ if (err)
+ break;
+ val = (~bitmask & val) | (bitmask & bitvalues);
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
+ val, regs[i]);
+ if (err)
+ break;
+ }
+
+ if (err)
+ pr_err("TWL4030 Register access failed: %i\n", err);
+
+relock:
+ return twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0,
+ TWL4030_PM_MASTER_PROTECT_KEY);
+}
+
+/*
+ * In master mode, start the power off sequence.
+ * After a successful execution, TWL shuts down the power to the SoC
+ * and all peripherals connected to it.
+ */
+void twl4030_power_off(void)
+{
+ int err;
+
+ /* Disable start on charger or VBUS as it can break poweroff */
+ err = twl4030_starton_mask_and_set(STARTON_VBUS | STARTON_CHG, 0);
+ if (err)
+ pr_err("TWL4030 Unable to configure start-up\n");
+
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, PWR_DEVOFF,
+ TWL4030_PM_MASTER_P1_SW_EVENTS);
+ if (err)
+ pr_err("TWL4030 Unable to power off\n");
+}
+
+static bool twl4030_power_use_poweroff(const struct twl4030_power_data *pdata,
+ struct device_node *node)
+{
+ if (pdata && pdata->use_poweroff)
+ return true;
+
+ if (of_property_read_bool(node, "ti,system-power-controller"))
+ return true;
+
+ if (of_property_read_bool(node, "ti,use_poweroff"))
+ return true;
+
+ return false;
+}
+
+#ifdef CONFIG_OF
+
+/* Generic warm reset configuration for omap3 */
+
+static struct twl4030_ins omap3_wrst_seq[] = {
+ TWL_RESOURCE_OFF(RES_NRES_PWRON),
+ TWL_RESOURCE_OFF(RES_RESET),
+ TWL_RESOURCE_RESET(RES_MAIN_REF),
+ TWL_RESOURCE_GROUP_RESET(RES_GRP_ALL, RES_TYPE_R0, RES_TYPE2_R2),
+ TWL_RESOURCE_RESET(RES_VUSB_3V1),
+ TWL_RESOURCE_RESET(RES_VMMC1),
+ TWL_RESOURCE_GROUP_RESET(RES_GRP_ALL, RES_TYPE_R0, RES_TYPE2_R1),
+ TWL_RESOURCE_GROUP_RESET(RES_GRP_RC, RES_TYPE_ALL, RES_TYPE2_R0),
+ TWL_RESOURCE_ON(RES_RESET),
+ TWL_RESOURCE_ON(RES_NRES_PWRON),
+};
+
+static struct twl4030_script omap3_wrst_script = {
+ .script = omap3_wrst_seq,
+ .size = ARRAY_SIZE(omap3_wrst_seq),
+ .flags = TWL4030_WRST_SCRIPT,
+};
+
+static struct twl4030_script *omap3_reset_scripts[] = {
+ &omap3_wrst_script,
+};
+
+static struct twl4030_resconfig omap3_rconfig[] = {
+ TWL_REMAP_SLEEP(RES_HFCLKOUT, DEV_GRP_P3, -1, -1),
+ TWL_REMAP_SLEEP(RES_VDD1, DEV_GRP_P1, -1, -1),
+ TWL_REMAP_SLEEP(RES_VDD2, DEV_GRP_P1, -1, -1),
+ { 0, 0 },
+};
+
+static struct twl4030_power_data omap3_reset = {
+ .scripts = omap3_reset_scripts,
+ .num = ARRAY_SIZE(omap3_reset_scripts),
+ .resource_config = omap3_rconfig,
+};
+
+/* Recommended generic default idle configuration for off-idle */
+
+/* Broadcast message to put res to sleep */
+static struct twl4030_ins omap3_idle_sleep_on_seq[] = {
+ TWL_RESOURCE_GROUP_SLEEP(RES_GRP_ALL, RES_TYPE_ALL, 0),
+};
+
+static struct twl4030_script omap3_idle_sleep_on_script = {
+ .script = omap3_idle_sleep_on_seq,
+ .size = ARRAY_SIZE(omap3_idle_sleep_on_seq),
+ .flags = TWL4030_SLEEP_SCRIPT,
+};
+
+/* Broadcast message to put res to active */
+static struct twl4030_ins omap3_idle_wakeup_p12_seq[] = {
+ TWL_RESOURCE_GROUP_ACTIVE(RES_GRP_ALL, RES_TYPE_ALL, 0),
+};
+
+static struct twl4030_script omap3_idle_wakeup_p12_script = {
+ .script = omap3_idle_wakeup_p12_seq,
+ .size = ARRAY_SIZE(omap3_idle_wakeup_p12_seq),
+ .flags = TWL4030_WAKEUP12_SCRIPT,
+};
+
+/* Broadcast message to put res to active */
+static struct twl4030_ins omap3_idle_wakeup_p3_seq[] = {
+ TWL_RESOURCE_SET_ACTIVE(RES_CLKEN, 0x37),
+ TWL_RESOURCE_GROUP_ACTIVE(RES_GRP_ALL, RES_TYPE_ALL, 0),
+};
+
+static struct twl4030_script omap3_idle_wakeup_p3_script = {
+ .script = omap3_idle_wakeup_p3_seq,
+ .size = ARRAY_SIZE(omap3_idle_wakeup_p3_seq),
+ .flags = TWL4030_WAKEUP3_SCRIPT,
+};
+
+static struct twl4030_script *omap3_idle_scripts[] = {
+ &omap3_idle_wakeup_p12_script,
+ &omap3_idle_wakeup_p3_script,
+ &omap3_wrst_script,
+ &omap3_idle_sleep_on_script,
+};
+
+/*
+ * Recommended configuration based on "Recommended Sleep
+ * Sequences for the Zoom Platform":
+ * http://omappedia.com/wiki/File:Recommended_Sleep_Sequences_Zoom.pdf
+ * Note that the type1 and type2 seem to be just the init order number
+ * for type1 and type2 groups as specified in the document mentioned
+ * above.
