1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  *  Copyright © 2015 Broadcom
4  */
5 
6 #ifndef __SOC_RASPBERRY_FIRMWARE_H__
7 #define __SOC_RASPBERRY_FIRMWARE_H__
8 
9 #include <linux/types.h>
10 #include <linux/of_device.h>
11 
12 struct rpi_firmware;
13 
14 enum rpi_firmware_property_status {
15 	RPI_FIRMWARE_STATUS_REQUEST = 0,
16 	RPI_FIRMWARE_STATUS_SUCCESS = 0x80000000,
17 	RPI_FIRMWARE_STATUS_ERROR =   0x80000001,
18 };
19 
20 /**
21  * struct rpi_firmware_property_tag_header - Firmware property tag header
22  * @tag:		One of enum_mbox_property_tag.
23  * @buf_size:		The number of bytes in the value buffer following this
24  *			struct.
25  * @req_resp_size:	On submit, the length of the request (though it doesn't
26  *			appear to be currently used by the firmware).  On return,
27  *			the length of the response (always 4 byte aligned), with
28  *			the low bit set.
29  */
30 struct rpi_firmware_property_tag_header {
31 	u32 tag;
32 	u32 buf_size;
33 	u32 req_resp_size;
34 };
35 
36 enum rpi_firmware_property_tag {
37 	RPI_FIRMWARE_PROPERTY_END =                           0,
38 	RPI_FIRMWARE_GET_FIRMWARE_REVISION =                  0x00000001,
39 
40 	RPI_FIRMWARE_SET_CURSOR_INFO =                        0x00008010,
41 	RPI_FIRMWARE_SET_CURSOR_STATE =                       0x00008011,
42 
43 	RPI_FIRMWARE_GET_BOARD_MODEL =                        0x00010001,
44 	RPI_FIRMWARE_GET_BOARD_REVISION =                     0x00010002,
45 	RPI_FIRMWARE_GET_BOARD_MAC_ADDRESS =                  0x00010003,
46 	RPI_FIRMWARE_GET_BOARD_SERIAL =                       0x00010004,
47 	RPI_FIRMWARE_GET_ARM_MEMORY =                         0x00010005,
48 	RPI_FIRMWARE_GET_VC_MEMORY =                          0x00010006,
49 	RPI_FIRMWARE_GET_CLOCKS =                             0x00010007,
50 	RPI_FIRMWARE_GET_POWER_STATE =                        0x00020001,
51 	RPI_FIRMWARE_GET_TIMING =                             0x00020002,
52 	RPI_FIRMWARE_SET_POWER_STATE =                        0x00028001,
53 	RPI_FIRMWARE_GET_CLOCK_STATE =                        0x00030001,
54 	RPI_FIRMWARE_GET_CLOCK_RATE =                         0x00030002,
55 	RPI_FIRMWARE_GET_VOLTAGE =                            0x00030003,
56 	RPI_FIRMWARE_GET_MAX_CLOCK_RATE =                     0x00030004,
57 	RPI_FIRMWARE_GET_MAX_VOLTAGE =                        0x00030005,
58 	RPI_FIRMWARE_GET_TEMPERATURE =                        0x00030006,
59 	RPI_FIRMWARE_GET_MIN_CLOCK_RATE =                     0x00030007,
60 	RPI_FIRMWARE_GET_MIN_VOLTAGE =                        0x00030008,
61 	RPI_FIRMWARE_GET_TURBO =                              0x00030009,
62 	RPI_FIRMWARE_GET_MAX_TEMPERATURE =                    0x0003000a,
63 	RPI_FIRMWARE_GET_STC =                                0x0003000b,
64 	RPI_FIRMWARE_ALLOCATE_MEMORY =                        0x0003000c,
65 	RPI_FIRMWARE_LOCK_MEMORY =                            0x0003000d,
