mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-26 06:04:14 +08:00
0f4630f372
The separate struct bgpio_chip has been a pain to handle, both by being confusingly similar in name to struct gpio_chip and for being contained inside a struct so that struct gpio_chip is contained in a struct contained in a struct, making several steps of dereferencing necessary. Make things simpler: include the fields directly into <linux/gpio/driver.h>, #ifdef:ed for CONFIG_GENERIC_GPIO, and get rid of the <linux/basic_mmio_gpio.h> altogether. Prefix some of the member variables with bgpio_* and add proper kerneldoc while we're at it. Modify all users to handle the change and use a struct gpio_chip directly. And while we're at it: replace all container_of() dereferencing by gpiochip_get_data() and registering the gpio_chip with gpiochip_add_data(). Cc: arm@kernel.org Cc: Alexander Shiyan <shc_work@mail.ru> Cc: Shawn Guo <shawnguo@kernel.org> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: Kukjin Kim <kgene@kernel.org> Cc: Alexandre Courbot <gnurou@gmail.com> Cc: Brian Norris <computersforpeace@gmail.com> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Nicolas Pitre <nicolas.pitre@linaro.org> Cc: Olof Johansson <olof@lixom.net> Cc: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com> Cc: Rabin Vincent <rabin@rab.in> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-omap@vger.kernel.org Cc: linux-samsung-soc@vger.kernel.org Cc: bcm-kernel-feedback-list@broadcom.com Acked-by: Gregory Fong <gregory.0xf0@gmail.com> Acked-by: Liviu Dudau <Liviu.Dudau@arm.com> Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
276 lines
7.4 KiB
C
276 lines
7.4 KiB
C
/*
|
|
* linux/arch/arm/mach-clps711x/autcpu12.c
|
|
*
|
|
* (c) 2001 Thomas Gleixner, autronix automation <gleixner@autronix.de>
|
|
*
|
|
* 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/types.h>
|
|
#include <linux/string.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/io.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/mtd/physmap.h>
|
|
#include <linux/mtd/plat-ram.h>
|
|
#include <linux/mtd/partitions.h>
|
|
#include <linux/mtd/nand-gpio.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/gpio/driver.h>
|
|
|
|
#include <mach/hardware.h>
|
|
#include <asm/sizes.h>
|
|
#include <asm/setup.h>
|
|
#include <asm/mach-types.h>
|
|
#include <asm/mach/arch.h>
|
|
#include <asm/pgtable.h>
|
|
#include <asm/page.h>
|
|
|
|
#include <asm/mach/map.h>
|
|
|
|
#include "common.h"
|
|
#include "devices.h"
|
|
|
|
/* NOR flash */
|
|
#define AUTCPU12_FLASH_BASE (CS0_PHYS_BASE)
|
|
|
|
/* Board specific hardware definitions */
|
|
#define AUTCPU12_CHAR_LCD_BASE (CS1_PHYS_BASE + 0x00000000)
|
|
#define AUTCPU12_CSAUX1_BASE (CS1_PHYS_BASE + 0x04000000)
|
|
#define AUTCPU12_CAN_BASE (CS1_PHYS_BASE + 0x08000000)
|
|
#define AUTCPU12_TOUCH_BASE (CS1_PHYS_BASE + 0x0a000000)
|
|
#define AUTCPU12_IO_BASE (CS1_PHYS_BASE + 0x0c000000)
|
|
#define AUTCPU12_LPT_BASE (CS1_PHYS_BASE + 0x0e000000)
|
|
|
|
/* NVRAM */
|
|
#define AUTCPU12_NVRAM_BASE (CS1_PHYS_BASE + 0x02000000)
|
|
|
|
/* SmartMedia flash */
|
|
