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This converts the SA11x0 frame buffer driver to use GPIO descriptors. Get the GPIO optional and register a look-up table specifically for the Shannon machine. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Cc: Russell King <linux@armlinux.org.uk> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200415165055.193113-1-linus.walleij@linaro.org
158 lines
3.8 KiB
C
158 lines
3.8 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 struct gpiod_lookup_table shannon_display_gpio_table = {
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.dev_id = "sa11x0-fb",
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.table = {
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GPIO_LOOKUP("gpio", 22, "shannon-lcden", GPIO_ACTIVE_HIGH),
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{ },
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},
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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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gpiod_add_lookup_table(&shannon_display_gpio_table);
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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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