// SPDX-License-Identifier: GPL-2.0-only

  /*
   * Copyright (c) 2014, Sony Mobile Communications AB.
   * Copyright (c) 2013, The Linux Foundation. All rights reserved.
   * Author: Bjorn Andersson <bjorn.andersson@sonymobile.com>

   */
  
  #include <linux/module.h>
  #include <linux/platform_device.h>
  #include <linux/of_platform.h>
  #include <linux/io.h>
  #include <linux/interrupt.h>
  #include <linux/mfd/qcom_rpm.h>
  #include <linux/mfd/syscon.h>
  #include <linux/regmap.h>

  #include <linux/clk.h>

  
  #include <dt-bindings/mfd/qcom-rpm.h>
  
  struct qcom_rpm_resource {
  	unsigned target_id;
  	unsigned status_id;
  	unsigned select_id;
  	unsigned size;
  };
  
  struct qcom_rpm_data {
  	u32 version;
  	const struct qcom_rpm_resource *resource_table;

  	unsigned int n_resources;
  	unsigned int req_ctx_off;
  	unsigned int req_sel_off;
  	unsigned int ack_ctx_off;
  	unsigned int ack_sel_off;

  	unsigned int req_sel_size;
  	unsigned int ack_sel_size;

  };
  
  struct qcom_rpm {
  	struct device *dev;
  	struct regmap *ipc_regmap;
  	unsigned ipc_offset;
  	unsigned ipc_bit;

  	struct clk *ramclk;

  
  	struct completion ack;
  	struct mutex lock;
  
  	void __iomem *status_regs;
  	void __iomem *ctrl_regs;
  	void __iomem *req_regs;
  
  	u32 ack_status;
  
  	const struct qcom_rpm_data *data;
  };
  
  #define RPM_STATUS_REG(rpm, i)	((rpm)->status_regs + (i) * 4)
  #define RPM_CTRL_REG(rpm, i)	((rpm)->ctrl_regs + (i) * 4)
  #define RPM_REQ_REG(rpm, i)	((rpm)->req_regs + (i) * 4)
  
  #define RPM_REQUEST_TIMEOUT	(5 * HZ)

  #define RPM_MAX_SEL_SIZE	7

  
  #define RPM_NOTIFICATION	BIT(30)
  #define RPM_REJECTED		BIT(31)

