| /* |
| * linux/arch/arm/mach-mmp/pxa168.c |
| * |
| * Code specific to PXA168 |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| #include <linux/gpio.h> |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/list.h> |
| #include <linux/io.h> |
| #include <linux/clk.h> |
| |
| #include <asm/mach/time.h> |
| #include <mach/addr-map.h> |
| #include <mach/cputype.h> |
| #include <mach/regs-apbc.h> |
| #include <mach/regs-apmu.h> |
| #include <mach/irqs.h> |
| #include <mach/dma.h> |
| #include <mach/devices.h> |
| #include <mach/mfp.h> |
| |
| #include "common.h" |
| #include "clock.h" |
| |
| #define MFPR_VIRT_BASE (APB_VIRT_BASE + 0x1e000) |
| |
| static struct mfp_addr_map pxa168_mfp_addr_map[] __initdata = |
| { |
| MFP_ADDR_X(GPIO0, GPIO36, 0x04c), |
| MFP_ADDR_X(GPIO37, GPIO55, 0x000), |
| MFP_ADDR_X(GPIO56, GPIO123, 0x0e0), |
| MFP_ADDR_X(GPIO124, GPIO127, 0x0f4), |
| |
| MFP_ADDR_END, |
| }; |
| |
| #define APMASK(i) (GPIO_REGS_VIRT + BANK_OFF(i) + 0x09c) |
| |
| static void __init pxa168_init_gpio(void) |
| { |
| int i; |
| |
| /* enable GPIO clock */ |
| __raw_writel(APBC_APBCLK | APBC_FNCLK, APBC_PXA168_GPIO); |
| |
| /* unmask GPIO edge detection for all 4 banks - APMASKx */ |
| for (i = 0; i < 4; i++) |
| __raw_writel(0xffffffff, APMASK(i)); |
| |
| pxa_init_gpio(IRQ_PXA168_GPIOX, 0, 127, NULL); |
| } |
| |
| void __init pxa168_init_irq(void) |
| { |
| icu_init_irq(); |
| pxa168_init_gpio(); |
| } |
| |
| /* APB peripheral clocks */ |
| static APBC_CLK(uart1, PXA168_UART1, 1, 14745600); |
| static APBC_CLK(uart2, PXA168_UART2, 1, 14745600); |
| static APBC_CLK(uart3, PXA168_UART3, 1, 14745600); |
| static APBC_CLK(twsi0, PXA168_TWSI0, 1, 33000000); |
| static APBC_CLK(twsi1, PXA168_TWSI1, 1, 33000000); |
| static APBC_CLK(pwm1, PXA168_PWM1, 1, 13000000); |
| static APBC_CLK(pwm2, PXA168_PWM2, 1, 13000000); |
| static APBC_CLK(pwm3, PXA168_PWM3, 1, 13000000); |
| static APBC_CLK(pwm4, PXA168_PWM4, 1, 13000000); |
| static APBC_CLK(ssp1, PXA168_SSP1, 4, 0); |
| static APBC_CLK(ssp2, PXA168_SSP2, 4, 0); |
| static APBC_CLK(ssp3, PXA168_SSP3, 4, 0); |
| static APBC_CLK(ssp4, PXA168_SSP4, 4, 0); |
| static APBC_CLK(ssp5, PXA168_SSP5, 4, 0); |
| static APBC_CLK(keypad, PXA168_KPC, 0, 32000); |
| |
| static APMU_CLK(nand, NAND, 0x19b, 156000000); |
| static APMU_CLK(lcd, LCD, 0x7f, 312000000); |
| static APMU_CLK(eth, ETH, 0x09, 0); |
| |
| /* device and clock bindings */ |
| static struct clk_lookup pxa168_clkregs[] = { |
| INIT_CLKREG(&clk_uart1, "pxa2xx-uart.0", NULL), |
| INIT_CLKREG(&clk_uart2, "pxa2xx-uart.1", NULL), |
| INIT_CLKREG(&clk_uart3, "pxa2xx-uart.2", NULL), |
| INIT_CLKREG(&clk_twsi0, "pxa2xx-i2c.0", NULL), |
| INIT_CLKREG(&clk_twsi1, "pxa2xx-i2c.1", NULL), |
| INIT_CLKREG(&clk_pwm1, "pxa168-pwm.0", NULL), |
| INIT_CLKREG(&clk_pwm2, "pxa168-pwm.1", NULL), |
| INIT_CLKREG(&clk_pwm3, "pxa168-pwm.2", NULL), |
| INIT_CLKREG(&clk_pwm4, "pxa168-pwm.3", NULL), |
| INIT_CLKREG(&clk_ssp1, "pxa168-ssp.0", NULL), |
