| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * (C) Copyright 2012 |
| * Ивайло Димитров <freemangordon@abv.bg> |
| * |
| * (C) Copyright 2011-2012 |
| * Pali Rohár <pali@kernel.org> |
| * |
| * (C) Copyright 2010 |
| * Alistair Buxton <a.j.buxton@gmail.com> |
| * |
| * Derived from Beagle Board and 3430 SDP code: |
| * (C) Copyright 2004-2008 |
| * Texas Instruments, <www.ti.com> |
| * |
| * Author : |
| * Sunil Kumar <sunilsaini05@gmail.com> |
| * Shashi Ranjan <shashiranjanmca05@gmail.com> |
| * |
| * Richard Woodruff <r-woodruff2@ti.com> |
| * Syed Mohammed Khasim <khasim@ti.com> |
| */ |
| |
| #include <common.h> |
| #include <env.h> |
| #include <watchdog.h> |
| #include <malloc.h> |
| #include <twl4030.h> |
| #include <i2c.h> |
| #include <video_fb.h> |
| #include <asm/io.h> |
| #include <asm/setup.h> |
| #include <asm/bitops.h> |
| #include <asm/mach-types.h> |
| #include <asm/arch/mux.h> |
| #include <asm/arch/sys_proto.h> |
| #include <asm/arch/mmc_host_def.h> |
| |
| #include "rx51.h" |
| #include "tag_omap.h" |
| |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| GraphicDevice gdev; |
| |
| const omap3_sysinfo sysinfo = { |
| DDR_STACKED, |
| "Nokia RX-51", |
| "OneNAND" |
| }; |
| |
| /* This structure contains default omap tags needed for booting Maemo 5 */ |
| static struct tag_omap omap[] = { |
| OMAP_TAG_UART_CONFIG(0x04), |
| OMAP_TAG_SERIAL_CONSOLE_CONFIG(0x03, 0x01C200), |
| OMAP_TAG_LCD_CONFIG("acx565akm", "internal", 90, 0x18), |
| OMAP_TAG_GPIO_SWITCH_CONFIG("cam_focus", 0x44, 0x1, 0x2, 0x0), |
| OMAP_TAG_GPIO_SWITCH_CONFIG("cam_launch", 0x45, 0x1, 0x2, 0x0), |
| OMAP_TAG_GPIO_SWITCH_CONFIG("cam_shutter", 0x6e, 0x1, 0x0, 0x0), |
| OMAP_TAG_GPIO_SWITCH_CONFIG("cmt_apeslpx", 0x46, 0x2, 0x2, 0x0), |
| OMAP_TAG_GPIO_SWITCH_CONFIG("cmt_bsi", 0x9d, 0x2, 0x2, 0x0), |
| OMAP_TAG_GPIO_SWITCH_CONFIG("cmt_en", 0x4a, 0x2, 0x2, 0x0), |
| OMAP_TAG_GPIO_SWITCH_CONFIG("cmt_rst", 0x4b, 0x6, 0x2, 0x0), |
| OMAP_TAG_GPIO_SWITCH_CONFIG("cmt_rst_rq", 0x49, 0x6, 0x2, 0x0), |
| OMAP_TAG_GPIO_SWITCH_CONFIG("cmt_wddis", 0x0d, 0x2, 0x2, 0x0), |
| OMAP_TAG_GPIO_SWITCH_CONFIG("headphone", 0xb1, 0x1, 0x1, 0x0), |
| OMAP_TAG_GPIO_SWITCH_CONFIG("kb_lock", 0x71, 0x1, 0x0, 0x0), |
| OMAP_TAG_GPIO_SWITCH_CONFIG("proximity", 0x59, 0x0, 0x0, 0x0), |
| OMAP_TAG_GPIO_SWITCH_CONFIG("sleep_ind", 0xa2, 0x2, 0x2, 0x0), |
| OMAP_TAG_GPIO_SWITCH_CONFIG("slide", GPIO_SLIDE, 0x0, 0x0, 0x0), |
| OMAP_TAG_WLAN_CX3110X_CONFIG(0x25, 0xff, 87, 42, -1), |
| OMAP_TAG_PARTITION_CONFIG("bootloader", 128 * 1024, 0x00000000, 0x00000003), |
| OMAP_TAG_PARTITION_CONFIG("config", 384 * 1024, 0x00020000, 0x00000000), |
| OMAP_TAG_PARTITION_CONFIG("log", 256 * 1024, 0x00080000, 0x00000000), |
| OMAP_TAG_PARTITION_CONFIG("kernel", 2 * 1024*1024, 0x000c0000, 0x00000000), |
| OMAP_TAG_PARTITION_CONFIG("initfs", 2 * 1024*1024, 0x002c0000, 0x00000000), |
| OMAP_TAG_PARTITION_CONFIG("rootfs", 257280 * 1024, 0x004c0000, 0x00000000), |
| OMAP_TAG_BOOT_REASON_CONFIG("pwr_key"), |
| OMAP_TAG_VERSION_STR_CONFIG("product", "RX-51"), |
| OMAP_TAG_VERSION_STR_CONFIG("hw-build", "2101"), |
| OMAP_TAG_VERSION_STR_CONFIG("nolo", "1.4.14"), |
| OMAP_TAG_VERSION_STR_CONFIG("boot-mode", "normal"), |
| { } |
| }; |
| |
| static char *boot_reason_ptr; |
| static char *hw_build_ptr; |
| static char *nolo_version_ptr; |