  static const struct qcom_rpm_resource apq8064_rpm_resource_table[] = {
  	[QCOM_RPM_CXO_CLK] =			{ 25, 9, 5, 1 },
  	[QCOM_RPM_PXO_CLK] =			{ 26, 10, 6, 1 },
  	[QCOM_RPM_APPS_FABRIC_CLK] =		{ 27, 11, 8, 1 },
  	[QCOM_RPM_SYS_FABRIC_CLK] =		{ 28, 12, 9, 1 },
  	[QCOM_RPM_MM_FABRIC_CLK] =		{ 29, 13, 10, 1 },
  	[QCOM_RPM_DAYTONA_FABRIC_CLK] =		{ 30, 14, 11, 1 },
  	[QCOM_RPM_SFPB_CLK] =			{ 31, 15, 12, 1 },
  	[QCOM_RPM_CFPB_CLK] =			{ 32, 16, 13, 1 },
  	[QCOM_RPM_MMFPB_CLK] =			{ 33, 17, 14, 1 },
  	[QCOM_RPM_EBI1_CLK] =			{ 34, 18, 16, 1 },
  	[QCOM_RPM_APPS_FABRIC_HALT] =		{ 35, 19, 18, 1 },
  	[QCOM_RPM_APPS_FABRIC_MODE] =		{ 37, 20, 19, 1 },
  	[QCOM_RPM_APPS_FABRIC_IOCTL] =		{ 40, 21, 20, 1 },
  	[QCOM_RPM_APPS_FABRIC_ARB] =		{ 41, 22, 21, 12 },
  	[QCOM_RPM_SYS_FABRIC_HALT] =		{ 53, 23, 22, 1 },
  	[QCOM_RPM_SYS_FABRIC_MODE] =		{ 55, 24, 23, 1 },
  	[QCOM_RPM_SYS_FABRIC_IOCTL] =		{ 58, 25, 24, 1 },
  	[QCOM_RPM_SYS_FABRIC_ARB] =		{ 59, 26, 25, 30 },
  	[QCOM_RPM_MM_FABRIC_HALT] =		{ 89, 27, 26, 1 },
  	[QCOM_RPM_MM_FABRIC_MODE] =		{ 91, 28, 27, 1 },
  	[QCOM_RPM_MM_FABRIC_IOCTL] =		{ 94, 29, 28, 1 },
  	[QCOM_RPM_MM_FABRIC_ARB] =		{ 95, 30, 29, 21 },
  	[QCOM_RPM_PM8921_SMPS1] =		{ 116, 31, 30, 2 },
  	[QCOM_RPM_PM8921_SMPS2] =		{ 118, 33, 31, 2 },
  	[QCOM_RPM_PM8921_SMPS3] =		{ 120, 35, 32, 2 },
  	[QCOM_RPM_PM8921_SMPS4] =		{ 122, 37, 33, 2 },
  	[QCOM_RPM_PM8921_SMPS5] =		{ 124, 39, 34, 2 },
  	[QCOM_RPM_PM8921_SMPS6] =		{ 126, 41, 35, 2 },
  	[QCOM_RPM_PM8921_SMPS7] =		{ 128, 43, 36, 2 },
  	[QCOM_RPM_PM8921_SMPS8] =		{ 130, 45, 37, 2 },
  	[QCOM_RPM_PM8921_LDO1] =		{ 132, 47, 38, 2 },
  	[QCOM_RPM_PM8921_LDO2] =		{ 134, 49, 39, 2 },
  	[QCOM_RPM_PM8921_LDO3] =		{ 136, 51, 40, 2 },
  	[QCOM_RPM_PM8921_LDO4] =		{ 138, 53, 41, 2 },
  	[QCOM_RPM_PM8921_LDO5] =		{ 140, 55, 42, 2 },
  	[QCOM_RPM_PM8921_LDO6] =		{ 142, 57, 43, 2 },
  	[QCOM_RPM_PM8921_LDO7] =		{ 144, 59, 44, 2 },
  	[QCOM_RPM_PM8921_LDO8] =		{ 146, 61, 45, 2 },
  	[QCOM_RPM_PM8921_LDO9] =		{ 148, 63, 46, 2 },
  	[QCOM_RPM_PM8921_LDO10] =		{ 150, 65, 47, 2 },
  	[QCOM_RPM_PM8921_LDO11] =		{ 152, 67, 48, 2 },
