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259 lines
6.4 KiB
259 lines
6.4 KiB
/* |
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* OMAP16xx specific gpio init |
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* |
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* Copyright (C) 2010 Texas Instruments Incorporated - https://www.ti.com/ |
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* |
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* Author: |
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* Charulatha V <[email protected]> |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation version 2. |
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* |
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any |
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* kind, whether express or implied; without even the implied warranty |
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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*/ |
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#include <linux/gpio.h> |
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#include <linux/platform_data/gpio-omap.h> |
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#include <mach/irqs.h> |
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#include "soc.h" |
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#define OMAP1610_GPIO1_BASE 0xfffbe400 |
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#define OMAP1610_GPIO2_BASE 0xfffbec00 |
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#define OMAP1610_GPIO3_BASE 0xfffbb400 |
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#define OMAP1610_GPIO4_BASE 0xfffbbc00 |
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#define OMAP1_MPUIO_VBASE OMAP1_MPUIO_BASE |
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/* smart idle, enable wakeup */ |
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#define SYSCONFIG_WORD 0x14 |
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/* mpu gpio */ |
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static struct resource omap16xx_mpu_gpio_resources[] = { |
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{ |
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.start = OMAP1_MPUIO_VBASE, |
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.end = OMAP1_MPUIO_VBASE + SZ_2K - 1, |
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.flags = IORESOURCE_MEM, |
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}, |
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{ |
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.start = INT_MPUIO, |
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.flags = IORESOURCE_IRQ, |
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}, |
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}; |
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static struct omap_gpio_reg_offs omap16xx_mpuio_regs = { |
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.revision = USHRT_MAX, |
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.direction = OMAP_MPUIO_IO_CNTL, |
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.datain = OMAP_MPUIO_INPUT_LATCH, |
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.dataout = OMAP_MPUIO_OUTPUT, |
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.irqstatus = OMAP_MPUIO_GPIO_INT, |
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.irqenable = OMAP_MPUIO_GPIO_MASKIT, |
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.irqenable_inv = true, |
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.irqctrl = OMAP_MPUIO_GPIO_INT_EDGE, |
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}; |
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static struct omap_gpio_platform_data omap16xx_mpu_gpio_config = { |
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.is_mpuio = true, |
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.bank_width = 16, |
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.bank_stride = 1, |
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.regs = &omap16xx_mpuio_regs, |
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}; |
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static struct platform_device omap16xx_mpu_gpio = { |
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.name = "omap_gpio", |
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.id = 0, |
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.dev = { |
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.platform_data = &omap16xx_mpu_gpio_config, |
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}, |
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.num_resources = ARRAY_SIZE(omap16xx_mpu_gpio_resources), |
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.resource = omap16xx_mpu_gpio_resources, |
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}; |
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/* gpio1 */ |
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static struct resource omap16xx_gpio1_resources[] = { |
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{ |
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.start = OMAP1610_GPIO1_BASE, |
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.end = OMAP1610_GPIO1_BASE + SZ_2K - 1, |
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.flags = IORESOURCE_MEM, |
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}, |
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{ |
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.start = INT_GPIO_BANK1, |
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.flags = IORESOURCE_IRQ, |
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}, |
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}; |
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static struct omap_gpio_reg_offs omap16xx_gpio_regs = { |
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.revision = OMAP1610_GPIO_REVISION, |
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.direction = OMAP1610_GPIO_DIRECTION, |
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.set_dataout = OMAP1610_GPIO_SET_DATAOUT, |
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.clr_dataout = OMAP1610_GPIO_CLEAR_DATAOUT, |
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.datain = OMAP1610_GPIO_DATAIN, |
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.dataout = OMAP1610_GPIO_DATAOUT, |
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.irqstatus = OMAP1610_GPIO_IRQSTATUS1, |
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.irqenable = OMAP1610_GPIO_IRQENABLE1, |
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.set_irqenable = OMAP1610_GPIO_SET_IRQENABLE1, |
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.clr_irqenable = OMAP1610_GPIO_CLEAR_IRQENABLE1, |
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.wkup_en = OMAP1610_GPIO_WAKEUPENABLE, |
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.edgectrl1 = OMAP1610_GPIO_EDGE_CTRL1, |
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.edgectrl2 = OMAP1610_GPIO_EDGE_CTRL2, |
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}; |
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static struct omap_gpio_platform_data omap16xx_gpio1_config = { |
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.bank_width = 16, |
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.regs = &omap16xx_gpio_regs, |
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}; |
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static struct platform_device omap16xx_gpio1 = { |
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.name = "omap_gpio", |
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.id = 1, |
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.dev = { |
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.platform_data = &omap16xx_gpio1_config, |
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}, |
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.num_resources = ARRAY_SIZE(omap16xx_gpio1_resources), |
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.resource = omap16xx_gpio1_resources, |
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}; |
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/* gpio2 */ |
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static struct resource omap16xx_gpio2_resources[] = { |
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{ |
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.start = OMAP1610_GPIO2_BASE, |
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.end = OMAP1610_GPIO2_BASE + SZ_2K - 1, |
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.flags = IORESOURCE_MEM, |
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}, |
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{ |
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.start = INT_1610_GPIO_BANK2, |