| static char *boot_mode_ptr; |
| static int serial_was_console_enabled; |
| |
| /* |
| * Routine: init_omap_tags |
| * Description: Initialize pointers to values in tag_omap |
| */ |
| static void init_omap_tags(void) |
| { |
| char *component; |
| char *version; |
| int i = 0; |
| while (omap[i].hdr.tag) { |
| switch (omap[i].hdr.tag) { |
| case OMAP_TAG_BOOT_REASON: |
| boot_reason_ptr = omap[i].u.boot_reason.reason_str; |
| break; |
| case OMAP_TAG_VERSION_STR: |
| component = omap[i].u.version.component; |
| version = omap[i].u.version.version; |
| if (strcmp(component, "hw-build") == 0) |
| hw_build_ptr = version; |
| else if (strcmp(component, "nolo") == 0) |
| nolo_version_ptr = version; |
| else if (strcmp(component, "boot-mode") == 0) |
| boot_mode_ptr = version; |
| break; |
| default: |
| break; |
| } |
| i++; |
| } |
| } |
| |
| static void reuse_omap_atags(struct tag_omap *t) |
| { |
| char *component; |
| char *version; |
| while (t->hdr.tag) { |
| switch (t->hdr.tag) { |
| case OMAP_TAG_BOOT_REASON: |
| memset(boot_reason_ptr, 0, 12); |
| strcpy(boot_reason_ptr, t->u.boot_reason.reason_str); |
| break; |
| case OMAP_TAG_VERSION_STR: |
| component = t->u.version.component; |
| version = t->u.version.version; |
| if (strcmp(component, "hw-build") == 0) { |
| memset(hw_build_ptr, 0, 12); |
| strcpy(hw_build_ptr, version); |
| } else if (strcmp(component, "nolo") == 0) { |
| memset(nolo_version_ptr, 0, 12); |
| strcpy(nolo_version_ptr, version); |
| } else if (strcmp(component, "boot-mode") == 0) { |
| memset(boot_mode_ptr, 0, 12); |
| strcpy(boot_mode_ptr, version); |
| } |
| break; |
| case OMAP_TAG_UART: |
| if (!t->u.uart.enabled_uarts) |
| serial_was_console_enabled = 1; |
| break; |
| case OMAP_TAG_SERIAL_CONSOLE: |
| serial_was_console_enabled = 1; |
| break; |
| default: |
| break; |
| } |
| t = tag_omap_next(t); |
| } |
| } |
| |
| /* |
| * Routine: reuse_atags |
| * Description: Reuse atags from previous bootloader. |
| * Reuse only only HW build, boot reason, boot mode and nolo |
| */ |
| static void reuse_atags(void) |
| { |
| struct tag *t = (struct tag *)gd->bd->bi_boot_params; |
| |
| /* First tag must be ATAG_CORE */ |
| if (t->hdr.tag != ATAG_CORE) |
| return; |
| |
| if (!boot_reason_ptr || !hw_build_ptr) |
| return; |
| |
| /* Last tag must be ATAG_NONE */ |
| while (t->hdr.tag != ATAG_NONE) { |
| switch (t->hdr.tag) { |
| case ATAG_REVISION: |
| memset(hw_build_ptr, 0, 12); |
| sprintf(hw_build_ptr, "%x", t->u.revision.rev); |
| break; |
| case ATAG_BOARD: |
| reuse_omap_atags((struct tag_omap *)&t->u); |
| break; |
| default: |
| break; |
| } |
| t = tag_next(t); |
| } |
| } |
| |
| /* |
| * Routine: board_init |
| * Description: Early hardware init. |
| */ |
| int board_init(void) |
| { |
| /* in SRAM or SDRAM, finish GPMC */ |
| gpmc_init(); |
| /* boot param addr */ |
| gd->bd->bi_boot_params = OMAP34XX_SDRC_CS0 + 0x100; |
| return 0; |
| } |
| |
| /* |
| * Routine: get_board_revision |
| * Description: Return board revision. |
| */ |
| u32 get_board_rev(void) |
| { |
| return simple_strtol(hw_build_ptr, NULL, 16); |
| } |
| |
| /* |
| * Routine: setup_board_tags |
| * Description: Append board specific boot tags. |
| */ |
| void setup_board_tags(struct tag **in_params) |
| { |
| int setup_console_atag; |
| char *setup_boot_reason_atag; |