  	[QCOM_RPM_PM8921_LDO12] =		{ 154, 69, 49, 2 },
  	[QCOM_RPM_PM8921_LDO13] =		{ 156, 71, 50, 2 },
  	[QCOM_RPM_PM8921_LDO14] =		{ 158, 73, 51, 2 },
  	[QCOM_RPM_PM8921_LDO15] =		{ 160, 75, 52, 2 },
  	[QCOM_RPM_PM8921_LDO16] =		{ 162, 77, 53, 2 },
  	[QCOM_RPM_PM8921_LDO17] =		{ 164, 79, 54, 2 },
  	[QCOM_RPM_PM8921_LDO18] =		{ 166, 81, 55, 2 },
  	[QCOM_RPM_PM8921_LDO19] =		{ 168, 83, 56, 2 },
  	[QCOM_RPM_PM8921_LDO20] =		{ 170, 85, 57, 2 },
  	[QCOM_RPM_PM8921_LDO21] =		{ 172, 87, 58, 2 },
  	[QCOM_RPM_PM8921_LDO22] =		{ 174, 89, 59, 2 },
  	[QCOM_RPM_PM8921_LDO23] =		{ 176, 91, 60, 2 },
  	[QCOM_RPM_PM8921_LDO24] =		{ 178, 93, 61, 2 },
  	[QCOM_RPM_PM8921_LDO25] =		{ 180, 95, 62, 2 },
  	[QCOM_RPM_PM8921_LDO26] =		{ 182, 97, 63, 2 },
  	[QCOM_RPM_PM8921_LDO27] =		{ 184, 99, 64, 2 },
  	[QCOM_RPM_PM8921_LDO28] =		{ 186, 101, 65, 2 },
  	[QCOM_RPM_PM8921_LDO29] =		{ 188, 103, 66, 2 },
  	[QCOM_RPM_PM8921_CLK1] =		{ 190, 105, 67, 2 },
  	[QCOM_RPM_PM8921_CLK2] =		{ 192, 107, 68, 2 },
  	[QCOM_RPM_PM8921_LVS1] =		{ 194, 109, 69, 1 },
  	[QCOM_RPM_PM8921_LVS2] =		{ 195, 110, 70, 1 },
  	[QCOM_RPM_PM8921_LVS3] =		{ 196, 111, 71, 1 },
  	[QCOM_RPM_PM8921_LVS4] =		{ 197, 112, 72, 1 },
  	[QCOM_RPM_PM8921_LVS5] =		{ 198, 113, 73, 1 },
  	[QCOM_RPM_PM8921_LVS6] =		{ 199, 114, 74, 1 },
  	[QCOM_RPM_PM8921_LVS7] =		{ 200, 115, 75, 1 },
  	[QCOM_RPM_PM8821_SMPS1] =		{ 201, 116, 76, 2 },
  	[QCOM_RPM_PM8821_SMPS2] =		{ 203, 118, 77, 2 },
  	[QCOM_RPM_PM8821_LDO1] =		{ 205, 120, 78, 2 },
  	[QCOM_RPM_PM8921_NCP] =			{ 207, 122, 80, 2 },
  	[QCOM_RPM_CXO_BUFFERS] =		{ 209, 124, 81, 1 },
  	[QCOM_RPM_USB_OTG_SWITCH] =		{ 210, 125, 82, 1 },
  	[QCOM_RPM_HDMI_SWITCH] =		{ 211, 126, 83, 1 },
  	[QCOM_RPM_DDR_DMM] =			{ 212, 127, 84, 2 },

  	[QCOM_RPM_QDSS_CLK] =			{ 214, ~0, 7, 1 },

  	[QCOM_RPM_VDDMIN_GPIO] =		{ 215, 131, 89, 1 },
  };
  
  static const struct qcom_rpm_data apq8064_template = {
  	.version = 3,
  	.resource_table = apq8064_rpm_resource_table,
  	.n_resources = ARRAY_SIZE(apq8064_rpm_resource_table),

  	.req_ctx_off = 3,
  	.req_sel_off = 11,
  	.ack_ctx_off = 15,
  	.ack_sel_off = 23,

