summaryrefslogtreecommitdiffstats
path: root/kernel/arch/arm/mach-spear/spear320.c
blob: d45d751926c50e344cf168002eecb185eb82a511 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
/*
 * arch/arm/mach-spear3xx/spear320.c
 *
 * SPEAr320 machine source file
 *
 * Copyright (C) 2009-2012 ST Microelectronics
 * Viresh Kumar <vireshk@kernel.org>
 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2. This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */

#define pr_fmt(fmt) "SPEAr320: " fmt

#include <linux/amba/pl022.h>
#include <linux/amba/pl08x.h>
#include <linux/amba/serial.h>
#include <linux/of_platform.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include "generic.h"
#include <mach/spear.h>

#define SPEAR320_UART1_BASE		UL(0xA3000000)
#define SPEAR320_UART2_BASE		UL(0xA4000000)
#define SPEAR320_SSP0_BASE		UL(0xA5000000)
#define SPEAR320_SSP1_BASE		UL(0xA6000000)

/* DMAC platform data's slave info */
struct pl08x_channel_data spear320_dma_info[] = {
	{
		.bus_id = "uart0_rx",
		.min_signal = 2,
		.max_signal = 2,
		.muxval = 0,
		.periph_buses = PL08X_AHB1,
	}, {
		.bus_id = "uart0_tx",
		.min_signal = 3,
		.max_signal = 3,
		.muxval = 0,
		.periph_buses = PL08X_AHB1,
	}, {
		.bus_id = "ssp0_rx",
		.min_signal = 8,
		.max_signal = 8,
		.muxval = 0,
		.periph_buses = PL08X_AHB1,
	}, {
		.bus_id = "ssp0_tx",
		.min_signal = 9,
		.max_signal = 9,
		.muxval = 0,
		.periph_buses = PL08X_AHB1,
	}, {
		.bus_id = "i2c0_rx",
		.min_signal = 10,
		.max_signal = 10,
		.muxval = 0,
		.periph_buses = PL08X_AHB1,
	}, {
		.bus_id = "i2c0_tx",
		.min_signal = 11,
		.max_signal = 11,
		.muxval = 0,
		.periph_buses = PL08X_AHB1,
	}, {
		.bus_id = "irda",
		.min_signal = 12,
		.max_signal = 12,
		.muxval = 0,
		.periph_buses = PL08X_AHB1,
	}, {
		.bus_id = "adc",
		.min_signal = 13,
		.max_signal = 13,
		.muxval = 0,
		.periph_buses = PL08X_AHB1,
	}, {
		.bus_id = "to_jpeg",
		.min_signal = 14,
		.max_signal = 14,
		.muxval = 0,
		.periph_buses = PL08X_AHB1,
	}, {
		.bus_id = "from_jpeg",
		.min_signal = 15,
		.max_signal = 15,
		.muxval = 0,
		.periph_buses = PL08X_AHB1,
	}, {
		.bus_id = "ssp1_rx",
		.min_signal = 0,
		.max_signal = 0,
		.muxval = 1,
		.periph_buses = PL08X_AHB2,
	}, {
		.bus_id = "ssp1_tx",
		.min_signal = 1,
		.max_signal = 1,
		.muxval = 1,
		.periph_buses = PL08X_AHB2,
	}, {
		.bus_id = "ssp2_rx",
		.min_signal = 2,
		.max_signal = 2,
		.muxval = 1,
		.periph_buses = PL08X_AHB2,
	}, {
		.bus_id = "ssp2_tx",
		.min_signal = 3,
		.max_signal = 3,
		.muxval = 1,
		.periph_buses = PL08X_AHB2,
	}, {
		.bus_id = "uart1_rx",
		.min_signal = 4,
		.max_signal = 4,
		.muxval = 1,
		.periph_buses = PL08X_AHB2,
	}, {
		.bus_id = "uart1_tx",
		.min_signal = 5,
		.max_signal = 5,
		.muxval = 1,
		.periph_buses = PL08X_AHB2,
	}, {
		.bus_id = "uart2_rx",
		.min_signal = 6,
		.max_signal = 6,
		.muxval = 1,
		.periph_buses = PL08X_AHB2,
	}, {
		.bus_id = "uart2_tx",
		.min_signal = 7,
		.max_signal = 7,
		.muxval = 1,
		.periph_buses = PL08X_AHB2,
	}, {
		.bus_id = "i2c1_rx",
		.min_signal = 8,
		.max_signal = 8,
		.muxval = 1,
		.periph_buses = PL08X_AHB2,
	}, {
		.bus_id = "i2c1_tx",
		.min_signal = 9,
		.max_signal = 9,
		.muxval = 1,
		.periph_buses = PL08X_AHB2,
	}, {
		.bus_id = "i2c2_rx",
		.min_signal = 10,
		.max_signal = 10,
		.muxval = 1,
		.periph_buses = PL08X_AHB2,
	}, {
		.bus_id = "i2c2_tx",
		.min_signal = 11,
		.max_signal = 11,
		.muxval = 1,
		.periph_buses = PL08X_AHB2,
	}, {
		.bus_id = "i2s_rx",
		.min_signal = 12,
		.max_signal = 12,
		.muxval = 1,
		.periph_buses = PL08X_AHB2,
	}, {
		.bus_id = "i2s_tx",
		.min_signal = 13,
		.max_signal = 13,
		.muxval = 1,
		.periph_buses = PL08X_AHB2,
	}, {
		.bus_id = "rs485_rx",
		.min_signal = 14,
		.max_signal = 14,
		.muxval = 1,
		.periph_buses = PL08X_AHB2,
	}, {
		.bus_id = "rs485_tx",
		.min_signal = 15,
		.max_signal = 15,
		.muxval = 1,
		.periph_buses = PL08X_AHB2,
	},
};