66 	RPI_FIRMWARE_UNLOCK_MEMORY =                          0x0003000e,
67 	RPI_FIRMWARE_RELEASE_MEMORY =                         0x0003000f,
68 	RPI_FIRMWARE_EXECUTE_CODE =                           0x00030010,
69 	RPI_FIRMWARE_EXECUTE_QPU =                            0x00030011,
70 	RPI_FIRMWARE_SET_ENABLE_QPU =                         0x00030012,
71 	RPI_FIRMWARE_GET_DISPMANX_RESOURCE_MEM_HANDLE =       0x00030014,
72 	RPI_FIRMWARE_GET_EDID_BLOCK =                         0x00030020,
73 	RPI_FIRMWARE_GET_CUSTOMER_OTP =                       0x00030021,
74 	RPI_FIRMWARE_GET_DOMAIN_STATE =                       0x00030030,
75 	RPI_FIRMWARE_GET_THROTTLED =                          0x00030046,
76 	RPI_FIRMWARE_GET_CLOCK_MEASURED =                     0x00030047,
77 	RPI_FIRMWARE_NOTIFY_REBOOT =                          0x00030048,
78 	RPI_FIRMWARE_SET_CLOCK_STATE =                        0x00038001,
79 	RPI_FIRMWARE_SET_CLOCK_RATE =                         0x00038002,
80 	RPI_FIRMWARE_SET_VOLTAGE =                            0x00038003,
81 	RPI_FIRMWARE_SET_TURBO =                              0x00038009,
82 	RPI_FIRMWARE_SET_CUSTOMER_OTP =                       0x00038021,
83 	RPI_FIRMWARE_SET_DOMAIN_STATE =                       0x00038030,
84 	RPI_FIRMWARE_GET_GPIO_STATE =                         0x00030041,
85 	RPI_FIRMWARE_SET_GPIO_STATE =                         0x00038041,
86 	RPI_FIRMWARE_SET_SDHOST_CLOCK =                       0x00038042,
87 	RPI_FIRMWARE_GET_GPIO_CONFIG =                        0x00030043,
88 	RPI_FIRMWARE_SET_GPIO_CONFIG =                        0x00038043,
89 	RPI_FIRMWARE_GET_PERIPH_REG =                         0x00030045,
90 	RPI_FIRMWARE_SET_PERIPH_REG =                         0x00038045,
91 	RPI_FIRMWARE_GET_POE_HAT_VAL =                        0x00030049,
92 	RPI_FIRMWARE_SET_POE_HAT_VAL =                        0x00030050,
93 	RPI_FIRMWARE_NOTIFY_XHCI_RESET =                      0x00030058,
94 
95 	/* Dispmanx TAGS */
96 	RPI_FIRMWARE_FRAMEBUFFER_ALLOCATE =                   0x00040001,
97 	RPI_FIRMWARE_FRAMEBUFFER_BLANK =                      0x00040002,
98 	RPI_FIRMWARE_FRAMEBUFFER_GET_PHYSICAL_WIDTH_HEIGHT =  0x00040003,
99 	RPI_FIRMWARE_FRAMEBUFFER_GET_VIRTUAL_WIDTH_HEIGHT =   0x00040004,
100 	RPI_FIRMWARE_FRAMEBUFFER_GET_DEPTH =                  0x00040005,
101 	RPI_FIRMWARE_FRAMEBUFFER_GET_PIXEL_ORDER =            0x00040006,
102 	RPI_FIRMWARE_FRAMEBUFFER_GET_ALPHA_MODE =             0x00040007,
103 	RPI_FIRMWARE_FRAMEBUFFER_GET_PITCH =                  0x00040008,
104 	RPI_FIRMWARE_FRAMEBUFFER_GET_VIRTUAL_OFFSET =         0x00040009,
105 	RPI_FIRMWARE_FRAMEBUFFER_GET_OVERSCAN =               0x0004000a,
106 	RPI_FIRMWARE_FRAMEBUFFER_GET_PALETTE =                0x0004000b,
107 	RPI_FIRMWARE_FRAMEBUFFER_GET_TOUCHBUF =               0x0004000f,
108 	RPI_FIRMWARE_FRAMEBUFFER_GET_GPIOVIRTBUF =            0x00040010,
109 	RPI_FIRMWARE_FRAMEBUFFER_RELEASE =                    0x00048001,
