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efdfeb079c
As we augmented the regulator core to accept a GPIO descriptor instead of a GPIO number, we can augment the fixed GPIO regulator to look up and pass that descriptor directly from device tree or board GPIO descriptor look up tables. Some boards just auto-enumerate their fixed regulator platform devices and I have assumed they get names like "fixed-regulator.0" but it's pretty hard to guess this. I need some testing from board maintainers to be sure. Other boards are straight forward, using just plain "fixed-regulator" (ID -1) or "fixed-regulator.1" hammering down the device ID. It seems the da9055 and da9211 has never got around to actually passing any enable gpio into its platform data (not the in-tree code anyway) so we can just decide to simply pass a descriptor instead. The fixed GPIO-controlled regulator in mach-pxa/ezx.c was confusingly named "*_dummy_supply_device" while it is a very real device backed by a GPIO line. There is nothing dummy about it at all, so I renamed it with the infix *_regulator_* as part of this patch set. Intel MID portions tested by Andy. Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Check the x86 BCM stuff Acked-by: Tony Lindgren <tony@atomide.com> # OMAP1,2,3 maintainer Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Janusz Krzysztofik <jmkrzyszt@gmail.com> Reviewed-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Signed-off-by: Mark Brown <broonie@kernel.org>
149 lines
3.6 KiB
C
149 lines
3.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* linux/arch/arm/mach-sa1100/shannon.c
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*/
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#include <linux/init.h>
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#include <linux/device.h>
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#include <linux/gpio/machine.h>
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#include <linux/kernel.h>
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#include <linux/platform_data/sa11x0-serial.h>
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#include <linux/tty.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <linux/regulator/fixed.h>
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#include <linux/regulator/machine.h>
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#include <video/sa1100fb.h>
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#include <mach/hardware.h>
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#include <asm/mach-types.h>
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#include <asm/setup.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/flash.h>
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#include <asm/mach/map.h>
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#include <linux/platform_data/mfd-mcp-sa11x0.h>
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#include <mach/shannon.h>
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#include <mach/irqs.h>
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#include "generic.h"
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static struct mtd_partition shannon_partitions[] = {
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{
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.name = "BLOB boot loader",
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.offset = 0,
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.size = 0x20000
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},
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{
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.name = "kernel",
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.offset = MTDPART_OFS_APPEND,
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.size = 0xe0000
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},
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{
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.name = "initrd",
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.offset = MTDPART_OFS_APPEND,
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.size = MTDPART_SIZ_FULL
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}
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};
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static struct flash_platform_data shannon_flash_data = {
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.map_name = "cfi_probe",
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.parts = shannon_partitions,
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.nr_parts = ARRAY_SIZE(shannon_partitions),
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};
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static struct resource shannon_flash_resource =
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DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_4M);
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static struct mcp_plat_data shannon_mcp_data = {
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.mccr0 = MCCR0_ADM,
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.sclk_rate = 11981000,
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};
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static struct sa1100fb_mach_info shannon_lcd_info = {
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.pixclock = 152500, .bpp = 8,
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.xres = 640, .yres = 480,
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.hsync_len = 4, .vsync_len = 3,
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.left_margin = 2, .upper_margin = 0,
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.right_margin = 1, .lower_margin = 0,
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.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
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.lccr0 = LCCR0_Color | LCCR0_Dual | LCCR0_Pas,
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.lccr3 = LCCR3_ACBsDiv(512),
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};
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static struct gpiod_lookup_table shannon_pcmcia0_gpio_table = {
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.dev_id = "sa11x0-pcmcia.0",
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.table = {
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GPIO_LOOKUP("gpio", 24, "detect", GPIO_ACTIVE_LOW),
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GPIO_LOOKUP("gpio", 26, "ready", GPIO_ACTIVE_HIGH),
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{ },
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},
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};
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static struct gpiod_lookup_table shannon_pcmcia1_gpio_table = {
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.dev_id = "sa11x0-pcmcia.1",
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.table = {
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GPIO_LOOKUP("gpio", 25, "detect", GPIO_ACTIVE_LOW),
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GPIO_LOOKUP("gpio", 27, "ready", GPIO_ACTIVE_HIGH),
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{ },
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},
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};
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static struct regulator_consumer_supply shannon_cf_vcc_consumers[] = {
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REGULATOR_SUPPLY("vcc", "sa11x0-pcmcia.0"),
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REGULATOR_SUPPLY("vcc", "sa11x0-pcmcia.1"),
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};
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static struct fixed_voltage_config shannon_cf_vcc_pdata __initdata = {
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.supply_name = "cf-power",
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.microvolts = 3300000,
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.enabled_at_boot = 1,
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};
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static void __init shannon_init(void)
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{
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sa11x0_register_fixed_regulator(0, &shannon_cf_vcc_pdata,
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shannon_cf_vcc_consumers,
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ARRAY_SIZE(shannon_cf_vcc_consumers),
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false);
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sa11x0_register_pcmcia(0, &shannon_pcmcia0_gpio_table);
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sa11x0_register_pcmcia(1, &shannon_pcmcia1_gpio_table);
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sa11x0_ppc_configure_mcp();
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sa11x0_register_lcd(&shannon_lcd_info);
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sa11x0_register_mtd(&shannon_flash_data, &shannon_flash_resource, 1);
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sa11x0_register_mcp(&shannon_mcp_data);
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}
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static void __init shannon_map_io(void)
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{
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sa1100_map_io();
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sa1100_register_uart(0, 3);
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sa1100_register_uart(1, 1);
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Ser1SDCR0 |= SDCR0_SUS;
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GAFR |= (GPIO_UART_TXD | GPIO_UART_RXD);
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GPDR |= GPIO_UART_TXD | SHANNON_GPIO_CODEC_RESET;
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GPDR &= ~GPIO_UART_RXD;
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PPAR |= PPAR_UPR;
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/* reset the codec */
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GPCR = SHANNON_GPIO_CODEC_RESET;
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GPSR = SHANNON_GPIO_CODEC_RESET;
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}
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MACHINE_START(SHANNON, "Shannon (AKA: Tuxscreen)")
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.atag_offset = 0x100,
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.map_io = shannon_map_io,
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.nr_irqs = SA1100_NR_IRQS,
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.init_irq = sa1100_init_irq,
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.init_time = sa1100_timer_init,
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.init_machine = shannon_init,
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.init_late = sa11x0_init_late,
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.restart = sa11x0_restart,
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MACHINE_END
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