#define AUTCPU12_SMC_BASE (CS1_PHYS_BASE + 0x06000000)
|
|
#define AUTCPU12_SMC_SEL_BASE (AUTCPU12_SMC_BASE + 0x10)
|
|
|
|
/* Ethernet */
|
|
#define AUTCPU12_CS8900_BASE (CS2_PHYS_BASE + 0x300)
|
|
#define AUTCPU12_CS8900_IRQ (IRQ_EINT3)
|
|
|
|
/* NAND flash */
|
|
#define AUTCPU12_MMGPIO_BASE (CLPS711X_NR_GPIO)
|
|
#define AUTCPU12_SMC_NCE (AUTCPU12_MMGPIO_BASE + 0) /* Bit 0 */
|
|
#define AUTCPU12_SMC_RDY CLPS711X_GPIO(1, 2)
|
|
#define AUTCPU12_SMC_ALE CLPS711X_GPIO(1, 3)
|
|
#define AUTCPU12_SMC_CLE CLPS711X_GPIO(1, 4)
|
|
|
|
/* LCD contrast digital potentiometer */
|
|
#define AUTCPU12_DPOT_CS CLPS711X_GPIO(4, 0)
|
|
#define AUTCPU12_DPOT_CLK CLPS711X_GPIO(4, 1)
|
|
#define AUTCPU12_DPOT_UD CLPS711X_GPIO(4, 2)
|
|
|
|
static struct resource autcpu12_cs8900_resource[] __initdata = {
|
|
DEFINE_RES_MEM(AUTCPU12_CS8900_BASE, SZ_1K),
|
|
DEFINE_RES_IRQ(AUTCPU12_CS8900_IRQ),
|
|
};
|
|
|
|
static struct resource autcpu12_nand_resource[] __initdata = {
|
|
DEFINE_RES_MEM(AUTCPU12_SMC_BASE, SZ_16),
|
|
};
|
|
|
|
static struct mtd_partition autcpu12_nand_parts[] __initdata = {
|
|
{
|
|
.name = "Flash partition 1",
|
|
.offset = 0,
|
|
.size = SZ_8M,
|
|
},
|
|
{
|
|
.name = "Flash partition 2",
|
|
.offset = MTDPART_OFS_APPEND,
|
|
.size = MTDPART_SIZ_FULL,
|
|
},
|
|
};
|
|
|
|
static void __init autcpu12_adjust_parts(struct gpio_nand_platdata *pdata,
|
|
size_t sz)
|
|
{
|
|
switch (sz) {
|
|
case SZ_16M:
|
|
case SZ_32M:
|
|
break;
|
|
case SZ_64M:
|
|
case SZ_128M:
|
|
pdata->parts[0].size = SZ_16M;
|
|
break;
|
|
default:
|
|
pr_warn("Unsupported SmartMedia device size %u\n", sz);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static struct gpio_nand_platdata autcpu12_nand_pdata __initdata = {
|
|
.gpio_rdy = AUTCPU12_SMC_RDY,
|
|
.gpio_nce = AUTCPU12_SMC_NCE,
|
|
.gpio_ale = AUTCPU12_SMC_ALE,
|
|
.gpio_cle = AUTCPU12_SMC_CLE,
|
|
.gpio_nwp = -1,
|
|
.chip_delay = 20,
|
|
.parts = autcpu12_nand_parts,
|
|
.num_parts = ARRAY_SIZE(autcpu12_nand_parts),
|
|
.adjust_parts = autcpu12_adjust_parts,
|
|
};
|
|
|
|
static struct platform_device autcpu12_nand_pdev __initdata = {
|
|
.name = "gpio-nand",
|
|
.id = -1,
|
|
.resource = autcpu12_nand_resource,
|
|
.num_resources = ARRAY_SIZE(autcpu12_nand_resource),
|
|
.dev = {
|
|
.platform_data = &autcpu12_nand_pdata,
|
|
},
|
|
};
|
|
|
|
static struct resource autcpu12_mmgpio_resource[] __initdata = {
|
|
DEFINE_RES_MEM_NAMED(AUTCPU12_SMC_SEL_BASE, SZ_1, "dat"),
|
|
};
|
|
|
|
static struct bgpio_pdata autcpu12_mmgpio_pdata __initdata = {
|
|
.base = AUTCPU12_MMGPIO_BASE,
|
|
.ngpio = 8,
|
|
};
|
|
|
|
static struct platform_device autcpu12_mmgpio_pdev __initdata = {
|
|
.name = "basic-mmio-gpio",
|
|
.id = -1,
|
|
.resource = autcpu12_mmgpio_resource,
|
|
.num_resources = ARRAY_SIZE(autcpu12_mmgpio_resource),
|
|
.dev = {
|
|
.platform_data = &autcpu12_mmgpio_pdata,
|
|
},
|
|
};
|
|
|
|
static const struct gpio const autcpu12_gpios[] __initconst = {
|
|
{ AUTCPU12_DPOT_CS, GPIOF_OUT_INIT_HIGH, "DPOT CS" },
|
|
{ AUTCPU12_DPOT_CLK, GPIOF_OUT_INIT_LOW, "DPOT CLK" },
|
|
{ AUTCPU12_DPOT_UD, GPIOF_OUT_INIT_LOW, "DPOT UD" },
