561 lines
14 KiB
C
561 lines
14 KiB
C
/*
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* (c) 2010 STMicroelectronics Limited
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*
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* Author: Pawel Moll <pawel.moll@st.com>
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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 version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/init.h>
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#include <linux/gpio.h>
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#include <linux/delay.h>
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#include <linux/platform_device.h>
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#include <linux/ata_platform.h>
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#include <linux/mtd/nand.h>
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#include <linux/mtd/partitions.h>
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#include <linux/stm/emi.h>
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#include <linux/stm/device.h>
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#include <linux/stm/sysconf.h>
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#include <linux/stm/stx5206.h>
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#include <asm/irq-ilc.h>
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/* Note that 5206 documentation defines PIO alternative functions starting
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* from 0. So for the "Pad Manager" use the STX5206_GPIO_FUNCTION defines
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* some other value to describe "generic PIO" mode. */
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#define STX5206_GPIO_FUNCTION -42 /* Forty-two is such a nice number :-* */
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/* EMI resources ---------------------------------------------------------- */
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static int __initdata stx5206_emi_bank_configured[EMI_BANKS];
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static void stx5206_emi_power(struct stm_device_state *device_state,
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enum stm_device_power_state power)
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{
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int i;
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int value = (power == stm_device_power_on) ? 0 : 1;
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stm_device_sysconf_write(device_state, "EMI_PWR", value);
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for (i = 5; i; --i) {
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if (stm_device_sysconf_read(device_state, "EMI_ACK")
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== value)
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break;
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mdelay(10);
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}
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return;
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}
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static struct platform_device stx5206_emi = {
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.name = "emi",
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.id = -1,
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.num_resources = 2,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0, 128 * 1024 * 1024),
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STM_PLAT_RESOURCE_MEM(0xfe700000, 0x874),
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},
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.dev.platform_data = &(struct stm_device_config){
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.sysconfs_num = 2,
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.sysconfs = (struct stm_device_sysconf []){
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STM_DEVICE_SYS_CFG(32, 1, 1, "EMI_PWR"),
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STM_DEVICE_SYS_STA(15, 1, 1, "EMI_ACK"),
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},
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.power = stx5206_emi_power,
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}
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};
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/* PATA resources --------------------------------------------------------- */
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/* EMI A20 = CS1 (active low)
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* EMI A21 = CS0 (active low)
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* EMI A19 = DA2
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* EMI A18 = DA1
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* EMI A17 = DA0 */
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static struct resource stx5206_pata_resources[] = {
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/* I/O base: CS1=N, CS0=A */
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[0] = STM_PLAT_RESOURCE_MEM(1 << 20, 8 << 17),
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/* CTL base: CS1=A, CS0=N, DA2=A, DA1=A, DA0=N */
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[1] = STM_PLAT_RESOURCE_MEM((1 << 21) + (6 << 17), 4),
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/* IRQ */
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[2] = STM_PLAT_RESOURCE_IRQ(-1, -1),
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};
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static struct platform_device stx5206_pata_device = {
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.name = "pata_platform",
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.id = -1,
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.num_resources = ARRAY_SIZE(stx5206_pata_resources),
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.resource = stx5206_pata_resources,
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.dev.platform_data = &(struct pata_platform_info) {
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.ioport_shift = 17,
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},
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};
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void __init stx5206_configure_pata(struct stx5206_pata_config *config)
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{
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unsigned long bank_base;
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if (!config) {
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BUG();
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return;
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}
