diff options
Diffstat (limited to 'arch/arm/mach-imx/3ds_debugboard.c')
| -rw-r--r-- | arch/arm/mach-imx/3ds_debugboard.c | 207 |
1 files changed, 0 insertions, 207 deletions
diff --git a/arch/arm/mach-imx/3ds_debugboard.c b/arch/arm/mach-imx/3ds_debugboard.c deleted file mode 100644 index 0e018000715a..000000000000 --- a/arch/arm/mach-imx/3ds_debugboard.c +++ /dev/null @@ -1,207 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* - * Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved. - * Copyright (C) 2010 Jason Wang <jason77.wang@gmail.com> - */ - -#include <linux/interrupt.h> -#include <linux/irq.h> -#include <linux/irqdomain.h> -#include <linux/io.h> -#include <linux/platform_device.h> -#include <linux/gpio.h> -#include <linux/module.h> -#include <linux/smsc911x.h> -#include <linux/regulator/machine.h> -#include <linux/regulator/fixed.h> -#include "3ds_debugboard.h" -#include "hardware.h" - -/* LAN9217 ethernet base address */ -#define LAN9217_BASE_ADDR(n) (n + 0x0) -/* External UART */ -#define UARTA_BASE_ADDR(n) (n + 0x8000) -#define UARTB_BASE_ADDR(n) (n + 0x10000) - -#define BOARD_IO_ADDR(n) (n + 0x20000) -/* LED switchs */ -#define LED_SWITCH_REG 0x00 -/* buttons */ -#define SWITCH_BUTTONS_REG 0x08 -/* status, interrupt */ -#define INTR_STATUS_REG 0x10 -#define INTR_MASK_REG 0x38 -#define INTR_RESET_REG 0x20 -/* magic word for debug CPLD */ -#define MAGIC_NUMBER1_REG 0x40 -#define MAGIC_NUMBER2_REG 0x48 -/* CPLD code version */ -#define CPLD_CODE_VER_REG 0x50 -/* magic word for debug CPLD */ -#define MAGIC_NUMBER3_REG 0x58 -/* module reset register*/ -#define MODULE_RESET_REG 0x60 -/* CPU ID and Personality ID */ -#define MCU_BOARD_ID_REG 0x68 - -#define MXC_MAX_EXP_IO_LINES 16 - -/* interrupts like external uart , external ethernet etc*/ -#define EXPIO_INT_ENET 0 -#define EXPIO_INT_XUART_A 1 -#define EXPIO_INT_XUART_B 2 -#define EXPIO_INT_BUTTON_A 3 -#define EXPIO_INT_BUTTON_B 4 - -static void __iomem *brd_io; -static struct irq_domain *domain; - -static struct resource smsc911x_resources[] = { - { - .flags = IORESOURCE_MEM, - } , { - .flags = IORESOURCE_IRQ, - }, -}; - -static struct smsc911x_platform_config smsc911x_config = { - .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW, - .flags = SMSC911X_USE_32BIT | SMSC911X_FORCE_INTERNAL_PHY, -}; - -static struct platform_device smsc_lan9217_device = { - .name = "smsc911x", - .id = -1, - .dev = { - .platform_data = &smsc911x_config, - }, - .num_resources = ARRAY_SIZE(smsc911x_resources), - .resource = smsc911x_resources, -}; - -static void mxc_expio_irq_handler(struct irq_desc *desc) -{ - u32 imr_val; - u32 int_valid; - u32 expio_irq; - - /* irq = gpio irq number */ - desc->irq_data.chip->irq_mask(&desc->irq_data); - - imr_val = imx_readw(brd_io + INTR_MASK_REG); - int_valid = imx_readw(brd_io + INTR_STATUS_REG) & ~imr_val; - - expio_irq = 0; - for (; int_valid != 0; int_valid >>= 1, expio_irq++) { - if ((int_valid & 1) == 