Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1 | /* |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 2 | * Copyright (c) 2012-2016, The Linux Foundation. All rights reserved. |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 and |
| 6 | * only version 2 as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | */ |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 13 | #include <linux/bitmap.h> |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 14 | #include <linux/delay.h> |
| 15 | #include <linux/err.h> |
| 16 | #include <linux/interrupt.h> |
| 17 | #include <linux/io.h> |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 18 | #include <linux/irqchip/chained_irq.h> |
| 19 | #include <linux/irqdomain.h> |
| 20 | #include <linux/irq.h> |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 21 | #include <linux/kernel.h> |
| 22 | #include <linux/module.h> |
| 23 | #include <linux/of.h> |
| 24 | #include <linux/platform_device.h> |
| 25 | #include <linux/slab.h> |
| 26 | #include <linux/spmi.h> |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame^] | 27 | #include <linux/syscore_ops.h> |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 28 | |
| 29 | /* PMIC Arbiter configuration registers */ |
| 30 | #define PMIC_ARB_VERSION 0x0000 |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 31 | #define PMIC_ARB_VERSION_V2_MIN 0x20010000 |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 32 | #define PMIC_ARB_VERSION_V3_MIN 0x30000000 |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 33 | #define PMIC_ARB_INT_EN 0x0004 |
| 34 | |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 35 | /* PMIC Arbiter channel registers offsets */ |
| 36 | #define PMIC_ARB_CMD 0x00 |
| 37 | #define PMIC_ARB_CONFIG 0x04 |
| 38 | #define PMIC_ARB_STATUS 0x08 |
| 39 | #define PMIC_ARB_WDATA0 0x10 |
| 40 | #define PMIC_ARB_WDATA1 0x14 |
| 41 | #define PMIC_ARB_RDATA0 0x18 |
| 42 | #define PMIC_ARB_RDATA1 0x1C |
| 43 | #define PMIC_ARB_REG_CHNL(N) (0x800 + 0x4 * (N)) |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 44 | |
| 45 | /* Mapping Table */ |
| 46 | #define SPMI_MAPPING_TABLE_REG(N) (0x0B00 + (4 * (N))) |
| 47 | #define SPMI_MAPPING_BIT_INDEX(X) (((X) >> 18) & 0xF) |
| 48 | #define SPMI_MAPPING_BIT_IS_0_FLAG(X) (((X) >> 17) & 0x1) |
| 49 | #define SPMI_MAPPING_BIT_IS_0_RESULT(X) (((X) >> 9) & 0xFF) |
| 50 | #define SPMI_MAPPING_BIT_IS_1_FLAG(X) (((X) >> 8) & 0x1) |
| 51 | #define SPMI_MAPPING_BIT_IS_1_RESULT(X) (((X) >> 0) & 0xFF) |
| 52 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 53 | #define SPMI_MAPPING_TABLE_TREE_DEPTH 16 /* Maximum of 16-bits */ |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 54 | #define PMIC_ARB_MAX_PPID BIT(12) /* PPID is 12bit */ |
| 55 | #define PMIC_ARB_CHAN_VALID BIT(15) |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 56 | |
| 57 | /* Ownership Table */ |
| 58 | #define SPMI_OWNERSHIP_TABLE_REG(N) (0x0700 + (4 * (N))) |
| 59 | #define SPMI_OWNERSHIP_PERIPH2OWNER(X) ((X) & 0x7) |
| 60 | |
| 61 | /* Channel Status fields */ |
| 62 | enum pmic_arb_chnl_status { |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 63 | PMIC_ARB_STATUS_DONE = BIT(0), |
| 64 | PMIC_ARB_STATUS_FAILURE = BIT(1), |
| 65 | PMIC_ARB_STATUS_DENIED = BIT(2), |
| 66 | PMIC_ARB_STATUS_DROPPED = BIT(3), |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 67 | }; |
| 68 | |
| 69 | /* Command register fields */ |
| 70 | #define PMIC_ARB_CMD_MAX_BYTE_COUNT 8 |
| 71 | |
| 72 | /* Command Opcodes */ |
| 73 | enum pmic_arb_cmd_op_code { |
| 74 | PMIC_ARB_OP_EXT_WRITEL = 0, |
| 75 | PMIC_ARB_OP_EXT_READL = 1, |
| 76 | PMIC_ARB_OP_EXT_WRITE = 2, |
| 77 | PMIC_ARB_OP_RESET = 3, |
| 78 | PMIC_ARB_OP_SLEEP = 4, |
| 79 | PMIC_ARB_OP_SHUTDOWN = 5, |
| 80 | PMIC_ARB_OP_WAKEUP = 6, |
| 81 | PMIC_ARB_OP_AUTHENTICATE = 7, |
| 82 | PMIC_ARB_OP_MSTR_READ = 8, |
| 83 | PMIC_ARB_OP_MSTR_WRITE = 9, |
| 84 | PMIC_ARB_OP_EXT_READ = 13, |
| 85 | PMIC_ARB_OP_WRITE = 14, |
| 86 | PMIC_ARB_OP_READ = 15, |
| 87 | PMIC_ARB_OP_ZERO_WRITE = 16, |
| 88 | }; |
| 89 | |
| 90 | /* Maximum number of support PMIC peripherals */ |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 91 | #define PMIC_ARB_MAX_PERIPHS 512 |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 92 | #define PMIC_ARB_TIMEOUT_US 100 |
| 93 | #define PMIC_ARB_MAX_TRANS_BYTES (8) |
| 94 | |
| 95 | #define PMIC_ARB_APID_MASK 0xFF |
| 96 | #define PMIC_ARB_PPID_MASK 0xFFF |
| 97 | |
| 98 | /* interrupt enable bit */ |
| 99 | #define SPMI_PIC_ACC_ENABLE_BIT BIT(0) |
| 100 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 101 | #define HWIRQ(slave_id, periph_id, irq_id, apid) \ |
| 102 | ((((slave_id) & 0xF) << 28) | \ |
| 103 | (((periph_id) & 0xFF) << 20) | \ |
| 104 | (((irq_id) & 0x7) << 16) | \ |
| 105 | (((apid) & 0x1FF) << 0)) |
| 106 | |
| 107 | #define HWIRQ_SID(hwirq) (((hwirq) >> 28) & 0xF) |
| 108 | #define HWIRQ_PER(hwirq) (((hwirq) >> 20) & 0xFF) |
| 109 | #define HWIRQ_IRQ(hwirq) (((hwirq) >> 16) & 0x7) |
| 110 | #define HWIRQ_APID(hwirq) (((hwirq) >> 0) & 0x1FF) |
| 111 | |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 112 | struct pmic_arb_ver_ops; |
| 113 | |
Abhijeet Dharmapurikar | 8f8ec81 | 2016-01-08 12:54:36 -0800 | [diff] [blame] | 114 | struct apid_data { |
| 115 | u16 ppid; |
| 116 | u8 owner; |
Abhijeet Dharmapurikar | 8f8ec81 | 2016-01-08 12:54:36 -0800 | [diff] [blame] | 117 | }; |
| 118 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 119 | /** |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 120 | * spmi_pmic_arb - SPMI PMIC Arbiter object |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 121 | * |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 122 | * @rd_base: on v1 "core", on v2 "observer" register base off DT. |
| 123 | * @wr_base: on v1 "core", on v2 "chnls" register base off DT. |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 124 | * @intr: address of the SPMI interrupt control registers. |
| 125 | * @cnfg: address of the PMIC Arbiter configuration registers. |
| 126 | * @lock: lock to synchronize accesses. |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 127 | * @channel: execution environment channel to use for accesses. |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 128 | * @irq: PMIC ARB interrupt. |
| 129 | * @ee: the current Execution Environment |
| 130 | * @min_apid: minimum APID (used for bounding IRQ search) |
| 131 | * @max_apid: maximum APID |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 132 | * @max_periph: maximum number of PMIC peripherals supported by HW. |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 133 | * @mapping_table: in-memory copy of PPID -> APID mapping table. |
| 134 | * @domain: irq domain object for PMIC IRQ domain |
| 135 | * @spmic: SPMI controller object |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 136 | * @ver_ops: version dependent operations. |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 137 | * @ppid_to_apid in-memory copy of PPID -> channel (APID) mapping table. |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 138 | * v2 only. |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 139 | */ |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 140 | struct spmi_pmic_arb { |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 141 | void __iomem *rd_base; |
| 142 | void __iomem *wr_base; |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 143 | void __iomem *intr; |
| 144 | void __iomem *cnfg; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 145 | void __iomem *core; |
| 146 | resource_size_t core_size; |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 147 | raw_spinlock_t lock; |
| 148 | u8 channel; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 149 | int irq; |
| 150 | u8 ee; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 151 | u16 min_apid; |
| 152 | u16 max_apid; |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 153 | u16 max_periph; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 154 | u32 *mapping_table; |
