mfd: Create a common interface for dbx500 PRCMU drivers

This adds a header file that contains the set of functions and
definitions that will be shared between the DB8500 and DB5500
PRCMU drivers.

Signed-off-by: Mattias Nilsson <mattias.i.nilsson@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 549 insertions, 0 deletions

diff --git a/include/linux/mfd/dbx500-prcmu.h b/include/linux/mfd/dbx500-prcmu.h
new file mode 100644
index 000000000000..6c7584d69d8f
--- /dev/null
+++ b/include/linux/mfd/dbx500-prcmu.h
@@ -0,0 +1,549 @@
+/*
+ * Copyright (C) ST Ericsson SA 2011
+ *
+ * License Terms: GNU General Public License v2
+ *
+ * STE Ux500 PRCMU API
+ */
+#ifndef __MACH_PRCMU_H
+#define __MACH_PRCMU_H
+
+#include <linux/interrupt.h>
+#include <linux/notifier.h>
+#include <asm/mach-types.h>
+
+/* PRCMU Wakeup defines */
+enum prcmu_wakeup_index {
+	PRCMU_WAKEUP_INDEX_RTC,
+	PRCMU_WAKEUP_INDEX_RTT0,
+	PRCMU_WAKEUP_INDEX_RTT1,
+	PRCMU_WAKEUP_INDEX_HSI0,
+	PRCMU_WAKEUP_INDEX_HSI1,
+	PRCMU_WAKEUP_INDEX_USB,
+	PRCMU_WAKEUP_INDEX_ABB,
+	PRCMU_WAKEUP_INDEX_ABB_FIFO,
+	PRCMU_WAKEUP_INDEX_ARM,
+	PRCMU_WAKEUP_INDEX_CD_IRQ,
+	NUM_PRCMU_WAKEUP_INDICES
+};
+#define PRCMU_WAKEUP(_name) (BIT(PRCMU_WAKEUP_INDEX_##_name))
+
+/* EPOD (power domain) IDs */
+
+/*
+ * DB8500 EPODs
+ * - EPOD_ID_SVAMMDSP: power domain for SVA MMDSP
+ * - EPOD_ID_SVAPIPE: power domain for SVA pipe
+ * - EPOD_ID_SIAMMDSP: power domain for SIA MMDSP
+ * - EPOD_ID_SIAPIPE: power domain for SIA pipe
+ * - EPOD_ID_SGA: power domain for SGA
+ * - EPOD_ID_B2R2_MCDE: power domain for B2R2 and MCDE
+ * - EPOD_ID_ESRAM12: power domain for ESRAM 1 and 2
+ * - EPOD_ID_ESRAM34: power domain for ESRAM 3 and 4
+ * - NUM_EPOD_ID: number of power domains
+ *
+ * TODO: These should be prefixed.
+ */
+#define EPOD_ID_SVAMMDSP	0
+#define EPOD_ID_SVAPIPE		1
+#define EPOD_ID_SIAMMDSP	2
+#define EPOD_ID_SIAPIPE		3
+#define EPOD_ID_SGA		4
+#define EPOD_ID_B2R2_MCDE	5
+#define EPOD_ID_ESRAM12		6
+#define EPOD_ID_ESRAM34		7
+#define NUM_EPOD_ID		8
+
+/*
+ * DB5500 EPODs
+ */
+#define DB5500_EPOD_ID_BASE 0x0100
+#define DB5500_EPOD_ID_SGA (DB5500_EPOD_ID_BASE + 0)
+#define DB5500_EPOD_ID_HVA (DB5500_EPOD_ID_BASE + 1)
+#define DB5500_EPOD_ID_SIA (DB5500_EPOD_ID_BASE + 2)
+#define DB5500_EPOD_ID_DISP (DB5500_EPOD_ID_BASE + 3)
+#define DB5500_EPOD_ID_ESRAM12 (DB5500_EPOD_ID_BASE + 6)
+#define DB5500_NUM_EPOD_ID 7
+
+/*
+ * state definition for EPOD (power domain)
+ * - EPOD_STATE_NO_CHANGE: The EPOD should remain unchanged
+ * - EPOD_STATE_OFF: The EPOD is switched off
+ * - EPOD_STATE_RAMRET: The EPOD is switched off with its internal RAM in
+ *                         retention
+ * - EPOD_STATE_ON_CLK_OFF: The EPOD is switched on, clock is still off
