1 /*
2 * KZM-ARM11-01 support
3 * Copyright (C) 2009 Yoichi Yuasa <yuasa@linux-mips.org>
4 *
5 * based on code for MX31ADS,
6 * Copyright (C) 2000 Deep Blue Solutions Ltd
7 * Copyright (C) 2002 Shane Nay (shane@minirl.com)
8 * Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 */
20
21 #include <linux/gpio.h>
22 #include <linux/init.h>
23 #include <linux/platform_device.h>
24 #include <linux/serial_8250.h>
25 #include <linux/smsc911x.h>
26 #include <linux/types.h>
27 #include <linux/regulator/machine.h>
28 #include <linux/regulator/fixed.h>
29
30 #include <asm/irq.h>
31 #include <asm/mach-types.h>
32 #include <asm/memory.h>
33 #include <asm/setup.h>
34 #include <asm/mach/arch.h>
35 #include <asm/mach/irq.h>
36 #include <asm/mach/map.h>
37 #include <asm/mach/time.h>
38
39 #include <mach/clock.h>
40 #include <mach/common.h>
41 #include <mach/hardware.h>
42 #include <mach/iomux-mx3.h>
43
44 #include "devices-imx31.h"
45
46 #define KZM_ARM11_IO_ADDRESS(x) (IOMEM( \
47 IMX_IO_P2V_MODULE(x, MX31_CS4) ?: \
48 IMX_IO_P2V_MODULE(x, MX31_CS5)) ?: \
49 MX31_IO_ADDRESS(x))
50
51 /*
52 * KZM-ARM11-01 Board Control Registers on FPGA
53 */
54 #define KZM_ARM11_CTL1 (MX31_CS4_BASE_ADDR + 0x1000)
55 #define KZM_ARM11_CTL2 (MX31_CS4_BASE_ADDR + 0x1001)
56 #define KZM_ARM11_RSW1 (MX31_CS4_BASE_ADDR + 0x1002)
57 #define KZM_ARM11_BACK_LIGHT (MX31_CS4_BASE_ADDR + 0x1004)
58 #define KZM_ARM11_FPGA_REV (MX31_CS4_BASE_ADDR + 0x1008)
59 #define KZM_ARM11_7SEG_LED (MX31_CS4_BASE_ADDR + 0x1010)
60 #define KZM_ARM11_LEDS (MX31_CS4_BASE_ADDR + 0x1020)
61 #define KZM_ARM11_DIPSW2 (MX31_CS4_BASE_ADDR + 0x1003)
62
63 /*
64 * External UART for touch panel on FPGA
65 */
66 #define KZM_ARM11_16550 (MX31_CS4_BASE_ADDR + 0x1050)
67
68 #if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
69 /*
70 * KZM-ARM11-01 has an external UART on FPGA
71 */
72 static struct plat_serial8250_port serial_platform_data[] = {
73 {
74 .membase = KZM_ARM11_IO_ADDRESS(KZM_ARM11_16550),
75 .mapbase = KZM_ARM11_16550,
76 .irq = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
77 .irqflags = IRQ_TYPE_EDGE_RISING,
78 .uartclk = 14745600,
79 .regshift = 0,
80 .iotype = UPIO_MEM,
81 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST |
82 UPF_BUGGY_UART,
83 },
84 {},
85 };
86
87 static struct resource serial8250_resources[] = {
88 {
89 .start = KZM_ARM11_16550,
90 .end = KZM_ARM11_16550 + 0x10,
91 .flags = IORESOURCE_MEM,
92 },
93 {
94 .start = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
95 .end = IOMUX_TO_IRQ(MX31_PIN_GPIO1_1),
96 .flags = IORESOURCE_IRQ,
97 },
98 };
99
100 static struct platform_device serial_device = {
101 .name = "serial8250",
102 .id = PLAT8250_DEV_PLATFORM,
103 .dev = {
104 .platform_data = serial_platform_data,
105 },
106 .num_resources = ARRAY_SIZE(serial8250_resources),
107 .resource = serial8250_resources,
108 };
109
kzm_init_ext_uart(void)110 static int __init kzm_init_ext_uart(void)
111 {
112 u8 tmp;
113
114 /*
115 * GPIO 1-1: external UART interrupt line
116 */
117 mxc_iomux_mode(IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO));
118 gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1), "ext-uart-int");
119 gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1));
120
121 /*
122 * Unmask UART interrupt
123 */
124 tmp = __raw_readb(KZM_ARM11_IO_ADDRESS(KZM_ARM11_CTL1));
125 tmp |= 0x2;
126 __raw_writeb(tmp, KZM_ARM11_IO_ADDRESS(KZM_ARM11_CTL1));
127
128 return platform_device_register(&serial_device);
129 }
130 #else
kzm_init_ext_uart(void)131 static inline int kzm_init_ext_uart(void)
132 {
133 return 0;
134 }
135 #endif
136
137 /*
138 * SMSC LAN9118
139 */
140 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
141 static struct smsc911x_platform_config kzm_smsc9118_config = {
142 .phy_interface = PHY_INTERFACE_MODE_MII,
143 .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
144 .irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL,