| 155 | DECLARE_BITMAP(mapping_table_valid, PMIC_ARB_MAX_PERIPHS); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 156 | struct irq_domain *domain; |
| 157 | struct spmi_controller *spmic; |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 158 | const struct pmic_arb_ver_ops *ver_ops; |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 159 | u16 *ppid_to_apid; |
| 160 | u16 last_apid; |
Abhijeet Dharmapurikar | 8f8ec81 | 2016-01-08 12:54:36 -0800 | [diff] [blame] | 161 | struct apid_data apid_data[PMIC_ARB_MAX_PERIPHS]; |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 162 | }; |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame^] | 163 | static struct spmi_pmic_arb *the_pa; |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 164 | |
| 165 | /** |
| 166 | * pmic_arb_ver: version dependent functionality. |
| 167 | * |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 168 | * @ver_str: version string. |
| 169 | * @ppid_to_apid: finds the apid for a given ppid. |
| 170 | * @mode: access rights to specified pmic peripheral. |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 171 | * @non_data_cmd: on v1 issues an spmi non-data command. |
| 172 | * on v2 no HW support, returns -EOPNOTSUPP. |
| 173 | * @offset: on v1 offset of per-ee channel. |
| 174 | * on v2 offset of per-ee and per-ppid channel. |
| 175 | * @fmt_cmd: formats a GENI/SPMI command. |
| 176 | * @owner_acc_status: on v1 offset of PMIC_ARB_SPMI_PIC_OWNERm_ACC_STATUSn |
| 177 | * on v2 offset of SPMI_PIC_OWNERm_ACC_STATUSn. |
| 178 | * @acc_enable: on v1 offset of PMIC_ARB_SPMI_PIC_ACC_ENABLEn |
| 179 | * on v2 offset of SPMI_PIC_ACC_ENABLEn. |
| 180 | * @irq_status: on v1 offset of PMIC_ARB_SPMI_PIC_IRQ_STATUSn |
| 181 | * on v2 offset of SPMI_PIC_IRQ_STATUSn. |
| 182 | * @irq_clear: on v1 offset of PMIC_ARB_SPMI_PIC_IRQ_CLEARn |
| 183 | * on v2 offset of SPMI_PIC_IRQ_CLEARn. |
| 184 | */ |
| 185 | struct pmic_arb_ver_ops { |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 186 | const char *ver_str; |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 187 | int (*ppid_to_apid)(struct spmi_pmic_arb *pa, u8 sid, u16 addr, |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 188 | u16 *apid); |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 189 | int (*mode)(struct spmi_pmic_arb *dev, u8 sid, u16 addr, |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 190 | mode_t *mode); |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 191 | /* spmi commands (read_cmd, write_cmd, cmd) functionality */ |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 192 | int (*offset)(struct spmi_pmic_arb *dev, u8 sid, u16 addr, |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 193 | u32 *offset); |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 194 | u32 (*fmt_cmd)(u8 opc, u8 sid, u16 addr, u8 bc); |
| 195 | int (*non_data_cmd)(struct spmi_controller *ctrl, u8 opc, u8 sid); |
| 196 | /* Interrupts controller functionality (offset of PIC registers) */ |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 197 | u32 (*owner_acc_status)(u8 m, u16 n); |
| 198 | u32 (*acc_enable)(u16 n); |
| 199 | u32 (*irq_status)(u16 n); |
| 200 | u32 (*irq_clear)(u16 n); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 201 | }; |
| 202 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 203 | static inline void pmic_arb_base_write(struct spmi_pmic_arb *pa, |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 204 | u32 offset, u32 val) |
| 205 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 206 | writel_relaxed(val, pa->wr_base + offset); |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 207 | } |
| 208 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 209 | static inline void pmic_arb_set_rd_cmd(struct spmi_pmic_arb *pa, |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 210 | u32 offset, u32 val) |
| 211 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 212 | writel_relaxed(val, pa->rd_base + offset); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 213 | } |
| 214 | |
| 215 | /** |
| 216 | * pa_read_data: reads pmic-arb's register and copy 1..4 bytes to buf |
| 217 | * @bc: byte count -1. range: 0..3 |
| 218 | * @reg: register's address |
| 219 | * @buf: output parameter, length must be bc + 1 |
| 220 | */ |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 221 | static void pa_read_data(struct spmi_pmic_arb *pa, u8 *buf, u32 reg, u8 bc) |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 222 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 223 | u32 data = __raw_readl(pa->rd_base + reg); |
| 224 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 225 | memcpy(buf, &data, (bc & 3) + 1); |
| 226 | } |
| 227 | |
| 228 | /** |
| 229 | * pa_write_data: write 1..4 bytes from buf to pmic-arb's register |
| 230 | * @bc: byte-count -1. range: 0..3. |
| 231 | * @reg: register's address. |
| 232 | * @buf: buffer to write. length must be bc + 1. |
| 233 | */ |
| 234 | static void |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 235 | pa_write_data(struct spmi_pmic_arb *pa, const u8 *buf, u32 reg, u8 bc) |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 236 | { |
| 237 | u32 data = 0; |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 238 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 239 | memcpy(&data, buf, (bc & 3) + 1); |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 240 | pmic_arb_base_write(pa, reg, data); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 241 | } |
| 242 | |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 243 | static int pmic_arb_wait_for_done(struct spmi_controller *ctrl, |
| 244 | void __iomem *base, u8 sid, u16 addr) |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 245 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 246 | struct spmi_pmic_arb *pa = spmi_controller_get_drvdata(ctrl); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 247 | u32 status = 0; |
| 248 | u32 timeout = PMIC_ARB_TIMEOUT_US; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 249 | u32 offset; |
| 250 | int rc; |
| 251 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 252 | rc = pa->ver_ops->offset(pa, sid, addr, &offset); |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 253 | if (rc) |
| 254 | return rc; |
| 255 | |
| 256 | offset += PMIC_ARB_STATUS; |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 257 | |
| 258 | while (timeout--) { |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 259 | status = readl_relaxed(base + offset); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 260 | |
| 261 | if (status & PMIC_ARB_STATUS_DONE) { |
| 262 | if (status & PMIC_ARB_STATUS_DENIED) { |
| 263 | dev_err(&ctrl->dev, |
| 264 | "%s: transaction denied (0x%x)\n", |
| 265 | __func__, status); |
| 266 | return -EPERM; |
| 267 | } |
| 268 | |
| 269 | if (status & PMIC_ARB_STATUS_FAILURE) { |
| 270 | dev_err(&ctrl->dev, |
| 271 | "%s: transaction failed (0x%x)\n", |
| 272 | __func__, status); |
| 273 | return -EIO; |
| 274 | } |
| 275 | |
| 276 | if (status & PMIC_ARB_STATUS_DROPPED) { |
| 277 | dev_err(&ctrl->dev, |
| 278 | "%s: transaction dropped (0x%x)\n", |
| 279 | __func__, status); |
| 280 | return -EIO; |
| 281 | } |
| 282 | |
| 283 | return 0; |
| 284 | } |
| 285 | udelay(1); |
| 286 | } |
| 287 | |
| 288 | dev_err(&ctrl->dev, |
| 289 | "%s: timeout, status 0x%x\n", |
| 290 | __func__, status); |
| 291 | return -ETIMEDOUT; |
| 292 | } |
| 293 | |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 294 | static int |
| 295 | pmic_arb_non_data_cmd_v1(struct spmi_controller *ctrl, u8 opc, u8 sid) |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 296 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 297 | struct spmi_pmic_arb *pa = spmi_controller_get_drvdata(ctrl); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 298 | unsigned long flags; |
| 299 | u32 cmd; |
| 300 | int rc; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 301 | u32 offset; |
| 302 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 303 | rc = pa->ver_ops->offset(pa, sid, 0, &offset); |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 304 | if (rc) |