+ * - EPOD_STATE_ON: Same as above, but with clock enabled
+ */
+#define EPOD_STATE_NO_CHANGE	0x00
+#define EPOD_STATE_OFF		0x01
+#define EPOD_STATE_RAMRET	0x02
+#define EPOD_STATE_ON_CLK_OFF	0x03
+#define EPOD_STATE_ON		0x04
+
+/*
+ * CLKOUT sources
+ */
+#define PRCMU_CLKSRC_CLK38M		0x00
+#define PRCMU_CLKSRC_ACLK		0x01
+#define PRCMU_CLKSRC_SYSCLK		0x02
+#define PRCMU_CLKSRC_LCDCLK		0x03
+#define PRCMU_CLKSRC_SDMMCCLK		0x04
+#define PRCMU_CLKSRC_TVCLK		0x05
+#define PRCMU_CLKSRC_TIMCLK		0x06
+#define PRCMU_CLKSRC_CLK009		0x07
+/* These are only valid for CLKOUT1: */
+#define PRCMU_CLKSRC_SIAMMDSPCLK	0x40
+#define PRCMU_CLKSRC_I2CCLK		0x41
+#define PRCMU_CLKSRC_MSP02CLK		0x42
+#define PRCMU_CLKSRC_ARMPLL_OBSCLK	0x43
+#define PRCMU_CLKSRC_HSIRXCLK		0x44
+#define PRCMU_CLKSRC_HSITXCLK		0x45
+#define PRCMU_CLKSRC_ARMCLKFIX		0x46
+#define PRCMU_CLKSRC_HDMICLK		0x47
+
+/*
+ * Clock identifiers.
+ */
+enum prcmu_clock {
+	PRCMU_SGACLK,
+	PRCMU_UARTCLK,
+	PRCMU_MSP02CLK,
+	PRCMU_MSP1CLK,
+	PRCMU_I2CCLK,
+	PRCMU_SDMMCCLK,
+	PRCMU_SLIMCLK,
+	PRCMU_PER1CLK,
+	PRCMU_PER2CLK,
+	PRCMU_PER3CLK,
+	PRCMU_PER5CLK,
+	PRCMU_PER6CLK,
+	PRCMU_PER7CLK,
+	PRCMU_LCDCLK,
+	PRCMU_BMLCLK,
+	PRCMU_HSITXCLK,
+	PRCMU_HSIRXCLK,
+	PRCMU_HDMICLK,
+	PRCMU_APEATCLK,
+	PRCMU_APETRACECLK,
+	PRCMU_MCDECLK,
+	PRCMU_IPI2CCLK,
+	PRCMU_DSIALTCLK,
+	PRCMU_DMACLK,
+	PRCMU_B2R2CLK,
+	PRCMU_TVCLK,
+	PRCMU_SSPCLK,
+	PRCMU_RNGCLK,
+	PRCMU_UICCCLK,
+	PRCMU_PWMCLK,
+	PRCMU_IRDACLK,
+	PRCMU_IRRCCLK,
+	PRCMU_SIACLK,
+	PRCMU_SVACLK,
+	PRCMU_NUM_REG_CLOCKS,
+	PRCMU_SYSCLK = PRCMU_NUM_REG_CLOCKS,
+	PRCMU_TIMCLK,
+	PRCMU_PLLSOC0,
+	PRCMU_PLLSOC1,
+	PRCMU_PLLDDR,
+};
+
+/**
+ * enum ape_opp - APE OPP states definition
+ * @APE_OPP_INIT:
+ * @APE_NO_CHANGE: The APE operating point is unchanged
+ * @APE_100_OPP: The new APE operating point is ape100opp
+ * @APE_50_OPP: 50%
+ */
+enum ape_opp {
+	APE_OPP_INIT = 0x00,
+	APE_NO_CHANGE = 0x01,
+	APE_100_OPP = 0x02,
+	APE_50_OPP = 0x03
+};
+
+/**
+ * enum arm_opp - ARM OPP states definition
+ * @ARM_OPP_INIT:
+ * @ARM_NO_CHANGE: The ARM operating point is unchanged
+ * @ARM_100_OPP: The new ARM operating point is arm100opp
+ * @ARM_50_OPP: The new ARM operating point is arm50opp
+ * @ARM_MAX_OPP: Operating point is "max" (more than 100)
+ * @ARM_MAX_FREQ100OPP: Set max opp if available, else 100
+ * @ARM_EXTCLK: The new ARM operating point is armExtClk
+ */
+enum arm_opp {
+	ARM_OPP_INIT = 0x00,
+	ARM_NO_CHANGE = 0x01,
+	ARM_100_OPP = 0x02,
+	ARM_50_OPP = 0x03,
+	ARM_MAX_OPP = 0x04,
+	ARM_MAX_FREQ100OPP = 0x05,
+	ARM_EXTCLK = 0x07
+};
+
+/**
+ * enum ddr_opp - DDR OPP states definition
+ * @DDR_100_OPP: The new DDR operating point is ddr100opp