0) - continue; - generic_handle_irq(irq_find_mapping(domain, expio_irq)); - } - - desc->irq_data.chip->irq_ack(&desc->irq_data); - desc->irq_data.chip->irq_unmask(&desc->irq_data); -} - -/* - * Disable an expio pin's interrupt by setting the bit in the imr. - * Irq is an expio virtual irq number - */ -static void expio_mask_irq(struct irq_data *d) -{ - u16 reg; - u32 expio = d->hwirq; - - reg = imx_readw(brd_io + INTR_MASK_REG); - reg |= (1 << expio); - imx_writew(reg, brd_io + INTR_MASK_REG); -} - -static void expio_ack_irq(struct irq_data *d) -{ - u32 expio = d->hwirq; - - imx_writew(1 << expio, brd_io + INTR_RESET_REG); - imx_writew(0, brd_io + INTR_RESET_REG); - expio_mask_irq(d); -} - -static void expio_unmask_irq(struct irq_data *d) -{ - u16 reg; - u32 expio = d->hwirq; - - reg = imx_readw(brd_io + INTR_MASK_REG); - reg &= ~(1 << expio); - imx_writew(reg, brd_io + INTR_MASK_REG); -} - -static struct irq_chip expio_irq_chip = { - .irq_ack = expio_ack_irq, - .irq_mask = expio_mask_irq, - .irq_unmask = expio_unmask_irq, -}; - -static struct regulator_consumer_supply dummy_supplies[] = { - REGULATOR_SUPPLY("vdd33a", "smsc911x"), - REGULATOR_SUPPLY("vddvario", "smsc911x"), -}; - -int __init mxc_expio_init(u32 base, u32 intr_gpio) -{ - u32 p_irq = gpio_to_irq(intr_gpio); - int irq_base; - int i; - - brd_io = ioremap(BOARD_IO_ADDR(base), SZ_4K); - if (brd_io == NULL) - return -ENOMEM; - - if ((imx_readw(brd_io + MAGIC_NUMBER1_REG) != 0xAAAA) || - (imx_readw(brd_io + MAGIC_NUMBER2_REG) != 0x5555) || - (imx_readw(brd_io + MAGIC_NUMBER3_REG) != 0xCAFE)) { - pr_info("3-Stack Debug board not detected\n"); - iounmap(brd_io); - brd_io = NULL; - return -ENODEV; - } - - pr_info("3-Stack Debug board detected, rev = 0x%04X\n", - readw(brd_io + CPLD_CODE_VER_REG)); - - /* - * Configure INT line as GPIO input - */ - gpio_request(intr_gpio, "expio_pirq"); - gpio_direction_input(intr_gpio); - - /* disable the interrupt and clear the status */ - imx_writew(0, brd_io + INTR_MASK_REG); - imx_writew(0xFFFF, brd_io + INTR_RESET_REG); - imx_writew(0, brd_io + INTR_RESET_REG); - imx_writew(0x1F, brd_io + INTR_MASK_REG); - - irq_base = irq_alloc_descs(-1, 0, MXC_MAX_EXP_IO_LINES, numa_node_id()); - WARN_ON(irq_base < 0); - - domain = irq_domain_add_legacy(NULL, MXC_MAX_EXP_IO_LINES, irq_base, 0, - &irq_domain_simple_ops, NULL); - WARN_ON(!domain); - - for (i = irq_base; i < irq_base + MXC_MAX_EXP_IO_LINES; i++) { - irq_set_chip_and_handler(i, &expio_irq_chip, handle_level_irq); - irq_clear_status_flags(i, IRQ_NOREQUEST); - } - irq_set_irq_type(p_irq, IRQF_TRIGGER_LOW); - irq_set_chained_handler(p_irq, mxc_expio_irq_handler); - - /* Register Lan device on the debugboard */ - regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies)); - - smsc911x_resources[0].start = LAN9217_BASE_ADDR(base); - smsc911x_resources[0].end = LAN9217_BASE_ADDR(base) + 0x100 - 1; - smsc911x_resources[1].start = irq_find_mapping(domain, EXPIO_INT_ENET); - smsc911x_resources[1].end = irq_find_mapping(domain, EXPIO_INT_ENET); - platform_device_register(&smsc_lan9217_device); - - return 0; -} |