| 305 | return rc; |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 306 | |
| 307 | cmd = ((opc | 0x40) << 27) | ((sid & 0xf) << 20); |
| 308 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 309 | raw_spin_lock_irqsave(&pa->lock, flags); |
| 310 | pmic_arb_base_write(pa, offset + PMIC_ARB_CMD, cmd); |
| 311 | rc = pmic_arb_wait_for_done(ctrl, pa->wr_base, sid, 0); |
| 312 | raw_spin_unlock_irqrestore(&pa->lock, flags); |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 313 | |
| 314 | return rc; |
| 315 | } |
| 316 | |
| 317 | static int |
| 318 | pmic_arb_non_data_cmd_v2(struct spmi_controller *ctrl, u8 opc, u8 sid) |
| 319 | { |
| 320 | return -EOPNOTSUPP; |
| 321 | } |
| 322 | |
| 323 | /* Non-data command */ |
| 324 | static int pmic_arb_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid) |
| 325 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 326 | struct spmi_pmic_arb *pa = spmi_controller_get_drvdata(ctrl); |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 327 | |
| 328 | dev_dbg(&ctrl->dev, "cmd op:0x%x sid:%d\n", opc, sid); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 329 | |
| 330 | /* Check for valid non-data command */ |
| 331 | if (opc < SPMI_CMD_RESET || opc > SPMI_CMD_WAKEUP) |
| 332 | return -EINVAL; |
| 333 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 334 | return pa->ver_ops->non_data_cmd(ctrl, opc, sid); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 335 | } |
| 336 | |
| 337 | static int pmic_arb_read_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid, |
| 338 | u16 addr, u8 *buf, size_t len) |
| 339 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 340 | struct spmi_pmic_arb *pa = spmi_controller_get_drvdata(ctrl); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 341 | unsigned long flags; |
| 342 | u8 bc = len - 1; |
| 343 | u32 cmd; |
| 344 | int rc; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 345 | u32 offset; |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 346 | mode_t mode; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 347 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 348 | rc = pa->ver_ops->offset(pa, sid, addr, &offset); |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 349 | if (rc) |
| 350 | return rc; |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 351 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 352 | rc = pa->ver_ops->mode(pa, sid, addr, &mode); |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 353 | if (rc) |
| 354 | return rc; |
| 355 | |
| 356 | if (!(mode & 0400)) { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 357 | dev_err(&pa->spmic->dev, |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 358 | "error: impermissible read from peripheral sid:%d addr:0x%x\n", |
| 359 | sid, addr); |
| 360 | return -ENODEV; |
| 361 | } |
| 362 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 363 | if (bc >= PMIC_ARB_MAX_TRANS_BYTES) { |
| 364 | dev_err(&ctrl->dev, |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 365 | "pmic-arb supports 1..%d bytes per trans, but:%zu requested", |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 366 | PMIC_ARB_MAX_TRANS_BYTES, len); |
| 367 | return -EINVAL; |
| 368 | } |
| 369 | |
| 370 | /* Check the opcode */ |
| 371 | if (opc >= 0x60 && opc <= 0x7F) |
| 372 | opc = PMIC_ARB_OP_READ; |
| 373 | else if (opc >= 0x20 && opc <= 0x2F) |
| 374 | opc = PMIC_ARB_OP_EXT_READ; |
| 375 | else if (opc >= 0x38 && opc <= 0x3F) |
| 376 | opc = PMIC_ARB_OP_EXT_READL; |
| 377 | else |
| 378 | return -EINVAL; |
| 379 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 380 | cmd = pa->ver_ops->fmt_cmd(opc, sid, addr, bc); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 381 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 382 | raw_spin_lock_irqsave(&pa->lock, flags); |
| 383 | pmic_arb_set_rd_cmd(pa, offset + PMIC_ARB_CMD, cmd); |
| 384 | rc = pmic_arb_wait_for_done(ctrl, pa->rd_base, sid, addr); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 385 | if (rc) |
| 386 | goto done; |
| 387 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 388 | pa_read_data(pa, buf, offset + PMIC_ARB_RDATA0, |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 389 | min_t(u8, bc, 3)); |
| 390 | |
| 391 | if (bc > 3) |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 392 | pa_read_data(pa, buf + 4, offset + PMIC_ARB_RDATA1, bc - 4); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 393 | |
| 394 | done: |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 395 | raw_spin_unlock_irqrestore(&pa->lock, flags); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 396 | return rc; |
| 397 | } |
| 398 | |
| 399 | static int pmic_arb_write_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid, |
| 400 | u16 addr, const u8 *buf, size_t len) |
| 401 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 402 | struct spmi_pmic_arb *pa = spmi_controller_get_drvdata(ctrl); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 403 | unsigned long flags; |
| 404 | u8 bc = len - 1; |
| 405 | u32 cmd; |
| 406 | int rc; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 407 | u32 offset; |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 408 | mode_t mode; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 409 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 410 | rc = pa->ver_ops->offset(pa, sid, addr, &offset); |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 411 | if (rc) |
| 412 | return rc; |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 413 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 414 | rc = pa->ver_ops->mode(pa, sid, addr, &mode); |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 415 | if (rc) |
| 416 | return rc; |
| 417 | |
| 418 | if (!(mode & 0200)) { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 419 | dev_err(&pa->spmic->dev, |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 420 | "error: impermissible write to peripheral sid:%d addr:0x%x\n", |
| 421 | sid, addr); |
| 422 | return -ENODEV; |
| 423 | } |
| 424 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 425 | if (bc >= PMIC_ARB_MAX_TRANS_BYTES) { |
| 426 | dev_err(&ctrl->dev, |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 427 | "pmic-arb supports 1..%d bytes per trans, but:%zu requested", |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 428 | PMIC_ARB_MAX_TRANS_BYTES, len); |
| 429 | return -EINVAL; |
| 430 | } |
| 431 | |
| 432 | /* Check the opcode */ |
| 433 | if (opc >= 0x40 && opc <= 0x5F) |
| 434 | opc = PMIC_ARB_OP_WRITE; |
| 435 | else if (opc >= 0x00 && opc <= 0x0F) |
| 436 | opc = PMIC_ARB_OP_EXT_WRITE; |
| 437 | else if (opc >= 0x30 && opc <= 0x37) |
| 438 | opc = PMIC_ARB_OP_EXT_WRITEL; |
Stephen Boyd | 9b76968 | 2015-08-28 12:31:10 -0700 | [diff] [blame] | 439 | else if (opc >= 0x80) |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 440 | opc = PMIC_ARB_OP_ZERO_WRITE; |
| 441 | else |
| 442 | return -EINVAL; |
| 443 | |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 444 | cmd = pa->ver_ops->fmt_cmd(opc, sid, addr, bc); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 445 | |
| 446 | /* Write data to FIFOs */ |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 447 | raw_spin_lock_irqsave(&pa->lock, flags); |
| 448 | pa_write_data(pa, buf, offset + PMIC_ARB_WDATA0, min_t(u8, bc, 3)); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 449 | if (bc > 3) |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 450 | pa_write_data(pa, buf + 4, offset + PMIC_ARB_WDATA1, bc - 4); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 451 | |
| 452 | /* Start the transaction */ |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 453 | pmic_arb_base_write(pa, offset + PMIC_ARB_CMD, cmd); |
| 454 | rc = pmic_arb_wait_for_done(ctrl, pa->wr_base, sid, addr); |
| 455 | raw_spin_unlock_irqrestore(&pa->lock, flags); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 456 | |
| 457 | return rc; |
| 458 | } |