145 .flags = SMSC911X_USE_32BIT | SMSC911X_SAVE_MAC_ADDRESS,
146 };
147
148 static struct resource kzm_smsc9118_resources[] = {
149 {
150 .start = MX31_CS5_BASE_ADDR,
151 .end = MX31_CS5_BASE_ADDR + SZ_128K - 1,
152 .flags = IORESOURCE_MEM,
153 },
154 {
155 .start = IOMUX_TO_IRQ(MX31_PIN_GPIO1_2),
156 .end = IOMUX_TO_IRQ(MX31_PIN_GPIO1_2),
157 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
158 },
159 };
160
161 static struct platform_device kzm_smsc9118_device = {
162 .name = "smsc911x",
163 .id = -1,
164 .num_resources = ARRAY_SIZE(kzm_smsc9118_resources),
165 .resource = kzm_smsc9118_resources,
166 .dev = {
167 .platform_data = &kzm_smsc9118_config,
168 },
169 };
170
171 static struct regulator_consumer_supply dummy_supplies[] = {
172 REGULATOR_SUPPLY("vdd33a", "smsc911x"),
173 REGULATOR_SUPPLY("vddvario", "smsc911x"),
174 };
175
kzm_init_smsc9118(void)176 static int __init kzm_init_smsc9118(void)
177 {
178 /*
179 * GPIO 1-2: SMSC9118 interrupt line
180 */
181 mxc_iomux_mode(IOMUX_MODE(MX31_PIN_GPIO1_2, IOMUX_CONFIG_GPIO));
182 gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_2), "smsc9118-int");
183 gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_2));
184
185 regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
186
187 return platform_device_register(&kzm_smsc9118_device);
188 }
189 #else
kzm_init_smsc9118(void)190 static inline int kzm_init_smsc9118(void)
191 {
192 return 0;
193 }
194 #endif
195
196 #if defined(CONFIG_SERIAL_IMX) || defined(CONFIG_SERIAL_IMX_MODULE)
197 static const struct imxuart_platform_data uart_pdata __initconst = {
198 .flags = IMXUART_HAVE_RTSCTS,
199 };
200
kzm_init_imx_uart(void)201 static void __init kzm_init_imx_uart(void)
202 {
203 imx31_add_imx_uart0(&uart_pdata);
204 imx31_add_imx_uart1(&uart_pdata);
205 }
206 #else
kzm_init_imx_uart(void)207 static inline void kzm_init_imx_uart(void)
208 {
209 }
210 #endif
211
212 static int kzm_pins[] __initdata = {
213 MX31_PIN_CTS1__CTS1,
214 MX31_PIN_RTS1__RTS1,
215 MX31_PIN_TXD1__TXD1,
216 MX31_PIN_RXD1__RXD1,
217 MX31_PIN_DCD_DCE1__DCD_DCE1,
218 MX31_PIN_RI_DCE1__RI_DCE1,
219 MX31_PIN_DSR_DCE1__DSR_DCE1,
220 MX31_PIN_DTR_DCE1__DTR_DCE1,
221 MX31_PIN_CTS2__CTS2,
222 MX31_PIN_RTS2__RTS2,
223 MX31_PIN_TXD2__TXD2,
224 MX31_PIN_RXD2__RXD2,
225 MX31_PIN_DCD_DTE1__DCD_DTE2,
226 MX31_PIN_RI_DTE1__RI_DTE2,
227 MX31_PIN_DSR_DTE1__DSR_DTE2,
228 MX31_PIN_DTR_DTE1__DTR_DTE2,
229 };
230
231 /*
232 * Board specific initialization.
233 */
kzm_board_init(void)234 static void __init kzm_board_init(void)
235 {
236 imx31_soc_init();
237
238 mxc_iomux_setup_multiple_pins(kzm_pins,
239 ARRAY_SIZE(kzm_pins), "kzm");
240 kzm_init_ext_uart();
241 kzm_init_smsc9118();
242 kzm_init_imx_uart();
243
244 pr_info("Clock input source is 26MHz\n");
245 }
246
247 /*
248 * This structure defines static mappings for the kzm-arm11-01 board.
249 */
250 static struct map_desc kzm_io_desc[] __initdata = {
251 {
252 .virtual = MX31_CS4_BASE_ADDR_VIRT,
253 .pfn = __phys_to_pfn(MX31_CS4_BASE_ADDR),
254 .length = MX31_CS4_SIZE,
255 .type = MT_DEVICE
256 },
257 {
258 .virtual = MX31_CS5_BASE_ADDR_VIRT,
259 .pfn = __phys_to_pfn(MX31_CS5_BASE_ADDR),
260 .length = MX31_CS5_SIZE,
261 .type = MT_DEVICE
262 },
263 };
264
265 /*
266 * Set up static virtual mappings.
267 */
kzm_map_io(void)268 static void __init kzm_map_io(void)
269 {
270 mx31_map_io();
271 iotable_init(kzm_io_desc, ARRAY_SIZE(kzm_io_desc));
272 }
273
kzm_timer_init(void)274 static void __init kzm_timer_init(void)
275 {
276 mx31_clocks_init(26000000);
277 }
278
279 static struct sys_timer kzm_timer = {
280 .init = kzm_timer_init,
281 };
282
283 MACHINE_START(KZM_ARM11_01, "Kyoto Microcomputer Co., Ltd. KZM-ARM11-01")
284 .atag_offset = 0x100,
285 .map_io = kzm_map_io,
286 .init_early = imx31_init_early,
287 .init_irq = mx31_init_irq,
288 .handle_irq = imx31_handle_irq,
289 .timer = &kzm_timer,
290 .init_machine = kzm_board_init,
291 .restart = mxc_restart,
292 MACHINE_END
293