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Linux/arch/arm/mach-mmp/pxa168.c

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  1 /*
  2  *  linux/arch/arm/mach-mmp/pxa168.c
  3  *
  4  *  Code specific to PXA168
  5  *
  6  * This program is free software; you can redistribute it and/or modify
  7  * it under the terms of the GNU General Public License version 2 as
  8  * published by the Free Software Foundation.
  9  */
 10 #include <linux/module.h>
 11 #include <linux/kernel.h>
 12 #include <linux/init.h>
 13 #include <linux/list.h>
 14 #include <linux/io.h>
 15 #include <linux/clk.h>
 16 #include <linux/platform_device.h>
 17 #include <linux/platform_data/mv_usb.h>
 18 
 19 #include <asm/mach/time.h>
 20 #include <asm/system_misc.h>
 21 #include <mach/cputype.h>
 22 #include <mach/addr-map.h>
 23 #include <mach/regs-apbc.h>
 24 #include <mach/regs-apmu.h>
 25 #include <mach/irqs.h>
 26 #include <mach/dma.h>
 27 #include <mach/devices.h>
 28 #include <mach/mfp.h>
 29 #include <linux/dma-mapping.h>
 30 #include <mach/pxa168.h>
 31 #include <mach/regs-usb.h>
 32 
 33 #include "common.h"
 34 #include "clock.h"
 35 
 36 #define MFPR_VIRT_BASE  (APB_VIRT_BASE + 0x1e000)
 37 
 38 static struct mfp_addr_map pxa168_mfp_addr_map[] __initdata =
 39 {
 40         MFP_ADDR_X(GPIO0,   GPIO36,  0x04c),
 41         MFP_ADDR_X(GPIO37,  GPIO55,  0x000),
 42         MFP_ADDR_X(GPIO56,  GPIO123, 0x0e0),
 43         MFP_ADDR_X(GPIO124, GPIO127, 0x0f4),
 44 
 45         MFP_ADDR_END,
 46 };
 47 
 48 void __init pxa168_init_irq(void)
 49 {
 50         icu_init_irq();
 51 }
 52 
 53 static int __init pxa168_init(void)
 54 {
 55         if (cpu_is_pxa168()) {
 56                 mfp_init_base(MFPR_VIRT_BASE);
 57                 mfp_init_addr(pxa168_mfp_addr_map);
 58                 pxa_init_dma(IRQ_PXA168_DMA_INT0, 32);
 59                 pxa168_clk_init();
 60         }
 61 
 62         return 0;
 63 }
 64 postcore_initcall(pxa168_init);
 65 
 66 /* system timer - clock enabled, 3.25MHz */
 67 #define TIMER_CLK_RST   (APBC_APBCLK | APBC_FNCLK | APBC_FNCLKSEL(3))
 68 #define APBC_TIMERS     APBC_REG(0x34)
 69 
 70 void __init pxa168_timer_init(void)
 71 {
 72         /* this is early, we have to initialize the CCU registers by
 73          * ourselves instead of using clk_* API. Clock rate is defined
 74          * by APBC_TIMERS_CLK_RST (3.25MHz) and enabled free-running
 75          */
 76         __raw_writel(APBC_APBCLK | APBC_RST, APBC_TIMERS);
 77 
 78         /* 3.25MHz, bus/functional clock enabled, release reset */
 79         __raw_writel(TIMER_CLK_RST, APBC_TIMERS);
 80 
 81         timer_init(IRQ_PXA168_TIMER1);
 82 }
 83 
 84 void pxa168_clear_keypad_wakeup(void)
 85 {
 86         uint32_t val;
 87         uint32_t mask = APMU_PXA168_KP_WAKE_CLR;
 88 
 89         /* wake event clear is needed in order to clear keypad interrupt */
 90         val = __raw_readl(APMU_WAKE_CLR);
 91         __raw_writel(val |  mask, APMU_WAKE_CLR);
 92 }
 93 
 94 /* on-chip devices */
 95 PXA168_DEVICE(uart1, "pxa2xx-uart", 0, UART1, 0xd4017000, 0x30, 21, 22);
 96 PXA168_DEVICE(uart2, "pxa2xx-uart", 1, UART2, 0xd4018000, 0x30, 23, 24);
 97 PXA168_DEVICE(uart3, "pxa2xx-uart", 2, UART3, 0xd4026000, 0x30, 23, 24);
 98 PXA168_DEVICE(twsi0, "pxa2xx-i2c", 0, TWSI0, 0xd4011000, 0x28);
