--- /dev/null
+/*
+ * linux/drivers/i2c/chips/twl4030-power.c
+ *
+ * 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>
+ *
+ * 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/i2c/twl4030.h>
+
+#define PWR_P1_SW_EVENTS 0x10
+#define PWR_DEVOFF (1<<0)
+
+#define PHY_TO_OFF_PM_MASTER(p) (p - 0x36)
+#define PHY_TO_OFF_PM_RECIEVER(p) (p - 0x5b)
+
+/* resource - hfclk */
+#define R_HFCLKOUT_DEV_GRP PHY_TO_OFF_PM_RECIEVER(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 LVL_WAKEUP 0x08
+
+#define ENABLE_WARMRESET (1<<4)
+
+/* sequence script */
+
+#define END_OF_SCRIPT 0x3f
+
+#define R_SEQ_ADD_A2S PHY_TO_OFF_PM_MASTER(0x55)
+#define R_SEQ_ADD_SA12 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)
+
+/* Power bus message definitions */
+
+#define DEV_GRP_NULL 0x0
+#define DEV_GRP_P1 0x1
+#define DEV_GRP_P2 0x2
+#define DEV_GRP_P3 0x4
+
+#define RES_GRP_RES 0x0
+#define RES_GRP_PP 0x1
+#define RES_GRP_RC 0x2
+#define RES_GRP_PP_RC 0x3
+#define RES_GRP_PR 0x4
+#define RES_GRP_PP_PR 0x5
+#define RES_GRP_RC_PR 0x6
+#define RES_GRP_ALL 0x7
+
+#define RES_TYPE2_R0 0x0
+
+#define RES_TYPE_ALL 0x7
+
+#define RES_STATE_WRST 0xF
+#define RES_STATE_ACTIVE 0xE
+#define RES_STATE_SLEEP 0x8
+#define RES_STATE_OFF 0x0
+
+/*
+* Power Bus Message Format
+*
+* Broadcast Message (16 Bits)
+* DEV_GRP[15:13] MT[12] RES_GRP[11:9] RES_TYPE2[8:7] RES_TYPE[6:4]
+* RES_STATE[3:0]
+*
+* Singular Message (16 Bits)
+* DEV_GRP[15:13] MT[12] RES_ID[11:4] RES_STATE[3:0]
+*
+*/
+
+#define MSG_BROADCAST(devgrp, grp, type, type2, state) \
+ (devgrp << 13 | 1 << 12 | grp << 9 | type2 << 7 | type << 4 | state)
+
+#define MSG_SINGULAR(devgrp, id, state) \
+ (devgrp << 13 | 0 << 12 | id << 4 | state)
+
+#define R_PROTECT_KEY 0x0E
+#define KEY_1 0xC0
+#define KEY_2 0x0C
+
+struct triton_ins {
+ u16 pmb_message;
+ u8 delay;
+};
+
+
+#define CONFIG_DISABLE_HFCLK 1
+
+#if defined(CONFIG_MACH_OMAP_3430SDP) || defined(CONFIG_MACH_OMAP_3430LABRADOR)
+
+struct triton_ins sleep_on_seq[] __initdata = {
+ {MSG_SINGULAR(DEV_GRP_P1, 0xf, RES_STATE_OFF), 4},
+ {MSG_SINGULAR(DEV_GRP_P1, 0x10, RES_STATE_OFF), 2},
+#ifdef CONFIG_DISABLE_HFCLK
+ {MSG_SINGULAR(DEV_GRP_P1, 0x7, RES_STATE_OFF), 3},
+ {MSG_SINGULAR(DEV_GRP_P1, 0x19, RES_STATE_OFF), 3},
+#endif /* #ifdef CONFIG_DISABLE_HFCLK */
+};
+
+struct triton_ins sleep_off_seq[] __initdata = {
+#ifndef CONFIG_DISABLE_HFCLK
+ {MSG_SINGULAR(DEV_GRP_P1, 0xf, RES_STATE_ACTIVE), 4},
+ {MSG_SINGULAR(DEV_GRP_P1, 0x10, RES_STATE_ACTIVE), 2},
+#else
+ {MSG_SINGULAR(DEV_GRP_P1, 0x7, RES_STATE_ACTIVE), 0x30},
