mirror of
https://github.com/edk2-porting/linux-next.git
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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 = "omap1-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("mmci-omap", 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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