+ * @DDR_50_OPP: The new DDR operating point is ddr50opp
+ * @DDR_25_OPP: The new DDR operating point is ddr25opp
+ */
+enum ddr_opp {
+	DDR_100_OPP = 0x00,
+	DDR_50_OPP = 0x01,
+	DDR_25_OPP = 0x02,
+};
+
+/*
+ * Definitions for controlling ESRAM0 in deep sleep.
+ */
+#define ESRAM0_DEEP_SLEEP_STATE_OFF 1
+#define ESRAM0_DEEP_SLEEP_STATE_RET 2
+
+/**
+ * enum ddr_pwrst - DDR power states definition
+ * @DDR_PWR_STATE_UNCHANGED: SDRAM and DDR controller state is unchanged
+ * @DDR_PWR_STATE_ON:
+ * @DDR_PWR_STATE_OFFLOWLAT:
+ * @DDR_PWR_STATE_OFFHIGHLAT:
+ */
+enum ddr_pwrst {
+	DDR_PWR_STATE_UNCHANGED     = 0x00,
+	DDR_PWR_STATE_ON            = 0x01,
+	DDR_PWR_STATE_OFFLOWLAT     = 0x02,
+	DDR_PWR_STATE_OFFHIGHLAT    = 0x03
+};
+
+#include <linux/mfd/db8500-prcmu.h>
+#include <linux/mfd/db5500-prcmu.h>
+
+#if defined(CONFIG_UX500_SOC_DB8500) || defined(CONFIG_UX500_SOC_DB5500)
+
+static inline void __init prcmu_early_init(void)
+{
+	if (machine_is_u5500())
+		return db5500_prcmu_early_init();
+	else
+		return db8500_prcmu_early_init();
+}
+
+static inline int prcmu_set_power_state(u8 state, bool keep_ulp_clk,
+		bool keep_ap_pll)
+{
+	if (machine_is_u5500())
+		return db5500_prcmu_set_power_state(state, keep_ulp_clk,
+			keep_ap_pll);
+	else
+		return db8500_prcmu_set_power_state(state, keep_ulp_clk,
+			keep_ap_pll);
+}
+
+static inline int prcmu_set_epod(u16 epod_id, u8 epod_state)
+{
+	if (machine_is_u5500())
+		return db5500_prcmu_set_epod(epod_id, epod_state);
+	else
+		return db8500_prcmu_set_epod(epod_id, epod_state);
+}
+
+static inline void prcmu_enable_wakeups(u32 wakeups)
+{
+	if (machine_is_u5500())
+		db5500_prcmu_enable_wakeups(wakeups);
+	else
+		db8500_prcmu_enable_wakeups(wakeups);
+}
+
+static inline void prcmu_disable_wakeups(void)
+{
+	prcmu_enable_wakeups(0);
+}
+
+static inline void prcmu_config_abb_event_readout(u32 abb_events)
+{
+	if (machine_is_u5500())
+		db5500_prcmu_config_abb_event_readout(abb_events);
+	else
+		db8500_prcmu_config_abb_event_readout(abb_events);
+}
+
+static inline void prcmu_get_abb_event_buffer(void __iomem **buf)
+{
+	if (machine_is_u5500())
+		db5500_prcmu_get_abb_event_buffer(buf);
+	else
+		db8500_prcmu_get_abb_event_buffer(buf);
+}
+
+int prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size);
+int prcmu_abb_write(u8 slave, u8 reg, u8 *value, u8 size);
+
+int prcmu_config_clkout(u8 clkout, u8 source, u8 div);
+
+static inline int prcmu_request_clock(u8 clock, bool enable)
+{
+	if (machine_is_u5500())
+		return db5500_prcmu_request_clock(clock, enable);
+	else
+		return db8500_prcmu_request_clock(clock, enable);
+}
+
+int prcmu_set_ape_opp(u8 opp);
+int prcmu_get_ape_opp(void);
+int prcmu_set_ddr_opp(u8 opp);