  	.req_sel_size = 4,
  	.ack_sel_size = 7,

  };
  
  static const struct qcom_rpm_resource msm8660_rpm_resource_table[] = {
  	[QCOM_RPM_CXO_CLK] =			{ 32, 12, 5, 1 },
  	[QCOM_RPM_PXO_CLK] =			{ 33, 13, 6, 1 },
  	[QCOM_RPM_PLL_4] =			{ 34, 14, 7, 1 },
  	[QCOM_RPM_APPS_FABRIC_CLK] =		{ 35, 15, 8, 1 },
  	[QCOM_RPM_SYS_FABRIC_CLK] =		{ 36, 16, 9, 1 },
  	[QCOM_RPM_MM_FABRIC_CLK] =		{ 37, 17, 10, 1 },
  	[QCOM_RPM_DAYTONA_FABRIC_CLK] =		{ 38, 18, 11, 1 },
  	[QCOM_RPM_SFPB_CLK] =			{ 39, 19, 12, 1 },
  	[QCOM_RPM_CFPB_CLK] =			{ 40, 20, 13, 1 },
  	[QCOM_RPM_MMFPB_CLK] =			{ 41, 21, 14, 1 },
  	[QCOM_RPM_SMI_CLK] =			{ 42, 22, 15, 1 },
  	[QCOM_RPM_EBI1_CLK] =			{ 43, 23, 16, 1 },
  	[QCOM_RPM_APPS_L2_CACHE_CTL] =		{ 44, 24, 17, 1 },
  	[QCOM_RPM_APPS_FABRIC_HALT] =		{ 45, 25, 18, 2 },
  	[QCOM_RPM_APPS_FABRIC_MODE] =		{ 47, 26, 19, 3 },
  	[QCOM_RPM_APPS_FABRIC_ARB] =		{ 51, 28, 21, 6 },
  	[QCOM_RPM_SYS_FABRIC_HALT] =		{ 63, 29, 22, 2 },
  	[QCOM_RPM_SYS_FABRIC_MODE] =		{ 65, 30, 23, 3 },
  	[QCOM_RPM_SYS_FABRIC_ARB] =		{ 69, 32, 25, 22 },
  	[QCOM_RPM_MM_FABRIC_HALT] =		{ 105, 33, 26, 2 },
  	[QCOM_RPM_MM_FABRIC_MODE] =		{ 107, 34, 27, 3 },
  	[QCOM_RPM_MM_FABRIC_ARB] =		{ 111, 36, 29, 23 },
  	[QCOM_RPM_PM8901_SMPS0] =		{ 134, 37, 30, 2 },
  	[QCOM_RPM_PM8901_SMPS1] =		{ 136, 39, 31, 2 },
  	[QCOM_RPM_PM8901_SMPS2] =		{ 138, 41, 32, 2 },
  	[QCOM_RPM_PM8901_SMPS3] =		{ 140, 43, 33, 2 },
  	[QCOM_RPM_PM8901_SMPS4] =		{ 142, 45, 34, 2 },
  	[QCOM_RPM_PM8901_LDO0] =		{ 144, 47, 35, 2 },
  	[QCOM_RPM_PM8901_LDO1] =		{ 146, 49, 36, 2 },
  	[QCOM_RPM_PM8901_LDO2] =		{ 148, 51, 37, 2 },
  	[QCOM_RPM_PM8901_LDO3] =		{ 150, 53, 38, 2 },
  	[QCOM_RPM_PM8901_LDO4] =		{ 152, 55, 39, 2 },
  	[QCOM_RPM_PM8901_LDO5] =		{ 154, 57, 40, 2 },
  	[QCOM_RPM_PM8901_LDO6] =		{ 156, 59, 41, 2 },
  	[QCOM_RPM_PM8901_LVS0] =		{ 158, 61, 42, 1 },
  	[QCOM_RPM_PM8901_LVS1] =		{ 159, 62, 43, 1 },
  	[QCOM_RPM_PM8901_LVS2] =		{ 160, 63, 44, 1 },
  	[QCOM_RPM_PM8901_LVS3] =		{ 161, 64, 45, 1 },
  	[QCOM_RPM_PM8901_MVS] =			{ 162, 65, 46, 1 },
  	[QCOM_RPM_PM8058_SMPS0] =		{ 163, 66, 47, 2 },
  	[QCOM_RPM_PM8058_SMPS1] =		{ 165, 68, 48, 2 },
  	[QCOM_RPM_PM8058_SMPS2] =		{ 167, 70, 49, 2 },
  	[QCOM_RPM_PM8058_SMPS3] =		{ 169, 72, 50, 2 },
  	[QCOM_RPM_PM8058_SMPS4] =		{ 171, 74, 51, 2 },
  	[QCOM_RPM_PM8058_LDO0] =		{ 173, 76, 52, 2 },
  	[QCOM_RPM_PM8058_LDO1] =		{ 175, 78, 53, 2 },
  	[QCOM_RPM_PM8058_LDO2] =		{ 177, 80, 54, 2 },
  	[QCOM_RPM_PM8058_LDO3] =		{ 179, 82, 55, 2 },
  	[QCOM_RPM_PM8058_LDO4] =		{ 181, 84, 56, 2 },
  	[QCOM_RPM_PM8058_LDO5] =		{ 183, 86, 57, 2 },
  	[QCOM_RPM_PM8058_LDO6] =		{ 185, 88, 58, 2 },
  	[QCOM_RPM_PM8058_LDO7] =		{ 187, 90, 59, 2 },
  	[QCOM_RPM_PM8058_LDO8] =		{ 189, 92, 60, 2 },
  	[QCOM_RPM_PM8058_LDO9] =		{ 191, 94, 61, 2 },
  	[QCOM_RPM_PM8058_LDO10] =		{ 193, 96, 62, 2 },
  	[QCOM_RPM_PM8058_LDO11] =		{ 195, 98, 63, 2 },
  	[QCOM_RPM_PM8058_LDO12] =		{ 197, 100, 64, 2 },
  	[QCOM_RPM_PM8058_LDO13] =		{ 199, 102, 65, 2 },
  	[QCOM_RPM_PM8058_LDO14] =		{ 201, 104, 66, 2 },
  	[QCOM_RPM_PM8058_LDO15] =		{ 203, 106, 67, 2 },
  	[QCOM_RPM_PM8058_LDO16] =		{ 205, 108, 68, 2 },
  	[QCOM_RPM_PM8058_LDO17] =		{ 207, 110, 69, 2 },
  	[QCOM_RPM_PM8058_LDO18] =		{ 209, 112, 70, 2 },
  	[QCOM_RPM_PM8058_LDO19] =		{ 211, 114, 71, 2 },
  	[QCOM_RPM_PM8058_LDO20] =		{ 213, 116, 72, 2 },
  	[QCOM_RPM_PM8058_LDO21] =		{ 215, 118, 73, 2 },
  	[QCOM_RPM_PM8058_LDO22] =		{ 217, 120, 74, 2 },
  	[QCOM_RPM_PM8058_LDO23] =		{ 219, 122, 75, 2 },
  	[QCOM_RPM_PM8058_LDO24] =		{ 221, 124, 76, 2 },
  	[QCOM_RPM_PM8058_LDO25] =		{ 223, 126, 77, 2 },
  	[QCOM_RPM_PM8058_LVS0] =		{ 225, 128, 78, 1 },
  	[QCOM_RPM_PM8058_LVS1] =		{ 226, 129, 79, 1 },
  	[QCOM_RPM_PM8058_NCP] =			{ 227, 130, 80, 2 },
  	[QCOM_RPM_CXO_BUFFERS] =		{ 229, 132, 81, 1 },
  };
  