| 459 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 460 | enum qpnpint_regs { |
| 461 | QPNPINT_REG_RT_STS = 0x10, |
| 462 | QPNPINT_REG_SET_TYPE = 0x11, |
| 463 | QPNPINT_REG_POLARITY_HIGH = 0x12, |
| 464 | QPNPINT_REG_POLARITY_LOW = 0x13, |
| 465 | QPNPINT_REG_LATCHED_CLR = 0x14, |
| 466 | QPNPINT_REG_EN_SET = 0x15, |
| 467 | QPNPINT_REG_EN_CLR = 0x16, |
| 468 | QPNPINT_REG_LATCHED_STS = 0x18, |
| 469 | }; |
| 470 | |
| 471 | struct spmi_pmic_arb_qpnpint_type { |
| 472 | u8 type; /* 1 -> edge */ |
| 473 | u8 polarity_high; |
| 474 | u8 polarity_low; |
| 475 | } __packed; |
| 476 | |
| 477 | /* Simplified accessor functions for irqchip callbacks */ |
| 478 | static void qpnpint_spmi_write(struct irq_data *d, u8 reg, void *buf, |
| 479 | size_t len) |
| 480 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 481 | struct spmi_pmic_arb *pa = irq_data_get_irq_chip_data(d); |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 482 | u8 sid = HWIRQ_SID(d->hwirq); |
| 483 | u8 per = HWIRQ_PER(d->hwirq); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 484 | |
| 485 | if (pmic_arb_write_cmd(pa->spmic, SPMI_CMD_EXT_WRITEL, sid, |
| 486 | (per << 8) + reg, buf, len)) |
| 487 | dev_err_ratelimited(&pa->spmic->dev, |
| 488 | "failed irqchip transaction on %x\n", |
| 489 | d->irq); |
| 490 | } |
| 491 | |
| 492 | static void qpnpint_spmi_read(struct irq_data *d, u8 reg, void *buf, size_t len) |
| 493 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 494 | struct spmi_pmic_arb *pa = irq_data_get_irq_chip_data(d); |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 495 | u8 sid = HWIRQ_SID(d->hwirq); |
| 496 | u8 per = HWIRQ_PER(d->hwirq); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 497 | |
| 498 | if (pmic_arb_read_cmd(pa->spmic, SPMI_CMD_EXT_READL, sid, |
| 499 | (per << 8) + reg, buf, len)) |
| 500 | dev_err_ratelimited(&pa->spmic->dev, |
| 501 | "failed irqchip transaction on %x\n", |
| 502 | d->irq); |
| 503 | } |
| 504 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 505 | static void cleanup_irq(struct spmi_pmic_arb *pa, u16 apid, int id) |
Abhijeet Dharmapurikar | b9b8744 | 2016-01-08 10:50:19 -0800 | [diff] [blame] | 506 | { |
Abhijeet Dharmapurikar | b9b8744 | 2016-01-08 10:50:19 -0800 | [diff] [blame] | 507 | u16 ppid = pa->apid_data[apid].ppid; |
| 508 | u8 sid = ppid >> 8; |
| 509 | u8 per = ppid & 0xFF; |
Abhijeet Dharmapurikar | b9b8744 | 2016-01-08 10:50:19 -0800 | [diff] [blame] | 510 | u8 irq_mask = BIT(id); |
| 511 | |
Abhijeet Dharmapurikar | ed44ac1 | 2016-04-26 18:31:39 -0700 | [diff] [blame] | 512 | dev_err_ratelimited(&pa->spmic->dev, |
| 513 | "cleanup_irq apid=%d sid=0x%x per=0x%x irq=%d\n", |
| 514 | apid, sid, per, id); |
Abhijeet Dharmapurikar | b9b8744 | 2016-01-08 10:50:19 -0800 | [diff] [blame] | 515 | writel_relaxed(irq_mask, pa->intr + pa->ver_ops->irq_clear(apid)); |
Abhijeet Dharmapurikar | c27d863 | 2016-02-23 15:56:23 -0800 | [diff] [blame] | 516 | |
Abhijeet Dharmapurikar | b9b8744 | 2016-01-08 10:50:19 -0800 | [diff] [blame] | 517 | if (pmic_arb_write_cmd(pa->spmic, SPMI_CMD_EXT_WRITEL, sid, |
| 518 | (per << 8) + QPNPINT_REG_LATCHED_CLR, &irq_mask, 1)) |
| 519 | dev_err_ratelimited(&pa->spmic->dev, |
| 520 | "failed to ack irq_mask = 0x%x for ppid = %x\n", |
| 521 | irq_mask, ppid); |
| 522 | |
| 523 | if (pmic_arb_write_cmd(pa->spmic, SPMI_CMD_EXT_WRITEL, sid, |
| 524 | (per << 8) + QPNPINT_REG_EN_CLR, &irq_mask, 1)) |
| 525 | dev_err_ratelimited(&pa->spmic->dev, |
| 526 | "failed to ack irq_mask = 0x%x for ppid = %x\n", |
| 527 | irq_mask, ppid); |
| 528 | } |
| 529 | |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame^] | 530 | static void periph_interrupt(struct spmi_pmic_arb *pa, u16 apid, bool show) |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 531 | { |
| 532 | unsigned int irq; |
| 533 | u32 status; |
| 534 | int id; |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 535 | u8 sid = (pa->apid_data[apid].ppid >> 8) & 0xF; |
| 536 | u8 per = pa->apid_data[apid].ppid & 0xFF; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 537 | |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 538 | status = readl_relaxed(pa->intr + pa->ver_ops->irq_status(apid)); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 539 | while (status) { |
| 540 | id = ffs(status) - 1; |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 541 | status &= ~BIT(id); |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 542 | irq = irq_find_mapping(pa->domain, HWIRQ(sid, per, id, apid)); |
Abhijeet Dharmapurikar | b9b8744 | 2016-01-08 10:50:19 -0800 | [diff] [blame] | 543 | if (irq == 0) { |
| 544 | cleanup_irq(pa, apid, id); |
| 545 | continue; |
| 546 | } |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame^] | 547 | if (show) { |
| 548 | struct irq_desc *desc; |
| 549 | const char *name = "null"; |
| 550 | |
| 551 | desc = irq_to_desc(irq); |
| 552 | if (desc == NULL) |
| 553 | name = "stray irq"; |
| 554 | else if (desc->action && desc->action->name) |
| 555 | name = desc->action->name; |
| 556 | |
| 557 | pr_warn("spmi_show_resume_irq: %d triggered [0x%01x, 0x%02x, 0x%01x] %s\n", |
| 558 | irq, sid, per, id, name); |
| 559 | } else { |
| 560 | generic_handle_irq(irq); |
| 561 | } |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 562 | } |
| 563 | } |
| 564 | |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame^] | 565 | static void __pmic_arb_chained_irq(struct spmi_pmic_arb *pa, bool show) |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 566 | { |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 567 | void __iomem *intr = pa->intr; |
| 568 | int first = pa->min_apid >> 5; |
| 569 | int last = pa->max_apid >> 5; |
Abhijeet Dharmapurikar | 5e5078b | 2016-04-27 20:39:46 -0700 | [diff] [blame] | 570 | u32 status, enable; |
| 571 | int i, id, apid; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 572 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 573 | for (i = first; i <= last; ++i) { |
| 574 | status = readl_relaxed(intr + |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 575 | pa->ver_ops->owner_acc_status(pa->ee, i)); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 576 | while (status) { |
| 577 | id = ffs(status) - 1; |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 578 | status &= ~BIT(id); |
Abhijeet Dharmapurikar | 5e5078b | 2016-04-27 20:39:46 -0700 | [diff] [blame] | 579 | apid = id + i * 32; |
| 580 | enable = readl_relaxed(intr + |
| 581 | pa->ver_ops->acc_enable(apid)); |
| 582 | if (enable & SPMI_PIC_ACC_ENABLE_BIT) |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame^] | 583 | periph_interrupt(pa, apid, show); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 584 | } |
| 585 | } |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame^] | 586 | } |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 587 | |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame^] | 588 | static void pmic_arb_chained_irq(struct irq_desc *desc) |
| 589 | { |
| 590 | struct spmi_pmic_arb *pa = irq_desc_get_handler_data(desc); |
| 591 | struct irq_chip *chip = irq_desc_get_chip(desc); |
| 592 | |
| 593 | chained_irq_enter(chip, desc); |
| 594 | __pmic_arb_chained_irq(pa, false); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 595 | chained_irq_exit(chip, desc); |
| 596 | } |
| 597 | |
| 598 | static void qpnpint_irq_ack(struct irq_data *d) |
| 599 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 600 | struct spmi_pmic_arb *pa = irq_data_get_irq_chip_data(d); |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 601 | u8 irq = HWIRQ_IRQ(d->hwirq); |
| 602 | u16 apid = HWIRQ_APID(d->hwirq); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 603 | u8 data; |
| 604 | |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 605 | writel_relaxed(BIT(irq), pa->intr + pa->ver_ops->irq_clear(apid)); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 606 | |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 607 | data = BIT(irq); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 608 | qpnpint_spmi_write(d, QPNPINT_REG_LATCHED_CLR, &data, 1); |
