Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
ixdp425-setup.c
Go to the documentation of this file.
1 /*
2  * arch/arm/mach-ixp4xx/ixdp425-setup.c
3  *
4  * IXDP425/IXCDP1100 board-setup
5  *
6  * Copyright (C) 2003-2005 MontaVista Software, Inc.
7  *
8  * Author: Deepak Saxena <[email protected]>
9  */
10 
11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/device.h>
14 #include <linux/serial.h>
15 #include <linux/tty.h>
16 #include <linux/serial_8250.h>
17 #include <linux/i2c-gpio.h>
18 #include <linux/io.h>
19 #include <linux/mtd/mtd.h>
20 #include <linux/mtd/nand.h>
21 #include <linux/mtd/partitions.h>
22 #include <linux/delay.h>
23 #include <asm/types.h>
24 #include <asm/setup.h>
25 #include <asm/memory.h>
26 #include <mach/hardware.h>
27 #include <asm/mach-types.h>
28 #include <asm/irq.h>
29 #include <asm/mach/arch.h>
30 #include <asm/mach/flash.h>
31 
32 #define IXDP425_SDA_PIN 7
33 #define IXDP425_SCL_PIN 6
34 
35 /* NAND Flash pins */
36 #define IXDP425_NAND_NCE_PIN 12
37 
38 #define IXDP425_NAND_CMD_BYTE 0x01
39 #define IXDP425_NAND_ADDR_BYTE 0x02
40 
41 static struct flash_platform_data ixdp425_flash_data = {
42  .map_name = "cfi_probe",
43  .width = 2,
44 };
45 
46 static struct resource ixdp425_flash_resource = {
47  .flags = IORESOURCE_MEM,
48 };
49 
50 static struct platform_device ixdp425_flash = {
51  .name = "IXP4XX-Flash",
52  .id = 0,
53  .dev = {
54  .platform_data = &ixdp425_flash_data,
55  },
56  .num_resources = 1,
57  .resource = &ixdp425_flash_resource,
58 };
59 
60 #if defined(CONFIG_MTD_NAND_PLATFORM) || \
61  defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
62 
63 static struct mtd_partition ixdp425_partitions[] = {
64  {
65  .name = "ixp400 NAND FS 0",
66  .offset = 0,
67  .size = SZ_8M
68  }, {
69  .name = "ixp400 NAND FS 1",
70  .offset = MTDPART_OFS_APPEND,
71  .size = MTDPART_SIZ_FULL
72  },
73 };
74 
75 static void
76 ixdp425_flash_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
77 {
78  struct nand_chip *this = mtd->priv;
79  int offset = (int)this->priv;
80 
81  if (ctrl & NAND_CTRL_CHANGE) {
82  if (ctrl & NAND_NCE) {
83  gpio_line_set(IXDP425_NAND_NCE_PIN, IXP4XX_GPIO_LOW);
84  udelay(5);
85  } else
86  gpio_line_set(IXDP425_NAND_NCE_PIN, IXP4XX_GPIO_HIGH);
87 
88  offset = (ctrl & NAND_CLE) ? IXDP425_NAND_CMD_BYTE : 0;
89  offset |= (ctrl & NAND_ALE) ? IXDP425_NAND_ADDR_BYTE : 0;
90  this->priv = (void *)offset;
91  }
92 
93  if (cmd != NAND_CMD_NONE)
94  writeb(cmd, this->IO_ADDR_W + offset);
95 }
96 
97 static struct platform_nand_data ixdp425_flash_nand_data = {
98  .chip = {
99  .nr_chips = 1,
100  .chip_delay = 30,
101  .partitions = ixdp425_partitions,
102  .nr_partitions = ARRAY_SIZE(ixdp425_partitions),
103  },
104  .ctrl = {
105  .cmd_ctrl = ixdp425_flash_nand_cmd_ctrl
106  }
107 };
108 
109 static struct resource ixdp425_flash_nand_resource = {