  static const struct qcom_rpm_data msm8660_template = {
  	.version = 2,
  	.resource_table = msm8660_rpm_resource_table,
  	.n_resources = ARRAY_SIZE(msm8660_rpm_resource_table),

  	.req_ctx_off = 3,
  	.req_sel_off = 11,
  	.ack_ctx_off = 19,
  	.ack_sel_off = 27,

  	.req_sel_size = 7,
  	.ack_sel_size = 7,

  };
  
  static const struct qcom_rpm_resource msm8960_rpm_resource_table[] = {
  	[QCOM_RPM_CXO_CLK] =			{ 25, 9, 5, 1 },
  	[QCOM_RPM_PXO_CLK] =			{ 26, 10, 6, 1 },
  	[QCOM_RPM_APPS_FABRIC_CLK] =		{ 27, 11, 8, 1 },
  	[QCOM_RPM_SYS_FABRIC_CLK] =		{ 28, 12, 9, 1 },
  	[QCOM_RPM_MM_FABRIC_CLK] =		{ 29, 13, 10, 1 },
  	[QCOM_RPM_DAYTONA_FABRIC_CLK] =		{ 30, 14, 11, 1 },
  	[QCOM_RPM_SFPB_CLK] =			{ 31, 15, 12, 1 },
  	[QCOM_RPM_CFPB_CLK] =			{ 32, 16, 13, 1 },
  	[QCOM_RPM_MMFPB_CLK] =			{ 33, 17, 14, 1 },
  	[QCOM_RPM_EBI1_CLK] =			{ 34, 18, 16, 1 },
  	[QCOM_RPM_APPS_FABRIC_HALT] =		{ 35, 19, 18, 1 },
  	[QCOM_RPM_APPS_FABRIC_MODE] =		{ 37, 20, 19, 1 },
  	[QCOM_RPM_APPS_FABRIC_IOCTL] =		{ 40, 21, 20, 1 },
  	[QCOM_RPM_APPS_FABRIC_ARB] =		{ 41, 22, 21, 12 },
  	[QCOM_RPM_SYS_FABRIC_HALT] =		{ 53, 23, 22, 1 },
  	[QCOM_RPM_SYS_FABRIC_MODE] =		{ 55, 24, 23, 1 },
  	[QCOM_RPM_SYS_FABRIC_IOCTL] =		{ 58, 25, 24, 1 },
  	[QCOM_RPM_SYS_FABRIC_ARB] =		{ 59, 26, 25, 29 },
  	[QCOM_RPM_MM_FABRIC_HALT] =		{ 88, 27, 26, 1 },
  	[QCOM_RPM_MM_FABRIC_MODE] =		{ 90, 28, 27, 1 },
  	[QCOM_RPM_MM_FABRIC_IOCTL] =		{ 93, 29, 28, 1 },
  	[QCOM_RPM_MM_FABRIC_ARB] =		{ 94, 30, 29, 23 },
  	[QCOM_RPM_PM8921_SMPS1] =		{ 117, 31, 30, 2 },
  	[QCOM_RPM_PM8921_SMPS2] =		{ 119, 33, 31, 2 },
  	[QCOM_RPM_PM8921_SMPS3] =		{ 121, 35, 32, 2 },
  	[QCOM_RPM_PM8921_SMPS4] =		{ 123, 37, 33, 2 },
  	[QCOM_RPM_PM8921_SMPS5] =		{ 125, 39, 34, 2 },
  	[QCOM_RPM_PM8921_SMPS6] =		{ 127, 41, 35, 2 },
  	[QCOM_RPM_PM8921_SMPS7] =		{ 129, 43, 36, 2 },
  	[QCOM_RPM_PM8921_SMPS8] =		{ 131, 45, 37, 2 },
  	[QCOM_RPM_PM8921_LDO1] =		{ 133, 47, 38, 2 },
  	[QCOM_RPM_PM8921_LDO2] =		{ 135, 49, 39, 2 },
  	[QCOM_RPM_PM8921_LDO3] =		{ 137, 51, 40, 2 },
  	[QCOM_RPM_PM8921_LDO4] =		{ 139, 53, 41, 2 },
  	[QCOM_RPM_PM8921_LDO5] =		{ 141, 55, 42, 2 },
  	[QCOM_RPM_PM8921_LDO6] =		{ 143, 57, 43, 2 },
  	[QCOM_RPM_PM8921_LDO7] =		{ 145, 59, 44, 2 },
  	[QCOM_RPM_PM8921_LDO8] =		{ 147, 61, 45, 2 },
  	[QCOM_RPM_PM8921_LDO9] =		{ 149, 63, 46, 2 },
  	[QCOM_RPM_PM8921_LDO10] =		{ 151, 65, 47, 2 },
  	[QCOM_RPM_PM8921_LDO11] =		{ 153, 67, 48, 2 },
  	[QCOM_RPM_PM8921_LDO12] =		{ 155, 69, 49, 2 },
  	[QCOM_RPM_PM8921_LDO13] =		{ 157, 71, 50, 2 },
  	[QCOM_RPM_PM8921_LDO14] =		{ 159, 73, 51, 2 },
  	[QCOM_RPM_PM8921_LDO15] =		{ 161, 75, 52, 2 },
  	[QCOM_RPM_PM8921_LDO16] =		{ 163, 77, 53, 2 },
  	[QCOM_RPM_PM8921_LDO17] =		{ 165, 79, 54, 2 },
  	[QCOM_RPM_PM8921_LDO18] =		{ 167, 81, 55, 2 },
  	[QCOM_RPM_PM8921_LDO19] =		{ 169, 83, 56, 2 },
  	[QCOM_RPM_PM8921_LDO20] =		{ 171, 85, 57, 2 },
  	[QCOM_RPM_PM8921_LDO21] =		{ 173, 87, 58, 2 },
  	[QCOM_RPM_PM8921_LDO22] =		{ 175, 89, 59, 2 },
  	[QCOM_RPM_PM8921_LDO23] =		{ 177, 91, 60, 2 },
  	[QCOM_RPM_PM8921_LDO24] =		{ 179, 93, 61, 2 },
  	[QCOM_RPM_PM8921_LDO25] =		{ 181, 95, 62, 2 },
  	[QCOM_RPM_PM8921_LDO26] =		{ 183, 97, 63, 2 },
  	[QCOM_RPM_PM8921_LDO27] =		{ 185, 99, 64, 2 },
  	[QCOM_RPM_PM8921_LDO28] =		{ 187, 101, 65, 2 },
  	[QCOM_RPM_PM8921_LDO29] =		{ 189, 103, 66, 2 },
  	[QCOM_RPM_PM8921_CLK1] =		{ 191, 105, 67, 2 },
  	[QCOM_RPM_PM8921_CLK2] =		{ 193, 107, 68, 2 },
  	[QCOM_RPM_PM8921_LVS1] =		{ 195, 109, 69, 1 },
  	[QCOM_RPM_PM8921_LVS2] =		{ 196, 110, 70, 1 },
  	[QCOM_RPM_PM8921_LVS3] =		{ 197, 111, 71, 1 },
  	[QCOM_RPM_PM8921_LVS4] =		{ 198, 112, 72, 1 },
  	[QCOM_RPM_PM8921_LVS5] =		{ 199, 113, 73, 1 },
  	[QCOM_RPM_PM8921_LVS6] =		{ 200, 114, 74, 1 },
  	[QCOM_RPM_PM8921_LVS7] =		{ 201, 115, 75, 1 },
  	[QCOM_RPM_PM8921_NCP] =			{ 202, 116, 80, 2 },
  	[QCOM_RPM_CXO_BUFFERS] =		{ 204, 118, 81, 1 },
  	[QCOM_RPM_USB_OTG_SWITCH] =		{ 205, 119, 82, 1 },
  	[QCOM_RPM_HDMI_SWITCH] =		{ 206, 120, 83, 1 },
  	[QCOM_RPM_DDR_DMM] =			{ 207, 121, 84, 2 },
  };
  
