488 lines
12 KiB
C
488 lines
12 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/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/pad.h>
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#include <linux/stm/sysconf.h>
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#include <linux/stm/device.h>
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#include <linux/stm/emi.h>
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#include <linux/stm/stx7111.h>
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#include <asm/irq-ilc.h>
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/* EMI resources ---------------------------------------------------------- */
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static void stx7111_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 stx7111_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 = stx7111_emi_power,
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}
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};
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/* NAND Resources --------------------------------------------------------- */
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static struct platform_device stx7111_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 stx7111_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 stx7111_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 = stx7111_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(&stx7111_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 = stx7111_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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stx7111_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(&stx7111_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_7111 = {
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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 stx7111_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 stm_plat_fdma_data stx7111_fdma_platform_data = {
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.hw = &stx7111_fdma_hw,
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.fw = &stm_fdma_firmware_7111,
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};
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static struct platform_device stx7111_fdma_devices[] = {
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{
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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 = &stx7111_fdma_platform_data,
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}, {
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.name = "stm-fdma",
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.id = 1,
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.num_resources = 2,
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.resource = (struct resource[2]) {
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STM_PLAT_RESOURCE_MEM(0xfe410000, 0x10000),
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STM_PLAT_RESOURCE_IRQ(evt2irq(0x13a0), -1),
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},
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.dev.platform_data = &stx7111_fdma_platform_data,
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}
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};
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static struct platform_device stx7111_fdma_xbar_device = {
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.name = "stm-fdma-xbar",
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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(0xfe420000, 0x1000),
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},
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};
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/* Hardware RNG resources ------------------------------------------------- */
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static struct platform_device stx7111_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 stx7111_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 stx7111_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 stx7111_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 = stx7111_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 stx7111_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(0xc00), -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(0xc80), -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(0xd00), -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(0x1060), -1),
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},
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},
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[4] = {
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.name = "stm-gpio",
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.id = 4,
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.num_resources = 2,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfd024000, 0x100),
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STM_PLAT_RESOURCE_IRQ(evt2irq(0x1040), -1),
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},
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},
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[5] = {
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.name = "stm-gpio",
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.id = 5,
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.num_resources = 2,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfd025000, 0x100),
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STM_PLAT_RESOURCE_IRQ(evt2irq(0x1020), -1),
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},
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},
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[6] = {
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.name = "stm-gpio",
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.id = 6,
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.num_resources = 2,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfd026000, 0x100),
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STM_PLAT_RESOURCE_IRQ(evt2irq(0x1000), -1),
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},
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},
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/* Standalone PIO blocks */
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/* All the following block use the same interrupt, which is
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* defined as a separate platform device below */
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[7] = {
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.name = "stm-gpio",
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.id = 7,
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.num_resources = 1,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfe010000, 0x100),
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},
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},
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[8] = {
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.name = "stm-gpio",
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.id = 8,
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.num_resources = 1,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfe011000, 0x100),
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},
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},
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[9] = {
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.name = "stm-gpio",
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.id = 9,
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.num_resources = 1,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfe012000, 0x100),
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},
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},
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[10] = {
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.name = "stm-gpio",
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.id = 10,
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.num_resources = 1,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfe013000, 0x100),
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},
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},
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[11] = {
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.name = "stm-gpio",
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.id = 11,
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.num_resources = 1,
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.resource = (struct resource[]) {
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STM_PLAT_RESOURCE_MEM(0xfe014000, 0x100),
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},
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},
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};
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static struct platform_device stx7111_pio_irqmux_device = {
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.name = "stm-gpio-irqmux",
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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(0xfe01f080, 0x4),
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STM_PLAT_RESOURCE_IRQ(evt2irq(0xbc0), -1),
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},
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.dev.platform_data = &(struct stm_plat_pio_irqmux_data) {
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.port_first = 7,
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.ports_num = 5,
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}
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};
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static int stx7111_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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switch (direction) {
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case 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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break;
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case stm_pad_gpio_direction_out:
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BUG_ON(function < 0);
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BUG_ON(function > 1);
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stm_gpio_direction(gpio, function ?
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STM_GPIO_DIRECTION_ALT_OUT :
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STM_GPIO_DIRECTION_OUT);
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break;
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case stm_pad_gpio_direction_bidir:
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BUG_ON(function < 0);
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BUG_ON(function > 1);
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stm_gpio_direction(gpio, function ?
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STM_GPIO_DIRECTION_ALT_BIDIR :
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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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return 0;
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}
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/* sysconf resources ------------------------------------------------------ */
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static struct platform_device stx7111_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) {
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.groups_num = 3,
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.groups = (struct stm_plat_sysconf_group []) {
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PLAT_SYSCONF_GROUP(SYS_DEV, 0x000),
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PLAT_SYSCONF_GROUP(SYS_STA, 0x008),
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PLAT_SYSCONF_GROUP(SYS_CFG, 0x100),
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},
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},
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};
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/* Early initialisation-----------------------------------------------------*/
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/* Initialise devices which are required early in the boot process. */
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void __init stx7111_early_device_init(void)
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{
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struct sysconf_field *sc;
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unsigned long devid;
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unsigned long chip_revision;
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/* Initialise PIO and sysconf drivers */
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sysconf_early_init(&stx7111_sysconf_device, 1);
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stm_gpio_early_init(stx7111_pio_devices,
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ARRAY_SIZE(stx7111_pio_devices),
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ILC_FIRST_IRQ + ILC_NR_IRQS);
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stm_pad_init(ARRAY_SIZE(stx7111_pio_devices) * STM_GPIO_PINS_PER_PORT,
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-1, 0, stx7111_pio_config);
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sc = sysconf_claim(SYS_DEV, 0, 0, 31, "devid");
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devid = sysconf_read(sc);
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chip_revision = (devid >> 28) + 1;
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boot_cpu_data.cut_major = chip_revision;
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printk(KERN_INFO "STx7111 version %ld.x\n", chip_revision);
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/* We haven't configured the LPC, so the sleep instruction may
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* do bad things. Thus we disable it here. */
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disable_hlt();
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}
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/* Pre-arch initialisation ------------------------------------------------ */
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static int __init stx7111_postcore_setup(void)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(stx7111_pio_devices); i++)
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platform_device_register(&stx7111_pio_devices[i]);
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platform_device_register(&stx7111_pio_irqmux_device);
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return platform_device_register(&stx7111_emi);
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}
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postcore_initcall(stx7111_postcore_setup);
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/* Late initialisation ---------------------------------------------------- */
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static struct platform_device *stx7111_devices[] __initdata = {
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&stx7111_fdma_devices[0],
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&stx7111_fdma_devices[1],
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&stx7111_fdma_xbar_device,
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&stx7111_sysconf_device,
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&stx7111_rng_hwrandom_device,
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&stx7111_rng_devrandom_device,
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&stx7111_temp_device,
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};
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static int __init stx7111_devices_setup(void)
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{
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return platform_add_devices(stx7111_devices,
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ARRAY_SIZE(stx7111_devices));
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}
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device_initcall(stx7111_devices_setup);
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