f64691b3ab
The davinci timer code currently hardcodes the timer register base addresses, the timer irq numbers, and the timers to use for clock events and clocksource. This won't work for some a new SoC so put those values into the soc_info structure and set them up in the SoC-specific files. Signed-off-by: Mark A. Greer <mgreer@mvista.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
296 lines
6.7 KiB
C
296 lines
6.7 KiB
C
/*
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* mach-davinci/devices.c
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*
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* DaVinci platform device setup/initialization
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/dma-mapping.h>
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#include <linux/io.h>
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#include <asm/mach/map.h>
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#include <mach/hardware.h>
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#include <mach/i2c.h>
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#include <mach/irqs.h>
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#include <mach/cputype.h>
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#include <mach/mux.h>
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#include <mach/edma.h>
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#include <mach/mmc.h>
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#include <mach/time.h>
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#define DAVINCI_I2C_BASE 0x01C21000
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#define DAVINCI_MMCSD0_BASE 0x01E10000
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#define DM355_MMCSD0_BASE 0x01E11000
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#define DM355_MMCSD1_BASE 0x01E00000
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static struct resource i2c_resources[] = {
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{
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.start = DAVINCI_I2C_BASE,
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.end = DAVINCI_I2C_BASE + 0x40,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = IRQ_I2C,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device davinci_i2c_device = {
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.name = "i2c_davinci",
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.id = 1,
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.num_resources = ARRAY_SIZE(i2c_resources),
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.resource = i2c_resources,
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};
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void __init davinci_init_i2c(struct davinci_i2c_platform_data *pdata)
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{
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if (cpu_is_davinci_dm644x())
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davinci_cfg_reg(DM644X_I2C);
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davinci_i2c_device.dev.platform_data = pdata;
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(void) platform_device_register(&davinci_i2c_device);
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}
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#if defined(CONFIG_MMC_DAVINCI) || defined(CONFIG_MMC_DAVINCI_MODULE)
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static u64 mmcsd0_dma_mask = DMA_32BIT_MASK;
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static struct resource mmcsd0_resources[] = {
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{
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/* different on dm355 */
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.start = DAVINCI_MMCSD0_BASE,
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.end = DAVINCI_MMCSD0_BASE + SZ_4K - 1,
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.flags = IORESOURCE_MEM,
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},
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/* IRQs: MMC/SD, then SDIO */
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{
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.start = IRQ_MMCINT,
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.flags = IORESOURCE_IRQ,
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}, {
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/* different on dm355 */
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.start = IRQ_SDIOINT,
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.flags = IORESOURCE_IRQ,
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},
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/* DMA channels: RX, then TX */
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{
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.start = DAVINCI_DMA_MMCRXEVT,
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.flags = IORESOURCE_DMA,
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}, {
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.start = DAVINCI_DMA_MMCTXEVT,
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.flags = IORESOURCE_DMA,
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},
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};
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static struct platform_device davinci_mmcsd0_device = {
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.name = "davinci_mmc",
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.id = 0,
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.dev = {
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.dma_mask = &mmcsd0_dma_mask,
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.coherent_dma_mask = DMA_32BIT_MASK,
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},
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.num_resources = ARRAY_SIZE(mmcsd0_resources),
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.resource = mmcsd0_resources,
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};
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static u64 mmcsd1_dma_mask = DMA_32BIT_MASK;
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static struct resource mmcsd1_resources[] = {
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{
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.start = DM355_MMCSD1_BASE,
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.end = DM355_MMCSD1_BASE + SZ_4K - 1,
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.flags = IORESOURCE_MEM,
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},
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/* IRQs: MMC/SD, then SDIO */
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{
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.start = IRQ_DM355_MMCINT1,
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.flags = IORESOURCE_IRQ,
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}, {
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.start = IRQ_DM355_SDIOINT1,
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.flags = IORESOURCE_IRQ,
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},
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/* DMA channels: RX, then TX */
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{
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.start = 30, /* rx */
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.flags = IORESOURCE_DMA,
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}, {
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.start = 31, /* tx */
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.flags = IORESOURCE_DMA,
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},
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};
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static struct platform_device davinci_mmcsd1_device = {
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.name = "davinci_mmc",
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.id = 1,
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.dev = {
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.dma_mask = &mmcsd1_dma_mask,
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.coherent_dma_mask = DMA_32BIT_MASK,
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},
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.num_resources = ARRAY_SIZE(mmcsd1_resources),
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.resource = mmcsd1_resources,
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};
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void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
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{
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struct platform_device *pdev = NULL;
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if (WARN_ON(cpu_is_davinci_dm646x()))
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return;
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/* REVISIT: update PINMUX, ARM_IRQMUX, and EDMA_EVTMUX here too;
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* for example if MMCSD1 is used for SDIO, maybe DAT2 is unused.