  static const struct qcom_rpm_data msm8960_template = {
  	.version = 3,
  	.resource_table = msm8960_rpm_resource_table,
  	.n_resources = ARRAY_SIZE(msm8960_rpm_resource_table),

  	.req_ctx_off = 3,
  	.req_sel_off = 11,
  	.ack_ctx_off = 15,
  	.ack_sel_off = 23,

  	.req_sel_size = 4,
  	.ack_sel_size = 7,

  };

  static const struct qcom_rpm_resource ipq806x_rpm_resource_table[] = {
  	[QCOM_RPM_CXO_CLK] =			{ 25, 9, 5, 1 },
  	[QCOM_RPM_PXO_CLK] =			{ 26, 10, 6, 1 },
  	[QCOM_RPM_APPS_FABRIC_CLK] =		{ 27, 11, 8, 1 },
  	[QCOM_RPM_SYS_FABRIC_CLK] =		{ 28, 12, 9, 1 },
  	[QCOM_RPM_NSS_FABRIC_0_CLK] =		{ 29, 13, 10, 1 },
  	[QCOM_RPM_DAYTONA_FABRIC_CLK] =		{ 30, 14, 11, 1 },
  	[QCOM_RPM_SFPB_CLK] =			{ 31, 15, 12, 1 },
  	[QCOM_RPM_CFPB_CLK] =			{ 32, 16, 13, 1 },
  	[QCOM_RPM_NSS_FABRIC_1_CLK] =		{ 33, 17, 14, 1 },
  	[QCOM_RPM_EBI1_CLK] =			{ 34, 18, 16, 1 },
  	[QCOM_RPM_APPS_FABRIC_HALT] =		{ 35, 19, 18, 2 },
  	[QCOM_RPM_APPS_FABRIC_MODE] =		{ 37, 20, 19, 3 },
  	[QCOM_RPM_APPS_FABRIC_IOCTL] =		{ 40, 21, 20, 1 },
  	[QCOM_RPM_APPS_FABRIC_ARB] =		{ 41, 22, 21, 12 },
  	[QCOM_RPM_SYS_FABRIC_HALT] =		{ 53, 23, 22, 2 },
  	[QCOM_RPM_SYS_FABRIC_MODE] =		{ 55, 24, 23, 3 },
  	[QCOM_RPM_SYS_FABRIC_IOCTL] =		{ 58, 25, 24, 1 },
  	[QCOM_RPM_SYS_FABRIC_ARB] =		{ 59, 26, 25, 30 },
  	[QCOM_RPM_MM_FABRIC_HALT] =		{ 89, 27, 26, 2 },
  	[QCOM_RPM_MM_FABRIC_MODE] =		{ 91, 28, 27, 3 },
  	[QCOM_RPM_MM_FABRIC_IOCTL] =		{ 94, 29, 28, 1 },
  	[QCOM_RPM_MM_FABRIC_ARB] =		{ 95, 30, 29, 2 },
  	[QCOM_RPM_CXO_BUFFERS] =		{ 209, 33, 31, 1 },
  	[QCOM_RPM_USB_OTG_SWITCH] =		{ 210, 34, 32, 1 },
  	[QCOM_RPM_HDMI_SWITCH] =		{ 211, 35, 33, 1 },
  	[QCOM_RPM_DDR_DMM] =			{ 212, 36, 34, 2 },
  	[QCOM_RPM_VDDMIN_GPIO] =		{ 215, 40, 39, 1 },
  	[QCOM_RPM_SMB208_S1a] =			{ 216, 41, 90, 2 },
  	[QCOM_RPM_SMB208_S1b] =			{ 218, 43, 91, 2 },
  	[QCOM_RPM_SMB208_S2a] =			{ 220, 45, 92, 2 },
  	[QCOM_RPM_SMB208_S2b] =			{ 222, 47, 93, 2 },
  };
  
  static const struct qcom_rpm_data ipq806x_template = {
  	.version = 3,
  	.resource_table = ipq806x_rpm_resource_table,
  	.n_resources = ARRAY_SIZE(ipq806x_rpm_resource_table),

  	.req_ctx_off = 3,
  	.req_sel_off = 11,
  	.ack_ctx_off = 15,
  	.ack_sel_off = 23,

  	.req_sel_size = 4,
  	.ack_sel_size = 7,

  };

  static const struct qcom_rpm_resource mdm9615_rpm_resource_table[] = {
  	[QCOM_RPM_CXO_CLK] =			{ 25, 9, 5, 1 },
  	[QCOM_RPM_SYS_FABRIC_CLK] =		{ 26, 10, 9, 1 },
  	[QCOM_RPM_DAYTONA_FABRIC_CLK] =		{ 27, 11, 11, 1 },
  	[QCOM_RPM_SFPB_CLK] =			{ 28, 12, 12, 1 },
  	[QCOM_RPM_CFPB_CLK] =			{ 29, 13, 13, 1 },
  	[QCOM_RPM_EBI1_CLK] =			{ 30, 14, 16, 1 },
  	[QCOM_RPM_APPS_FABRIC_HALT] =		{ 31, 15, 22, 2 },
  	[QCOM_RPM_APPS_FABRIC_MODE] =		{ 33, 16, 23, 3 },
  	[QCOM_RPM_APPS_FABRIC_IOCTL] =		{ 36, 17, 24, 1 },
  	[QCOM_RPM_APPS_FABRIC_ARB] =		{ 37, 18, 25, 27 },
  	[QCOM_RPM_PM8018_SMPS1] =		{ 64, 19, 30, 2 },
  	[QCOM_RPM_PM8018_SMPS2] =		{ 66, 21, 31, 2 },
  	[QCOM_RPM_PM8018_SMPS3] =		{ 68, 23, 32, 2 },
  	[QCOM_RPM_PM8018_SMPS4] =		{ 70, 25, 33, 2 },
  	[QCOM_RPM_PM8018_SMPS5] =		{ 72, 27, 34, 2 },
  	[QCOM_RPM_PM8018_LDO1] =		{ 74, 29, 35, 2 },
  	[QCOM_RPM_PM8018_LDO2] =		{ 76, 31, 36, 2 },
  	[QCOM_RPM_PM8018_LDO3] =		{ 78, 33, 37, 2 },
  	[QCOM_RPM_PM8018_LDO4] =		{ 80, 35, 38, 2 },
  	[QCOM_RPM_PM8018_LDO5] =		{ 82, 37, 39, 2 },
  	[QCOM_RPM_PM8018_LDO6] =		{ 84, 39, 40, 2 },
  	[QCOM_RPM_PM8018_LDO7] =		{ 86, 41, 41, 2 },
  	[QCOM_RPM_PM8018_LDO8] =		{ 88, 43, 42, 2 },
  	[QCOM_RPM_PM8018_LDO9] =		{ 90, 45, 43, 2 },
  	[QCOM_RPM_PM8018_LDO10] =		{ 92, 47, 44, 2 },
  	[QCOM_RPM_PM8018_LDO11] =		{ 94, 49, 45, 2 },
  	[QCOM_RPM_PM8018_LDO12] =		{ 96, 51, 46, 2 },
  	[QCOM_RPM_PM8018_LDO13] =		{ 98, 53, 47, 2 },
  	[QCOM_RPM_PM8018_LDO14] =		{ 100, 55, 48, 2 },
  	[QCOM_RPM_PM8018_LVS1] =		{ 102, 57, 49, 1 },
  	[QCOM_RPM_PM8018_NCP] =			{ 103, 58, 80, 2 },
  	[QCOM_RPM_CXO_BUFFERS] =		{ 105, 60, 81, 1 },
  	[QCOM_RPM_USB_OTG_SWITCH] =		{ 106, 61, 82, 1 },
  	[QCOM_RPM_HDMI_SWITCH] =		{ 107, 62, 83, 1 },
  	[QCOM_RPM_VOLTAGE_CORNER] =		{ 109, 64, 87, 1 },
  };
  
