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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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e04eb14fd2
Support max7312 gpio expander in TTC DKB. Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
163 lines
3.6 KiB
C
163 lines
3.6 KiB
C
/*
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* linux/arch/arm/mach-mmp/ttc_dkb.c
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*
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* Support for the Marvell PXA910-based TTC_DKB Development Platform.
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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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* publishhed by the Free Software Foundation.
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/platform_device.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <linux/mtd/onenand.h>
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#include <linux/interrupt.h>
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#include <linux/i2c/pca953x.h>
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#include <linux/gpio.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/flash.h>
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#include <mach/addr-map.h>
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#include <mach/mfp-pxa910.h>
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#include <mach/pxa910.h>
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#include "common.h"
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#define TTCDKB_GPIO_EXT0(x) (NR_BUILTIN_GPIO + ((x < 0) ? 0 : \
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((x < 16) ? x : 15)))
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#define TTCDKB_GPIO_EXT1(x) (NR_BUILTIN_GPIO + 16 + ((x < 0) ? 0 : \
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((x < 16) ? x : 15)))
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/*
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* 16 board interrupts -- MAX7312 GPIO expander
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* 16 board interrupts -- PCA9575 GPIO expander
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* 24 board interrupts -- 88PM860x PMIC
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*/
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#define TTCDKB_NR_IRQS (IRQ_BOARD_START + 16 + 16 + 24)
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static unsigned long ttc_dkb_pin_config[] __initdata = {
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/* UART2 */
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GPIO47_UART2_RXD,
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GPIO48_UART2_TXD,
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/* DFI */
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DF_IO0_ND_IO0,
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DF_IO1_ND_IO1,
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DF_IO2_ND_IO2,
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DF_IO3_ND_IO3,
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DF_IO4_ND_IO4,
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DF_IO5_ND_IO5,
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DF_IO6_ND_IO6,
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DF_IO7_ND_IO7,
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DF_IO8_ND_IO8,
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DF_IO9_ND_IO9,
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DF_IO10_ND_IO10,
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DF_IO11_ND_IO11,
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DF_IO12_ND_IO12,
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DF_IO13_ND_IO13,
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DF_IO14_ND_IO14,
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DF_IO15_ND_IO15,
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DF_nCS0_SM_nCS2_nCS0,
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DF_ALE_SM_WEn_ND_ALE,
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DF_CLE_SM_OEn_ND_CLE,
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DF_WEn_DF_WEn,
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DF_REn_DF_REn,
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DF_RDY0_DF_RDY0,
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};
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static struct mtd_partition ttc_dkb_onenand_partitions[] = {
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{
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.name = "bootloader",
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.offset = 0,
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.size = SZ_1M,
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.mask_flags = MTD_WRITEABLE,
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}, {
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.name = "reserved",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_128K,
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.mask_flags = MTD_WRITEABLE,
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}, {
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.name = "reserved",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_8M,
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.mask_flags = MTD_WRITEABLE,
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}, {
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.name = "kernel",
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.offset = MTDPART_OFS_APPEND,
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.size = (SZ_2M + SZ_1M),
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.mask_flags = 0,
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}, {
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.name = "filesystem",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_48M,
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.mask_flags = 0,
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}
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};
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static struct onenand_platform_data ttc_dkb_onenand_info = {
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.parts = ttc_dkb_onenand_partitions,
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.nr_parts = ARRAY_SIZE(ttc_dkb_onenand_partitions),
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};
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static struct resource ttc_dkb_resource_onenand[] = {
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[0] = {
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.start = SMC_CS0_PHYS_BASE,
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.end = SMC_CS0_PHYS_BASE + SZ_1M,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct platform_device ttc_dkb_device_onenand = {
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.name = "onenand-flash",
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.id = -1,
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.resource = ttc_dkb_resource_onenand,
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.num_resources = ARRAY_SIZE(ttc_dkb_resource_onenand),
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.dev = {
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.platform_data = &ttc_dkb_onenand_info,
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},
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};
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static struct platform_device *ttc_dkb_devices[] = {
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&ttc_dkb_device_onenand,
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};
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static struct pca953x_platform_data max7312_data[] = {
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{
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.gpio_base = TTCDKB_GPIO_EXT0(0),
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.irq_base = IRQ_BOARD_START,
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},
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};
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static struct i2c_board_info ttc_dkb_i2c_info[] = {
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{
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.type = "max7312",
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.addr = 0x23,
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.irq = IRQ_GPIO(80),
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.platform_data = &max7312_data,
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},
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};
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static void __init ttc_dkb_init(void)
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{
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mfp_config(ARRAY_AND_SIZE(ttc_dkb_pin_config));
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/* on-chip devices */
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pxa910_add_uart(1);
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/* off-chip devices */
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pxa910_add_twsi(0, NULL, ARRAY_AND_SIZE(ttc_dkb_i2c_info));
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platform_add_devices(ARRAY_AND_SIZE(ttc_dkb_devices));
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}
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MACHINE_START(TTC_DKB, "PXA910-based TTC_DKB Development Platform")
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.map_io = mmp_map_io,
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.nr_irqs = TTCDKB_NR_IRQS,
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.init_irq = pxa910_init_irq,
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.timer = &pxa910_timer,
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.init_machine = ttc_dkb_init,
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MACHINE_END
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