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BUG_ON(config->emi_bank < 0 || config->emi_bank >= EMI_BANKS);
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BUG_ON(stx5206_emi_bank_configured[config->emi_bank]);
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stx5206_emi_bank_configured[config->emi_bank] = 1;
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bank_base = emi_bank_base(config->emi_bank);
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stx5206_pata_resources[0].start += bank_base;
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stx5206_pata_resources[0].end += bank_base;
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stx5206_pata_resources[1].start += bank_base;
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stx5206_pata_resources[1].end += bank_base;
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stx5206_pata_resources[2].start = config->irq;
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stx5206_pata_resources[2].end = config->irq;
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emi_config_pata(config->emi_bank, config->pc_mode);
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platform_device_register(&stx5206_pata_device);
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}
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static struct platform_device stx5206_spifsm_device = {
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.name = "stm-spi-fsm",
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.id = 0,
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.num_resources = 1,
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.resource = (struct resource[]) {
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{
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.start = 0xfe702000,
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.end = 0xfe7024ff,
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.flags = IORESOURCE_MEM,
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},
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},
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};
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void __init stx5206_configure_spifsm(struct stm_plat_spifsm_data *spifsm_data)
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{
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stx5206_spifsm_device.dev.platform_data = spifsm_data;
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platform_device_register(&stx5206_spifsm_device);
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}
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/* NAND Resources --------------------------------------------------------- */
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static struct platform_device stx5206_nand_emi_device = {
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.name = "stm-nand-emi",
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.dev.platform_data = &(struct stm_plat_nand_emi_data) {
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},
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};
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static struct platform_device stx5206_nand_flex_device = {
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.num_resources = 2,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM_NAMED("flex_mem", 0xFE701000, 0x1000),
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STM_PLAT_RESOURCE_IRQ(evt2irq(0x14c0), -1),
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},
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.dev.platform_data = &(struct stm_plat_nand_flex_data) {
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},
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};
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void __init stx5206_configure_nand(struct stm_nand_config *config)
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{
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struct stm_plat_nand_flex_data *flex_data;
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struct stm_plat_nand_emi_data *emi_data;
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switch (config->driver) {
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case stm_nand_emi:
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/* Configure device for stm-nand-emi driver */
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emi_data = stx5206_nand_emi_device.dev.platform_data;
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emi_data->nr_banks = config->nr_banks;
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emi_data->banks = config->banks;
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emi_data->emi_rbn_gpio = config->rbn.emi_gpio;
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platform_device_register(&stx5206_nand_emi_device);
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break;
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case stm_nand_flex:
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case stm_nand_afm:
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/* Configure device for stm-nand-flex/afm driver */
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flex_data = stx5206_nand_flex_device.dev.platform_data;
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flex_data->nr_banks = config->nr_banks;
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flex_data->banks = config->banks;
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flex_data->flex_rbn_connected = config->rbn.flex_connected;
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stx5206_nand_flex_device.name =
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(config->driver == stm_nand_flex) ?
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"stm-nand-flex" : "stm-nand-afm";
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platform_device_register(&stx5206_nand_flex_device);
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break;
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}
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}
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/* FDMA resources --------------------------------------------------------- */
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static struct stm_plat_fdma_fw_regs stm_fdma_firmware_5206 = {
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.rev_id = 0x8000 + (0x000 << 2), /* 0x8000 */
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.cmd_statn = 0x8000 + (0x450 << 2), /* 0x9140 */
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.req_ctln = 0x8000 + (0x460 << 2), /* 0x9180 */
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.ptrn = 0x8000 + (0x560 << 2), /* 0x9580 */
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.cntn = 0x8000 + (0x562 << 2), /* 0x9588 */