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.flags = IORESOURCE_IRQ, |
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}, |
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}; |
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static struct omap_gpio_platform_data omap16xx_gpio2_config = { |
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.bank_width = 16, |
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.regs = &omap16xx_gpio_regs, |
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}; |
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static struct platform_device omap16xx_gpio2 = { |
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.name = "omap_gpio", |
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.id = 2, |
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.dev = { |
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.platform_data = &omap16xx_gpio2_config, |
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}, |
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.num_resources = ARRAY_SIZE(omap16xx_gpio2_resources), |
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.resource = omap16xx_gpio2_resources, |
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}; |
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/* gpio3 */ |
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static struct resource omap16xx_gpio3_resources[] = { |
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{ |
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.start = OMAP1610_GPIO3_BASE, |
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.end = OMAP1610_GPIO3_BASE + SZ_2K - 1, |
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.flags = IORESOURCE_MEM, |
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}, |
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{ |
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.start = INT_1610_GPIO_BANK3, |
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.flags = IORESOURCE_IRQ, |
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}, |
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}; |
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static struct omap_gpio_platform_data omap16xx_gpio3_config = { |
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.bank_width = 16, |
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.regs = &omap16xx_gpio_regs, |
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}; |
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static struct platform_device omap16xx_gpio3 = { |
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.name = "omap_gpio", |
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.id = 3, |
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.dev = { |
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.platform_data = &omap16xx_gpio3_config, |
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}, |
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.num_resources = ARRAY_SIZE(omap16xx_gpio3_resources), |
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.resource = omap16xx_gpio3_resources, |
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}; |
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/* gpio4 */ |
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static struct resource omap16xx_gpio4_resources[] = { |
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{ |
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.start = OMAP1610_GPIO4_BASE, |
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.end = OMAP1610_GPIO4_BASE + SZ_2K - 1, |
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.flags = IORESOURCE_MEM, |
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}, |
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{ |
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.start = INT_1610_GPIO_BANK4, |
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.flags = IORESOURCE_IRQ, |
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}, |
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}; |
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static struct omap_gpio_platform_data omap16xx_gpio4_config = { |
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.bank_width = 16, |
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.regs = &omap16xx_gpio_regs, |
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}; |
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static struct platform_device omap16xx_gpio4 = { |
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.name = "omap_gpio", |
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.id = 4, |
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.dev = { |
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.platform_data = &omap16xx_gpio4_config, |
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}, |
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.num_resources = ARRAY_SIZE(omap16xx_gpio4_resources), |
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.resource = omap16xx_gpio4_resources, |
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}; |
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static struct platform_device *omap16xx_gpio_dev[] __initdata = { |
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&omap16xx_mpu_gpio, |
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&omap16xx_gpio1, |
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&omap16xx_gpio2, |
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&omap16xx_gpio3, |
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&omap16xx_gpio4, |
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}; |
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/* |
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* omap16xx_gpio_init needs to be done before |
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* machine_init functions access gpio APIs. |
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* Hence omap16xx_gpio_init is a postcore_initcall. |
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*/ |
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static int __init omap16xx_gpio_init(void) |
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{ |
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int i; |
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void __iomem *base; |
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struct resource *res; |
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struct platform_device *pdev; |
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struct omap_gpio_platform_data *pdata; |
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if (!cpu_is_omap16xx()) |
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return -EINVAL; |
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/* |
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* Enable system clock for GPIO module. |
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* The CAM_CLK_CTRL *is* really the right place. |
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*/ |
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omap_writel(omap_readl(ULPD_CAM_CLK_CTRL) | 0x04, |
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ULPD_CAM_CLK_CTRL); |
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for (i = 0; i < ARRAY_SIZE(omap16xx_gpio_dev); i++) { |
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pdev = omap16xx_gpio_dev[i]; |
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pdata = pdev->dev.platform_data; |
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
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if (unlikely(!res)) { |
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dev_err(&pdev->dev, "Invalid mem resource.\n"); |
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return -ENODEV; |
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} |
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base = ioremap(res->start, resource_size(res)); |
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if (unlikely(!base)) { |
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dev_err(&pdev->dev, "ioremap failed.\n"); |
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return -ENOMEM; |
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} |
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__raw_writel(SYSCONFIG_WORD, base + OMAP1610_GPIO_SYSCONFIG); |
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iounmap(base); |
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platform_device_register(omap16xx_gpio_dev[i]); |
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} |
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return 0; |
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} |
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postcore_initcall(omap16xx_gpio_init);
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