| 609 | } |
| 610 | |
| 611 | static void qpnpint_irq_mask(struct irq_data *d) |
| 612 | { |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 613 | u8 irq = HWIRQ_IRQ(d->hwirq); |
Abhijeet Dharmapurikar | 8f8ec81 | 2016-01-08 12:54:36 -0800 | [diff] [blame] | 614 | u8 data = BIT(irq); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 615 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 616 | qpnpint_spmi_write(d, QPNPINT_REG_EN_CLR, &data, 1); |
| 617 | } |
| 618 | |
| 619 | static void qpnpint_irq_unmask(struct irq_data *d) |
| 620 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 621 | struct spmi_pmic_arb *pa = irq_data_get_irq_chip_data(d); |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 622 | u8 irq = HWIRQ_IRQ(d->hwirq); |
| 623 | u16 apid = HWIRQ_APID(d->hwirq); |
David Collins | a5a32ce | 2013-11-05 09:31:16 -0800 | [diff] [blame] | 624 | u8 buf[2]; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 625 | |
Abhijeet Dharmapurikar | c27d863 | 2016-02-23 15:56:23 -0800 | [diff] [blame] | 626 | writel_relaxed(SPMI_PIC_ACC_ENABLE_BIT, |
| 627 | pa->intr + pa->ver_ops->acc_enable(apid)); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 628 | |
David Collins | a5a32ce | 2013-11-05 09:31:16 -0800 | [diff] [blame] | 629 | qpnpint_spmi_read(d, QPNPINT_REG_EN_SET, &buf[0], 1); |
| 630 | if (!(buf[0] & BIT(irq))) { |
| 631 | /* |
| 632 | * Since the interrupt is currently disabled, write to both the |
| 633 | * LATCHED_CLR and EN_SET registers so that a spurious interrupt |
| 634 | * cannot be triggered when the interrupt is enabled |
| 635 | */ |
| 636 | buf[0] = BIT(irq); |
| 637 | buf[1] = BIT(irq); |
| 638 | qpnpint_spmi_write(d, QPNPINT_REG_LATCHED_CLR, &buf, 2); |
| 639 | } |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 640 | } |
| 641 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 642 | static int qpnpint_irq_set_type(struct irq_data *d, unsigned int flow_type) |
| 643 | { |
| 644 | struct spmi_pmic_arb_qpnpint_type type; |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 645 | u8 irq = HWIRQ_IRQ(d->hwirq); |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 646 | u8 bit_mask_irq = BIT(irq); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 647 | |
| 648 | qpnpint_spmi_read(d, QPNPINT_REG_SET_TYPE, &type, sizeof(type)); |
| 649 | |
| 650 | if (flow_type & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING)) { |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 651 | type.type |= bit_mask_irq; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 652 | if (flow_type & IRQF_TRIGGER_RISING) |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 653 | type.polarity_high |= bit_mask_irq; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 654 | if (flow_type & IRQF_TRIGGER_FALLING) |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 655 | type.polarity_low |= bit_mask_irq; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 656 | } else { |
| 657 | if ((flow_type & (IRQF_TRIGGER_HIGH)) && |
| 658 | (flow_type & (IRQF_TRIGGER_LOW))) |
| 659 | return -EINVAL; |
| 660 | |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 661 | type.type &= ~bit_mask_irq; /* level trig */ |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 662 | if (flow_type & IRQF_TRIGGER_HIGH) |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 663 | type.polarity_high |= bit_mask_irq; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 664 | else |
Abhijeet Dharmapurikar | 469f2c3 | 2016-01-05 16:52:38 -0800 | [diff] [blame] | 665 | type.polarity_low |= bit_mask_irq; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 666 | } |
| 667 | |
| 668 | qpnpint_spmi_write(d, QPNPINT_REG_SET_TYPE, &type, sizeof(type)); |
Abhijeet Dharmapurikar | 2464e90 | 2016-04-19 20:06:46 -0700 | [diff] [blame] | 669 | |
| 670 | if (flow_type & IRQ_TYPE_EDGE_BOTH) |
| 671 | irq_set_handler_locked(d, handle_edge_irq); |
| 672 | else |
| 673 | irq_set_handler_locked(d, handle_level_irq); |
| 674 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 675 | return 0; |
| 676 | } |
| 677 | |
Courtney Cavin | 60be423 | 2015-07-30 10:53:54 -0700 | [diff] [blame] | 678 | static int qpnpint_get_irqchip_state(struct irq_data *d, |
| 679 | enum irqchip_irq_state which, |
| 680 | bool *state) |
| 681 | { |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 682 | u8 irq = HWIRQ_IRQ(d->hwirq); |
Courtney Cavin | 60be423 | 2015-07-30 10:53:54 -0700 | [diff] [blame] | 683 | u8 status = 0; |
| 684 | |
| 685 | if (which != IRQCHIP_STATE_LINE_LEVEL) |
| 686 | return -EINVAL; |
| 687 | |
| 688 | qpnpint_spmi_read(d, QPNPINT_REG_RT_STS, &status, 1); |
| 689 | *state = !!(status & BIT(irq)); |
| 690 | |
| 691 | return 0; |
| 692 | } |
| 693 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 694 | static struct irq_chip pmic_arb_irqchip = { |
| 695 | .name = "pmic_arb", |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 696 | .irq_ack = qpnpint_irq_ack, |
| 697 | .irq_mask = qpnpint_irq_mask, |
| 698 | .irq_unmask = qpnpint_irq_unmask, |
| 699 | .irq_set_type = qpnpint_irq_set_type, |
Courtney Cavin | 60be423 | 2015-07-30 10:53:54 -0700 | [diff] [blame] | 700 | .irq_get_irqchip_state = qpnpint_get_irqchip_state, |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 701 | .flags = IRQCHIP_MASK_ON_SUSPEND |
| 702 | | IRQCHIP_SKIP_SET_WAKE, |
| 703 | }; |
| 704 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 705 | static int qpnpint_irq_domain_dt_translate(struct irq_domain *d, |
| 706 | struct device_node *controller, |
| 707 | const u32 *intspec, |
| 708 | unsigned int intsize, |
| 709 | unsigned long *out_hwirq, |
| 710 | unsigned int *out_type) |
| 711 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 712 | struct spmi_pmic_arb *pa = d->host_data; |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 713 | int rc; |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 714 | u16 apid; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 715 | |
| 716 | dev_dbg(&pa->spmic->dev, |
| 717 | "intspec[0] 0x%1x intspec[1] 0x%02x intspec[2] 0x%02x\n", |
| 718 | intspec[0], intspec[1], intspec[2]); |
| 719 | |
Marc Zyngier | 5d4c9bc | 2015-10-13 12:51:29 +0100 | [diff] [blame] | 720 | if (irq_domain_get_of_node(d) != controller) |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 721 | return -EINVAL; |
| 722 | if (intsize != 4) |
| 723 | return -EINVAL; |
| 724 | if (intspec[0] > 0xF || intspec[1] > 0xFF || intspec[2] > 0x7) |
| 725 | return -EINVAL; |
| 726 | |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 727 | rc = pa->ver_ops->ppid_to_apid(pa, intspec[0], |
| 728 | (intspec[1] << 8), &apid); |
| 729 | if (rc < 0) { |
| 730 | dev_err(&pa->spmic->dev, |
| 731 | "failed to xlate sid = 0x%x, periph = 0x%x, irq = %x rc = %d\n", |
| 732 | intspec[0], intspec[1], intspec[2], rc); |
| 733 | return rc; |
| 734 | } |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 735 | |
| 736 | /* Keep track of {max,min}_apid for bounding search during interrupt */ |
| 737 | if (apid > pa->max_apid) |
| 738 | pa->max_apid = apid; |
| 739 | if (apid < pa->min_apid) |
| 740 | pa->min_apid = apid; |
| 741 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 742 | *out_hwirq = HWIRQ(intspec[0], intspec[1], intspec[2], apid); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 743 | *out_type = intspec[3] & IRQ_TYPE_SENSE_MASK; |
| 744 | |
| 745 | dev_dbg(&pa->spmic->dev, "out_hwirq = %lu\n", *out_hwirq); |
| 746 | |
| 747 | return 0; |
| 748 | } |
| 749 | |
| 750 | static int qpnpint_irq_domain_map(struct irq_domain *d, |
| 751 | unsigned int virq, |
| 752 | irq_hw_number_t hwirq) |
| 753 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 754 | struct spmi_pmic_arb *pa = d->host_data; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 755 | |
| 756 | dev_dbg(&pa->spmic->dev, "virq = %u, hwirq = %lu\n", virq, hwirq); |
| 757 | |
| 758 | irq_set_chip_and_handler(virq, &pmic_arb_irqchip, handle_level_irq); |
| 759 | irq_set_chip_data(virq, d->host_data); |
| 760 | irq_set_noprobe(virq); |
