Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
2/* Copyright(c) 2015-17 Intel Corporation. */
3
4#ifndef __SDW_INTEL_LOCAL_H
5#define __SDW_INTEL_LOCAL_H
6
7struct hdac_bus;
8
9/**
10 * struct sdw_intel_link_res - Soundwire Intel link resource structure,
11 * typically populated by the controller driver.
12 * @hw_ops: platform-specific ops
13 * @mmio_base: mmio base of SoundWire registers
14 * @registers: Link IO registers base
15 * @ip_offset: offset for MCP_IP registers
16 * @shim: Audio shim pointer
17 * @shim_vs: Audio vendor-specific shim pointer
18 * @alh: ALH (Audio Link Hub) pointer
19 * @irq: Interrupt line
20 * @ops: Shim callback ops
21 * @dev: device implementing hw_params and free callbacks
22 * @shim_lock: mutex to handle access to shared SHIM registers
23 * @shim_mask: global pointer to check SHIM register initialization
24 * @clock_stop_quirks: mask defining requested behavior on pm_suspend
25 * @link_mask: global mask needed for power-up/down sequences
26 * @cdns: Cadence master descriptor
27 * @list: used to walk-through all masters exposed by the same controller
28 * @hbus: hdac_bus pointer, needed for power management
29 */
30struct sdw_intel_link_res {
31 const struct sdw_intel_hw_ops *hw_ops;
32
33 void __iomem *mmio_base; /* not strictly needed, useful for debug */
34 void __iomem *registers;
35 u32 ip_offset;
36 void __iomem *shim;
37 void __iomem *shim_vs;
38 void __iomem *alh;
39 int irq;
40 const struct sdw_intel_ops *ops;
41 struct device *dev;
42 struct mutex *shim_lock; /* protect shared registers */
43 u32 *shim_mask;
44 u32 clock_stop_quirks;
45 u32 link_mask;
46 struct sdw_cdns *cdns;
47 struct list_head list;
48 struct hdac_bus *hbus;
49};
50
51struct sdw_intel {
52 struct sdw_cdns cdns;
53 int instance;
54 struct sdw_intel_link_res *link_res;
55 bool startup_done;
56#ifdef CONFIG_DEBUG_FS
57 struct dentry *debugfs;
58#endif
59};
60
61struct sdw_intel_prop {
62 u16 doaise;
63 u16 doais;
64 u16 dodse;
65 u16 dods;
66};
67
68enum intel_pdi_type {
69 INTEL_PDI_IN = 0,
70 INTEL_PDI_OUT = 1,
71 INTEL_PDI_BD = 2,
72};
73
74/*
75 * Read, write helpers for HW registers
76 */
77static inline int intel_readl(void __iomem *base, int offset)
78{
79 return readl(base + offset);
80}
81
82static inline void intel_writel(void __iomem *base, int offset, int value)
83{
84 writel(value, base + offset);
85}
86
87static inline u16 intel_readw(void __iomem *base, int offset)
88{
89 return readw(base + offset);
90}
91
92static inline void intel_writew(void __iomem *base, int offset, u16 value)
93{
94 writew(value, base + offset);
95}
96
97#define cdns_to_intel(_cdns) container_of(_cdns, struct sdw_intel, cdns)
98
99#define INTEL_MASTER_RESET_ITERATIONS 10
100
101#define SDW_INTEL_CHECK_OPS(sdw, cb) ((sdw) && (sdw)->link_res && (sdw)->link_res->hw_ops && \
102 (sdw)->link_res->hw_ops->cb)
103#define SDW_INTEL_OPS(sdw, cb) ((sdw)->link_res->hw_ops->cb)
104
105#ifdef CONFIG_DEBUG_FS
106void intel_ace2x_debugfs_init(struct sdw_intel *sdw);
107void intel_ace2x_debugfs_exit(struct sdw_intel *sdw);
108#else
109static inline void intel_ace2x_debugfs_init(struct sdw_intel *sdw) {}
110static inline void intel_ace2x_debugfs_exit(struct sdw_intel *sdw) {}
111#endif
112
113static inline void sdw_intel_debugfs_init(struct sdw_intel *sdw)
114{
115 if (SDW_INTEL_CHECK_OPS(sdw, debugfs_init))
116 SDW_INTEL_OPS(sdw, debugfs_init)(sdw);
117}
118
119static inline void sdw_intel_debugfs_exit(struct sdw_intel *sdw)
120{
