90c62bf08f
Add low-level initialization for hsmmc controller. Merged into this patch patch are various improvments and board support by Grazvydas Ignotas and David Brownell. Also change wire4 to be wires, as some newer controllers support 8 data lines. Cc: Pierre Ossman <drzeus-mmc@drzeus.cx> Signed-off-by: Grazvydas Ignotas <notasas@gmail.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Tony Lindgren <tony@atomide.com>
265 lines
6.4 KiB
C
265 lines
6.4 KiB
C
/*
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* linux/arch/arm/mach-omap1/devices.c
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*
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* OMAP1 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/io.h>
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#include <mach/hardware.h>
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#include <asm/mach/map.h>
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#include <mach/tc.h>
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#include <mach/board.h>
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#include <mach/mux.h>
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#include <mach/gpio.h>
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#include <mach/mmc.h>
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/*-------------------------------------------------------------------------*/
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#if defined(CONFIG_RTC_DRV_OMAP) || defined(CONFIG_RTC_DRV_OMAP_MODULE)
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#define OMAP_RTC_BASE 0xfffb4800
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static struct resource rtc_resources[] = {
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{
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.start = OMAP_RTC_BASE,
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.end = OMAP_RTC_BASE + 0x5f,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = INT_RTC_TIMER,
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.flags = IORESOURCE_IRQ,
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},
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{
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.start = INT_RTC_ALARM,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device omap_rtc_device = {
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.name = "omap_rtc",
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.id = -1,
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.num_resources = ARRAY_SIZE(rtc_resources),
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.resource = rtc_resources,
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};
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static void omap_init_rtc(void)
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{
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(void) platform_device_register(&omap_rtc_device);
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}
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#else
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static inline void omap_init_rtc(void) {}
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#endif
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#if defined(CONFIG_OMAP_DSP) || defined(CONFIG_OMAP_DSP_MODULE)
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#if defined(CONFIG_ARCH_OMAP15XX)
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# define OMAP1_MBOX_SIZE 0x23
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# define INT_DSP_MAILBOX1 INT_1510_DSP_MAILBOX1
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#elif defined(CONFIG_ARCH_OMAP16XX)
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# define OMAP1_MBOX_SIZE 0x2f
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# define INT_DSP_MAILBOX1 INT_1610_DSP_MAILBOX1
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#endif
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#define OMAP1_MBOX_BASE IO_ADDRESS(OMAP16XX_MAILBOX_BASE)
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static struct resource mbox_resources[] = {
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{
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.start = OMAP1_MBOX_BASE,
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.end = OMAP1_MBOX_BASE + OMAP1_MBOX_SIZE,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = INT_DSP_MAILBOX1,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device mbox_device = {
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.name = "mailbox",
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.id = -1,
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.num_resources = ARRAY_SIZE(mbox_resources),
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.resource = mbox_resources,
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};
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static inline void omap_init_mbox(void)
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{
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platform_device_register(&mbox_device);
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}
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#else
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static inline void omap_init_mbox(void) { }
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#endif
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/*-------------------------------------------------------------------------*/
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#if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
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static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller,
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int controller_nr)
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{
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if (controller_nr == 0) {
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omap_cfg_reg(MMC_CMD);
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omap_cfg_reg(MMC_CLK);
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omap_cfg_reg(MMC_DAT0);
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if (cpu_is_omap1710()) {
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omap_cfg_reg(M15_1710_MMC_CLKI);
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omap_cfg_reg(P19_1710_MMC_CMDDIR);
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omap_cfg_reg(P20_1710_MMC_DATDIR0);
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}
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if (mmc_controller->slots[0].wires == 4) {
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omap_cfg_reg(MMC_DAT1);
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/* NOTE: DAT2 can be on W10 (here) or M15 */
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if (!mmc_controller->slots[0].nomux)
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omap_cfg_reg(MMC_DAT2);
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omap_cfg_reg(MMC_DAT3);
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}
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}
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/* Block 2 is on newer chips, and has many pinout options */
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if (cpu_is_omap16xx() && controller_nr == 1) {
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if (!mmc_controller->slots[1].nomux) {
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omap_cfg_reg(Y8_1610_MMC2_CMD);
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omap_cfg_reg(Y10_1610_MMC2_CLK);
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omap_cfg_reg(R18_1610_MMC2_CLKIN);
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omap_cfg_reg(W8_1610_MMC2_DAT0);
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if (mmc_controller->slots[1].wires == 4) {
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omap_cfg_reg(V8_1610_MMC2_DAT1);