+int prcmu_get_ddr_opp(void);
+
+static inline int prcmu_set_arm_opp(u8 opp)
+{
+	if (machine_is_u5500())
+		return db5500_prcmu_set_arm_opp(opp);
+	else
+		return db8500_prcmu_set_arm_opp(opp);
+}
+
+static inline int prcmu_get_arm_opp(void)
+{
+	if (machine_is_u5500())
+		return db5500_prcmu_get_arm_opp();
+	else
+		return db8500_prcmu_get_arm_opp();
+}
+
+static inline void prcmu_system_reset(u16 reset_code)
+{
+	if (machine_is_u5500())
+		return db5500_prcmu_system_reset(reset_code);
+	else
+		return db8500_prcmu_system_reset(reset_code);
+}
+
+static inline u16 prcmu_get_reset_code(void)
+{
+	if (machine_is_u5500())
+		return db5500_prcmu_get_reset_code();
+	else
+		return db8500_prcmu_get_reset_code();
+}
+
+void prcmu_ac_wake_req(void);
+void prcmu_ac_sleep_req(void);
+void prcmu_modem_reset(void);
+static inline bool prcmu_is_ac_wake_requested(void)
+{
+	if (machine_is_u5500())
+		return db5500_prcmu_is_ac_wake_requested();
+	else
+		return db8500_prcmu_is_ac_wake_requested();
+}
+
+static inline int prcmu_set_display_clocks(void)
+{
+	if (machine_is_u5500())
+		return db5500_prcmu_set_display_clocks();
+	else
+		return db8500_prcmu_set_display_clocks();
+}
+
+static inline int prcmu_disable_dsipll(void)
+{
+	if (machine_is_u5500())
+		return db5500_prcmu_disable_dsipll();
+	else
+		return db8500_prcmu_disable_dsipll();
+}
+
+static inline int prcmu_enable_dsipll(void)
+{
+	if (machine_is_u5500())
+		return db5500_prcmu_enable_dsipll();
+	else
+		return db8500_prcmu_enable_dsipll();
+}
+
+static inline int prcmu_config_esram0_deep_sleep(u8 state)
+{
+	if (machine_is_u5500())
+		return db5500_prcmu_config_esram0_deep_sleep(state);
+	else
+		return db8500_prcmu_config_esram0_deep_sleep(state);
+}
+#else
+
+static inline void __init prcmu_early_init(void) {}
+
+static inline int prcmu_set_power_state(u8 state, bool keep_ulp_clk,
+	bool keep_ap_pll)
+{
+	return 0;
+}
+
+static inline int prcmu_set_epod(u16 epod_id, u8 epod_state)
+{
+	return 0;
+}
+
+static inline void prcmu_enable_wakeups(u32 wakeups) {}
+
+static inline void prcmu_disable_wakeups(void) {}
+
+static inline int prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size)
+{
+	return -ENOSYS;
+}
+
+static inline int prcmu_abb_write(u8 slave, u8 reg, u8 *value, u8 size)
+{
+	return -ENOSYS;
+}
+
+static inline int prcmu_config_clkout(u8 clkout, u8 source, u8 div)
+{
+	return 0;
+}
+
+static inline int prcmu_request_clock(u8 clock, bool enable)
+{
+	return 0;
+}
+
+static inline int prcmu_set_ape_opp(u8 opp)
+{
+	return 0;
+}
+
+static inline int prcmu_get_ape_opp(void)
+{
+	return APE_100_OPP;
+}
+
+static inline int prcmu_set_arm_opp(u8 opp)
+{
+	return 0;
+}
+
+static inline int prcmu_get_arm_opp(void)
