/*
* mach-davinci/devices.c
*
* DaVinci platform device setup/initialization
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/io.h>
#include <mach/hardware.h>
#include <linux/platform_data/i2c-davinci.h>
#include <mach/irqs.h>
#include <mach/cputype.h>
#include <mach/mux.h>
#include <linux/platform_data/mmc-davinci.h>
#include <mach/time.h>
#include <linux/platform_data/edma.h>
#include "davinci.h"
#include "clock.h"
#define DAVINCI_I2C_BASE 0x01C21000
#define DAVINCI_ATA_BASE 0x01C66000
#define DAVINCI_MMCSD0_BASE 0x01E10000
#define DM355_MMCSD0_BASE 0x01E11000
#define DM355_MMCSD1_BASE 0x01E00000
#define DM365_MMCSD0_BASE 0x01D11000
#define DM365_MMCSD1_BASE 0x01D00000
#define DAVINCI_DMA_MMCRXEVT 26
#define DAVINCI_DMA_MMCTXEVT 27
void __iomem *davinci_sysmod_base;
void davinci_map_sysmod(void)
{
davinci_sysmod_base = ioremap_nocache(DAVINCI_SYSTEM_MODULE_BASE,
0x800);
/*
* Throw a bug since a lot of board initialization code depends
* on system module availability. ioremap() failing this early
* need careful looking into anyway.
*/
BUG_ON(!davinci_sysmod_base);
}
static struct resource i2c_resources[] = {
{
.start = DAVINCI_I2C_BASE,
.end = DAVINCI_I2C_BASE + 0x40,
.flags = IORESOURCE_MEM,
},
{
.start = IRQ_I2C,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device davinci_i2c_device = {
.name = "i2c_davinci",
.id = 1,
.num_resources = ARRAY_SIZE(i2c_resources),
.resource = i2c_resources,
};
void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata)
{
if (cpu_is_davinci_dm644x())
davinci_cfg_reg(DM644X_I2C);
davinci_i2c_device.dev.platform_data = pdata;
(void) platform_device_register(&davinci_i2c_device);
}
static struct resource ide_resources[] = {
{
.start = DAVINCI_ATA_BASE,
.end = DAVINCI_ATA_BASE + 0x7ff,
.flags = IORESOURCE_MEM,
},
{
.start = IRQ_IDE,
.end = IRQ_IDE,
.flags = IORESOURCE_IRQ,
},
};
static u64 ide_dma_mask = DMA_BIT_MASK(32);
static struct platform_device ide_device = {
.name = "palm_bk3710",
.id = -1,
.resource = ide_resources,
.num_resources = ARRAY_SIZE(ide_resources),
.dev = {
.dma_mask = &ide_dma_mask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
};
void __init davinci_init_ide(void)
{
if (cpu_is_davinci_dm644x()) {
davinci_cfg_reg(DM644X_HPIEN_DISABLE);
davinci_cfg_reg(DM644X_ATAEN);
davinci_cfg_reg(DM644X_HDIREN);
} else if (cpu_is_davinci_dm646x()) {
/* IRQ_DM646X_IDE is the same as IRQ_IDE */
davinci_cfg_reg(DM646X_ATAEN);
} else {
WARN_ON(1);
return;
}
platform_device_register(&ide_device);
}
#if IS_ENABLED(CONFIG_MMC_DAVINCI)
static u64 mmcsd0_dma_mask = DMA_BIT_MASK(32);
static struct resource mmcsd0_resources[] = {
{
/* different on dm355 */
.start = DAVINCI_MMCSD0_BASE,
.end = DAVINCI_MMCSD0_BASE + SZ_4K - 1,
.flags = IORESOURCE_MEM,
},
/* IRQs: MMC/SD, then SDIO */
{
.start = IRQ_MMCINT,
.flags = IORESOURCE_IRQ,
}, {
/* different on dm355 */
.start = IRQ_SDIOINT,
.flags = IORESOURCE_IRQ,
},
/* DMA channels: RX, then TX */
{
.start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCRXEVT),
.flags = IORESOURCE_DMA,
}, {
.start = EDMA_CTLR_CHAN(0, DAVINCI_DMA_MMCTXEVT),
.flags = IORESOURCE_DMA,
},
};
static struct platform_device davinci_mmcsd0_device = {
.name = "dm6441-mmc",
.id = 0,
.dev = {
.dma_mask = &mmcsd0_dma_mask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
.num_resources = ARRAY_SIZE(mmcsd0_resources),
.resource = mmcsd0_resources,
};
static u64 mmcsd1_dma_mask = DMA_BIT_MASK(32);
static struct resource mmcsd1_resources[] = {
{
.start = DM355_MMCSD1_BASE,
.end = DM355_MMCSD1_BASE + SZ_4K - 1,
.flags = IORESOURCE_MEM,
},
/* IRQs: MMC/SD, then SDIO */
{
.start = IRQ_DM355_MMCINT1,
.flags = IORESOURCE_IRQ,
}, {
.start = IRQ_DM355_SDIOINT1,
.flags = IORESOURCE_IRQ,
},
/* DMA channels: RX, then TX */
{
.start = EDMA_CTLR_CHAN(0, 30), /* rx */
.flags = IORESOURCE_DMA,
}, {
.start = EDMA_CTLR_CHAN(0, 31), /* tx */
.flags = IORESOURCE_DMA,
},
};
static struct platform_device davinci_mmcsd1_device = {
.name = "dm6441-mmc",
.id = 1,
.dev = {
.dma_mask = &mmcsd1_dma_mask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
.num_resources = ARRAY_SIZE(mmcsd1_resources),
.resource = mmcsd1_resources,
};
void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
{
struct platform_device *pdev = NULL;
if (WARN_ON(cpu_is_davinci_dm646x()))
return;
/* REVISIT: update PINMUX, ARM_IRQMUX, and EDMA_EVTMUX here too;
* for example if MMCSD1 is used for SDIO, maybe DAT2 is unused.
