mfd: add DB5500 PRCMU driver

This adds the DB5500 PRCMU driver. Right now this one is pretty
restricted in functionality, exposing a simple interface to send
I2C messages.

Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 115 insertions, 0 deletions

diff --git a/drivers/mfd/db5500-prcmu-regs.h b/drivers/mfd/db5500-prcmu-regs.h
new file mode 100644
index 000000000000..9a8e9e4ddd33
--- /dev/null
+++ b/drivers/mfd/db5500-prcmu-regs.h
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) STMicroelectronics 2009
+ * Copyright (C) ST-Ericsson SA 2010
+ *
+ * Author: Kumar Sanghvi <kumar.sanghvi@stericsson.com>
+ * Author: Sundar Iyer <sundar.iyer@stericsson.com>
+ *
+ * License Terms: GNU General Public License v2
+ *
+ * PRCM Unit registers
+ */
+
+#ifndef __MACH_PRCMU_REGS_H
+#define __MACH_PRCMU_REGS_H
+
+#include <mach/hardware.h>
+
+#define PRCM_ARM_PLLDIVPS       (_PRCMU_BASE + 0x118)
+#define PRCM_ARM_PLLDIVPS_ARM_BRM_RATE          0x3f
+#define PRCM_ARM_PLLDIVPS_MAX_MASK              0xf
+
+#define PRCM_PLLARM_LOCKP       (_PRCMU_BASE + 0x0a8)
+#define PRCM_PLLARM_LOCKP_PRCM_PLLARM_LOCKP3    0x2
+
+#define PRCM_ARM_CHGCLKREQ      (_PRCMU_BASE + 0x114)
+#define PRCM_ARM_CHGCLKREQ_PRCM_ARM_CHGCLKREQ   0x1
+
+#define PRCM_PLLARM_ENABLE      (_PRCMU_BASE + 0x98)
+#define PRCM_PLLARM_ENABLE_PRCM_PLLARM_ENABLE   0x1
+#define PRCM_PLLARM_ENABLE_PRCM_PLLARM_COUNTON  0x100
+
+#define PRCM_ARMCLKFIX_MGT      (_PRCMU_BASE + 0x0)
+#define PRCM_A9_RESETN_CLR      (_PRCMU_BASE + 0x1f4)
+#define PRCM_A9_RESETN_SET      (_PRCMU_BASE + 0x1f0)
+#define PRCM_ARM_LS_CLAMP       (_PRCMU_BASE + 0x30c)
+#define PRCM_SRAM_A9            (_PRCMU_BASE + 0x308)
+
+/* ARM WFI Standby signal register */
+#define PRCM_ARM_WFI_STANDBY    (_PRCMU_BASE + 0x130)
+#define PRCM_IOCR               (_PRCMU_BASE + 0x310)
+#define PRCM_IOCR_IOFORCE                       0x1
+
+/* CPU mailbox registers */
+#define PRCM_MBOX_CPU_VAL       (_PRCMU_BASE + 0x0fc)
+#define PRCM_MBOX_CPU_SET       (_PRCMU_BASE + 0x100)
+#define PRCM_MBOX_CPU_CLR       (_PRCMU_BASE + 0x104)
+
+/* Dual A9 core interrupt management unit registers */
+#define PRCM_A9_MASK_REQ        (_PRCMU_BASE + 0x328)
+#define PRCM_A9_MASK_REQ_PRCM_A9_MASK_REQ       0x1
+
+#define PRCM_A9_MASK_ACK        (_PRCMU_BASE + 0x32c)
+#define PRCM_ARMITMSK31TO0      (_PRCMU_BASE + 0x11c)
+#define PRCM_ARMITMSK63TO32     (_PRCMU_BASE + 0x120)
+#define PRCM_ARMITMSK95TO64     (_PRCMU_BASE + 0x124)
+#define PRCM_ARMITMSK127TO96    (_PRCMU_BASE + 0x128)
+#define PRCM_POWER_STATE_VAL    (_PRCMU_BASE + 0x25C)