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.saddrn = 0x8000 + (0x563 << 2), /* 0x958c */
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.daddrn = 0x8000 + (0x564 << 2), /* 0x9590 */
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};
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static struct stm_plat_fdma_hw stx5206_fdma_hw = {
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.slim_regs = {
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.id = 0x0000 + (0x000 << 2), /* 0x0000 */
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.ver = 0x0000 + (0x001 << 2), /* 0x0004 */
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.en = 0x0000 + (0x002 << 2), /* 0x0008 */
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.clk_gate = 0x0000 + (0x003 << 2), /* 0x000c */
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},
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.dmem = {
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.offset = 0x8000,
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.size = 0x800 << 2, /* 2048 * 4 = 8192 */
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},
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.periph_regs = {
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.sync_reg = 0x8000 + (0xfe2 << 2), /* 0xbf88 */
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.cmd_sta = 0x8000 + (0xff0 << 2), /* 0xbfc0 */
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.cmd_set = 0x8000 + (0xff1 << 2), /* 0xbfc4 */
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.cmd_clr = 0x8000 + (0xff2 << 2), /* 0xbfc8 */
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.cmd_mask = 0x8000 + (0xff3 << 2), /* 0xbfcc */
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.int_sta = 0x8000 + (0xff4 << 2), /* 0xbfd0 */
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.int_set = 0x8000 + (0xff5 << 2), /* 0xbfd4 */
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.int_clr = 0x8000 + (0xff6 << 2), /* 0xbfd8 */
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.int_mask = 0x8000 + (0xff7 << 2), /* 0xbfdc */
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},
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.imem = {
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.offset = 0xc000,
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.size = 0x1000 << 2, /* 4096 * 4 = 16384 */
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},
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};
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static struct platform_device stx5206_fdma_device = {
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.name = "stm-fdma",
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.id = 0,
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.num_resources = 2,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfe220000, 0x10000),
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STM_PLAT_RESOURCE_IRQ(evt2irq(0x1380), -1),
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},
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.dev.platform_data = &(struct stm_plat_fdma_data) {
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.hw = &stx5206_fdma_hw,
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.fw = &stm_fdma_firmware_5206,
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},
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};
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/* Hardware RNG resources ------------------------------------------------- */
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static struct platform_device stx5206_rng_hwrandom_device = {
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.name = "stm-hwrandom",
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.id = -1,
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.num_resources = 1,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfe250000, 0x1000),
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}
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};
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static struct platform_device stx5206_rng_devrandom_device = {
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.name = "stm-rng",
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.id = -1,
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.num_resources = 1,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfe250000, 0x1000),
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}
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};
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/* Internal temperature sensor resources ---------------------------------- */
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static void stx5206_temp_power(struct stm_device_state *device_state,
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enum stm_device_power_state power)
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{
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int value = (power == stm_device_power_on) ? 1 : 0;
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stm_device_sysconf_write(device_state, "TEMP_PWR", value);
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}
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static struct platform_device stx5206_temp_device = {
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.name = "stm-temp",
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.id = -1,
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.dev.platform_data = &(struct plat_stm_temp_data) {
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.dcorrect = { SYS_CFG, 41, 5, 9 },
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.overflow = { SYS_STA, 12, 8, 8 },
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.data = { SYS_STA, 12, 10, 16 },
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.device_config = &(struct stm_device_config) {
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.sysconfs_num = 1,
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.power = stx5206_temp_power,
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.sysconfs = (struct stm_device_sysconf []){
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STM_DEVICE_SYS_CFG(41, 4, 4, "TEMP_PWR"),
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},
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}
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},
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};
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/* PIO ports resources ---------------------------------------------------- */
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static struct platform_device stx5206_pio_devices[] = {
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[0] = {
