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288 lines
6.6 KiB
288 lines
6.6 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Support for Compaq iPAQ H3100 and H3600 handheld computers (common code) |
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* |
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* Copyright (c) 2000,1 Compaq Computer Corporation. (Author: Jamey Hicks) |
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* Copyright (c) 2009 Dmitry Artamonow <[email protected]> |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/gpio/machine.h> |
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#include <linux/gpio.h> |
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#include <linux/gpio_keys.h> |
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#include <linux/input.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/platform_data/gpio-htc-egpio.h> |
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#include <linux/platform_data/sa11x0-serial.h> |
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#include <linux/platform_device.h> |
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#include <linux/serial_core.h> |
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#include <asm/mach/flash.h> |
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#include <asm/mach/map.h> |
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#include <mach/h3xxx.h> |
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#include <mach/irqs.h> |
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#include "generic.h" |
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/* |
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* H3xxx flash support |
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*/ |
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static struct mtd_partition h3xxx_partitions[] = { |
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{ |
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.name = "H3XXX boot firmware", |
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.size = 0x00040000, |
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.offset = 0, |
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.mask_flags = MTD_WRITEABLE, /* force read-only */ |
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}, { |
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.name = "H3XXX rootfs", |
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.size = MTDPART_SIZ_FULL, |
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.offset = 0x00040000, |
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} |
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}; |
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static void h3xxx_set_vpp(int vpp) |
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{ |
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gpio_set_value(H3XXX_EGPIO_VPP_ON, vpp); |
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} |
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static int h3xxx_flash_init(void) |
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{ |
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int err = gpio_request(H3XXX_EGPIO_VPP_ON, "Flash Vpp"); |
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if (err) { |
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pr_err("%s: can't request H3XXX_EGPIO_VPP_ON\n", __func__); |
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return err; |
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} |
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err = gpio_direction_output(H3XXX_EGPIO_VPP_ON, 0); |
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if (err) |
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gpio_free(H3XXX_EGPIO_VPP_ON); |
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return err; |
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} |
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static void h3xxx_flash_exit(void) |
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{ |
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gpio_free(H3XXX_EGPIO_VPP_ON); |
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} |
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static struct flash_platform_data h3xxx_flash_data = { |
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.map_name = "cfi_probe", |
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.set_vpp = h3xxx_set_vpp, |
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.init = h3xxx_flash_init, |
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.exit = h3xxx_flash_exit, |
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.parts = h3xxx_partitions, |
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.nr_parts = ARRAY_SIZE(h3xxx_partitions), |
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}; |
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static struct resource h3xxx_flash_resource = |
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DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M); |
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/* |
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* H3xxx uart support |
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*/ |
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static void h3xxx_uart_pm(struct uart_port *port, u_int state, u_int oldstate) |
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{ |
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if (port->mapbase == _Ser3UTCR0) { |
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if (!gpio_request(H3XXX_EGPIO_RS232_ON, "RS232 transceiver")) { |
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gpio_direction_output(H3XXX_EGPIO_RS232_ON, !state); |
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gpio_free(H3XXX_EGPIO_RS232_ON); |
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} else { |
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pr_err("%s: can't request H3XXX_EGPIO_RS232_ON\n", |
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__func__); |
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} |
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} |
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} |
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/* |
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* Enable/Disable wake up events for this serial port. |
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* Obviously, we only support this on the normal COM port. |
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*/ |
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static int h3xxx_uart_set_wake(struct uart_port *port, u_int enable) |
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{ |
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int err = -EINVAL; |
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if (port->mapbase == _Ser3UTCR0) { |
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if (enable) |
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PWER |= PWER_GPIO23 | PWER_GPIO25; /* DCD and CTS */ |
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else |
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PWER &= ~(PWER_GPIO23 | PWER_GPIO25); /* DCD and CTS */ |
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err = 0; |
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} |
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return err; |
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} |
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static struct sa1100_port_fns h3xxx_port_fns __initdata = { |
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.pm = h3xxx_uart_pm, |
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.set_wake = h3xxx_uart_set_wake, |
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}; |
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static struct gpiod_lookup_table h3xxx_uart3_gpio_table = { |
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.dev_id = "sa11x0-uart.3", |
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.table = { |
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GPIO_LOOKUP("gpio", H3XXX_GPIO_COM_DCD, "dcd", GPIO_ACTIVE_LOW), |
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GPIO_LOOKUP("gpio", H3XXX_GPIO_COM_CTS, "cts", GPIO_ACTIVE_LOW), |
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GPIO_LOOKUP("gpio", H3XXX_GPIO_COM_RTS, "rts", GPIO_ACTIVE_LOW), |
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{ }, |
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}, |
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}; |
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/* |
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* EGPIO |
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*/ |
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static struct resource egpio_resources[] = { |
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[0] = DEFINE_RES_MEM(H3600_EGPIO_PHYS, 0x4), |
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}; |
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static struct htc_egpio_chip egpio_chips[] = { |
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[0] = { |
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.reg_start = 0, |
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.gpio_base = H3XXX_EGPIO_BASE, |
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.num_gpios = 16, |
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.direction = HTC_EGPIO_OUTPUT, |
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.initial_values = 0x0080, /* H3XXX_EGPIO_RS232_ON */ |
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}, |
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}; |