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omap_cfg_reg(W15_1610_MMC2_DAT2);
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omap_cfg_reg(R10_1610_MMC2_DAT3);
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}
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/* These are needed for the level shifter */
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omap_cfg_reg(V9_1610_MMC2_CMDDIR);
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omap_cfg_reg(V5_1610_MMC2_DATDIR0);
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omap_cfg_reg(W19_1610_MMC2_DATDIR1);
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}
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/* Feedback clock must be set on OMAP-1710 MMC2 */
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if (cpu_is_omap1710())
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omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
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MOD_CONF_CTRL_1);
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}
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}
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void __init omap1_init_mmc(struct omap_mmc_platform_data **mmc_data,
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int nr_controllers)
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{
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int i;
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for (i = 0; i < nr_controllers; i++) {
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unsigned long base, size;
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unsigned int irq = 0;
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if (!mmc_data[i])
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continue;
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omap1_mmc_mux(mmc_data[i], i);
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switch (i) {
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case 0:
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base = OMAP1_MMC1_BASE;
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irq = INT_MMC;
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break;
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case 1:
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if (!cpu_is_omap16xx())
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return;
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base = OMAP1_MMC2_BASE;
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irq = INT_1610_MMC2;
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break;
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default:
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continue;
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}
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size = OMAP1_MMC_SIZE;
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omap_mmc_add(i, base, size, irq, mmc_data[i]);
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};
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}
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#endif
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/*-------------------------------------------------------------------------*/
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#if defined(CONFIG_OMAP_STI)
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#define OMAP1_STI_BASE 0xfffea000
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#define OMAP1_STI_CHANNEL_BASE (OMAP1_STI_BASE + 0x400)
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static struct resource sti_resources[] = {
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{
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.start = OMAP1_STI_BASE,
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.end = OMAP1_STI_BASE + SZ_1K - 1,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = OMAP1_STI_CHANNEL_BASE,
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.end = OMAP1_STI_CHANNEL_BASE + SZ_1K - 1,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = INT_1610_STI,
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.flags = IORESOURCE_IRQ,
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}
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};
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static struct platform_device sti_device = {
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.name = "sti",
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.id = -1,
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.num_resources = ARRAY_SIZE(sti_resources),
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.resource = sti_resources,
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};
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static inline void omap_init_sti(void)
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{
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platform_device_register(&sti_device);
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}
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#else
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static inline void omap_init_sti(void) {}
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#endif
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/*-------------------------------------------------------------------------*/
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/*
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* This gets called after board-specific INIT_MACHINE, and initializes most
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* on-chip peripherals accessible on this board (except for few like USB):
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*
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* (a) Does any "standard config" pin muxing needed. Board-specific
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* code will have muxed GPIO pins and done "nonstandard" setup;
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* that code could live in the boot loader.
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* (b) Populating board-specific platform_data with the data drivers
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* rely on to handle wiring variations.
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* (c) Creating platform devices as meaningful on this board and
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* with this kernel configuration.
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*
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* Claiming GPIOs, and setting their direction and initial values, is the
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* responsibility of the device drivers. So is responding to probe().
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*
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* Board-specific knowlege like creating devices or pin setup is to be
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* kept out of drivers as much as possible. In particular, pin setup
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* may be handled by the boot loader, and drivers should expect it will
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* normally have been done by the time they're probed.
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*/
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static int __init omap1_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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omap_init_mbox();
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omap_init_rtc();
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omap_init_sti();
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return 0;
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}
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arch_initcall(omap1_init_devices);
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