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alistair23-linux/arch/arm/mach-imx/mach-mx21ads.c
Linus Walleij 01dc79cd6f
regulator: fixed/gpio: Pull inversion/OD into gpiolib 
This pushes the handling of inversion semantics and open drain
settings to the GPIO descriptor and gpiolib. All affected board
files are also augmented.

This is especially nice since we don't have to have any
confusing flags passed around to the left and right littering
the fixed and GPIO regulator drivers and the regulator core.
It is all just very straight-forward: the core asks the GPIO
line to be asserted or deasserted and gpiolib deals with the
rest depending on how the platform is configured: if the line
is active low, it deals with that, if the line is open drain,
it deals with that too.

Cc: Alexander Shiyan <shc_work@mail.ru> # i.MX boards user
Cc: Haojian Zhuang <haojian.zhuang@gmail.com> # MMP2 maintainer
Cc: Aaro Koskinen <aaro.koskinen@iki.fi> # OMAP1 maintainer
Cc: Tony Lindgren <tony@atomide.com> # OMAP1,2,3 maintainer
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com> # EM-X270 maintainer
Cc: Robert Jarzmik <robert.jarzmik@free.fr> # EZX maintainer
Cc: Philipp Zabel <philipp.zabel@gmail.com> # Magician maintainer
Cc: Petr Cvek <petr.cvek@tul.cz> # Magician
Cc: Robert Jarzmik <robert.jarzmik@free.fr> # PXA
Cc: Paul Parsons <lost.distance@yahoo.com> # hx4700
Cc: Daniel Mack <zonque@gmail.com> # Raumfeld maintainer
Cc: Marc Zyngier <marc.zyngier@arm.com> # Zeus maintainer
Cc: Geert Uytterhoeven <geert+renesas@glider.be> # SuperH pinctrl/GPIO maintainer
Cc: Russell King <rmk+kernel@armlinux.org.uk> # SA1100
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> #OMAP1 Amstrad Delta
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2019-02-06 15:58:29 +00:00

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/*
* Copyright (C) 2000 Deep Blue Solutions Ltd
* Copyright (C) 2002 Shane Nay (shane@minirl.com)
* Copyright 2006-2007 Freescale Semiconductor, Inc. All Rights Reserved.
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/platform_device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/physmap.h>
#include <linux/gpio/driver.h>
#include <linux/gpio/machine.h>
#include <linux/gpio.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/machine.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include "common.h"
#include "devices-imx21.h"
#include "hardware.h"
#include "iomux-mx21.h"
#define MX21ADS_CS8900A_REG (MX21_CS1_BASE_ADDR + 0x000000)
#define MX21ADS_ST16C255_IOBASE_REG (MX21_CS1_BASE_ADDR + 0x200000)
#define MX21ADS_VERSION_REG (MX21_CS1_BASE_ADDR + 0x400000)
#define MX21ADS_IO_REG (MX21_CS1_BASE_ADDR + 0x800000)
#define MX21ADS_MMC_CD IMX_GPIO_NR(4, 25)
#define MX21ADS_CS8900A_IRQ_GPIO IMX_GPIO_NR(5, 11)
#define MX21ADS_MMGPIO_BASE (6 * 32)
/* MX21ADS_IO_REG bit definitions */
#define MX21ADS_IO_SD_WP (MX21ADS_MMGPIO_BASE + 0)
#define MX21ADS_IO_TP6 (MX21ADS_IO_SD_WP)
#define MX21ADS_IO_SW_SEL (MX21ADS_MMGPIO_BASE + 1)
#define MX21ADS_IO_TP7 (MX21ADS_IO_SW_SEL)
#define MX21ADS_IO_RESET_E_UART (MX21ADS_MMGPIO_BASE + 2)
#define MX21ADS_IO_RESET_BASE (MX21ADS_MMGPIO_BASE + 3)
#define MX21ADS_IO_CSI_CTL2 (MX21ADS_MMGPIO_BASE + 4)
#define MX21ADS_IO_CSI_CTL1 (MX21ADS_MMGPIO_BASE + 5)
#define MX21ADS_IO_CSI_CTL0 (MX21ADS_MMGPIO_BASE + 6)
#define MX21ADS_IO_UART1_EN (MX21ADS_MMGPIO_BASE + 7)