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*
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* FIXME dm6441 (no MMC/SD), dm357 (one), and dm335 (two) are
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* not handled right here ...
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*/
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switch (module) {
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case 1:
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if (!cpu_is_davinci_dm355())
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break;
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/* REVISIT we may not need all these pins if e.g. this
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* is a hard-wired SDIO device...
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*/
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davinci_cfg_reg(DM355_SD1_CMD);
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davinci_cfg_reg(DM355_SD1_CLK);
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davinci_cfg_reg(DM355_SD1_DATA0);
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davinci_cfg_reg(DM355_SD1_DATA1);
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davinci_cfg_reg(DM355_SD1_DATA2);
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davinci_cfg_reg(DM355_SD1_DATA3);
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pdev = &davinci_mmcsd1_device;
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break;
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case 0:
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if (cpu_is_davinci_dm355()) {
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mmcsd0_resources[0].start = DM355_MMCSD0_BASE;
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mmcsd0_resources[0].end = DM355_MMCSD0_BASE + SZ_4K - 1;
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mmcsd0_resources[2].start = IRQ_DM355_SDIOINT0;
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/* expose all 6 MMC0 signals: CLK, CMD, DATA[0..3] */
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davinci_cfg_reg(DM355_MMCSD0);
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/* enable RX EDMA */
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davinci_cfg_reg(DM355_EVT26_MMC0_RX);
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}
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else if (cpu_is_davinci_dm644x()) {
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/* REVISIT: should this be in board-init code? */
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void __iomem *base =
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IO_ADDRESS(DAVINCI_SYSTEM_MODULE_BASE);
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/* Power-on 3.3V IO cells */
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__raw_writel(0, base + DM64XX_VDD3P3V_PWDN);
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/*Set up the pull regiter for MMC */
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davinci_cfg_reg(DM644X_MSTK);
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}
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pdev = &davinci_mmcsd0_device;
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break;
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}
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if (WARN_ON(!pdev))
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return;
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pdev->dev.platform_data = config;
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platform_device_register(pdev);
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}
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#else
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void __init davinci_setup_mmc(int module, struct davinci_mmc_config *config)
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{
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}
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#endif
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/*-------------------------------------------------------------------------*/
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static struct resource wdt_resources[] = {
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{
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.start = 0x01c21c00,
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.end = 0x01c21fff,
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.flags = IORESOURCE_MEM,
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},
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};
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struct platform_device davinci_wdt_device = {
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.name = "watchdog",
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.id = -1,
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.num_resources = ARRAY_SIZE(wdt_resources),
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.resource = wdt_resources,
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};
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static void davinci_init_wdt(void)
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{
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platform_device_register(&davinci_wdt_device);
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}
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/*-------------------------------------------------------------------------*/
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struct davinci_timer_instance davinci_timer_instance[2] = {
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{
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.base = IO_ADDRESS(DAVINCI_TIMER0_BASE),
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.bottom_irq = IRQ_TINT0_TINT12,
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.top_irq = IRQ_TINT0_TINT34,
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},
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{
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.base = IO_ADDRESS(DAVINCI_TIMER1_BASE),
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.bottom_irq = IRQ_TINT1_TINT12,
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.top_irq = IRQ_TINT1_TINT34,
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},
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};
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/*-------------------------------------------------------------------------*/
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#if defined(CONFIG_TI_DAVINCI_EMAC) || defined(CONFIG_TI_DAVINCI_EMAC_MODULE)
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void davinci_init_emac(struct emac_platform_data *pdata)
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{
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DECLARE_MAC_BUF(buf);
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if (cpu_is_davinci_dm644x())
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dm644x_init_emac(pdata);
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else if (cpu_is_davinci_dm646x())
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dm646x_init_emac(pdata);
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/* if valid MAC exists, don't re-register */
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if (is_valid_ether_addr(pdata->mac_addr))
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return;
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else {
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/* Use random MAC if none passed */
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random_ether_addr(pdata->mac_addr);
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printk(KERN_WARNING "%s: using random MAC addr: %s\n",
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__func__, print_mac(buf, pdata->mac_addr));
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}
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}
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#else
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void davinci_init_emac(struct emac_platform_data *unused) {}
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#endif
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/*-------------------------------------------------------------------------*/
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static int __init davinci_init_devices(void)
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{
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/* please keep these calls, and their implementations above,
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* in alphabetical order so they're easier to sort through.
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*/
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davinci_init_wdt();
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return 0;
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}
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arch_initcall(davinci_init_devices);
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