 99 PXA168_DEVICE(twsi1, "pxa2xx-i2c", 1, TWSI1, 0xd4025000, 0x28);
100 PXA168_DEVICE(pwm1, "pxa168-pwm", 0, NONE, 0xd401a000, 0x10);
101 PXA168_DEVICE(pwm2, "pxa168-pwm", 1, NONE, 0xd401a400, 0x10);
102 PXA168_DEVICE(pwm3, "pxa168-pwm", 2, NONE, 0xd401a800, 0x10);
103 PXA168_DEVICE(pwm4, "pxa168-pwm", 3, NONE, 0xd401ac00, 0x10);
104 PXA168_DEVICE(nand, "pxa3xx-nand", -1, NAND, 0xd4283000, 0x80, 97, 99);
105 PXA168_DEVICE(ssp1, "pxa168-ssp", 0, SSP1, 0xd401b000, 0x40, 52, 53);
106 PXA168_DEVICE(ssp2, "pxa168-ssp", 1, SSP2, 0xd401c000, 0x40, 54, 55);
107 PXA168_DEVICE(ssp3, "pxa168-ssp", 2, SSP3, 0xd401f000, 0x40, 56, 57);
108 PXA168_DEVICE(ssp4, "pxa168-ssp", 3, SSP4, 0xd4020000, 0x40, 58, 59);
109 PXA168_DEVICE(ssp5, "pxa168-ssp", 4, SSP5, 0xd4021000, 0x40, 60, 61);
110 PXA168_DEVICE(fb, "pxa168-fb", -1, LCD, 0xd420b000, 0x1c8);
111 PXA168_DEVICE(keypad, "pxa27x-keypad", -1, KEYPAD, 0xd4012000, 0x4c);
112 PXA168_DEVICE(eth, "pxa168-eth", -1, MFU, 0xc0800000, 0x0fff);
113 
114 struct resource pxa168_resource_gpio[] = {
115         {
116                 .start  = 0xd4019000,
117                 .end    = 0xd4019fff,
118                 .flags  = IORESOURCE_MEM,
119         }, {
120                 .start  = IRQ_PXA168_GPIOX,
121                 .end    = IRQ_PXA168_GPIOX,
122                 .name   = "gpio_mux",
123                 .flags  = IORESOURCE_IRQ,
124         },
125 };
126 
127 struct platform_device pxa168_device_gpio = {
128         .name           = "mmp-gpio",
129         .id             = -1,
130         .num_resources  = ARRAY_SIZE(pxa168_resource_gpio),
131         .resource       = pxa168_resource_gpio,
132 };
133 
134 struct resource pxa168_usb_host_resources[] = {
135         /* USB Host conroller register base */
136         [0] = {
137                 .start  = PXA168_U2H_REGBASE + U2x_CAPREGS_OFFSET,
138                 .end    = PXA168_U2H_REGBASE + USB_REG_RANGE,
139                 .flags  = IORESOURCE_MEM,
140                 .name   = "capregs",
141         },
142         /* USB PHY register base */
143         [1] = {
144                 .start  = PXA168_U2H_PHYBASE,
145                 .end    = PXA168_U2H_PHYBASE + USB_PHY_RANGE,
146                 .flags  = IORESOURCE_MEM,
147                 .name   = "phyregs",
148         },
149         [2] = {
150                 .start  = IRQ_PXA168_USB2,
151                 .end    = IRQ_PXA168_USB2,
152                 .flags  = IORESOURCE_IRQ,
153         },
154 };
155 
156 static u64 pxa168_usb_host_dmamask = DMA_BIT_MASK(32);
157 struct platform_device pxa168_device_usb_host = {
158         .name = "pxa-sph",
159         .id   = -1,
160         .dev  = {
161                 .dma_mask = &pxa168_usb_host_dmamask,
162                 .coherent_dma_mask = DMA_BIT_MASK(32),
163         },
164 
165         .num_resources = ARRAY_SIZE(pxa168_usb_host_resources),
166         .resource      = pxa168_usb_host_resources,
167 };
168 
169 int __init pxa168_add_usb_host(struct mv_usb_platform_data *pdata)
170 {
171         pxa168_device_usb_host.dev.platform_data = pdata;
172         return platform_device_register(&pxa168_device_usb_host);
173 }
174 
175 void pxa168_restart(enum reboot_mode mode, const char *cmd)
176 {
177         soft_restart(0xffff0000);
178 }
179 

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