1 /* arch/arm/mach-lh7a40x/arch-lpd7a40x.c
3 * Copyright (C) 2004 Logic Product Development
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * version 2 as published by the Free Software Foundation.
11 #include <linux/tty.h>
12 #include <linux/init.h>
13 #include <linux/device.h>
14 #include <linux/interrupt.h>
16 #include <asm/hardware.h>
17 #include <asm/setup.h>
18 #include <asm/mach-types.h>
19 #include <asm/mach/arch.h>
21 #include <asm/mach/irq.h>
22 #include <asm/mach/map.h>
26 static struct resource smc91x_resources[] = {
29 .end = CPLD00_PHYS + CPLD00_SIZE - 1, /* Only needs 16B */
30 .flags = IORESOURCE_MEM,
34 .start = IRQ_LPD7A40X_ETH_INT,
35 .end = IRQ_LPD7A40X_ETH_INT,
36 .flags = IORESOURCE_IRQ,
41 static struct platform_device smc91x_device = {
44 .num_resources = ARRAY_SIZE(smc91x_resources),
45 .resource = smc91x_resources,
48 static struct resource lh7a40x_usbclient_resources[] = {
51 .end = (USB_PHYS + 0xFF),
52 .flags = IORESOURCE_MEM,
57 .flags = IORESOURCE_IRQ,
61 static u64 lh7a40x_usbclient_dma_mask = 0xffffffffUL;
63 static struct platform_device lh7a40x_usbclient_device = {
64 .name = "lh7a40x_udc",
67 .dma_mask = &lh7a40x_usbclient_dma_mask,
68 .coherent_dma_mask = 0xffffffffUL,
70 .num_resources = ARRAY_SIZE (lh7a40x_usbclient_resources),
71 .resource = lh7a40x_usbclient_resources,
74 #if defined (CONFIG_ARCH_LH7A404)
76 static struct resource lh7a404_usbhost_resources [] = {
79 .end = (USBH_PHYS + 0xFF),
80 .flags = IORESOURCE_MEM,
85 .flags = IORESOURCE_IRQ,
89 static u64 lh7a404_usbhost_dma_mask = 0xffffffffUL;
91 static struct platform_device lh7a404_usbhost_device = {
92 .name = "lh7a404-ohci",
95 .dma_mask = &lh7a404_usbhost_dma_mask,
96 .coherent_dma_mask = 0xffffffffUL,
98 .num_resources = ARRAY_SIZE (lh7a404_usbhost_resources),
99 .resource = lh7a404_usbhost_resources,
104 static struct platform_device *lpd7a40x_devs[] __initdata = {
106 &lh7a40x_usbclient_device,
107 #if defined (CONFIG_ARCH_LH7A404)
108 &lh7a404_usbhost_device,
112 extern void lpd7a400_map_io (void);
114 static void __init lpd7a40x_init (void)
116 CPLD_CONTROL |= (1<<6); /* Mask USB1 connection IRQ */
118 | (1<<1) /* Disable LCD */
119 | (1<<0) /* Enable WLAN */
122 platform_add_devices (lpd7a40x_devs, ARRAY_SIZE (lpd7a40x_devs));
125 static void lh7a40x_ack_cpld_irq (u32 irq)
127 /* CPLD doesn't have ack capability */
130 static void lh7a40x_mask_cpld_irq (u32 irq)
133 case IRQ_LPD7A40X_ETH_INT:
134 CPLD_INTERRUPTS = CPLD_INTERRUPTS | 0x4;
136 case IRQ_LPD7A400_TS:
137 CPLD_INTERRUPTS = CPLD_INTERRUPTS | 0x8;
142 static void lh7a40x_unmask_cpld_irq (u32 irq)
145 case IRQ_LPD7A40X_ETH_INT:
146 CPLD_INTERRUPTS = CPLD_INTERRUPTS & ~ 0x4;
148 case IRQ_LPD7A400_TS:
149 CPLD_INTERRUPTS = CPLD_INTERRUPTS & ~ 0x8;
154 static struct irqchip lpd7a40x_cpld_chip = {
155 .ack = lh7a40x_ack_cpld_irq,
156 .mask = lh7a40x_mask_cpld_irq,
157 .unmask = lh7a40x_unmask_cpld_irq,
160 static void lpd7a40x_cpld_handler (unsigned int irq, struct irqdesc *desc,
161 struct pt_regs *regs)
163 unsigned int mask = CPLD_INTERRUPTS;
165 desc->chip->ack (irq);
167 if ((mask & 0x1) == 0) /* WLAN */
168 IRQ_DISPATCH (IRQ_LPD7A40X_ETH_INT);
170 if ((mask & 0x2) == 0) /* Touch */
171 IRQ_DISPATCH (IRQ_LPD7A400_TS);
173 desc->chip->unmask (irq); /* Level-triggered need this */
177 void __init lh7a40x_init_board_irq (void)
181 /* Rev A (v2.8): PF0, PF1, PF2, and PF3 are available IRQs.
182 PF7 supports the CPLD.
183 Rev B (v3.4): PF0, PF1, and PF2 are available IRQs.
184 PF3 supports the CPLD.
185 (Some) LPD7A404 prerelease boards report a version
186 number of 0x16, but we force an override since the
187 hardware is of the newer variety.