121 if (SDW_INTEL_CHECK_OPS(sdw, debugfs_exit))
122 SDW_INTEL_OPS(sdw, debugfs_exit)(sdw);
123}
124
125static inline int sdw_intel_register_dai(struct sdw_intel *sdw)
126{
127 if (SDW_INTEL_CHECK_OPS(sdw, register_dai))
128 return SDW_INTEL_OPS(sdw, register_dai)(sdw);
129 return -ENOTSUPP;
130}
131
132static inline void sdw_intel_check_clock_stop(struct sdw_intel *sdw)
133{
134 if (SDW_INTEL_CHECK_OPS(sdw, check_clock_stop))
135 SDW_INTEL_OPS(sdw, check_clock_stop)(sdw);
136}
137
138static inline int sdw_intel_start_bus(struct sdw_intel *sdw)
139{
140 if (SDW_INTEL_CHECK_OPS(sdw, start_bus))
141 return SDW_INTEL_OPS(sdw, start_bus)(sdw);
142 return -ENOTSUPP;
143}
144
145static inline int sdw_intel_start_bus_after_reset(struct sdw_intel *sdw)
146{
147 if (SDW_INTEL_CHECK_OPS(sdw, start_bus_after_reset))
148 return SDW_INTEL_OPS(sdw, start_bus_after_reset)(sdw);
149 return -ENOTSUPP;
150}
151
152static inline int sdw_intel_start_bus_after_clock_stop(struct sdw_intel *sdw)
153{
154 if (SDW_INTEL_CHECK_OPS(sdw, start_bus_after_clock_stop))
155 return SDW_INTEL_OPS(sdw, start_bus_after_clock_stop)(sdw);
156 return -ENOTSUPP;
157}
158
159static inline int sdw_intel_stop_bus(struct sdw_intel *sdw, bool clock_stop)
160{
161 if (SDW_INTEL_CHECK_OPS(sdw, stop_bus))
162 return SDW_INTEL_OPS(sdw, stop_bus)(sdw, clock_stop);
163 return -ENOTSUPP;
164}
165
166static inline int sdw_intel_link_power_up(struct sdw_intel *sdw)
167{
168 if (SDW_INTEL_CHECK_OPS(sdw, link_power_up))
169 return SDW_INTEL_OPS(sdw, link_power_up)(sdw);
170 return -ENOTSUPP;
171}
172
173static inline int sdw_intel_link_power_down(struct sdw_intel *sdw)
174{
175 if (SDW_INTEL_CHECK_OPS(sdw, link_power_down))
176 return SDW_INTEL_OPS(sdw, link_power_down)(sdw);
177 return -ENOTSUPP;
178}
179
180static inline int sdw_intel_shim_check_wake(struct sdw_intel *sdw)
181{
182 if (SDW_INTEL_CHECK_OPS(sdw, shim_check_wake))
183 return SDW_INTEL_OPS(sdw, shim_check_wake)(sdw);
184 return -ENOTSUPP;
185}
186
187static inline void sdw_intel_shim_wake(struct sdw_intel *sdw, bool wake_enable)
188{
189 if (SDW_INTEL_CHECK_OPS(sdw, shim_wake))
190 SDW_INTEL_OPS(sdw, shim_wake)(sdw, wake_enable);
191}
192
193static inline void sdw_intel_sync_arm(struct sdw_intel *sdw)
194{
195 if (SDW_INTEL_CHECK_OPS(sdw, sync_arm))
196 SDW_INTEL_OPS(sdw, sync_arm)(sdw);
197}
198
199static inline int sdw_intel_sync_go_unlocked(struct sdw_intel *sdw)
200{
201 if (SDW_INTEL_CHECK_OPS(sdw, sync_go_unlocked))
202 return SDW_INTEL_OPS(sdw, sync_go_unlocked)(sdw);
203 return -ENOTSUPP;
204}
205
206static inline int sdw_intel_sync_go(struct sdw_intel *sdw)
207{
208 if (SDW_INTEL_CHECK_OPS(sdw, sync_go))
209 return SDW_INTEL_OPS(sdw, sync_go)(sdw);
210 return -ENOTSUPP;
211}
212
213static inline bool sdw_intel_sync_check_cmdsync_unlocked(struct sdw_intel *sdw)
214{
215 if (SDW_INTEL_CHECK_OPS(sdw, sync_check_cmdsync_unlocked))
216 return SDW_INTEL_OPS(sdw, sync_check_cmdsync_unlocked)(sdw);
217 return false;
218}
219
220/* common bus management */
221int intel_start_bus(struct sdw_intel *sdw);
222int intel_start_bus_after_reset(struct sdw_intel *sdw);
223void intel_check_clock_stop(struct sdw_intel *sdw);
224int intel_start_bus_after_clock_stop(struct sdw_intel *sdw);
225int intel_stop_bus(struct sdw_intel *sdw, bool clock_stop);
226
227/* common bank switch routines */
228int intel_pre_bank_switch(struct sdw_intel *sdw);
229int intel_post_bank_switch(struct sdw_intel *sdw);
230
231#endif /* __SDW_INTEL_LOCAL_H */