| 761 | return 0; |
| 762 | } |
| 763 | |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 764 | static int |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 765 | pmic_arb_ppid_to_apid_v1(struct spmi_pmic_arb *pa, u8 sid, u16 addr, u16 *apid) |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 766 | { |
| 767 | u16 ppid = sid << 8 | ((addr >> 8) & 0xFF); |
| 768 | u32 *mapping_table = pa->mapping_table; |
| 769 | int index = 0, i; |
| 770 | u16 apid_valid; |
| 771 | u32 data; |
| 772 | |
| 773 | apid_valid = pa->ppid_to_apid[ppid]; |
| 774 | if (apid_valid & PMIC_ARB_CHAN_VALID) { |
| 775 | *apid = (apid_valid & ~PMIC_ARB_CHAN_VALID); |
| 776 | return 0; |
| 777 | } |
| 778 | |
| 779 | for (i = 0; i < SPMI_MAPPING_TABLE_TREE_DEPTH; ++i) { |
| 780 | if (!test_and_set_bit(index, pa->mapping_table_valid)) |
| 781 | mapping_table[index] = readl_relaxed(pa->cnfg + |
| 782 | SPMI_MAPPING_TABLE_REG(index)); |
| 783 | |
| 784 | data = mapping_table[index]; |
| 785 | |
| 786 | if (ppid & BIT(SPMI_MAPPING_BIT_INDEX(data))) { |
| 787 | if (SPMI_MAPPING_BIT_IS_1_FLAG(data)) { |
| 788 | index = SPMI_MAPPING_BIT_IS_1_RESULT(data); |
| 789 | } else { |
| 790 | *apid = SPMI_MAPPING_BIT_IS_1_RESULT(data); |
| 791 | pa->ppid_to_apid[ppid] |
| 792 | = *apid | PMIC_ARB_CHAN_VALID; |
Abhijeet Dharmapurikar | 8f8ec81 | 2016-01-08 12:54:36 -0800 | [diff] [blame] | 793 | pa->apid_data[*apid].ppid = ppid; |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 794 | return 0; |
| 795 | } |
| 796 | } else { |
| 797 | if (SPMI_MAPPING_BIT_IS_0_FLAG(data)) { |
| 798 | index = SPMI_MAPPING_BIT_IS_0_RESULT(data); |
| 799 | } else { |
| 800 | *apid = SPMI_MAPPING_BIT_IS_0_RESULT(data); |
| 801 | pa->ppid_to_apid[ppid] |
| 802 | = *apid | PMIC_ARB_CHAN_VALID; |
Abhijeet Dharmapurikar | 8f8ec81 | 2016-01-08 12:54:36 -0800 | [diff] [blame] | 803 | pa->apid_data[*apid].ppid = ppid; |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 804 | return 0; |
| 805 | } |
| 806 | } |
| 807 | } |
| 808 | |
| 809 | return -ENODEV; |
| 810 | } |
| 811 | |
| 812 | static int |
Abhijeet Dharmapurikar | 7888886 | 2016-07-05 17:54:47 -0700 | [diff] [blame] | 813 | pmic_arb_mode_v1_v3(struct spmi_pmic_arb *pa, u8 sid, u16 addr, mode_t *mode) |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 814 | { |
| 815 | *mode = 0600; |
| 816 | return 0; |
| 817 | } |
| 818 | |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 819 | /* v1 offset per ee */ |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 820 | static int |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 821 | pmic_arb_offset_v1(struct spmi_pmic_arb *pa, u8 sid, u16 addr, u32 *offset) |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 822 | { |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 823 | *offset = 0x800 + 0x80 * pa->channel; |
| 824 | return 0; |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 825 | } |
| 826 | |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 827 | static u16 pmic_arb_find_apid(struct spmi_pmic_arb *pa, u16 ppid) |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 828 | { |
| 829 | u32 regval, offset; |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 830 | u16 apid; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 831 | u16 id; |
| 832 | |
| 833 | /* |
| 834 | * PMIC_ARB_REG_CHNL is a table in HW mapping channel to ppid. |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 835 | * ppid_to_apid is an in-memory invert of that table. |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 836 | */ |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 837 | for (apid = pa->last_apid; apid < pa->max_periph; apid++) { |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 838 | regval = readl_relaxed(pa->cnfg + |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 839 | SPMI_OWNERSHIP_TABLE_REG(apid)); |
Abhijeet Dharmapurikar | 8f8ec81 | 2016-01-08 12:54:36 -0800 | [diff] [blame] | 840 | pa->apid_data[apid].owner = SPMI_OWNERSHIP_PERIPH2OWNER(regval); |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 841 | |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 842 | offset = PMIC_ARB_REG_CHNL(apid); |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 843 | if (offset >= pa->core_size) |
| 844 | break; |
| 845 | |
| 846 | regval = readl_relaxed(pa->core + offset); |
| 847 | if (!regval) |
| 848 | continue; |
| 849 | |
| 850 | id = (regval >> 8) & PMIC_ARB_PPID_MASK; |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 851 | pa->ppid_to_apid[id] = apid | PMIC_ARB_CHAN_VALID; |
Abhijeet Dharmapurikar | 8f8ec81 | 2016-01-08 12:54:36 -0800 | [diff] [blame] | 852 | pa->apid_data[apid].ppid = id; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 853 | if (id == ppid) { |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 854 | apid |= PMIC_ARB_CHAN_VALID; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 855 | break; |
| 856 | } |
| 857 | } |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 858 | pa->last_apid = apid & ~PMIC_ARB_CHAN_VALID; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 859 | |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 860 | return apid; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 861 | } |
| 862 | |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 863 | static int |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 864 | pmic_arb_ppid_to_apid_v2(struct spmi_pmic_arb *pa, u8 sid, u16 addr, u16 *apid) |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 865 | { |
| 866 | u16 ppid = (sid << 8) | (addr >> 8); |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 867 | u16 apid_valid; |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 868 | |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 869 | apid_valid = pa->ppid_to_apid[ppid]; |
| 870 | if (!(apid_valid & PMIC_ARB_CHAN_VALID)) |
| 871 | apid_valid = pmic_arb_find_apid(pa, ppid); |
| 872 | if (!(apid_valid & PMIC_ARB_CHAN_VALID)) |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 873 | return -ENODEV; |
| 874 | |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 875 | *apid = (apid_valid & ~PMIC_ARB_CHAN_VALID); |
| 876 | return 0; |
| 877 | } |
| 878 | |
| 879 | static int |
| 880 | pmic_arb_mode_v2(struct spmi_pmic_arb *pa, u8 sid, u16 addr, mode_t *mode) |
| 881 | { |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 882 | u16 apid; |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 883 | int rc; |
| 884 | |
| 885 | rc = pmic_arb_ppid_to_apid_v2(pa, sid, addr, &apid); |
| 886 | if (rc < 0) |
| 887 | return rc; |
| 888 | |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 889 | *mode = 0; |
| 890 | *mode |= 0400; |
| 891 | |
Abhijeet Dharmapurikar | 8f8ec81 | 2016-01-08 12:54:36 -0800 | [diff] [blame] | 892 | if (pa->ee == pa->apid_data[apid].owner) |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 893 | *mode |= 0200; |
| 894 | return 0; |
| 895 | } |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 896 | |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 897 | /* v2 offset per ppid and per ee */ |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 898 | static int |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 899 | pmic_arb_offset_v2(struct spmi_pmic_arb *pa, u8 sid, u16 addr, u32 *offset) |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 900 | { |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 901 | u16 apid; |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 902 | int rc; |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 903 | |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 904 | rc = pmic_arb_ppid_to_apid_v2(pa, sid, addr, &apid); |
| 905 | if (rc < 0) |
| 906 | return rc; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 907 | |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 908 | *offset = 0x1000 * pa->ee + 0x8000 * apid; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 909 | return 0; |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 910 | } |
| 911 | |
| 912 | static u32 pmic_arb_fmt_cmd_v1(u8 opc, u8 sid, u16 addr, u8 bc) |