  static const struct qcom_rpm_data mdm9615_template = {
  	.version = 3,
  	.resource_table = mdm9615_rpm_resource_table,
  	.n_resources = ARRAY_SIZE(mdm9615_rpm_resource_table),
  	.req_ctx_off = 3,
  	.req_sel_off = 11,
  	.ack_ctx_off = 15,
  	.ack_sel_off = 23,
  	.req_sel_size = 4,
  	.ack_sel_size = 7,
  };

  static const struct of_device_id qcom_rpm_of_match[] = {
  	{ .compatible = "qcom,rpm-apq8064", .data = &apq8064_template },
  	{ .compatible = "qcom,rpm-msm8660", .data = &msm8660_template },
  	{ .compatible = "qcom,rpm-msm8960", .data = &msm8960_template },

  	{ .compatible = "qcom,rpm-ipq8064", .data = &ipq806x_template },

  	{ .compatible = "qcom,rpm-mdm9615", .data = &mdm9615_template },

  	{ }
  };
  MODULE_DEVICE_TABLE(of, qcom_rpm_of_match);
  
  int qcom_rpm_write(struct qcom_rpm *rpm,
  		   int state,
  		   int resource,
  		   u32 *buf, size_t count)
  {
  	const struct qcom_rpm_resource *res;
  	const struct qcom_rpm_data *data = rpm->data;

  	u32 sel_mask[RPM_MAX_SEL_SIZE] = { 0 };

  	int left;
  	int ret = 0;
  	int i;
  
  	if (WARN_ON(resource < 0 || resource >= data->n_resources))
  		return -EINVAL;
  
  	res = &data->resource_table[resource];
  	if (WARN_ON(res->size != count))
  		return -EINVAL;
  
  	mutex_lock(&rpm->lock);
  
  	for (i = 0; i < res->size; i++)
  		writel_relaxed(buf[i], RPM_REQ_REG(rpm, res->target_id + i));
  
  	bitmap_set((unsigned long *)sel_mask, res->select_id, 1);

  	for (i = 0; i < rpm->data->req_sel_size; i++) {

  		writel_relaxed(sel_mask[i],

  			       RPM_CTRL_REG(rpm, rpm->data->req_sel_off + i));

  	}

  	writel_relaxed(BIT(state), RPM_CTRL_REG(rpm, rpm->data->req_ctx_off));

  
  	reinit_completion(&rpm->ack);
  	regmap_write(rpm->ipc_regmap, rpm->ipc_offset, BIT(rpm->ipc_bit));
  
  	left = wait_for_completion_timeout(&rpm->ack, RPM_REQUEST_TIMEOUT);
  	if (!left)
  		ret = -ETIMEDOUT;
  	else if (rpm->ack_status & RPM_REJECTED)
  		ret = -EIO;
  
  	mutex_unlock(&rpm->lock);
  
  	return ret;
  }
  EXPORT_SYMBOL(qcom_rpm_write);
  
  static irqreturn_t qcom_rpm_ack_interrupt(int irq, void *dev)
  {
  	struct qcom_rpm *rpm = dev;
  	u32 ack;
  	int i;

  	ack = readl_relaxed(RPM_CTRL_REG(rpm, rpm->data->ack_ctx_off));

  	for (i = 0; i < rpm->data->ack_sel_size; i++)

  		writel_relaxed(0,
  			RPM_CTRL_REG(rpm, rpm->data->ack_sel_off + i));
  	writel(0, RPM_CTRL_REG(rpm, rpm->data->ack_ctx_off));

  
  	if (ack & RPM_NOTIFICATION) {
  		dev_warn(rpm->dev, "ignoring notification!
  ");
  	} else {
  		rpm->ack_status = ack;
  		complete(&rpm->ack);
  	}
  
  	return IRQ_HANDLED;
  }
  
  static irqreturn_t qcom_rpm_err_interrupt(int irq, void *dev)
  {
  	struct qcom_rpm *rpm = dev;
  
  	regmap_write(rpm->ipc_regmap, rpm->ipc_offset, BIT(rpm->ipc_bit));
  	dev_err(rpm->dev, "RPM triggered fatal error
  ");
  
  	return IRQ_HANDLED;
  }
  
  static irqreturn_t qcom_rpm_wakeup_interrupt(int irq, void *dev)
  {
  	return IRQ_HANDLED;
  }
  
  static int qcom_rpm_probe(struct platform_device *pdev)
  {
  	const struct of_device_id *match;
  	struct device_node *syscon_np;
  	struct resource *res;
  	struct qcom_rpm *rpm;
  	u32 fw_version[3];
  	int irq_wakeup;
  	int irq_ack;
  	int irq_err;
  	int ret;
  
  	rpm = devm_kzalloc(&pdev->dev, sizeof(*rpm), GFP_KERNEL);
  	if (!rpm)
  		return -ENOMEM;
  
  	rpm->dev = &pdev->dev;
  	mutex_init(&rpm->lock);
  	init_completion(&rpm->ack);

