mfd: OMAP: Board-specifc twl4030 DPS scripts for RX51 board

Add support for Dynamic Power Switching (DPS) for the RX51 board.

These scripts are still a work-in-progress. I'll keep sending patches to
update the scripts as they are optimised.

Signed-off-by: Amit Kucheria <amit.kucheria@verdurent.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 120 insertions, 2 deletions

diff --git a/arch/arm/mach-omap2/board-rx51-peripherals.c b/arch/arm/mach-omap2/board-rx51-peripherals.c
index 56d931a425f7..e70baa799018 100644
--- a/arch/arm/mach-omap2/board-rx51-peripherals.c
+++ b/arch/arm/mach-omap2/board-rx51-peripherals.c
@@ -1,5 +1,5 @@
 /*
- * linux/arch/arm/mach-omap2/board-rx51-flash.c
+ * linux/arch/arm/mach-omap2/board-rx51-peripherals.c
  *
  * Copyright (C) 2008-2009 Nokia
  *
@@ -282,7 +282,124 @@ static struct twl4030_usb_data rx51_usb_data = {
         .usb_mode               = T2_USB_MODE_ULPI,
 };
 
-static struct twl4030_platform_data rx51_twldata = {
+static struct twl4030_ins sleep_on_seq[] __initdata = {
+/*
+ * Turn off VDD1 and VDD2.
+ */
+        {MSG_SINGULAR(DEV_GRP_P1, 0xf, RES_STATE_OFF), 4},
+        {MSG_SINGULAR(DEV_GRP_P1, 0x10, RES_STATE_OFF), 2},
+/*
+ * And also turn off the OMAP3 PLLs and the sysclk output.
+ */
+        {MSG_SINGULAR(DEV_GRP_P1, 0x7, RES_STATE_OFF), 3},
+        {MSG_SINGULAR(DEV_GRP_P1, 0x17, RES_STATE_OFF), 3},
+};
+
+static struct twl4030_script sleep_on_script __initdata = {
+        .script = sleep_on_seq,
+        .size   = ARRAY_SIZE(sleep_on_seq),
+        .flags  = TWL4030_SLEEP_SCRIPT,
+};
+
+static struct twl4030_ins wakeup_seq[] __initdata = {
+/*
+ * Reenable the OMAP3 PLLs.
+ * Wakeup VDD1 and VDD2.
+ * Reenable sysclk output.
+ */
+        {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},
+};
+
+static struct twl4030_script wakeup_script __initdata = {
+        .script = wakeup_seq,
+        .size   = ARRAY_SIZE(wakeup_seq),
+        .flags  = TWL4030_WAKEUP12_SCRIPT,
+};
+
+static struct twl4030_ins wakeup_p3_seq[] __initdata = {
+/*
+ * Wakeup VDD1 (dummy to be able to insert a delay)
+ * Enable CLKEN
+ */
+        {MSG_SINGULAR(DEV_GRP_P1, 0x17, RES_STATE_ACTIVE), 3},
+};
+
+static struct twl4030_script wakeup_p3_script __initdata = {
+        .script = wakeup_p3_seq,
+        .size   = ARRAY_SIZE(wakeup_p3_seq),
+        .flags  = TWL4030_WAKEUP3_SCRIPT,
+};
+
+static struct twl4030_ins wrst_seq[] __initdata = {
+/*
+ * Reset twl4030.
+ * Reset VDD1 regulator.
+ * Reset VDD2 regulator.
+ * Reset VPLL1 regulator.
+ * Enable sysclk output.
+ * Reenable twl4030.
+ */
+        {MSG_SINGULAR(DEV_GRP_NULL, RES_RESET, RES_STATE_OFF), 2},
+        {MSG_BROADCAST(DEV_GRP_NULL, RES_GRP_ALL, 0, 1, RES_STATE_ACTIVE),
+                0x13},
+        {MSG_BROADCAST(DEV_GRP_NULL, RES_GRP_PP, 0, 2, RES_STATE_WRST), 0x13},
+        {MSG_BROADCAST(DEV_GRP_NULL, RES_GRP_PP, 0, 3, RES_STATE_OFF), 0x13},