*
* FIXME dm6441 (no MMC/SD), dm357 (one), and dm335 (two) are
* not handled right here ...
*/
switch (module) {
case 1:
if (cpu_is_davinci_dm355()) {
/* REVISIT we may not need all these pins if e.g. this
* is a hard-wired SDIO device...
*/
davinci_cfg_reg(DM355_SD1_CMD);
davinci_cfg_reg(DM355_SD1_CLK);
davinci_cfg_reg(DM355_SD1_DATA0);
davinci_cfg_reg(DM355_SD1_DATA1);
davinci_cfg_reg(DM355_SD1_DATA2);
davinci_cfg_reg(DM355_SD1_DATA3);
} else if (cpu_is_davinci_dm365()) {
/* Configure pull down control */
unsigned v;
v = __raw_readl(DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1));
__raw_writel(v & ~0xfc0,
DAVINCI_SYSMOD_VIRT(SYSMOD_PUPDCTL1));
mmcsd1_resources[0].start = DM365_MMCSD1_BASE;
mmcsd1_resources[0].end = DM365_MMCSD1_BASE +
SZ_4K - 1;
mmcsd1_resources[2].start = IRQ_DM365_SDIOINT1;
davinci_mmcsd1_device.name = "da830-mmc";
} else
break;
pdev = &davinci_mmcsd1_device;
break;
case 0:
if (cpu_is_davinci_dm355()) {
mmcsd0_resources[0].start = DM355_MMCSD0_BASE;
mmcsd0_resources[0].end = DM355_MMCSD0_BASE + SZ_4K - 1;
mmcsd0_resources[2].start = IRQ_DM355_SDIOINT0;
/* expose all 6 MMC0 signals: CLK, CMD, DATA[0..3] */
davinci_cfg_reg(DM355_MMCSD0);
/* enable RX EDMA */
davinci_cfg_reg(DM355_EVT26_MMC0_RX);
} else if (cpu_is_davinci_dm365()) {
mmcsd0_resources[0].start = DM365_MMCSD0_BASE;
mmcsd0_resources[0].end = DM365_MMCSD0_BASE +
SZ_4K - 1;
mmcsd0_resources[2].start = IRQ_DM365_SDIOINT0;
davinci_mmcsd0_device.name = "da830-mmc";
} else if (cpu_is_davinci_dm644x()) {
/* REVISIT: should this be in board-init code? */
/* Power-on 3.3V IO cells */
__raw_writel(0,
DAVINCI_SYSMOD_VIRT(SYSMOD_VDD3P3VPWDN));
/*Set up the pull regiter for MMC */
davinci_cfg_reg(DM644X_MSTK);
}
pdev = &davinci_mmcsd0_device;
break;
}
if (WARN_ON(!pdev))
return;
pdev->dev.platform_data = config;
platform_device_register(pdev);
}
#else
void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
{
}
#endif
/*-------------------------------------------------------------------------*/
static struct resource wdt_resources[] = {
{
.start = DAVINCI_WDOG_BASE,
.end = DAVINCI_WDOG_BASE + SZ_1K - 1,
.flags = IORESOURCE_MEM,
},
};
struct platform_device davinci_wdt_device = {
.name = "watchdog",
.id = -1,
.num_resources = ARRAY_SIZE(wdt_resources),
.resource = wdt_resources,
};
void davinci_restart(char mode, const char *cmd)
{
davinci_watchdog_reset(&davinci_wdt_device);
}
static void davinci_init_wdt(void)
{
platform_device_register(&davinci_wdt_device);
}
/*-------------------------------------------------------------------------*/
/*-------------------------------------------------------------------------*/
struct davinci_timer_instance davinci_timer_instance[2] = {
{
.base = DAVINCI_TIMER0_BASE,
.bottom_irq = IRQ_TINT0_TINT12,
.top_irq = IRQ_TINT0_TINT34,
},
{
.base = DAVINCI_TIMER1_BASE,
.bottom_irq = IRQ_TINT1_TINT12,
.top_irq = IRQ_TINT1_TINT34,
},
};
/*-------------------------------------------------------------------------*/
static int __init davinci_init_devices(void)
{
/* please keep these calls, and their implementations above,
* in alphabetical order so they're easier to sort through.
*/
davinci_init_wdt();
return 0;
}
arch_initcall(davinci_init_devices);