| 913 | { |
| 914 | return (opc << 27) | ((sid & 0xf) << 20) | (addr << 4) | (bc & 0x7); |
| 915 | } |
| 916 | |
| 917 | static u32 pmic_arb_fmt_cmd_v2(u8 opc, u8 sid, u16 addr, u8 bc) |
| 918 | { |
| 919 | return (opc << 27) | ((addr & 0xff) << 4) | (bc & 0x7); |
| 920 | } |
| 921 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 922 | static u32 pmic_arb_owner_acc_status_v1(u8 m, u16 n) |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 923 | { |
| 924 | return 0x20 * m + 0x4 * n; |
| 925 | } |
| 926 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 927 | static u32 pmic_arb_owner_acc_status_v2(u8 m, u16 n) |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 928 | { |
| 929 | return 0x100000 + 0x1000 * m + 0x4 * n; |
| 930 | } |
| 931 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 932 | static u32 pmic_arb_owner_acc_status_v3(u8 m, u16 n) |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 933 | { |
| 934 | return 0x200000 + 0x1000 * m + 0x4 * n; |
| 935 | } |
| 936 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 937 | static u32 pmic_arb_acc_enable_v1(u16 n) |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 938 | { |
| 939 | return 0x200 + 0x4 * n; |
| 940 | } |
| 941 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 942 | static u32 pmic_arb_acc_enable_v2(u16 n) |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 943 | { |
| 944 | return 0x1000 * n; |
| 945 | } |
| 946 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 947 | static u32 pmic_arb_irq_status_v1(u16 n) |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 948 | { |
| 949 | return 0x600 + 0x4 * n; |
| 950 | } |
| 951 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 952 | static u32 pmic_arb_irq_status_v2(u16 n) |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 953 | { |
| 954 | return 0x4 + 0x1000 * n; |
| 955 | } |
| 956 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 957 | static u32 pmic_arb_irq_clear_v1(u16 n) |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 958 | { |
| 959 | return 0xA00 + 0x4 * n; |
| 960 | } |
| 961 | |
David Collins | 370a4fa | 2016-07-21 16:58:29 -0700 | [diff] [blame] | 962 | static u32 pmic_arb_irq_clear_v2(u16 n) |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 963 | { |
| 964 | return 0x8 + 0x1000 * n; |
| 965 | } |
| 966 | |
| 967 | static const struct pmic_arb_ver_ops pmic_arb_v1 = { |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 968 | .ver_str = "v1", |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 969 | .ppid_to_apid = pmic_arb_ppid_to_apid_v1, |
Abhijeet Dharmapurikar | 7888886 | 2016-07-05 17:54:47 -0700 | [diff] [blame] | 970 | .mode = pmic_arb_mode_v1_v3, |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 971 | .non_data_cmd = pmic_arb_non_data_cmd_v1, |
| 972 | .offset = pmic_arb_offset_v1, |
| 973 | .fmt_cmd = pmic_arb_fmt_cmd_v1, |
| 974 | .owner_acc_status = pmic_arb_owner_acc_status_v1, |
| 975 | .acc_enable = pmic_arb_acc_enable_v1, |
| 976 | .irq_status = pmic_arb_irq_status_v1, |
| 977 | .irq_clear = pmic_arb_irq_clear_v1, |
| 978 | }; |
| 979 | |
| 980 | static const struct pmic_arb_ver_ops pmic_arb_v2 = { |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 981 | .ver_str = "v2", |
Abhijeet Dharmapurikar | 6e9eb38 | 2016-01-08 12:50:24 -0800 | [diff] [blame] | 982 | .ppid_to_apid = pmic_arb_ppid_to_apid_v2, |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 983 | .mode = pmic_arb_mode_v2, |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 984 | .non_data_cmd = pmic_arb_non_data_cmd_v2, |
| 985 | .offset = pmic_arb_offset_v2, |
| 986 | .fmt_cmd = pmic_arb_fmt_cmd_v2, |
| 987 | .owner_acc_status = pmic_arb_owner_acc_status_v2, |
| 988 | .acc_enable = pmic_arb_acc_enable_v2, |
| 989 | .irq_status = pmic_arb_irq_status_v2, |
| 990 | .irq_clear = pmic_arb_irq_clear_v2, |
| 991 | }; |
| 992 | |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 993 | static const struct pmic_arb_ver_ops pmic_arb_v3 = { |
| 994 | .ver_str = "v3", |
| 995 | .ppid_to_apid = pmic_arb_ppid_to_apid_v2, |
Abhijeet Dharmapurikar | 7888886 | 2016-07-05 17:54:47 -0700 | [diff] [blame] | 996 | .mode = pmic_arb_mode_v1_v3, |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 997 | .non_data_cmd = pmic_arb_non_data_cmd_v2, |
| 998 | .offset = pmic_arb_offset_v2, |
| 999 | .fmt_cmd = pmic_arb_fmt_cmd_v2, |
| 1000 | .owner_acc_status = pmic_arb_owner_acc_status_v3, |
| 1001 | .acc_enable = pmic_arb_acc_enable_v2, |
| 1002 | .irq_status = pmic_arb_irq_status_v2, |
| 1003 | .irq_clear = pmic_arb_irq_clear_v2, |
| 1004 | }; |
| 1005 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 1006 | static const struct irq_domain_ops pmic_arb_irq_domain_ops = { |
| 1007 | .map = qpnpint_irq_domain_map, |
| 1008 | .xlate = qpnpint_irq_domain_dt_translate, |
| 1009 | }; |
| 1010 | |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame^] | 1011 | static void spmi_pmic_arb_resume(void) |
| 1012 | { |
| 1013 | if (spmi_show_resume_irq()) |
| 1014 | __pmic_arb_chained_irq(the_pa, true); |
| 1015 | } |
| 1016 | |
| 1017 | static struct syscore_ops spmi_pmic_arb_syscore_ops = { |
| 1018 | .resume = spmi_pmic_arb_resume, |
| 1019 | }; |
| 1020 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1021 | static int spmi_pmic_arb_probe(struct platform_device *pdev) |
| 1022 | { |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 1023 | struct spmi_pmic_arb *pa; |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1024 | struct spmi_controller *ctrl; |
| 1025 | struct resource *res; |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1026 | void __iomem *core; |
| 1027 | u32 channel, ee, hw_ver; |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 1028 | int err; |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1029 | |
| 1030 | ctrl = spmi_controller_alloc(&pdev->dev, sizeof(*pa)); |
| 1031 | if (!ctrl) |
| 1032 | return -ENOMEM; |
| 1033 | |
| 1034 | pa = spmi_controller_get_drvdata(ctrl); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 1035 | pa->spmic = ctrl; |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1036 | |
| 1037 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "core"); |
Abhijeet Dharmapurikar | 57132f5 | 2016-09-13 11:10:48 -0700 | [diff] [blame] | 1038 | if (!res) { |
| 1039 | dev_err(&pdev->dev, "core resource not specified\n"); |
| 1040 | err = -EINVAL; |
| 1041 | goto err_put_ctrl; |
| 1042 | } |
| 1043 | |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 1044 | pa->core_size = resource_size(res); |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 1045 | if (pa->core_size <= 0x800) { |
| 1046 | dev_err(&pdev->dev, "core_size is smaller than 0x800. Failing Probe\n"); |
| 1047 | err = -EINVAL; |
| 1048 | goto err_put_ctrl; |
| 1049 | } |
| 1050 | |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1051 | core = devm_ioremap_resource(&ctrl->dev, res); |
| 1052 | if (IS_ERR(core)) { |
| 1053 | err = PTR_ERR(core); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1054 | goto err_put_ctrl; |
| 1055 | } |
| 1056 | |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1057 | hw_ver = readl_relaxed(core + PMIC_ARB_VERSION); |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1058 | |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 1059 | if (hw_ver < PMIC_ARB_VERSION_V2_MIN) { |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1060 | pa->ver_ops = &pmic_arb_v1; |
| 1061 | pa->wr_base = core; |
| 1062 | pa->rd_base = core; |
| 1063 | } else { |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 1064 | pa->core = core; |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 1065 | |
| 1066 | if (hw_ver < PMIC_ARB_VERSION_V3_MIN) |
| 1067 | pa->ver_ops = &pmic_arb_v2; |
| 1068 | else |
| 1069 | pa->ver_ops = &pmic_arb_v3; |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1070 | |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 1071 | /* the apid to ppid table starts at PMIC_ARB_REG_CHNL(0) */ |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 1072 | pa->max_periph = (pa->core_size - PMIC_ARB_REG_CHNL(0)) / 4; |
