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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
162 lines
4 KiB
C
162 lines
4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* arch/arm/mach-ep93xx/snappercl15.c
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* Bluewater Systems Snapper CL15 system module
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*
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* Copyright (C) 2009 Bluewater Systems Ltd
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* Author: Ryan Mallon
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*
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* NAND code adapted from driver by:
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* Andre Renaud <andre@bluewatersys.com>
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* James R. McKaskill
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*/
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#include <linux/platform_device.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/io.h>
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#include <linux/i2c.h>
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#include <linux/fb.h>
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#include <linux/mtd/platnand.h>
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#include "hardware.h"
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#include <linux/platform_data/video-ep93xx.h>
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#include "gpio-ep93xx.h"
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include "soc.h"
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#define SNAPPERCL15_NAND_BASE (EP93XX_CS7_PHYS_BASE + SZ_16M)
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#define SNAPPERCL15_NAND_WPN (1 << 8) /* Write protect (active low) */
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#define SNAPPERCL15_NAND_ALE (1 << 9) /* Address latch */
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#define SNAPPERCL15_NAND_CLE (1 << 10) /* Command latch */
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#define SNAPPERCL15_NAND_CEN (1 << 11) /* Chip enable (active low) */
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#define SNAPPERCL15_NAND_RDY (1 << 14) /* Device ready */
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#define NAND_CTRL_ADDR(chip) (chip->legacy.IO_ADDR_W + 0x40)
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static void snappercl15_nand_cmd_ctrl(struct nand_chip *chip, int cmd,
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unsigned int ctrl)
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{
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static u16 nand_state = SNAPPERCL15_NAND_WPN;
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u16 set;
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if (ctrl & NAND_CTRL_CHANGE) {
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set = SNAPPERCL15_NAND_CEN | SNAPPERCL15_NAND_WPN;
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if (ctrl & NAND_NCE)
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set &= ~SNAPPERCL15_NAND_CEN;
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if (ctrl & NAND_CLE)
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set |= SNAPPERCL15_NAND_CLE;
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if (ctrl & NAND_ALE)
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set |= SNAPPERCL15_NAND_ALE;
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nand_state &= ~(SNAPPERCL15_NAND_CEN |
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SNAPPERCL15_NAND_CLE |
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SNAPPERCL15_NAND_ALE);
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nand_state |= set;
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__raw_writew(nand_state, NAND_CTRL_ADDR(chip));
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}
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if (cmd != NAND_CMD_NONE)
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__raw_writew((cmd & 0xff) | nand_state,
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chip->legacy.IO_ADDR_W);
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}
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static int snappercl15_nand_dev_ready(struct nand_chip *chip)
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{
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return !!(__raw_readw(NAND_CTRL_ADDR(chip)) & SNAPPERCL15_NAND_RDY);
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}
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static struct mtd_partition snappercl15_nand_parts[] = {
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{
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.name = "Kernel",
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.offset = 0,
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.size = SZ_2M,
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},
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{
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.name = "Filesystem",
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.offset = MTDPART_OFS_APPEND,
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.size = MTDPART_SIZ_FULL,
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},
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};
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static struct platform_nand_data snappercl15_nand_data = {
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.chip = {
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.nr_chips = 1,
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.partitions = snappercl15_nand_parts,
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.nr_partitions = ARRAY_SIZE(snappercl15_nand_parts),
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.chip_delay = 25,
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},
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.ctrl = {
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.dev_ready = snappercl15_nand_dev_ready,
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.cmd_ctrl = snappercl15_nand_cmd_ctrl,
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},
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};
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static struct resource snappercl15_nand_resource[] = {
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{
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.start = SNAPPERCL15_NAND_BASE,
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.end = SNAPPERCL15_NAND_BASE + SZ_4K - 1,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct platform_device snappercl15_nand_device = {
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.name = "gen_nand",
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.id = -1,
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.dev.platform_data = &snappercl15_nand_data,
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.resource = snappercl15_nand_resource,
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.num_resources = ARRAY_SIZE(snappercl15_nand_resource),
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};
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static struct ep93xx_eth_data __initdata snappercl15_eth_data = {
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.phy_id = 1,
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};
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static struct i2c_board_info __initdata snappercl15_i2c_data[] = {
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{
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/* Audio codec */
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I2C_BOARD_INFO("tlv320aic23", 0x1a),
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},
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};
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static struct ep93xxfb_mach_info __initdata snappercl15_fb_info = {
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};
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static struct platform_device snappercl15_audio_device = {
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.name = "snappercl15-audio",
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.id = -1,
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};
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static void __init snappercl15_register_audio(void)
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{
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ep93xx_register_i2s();
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platform_device_register(&snappercl15_audio_device);
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}
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static void __init snappercl15_init_machine(void)
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{
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ep93xx_init_devices();
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ep93xx_register_eth(&snappercl15_eth_data, 1);
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ep93xx_register_i2c(snappercl15_i2c_data,
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ARRAY_SIZE(snappercl15_i2c_data));
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ep93xx_register_fb(&snappercl15_fb_info);
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snappercl15_register_audio();
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platform_device_register(&snappercl15_nand_device);
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}
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MACHINE_START(SNAPPER_CL15, "Bluewater Systems Snapper CL15")
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/* Maintainer: Ryan Mallon */
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.atag_offset = 0x100,
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.map_io = ep93xx_map_io,
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.init_irq = ep93xx_init_irq,
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.init_time = ep93xx_timer_init,
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.init_machine = snappercl15_init_machine,
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.init_late = ep93xx_init_late,
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.restart = ep93xx_restart,
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MACHINE_END
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