+ */
+static struct twl4030_resconfig omap3_idle_rconfig[] = {
+ TWL_REMAP_SLEEP(RES_VAUX1, TWL4030_RESCONFIG_UNDEF, 0, 0),
+ TWL_REMAP_SLEEP(RES_VAUX2, TWL4030_RESCONFIG_UNDEF, 0, 0),
+ TWL_REMAP_SLEEP(RES_VAUX3, TWL4030_RESCONFIG_UNDEF, 0, 0),
+ TWL_REMAP_SLEEP(RES_VAUX4, TWL4030_RESCONFIG_UNDEF, 0, 0),
+ TWL_REMAP_SLEEP(RES_VMMC1, TWL4030_RESCONFIG_UNDEF, 0, 0),
+ TWL_REMAP_SLEEP(RES_VMMC2, TWL4030_RESCONFIG_UNDEF, 0, 0),
+ TWL_REMAP_OFF(RES_VPLL1, DEV_GRP_P1, 3, 1),
+ TWL_REMAP_SLEEP(RES_VPLL2, DEV_GRP_P1, 0, 0),
+ TWL_REMAP_SLEEP(RES_VSIM, TWL4030_RESCONFIG_UNDEF, 0, 0),
+ TWL_REMAP_SLEEP(RES_VDAC, TWL4030_RESCONFIG_UNDEF, 0, 0),
+ TWL_REMAP_SLEEP(RES_VINTANA1, TWL_DEV_GRP_P123, 1, 2),
+ TWL_REMAP_SLEEP(RES_VINTANA2, TWL_DEV_GRP_P123, 0, 2),
+ TWL_REMAP_SLEEP(RES_VINTDIG, TWL_DEV_GRP_P123, 1, 2),
+ TWL_REMAP_SLEEP(RES_VIO, TWL_DEV_GRP_P123, 2, 2),
+ TWL_REMAP_OFF(RES_VDD1, DEV_GRP_P1, 4, 1),
+ TWL_REMAP_OFF(RES_VDD2, DEV_GRP_P1, 3, 1),
+ TWL_REMAP_SLEEP(RES_VUSB_1V5, TWL4030_RESCONFIG_UNDEF, 0, 0),
+ TWL_REMAP_SLEEP(RES_VUSB_1V8, TWL4030_RESCONFIG_UNDEF, 0, 0),
+ TWL_REMAP_SLEEP(RES_VUSB_3V1, TWL_DEV_GRP_P123, 0, 0),
+ /* Resource #20 USB charge pump skipped */
+ TWL_REMAP_SLEEP(RES_REGEN, TWL_DEV_GRP_P123, 2, 1),
+ TWL_REMAP_SLEEP(RES_NRES_PWRON, TWL_DEV_GRP_P123, 0, 1),
+ TWL_REMAP_SLEEP(RES_CLKEN, TWL_DEV_GRP_P123, 3, 2),
+ TWL_REMAP_SLEEP(RES_SYSEN, TWL_DEV_GRP_P123, 6, 1),
+ TWL_REMAP_SLEEP(RES_HFCLKOUT, DEV_GRP_P3, 0, 2),
+ TWL_REMAP_SLEEP(RES_32KCLKOUT, TWL_DEV_GRP_P123, 0, 0),
+ TWL_REMAP_SLEEP(RES_RESET, TWL_DEV_GRP_P123, 6, 0),
+ TWL_REMAP_SLEEP(RES_MAIN_REF, TWL_DEV_GRP_P123, 0, 0),
+ { /* Terminator */ },
+};
+
+static struct twl4030_power_data omap3_idle = {
+ .scripts = omap3_idle_scripts,
+ .num = ARRAY_SIZE(omap3_idle_scripts),
+ .resource_config = omap3_idle_rconfig,
+};
+
+/* Disable 32 KiHz oscillator during idle */
+static struct twl4030_resconfig osc_off_rconfig[] = {
+ TWL_REMAP_OFF(RES_CLKEN, DEV_GRP_P1 | DEV_GRP_P3, 3, 2),
+ { /* Terminator */ },
+};
+
+static struct twl4030_power_data osc_off_idle = {
+ .scripts = omap3_idle_scripts,
+ .num = ARRAY_SIZE(omap3_idle_scripts),
+ .resource_config = omap3_idle_rconfig,
+ .board_config = osc_off_rconfig,
+};
+
+static struct twl4030_power_data omap3_idle_ac_quirk = {
+ .scripts = omap3_idle_scripts,
+ .num = ARRAY_SIZE(omap3_idle_scripts),
+ .resource_config = omap3_idle_rconfig,
+ .ac_charger_quirk = true,
+};
+
+static struct twl4030_power_data omap3_idle_ac_quirk_osc_off = {
+ .scripts = omap3_idle_scripts,
+ .num = ARRAY_SIZE(omap3_idle_scripts),
+ .resource_config = omap3_idle_rconfig,
+ .board_config = osc_off_rconfig,
+ .ac_charger_quirk = true,
+};
+
+static const struct of_device_id twl4030_power_of_match[] = {
+ {
+ .compatible = "ti,twl4030-power",
+ },
+ {
+ .compatible = "ti,twl4030-power-reset",
+ .data = &omap3_reset,
+ },
+ {
+ .compatible = "ti,twl4030-power-idle",
+ .data = &omap3_idle,
+ },
+ {
+ .compatible = "ti,twl4030-power-idle-osc-off",