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static struct htc_egpio_platform_data egpio_info = { |
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.reg_width = 16, |
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.bus_width = 16, |
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.chip = egpio_chips, |
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.num_chips = ARRAY_SIZE(egpio_chips), |
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}; |
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static struct platform_device h3xxx_egpio = { |
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.name = "htc-egpio", |
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.id = -1, |
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.resource = egpio_resources, |
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.num_resources = ARRAY_SIZE(egpio_resources), |
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.dev = { |
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.platform_data = &egpio_info, |
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}, |
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}; |
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/* |
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* GPIO keys |
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*/ |
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static struct gpio_keys_button h3xxx_button_table[] = { |
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{ |
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.code = KEY_POWER, |
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.gpio = H3XXX_GPIO_PWR_BUTTON, |
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.desc = "Power Button", |
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.active_low = 1, |
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.type = EV_KEY, |
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.wakeup = 1, |
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}, { |
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.code = KEY_ENTER, |
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.gpio = H3XXX_GPIO_ACTION_BUTTON, |
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.active_low = 1, |
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.desc = "Action button", |
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.type = EV_KEY, |
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.wakeup = 0, |
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}, |
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}; |
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static struct gpio_keys_platform_data h3xxx_keys_data = { |
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.buttons = h3xxx_button_table, |
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.nbuttons = ARRAY_SIZE(h3xxx_button_table), |
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}; |
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static struct platform_device h3xxx_keys = { |
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.name = "gpio-keys", |
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.id = -1, |
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.dev = { |
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.platform_data = &h3xxx_keys_data, |
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}, |
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}; |
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static struct resource h3xxx_micro_resources[] = { |
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DEFINE_RES_MEM(0x80010000, SZ_4K), |
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DEFINE_RES_MEM(0x80020000, SZ_4K), |
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DEFINE_RES_IRQ(IRQ_Ser1UART), |
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}; |
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struct platform_device h3xxx_micro_asic = { |
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.name = "ipaq-h3xxx-micro", |
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.id = -1, |
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.resource = h3xxx_micro_resources, |
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.num_resources = ARRAY_SIZE(h3xxx_micro_resources), |
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}; |
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static struct platform_device *h3xxx_devices[] = { |
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&h3xxx_egpio, |
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&h3xxx_keys, |
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&h3xxx_micro_asic, |
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}; |
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static struct gpiod_lookup_table h3xxx_pcmcia_gpio_table = { |
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.dev_id = "sa11x0-pcmcia", |
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.table = { |
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GPIO_LOOKUP("gpio", H3XXX_GPIO_PCMCIA_CD0, |
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"pcmcia0-detect", GPIO_ACTIVE_LOW), |
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GPIO_LOOKUP("gpio", H3XXX_GPIO_PCMCIA_IRQ0, |
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"pcmcia0-ready", GPIO_ACTIVE_HIGH), |
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GPIO_LOOKUP("gpio", H3XXX_GPIO_PCMCIA_CD1, |
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"pcmcia1-detect", GPIO_ACTIVE_LOW), |
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GPIO_LOOKUP("gpio", H3XXX_GPIO_PCMCIA_IRQ1, |
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"pcmcia1-ready", GPIO_ACTIVE_HIGH), |
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{ }, |
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}, |
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}; |
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void __init h3xxx_mach_init(void) |
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{ |
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gpiod_add_lookup_table(&h3xxx_pcmcia_gpio_table); |
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gpiod_add_lookup_table(&h3xxx_uart3_gpio_table); |
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sa1100_register_uart_fns(&h3xxx_port_fns); |
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sa11x0_register_mtd(&h3xxx_flash_data, &h3xxx_flash_resource, 1); |
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platform_add_devices(h3xxx_devices, ARRAY_SIZE(h3xxx_devices)); |
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} |
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static struct map_desc h3600_io_desc[] __initdata = { |
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{ /* static memory bank 2 CS#2 */ |
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.virtual = H3600_BANK_2_VIRT, |
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.pfn = __phys_to_pfn(SA1100_CS2_PHYS), |
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.length = 0x02800000, |
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.type = MT_DEVICE |
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}, { /* static memory bank 4 CS#4 */ |
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.virtual = H3600_BANK_4_VIRT, |
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.pfn = __phys_to_pfn(SA1100_CS4_PHYS), |
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.length = 0x00800000, |
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.type = MT_DEVICE |
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}, { /* EGPIO 0 CS#5 */ |
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.virtual = H3600_EGPIO_VIRT, |
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.pfn = __phys_to_pfn(H3600_EGPIO_PHYS), |
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.length = 0x01000000, |
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.type = MT_DEVICE |
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} |
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}; |
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/* |
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* Common map_io initialization |
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*/ |
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void __init h3xxx_map_io(void) |
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{ |
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sa1100_map_io(); |
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iotable_init(h3600_io_desc, ARRAY_SIZE(h3600_io_desc)); |
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sa1100_register_uart(0, 3); /* Common serial port */ |
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// sa1100_register_uart(1, 1); /* Microcontroller on 3100/3600 */ |
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/* Ensure those pins are outputs and driving low */ |
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PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM; |
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PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM); |
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/* Configure suspend conditions */ |
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PGSR = 0; |
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PCFR = PCFR_OPDE; |
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PSDR = 0; |
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GPCR = 0x0fffffff; /* All outputs are set low by default */ |
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GPDR = 0; /* Configure all GPIOs as input */ |
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} |
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