+{
+	return ARM_100_OPP;
+}
+
+static inline int prcmu_set_ddr_opp(u8 opp)
+{
+	return 0;
+}
+
+static inline int prcmu_get_ddr_opp(void)
+{
+	return DDR_100_OPP;
+}
+
+static inline void prcmu_system_reset(u16 reset_code) {}
+
+static inline u16 prcmu_get_reset_code(void)
+{
+	return 0;
+}
+
+static inline void prcmu_ac_wake_req(void) {}
+
+static inline void prcmu_ac_sleep_req(void) {}
+
+static inline void prcmu_modem_reset(void) {}
+
+static inline bool prcmu_is_ac_wake_requested(void)
+{
+	return false;
+}
+
+static inline int prcmu_set_display_clocks(void)
+{
+	return 0;
+}
+
+static inline int prcmu_disable_dsipll(void)
+{
+	return 0;
+}
+
+static inline int prcmu_enable_dsipll(void)
+{
+	return 0;
+}
+
+static inline int prcmu_config_esram0_deep_sleep(u8 state)
+{
+	return 0;
+}
+
+static inline void prcmu_config_abb_event_readout(u32 abb_events) {}
+
+static inline void prcmu_get_abb_event_buffer(void __iomem **buf)
+{
+	*buf = NULL;
+}
+
+#endif
+
+/* PRCMU QoS APE OPP class */
+#define PRCMU_QOS_APE_OPP 1
+#define PRCMU_QOS_DDR_OPP 2
+#define PRCMU_QOS_DEFAULT_VALUE -1
+
+#ifdef CONFIG_UX500_PRCMU_QOS_POWER
+
+unsigned long prcmu_qos_get_cpufreq_opp_delay(void);
+void prcmu_qos_set_cpufreq_opp_delay(unsigned long);
+void prcmu_qos_force_opp(int, s32);
+int prcmu_qos_requirement(int pm_qos_class);
+int prcmu_qos_add_requirement(int pm_qos_class, char *name, s32 value);
+int prcmu_qos_update_requirement(int pm_qos_class, char *name, s32 new_value);
+void prcmu_qos_remove_requirement(int pm_qos_class, char *name);
+int prcmu_qos_add_notifier(int prcmu_qos_class,
+			   struct notifier_block *notifier);
+int prcmu_qos_remove_notifier(int prcmu_qos_class,
+			      struct notifier_block *notifier);
+
+#else
+
+static inline unsigned long prcmu_qos_get_cpufreq_opp_delay(void)
+{
+	return 0;
+}
+
+static inline void prcmu_qos_set_cpufreq_opp_delay(unsigned long n) {}
+
+static inline void prcmu_qos_force_opp(int prcmu_qos_class, s32 i) {}
+
+static inline int prcmu_qos_requirement(int prcmu_qos_class)
+{
+	return 0;
+}
+
+static inline int prcmu_qos_add_requirement(int prcmu_qos_class,
+					    char *name, s32 value)
+{
+	return 0;
+}
+
+static inline int prcmu_qos_update_requirement(int prcmu_qos_class,
+					       char *name, s32 new_value)
+{
+	return 0;
+}
+
+static inline void prcmu_qos_remove_requirement(int prcmu_qos_class, char *name)
+{
+}
+
+static inline int prcmu_qos_add_notifier(int prcmu_qos_class,
+					 struct notifier_block *notifier)
+{
+	return 0;
+}
+static inline int prcmu_qos_remove_notifier(int prcmu_qos_class,
+					    struct notifier_block *notifier)
+{
+	return 0;
+}
+
+#endif
+
+#endif /* __MACH_PRCMU_H */