190 unsigned char cpld_version = CPLD_REVISION;
191 int pinCPLD = (cpld_version == 0x28) ? 7 : 3;
193 #if defined CONFIG_MACH_LPD7A404
194 cpld_version = 0x34; /* Coerce LPD7A404 to RevB */
197 /* First, configure user controlled GPIOF interrupts */
199 GPIO_PFDD &= ~0x0f; /* PF0-3 are inputs */
200 GPIO_INTTYPE1 &= ~0x0f; /* PF0-3 are level triggered */
201 GPIO_INTTYPE2 &= ~0x0f; /* PF0-3 are active low */
203 GPIO_GPIOFINTEN |= 0x0f; /* Enable PF0, PF1, PF2, and PF3 IRQs */
205 /* Then, configure CPLD interrupt */
207 CPLD_INTERRUPTS = 0x9c; /* Disable all CPLD interrupts */
208 GPIO_PFDD &= ~(1 << pinCPLD); /* Make input */
209 GPIO_INTTYPE1 |= (1 << pinCPLD); /* Edge triggered */
210 GPIO_INTTYPE2 &= ~(1 << pinCPLD); /* Active low */
212 GPIO_GPIOFINTEN |= (1 << pinCPLD); /* Enable */
214 /* Cascade CPLD interrupts */
216 for (irq = IRQ_BOARD_START;
217 irq < IRQ_BOARD_START + NR_IRQ_BOARD; ++irq) {
218 set_irq_chip (irq, &lpd7a40x_cpld_chip);
219 set_irq_handler (irq, do_edge_IRQ);
220 set_irq_flags (irq, IRQF_VALID);
223 set_irq_chained_handler ((cpld_version == 0x28)
226 lpd7a40x_cpld_handler);
229 static struct map_desc lpd7a400_io_desc[] __initdata = {
230 { IO_VIRT, IO_PHYS, IO_SIZE, MT_DEVICE },
231 /* Mapping added to work around chip select problems */
232 { IOBARRIER_VIRT, IOBARRIER_PHYS, IOBARRIER_SIZE, MT_DEVICE },
233 { CF_VIRT, CF_PHYS, CF_SIZE, MT_DEVICE },
234 /* This mapping is redundant since the smc driver performs another. */
235 /* { CPLD00_VIRT, CPLD00_PHYS, CPLD00_SIZE, MT_DEVICE }, */
236 { CPLD02_VIRT, CPLD02_PHYS, CPLD02_SIZE, MT_DEVICE },
237 { CPLD06_VIRT, CPLD06_PHYS, CPLD06_SIZE, MT_DEVICE },
238 { CPLD08_VIRT, CPLD08_PHYS, CPLD08_SIZE, MT_DEVICE },
239 { CPLD0C_VIRT, CPLD0C_PHYS, CPLD0C_SIZE, MT_DEVICE },
240 { CPLD0E_VIRT, CPLD0E_PHYS, CPLD0E_SIZE, MT_DEVICE },
241 { CPLD10_VIRT, CPLD10_PHYS, CPLD10_SIZE, MT_DEVICE },
242 { CPLD12_VIRT, CPLD12_PHYS, CPLD12_SIZE, MT_DEVICE },
243 { CPLD14_VIRT, CPLD14_PHYS, CPLD14_SIZE, MT_DEVICE },
244 { CPLD16_VIRT, CPLD16_PHYS, CPLD16_SIZE, MT_DEVICE },
245 { CPLD18_VIRT, CPLD18_PHYS, CPLD18_SIZE, MT_DEVICE },
246 { CPLD1A_VIRT, CPLD1A_PHYS, CPLD1A_SIZE, MT_DEVICE },
250 lpd7a400_map_io(void)
252 iotable_init (lpd7a400_io_desc, ARRAY_SIZE (lpd7a400_io_desc));
254 /* Fixup (improve) Static Memory Controller settings */
255 SMC_BCR0 = 0x200039af; /* Boot Flash */
256 SMC_BCR6 = 0x1000fbe0; /* CPLD */
257 SMC_BCR7 = 0x1000b2c2; /* Compact Flash */
260 #ifdef CONFIG_MACH_LPD7A400
262 MACHINE_START (LPD7A400, "Logic Product Development LPD7A400-10")
263 /* Maintainer: Marc Singer */
264 .phys_ram = 0xc0000000,
265 .phys_io = 0x80000000,
266 .io_pg_offst = ((io_p2v (0x80000000))>>18) & 0xfffc,
267 .boot_params = 0xc0000100,
268 .map_io = lpd7a400_map_io,
269 .init_irq = lh7a400_init_irq,
270 .timer = &lh7a40x_timer,
271 .init_machine = lpd7a40x_init,
276 #ifdef CONFIG_MACH_LPD7A404
278 MACHINE_START (LPD7A404, "Logic Product Development LPD7A404-10")
279 /* Maintainer: Marc Singer */
280 .phys_ram = 0xc0000000,
281 .phys_io = 0x80000000,
282 .io_pg_offst = ((io_p2v (0x80000000))>>18) & 0xfffc,
283 .boot_params = 0xc0000100,
284 .map_io = lpd7a400_map_io,
285 .init_irq = lh7a404_init_irq,
286 .timer = &lh7a40x_timer,
287 .init_machine = lpd7a40x_init,