Abhijeet Dharmapurikar | ea64f7f | 2016-01-18 22:00:33 -0800 | [diff] [blame] | 1073 | |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1074 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, |
| 1075 | "obsrvr"); |
| 1076 | pa->rd_base = devm_ioremap_resource(&ctrl->dev, res); |
| 1077 | if (IS_ERR(pa->rd_base)) { |
| 1078 | err = PTR_ERR(pa->rd_base); |
| 1079 | goto err_put_ctrl; |
| 1080 | } |
| 1081 | |
| 1082 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, |
| 1083 | "chnls"); |
| 1084 | pa->wr_base = devm_ioremap_resource(&ctrl->dev, res); |
| 1085 | if (IS_ERR(pa->wr_base)) { |
| 1086 | err = PTR_ERR(pa->wr_base); |
| 1087 | goto err_put_ctrl; |
| 1088 | } |
| 1089 | |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 1090 | pa->ppid_to_apid = devm_kcalloc(&ctrl->dev, |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 1091 | PMIC_ARB_MAX_PPID, |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 1092 | sizeof(*pa->ppid_to_apid), |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 1093 | GFP_KERNEL); |
Abhijeet Dharmapurikar | 39155b6 | 2016-01-06 19:55:21 -0800 | [diff] [blame] | 1094 | if (!pa->ppid_to_apid) { |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1095 | err = -ENOMEM; |
| 1096 | goto err_put_ctrl; |
| 1097 | } |
Gilad Avidov | d0c6ae4 | 2015-03-25 11:37:32 -0600 | [diff] [blame] | 1098 | } |
| 1099 | |
Nicholas Troast | 9c10f8f | 2016-03-28 10:16:31 -0700 | [diff] [blame] | 1100 | dev_info(&ctrl->dev, "PMIC arbiter version %s (0x%x)\n", |
| 1101 | pa->ver_ops->ver_str, hw_ver); |
| 1102 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1103 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "intr"); |
| 1104 | pa->intr = devm_ioremap_resource(&ctrl->dev, res); |
| 1105 | if (IS_ERR(pa->intr)) { |
| 1106 | err = PTR_ERR(pa->intr); |
| 1107 | goto err_put_ctrl; |
| 1108 | } |
| 1109 | |
| 1110 | res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cnfg"); |
| 1111 | pa->cnfg = devm_ioremap_resource(&ctrl->dev, res); |
| 1112 | if (IS_ERR(pa->cnfg)) { |
| 1113 | err = PTR_ERR(pa->cnfg); |
| 1114 | goto err_put_ctrl; |
| 1115 | } |
| 1116 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 1117 | pa->irq = platform_get_irq_byname(pdev, "periph_irq"); |
| 1118 | if (pa->irq < 0) { |
| 1119 | err = pa->irq; |
| 1120 | goto err_put_ctrl; |
| 1121 | } |
| 1122 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1123 | err = of_property_read_u32(pdev->dev.of_node, "qcom,channel", &channel); |
| 1124 | if (err) { |
| 1125 | dev_err(&pdev->dev, "channel unspecified.\n"); |
| 1126 | goto err_put_ctrl; |
| 1127 | } |
| 1128 | |
| 1129 | if (channel > 5) { |
| 1130 | dev_err(&pdev->dev, "invalid channel (%u) specified.\n", |
| 1131 | channel); |
Christophe JAILLET | e98cc18 | 2016-09-26 22:24:46 +0200 | [diff] [blame] | 1132 | err = -EINVAL; |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1133 | goto err_put_ctrl; |
| 1134 | } |
| 1135 | |
| 1136 | pa->channel = channel; |
| 1137 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 1138 | err = of_property_read_u32(pdev->dev.of_node, "qcom,ee", &ee); |
| 1139 | if (err) { |
| 1140 | dev_err(&pdev->dev, "EE unspecified.\n"); |
| 1141 | goto err_put_ctrl; |
| 1142 | } |
| 1143 | |
| 1144 | if (ee > 5) { |
| 1145 | dev_err(&pdev->dev, "invalid EE (%u) specified\n", ee); |
| 1146 | err = -EINVAL; |
| 1147 | goto err_put_ctrl; |
| 1148 | } |
| 1149 | |
| 1150 | pa->ee = ee; |
| 1151 | |
Stephen Boyd | 987a9f1 | 2015-11-17 16:13:55 -0800 | [diff] [blame] | 1152 | pa->mapping_table = devm_kcalloc(&ctrl->dev, PMIC_ARB_MAX_PERIPHS - 1, |
| 1153 | sizeof(*pa->mapping_table), GFP_KERNEL); |
| 1154 | if (!pa->mapping_table) { |
| 1155 | err = -ENOMEM; |
| 1156 | goto err_put_ctrl; |
| 1157 | } |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 1158 | |
| 1159 | /* Initialize max_apid/min_apid to the opposite bounds, during |
| 1160 | * the irq domain translation, we are sure to update these */ |
| 1161 | pa->max_apid = 0; |
| 1162 | pa->min_apid = PMIC_ARB_MAX_PERIPHS - 1; |
| 1163 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1164 | platform_set_drvdata(pdev, ctrl); |
| 1165 | raw_spin_lock_init(&pa->lock); |
| 1166 | |
| 1167 | ctrl->cmd = pmic_arb_cmd; |
| 1168 | ctrl->read_cmd = pmic_arb_read_cmd; |
| 1169 | ctrl->write_cmd = pmic_arb_write_cmd; |
| 1170 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 1171 | dev_dbg(&pdev->dev, "adding irq domain\n"); |
| 1172 | pa->domain = irq_domain_add_tree(pdev->dev.of_node, |
| 1173 | &pmic_arb_irq_domain_ops, pa); |
| 1174 | if (!pa->domain) { |
| 1175 | dev_err(&pdev->dev, "unable to create irq_domain\n"); |
| 1176 | err = -ENOMEM; |
| 1177 | goto err_put_ctrl; |
| 1178 | } |
| 1179 | |
Thomas Gleixner | fb68ba6 | 2015-07-13 20:52:24 +0000 | [diff] [blame] | 1180 | irq_set_chained_handler_and_data(pa->irq, pmic_arb_chained_irq, pa); |
Nicholas Troast | 237e914 | 2016-06-14 16:39:38 -0700 | [diff] [blame] | 1181 | enable_irq_wake(pa->irq); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 1182 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1183 | err = spmi_controller_add(ctrl); |
| 1184 | if (err) |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 1185 | goto err_domain_remove; |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1186 | |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame^] | 1187 | the_pa = pa; |
| 1188 | register_syscore_ops(&spmi_pmic_arb_syscore_ops); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1189 | return 0; |
| 1190 | |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 1191 | err_domain_remove: |
Thomas Gleixner | fb68ba6 | 2015-07-13 20:52:24 +0000 | [diff] [blame] | 1192 | irq_set_chained_handler_and_data(pa->irq, NULL, NULL); |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 1193 | irq_domain_remove(pa->domain); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1194 | err_put_ctrl: |
| 1195 | spmi_controller_put(ctrl); |
| 1196 | return err; |
| 1197 | } |
| 1198 | |
| 1199 | static int spmi_pmic_arb_remove(struct platform_device *pdev) |
| 1200 | { |
| 1201 | struct spmi_controller *ctrl = platform_get_drvdata(pdev); |
Abhijeet Dharmapurikar | fbcfb7e | 2016-01-08 12:45:20 -0800 | [diff] [blame] | 1202 | struct spmi_pmic_arb *pa = spmi_controller_get_drvdata(ctrl); |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame^] | 1203 | |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1204 | spmi_controller_remove(ctrl); |
Thomas Gleixner | fb68ba6 | 2015-07-13 20:52:24 +0000 | [diff] [blame] | 1205 | irq_set_chained_handler_and_data(pa->irq, NULL, NULL); |
Abhijeet Dharmapurikar | 69dc3fc | 2016-11-07 15:51:24 -0800 | [diff] [blame^] | 1206 | unregister_syscore_ops(&spmi_pmic_arb_syscore_ops); |
| 1207 | the_pa = NULL; |
Josh Cartwright | 67b563f | 2014-02-12 13:44:25 -0600 | [diff] [blame] | 1208 | irq_domain_remove(pa->domain); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1209 | spmi_controller_put(ctrl); |
| 1210 | return 0; |
| 1211 | } |
| 1212 | |
| 1213 | static const struct of_device_id spmi_pmic_arb_match_table[] = { |
| 1214 | { .compatible = "qcom,spmi-pmic-arb", }, |
| 1215 | {}, |
| 1216 | }; |
| 1217 | MODULE_DEVICE_TABLE(of, spmi_pmic_arb_match_table); |
| 1218 | |
| 1219 | static struct platform_driver spmi_pmic_arb_driver = { |
| 1220 | .probe = spmi_pmic_arb_probe, |
| 1221 | .remove = spmi_pmic_arb_remove, |
| 1222 | .driver = { |
| 1223 | .name = "spmi_pmic_arb", |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1224 | .of_match_table = spmi_pmic_arb_match_table, |
| 1225 | }, |
| 1226 | }; |
Abhijeet Dharmapurikar | df9bf94 | 2015-09-23 11:36:23 -0700 | [diff] [blame] | 1227 | |
| 1228 | int __init spmi_pmic_arb_init(void) |
| 1229 | { |
| 1230 | return platform_driver_register(&spmi_pmic_arb_driver); |
| 1231 | } |
| 1232 | arch_initcall(spmi_pmic_arb_init); |
Kenneth Heitke | 39ae93e | 2014-02-12 13:44:24 -0600 | [diff] [blame] | 1233 | |
| 1234 | MODULE_LICENSE("GPL v2"); |
| 1235 | MODULE_ALIAS("platform:spmi_pmic_arb"); |