| char *setup_boot_mode_atag; |
| char *str; |
| int i; |
| int size; |
| int total_size; |
| struct tag *params; |
| struct tag_omap *t; |
| |
| params = (struct tag *)gd->bd->bi_boot_params; |
| |
| params->u.core.flags = 0x0; |
| params->u.core.pagesize = 0x1000; |
| params->u.core.rootdev = 0x0; |
| |
| /* append omap atag only if env setup_omap_atag is set to 1 */ |
| str = env_get("setup_omap_atag"); |
| if (!str || str[0] != '1') |
| return; |
| |
| str = env_get("setup_console_atag"); |
| if (str && str[0]) { |
| if (str[0] == '1') |
| setup_console_atag = 1; |
| else |
| setup_console_atag = 0; |
| } else { |
| if (serial_was_console_enabled) |
| setup_console_atag = 1; |
| else |
| setup_console_atag = 0; |
| } |
| |
| setup_boot_reason_atag = env_get("setup_boot_reason_atag"); |
| setup_boot_mode_atag = env_get("setup_boot_mode_atag"); |
| |
| params = *in_params; |
| t = (struct tag_omap *)¶ms->u; |
| total_size = sizeof(struct tag_header); |
| |
| for (i = 0; omap[i].hdr.tag; i++) { |
| |
| /* skip serial console tag */ |
| if (!setup_console_atag && |
| omap[i].hdr.tag == OMAP_TAG_SERIAL_CONSOLE) |
| continue; |
| |
| size = omap[i].hdr.size + sizeof(struct tag_omap_header); |
| memcpy(t, &omap[i], size); |
| |
| /* set uart tag to 0 - disable serial console */ |
| if (!setup_console_atag && omap[i].hdr.tag == OMAP_TAG_UART) |
| t->u.uart.enabled_uarts = 0; |
| |
| /* change boot reason */ |
| if (setup_boot_reason_atag && |
| omap[i].hdr.tag == OMAP_TAG_BOOT_REASON) { |
| memset(t->u.boot_reason.reason_str, 0, 12); |
| strcpy(t->u.boot_reason.reason_str, |
| setup_boot_reason_atag); |
| } |
| |
| /* change boot mode */ |
| if (setup_boot_mode_atag && |
| omap[i].hdr.tag == OMAP_TAG_VERSION_STR && |
| strcmp(omap[i].u.version.component, "boot-mode") == 0) { |
| memset(t->u.version.version, 0, 12); |
| strcpy(t->u.version.version, setup_boot_mode_atag); |
| } |
| |
| total_size += size; |
| t = tag_omap_next(t); |
| |
| } |
| |
| params->hdr.tag = ATAG_BOARD; |
| params->hdr.size = total_size >> 2; |
| params = tag_next(params); |
| |
| *in_params = params; |
| } |
| |
| /* |
| * Routine: video_hw_init |
| * Description: Set up the GraphicDevice depending on sys_boot. |
| */ |
| void *video_hw_init(void) |
| { |
| /* fill in Graphic Device */ |
| gdev.frameAdrs = 0x8f9c0000; |
| gdev.winSizeX = 800; |
| gdev.winSizeY = 480; |
| gdev.gdfBytesPP = 2; |
| gdev.gdfIndex = GDF_16BIT_565RGB; |
| memset((void *)gdev.frameAdrs, 0, 0xbb800); |
| return (void *) &gdev; |
| } |
| |
| /* |
| * Routine: twl4030_regulator_set_mode |
| * Description: Set twl4030 regulator mode over i2c powerbus. |
| */ |
| static void twl4030_regulator_set_mode(u8 id, u8 mode) |
| { |
| u16 msg = MSG_SINGULAR(DEV_GRP_P1, id, mode); |
| twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, |
| TWL4030_PM_MASTER_PB_WORD_MSB, msg >> 8); |
| twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, |
| TWL4030_PM_MASTER_PB_WORD_LSB, msg & 0xff); |
| } |
| |
| static void omap3_emu_romcode_call(u32 service_id, u32 *parameters) |
| { |
| u32 i, num_params = *parameters; |
| u32 *sram_scratch_space = (u32 *)OMAP3_PUBLIC_SRAM_SCRATCH_AREA; |
| |
| /* |
| * copy the parameters to an un-cached area to avoid coherency |
| * issues |
| */ |
| for (i = 0; i < num_params; i++) { |
| __raw_writel(*parameters, sram_scratch_space); |