| INIT_CLKREG(&clk_ssp2, "pxa168-ssp.1", NULL), |
| INIT_CLKREG(&clk_ssp3, "pxa168-ssp.2", NULL), |
| INIT_CLKREG(&clk_ssp4, "pxa168-ssp.3", NULL), |
| INIT_CLKREG(&clk_ssp5, "pxa168-ssp.4", NULL), |
| INIT_CLKREG(&clk_nand, "pxa3xx-nand", NULL), |
| INIT_CLKREG(&clk_lcd, "pxa168-fb", NULL), |
| INIT_CLKREG(&clk_keypad, "pxa27x-keypad", NULL), |
| INIT_CLKREG(&clk_eth, "pxa168-eth", "MFUCLK"), |
| }; |
| |
| static int __init pxa168_init(void) |
| { |
| if (cpu_is_pxa168()) { |
| mfp_init_base(MFPR_VIRT_BASE); |
| mfp_init_addr(pxa168_mfp_addr_map); |
| pxa_init_dma(IRQ_PXA168_DMA_INT0, 32); |
| clkdev_add_table(ARRAY_AND_SIZE(pxa168_clkregs)); |
| } |
| |
| return 0; |
| } |
| postcore_initcall(pxa168_init); |
| |
| /* system timer - clock enabled, 3.25MHz */ |
| #define TIMER_CLK_RST (APBC_APBCLK | APBC_FNCLK | APBC_FNCLKSEL(3)) |
| |
| static void __init pxa168_timer_init(void) |
| { |
| /* this is early, we have to initialize the CCU registers by |
| * ourselves instead of using clk_* API. Clock rate is defined |
| * by APBC_TIMERS_CLK_RST (3.25MHz) and enabled free-running |
| */ |
| __raw_writel(APBC_APBCLK | APBC_RST, APBC_PXA168_TIMERS); |
| |
| /* 3.25MHz, bus/functional clock enabled, release reset */ |
| __raw_writel(TIMER_CLK_RST, APBC_PXA168_TIMERS); |
| |
| timer_init(IRQ_PXA168_TIMER1); |
| } |
| |
| struct sys_timer pxa168_timer = { |
| .init = pxa168_timer_init, |
| }; |
| |
| void pxa168_clear_keypad_wakeup(void) |
| { |
| uint32_t val; |
| uint32_t mask = APMU_PXA168_KP_WAKE_CLR; |
| |
| /* wake event clear is needed in order to clear keypad interrupt */ |
| val = __raw_readl(APMU_WAKE_CLR); |
| __raw_writel(val | mask, APMU_WAKE_CLR); |
| } |
| |
| /* on-chip devices */ |
| PXA168_DEVICE(uart1, "pxa2xx-uart", 0, UART1, 0xd4017000, 0x30, 21, 22); |
| PXA168_DEVICE(uart2, "pxa2xx-uart", 1, UART2, 0xd4018000, 0x30, 23, 24); |
| PXA168_DEVICE(uart3, "pxa2xx-uart", 2, UART3, 0xd4026000, 0x30, 23, 24); |
| PXA168_DEVICE(twsi0, "pxa2xx-i2c", 0, TWSI0, 0xd4011000, 0x28); |
| PXA168_DEVICE(twsi1, "pxa2xx-i2c", 1, TWSI1, 0xd4025000, 0x28); |
| PXA168_DEVICE(pwm1, "pxa168-pwm", 0, NONE, 0xd401a000, 0x10); |
| PXA168_DEVICE(pwm2, "pxa168-pwm", 1, NONE, 0xd401a400, 0x10); |
| PXA168_DEVICE(pwm3, "pxa168-pwm", 2, NONE, 0xd401a800, 0x10); |
| PXA168_DEVICE(pwm4, "pxa168-pwm", 3, NONE, 0xd401ac00, 0x10); |
| PXA168_DEVICE(nand, "pxa3xx-nand", -1, NAND, 0xd4283000, 0x80, 97, 99); |
| PXA168_DEVICE(ssp1, "pxa168-ssp", 0, SSP1, 0xd401b000, 0x40, 52, 53); |
| PXA168_DEVICE(ssp2, "pxa168-ssp", 1, SSP2, 0xd401c000, 0x40, 54, 55); |
| PXA168_DEVICE(ssp3, "pxa168-ssp", 2, SSP3, 0xd401f000, 0x40, 56, 57); |
| PXA168_DEVICE(ssp4, "pxa168-ssp", 3, SSP4, 0xd4020000, 0x40, 58, 59); |
| PXA168_DEVICE(ssp5, "pxa168-ssp", 4, SSP5, 0xd4021000, 0x40, 60, 61); |
| PXA168_DEVICE(fb, "pxa168-fb", -1, LCD, 0xd420b000, 0x1c8); |
| PXA168_DEVICE(keypad, "pxa27x-keypad", -1, KEYPAD, 0xd4012000, 0x4c); |
| PXA168_DEVICE(eth, "pxa168-eth", -1, MFU, 0xc0800000, 0x0fff); |