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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 | // SPDX-License-Identifier: GPL-2.0-only /* * Support for Compaq iPAQ H3100 and H3600 handheld computers (common code) * * Copyright (c) 2000,1 Compaq Computer Corporation. (Author: Jamey Hicks) * Copyright (c) 2009 Dmitry Artamonow <mad_soft@inbox.ru> */ #include <linux/kernel.h> #include <linux/gpio/machine.h> #include <linux/gpio.h> #include <linux/gpio_keys.h> #include <linux/input.h> #include <linux/mtd/mtd.h> #include <linux/mtd/partitions.h> #include <linux/platform_data/gpio-htc-egpio.h> #include <linux/platform_data/sa11x0-serial.h> #include <linux/platform_device.h> #include <linux/serial_core.h> #include <asm/mach/flash.h> #include <asm/mach/map.h> #include <mach/h3xxx.h> #include <mach/irqs.h> #include "generic.h" /* * H3xxx flash support */ static struct mtd_partition h3xxx_partitions[] = { { .name = "H3XXX boot firmware", .size = 0x00040000, .offset = 0, .mask_flags = MTD_WRITEABLE, /* force read-only */ }, { .name = "H3XXX rootfs", .size = MTDPART_SIZ_FULL, .offset = 0x00040000, } }; static void h3xxx_set_vpp(int vpp) { gpio_set_value(H3XXX_EGPIO_VPP_ON, vpp); } static int h3xxx_flash_init(void) { int err = gpio_request(H3XXX_EGPIO_VPP_ON, "Flash Vpp"); if (err) { pr_err("%s: can't request H3XXX_EGPIO_VPP_ON\n", __func__); return err; } err = gpio_direction_output(H3XXX_EGPIO_VPP_ON, 0); if (err) gpio_free(H3XXX_EGPIO_VPP_ON); return err; } static void h3xxx_flash_exit(void) { gpio_free(H3XXX_EGPIO_VPP_ON); } static struct flash_platform_data h3xxx_flash_data = { .map_name = "cfi_probe", .set_vpp = h3xxx_set_vpp, .init = h3xxx_flash_init, .exit = h3xxx_flash_exit, .parts = h3xxx_partitions, .nr_parts = ARRAY_SIZE(h3xxx_partitions), }; static struct resource h3xxx_flash_resource = DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_32M); /* * H3xxx uart support */ static struct gpio h3xxx_uart_gpio[] = { { H3XXX_GPIO_COM_DCD, GPIOF_IN, "COM DCD" }, { H3XXX_GPIO_COM_CTS, GPIOF_IN, "COM CTS" }, { H3XXX_GPIO_COM_RTS, GPIOF_OUT_INIT_LOW, "COM RTS" }, }; static bool h3xxx_uart_request_gpios(void) { static bool h3xxx_uart_gpio_ok; int rc; if (h3xxx_uart_gpio_ok) return true; rc = gpio_request_array(h3xxx_uart_gpio, ARRAY_SIZE(h3xxx_uart_gpio)); if (rc) pr_err("h3xxx_uart_request_gpios: error %d\n", rc); else h3xxx_uart_gpio_ok = true; return h3xxx_uart_gpio_ok; } static void h3xxx_uart_set_mctrl(struct uart_port *port, u_int mctrl) { if (port->mapbase == _Ser3UTCR0) { if (!h3xxx_uart_request_gpios()) return; gpio_set_value(H3XXX_GPIO_COM_RTS, !(mctrl & TIOCM_RTS)); } } static u_int h3xxx_uart_get_mctrl(struct uart_port *port) { u_int ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR; if (port->mapbase == _Ser3UTCR0) { if (!h3xxx_uart_request_gpios()) return ret; /* * DCD and CTS bits are inverted in GPLR by RS232 transceiver */ if (gpio_get_value(H3XXX_GPIO_COM_DCD)) ret &= ~TIOCM_CD; if (gpio_get_value(H3XXX_GPIO_COM_CTS)) ret &= ~TIOCM_CTS; } return ret; } static void h3xxx_uart_pm(struct uart_port *port, u_int state, u_int oldstate) { if (port->mapbase == _Ser3UTCR0) { if (!gpio_request(H3XXX_EGPIO_RS232_ON, "RS232 transceiver")) { gpio_direction_output(H3XXX_EGPIO_RS232_ON, !state); gpio_free(H3XXX_EGPIO_RS232_ON); } else { pr_err("%s: can't request H3XXX_EGPIO_RS232_ON\n", __func__); } } } /* * Enable/Disable wake up events for this serial port. * Obviously, we only support this on the normal COM port. */ static int h3xxx_uart_set_wake(struct uart_port *port, u_int enable) { int err = -EINVAL; if (port->mapbase == _Ser3UTCR0) { if (enable) PWER |= PWER_GPIO23 | PWER_GPIO25; /* DCD and CTS */ else PWER &= ~(PWER_GPIO23 | PWER_GPIO25); /* DCD and CTS */ err = 0; } return err; } static struct sa1100_port_fns h3xxx_port_fns __initdata = { .set_mctrl = h3xxx_uart_set_mctrl, .get_mctrl = h3xxx_uart_get_mctrl, .pm = h3xxx_uart_pm, .set_wake = h3xxx_uart_set_wake, }; /* * EGPIO */ static struct resource egpio_resources[] = { [0] = DEFINE_RES_MEM(H3600_EGPIO_PHYS, 0x4), }; static struct htc_egpio_chip egpio_chips[] = { [0] = { .reg_start = 0, .gpio_base = H3XXX_EGPIO_BASE, .num_gpios = 16, .direction = HTC_EGPIO_OUTPUT, .initial_values = 0x0080, /* H3XXX_EGPIO_RS232_ON */ }, }; static struct htc_egpio_platform_data egpio_info = { .reg_width = 16, .bus_width = 16, .chip = egpio_chips, .num_chips = ARRAY_SIZE(egpio_chips), }; static struct platform_device h3xxx_egpio = { .name = "htc-egpio", .id = -1, .resource = egpio_resources, .num_resources = ARRAY_SIZE(egpio_resources), .dev = { .platform_data = &egpio_info, }, }; /* * GPIO keys */ static struct gpio_keys_button h3xxx_button_table[] = { { .code = KEY_POWER, .gpio = H3XXX_GPIO_PWR_BUTTON, .desc = "Power Button", .active_low = 1, .type = EV_KEY, .wakeup = 1, }, { .code = KEY_ENTER, .gpio = H3XXX_GPIO_ACTION_BUTTON, .active_low = 1, .desc = "Action button", .type = EV_KEY, .wakeup = 0, }, }; static struct gpio_keys_platform_data h3xxx_keys_data = { .buttons = h3xxx_button_table, .nbuttons = ARRAY_SIZE(h3xxx_button_table), }; static struct platform_device h3xxx_keys = { .name = "gpio-keys", .id = -1, .dev = { .platform_data = &h3xxx_keys_data, }, }; static struct resource h3xxx_micro_resources[] = { DEFINE_RES_MEM(0x80010000, SZ_4K), DEFINE_RES_MEM(0x80020000, SZ_4K), DEFINE_RES_IRQ(IRQ_Ser1UART), }; struct platform_device h3xxx_micro_asic = { .name = "ipaq-h3xxx-micro", .id = -1, .resource = h3xxx_micro_resources, .num_resources = ARRAY_SIZE(h3xxx_micro_resources), }; static struct platform_device *h3xxx_devices[] = { &h3xxx_egpio, &h3xxx_keys, &h3xxx_micro_asic, }; static struct gpiod_lookup_table h3xxx_pcmcia_gpio_table = { .dev_id = "sa11x0-pcmcia", .table = { GPIO_LOOKUP("gpio", H3XXX_GPIO_PCMCIA_CD0, "pcmcia0-detect", GPIO_ACTIVE_LOW), GPIO_LOOKUP("gpio", H3XXX_GPIO_PCMCIA_IRQ0, "pcmcia0-ready", GPIO_ACTIVE_HIGH), GPIO_LOOKUP("gpio", H3XXX_GPIO_PCMCIA_CD1, "pcmcia1-detect", GPIO_ACTIVE_LOW), GPIO_LOOKUP("gpio", H3XXX_GPIO_PCMCIA_IRQ1, "pcmcia1-ready", GPIO_ACTIVE_HIGH), { }, }, }; void __init h3xxx_mach_init(void) { gpiod_add_lookup_table(&h3xxx_pcmcia_gpio_table); sa1100_register_uart_fns(&h3xxx_port_fns); sa11x0_register_mtd(&h3xxx_flash_data, &h3xxx_flash_resource, 1); platform_add_devices(h3xxx_devices, ARRAY_SIZE(h3xxx_devices)); } static struct map_desc h3600_io_desc[] __initdata = { { /* static memory bank 2 CS#2 */ .virtual = H3600_BANK_2_VIRT, .pfn = __phys_to_pfn(SA1100_CS2_PHYS), .length = 0x02800000, .type = MT_DEVICE }, { /* static memory bank 4 CS#4 */ .virtual = H3600_BANK_4_VIRT, .pfn = __phys_to_pfn(SA1100_CS4_PHYS), .length = 0x00800000, .type = MT_DEVICE }, { /* EGPIO 0 CS#5 */ .virtual = H3600_EGPIO_VIRT, .pfn = __phys_to_pfn(H3600_EGPIO_PHYS), .length = 0x01000000, .type = MT_DEVICE } }; /* * Common map_io initialization */ void __init h3xxx_map_io(void) { sa1100_map_io(); iotable_init(h3600_io_desc, ARRAY_SIZE(h3600_io_desc)); sa1100_register_uart(0, 3); /* Common serial port */ // sa1100_register_uart(1, 1); /* Microcontroller on 3100/3600 */ /* Ensure those pins are outputs and driving low */ PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM; PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM); /* Configure suspend conditions */ PGSR = 0; PCFR = PCFR_OPDE; PSDR = 0; GPCR = 0x0fffffff; /* All outputs are set low by default */ GPDR = 0; /* Configure all GPIOs as input */ } |