+ {MSG_SINGULAR(DEV_GRP_P1, 0xf, RES_STATE_ACTIVE), 0x30},
+ {MSG_SINGULAR(DEV_GRP_P1, 0x10, RES_STATE_ACTIVE), 0x37},
+ {MSG_SINGULAR(DEV_GRP_P1, 0x19, RES_STATE_ACTIVE), 3},
+#endif /* #ifndef CONFIG_DISABLE_HFCLK */
+};
+
+struct triton_ins t2_wrst_seq[] __initdata = {
+ {MSG_SINGULAR(DEV_GRP_NULL, 0x1b, RES_STATE_OFF), 2},
+ {MSG_SINGULAR(DEV_GRP_P1, 0xf, RES_STATE_WRST), 15},
+ {MSG_SINGULAR(DEV_GRP_P1, 0x10, RES_STATE_WRST), 15},
+ {MSG_SINGULAR(DEV_GRP_P1, 0x7, RES_STATE_WRST), 0x60},
+ {MSG_SINGULAR(DEV_GRP_P1, 0x19, RES_STATE_ACTIVE), 2},
+ {MSG_SINGULAR(DEV_GRP_NULL, 0x1b, RES_STATE_ACTIVE), 2},
+};
+#else
+struct triton_ins sleep_on_seq[] __initdata = {
+ {MSG_BROADCAST(DEV_GRP_NULL, RES_GRP_RC, RES_TYPE_ALL, RES_TYPE2_R0,
+ RES_STATE_SLEEP), 4},
+ {MSG_BROADCAST(DEV_GRP_NULL, RES_GRP_ALL, RES_TYPE_ALL, RES_TYPE_R7,
+ RES_STATE_SLEEP), 4},
+};
+
+struct triton_ins sleep_off_seq[] __initdata = {
+ {MSG_SINGULAR(DEV_GRP_NULL, 0x17, RES_STATE_ACTIVE), 0x30},
+ {MSG_BROADCAST(DEV_GRP_NULL, RES_GRP_PP_PR, RES_TYPE_ALL, RES_TYPE2_R0,
+ RES_STATE_ACTIVE), 0x37},
+ {MSG_BROADCAST(DEV_GRP_NULL, RES_GRP_ALL, RES_TYPE_ALL, RES_TYPE2_R0,
+ RES_STATE_ACTIVE), 0x2},
+};
+#endif
+
+static int __init twl4030_write_script_byte(u8 address, u8 byte)
+{
+ int err;
+
+ err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, address,
+ R_MEMORY_ADDRESS);
+ err |= twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, byte,
+ R_MEMORY_DATA);
+
+ return err;
+}
+
+static int __init twl4030_write_script_ins(u8 address, u16 pmb_message,
+ u8 delay, u8 next)
+{
+ int err = 0;
+
+ address *= 4;
+ err |= twl4030_write_script_byte(address++, pmb_message >> 8);
+ err |= twl4030_write_script_byte(address++, pmb_message & 0xff);
+ err |= twl4030_write_script_byte(address++, delay);
+ err |= twl4030_write_script_byte(address++, next);
+
+ return err;
+}
+
+static int __init twl4030_write_script(u8 address, struct triton_ins *script,
+ int len)
+{
+ int err = 0;
+
+ for (; len; len--, address++, script++) {
+ if (len == 1)
+ err |= twl4030_write_script_ins(address,
+ script->pmb_message,
+ script->delay,
+ END_OF_SCRIPT);
+ else
+ err |= twl4030_write_script_ins(address,
+ script->pmb_message,
+ script->delay,
+ address + 1);
+ }
+
+ return err;
+}
+
+static int __init config_sleep_wake_sequence(void)
+{
+ int err = 0;
+ u8 data;
+
+ /*
+ * CLKREQ is pulled high on the 2430SDP, therefore, we need to take
+ * it out of the HFCLKOUT DEV_GRP for P1 else HFCLKOUT can't be stopped.
