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mmp2.c

/*
 * linux/arch/arm/mach-mmp/mmp2.c
 *
 * code name MMP2
 *
 * Copyright (C) 2009 Marvell International Ltd.
 *
 * 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/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>

#include <asm/hardware/cache-tauros2.h>

#include <asm/mach/time.h>
#include <mach/addr-map.h>
#include <mach/regs-apbc.h>
#include <mach/regs-apmu.h>
#include <mach/cputype.h>
#include <mach/irqs.h>
#include <mach/dma.h>
#include <mach/mfp.h>
#include <mach/gpio.h>
#include <mach/devices.h>
#include <mach/mmp2.h>

#include "common.h"
#include "clock.h"

#define MFPR_VIRT_BASE  (APB_VIRT_BASE + 0x1e000)

#define APMASK(i) (GPIO_REGS_VIRT + BANK_OFF(i) + 0x9c)

static struct mfp_addr_map mmp2_addr_map[] __initdata = {

      MFP_ADDR_X(GPIO0, GPIO58, 0x54),
      MFP_ADDR_X(GPIO59, GPIO73, 0x280),
      MFP_ADDR_X(GPIO74, GPIO101, 0x170),

      MFP_ADDR(GPIO102, 0x0),
      MFP_ADDR(GPIO103, 0x4),
      MFP_ADDR(GPIO104, 0x1fc),
      MFP_ADDR(GPIO105, 0x1f8),
      MFP_ADDR(GPIO106, 0x1f4),
      MFP_ADDR(GPIO107, 0x1f0),
      MFP_ADDR(GPIO108, 0x21c),
      MFP_ADDR(GPIO109, 0x218),
      MFP_ADDR(GPIO110, 0x214),
      MFP_ADDR(GPIO111, 0x200),
      MFP_ADDR(GPIO112, 0x244),
      MFP_ADDR(GPIO113, 0x25c),
      MFP_ADDR(GPIO114, 0x164),
      MFP_ADDR_X(GPIO115, GPIO122, 0x260),

      MFP_ADDR(GPIO123, 0x148),
      MFP_ADDR_X(GPIO124, GPIO141, 0xc),

      MFP_ADDR(GPIO142, 0x8),
      MFP_ADDR_X(GPIO143, GPIO151, 0x220),
      MFP_ADDR_X(GPIO152, GPIO153, 0x248),
      MFP_ADDR_X(GPIO154, GPIO155, 0x254),
      MFP_ADDR_X(GPIO156, GPIO159, 0x14c),

      MFP_ADDR(GPIO160, 0x250),
      MFP_ADDR(GPIO161, 0x210),
      MFP_ADDR(GPIO162, 0x20c),
      MFP_ADDR(GPIO163, 0x208),
      MFP_ADDR(GPIO164, 0x204),
      MFP_ADDR(GPIO165, 0x1ec),
      MFP_ADDR(GPIO166, 0x1e8),
      MFP_ADDR(GPIO167, 0x1e4),
      MFP_ADDR(GPIO168, 0x1e0),

      MFP_ADDR_X(TWSI1_SCL, TWSI1_SDA, 0x140),
      MFP_ADDR_X(TWSI4_SCL, TWSI4_SDA, 0x2bc),

      MFP_ADDR(PMIC_INT, 0x2c4),
      MFP_ADDR(CLK_REQ, 0x160),

      MFP_ADDR_END,
};

void mmp2_clear_pmic_int(void)
{
      unsigned long mfpr_pmic, data;

      mfpr_pmic = APB_VIRT_BASE + 0x1e000 + 0x2c4;
      data = __raw_readl(mfpr_pmic);
      __raw_writel(data | (1 << 6), mfpr_pmic);
      __raw_writel(data, mfpr_pmic);
}

static void __init mmp2_init_gpio(void)
{
      int i;

      /* enable GPIO clock */
      __raw_writel(APBC_APBCLK | APBC_FNCLK, APBC_MMP2_GPIO);

      /* unmask GPIO edge detection for all 6 banks -- APMASKx */
      for (i = 0; i < 6; i++)
            __raw_writel(0xffffffff, APMASK(i));

      pxa_init_gpio(IRQ_MMP2_GPIO, 0, 167, NULL);
}

void __init mmp2_init_irq(void)
{
      mmp2_init_icu();
      mmp2_init_gpio();
}

static void sdhc_clk_enable(struct clk *clk)
{
      uint32_t clk_rst;

      clk_rst  =  __raw_readl(clk->clk_rst);
      clk_rst |= clk->enable_val;
      __raw_writel(clk_rst, clk->clk_rst);
}

static void sdhc_clk_disable(struct clk *clk)
{
      uint32_t clk_rst;

      clk_rst  =  __raw_readl(clk->clk_rst);
      clk_rst &= ~clk->enable_val;
      __raw_writel(clk_rst, clk->clk_rst);
}

struct clkops sdhc_clk_ops = {
      .enable           = sdhc_clk_enable,
      .disable    = sdhc_clk_disable,
};

