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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/clk/mmp.h>
 17 #include <linux/platform_device.h>
 18 #include <linux/platform_data/mv_usb.h>
 19 #include <linux/dma-mapping.h>
 20 
 21 #include <asm/mach/time.h>
 22 #include <asm/system_misc.h>
 23 
 24 #include "addr-map.h"
 25 #include "clock.h"
 26 #include "common.h"
 27 #include "cputype.h"
 28 #include "devices.h"
 29 #include "irqs.h"
 30 #include "mfp.h"
 31 #include "pxa168.h"
 32 #include "regs-apbc.h"
 33 #include "regs-apmu.h"
 34 #include "regs-usb.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                 pxa168_clk_init(APB_PHYS_BASE + 0x50000,
 59                                 AXI_PHYS_BASE + 0x82800,
 60                                 APB_PHYS_BASE + 0x15000);
 61         }
 62 
 63         return 0;
 64 }
 65 postcore_initcall(pxa168_init);
 66 
 67 /* system timer - clock enabled, 3.25MHz */
 68 #define TIMER_CLK_RST   (APBC_APBCLK | APBC_FNCLK | APBC_FNCLKSEL(3))
 69 #define APBC_TIMERS     APBC_REG(0x34)
 70 
 71 void __init pxa168_timer_init(void)
 72 {
 73         /* this is early, we have to initialize the CCU registers by
 74          * ourselves instead of using clk_* API. Clock rate is defined
 75          * by APBC_TIMERS_CLK_RST (3.25MHz) and enabled free-running
 76          */
 77         __raw_writel(APBC_APBCLK | APBC_RST, APBC_TIMERS);
 78 
 79         /* 3.25MHz, bus/functional clock enabled, release reset */
 80         __raw_writel(TIMER_CLK_RST, APBC_TIMERS);
 81 
 82         timer_init(IRQ_PXA168_TIMER1);
 83 }
 84 
 85 void pxa168_clear_keypad_wakeup(void)
 86 {
 87         uint32_t val;
 88         uint32_t mask = APMU_PXA168_KP_WAKE_CLR;
 89 
 90         /* wake event clear is needed in order to clear keypad interrupt */
 91         val = __raw_readl(APMU_WAKE_CLR);
 92         __raw_writel(val |  mask, APMU_WAKE_CLR);
 93 }
 94 
 95 /* on-chip devices */
 96 PXA168_DEVICE(uart1, "pxa2xx-uart", 0, UART1, 0xd4017000, 0x30, 21, 22);
 97 PXA168_DEVICE(uart2, "pxa2xx-uart", 1, UART2, 0xd4018000, 0x30, 23, 24);
 98 PXA168_DEVICE(uart3, "pxa2xx-uart", 2, UART3, 0xd4026000, 0x30, 23, 24);
 99 PXA168_DEVICE(twsi0, "pxa2xx-i2c", 0, TWSI0, 0xd4011000, 0x28);
100 PXA168_DEVICE(twsi1, "pxa2xx-i2c", 1, TWSI1, 0xd4025000, 0x28);
101 PXA168_DEVICE(pwm1, "pxa168-pwm", 0, NONE, 0xd401a000, 0x10);
102 PXA168_DEVICE(pwm2, "pxa168-pwm", 1, NONE, 0xd401a400, 0x10);
103 PXA168_DEVICE(pwm3, "pxa168-pwm", 2, NONE, 0xd401a800, 0x10);
104 PXA168_DEVICE(pwm4, "pxa168-pwm", 3, NONE, 0xd401ac00, 0x10);
105 PXA168_DEVICE(nand, "pxa3xx-nand", -1, NAND, 0xd4283000, 0x80, 97, 99);
106 PXA168_DEVICE(ssp1, "pxa168-ssp", 0, SSP1, 0xd401b000, 0x40, 52, 53);
107 PXA168_DEVICE(ssp2, "pxa168-ssp", 1, SSP2, 0xd401c000, 0x40, 54, 55);
108 PXA168_DEVICE(ssp3, "pxa168-ssp", 2, SSP3, 0xd401f000, 0x40, 56, 57);
109 PXA168_DEVICE(ssp4, "pxa168-ssp", 3, SSP4, 0xd4020000, 0x40, 58, 59);
110 PXA168_DEVICE(ssp5, "pxa168-ssp", 4, SSP5, 0xd4021000, 0x40, 60, 61);
111 PXA168_DEVICE(fb, "pxa168-fb", -1, LCD, 0xd420b000, 0x1c8);
112 PXA168_DEVICE(keypad, "pxa27x-keypad", -1, KEYPAD, 0xd4012000, 0x4c);
113 PXA168_DEVICE(eth, "pxa168-eth", -1, MFU, 0xc0800000, 0x0fff);
114 
115 struct resource pxa168_resource_gpio[] = {
116         {
117                 .start  = 0xd4019000,
118                 .end    = 0xd4019fff,
119                 .flags  = IORESOURCE_MEM,
120         }, {
121                 .start  = IRQ_PXA168_GPIOX,
122                 .end    = IRQ_PXA168_GPIOX,
123                 .name   = "gpio_mux",
124                 .flags  = IORESOURCE_IRQ,
125         },
126 };
127 
128 struct platform_device pxa168_device_gpio = {
129         .name           = "mmp-gpio",
130         .id             = -1,
131         .num_resources  = ARRAY_SIZE(pxa168_resource_gpio),
132         .resource       = pxa168_resource_gpio,
133 };
134 
135 struct resource pxa168_usb_host_resources[] = {
136         /* USB Host conroller register base */
137         [0] = {
138                 .start  = PXA168_U2H_REGBASE + U2x_CAPREGS_OFFSET,
139                 .end    = PXA168_U2H_REGBASE + USB_REG_RANGE,
140                 .flags  = IORESOURCE_MEM,
141                 .name   = "capregs",
142         },
143         /* USB PHY register base */
144         [1] = {
145                 .start  = PXA168_U2H_PHYBASE,
146                 .end    = PXA168_U2H_PHYBASE + USB_PHY_RANGE,
147                 .flags  = IORESOURCE_MEM,
148                 .name   = "phyregs",
149         },
150         [2] = {
151                 .start  = IRQ_PXA168_USB2,
152                 .end    = IRQ_PXA168_USB2,
153                 .flags  = IORESOURCE_IRQ,
154         },
155 };
156 
157 static u64 pxa168_usb_host_dmamask = DMA_BIT_MASK(32);
158 struct platform_device pxa168_device_usb_host = {
159         .name = "pxa-sph",
160         .id   = -1,
161         .dev  = {
162                 .dma_mask = &pxa168_usb_host_dmamask,
163                 .coherent_dma_mask = DMA_BIT_MASK(32),
164         },
165 
166         .num_resources = ARRAY_SIZE(pxa168_usb_host_resources),
167         .resource      = pxa168_usb_host_resources,
168 };
169 
170 int __init pxa168_add_usb_host(struct mv_usb_platform_data *pdata)
171 {
172         pxa168_device_usb_host.dev.platform_data = pdata;
173         return platform_device_register(&pxa168_device_usb_host);
174 }
175 
176 void pxa168_restart(enum reboot_mode mode, const char *cmd)
177 {
178         soft_restart(0xffff0000);
179 }
180 

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