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-rw-r--r--include/linux/regmap.h69
1 files changed, 67 insertions, 2 deletions
diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index 56af22ec9aba..7f7e00df3adf 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -14,12 +14,14 @@
14 */ 14 */
15 15
16#include <linux/list.h> 16#include <linux/list.h>
17#include <linux/rbtree.h>
17 18
18struct module; 19struct module;
19struct device; 20struct device;
20struct i2c_client; 21struct i2c_client;
21struct spi_device; 22struct spi_device;
22struct regmap; 23struct regmap;
24struct regmap_range_cfg;
23 25
24/* An enum of all the supported cache types */ 26/* An enum of all the supported cache types */
25enum regcache_type { 27enum regcache_type {
@@ -43,6 +45,14 @@ struct reg_default {
43 45
44#ifdef CONFIG_REGMAP 46#ifdef CONFIG_REGMAP
45 47
48enum regmap_endian {
49 /* Unspecified -> 0 -> Backwards compatible default */
50 REGMAP_ENDIAN_DEFAULT = 0,
51 REGMAP_ENDIAN_BIG,
52 REGMAP_ENDIAN_LITTLE,
53 REGMAP_ENDIAN_NATIVE,
54};
55
46/** 56/**
47 * Configuration for the register map of a device. 57 * Configuration for the register map of a device.
48 * 58 *
@@ -84,6 +94,15 @@ struct reg_default {
84 * @reg_defaults_raw: Power on reset values for registers (for use with 94 * @reg_defaults_raw: Power on reset values for registers (for use with
85 * register cache support). 95 * register cache support).
86 * @num_reg_defaults_raw: Number of elements in reg_defaults_raw. 96 * @num_reg_defaults_raw: Number of elements in reg_defaults_raw.
97 * @reg_format_endian: Endianness for formatted register addresses. If this is
98 * DEFAULT, the @reg_format_endian_default value from the
99 * regmap bus is used.
100 * @val_format_endian: Endianness for formatted register values. If this is
101 * DEFAULT, the @reg_format_endian_default value from the
102 * regmap bus is used.
103 *
104 * @ranges: Array of configuration entries for virtual address ranges.
105 * @num_ranges: Number of range configuration entries.
87 */ 106 */
88struct regmap_config { 107struct regmap_config {
89 const char *name; 108 const char *name;
@@ -109,6 +128,43 @@ struct regmap_config {
109 u8 write_flag_mask; 128 u8 write_flag_mask;
110 129
111 bool use_single_rw; 130 bool use_single_rw;
131
132 enum regmap_endian reg_format_endian;
133 enum regmap_endian val_format_endian;
134
135 const struct regmap_range_cfg *ranges;
136 unsigned int n_ranges;
137};
138
139/**
140 * Configuration for indirectly accessed or paged registers.
141 * Registers, mapped to this virtual range, are accessed in two steps:
142 * 1. page selector register update;
143 * 2. access through data window registers.
144 *
145 * @range_min: Address of the lowest register address in virtual range.
146 * @range_max: Address of the highest register in virtual range.
147 *
148 * @page_sel_reg: Register with selector field.
149 * @page_sel_mask: Bit shift for selector value.
150 * @page_sel_shift: Bit mask for selector value.
151 *
152 * @window_start: Address of first (lowest) register in data window.
153 * @window_len: Number of registers in data window.
154 */
155struct regmap_range_cfg {
156 /* Registers of virtual address range */
157 unsigned int range_min;
158 unsigned int range_max;
159
160 /* Page selector for indirect addressing */
161 unsigned int selector_reg;
162 unsigned int selector_mask;
163 int selector_shift;
164
165 /* Data window (per each page) */
166 unsigned int window_start;
167 unsigned int window_len;
112}; 168};
113 169
114typedef int (*regmap_hw_write)(void *context, const void *data, 170typedef int (*regmap_hw_write)(void *context, const void *data,
@@ -133,6 +189,12 @@ typedef void (*regmap_hw_free_context)(void *context);
133 * data. 189 * data.
134 * @read_flag_mask: Mask to be set in the top byte of the register when doing 190 * @read_flag_mask: Mask to be set in the top byte of the register when doing
135 * a read. 191 * a read.
192 * @reg_format_endian_default: Default endianness for formatted register
193 * addresses. Used when the regmap_config specifies DEFAULT. If this is
194 * DEFAULT, BIG is assumed.
195 * @val_format_endian_default: Default endianness for formatted register
196 * values. Used when the regmap_config specifies DEFAULT. If this is
197 * DEFAULT, BIG is assumed.
136 */ 198 */
137struct regmap_bus { 199struct regmap_bus {
138 bool fast_io; 200 bool fast_io;
@@ -141,6 +203,8 @@ struct regmap_bus {
141 regmap_hw_read read; 203 regmap_hw_read read;
142 regmap_hw_free_context free_context; 204 regmap_hw_free_context free_context;
143 u8 read_flag_mask; 205 u8 read_flag_mask;
206 enum regmap_endian reg_format_endian_default;
207 enum regmap_endian val_format_endian_default;
144}; 208};
145 209
146struct regmap *regmap_init(struct device *dev, 210struct regmap *regmap_init(struct device *dev,
@@ -219,6 +283,7 @@ struct regmap_irq {
219 * @status_base: Base status register address. 283 * @status_base: Base status register address.
220 * @mask_base: Base mask register address. 284 * @mask_base: Base mask register address.
221 * @ack_base: Base ack address. If zero then the chip is clear on read. 285 * @ack_base: Base ack address. If zero then the chip is clear on read.
286 * @wake_base: Base address for wake enables. If zero unsupported.
222 * @irq_reg_stride: Stride to use for chips where registers are not contiguous. 287 * @irq_reg_stride: Stride to use for chips where registers are not contiguous.
223 * 288 *
224 * @num_regs: Number of registers in each control bank. 289 * @num_regs: Number of registers in each control bank.
@@ -232,6 +297,7 @@ struct regmap_irq_chip {
232 unsigned int status_base; 297 unsigned int status_base;
233 unsigned int mask_base; 298 unsigned int mask_base;
234 unsigned int ack_base; 299 unsigned int ack_base;
300 unsigned int wake_base;
235 unsigned int irq_reg_stride; 301 unsigned int irq_reg_stride;
236 302
237 int num_regs; 303 int num_regs;
@@ -243,7 +309,7 @@ struct regmap_irq_chip {
243struct regmap_irq_chip_data; 309struct regmap_irq_chip_data;
244 310
245int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags, 311int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
246 int irq_base, struct regmap_irq_chip *chip, 312 int irq_base, const struct regmap_irq_chip *chip,
247 struct regmap_irq_chip_data **data); 313 struct regmap_irq_chip_data **data);
248void regmap_del_irq_chip(int irq, struct regmap_irq_chip_data *data); 314void regmap_del_irq_chip(int irq, struct regmap_irq_chip_data *data);
249int regmap_irq_chip_get_base(struct regmap_irq_chip_data *data); 315int regmap_irq_chip_get_base(struct regmap_irq_chip_data *data);
@@ -361,7 +427,6 @@ static inline int regmap_register_patch(struct regmap *map,
361static inline struct regmap *dev_get_regmap(struct device *dev, 427static inline struct regmap *dev_get_regmap(struct device *dev,
362 const char *name) 428 const char *name)
363{ 429{
364 WARN_ONCE(1, "regmap API is disabled");
365 return NULL; 430 return NULL;
366} 431}
367 432