+#define PRCM_ARMITVAL31TO0      (_PRCMU_BASE + 0x260)
+#define PRCM_ARMITVAL63TO32     (_PRCMU_BASE + 0x264)
+#define PRCM_ARMITVAL95TO64     (_PRCMU_BASE + 0x268)
+#define PRCM_ARMITVAL127TO96    (_PRCMU_BASE + 0x26C)
+
+#define PRCM_HOSTACCESS_REQ     (_PRCMU_BASE + 0x334)
+#define ARM_WAKEUP_MODEM        0x1
+
+#define PRCM_ARM_IT1_CLEAR      (_PRCMU_BASE + 0x48C)
+#define PRCM_ARM_IT1_VAL        (_PRCMU_BASE + 0x494)
+#define PRCM_HOLD_EVT           (_PRCMU_BASE + 0x174)
+
+#define PRCM_ITSTATUS0          (_PRCMU_BASE + 0x148)
+#define PRCM_ITSTATUS1          (_PRCMU_BASE + 0x150)
+#define PRCM_ITSTATUS2          (_PRCMU_BASE + 0x158)
+#define PRCM_ITSTATUS3          (_PRCMU_BASE + 0x160)
+#define PRCM_ITSTATUS4          (_PRCMU_BASE + 0x168)
+#define PRCM_ITSTATUS5          (_PRCMU_BASE + 0x484)
+#define PRCM_ITCLEAR5           (_PRCMU_BASE + 0x488)
+#define PRCM_ARMIT_MASKXP70_IT  (_PRCMU_BASE + 0x1018)
+
+/* System reset register */
+#define PRCM_APE_SOFTRST        (_PRCMU_BASE + 0x228)
+
+/* Level shifter and clamp control registers */
+#define PRCM_MMIP_LS_CLAMP_SET     (_PRCMU_BASE + 0x420)
+#define PRCM_MMIP_LS_CLAMP_CLR     (_PRCMU_BASE + 0x424)
+
+/* PRCMU clock/PLL/reset registers */
+#define PRCM_PLLDSI_FREQ           (_PRCMU_BASE + 0x500)
+#define PRCM_PLLDSI_ENABLE         (_PRCMU_BASE + 0x504)
+#define PRCM_PLLDSI_LOCKP          (_PRCMU_BASE + 0x508)
+#define PRCM_LCDCLK_MGT            (_PRCMU_BASE + 0x044)
+#define PRCM_MCDECLK_MGT           (_PRCMU_BASE + 0x064)
+#define PRCM_HDMICLK_MGT           (_PRCMU_BASE + 0x058)
+#define PRCM_TVCLK_MGT             (_PRCMU_BASE + 0x07c)
+#define PRCM_DSI_PLLOUT_SEL        (_PRCMU_BASE + 0x530)
+#define PRCM_DSITVCLK_DIV          (_PRCMU_BASE + 0x52C)
+#define PRCM_PLLDSI_LOCKP          (_PRCMU_BASE + 0x508)
+#define PRCM_APE_RESETN_SET        (_PRCMU_BASE + 0x1E4)
+#define PRCM_APE_RESETN_CLR        (_PRCMU_BASE + 0x1E8)
+#define PRCM_CLKOCR                (_PRCMU_BASE + 0x1CC)
+
+/* ePOD and memory power signal control registers */
+#define PRCM_EPOD_C_SET            (_PRCMU_BASE + 0x410)
+#define PRCM_SRAM_LS_SLEEP         (_PRCMU_BASE + 0x304)
+
+/* Debug power control unit registers */
+#define PRCM_POWER_STATE_SET       (_PRCMU_BASE + 0x254)
+
+/* Miscellaneous unit registers */
+#define PRCM_DSI_SW_RESET          (_PRCMU_BASE + 0x324)
+#define PRCM_GPIOCR                (_PRCMU_BASE + 0x138)
+#define PRCM_GPIOCR_DBG_STM_MOD_CMD1            0x800
+#define PRCM_GPIOCR_DBG_UARTMOD_CMD0            0x1
+
+
+#endif /* __MACH_PRCMU__REGS_H */