cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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gpio15xx.c (3222B)

      1/*
      2 * OMAP15xx specific gpio init
      3 *
      4 * Copyright (C) 2010 Texas Instruments Incorporated - https://www.ti.com/
      5 *
      6 * Author:
      7 *	Charulatha V <charu@ti.com>
      8 *
      9 * This program is free software; you can redistribute it and/or
     10 * modify it under the terms of the GNU General Public License as
     11 * published by the Free Software Foundation version 2.
     12 *
     13 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
     14 * kind, whether express or implied; without even the implied warranty
     15 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     16 * GNU General Public License for more details.
     17 */
     18
     19#include <linux/gpio.h>
     20#include <linux/platform_data/gpio-omap.h>
     21#include <linux/soc/ti/omap1-soc.h>
     22
     23#include "irqs.h"
     24
     25#define OMAP1_MPUIO_VBASE		OMAP1_MPUIO_BASE
     26#define OMAP1510_GPIO_BASE		0xFFFCE000
     27
     28/* gpio1 */
     29static struct resource omap15xx_mpu_gpio_resources[] = {
     30	{
     31		.start	= OMAP1_MPUIO_VBASE,
     32		.end	= OMAP1_MPUIO_VBASE + SZ_2K - 1,
     33		.flags	= IORESOURCE_MEM,
     34	},
     35	{
     36		.start	= INT_MPUIO,
     37		.flags	= IORESOURCE_IRQ,
     38	},
     39};
     40
     41static struct omap_gpio_reg_offs omap15xx_mpuio_regs = {
     42	.revision       = USHRT_MAX,
     43	.direction	= OMAP_MPUIO_IO_CNTL,
     44	.datain		= OMAP_MPUIO_INPUT_LATCH,
     45	.dataout	= OMAP_MPUIO_OUTPUT,
     46	.irqstatus	= OMAP_MPUIO_GPIO_INT,
     47	.irqenable	= OMAP_MPUIO_GPIO_MASKIT,
     48	.irqenable_inv	= true,
     49	.irqctrl	= OMAP_MPUIO_GPIO_INT_EDGE,
     50};
     51
     52static struct omap_gpio_platform_data omap15xx_mpu_gpio_config = {
     53	.is_mpuio		= true,
     54	.bank_width		= 16,
     55	.bank_stride		= 1,
     56	.regs			= &omap15xx_mpuio_regs,
     57};
     58
     59static struct platform_device omap15xx_mpu_gpio = {
     60	.name           = "omap_gpio",
     61	.id             = 0,
     62	.dev            = {
     63		.platform_data = &omap15xx_mpu_gpio_config,
     64	},
     65	.num_resources = ARRAY_SIZE(omap15xx_mpu_gpio_resources),
     66	.resource = omap15xx_mpu_gpio_resources,
     67};
     68
     69/* gpio2 */
     70static struct resource omap15xx_gpio_resources[] = {
     71	{
     72		.start	= OMAP1510_GPIO_BASE,
     73		.end	= OMAP1510_GPIO_BASE + SZ_2K - 1,
     74		.flags	= IORESOURCE_MEM,
     75	},
     76	{
     77		.start	= INT_GPIO_BANK1,
     78		.flags	= IORESOURCE_IRQ,
     79	},
     80};
     81
     82static struct omap_gpio_reg_offs omap15xx_gpio_regs = {
     83	.revision	= USHRT_MAX,
     84	.direction	= OMAP1510_GPIO_DIR_CONTROL,
     85	.datain		= OMAP1510_GPIO_DATA_INPUT,
     86	.dataout	= OMAP1510_GPIO_DATA_OUTPUT,
     87	.irqstatus	= OMAP1510_GPIO_INT_STATUS,
     88	.irqenable	= OMAP1510_GPIO_INT_MASK,
     89	.irqenable_inv	= true,
     90	.irqctrl	= OMAP1510_GPIO_INT_CONTROL,
     91	.pinctrl	= OMAP1510_GPIO_PIN_CONTROL,
     92};
     93
     94static struct omap_gpio_platform_data omap15xx_gpio_config = {
     95	.bank_width		= 16,
     96	.regs                   = &omap15xx_gpio_regs,
     97};
     98
     99static struct platform_device omap15xx_gpio = {
    100	.name           = "omap_gpio",
    101	.id             = 1,
    102	.dev            = {
    103		.platform_data = &omap15xx_gpio_config,
    104	},
    105	.num_resources = ARRAY_SIZE(omap15xx_gpio_resources),
    106	.resource = omap15xx_gpio_resources,
    107};
    108
    109/*
    110 * omap15xx_gpio_init needs to be done before
    111 * machine_init functions access gpio APIs.
    112 * Hence omap15xx_gpio_init is a postcore_initcall.
    113 */
    114static int __init omap15xx_gpio_init(void)
    115{
    116	if (!cpu_is_omap15xx())
    117		return -EINVAL;
    118
    119	platform_device_register(&omap15xx_mpu_gpio);
    120	platform_device_register(&omap15xx_gpio);
    121
    122	return 0;
    123}
    124postcore_initcall(omap15xx_gpio_init);