110  .flags = IORESOURCE_MEM,
111 };
112 
113 static struct platform_device ixdp425_flash_nand = {
114  .name = "gen_nand",
115  .id = -1,
116  .dev = {
117  .platform_data = &ixdp425_flash_nand_data,
118  },
119  .num_resources = 1,
120  .resource = &ixdp425_flash_nand_resource,
121 };
122 #endif /* CONFIG_MTD_NAND_PLATFORM */
123 
124 static struct i2c_gpio_platform_data ixdp425_i2c_gpio_data = {
125  .sda_pin = IXDP425_SDA_PIN,
126  .scl_pin = IXDP425_SCL_PIN,
127 };
128 
129 static struct platform_device ixdp425_i2c_gpio = {
130  .name = "i2c-gpio",
131  .id = 0,
132  .dev = {
133  .platform_data = &ixdp425_i2c_gpio_data,
134  },
135 };
136 
137 static struct resource ixdp425_uart_resources[] = {
138  {
139  .start = IXP4XX_UART1_BASE_PHYS,
140  .end = IXP4XX_UART1_BASE_PHYS + 0x0fff,
141  .flags = IORESOURCE_MEM
142  },
143  {
144  .start = IXP4XX_UART2_BASE_PHYS,
145  .end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
146  .flags = IORESOURCE_MEM
147  }
148 };
149 
150 static struct plat_serial8250_port ixdp425_uart_data[] = {
151  {
152  .mapbase = IXP4XX_UART1_BASE_PHYS,
153  .membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
154  .irq = IRQ_IXP4XX_UART1,
155  .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
156  .iotype = UPIO_MEM,
157  .regshift = 2,
158  .uartclk = IXP4XX_UART_XTAL,
159  },
160  {
161  .mapbase = IXP4XX_UART2_BASE_PHYS,
162  .membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
163  .irq = IRQ_IXP4XX_UART2,
164  .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
165  .iotype = UPIO_MEM,
166  .regshift = 2,
167  .uartclk = IXP4XX_UART_XTAL,
168  },
169  { },
170 };
171 
172 static struct platform_device ixdp425_uart = {
173  .name = "serial8250",
174  .id = PLAT8250_DEV_PLATFORM,
175  .dev.platform_data = ixdp425_uart_data,
176  .num_resources = 2,
177  .resource = ixdp425_uart_resources
178 };
179 
180 /* Built-in 10/100 Ethernet MAC interfaces */
181 static struct eth_plat_info ixdp425_plat_eth[] = {
182  {
183  .phy = 0,
184  .rxq = 3,
185  .txreadyq = 20,
186  }, {
187  .phy = 1,
188  .rxq = 4,
189  .txreadyq = 21,
190  }
191 };
192 
193 static struct platform_device ixdp425_eth[] = {
194  {
195  .name = "ixp4xx_eth",
196  .id = IXP4XX_ETH_NPEB,
197  .dev.platform_data = ixdp425_plat_eth,
198  }, {
199  .name = "ixp4xx_eth",
200  .id = IXP4XX_ETH_NPEC,
201  .dev.platform_data = ixdp425_plat_eth + 1,
202  }
203 };
204 
205 static struct platform_device *ixdp425_devices[] __initdata = {
206  &ixdp425_i2c_gpio,
207  &ixdp425_flash,
208 #if defined(CONFIG_MTD_NAND_PLATFORM) || \
209  defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
210  &ixdp425_flash_nand,
211 #endif
212  &ixdp425_uart,
213  &ixdp425_eth[0],
214  &ixdp425_eth[1],
215 };
216 
217 static void __init ixdp425_init(void)
218 {
219  ixp4xx_sys_init();
220 