#define MX21ADS_IO_UART4_EN (MX21ADS_MMGPIO_BASE + 8)
#define MX21ADS_IO_LCDON (MX21ADS_MMGPIO_BASE + 9)
#define MX21ADS_IO_IRDA_EN (MX21ADS_MMGPIO_BASE + 10)
#define MX21ADS_IO_IRDA_FIR_SEL (MX21ADS_MMGPIO_BASE + 11)
#define MX21ADS_IO_IRDA_MD0_B (MX21ADS_MMGPIO_BASE + 12)
#define MX21ADS_IO_IRDA_MD1 (MX21ADS_MMGPIO_BASE + 13)
#define MX21ADS_IO_LED4_ON (MX21ADS_MMGPIO_BASE + 14)
#define MX21ADS_IO_LED3_ON (MX21ADS_MMGPIO_BASE + 15)
static const int mx21ads_pins[] __initconst = {
/* CS8900A */
(GPIO_PORTE | GPIO_GPIO | GPIO_IN | 11),
/* UART1 */
PE12_PF_UART1_TXD,
PE13_PF_UART1_RXD,
PE14_PF_UART1_CTS,
PE15_PF_UART1_RTS,
/* UART3 (IrDA) - only TXD and RXD */
PE8_PF_UART3_TXD,
PE9_PF_UART3_RXD,
/* UART4 */
PB26_AF_UART4_RTS,
PB28_AF_UART4_TXD,
PB29_AF_UART4_CTS,
PB31_AF_UART4_RXD,
/* LCDC */
PA5_PF_LSCLK,
PA6_PF_LD0,
PA7_PF_LD1,
PA8_PF_LD2,
PA9_PF_LD3,
PA10_PF_LD4,
PA11_PF_LD5,
PA12_PF_LD6,
PA13_PF_LD7,
PA14_PF_LD8,
PA15_PF_LD9,
PA16_PF_LD10,
PA17_PF_LD11,
PA18_PF_LD12,
PA19_PF_LD13,
PA20_PF_LD14,
PA21_PF_LD15,
PA22_PF_LD16,
PA24_PF_REV, /* Sharp panel dedicated signal */
PA25_PF_CLS, /* Sharp panel dedicated signal */
PA26_PF_PS, /* Sharp panel dedicated signal */
PA27_PF_SPL_SPR, /* Sharp panel dedicated signal */
PA28_PF_HSYNC,
PA29_PF_VSYNC,
PA30_PF_CONTRAST,
PA31_PF_OE_ACD,
/* MMC/SDHC */
PE18_PF_SD1_D0,
PE19_PF_SD1_D1,
PE20_PF_SD1_D2,
PE21_PF_SD1_D3,
PE22_PF_SD1_CMD,
PE23_PF_SD1_CLK,
/* NFC */
PF0_PF_NRFB,
PF1_PF_NFCE,
PF2_PF_NFWP,
PF3_PF_NFCLE,
PF4_PF_NFALE,
PF5_PF_NFRE,
PF6_PF_NFWE,
PF7_PF_NFIO0,
PF8_PF_NFIO1,
PF9_PF_NFIO2,
PF10_PF_NFIO3,
PF11_PF_NFIO4,
PF12_PF_NFIO5,
PF13_PF_NFIO6,
PF14_PF_NFIO7,
};
/* ADS's NOR flash: 2x AM29BDS128HE9VKI on 32-bit bus */
static struct physmap_flash_data mx21ads_flash_data = {
.width = 4,
};
static struct resource mx21ads_flash_resource =
DEFINE_RES_MEM(MX21_CS0_BASE_ADDR, SZ_32M);
static struct platform_device mx21ads_nor_mtd_device = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = &mx21ads_flash_data,
},
.num_resources = 1,
.resource = &mx21ads_flash_resource,
};
static struct resource mx21ads_cs8900_resources[] __initdata = {
DEFINE_RES_MEM(MX21ADS_CS8900A_REG, SZ_1K),
/* irq number is run-time assigned */
DEFINE_RES_IRQ(-1),
};
static const struct platform_device_info mx21ads_cs8900_devinfo __initconst = {
.name = "cs89x0",
.id = 0,
.res = mx21ads_cs8900_resources,
.num_res = ARRAY_SIZE(mx21ads_cs8900_resources),
};
static const struct imxuart_platform_data uart_pdata_rts __initconst = {
.flags = IMXUART_HAVE_RTSCTS,
};
static const struct imxuart_platform_data uart_pdata_norts __initconst = {
};
static struct resource mx21ads_mmgpio_resource =
DEFINE_RES_MEM_NAMED(MX21ADS_IO_REG, SZ_2, "dat");
static struct bgpio_pdata mx21ads_mmgpio_pdata = {
.label = "mx21ads-mmgpio",
.base = MX21ADS_MMGPIO_BASE,
.ngpio = 16,
};
static struct platform_device mx21ads_mmgpio = {
.name = "basic-mmio-gpio",
.id = PLATFORM_DEVID_AUTO,
.resource = &mx21ads_mmgpio_resource,
.num_resources = 1,
.dev = {
.platform_data = &mx21ads_mmgpio_pdata,
},
};
static struct regulator_consumer_supply mx21ads_lcd_regulator_consumer =
REGULATOR_SUPPLY("lcd", "imx-fb.0");
static struct regulator_init_data mx21ads_lcd_regulator_init_data = {
.constraints = {
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
.consumer_supplies = &mx21ads_lcd_regulator_consumer,
.num_consumer_supplies = 1,