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.name = "stm-gpio",
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.id = 0,
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.num_resources = 2,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfd020000, 0x100),
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STM_PLAT_RESOURCE_IRQ(evt2irq(0x1060), -1),
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},
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},
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[1] = {
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.name = "stm-gpio",
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.id = 1,
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.num_resources = 2,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfd021000, 0x100),
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STM_PLAT_RESOURCE_IRQ(evt2irq(0x1040), -1),
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},
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},
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[2] = {
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.name = "stm-gpio",
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.id = 2,
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.num_resources = 2,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfd022000, 0x100),
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STM_PLAT_RESOURCE_IRQ(evt2irq(0x1020), -1),
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},
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},
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[3] = {
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.name = "stm-gpio",
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.id = 3,
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.num_resources = 2,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfd023000, 0x100),
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STM_PLAT_RESOURCE_IRQ(evt2irq(0x1000), -1),
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},
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},
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};
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static int stx5206_pio_config(unsigned gpio,
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enum stm_pad_gpio_direction direction, int function, void *priv)
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{
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int port = stm_gpio_port(gpio);
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int pin = stm_gpio_pin(gpio);
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BUG_ON(port > ARRAY_SIZE(stx5206_pio_devices));
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if (function == STX5206_GPIO_FUNCTION) {
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switch (direction) {
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case stm_pad_gpio_direction_in:
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stm_gpio_direction(gpio, STM_GPIO_DIRECTION_IN);
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break;
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case stm_pad_gpio_direction_out:
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stm_gpio_direction(gpio, STM_GPIO_DIRECTION_OUT);
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break;
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case stm_pad_gpio_direction_bidir:
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stm_gpio_direction(gpio, STM_GPIO_DIRECTION_BIDIR);
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break;
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default:
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BUG();
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break;
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}
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} else if (direction == stm_pad_gpio_direction_in) {
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BUG_ON(function != -1);
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stm_gpio_direction(gpio, STM_GPIO_DIRECTION_IN);
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} else {
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static struct sysconf_field *sys_cfg_16;
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static struct sysconf_field *sys_cfg_17;
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switch (direction) {
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case stm_pad_gpio_direction_out:
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stm_gpio_direction(gpio, STM_GPIO_DIRECTION_ALT_OUT);
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break;
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case stm_pad_gpio_direction_bidir:
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stm_gpio_direction(gpio, STM_GPIO_DIRECTION_ALT_BIDIR);
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break;
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default:
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BUG();
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break;
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}
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if (!sys_cfg_16) {
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sys_cfg_16 = sysconf_claim(SYS_CFG, 16, 0, 31,
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"PIO Config");
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BUG_ON(!sys_cfg_16);
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sys_cfg_17 = sysconf_claim(SYS_CFG, 17, 0, 31,
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"PIO Config");
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BUG_ON(!sys_cfg_17);
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}
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if (port > 0) {
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struct sysconf_field *cfg;
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int offset;
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unsigned int value;
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BUG_ON(function < 0);
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BUG_ON(function > 3);
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if (port < 3)
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cfg = sys_cfg_16;
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else
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cfg = sys_cfg_17;
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offset = 16 * ((port - 1) % 2) + pin;
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value = sysconf_read(cfg);
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value &= ~((1 << (offset + 8)) | (1 << offset));
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value |= ((function >> 1) & 1) << (offset + 8);