/* APB peripheral clocks */
static APBC_CLK(uart1, MMP2_UART1, 1, 26000000);
static APBC_CLK(uart2, MMP2_UART2, 1, 26000000);
static APBC_CLK(uart3, MMP2_UART3, 1, 26000000);
static APBC_CLK(uart4, MMP2_UART4, 1, 26000000);
static APBC_CLK(twsi1, MMP2_TWSI1, 0, 26000000);
static APBC_CLK(twsi2, MMP2_TWSI2, 0, 26000000);
static APBC_CLK(twsi3, MMP2_TWSI3, 0, 26000000);
static APBC_CLK(twsi4, MMP2_TWSI4, 0, 26000000);
static APBC_CLK(twsi5, MMP2_TWSI5, 0, 26000000);
static APBC_CLK(twsi6, MMP2_TWSI6, 0, 26000000);

static APMU_CLK(nand, NAND, 0xbf, 100000000);
static APMU_CLK_OPS(sdh0, SDH0, 0x1b, 200000000, &sdhc_clk_ops);
static APMU_CLK_OPS(sdh1, SDH1, 0x1b, 200000000, &sdhc_clk_ops);
static APMU_CLK_OPS(sdh2, SDH2, 0x1b, 200000000, &sdhc_clk_ops);
static APMU_CLK_OPS(sdh3, SDH3, 0x1b, 200000000, &sdhc_clk_ops);

static struct clk_lookup mmp2_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_uart4, "pxa2xx-uart.3", NULL),
      INIT_CLKREG(&clk_twsi1, "pxa2xx-i2c.0", NULL),
      INIT_CLKREG(&clk_twsi2, "pxa2xx-i2c.1", NULL),
      INIT_CLKREG(&clk_twsi3, "pxa2xx-i2c.2", NULL),
      INIT_CLKREG(&clk_twsi4, "pxa2xx-i2c.3", NULL),
      INIT_CLKREG(&clk_twsi5, "pxa2xx-i2c.4", NULL),
      INIT_CLKREG(&clk_twsi6, "pxa2xx-i2c.5", NULL),
      INIT_CLKREG(&clk_nand, "pxa3xx-nand", NULL),
      INIT_CLKREG(&clk_sdh0, "sdhci-pxa.0", "PXA-SDHCLK"),
      INIT_CLKREG(&clk_sdh1, "sdhci-pxa.1", "PXA-SDHCLK"),
      INIT_CLKREG(&clk_sdh2, "sdhci-pxa.2", "PXA-SDHCLK"),
      INIT_CLKREG(&clk_sdh3, "sdhci-pxa.3", "PXA-SDHCLK"),
};

static int __init mmp2_init(void)
{
      if (cpu_is_mmp2()) {
#ifdef CONFIG_CACHE_TAUROS2
            tauros2_init();
#endif
            mfp_init_base(MFPR_VIRT_BASE);
            mfp_init_addr(mmp2_addr_map);
            pxa_init_dma(IRQ_MMP2_DMA_RIQ, 16);
            clkdev_add_table(ARRAY_AND_SIZE(mmp2_clkregs));
      }

      return 0;
}
postcore_initcall(mmp2_init);

static void __init mmp2_timer_init(void)
{
      unsigned long clk_rst;

      __raw_writel(APBC_APBCLK | APBC_RST, APBC_MMP2_TIMERS);

      /*
       * enable bus/functional clock, enable 6.5MHz (divider 4),
       * release reset
       */
      clk_rst = APBC_APBCLK | APBC_FNCLK | APBC_FNCLKSEL(1);
      __raw_writel(clk_rst, APBC_MMP2_TIMERS);

      timer_init(IRQ_MMP2_TIMER1);
}

struct sys_timer mmp2_timer = {
      .init = mmp2_timer_init,
};

/* on-chip devices */
MMP2_DEVICE(uart1, "pxa2xx-uart", 0, UART1, 0xd4030000, 0x30, 4, 5);
MMP2_DEVICE(uart2, "pxa2xx-uart", 1, UART2, 0xd4017000, 0x30, 20, 21);
MMP2_DEVICE(uart3, "pxa2xx-uart", 2, UART3, 0xd4018000, 0x30, 22, 23);
MMP2_DEVICE(uart4, "pxa2xx-uart", 3, UART4, 0xd4016000, 0x30, 18, 19);
MMP2_DEVICE(twsi1, "pxa2xx-i2c", 0, TWSI1, 0xd4011000, 0x70);
MMP2_DEVICE(twsi2, "pxa2xx-i2c", 1, TWSI2, 0xd4031000, 0x70);
MMP2_DEVICE(twsi3, "pxa2xx-i2c", 2, TWSI3, 0xd4032000, 0x70);
MMP2_DEVICE(twsi4, "pxa2xx-i2c", 3, TWSI4, 0xd4033000, 0x70);
MMP2_DEVICE(twsi5, "pxa2xx-i2c", 4, TWSI5, 0xd4033800, 0x70);
MMP2_DEVICE(twsi6, "pxa2xx-i2c", 5, TWSI6, 0xd4034000, 0x70);
MMP2_DEVICE(nand, "pxa3xx-nand", -1, NAND, 0xd4283000, 0x100, 28, 29);
MMP2_DEVICE(sdh0, "sdhci-pxa", 0, MMC, 0xd4280000, 0x120);
MMP2_DEVICE(sdh1, "sdhci-pxa", 1, MMC2, 0xd4280800, 0x120);
MMP2_DEVICE(sdh2, "sdhci-pxa", 2, MMC3, 0xd4281000, 0x120);
MMP2_DEVICE(sdh3, "sdhci-pxa", 3, MMC4, 0xd4281800, 0x120);


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