1 /* SPDX-License-Identifier: GPL-2.0-only */
2
3 #include <device/mmio.h>
4 #include <assert.h>
5 #include <gpio.h>
6 #include <spi_flash.h>
7 #include <soc/addressmap.h>
8 #include <soc/flash_controller.h>
9 #include <soc/spi.h>
10
11 struct mtk_spi_bus spi_bus[SPI_BUS_NUMBER] = {
12 {
13 .regs = (void *)SPI0_BASE,
14 .cs_gpio = GPIO(SPI_CSB),
15 },
16 {
17 .regs = (void *)SPI1_BASE,
18 .cs_gpio = GPIO(SPI1_CSB),
19 },
20 {
21 .regs = (void *)SPI2_BASE,
22 .cs_gpio = GPIO(EINT0),
23 },
24 {
25 .regs = (void *)SPI3_BASE,
26 .cs_gpio = GPIO(DPI_D9),
27 },
28 {
29 .regs = (void *)SPI4_BASE,
30 .cs_gpio = GPIO(DPI_D5),
31 },
32 {
33 .regs = (void *)SPI5_BASE,
34 .cs_gpio = GPIO(DPI_D1),
35 }
36 };
37
38 struct pad_func {
39 u8 pin_id;
40 u8 func;
41 };
42
43 #define PAD_FUNC(name, func) {PAD_##name##_ID, PAD_##name##_FUNC_##func}
44 #define PAD_FUNC_GPIO(name) {PAD_##name##_ID, 0}
45
46 static const struct pad_func pad0_funcs[SPI_BUS_NUMBER][4] = {
47 {
48 PAD_FUNC(SPI_MI, SPI0_MI),
49 PAD_FUNC_GPIO(SPI_CSB),
50 PAD_FUNC(SPI_MO, SPI0_MO),
51 PAD_FUNC(SPI_CLK, SPI0_CLK),
52 },
53 {
54 PAD_FUNC(SPI1_MI, SPI1_A_MI),
55 PAD_FUNC_GPIO(SPI1_CSB),
56 PAD_FUNC(SPI1_MO, SPI1_A_MO),
57 PAD_FUNC(SPI1_CLK, SPI1_A_CLK),
58 },
59 {
60 PAD_FUNC(KPCOL1, SPI2_MI),
61 PAD_FUNC_GPIO(EINT0),
62 PAD_FUNC(EINT1, SPI2_MO),
63 PAD_FUNC(EINT2, SPI2_CLK),
64 },
65 {
66 PAD_FUNC(DPI_D8, SPI3_MI),
67 PAD_FUNC_GPIO(DPI_D9),
68 PAD_FUNC(DPI_D10, SPI3_MO),
69 PAD_FUNC(DPI_D11, SPI3_CLK),
70 },
71 {
72 PAD_FUNC(DPI_D4, SPI4_MI),
73 PAD_FUNC_GPIO(DPI_D5),
74 PAD_FUNC(DPI_D6, SPI4_MO),
75 PAD_FUNC(DPI_D7, SPI4_CLK),
76 },
77 {
78 PAD_FUNC(DPI_D0, SPI5_MI),
79 PAD_FUNC_GPIO(DPI_D1),
80 PAD_FUNC(DPI_D2, SPI5_MO),
81 PAD_FUNC(DPI_D3, SPI5_CLK),
82 }
83 };
84
85 static const struct pad_func bus1_pad1_funcs[4] = {
86 PAD_FUNC(EINT7, SPI1_B_MI),
87 PAD_FUNC_GPIO(EINT8),
88 PAD_FUNC(EINT9, SPI1_B_MO),
89 PAD_FUNC(EINT10, SPI1_B_CLK),
90 };
91
mtk_spi_set_gpio_pinmux(unsigned int bus,enum spi_pad_mask pad_select)92 void mtk_spi_set_gpio_pinmux(unsigned int bus, enum spi_pad_mask pad_select)
93 {
94 assert(bus < SPI_BUS_NUMBER);
95 const struct pad_func *ptr;
96 if (pad_select == SPI_PAD0_MASK) {
97 ptr = pad0_funcs[bus];
98 } else {
99 assert(bus == 1 && pad_select == SPI_PAD1_MASK);
100 ptr = bus1_pad1_funcs;
101 }
102 for (int i = 0; i < 4; i++)
103 gpio_set_mode((gpio_t){.id = ptr[i].pin_id}, ptr[i].func);
104 }
105
106 const struct spi_ctrlr_buses spi_ctrlr_bus_map[] = {
107 {
108 .ctrlr = &spi_ctrlr,
109 .bus_start = 0,
110 .bus_end = SPI_BUS_NUMBER - 1,
111 },
112 };
113
114 const size_t spi_ctrlr_bus_map_count = ARRAY_SIZE(spi_ctrlr_bus_map);
115