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value |= (function & 1) << offset;
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sysconf_write(cfg, value);
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} else {
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BUG_ON(function != 0);
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}
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}
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return 0;
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}
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/* MMC/SD resources ------------------------------------------------------ */
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static struct stm_pad_config stx5206_mmc_pad_config = {
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.gpios_num = 4,
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.gpios = (struct stm_pad_gpio []) {
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STM_PAD_PIO_IN(3, 0, -1), /* Card Detect */
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STM_PAD_PIO_IN(3, 1, -1), /* MMC Write Protection */
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STM_PAD_PIO_OUT(3, 2, 1), /* MMC Power On */
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STM_PAD_PIO_OUT(3, 3, 1), /* MMC LED On */
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},
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};
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static int mmc_pad_resources(struct sdhci_host *sdhci)
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{
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if (!devm_stm_pad_claim(sdhci->mmc->parent, &stx5206_mmc_pad_config,
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dev_name(sdhci->mmc->parent)))
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return -ENODEV;
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return 0;
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}
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static struct sdhci_pltfm_data stx5206_mmc_platform_data = {
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.init = mmc_pad_resources,
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.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
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};
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static struct platform_device stx5206_mmc_device = {
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.name = "sdhci",
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.id = 0,
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.num_resources = 2,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfd106000, 0xa000),
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STM_PLAT_RESOURCE_IRQ_NAMED("mmcirq",
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evt2irq(0xa80), -1),
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},
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.dev = {
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.platform_data = &stx5206_mmc_platform_data,
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}
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};
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void __init stx5206_configure_mmc(void)
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{
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struct sysconf_field *sc;
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sc = sysconf_claim(SYS_CFG, 18, 19, 19, "mmc");
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sysconf_write(sc, 1);
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platform_device_register(&stx5206_mmc_device);
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}
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/* sysconf resources ------------------------------------------------------ */
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static struct platform_device stx5206_sysconf_device = {
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.name = "stm-sysconf",
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.id = -1,
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.num_resources = 1,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfe001000, 0x1e0),
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},
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.dev.platform_data = &(struct stm_plat_sysconf_data) {
|
|
.groups_num = 3,
|
|
.groups = (struct stm_plat_sysconf_group []) {
|
|
PLAT_SYSCONF_GROUP(SYS_DEV, 0x000),
|
|
PLAT_SYSCONF_GROUP(SYS_STA, 0x008),
|
|
PLAT_SYSCONF_GROUP(SYS_CFG, 0x100),
|
|
},
|
|
},
|
|
};
|
|
|
|
|
|
|
|
/* Early initialisation-----------------------------------------------------*/
|
|
|
|
/* Initialise devices which are required early in the boot process. */
|
|
void __init stx5206_early_device_init(void)
|
|
{
|
|
struct sysconf_field *sc;
|
|
unsigned long devid;
|
|
unsigned long chip_revision;
|
|
|
|
/* Initialise PIO and sysconf drivers */
|
|
|
|
sysconf_early_init(&stx5206_sysconf_device, 1);
|
|
stm_gpio_early_init(stx5206_pio_devices,
|
|
ARRAY_SIZE(stx5206_pio_devices),
|
|
ILC_FIRST_IRQ + ILC_NR_IRQS);
|
|
stm_pad_init(ARRAY_SIZE(stx5206_pio_devices) * STM_GPIO_PINS_PER_PORT,
|
|
-1, STX5206_GPIO_FUNCTION, stx5206_pio_config);
|
|
|
|
/* Route the GPIO block to the PIOx pads, as by default the
|
|
* SATFE owns them... (why oh why???) */
|
|
sc = sysconf_claim(SYS_CFG, 10, 13, 13, "cfg_satfe_gpio_on_pio");
|
|
sysconf_write(sc, 1);
|
|
|
|
sc = sysconf_claim(SYS_DEV, 0, 0, 31, "devid");
|
|
devid = sysconf_read(sc);
|
|
chip_revision = (devid >> 28) + 1;
|
|
boot_cpu_data.cut_major = chip_revision;
|
|
|
|
printk(KERN_INFO "STx5206 version %ld.x\n", chip_revision);
|
|
|
|
/* We haven't configured the LPC, so the sleep instruction may
|
|
* do bad things. Thus we disable it here. */
|
|
disable_hlt();
|
|
}
|
|
|
|
|
|
|
|
/* Pre-arch initialisation ------------------------------------------------ */
|
|
|
|
static int __init stx5206_postcore_setup(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(stx5206_pio_devices); i++)
|
|
platform_device_register(&stx5206_pio_devices[i]);
|
|
|
|
return platform_device_register(&stx5206_emi);
|
|
}
|
|
postcore_initcall(stx5206_postcore_setup);
|
|
|
|
|
|
|
|
/* Late initialisation ---------------------------------------------------- */
|
|
|
|
static struct platform_device *stx5206_devices[] __initdata = {
|
|
&stx5206_fdma_device,
|
|
&stx5206_sysconf_device,
|
|
&stx5206_rng_hwrandom_device,
|
|
&stx5206_rng_devrandom_device,
|
|
&stx5206_temp_device,
|
|
};
|
|
|
|
static int __init stx5206_devices_setup(void)
|
|
{
|
|
return platform_add_devices(stx5206_devices,
|
|
ARRAY_SIZE(stx5206_devices));
|
|
}
|
|
device_initcall(stx5206_devices_setup);
|