+ .data = &osc_off_idle,
+ },
+ {
+ .compatible = "ti,twl4030-power-omap3-sdp",
+ .data = &omap3_idle_ac_quirk,
+ },
+ {
+ .compatible = "ti,twl4030-power-omap3-ldp",
+ .data = &omap3_idle_ac_quirk_osc_off,
+ },
+ {
+ .compatible = "ti,twl4030-power-omap3-evm",
+ .data = &omap3_idle_ac_quirk,
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(of, twl4030_power_of_match);
+#endif /* CONFIG_OF */
+
+static int twl4030_power_probe(struct platform_device *pdev)
+{
+ const struct twl4030_power_data *pdata = dev_get_platdata(&pdev->dev);
+ struct device_node *node = pdev->dev.of_node;
+ const struct of_device_id *match;
+ int err = 0;
+ int err2 = 0;
+ u8 val;
+
+ if (!pdata && !node) {
+ dev_err(&pdev->dev, "Platform data is missing\n");
+ return -EINVAL;
+ }
+
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1,
+ TWL4030_PM_MASTER_PROTECT_KEY);
+ err |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER,
+ TWL4030_PM_MASTER_KEY_CFG2,
+ TWL4030_PM_MASTER_PROTECT_KEY);
+
+ if (err) {
+ pr_err("TWL4030 Unable to unlock registers\n");
+ return err;
+ }
+
+ match = of_match_device(of_match_ptr(twl4030_power_of_match),
+ &pdev->dev);
+ if (match && match->data)
+ pdata = match->data;
+
+ if (pdata) {
+ err = twl4030_power_configure_scripts(pdata);
+ if (err) {
+ pr_err("TWL4030 failed to load scripts\n");
+ goto relock;
+ }
+ err = twl4030_power_configure_resources(pdata);
+ if (err) {
+ pr_err("TWL4030 failed to configure resource\n");
+ goto relock;
+ }
+ }
+
+ /* Board has to be wired properly to use this feature */
+ if (twl4030_power_use_poweroff(pdata, node) && !pm_power_off) {
+ /* Default for SEQ_OFFSYNC is set, lets ensure this */
+ err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &val,
+ TWL4030_PM_MASTER_CFG_P123_TRANSITION);
+ if (err) {
+ pr_warn("TWL4030 Unable to read registers\n");
+ } else if (!(val & SEQ_OFFSYNC)) {
+ val |= SEQ_OFFSYNC;
+ err = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, val,
+ TWL4030_PM_MASTER_CFG_P123_TRANSITION);
+ if (err) {
+ pr_err("TWL4030 Unable to setup SEQ_OFFSYNC\n");
+ goto relock;
+ }
+ }
+
+ pm_power_off = twl4030_power_off;
+ }
+
+relock:
+ err2 = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0,
+ TWL4030_PM_MASTER_PROTECT_KEY);
+ if (err2) {
+ pr_err("TWL4030 Unable to relock registers\n");
+ return err2;
+ }
+
+ return err;
+}
+
+static int twl4030_power_remove(struct platform_device *pdev)
+{
+ return 0;
+}
+
+static struct platform_driver twl4030_power_driver = {
+ .driver = {
+ .name = "twl4030_power",
+ .of_match_table = of_match_ptr(twl4030_power_of_match),
+ },
+ .probe = twl4030_power_probe,
+ .remove = twl4030_power_remove,
+};
+
+module_platform_driver(twl4030_power_driver);
+
+MODULE_AUTHOR("Nokia Corporation");
+MODULE_AUTHOR("Texas Instruments, Inc.");
+MODULE_DESCRIPTION("Power management for TWL4030");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:twl4030_power");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-19 01:03:05 +0000