221  ixdp425_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
222  ixdp425_flash_resource.end =
223  IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
224 
225 #if defined(CONFIG_MTD_NAND_PLATFORM) || \
226  defined(CONFIG_MTD_NAND_PLATFORM_MODULE)
227  ixdp425_flash_nand_resource.start = IXP4XX_EXP_BUS_BASE(3),
228  ixdp425_flash_nand_resource.end = IXP4XX_EXP_BUS_BASE(3) + 0x10 - 1;
229 
230  gpio_line_config(IXDP425_NAND_NCE_PIN, IXP4XX_GPIO_OUT);
231 
232  /* Configure expansion bus for NAND Flash */
233  *IXP4XX_EXP_CS3 = IXP4XX_EXP_BUS_CS_EN |
234  IXP4XX_EXP_BUS_STROBE_T(1) | /* extend by 1 clock */
235  IXP4XX_EXP_BUS_CYCLES(0) | /* Intel cycles */
236  IXP4XX_EXP_BUS_SIZE(0) | /* 512bytes addr space*/
237  IXP4XX_EXP_BUS_WR_EN |
238  IXP4XX_EXP_BUS_BYTE_EN; /* 8 bit data bus */
239 #endif
240 
241  if (cpu_is_ixp43x()) {
242  ixdp425_uart.num_resources = 1;
243  ixdp425_uart_data[1].flags = 0;
244  }
245 
246  platform_add_devices(ixdp425_devices, ARRAY_SIZE(ixdp425_devices));
247 }
248 
249 #ifdef CONFIG_ARCH_IXDP425
250 MACHINE_START(IXDP425, "Intel IXDP425 Development Platform")
251  /* Maintainer: MontaVista Software, Inc. */
252  .map_io = ixp4xx_map_io,
253  .init_early = ixp4xx_init_early,
254  .init_irq = ixp4xx_init_irq,
255  .timer = &ixp4xx_timer,
256  .atag_offset = 0x100,
257  .init_machine = ixdp425_init,
258 #if defined(CONFIG_PCI)
259  .dma_zone_size = SZ_64M,
260 #endif
261  .restart = ixp4xx_restart,
262 MACHINE_END
263 #endif
264 
265 #ifdef CONFIG_MACH_IXDP465
266 MACHINE_START(IXDP465, "Intel IXDP465 Development Platform")
267  /* Maintainer: MontaVista Software, Inc. */
268  .map_io = ixp4xx_map_io,
269  .init_early = ixp4xx_init_early,
270  .init_irq = ixp4xx_init_irq,
271  .timer = &ixp4xx_timer,
272  .atag_offset = 0x100,
273  .init_machine = ixdp425_init,
274 #if defined(CONFIG_PCI)
275  .dma_zone_size = SZ_64M,
276 #endif
277 MACHINE_END
278 #endif
279 
280 #ifdef CONFIG_ARCH_PRPMC1100
281 MACHINE_START(IXCDP1100, "Intel IXCDP1100 Development Platform")
282  /* Maintainer: MontaVista Software, Inc. */
283  .map_io = ixp4xx_map_io,
284  .init_early = ixp4xx_init_early,
285  .init_irq = ixp4xx_init_irq,
286  .timer = &ixp4xx_timer,
287  .atag_offset = 0x100,
288  .init_machine = ixdp425_init,
289 #if defined(CONFIG_PCI)
290  .dma_zone_size = SZ_64M,
291 #endif
292 MACHINE_END
293 #endif
294 
295 #ifdef CONFIG_MACH_KIXRP435
296 MACHINE_START(KIXRP435, "Intel KIXRP435 Reference Platform")
297  /* Maintainer: MontaVista Software, Inc. */
298  .map_io = ixp4xx_map_io,
299  .init_early = ixp4xx_init_early,
300  .init_irq = ixp4xx_init_irq,
301  .timer = &ixp4xx_timer,
302  .atag_offset = 0x100,
303  .init_machine = ixdp425_init,
304 #if defined(CONFIG_PCI)
305  .dma_zone_size = SZ_64M,
306 #endif
307 MACHINE_END
308 #endif
Generated on Thu Jan 10 2013 12:59:32 for Linux Kernel by   doxygen 1.8.2