1 /* SPDX-License-Identifier: GPL-2.0-only OR MIT */
2
3 #include <assert.h>
4 #include <device/mmio.h>
5 #include <gpio.h>
6 #include <soc/addressmap.h>
7 #include <soc/flash_controller_common.h>
8 #include <soc/spi.h>
9
10 struct mtk_spi_bus spi_bus[SPI_BUS_NUMBER] = {
11 {
12 .regs = (void *)SPI0_BASE,
13 .cs_gpio = GPIO(SPIM0_CSB),
14 },
15 {
16 .regs = (void *)SPI1_BASE,
17 .cs_gpio = GPIO(SPIM1_CSB),
18 },
19 {
20 .regs = (void *)SPI2_BASE,
21 .cs_gpio = GPIO(SPIM2_CSB),
22 },
23 {
24 .regs = (void *)SPI3_BASE,
25 .cs_gpio = GPIO(PWRAP_SPI_CSN),
26 },
27 {
28 .regs = (void *)SPI4_BASE,
29 .cs_gpio = GPIO(DGI_D2),
30 },
31 {
32 .regs = (void *)SPI5_BASE,
33 .cs_gpio = GPIO(DGI_D6),
34 },
35 };
36
37 struct pad_func {
38 u8 pin_id;
39 u8 func;
40 };
41
42 #define PAD_FUNC(name, func) {PAD_##name##_ID, PAD_##name##_FUNC_##func}
43 #define PAD_FUNC_GPIO(name) {PAD_##name##_ID, 0}
44
45 static const struct pad_func pad0_funcs[SPI_BUS_NUMBER][4] = {
46 {
47 PAD_FUNC(SPIM0_MI, SPIM0_MI),
48 PAD_FUNC_GPIO(SPIM0_CSB),
49 PAD_FUNC(SPIM0_MO, SPIM0_MO),
50 PAD_FUNC(SPIM0_CLK, SPIM0_CLK),
51 },
52 {
53 PAD_FUNC(SPIM1_MI, SPIM1_MI),
54 PAD_FUNC_GPIO(SPIM1_CSB),
55 PAD_FUNC(SPIM1_MO, SPIM1_MO),
56 PAD_FUNC(SPIM1_CLK, SPIM1_CLK),
57 },
58 {
59 PAD_FUNC(SPIM2_MI, SPIM2_MI),
60 PAD_FUNC_GPIO(SPIM2_CSB),
61 PAD_FUNC(SPIM2_MO, SPIM2_MO),
62 PAD_FUNC(SPIM2_CLK, SPIM2_CLK),
63 },
64 {
65 PAD_FUNC(PWRAP_SPI_MI, SPIM3_MI),
66 PAD_FUNC_GPIO(PWRAP_SPI_CSN),
67 PAD_FUNC(PWRAP_SPI_MO, SPIM3_MO),
68 PAD_FUNC(PWRAP_SPI_CK, SPIM3_CLK),
69 },
70 {
71 PAD_FUNC(DGI_D3, SPIM4_MI),
72 PAD_FUNC_GPIO(DGI_D2),
73 PAD_FUNC(DGI_D1, SPIM4_MO),
74 PAD_FUNC(DGI_D0, SPIM4_CLK),
75 },
76 {
77 PAD_FUNC(DGI_D7, SPIM5_MI),
78 PAD_FUNC_GPIO(DGI_D6),
79 PAD_FUNC(DGI_D5, SPIM5_MO),
80 PAD_FUNC(DGI_D4, SPIM5_CLK),
81 },
82 };
83
mtk_spi_set_gpio_pinmux(unsigned int bus,enum spi_pad_mask pad_select)84 void mtk_spi_set_gpio_pinmux(unsigned int bus, enum spi_pad_mask pad_select)
85 {
86 assert(bus < SPI_BUS_NUMBER);
87 assert(pad_select == SPI_PAD0_MASK);
88 const struct pad_func *ptr = NULL;
89
90 ptr = pad0_funcs[bus];
91 for (int i = 0; i < 4; i++)
92 gpio_set_mode((gpio_t){.id = ptr[i].pin_id}, ptr[i].func);
93 }
94
95 static const struct spi_ctrlr spi_flash_ctrlr = {
96 .max_xfer_size = 65535,
97 .flash_probe = mtk_spi_flash_probe,
98 };
99
100 const struct spi_ctrlr_buses spi_ctrlr_bus_map[] = {
101 {
102 .ctrlr = &spi_ctrlr,
103 .bus_start = 0,
104 .bus_end = SPI_BUS_NUMBER - 1,
105 },
106 {
107 .ctrlr = &spi_flash_ctrlr,
108 .bus_start = CONFIG_BOOT_DEVICE_SPI_FLASH_BUS,
109 .bus_end = CONFIG_BOOT_DEVICE_SPI_FLASH_BUS,
110 },
111 };
112
113 const size_t spi_ctrlr_bus_map_count = ARRAY_SIZE(spi_ctrlr_bus_map);
114