+        {MSG_SINGULAR(DEV_GRP_NULL, RES_VDD1, RES_STATE_WRST), 0x13},
+        {MSG_SINGULAR(DEV_GRP_NULL, RES_VDD2, RES_STATE_WRST), 0x13},
+        {MSG_SINGULAR(DEV_GRP_NULL, RES_VPLL1, RES_STATE_WRST), 0x35},
+        {MSG_SINGULAR(DEV_GRP_P1, RES_HFCLKOUT, RES_STATE_ACTIVE), 2},
+        {MSG_SINGULAR(DEV_GRP_NULL, RES_RESET, RES_STATE_ACTIVE), 2},
+};
+
+static struct twl4030_script wrst_script __initdata = {
+        .script = wrst_seq,
+        .size   = ARRAY_SIZE(wrst_seq),
+        .flags  = TWL4030_WRST_SCRIPT,
+};
+
+static struct twl4030_script *twl4030_scripts[] __initdata = {
+        /* wakeup12 script should be loaded before sleep script, otherwise a
+           board might hit retention before loading of wakeup script is
+           completed. This can cause boot failures depending on timing issues.
+        */
+        &wakeup_script,
+        &sleep_on_script,
+        &wakeup_p3_script,
+        &wrst_script,
+};
+
+static struct twl4030_resconfig twl4030_rconfig[] __initdata = {
+        { .resource = RES_VINTANA1, .devgroup = -1, .type = -1, .type2 = 1 },
+        { .resource = RES_VINTANA2, .devgroup = -1, .type = -1, .type2 = 1 },
+        { .resource = RES_VINTDIG, .devgroup = -1, .type = -1, .type2 = 1 },
+        { .resource = RES_VMMC1, .devgroup = -1, .type = -1, .type2 = 3},
+        { .resource = RES_VMMC2, .devgroup = DEV_GRP_NULL, .type = -1,
+          .type2 = 3},
+        { .resource = RES_VAUX1, .devgroup = -1, .type = -1, .type2 = 3},
+        { .resource = RES_VAUX2, .devgroup = -1, .type = -1, .type2 = 3},
+        { .resource = RES_VAUX3, .devgroup = -1, .type = -1, .type2 = 3},
+        { .resource = RES_VAUX4, .devgroup = -1, .type = -1, .type2 = 3},
+        { .resource = RES_VPLL2, .devgroup = -1, .type = -1, .type2 = 3},
+        { .resource = RES_VDAC, .devgroup = -1, .type = -1, .type2 = 3},
+        { .resource = RES_VSIM, .devgroup = DEV_GRP_NULL, .type = -1,
+          .type2 = 3},
+        { .resource = RES_CLKEN, .devgroup = DEV_GRP_P3, .type = -1,
+                .type2 = 1 },
+        { 0, 0},
+};
+
+static struct twl4030_power_data rx51_t2scripts_data __initdata = {
+        .scripts        = twl4030_scripts,
+        .num = ARRAY_SIZE(twl4030_scripts),
+        .resource_config = twl4030_rconfig,
+};
+
+
+
+static struct twl4030_platform_data rx51_twldata __initdata = {
         .irq_base               = TWL4030_IRQ_BASE,
         .irq_end                = TWL4030_IRQ_END,
 
@@ -291,6 +408,7 @@ static struct twl4030_platform_data rx51_twldata = {
         .keypad                 = &rx51_kp_data,
         .madc                   = &rx51_madc_data,
         .usb                    = &rx51_usb_data,
+        .power                  = &rx51_t2scripts_data,
 
         .vaux1                  = &rx51_vaux1,
         .vaux2                  = &rx51_vaux2,