+ */
+
+ err |= twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER,
+ 0x20, R_HFCLKOUT_DEV_GRP);
+
+ /* Set ACTIVE to SLEEP SEQ address in T2 memory*/
+ err |= twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0x2B,
+ R_SEQ_ADD_A2S);
+
+ /* Set SLEEP to ACTIVE SEQ address for P1 and P2 */
+ err |= twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0x2F,
+ R_SEQ_ADD_SA12);
+
+ /* Set SLEEP to ACTIVE SEQ address for P3 */
+ err |= twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0x2F,
+ R_SEQ_ADD_S2A3);
+
+ /* Install Active->Sleep (A2S) sequence */
+ err |= twl4030_write_script(0x2B, sleep_on_seq,
+ ARRAY_SIZE(sleep_on_seq));
+
+ /* Install Sleep->Active (S2A) sequence */
+ err |= twl4030_write_script(0x2F, sleep_off_seq,
+ ARRAY_SIZE(sleep_off_seq));
+
+#if defined(CONFIG_MACH_OMAP_3430SDP) || defined(CONFIG_MACH_OMAP_3430LABRADOR)
+ /* Disabling AC charger effect on sleep-active transitions */
+ err |= twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &data,
+ R_CFG_P1_TRANSITION);
+ data &= 0x0;
+ err |= twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, data ,
+ R_CFG_P1_TRANSITION);
+#endif
+ /* P1/P2/P3 LVL_WAKEUP should be on LEVEL */
+ err |= twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, LVL_WAKEUP,
+ R_P1_SW_EVENTS);
+ err |= twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, LVL_WAKEUP,
+ R_P2_SW_EVENTS);
+ err |= twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, LVL_WAKEUP,
+ R_P3_SW_EVENTS);
+
+ if (err)
+ printk(KERN_ERR "TWL4030 sleep-wake sequence config error\n");
+
+ return err;
+}
+
+
+/* Programming the WARMRESET Sequence on TRITON */
+static int __init config_warmreset_sequence(void)
+{
+
+ int e = 0;
+ u8 rd_data;
+
+ if (!ARRAY_SIZE(t2_wrst_seq))
+ return 0;
+
+ /* Set WARM RESET SEQ address for P1 */
+ e |= twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0x38,
+ R_SEQ_ADD_WARM);
+
+ /* Install Warm Reset sequence */
+ e |= twl4030_write_script(0x38, t2_wrst_seq,
+ ARRAY_SIZE(t2_wrst_seq));
+
+ /* P1/P2/P3 enable WARMRESET */
+ e |= twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &rd_data,
+ R_P1_SW_EVENTS);
+ rd_data |= ENABLE_WARMRESET;
+ e |= twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, rd_data,
+ R_P1_SW_EVENTS);
+
+ e |= twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &rd_data,
+ R_P2_SW_EVENTS);
+ rd_data |= ENABLE_WARMRESET;
+ e |= twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, rd_data,
+ R_P2_SW_EVENTS);
+
+ e |= twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &rd_data,
+ R_P3_SW_EVENTS);
+ rd_data |= ENABLE_WARMRESET;
+ e |= twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, rd_data,
+ R_P3_SW_EVENTS);
+
+ if (e)
+ printk(KERN_ERR
+ "TWL4030 Power Companion Warmreset seq config error\n");
+ return e;
+}
+
+static int __init twl4030_power_init(void)
+{
+ int err = 0;
+
+ err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, KEY_1,
+ R_PROTECT_KEY);
+ err |= twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, KEY_2,
+ R_PROTECT_KEY);
+
+ if (err)
+ return err;
+
+ err = config_sleep_wake_sequence();
+ if (err)
+ return err;
+
+ err = config_warmreset_sequence();
+ if (err)
+ return err;
+
+ err = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0, R_PROTECT_KEY);
+
+ return err;
+
+}
+
+module_init(twl4030_power_init);
projects / linux-2.6-omap-h63xx.git / commitdiff