};
static struct fixed_voltage_config mx21ads_lcd_regulator_pdata = {
.supply_name = "LCD",
.microvolts = 3300000,
.init_data = &mx21ads_lcd_regulator_init_data,
};
static struct platform_device mx21ads_lcd_regulator = {
.name = "reg-fixed-voltage",
.id = PLATFORM_DEVID_AUTO,
.dev = {
.platform_data = &mx21ads_lcd_regulator_pdata,
},
};
static struct gpiod_lookup_table mx21ads_lcd_regulator_gpiod_table = {
.dev_id = "reg-fixed-voltage.0", /* Let's hope ID 0 is what we get */
.table = {
GPIO_LOOKUP("mx21ads-mmgpio", 9, NULL, GPIO_ACTIVE_HIGH),
{ },
},
};
/*
* Connected is a portrait Sharp-QVGA display
* of type: LQ035Q7DB02
*/
static struct imx_fb_videomode mx21ads_modes[] = {
{
.mode = {
.name = "Sharp-LQ035Q7",
.refresh = 60,
.xres = 240,
.yres = 320,
.pixclock = 188679, /* in ps (5.3MHz) */
.hsync_len = 2,
.left_margin = 6,
.right_margin = 16,
.vsync_len = 1,
.upper_margin = 8,
.lower_margin = 10,
},
.pcr = 0xfb108bc7,
.bpp = 16,
},
};
static const struct imx_fb_platform_data mx21ads_fb_data __initconst = {
.mode = mx21ads_modes,
.num_modes = ARRAY_SIZE(mx21ads_modes),
.pwmr = 0x00a903ff,
.lscr1 = 0x00120300,
.dmacr = 0x00020008,
};
static int mx21ads_sdhc_get_ro(struct device *dev)
{
return gpio_get_value(MX21ADS_IO_SD_WP);
}
static int mx21ads_sdhc_init(struct device *dev, irq_handler_t detect_irq,
void *data)
{
int ret;
ret = gpio_request(MX21ADS_IO_SD_WP, "mmc-ro");
if (ret)
return ret;
return request_irq(gpio_to_irq(MX21ADS_MMC_CD), detect_irq,
IRQF_TRIGGER_FALLING, "mmc-detect", data);
}
static void mx21ads_sdhc_exit(struct device *dev, void *data)
{
free_irq(gpio_to_irq(MX21ADS_MMC_CD), data);
gpio_free(MX21ADS_IO_SD_WP);
}
static const struct imxmmc_platform_data mx21ads_sdhc_pdata __initconst = {
.ocr_avail = MMC_VDD_29_30 | MMC_VDD_30_31, /* 3.0V */
.get_ro = mx21ads_sdhc_get_ro,
.init = mx21ads_sdhc_init,
.exit = mx21ads_sdhc_exit,
};
static const struct mxc_nand_platform_data
mx21ads_nand_board_info __initconst = {
.width = 1,
.hw_ecc = 1,
};
static struct platform_device *platform_devices[] __initdata = {
&mx21ads_mmgpio,
&mx21ads_lcd_regulator,
&mx21ads_nor_mtd_device,
};
static void __init mx21ads_board_init(void)
{
imx21_soc_init();
mxc_gpio_setup_multiple_pins(mx21ads_pins, ARRAY_SIZE(mx21ads_pins),
"mx21ads");
imx21_add_imx_uart0(&uart_pdata_rts);
imx21_add_imx_uart2(&uart_pdata_norts);
imx21_add_imx_uart3(&uart_pdata_rts);
imx21_add_mxc_nand(&mx21ads_nand_board_info);
imx21_add_imx_fb(&mx21ads_fb_data);
}
static void __init mx21ads_late_init(void)
{
imx21_add_mxc_mmc(0, &mx21ads_sdhc_pdata);
gpiod_add_lookup_table(&mx21ads_lcd_regulator_gpiod_table);
platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
mx21ads_cs8900_resources[1].start =
gpio_to_irq(MX21ADS_CS8900A_IRQ_GPIO);
mx21ads_cs8900_resources[1].end =
gpio_to_irq(MX21ADS_CS8900A_IRQ_GPIO);
platform_device_register_full(&mx21ads_cs8900_devinfo);
}
static void __init mx21ads_timer_init(void)
{
mx21_clocks_init(32768, 26000000);
}
MACHINE_START(MX21ADS, "Freescale i.MX21ADS")
/* maintainer: Freescale Semiconductor, Inc. */
.atag_offset = 0x100,
.map_io = mx21_map_io,
.init_early = imx21_init_early,
.init_irq = mx21_init_irq,
.init_time = mx21ads_timer_init,
.init_machine = mx21ads_board_init,
.init_late = mx21ads_late_init,
.restart = mxc_restart,
MACHINE_END
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