110 	RPI_FIRMWARE_FRAMEBUFFER_TEST_PHYSICAL_WIDTH_HEIGHT = 0x00044003,
111 	RPI_FIRMWARE_FRAMEBUFFER_TEST_VIRTUAL_WIDTH_HEIGHT =  0x00044004,
112 	RPI_FIRMWARE_FRAMEBUFFER_TEST_DEPTH =                 0x00044005,
113 	RPI_FIRMWARE_FRAMEBUFFER_TEST_PIXEL_ORDER =           0x00044006,
114 	RPI_FIRMWARE_FRAMEBUFFER_TEST_ALPHA_MODE =            0x00044007,
115 	RPI_FIRMWARE_FRAMEBUFFER_TEST_VIRTUAL_OFFSET =        0x00044009,
116 	RPI_FIRMWARE_FRAMEBUFFER_TEST_OVERSCAN =              0x0004400a,
117 	RPI_FIRMWARE_FRAMEBUFFER_TEST_PALETTE =               0x0004400b,
118 	RPI_FIRMWARE_FRAMEBUFFER_TEST_VSYNC =                 0x0004400e,
119 	RPI_FIRMWARE_FRAMEBUFFER_SET_PHYSICAL_WIDTH_HEIGHT =  0x00048003,
120 	RPI_FIRMWARE_FRAMEBUFFER_SET_VIRTUAL_WIDTH_HEIGHT =   0x00048004,
121 	RPI_FIRMWARE_FRAMEBUFFER_SET_DEPTH =                  0x00048005,
122 	RPI_FIRMWARE_FRAMEBUFFER_SET_PIXEL_ORDER =            0x00048006,
123 	RPI_FIRMWARE_FRAMEBUFFER_SET_ALPHA_MODE =             0x00048007,
124 	RPI_FIRMWARE_FRAMEBUFFER_SET_VIRTUAL_OFFSET =         0x00048009,
125 	RPI_FIRMWARE_FRAMEBUFFER_SET_OVERSCAN =               0x0004800a,
126 	RPI_FIRMWARE_FRAMEBUFFER_SET_PALETTE =                0x0004800b,
127 	RPI_FIRMWARE_FRAMEBUFFER_SET_TOUCHBUF =               0x0004801f,
128 	RPI_FIRMWARE_FRAMEBUFFER_SET_GPIOVIRTBUF =            0x00048020,
129 	RPI_FIRMWARE_FRAMEBUFFER_SET_VSYNC =                  0x0004800e,
130 	RPI_FIRMWARE_FRAMEBUFFER_SET_BACKLIGHT =              0x0004800f,
131 
132 	RPI_FIRMWARE_VCHIQ_INIT =                             0x00048010,
133 
134 	RPI_FIRMWARE_GET_COMMAND_LINE =                       0x00050001,
135 	RPI_FIRMWARE_GET_DMA_CHANNELS =                       0x00060001,
136 };
137 
138 #if IS_ENABLED(CONFIG_RASPBERRYPI_FIRMWARE)
139 int rpi_firmware_property(struct rpi_firmware *fw,
140 			  u32 tag, void *data, size_t len);
141 int rpi_firmware_property_list(struct rpi_firmware *fw,
142 			       void *data, size_t tag_size);
143 void rpi_firmware_put(struct rpi_firmware *fw);
144 struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node);
145 struct rpi_firmware *devm_rpi_firmware_get(struct device *dev,
146 					   struct device_node *firmware_node);
147 #else
148 static inline int rpi_firmware_property(struct rpi_firmware *fw, u32 tag,
149 					void *data, size_t len)
150 {
151 	return -ENOSYS;
152 }
153 
154 static inline int rpi_firmware_property_list(struct rpi_firmware *fw,
155 					     void *data, size_t tag_size)
156 {
157 	return -ENOSYS;
158 }
159 
160 static inline void rpi_firmware_put(struct rpi_firmware *fw) { }
161 static inline struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node)
162 {
163 	return NULL;
164 }
165 
166 static inline struct rpi_firmware *devm_rpi_firmware_get(struct device *dev,
167 					struct device_node *firmware_node)
168 {
169 	return NULL;
170 }
171 #endif
172 
173 #endif /* __SOC_RASPBERRY_FIRMWARE_H__ */
174