|
|
};
|
|
|
|
static struct mtd_partition autcpu12_flash_partitions[] = {
|
|
{
|
|
.name = "NOR.0",
|
|
.offset = 0,
|
|
.size = MTDPART_SIZ_FULL,
|
|
},
|
|
};
|
|
|
|
static struct physmap_flash_data autcpu12_flash_pdata = {
|
|
.width = 4,
|
|
.parts = autcpu12_flash_partitions,
|
|
.nr_parts = ARRAY_SIZE(autcpu12_flash_partitions),
|
|
};
|
|
|
|
static struct resource autcpu12_flash_resources[] __initdata = {
|
|
DEFINE_RES_MEM(AUTCPU12_FLASH_BASE, SZ_8M),
|
|
};
|
|
|
|
static struct platform_device autcpu12_flash_pdev __initdata = {
|
|
.name = "physmap-flash",
|
|
.id = 0,
|
|
.resource = autcpu12_flash_resources,
|
|
.num_resources = ARRAY_SIZE(autcpu12_flash_resources),
|
|
.dev = {
|
|
.platform_data = &autcpu12_flash_pdata,
|
|
},
|
|
};
|
|
|
|
static struct resource autcpu12_nvram_resource[] __initdata = {
|
|
DEFINE_RES_MEM(AUTCPU12_NVRAM_BASE, 0),
|
|
};
|
|
|
|
static struct platdata_mtd_ram autcpu12_nvram_pdata = {
|
|
.bankwidth = 4,
|
|
};
|
|
|
|
static struct platform_device autcpu12_nvram_pdev __initdata = {
|
|
.name = "mtd-ram",
|
|
.id = 0,
|
|
.resource = autcpu12_nvram_resource,
|
|
.num_resources = ARRAY_SIZE(autcpu12_nvram_resource),
|
|
.dev = {
|
|
.platform_data = &autcpu12_nvram_pdata,
|
|
},
|
|
};
|
|
|
|
static void __init autcpu12_nvram_init(void)
|
|
{
|
|
void __iomem *nvram;
|
|
unsigned int save[2];
|
|
resource_size_t nvram_size = SZ_128K;
|
|
|
|
/*
|
|
* Check for 32K/128K
|
|
* Read ofs 0K
|
|
* Read ofs 64K
|
|
* Write complement to ofs 64K
|
|
* Read and check result on ofs 0K
|
|
* Restore contents
|
|
*/
|
|
nvram = ioremap(autcpu12_nvram_resource[0].start, SZ_128K);
|
|
if (nvram) {
|
|
save[0] = readl(nvram + 0);
|
|
save[1] = readl(nvram + SZ_64K);
|
|
writel(~save[0], nvram + SZ_64K);
|
|
if (readl(nvram + 0) != save[0]) {
|
|
writel(save[0], nvram + 0);
|
|
nvram_size = SZ_32K;
|
|
} else
|
|
writel(save[1], nvram + SZ_64K);
|
|
iounmap(nvram);
|
|
|
|
autcpu12_nvram_resource[0].end =
|
|
autcpu12_nvram_resource[0].start + nvram_size - 1;
|
|
platform_device_register(&autcpu12_nvram_pdev);
|
|
} else
|
|
pr_err("Failed to remap NVRAM resource\n");
|
|
}
|
|
|
|
static void __init autcpu12_init(void)
|
|
{
|
|
clps711x_devices_init();
|
|
platform_device_register(&autcpu12_flash_pdev);
|
|
platform_device_register_simple("video-clps711x", 0, NULL, 0);
|
|
platform_device_register_simple("cs89x0", 0, autcpu12_cs8900_resource,
|
|
ARRAY_SIZE(autcpu12_cs8900_resource));
|
|
platform_device_register(&autcpu12_mmgpio_pdev);
|
|
autcpu12_nvram_init();
|
|
}
|
|
|
|
static void __init autcpu12_init_late(void)
|
|
{
|
|
gpio_request_array(autcpu12_gpios, ARRAY_SIZE(autcpu12_gpios));
|
|
platform_device_register(&autcpu12_nand_pdev);
|
|
}
|
|
|
|
MACHINE_START(AUTCPU12, "autronix autcpu12")
|
|
/* Maintainer: Thomas Gleixner */
|
|
.atag_offset = 0x20000,
|
|
.map_io = clps711x_map_io,
|
|
.init_irq = clps711x_init_irq,
|
|
.init_time = clps711x_timer_init,
|
|
.init_machine = autcpu12_init,
|
|
.init_late = autcpu12_init_late,
|
|
.restart = clps711x_restart,
|
|
MACHINE_END
|
|
|