  	/* Enable message RAM clock */
  	rpm->ramclk = devm_clk_get(&pdev->dev, "ram");
  	if (IS_ERR(rpm->ramclk)) {
  		ret = PTR_ERR(rpm->ramclk);
  		if (ret == -EPROBE_DEFER)
  			return ret;
  		/*
  		 * Fall through in all other cases, as the clock is
  		 * optional. (Does not exist on all platforms.)
  		 */
  		rpm->ramclk = NULL;
  	}
  	clk_prepare_enable(rpm->ramclk); /* Accepts NULL */

  	irq_ack = platform_get_irq_byname(pdev, "ack");

  	if (irq_ack < 0)

  		return irq_ack;

  
  	irq_err = platform_get_irq_byname(pdev, "err");

  	if (irq_err < 0)

  		return irq_err;

  
  	irq_wakeup = platform_get_irq_byname(pdev, "wakeup");

  	if (irq_wakeup < 0)

  		return irq_wakeup;

  
  	match = of_match_device(qcom_rpm_of_match, &pdev->dev);

  	if (!match)
  		return -ENODEV;

  	rpm->data = match->data;
  
  	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
  	rpm->status_regs = devm_ioremap_resource(&pdev->dev, res);
  	if (IS_ERR(rpm->status_regs))
  		return PTR_ERR(rpm->status_regs);
  	rpm->ctrl_regs = rpm->status_regs + 0x400;
  	rpm->req_regs = rpm->status_regs + 0x600;
  
  	syscon_np = of_parse_phandle(pdev->dev.of_node, "qcom,ipc", 0);
  	if (!syscon_np) {
  		dev_err(&pdev->dev, "no qcom,ipc node
  ");
  		return -ENODEV;
  	}
  
  	rpm->ipc_regmap = syscon_node_to_regmap(syscon_np);

  	of_node_put(syscon_np);

  	if (IS_ERR(rpm->ipc_regmap))
  		return PTR_ERR(rpm->ipc_regmap);
  
  	ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,ipc", 1,
  					 &rpm->ipc_offset);
  	if (ret < 0) {
  		dev_err(&pdev->dev, "no offset in qcom,ipc
  ");
  		return -EINVAL;
  	}
  
  	ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,ipc", 2,
  					 &rpm->ipc_bit);
  	if (ret < 0) {
  		dev_err(&pdev->dev, "no bit in qcom,ipc
  ");
  		return -EINVAL;
  	}
  
  	dev_set_drvdata(&pdev->dev, rpm);
  
  	fw_version[0] = readl(RPM_STATUS_REG(rpm, 0));
  	fw_version[1] = readl(RPM_STATUS_REG(rpm, 1));
  	fw_version[2] = readl(RPM_STATUS_REG(rpm, 2));
  	if (fw_version[0] != rpm->data->version) {
  		dev_err(&pdev->dev,
  			"RPM version %u.%u.%u incompatible with driver version %u",
  			fw_version[0],
  			fw_version[1],
  			fw_version[2],
  			rpm->data->version);
  		return -EFAULT;
  	}

  	writel(fw_version[0], RPM_CTRL_REG(rpm, 0));
  	writel(fw_version[1], RPM_CTRL_REG(rpm, 1));
  	writel(fw_version[2], RPM_CTRL_REG(rpm, 2));

  	dev_info(&pdev->dev, "RPM firmware %u.%u.%u
  ", fw_version[0],
  							fw_version[1],
  							fw_version[2]);
  
  	ret = devm_request_irq(&pdev->dev,
  			       irq_ack,
  			       qcom_rpm_ack_interrupt,

  			       IRQF_TRIGGER_RISING,

  			       "qcom_rpm_ack",
  			       rpm);
  	if (ret) {
  		dev_err(&pdev->dev, "failed to request ack interrupt
  ");
  		return ret;
  	}
  
  	ret = irq_set_irq_wake(irq_ack, 1);
  	if (ret)
  		dev_warn(&pdev->dev, "failed to mark ack irq as wakeup
  ");
  
  	ret = devm_request_irq(&pdev->dev,
  			       irq_err,
  			       qcom_rpm_err_interrupt,
  			       IRQF_TRIGGER_RISING,
  			       "qcom_rpm_err",
  			       rpm);
  	if (ret) {
  		dev_err(&pdev->dev, "failed to request err interrupt
  ");
  		return ret;
  	}
  
  	ret = devm_request_irq(&pdev->dev,
  			       irq_wakeup,
  			       qcom_rpm_wakeup_interrupt,
  			       IRQF_TRIGGER_RISING,
  			       "qcom_rpm_wakeup",
  			       rpm);
  	if (ret) {
  		dev_err(&pdev->dev, "failed to request wakeup interrupt
  ");
  		return ret;
  	}
  
  	ret = irq_set_irq_wake(irq_wakeup, 1);
  	if (ret)
  		dev_warn(&pdev->dev, "failed to mark wakeup irq as wakeup
  ");
  
  	return of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
  }
  
  static int qcom_rpm_remove(struct platform_device *pdev)
  {

  	struct qcom_rpm *rpm = dev_get_drvdata(&pdev->dev);

  	of_platform_depopulate(&pdev->dev);

  	clk_disable_unprepare(rpm->ramclk);

  	return 0;
  }
  
  static struct platform_driver qcom_rpm_driver = {
  	.probe = qcom_rpm_probe,
  	.remove = qcom_rpm_remove,
  	.driver  = {
  		.name  = "qcom_rpm",
  		.of_match_table = qcom_rpm_of_match,
  	},
  };
  
  static int __init qcom_rpm_init(void)
  {
  	return platform_driver_register(&qcom_rpm_driver);
  }
  arch_initcall(qcom_rpm_init);
  
  static void __exit qcom_rpm_exit(void)
  {
  	platform_driver_unregister(&qcom_rpm_driver);
  }
  module_exit(qcom_rpm_exit)
  
  MODULE_DESCRIPTION("Qualcomm Resource Power Manager driver");
  MODULE_LICENSE("GPL v2");
  MODULE_AUTHOR("Bjorn Andersson <bjorn.andersson@sonymobile.com>");