CoCalc -- board-apsh4ad0a.c

GitHub Repository: torvalds/linux
Path: blob/master/arch/sh/boards/board-apsh4ad0a.c
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// SPDX-License-Identifier: GPL-2.0
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/*
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 * ALPHAPROJECT AP-SH4AD-0A Support.
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 *
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 * Copyright (C) 2010 ALPHAPROJECT Co.,Ltd.
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 * Copyright (C) 2010  Matt Fleming
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 * Copyright (C) 2010  Paul Mundt
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 */
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include <linux/regulator/fixed.h>
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#include <linux/regulator/machine.h>
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#include <linux/smsc911x.h>
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#include <linux/irq.h>
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#include <linux/clk.h>
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#include <asm/machvec.h>
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#include <linux/sizes.h>
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/* Dummy supplies, where voltage doesn't matter */
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static struct regulator_consumer_supply dummy_supplies[] = {
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	REGULATOR_SUPPLY("vddvario", "smsc911x"),
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	REGULATOR_SUPPLY("vdd33a", "smsc911x"),
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};
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static struct resource smsc911x_resources[] = {
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	[0] = {
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		.name		= "smsc911x-memory",
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		.start		= 0xA4000000,
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		.end		= 0xA4000000 + SZ_256 - 1,
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		.flags		= IORESOURCE_MEM,
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	},
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	[1] = {
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		.name		= "smsc911x-irq",
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		.start		= evt2irq(0x200),
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		.end		= evt2irq(0x200),
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		.flags		= IORESOURCE_IRQ,
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	},
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};
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static struct smsc911x_platform_config smsc911x_config = {
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	.irq_polarity	= SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
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	.irq_type	= SMSC911X_IRQ_TYPE_OPEN_DRAIN,
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	.flags		= SMSC911X_USE_16BIT,
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	.phy_interface	= PHY_INTERFACE_MODE_MII,
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};
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static struct platform_device smsc911x_device = {
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	.name		= "smsc911x",
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	.id		= -1,
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	.num_resources	= ARRAY_SIZE(smsc911x_resources),
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	.resource	= smsc911x_resources,
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	.dev = {
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		.platform_data = &smsc911x_config,
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	},
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};
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static struct platform_device *apsh4ad0a_devices[] __initdata = {
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	&smsc911x_device,
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};
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static int __init apsh4ad0a_devices_setup(void)
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{
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	regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
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	return platform_add_devices(apsh4ad0a_devices,
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				    ARRAY_SIZE(apsh4ad0a_devices));
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}
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device_initcall(apsh4ad0a_devices_setup);
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static int apsh4ad0a_mode_pins(void)
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{
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	int value = 0;
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	/* These are the factory default settings of SW1 and SW2.
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	 * If you change these dip switches then you will need to
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	 * adjust the values below as well.
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	 */
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	value |=  MODE_PIN0;  /* Clock Mode 3 */
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	value |=  MODE_PIN1;
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	value &= ~MODE_PIN2;
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	value &= ~MODE_PIN3;
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	value &= ~MODE_PIN4;  /* 16-bit Area0 bus width  */
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	value |=  MODE_PIN5;
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	value |=  MODE_PIN6;
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	value |=  MODE_PIN7;  /* Normal mode */
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	value |=  MODE_PIN8;  /* Little Endian */
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	value |=  MODE_PIN9;  /* Crystal resonator */
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	value &= ~MODE_PIN10; /* 29-bit address mode */
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	value &= ~MODE_PIN11; /* PCI-E Root port */
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	value &= ~MODE_PIN12; /* 4 lane + 1 lane */
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	value |=  MODE_PIN13; /* AUD Enable */
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	value &= ~MODE_PIN14; /* Normal Operation */
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	return value;
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}
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static int apsh4ad0a_clk_init(void)
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{
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	struct clk *clk;
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	int ret;
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	clk = clk_get(NULL, "extal");
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	if (IS_ERR(clk))
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		return PTR_ERR(clk);
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	ret = clk_set_rate(clk, 33333000);
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	clk_put(clk);
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	return ret;
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}
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/* Initialize the board */
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static void __init apsh4ad0a_setup(char **cmdline_p)
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{
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	pr_info("Alpha Project AP-SH4AD-0A support:\n");
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}
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static void __init apsh4ad0a_init_irq(void)
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{
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	plat_irq_setup_pins(IRQ_MODE_IRQ3210);
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}
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/*
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 * The Machine Vector
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 */
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static struct sh_machine_vector mv_apsh4ad0a __initmv = {
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	.mv_name		= "AP-SH4AD-0A",
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	.mv_setup		= apsh4ad0a_setup,
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	.mv_mode_pins		= apsh4ad0a_mode_pins,
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	.mv_clk_init		= apsh4ad0a_clk_init,
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	.mv_init_irq		= apsh4ad0a_init_irq,
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};
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