static struct pl022_ssp_controller spear320_ssp_data[] = {
	{
		.bus_id = 1,
		.enable_dma = 1,
		.dma_filter = pl08x_filter_id,
		.dma_tx_param = "ssp1_tx",
		.dma_rx_param = "ssp1_rx",
		.num_chipselect = 2,
	}, {
		.bus_id = 2,
		.enable_dma = 1,
		.dma_filter = pl08x_filter_id,
		.dma_tx_param = "ssp2_tx",
		.dma_rx_param = "ssp2_rx",
		.num_chipselect = 2,
	}
};

static struct amba_pl011_data spear320_uart_data[] = {
	{
		.dma_filter = pl08x_filter_id,
		.dma_tx_param = "uart1_tx",
		.dma_rx_param = "uart1_rx",
	}, {
		.dma_filter = pl08x_filter_id,
		.dma_tx_param = "uart2_tx",
		.dma_rx_param = "uart2_rx",
	},
};

/* Add SPEAr310 auxdata to pass platform data */
static struct of_dev_auxdata spear320_auxdata_lookup[] __initdata = {
	OF_DEV_AUXDATA("arm,pl022", SPEAR3XX_ICM1_SSP_BASE, NULL,
			&pl022_plat_data),
	OF_DEV_AUXDATA("arm,pl080", SPEAR_ICM3_DMA_BASE, NULL,
			&pl080_plat_data),
	OF_DEV_AUXDATA("arm,pl022", SPEAR320_SSP0_BASE, NULL,
			&spear320_ssp_data[0]),
	OF_DEV_AUXDATA("arm,pl022", SPEAR320_SSP1_BASE, NULL,
			&spear320_ssp_data[1]),
	OF_DEV_AUXDATA("arm,pl011", SPEAR320_UART1_BASE, NULL,
			&spear320_uart_data[0]),
	OF_DEV_AUXDATA("arm,pl011", SPEAR320_UART2_BASE, NULL,
			&spear320_uart_data[1]),
	{}
};

static void __init spear320_dt_init(void)
{
	pl080_plat_data.slave_channels = spear320_dma_info;
	pl080_plat_data.num_slave_channels = ARRAY_SIZE(spear320_dma_info);

	of_platform_populate(NULL, of_default_bus_match_table,
			spear320_auxdata_lookup, NULL);
}

static const char * const spear320_dt_board_compat[] = {
	"st,spear320",
	"st,spear320-evb",
	"st,spear320-hmi",
	NULL,
};

struct map_desc spear320_io_desc[] __initdata = {
	{
		.virtual	= (unsigned long)VA_SPEAR320_SOC_CONFIG_BASE,
		.pfn		= __phys_to_pfn(SPEAR320_SOC_CONFIG_BASE),
		.length		= SZ_16M,
		.type		= MT_DEVICE
	},
};

static void __init spear320_map_io(void)
{
	iotable_init(spear320_io_desc, ARRAY_SIZE(spear320_io_desc));
	spear3xx_map_io();
}

DT_MACHINE_START(SPEAR320_DT, "ST SPEAr320 SoC with Flattened Device Tree")
	.map_io		=	spear320_map_io,
	.init_time	=	spear3xx_timer_init,
	.init_machine	=	spear320_dt_init,
	.restart	=	spear_restart,
	.dt_compat	=	spear320_dt_board_compat,
MACHINE_END