| parameters++; |
| sram_scratch_space++; |
| } |
| |
| /* Now make the PPA call */ |
| do_omap3_emu_romcode_call(service_id, OMAP3_PUBLIC_SRAM_SCRATCH_AREA); |
| } |
| |
| void omap3_set_aux_cr_secure(u32 acr) |
| { |
| struct emu_hal_params_rx51 emu_romcode_params = { 0, }; |
| |
| emu_romcode_params.num_params = 2; |
| emu_romcode_params.param1 = acr; |
| |
| omap3_emu_romcode_call(OMAP3_EMU_HAL_API_WRITE_ACR, |
| (u32 *)&emu_romcode_params); |
| } |
| |
| /* |
| * Routine: omap3_update_aux_cr_secure_rx51 |
| * Description: Modify the contents Auxiliary Control Register. |
| * Parameters: |
| * set_bits - bits to set in ACR |
| * clr_bits - bits to clear in ACR |
| */ |
| static void omap3_update_aux_cr_secure_rx51(u32 set_bits, u32 clear_bits) |
| { |
| u32 acr; |
| |
| /* Read ACR */ |
| asm volatile ("mrc p15, 0, %0, c1, c0, 1" : "=r" (acr)); |
| acr &= ~clear_bits; |
| acr |= set_bits; |
| omap3_set_aux_cr_secure(acr); |
| } |
| |
| /* |
| * Routine: misc_init_r |
| * Description: Configure board specific parts. |
| */ |
| int misc_init_r(void) |
| { |
| char buf[12]; |
| u8 state; |
| |
| /* reset lp5523 led */ |
| i2c_set_bus_num(1); |
| state = 0xff; |
| i2c_write(0x32, 0x3d, 1, &state, 1); |
| i2c_set_bus_num(0); |
| |
| /* initialize twl4030 power managment */ |
| twl4030_power_init(); |
| |
| /* set VSIM to 1.8V */ |
| twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VSIM_DEDICATED, |
| TWL4030_PM_RECEIVER_VSIM_VSEL_18, |
| TWL4030_PM_RECEIVER_VSIM_DEV_GRP, |
| TWL4030_PM_RECEIVER_DEV_GRP_P1); |
| |
| /* store I2C access state */ |
| twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER, TWL4030_PM_MASTER_PB_CFG, |
| &state); |
| |
| /* enable I2C access to powerbus (needed for twl4030 regulator) */ |
| twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, TWL4030_PM_MASTER_PB_CFG, |
| 0x02); |
| |
| /* set VAUX3, VSIM and VMMC1 state to active - enable eMMC memory */ |
| twl4030_regulator_set_mode(RES_VAUX3, RES_STATE_ACTIVE); |
| twl4030_regulator_set_mode(RES_VSIM, RES_STATE_ACTIVE); |
| twl4030_regulator_set_mode(RES_VMMC1, RES_STATE_ACTIVE); |
| |
| /* restore I2C access state */ |
| twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, TWL4030_PM_MASTER_PB_CFG, |
| state); |
| |
| /* set env variable attkernaddr for relocated kernel */ |
| sprintf(buf, "%#x", KERNEL_ADDRESS); |
| env_set("attkernaddr", buf); |
| |
| /* initialize omap tags */ |
| init_omap_tags(); |
| |
| /* reuse atags from previous bootloader */ |
| reuse_atags(); |
| |
| omap_die_id_display(); |
| print_cpuinfo(); |
| |
| /* |
| * Cortex-A8(r1p0..r1p2) errata 430973 workaround |
| * Set IBE bit in Auxiliary Control Register |
| * |
| * Call this routine only on real secure device |
| * Qemu does not implement secure PPA and crash |
| */ |
| if (get_device_type() == HS_DEVICE) |
| omap3_update_aux_cr_secure_rx51(1 << 6, 0); |
| |
| return 0; |
| } |
| |
| /* |
| * Routine: set_muxconf_regs |
| * Description: Setting up the configuration Mux registers specific to the |
| * hardware. Many pins need to be moved from protect to primary |
| * mode. |
| */ |
| void set_muxconf_regs(void) |
| { |
| MUX_RX51(); |
| } |
| |
| static unsigned long int twl_wd_time; /* last time of watchdog reset */ |
| static unsigned long int twl_i2c_lock; |
| |
| /* |
| * Routine: hw_watchdog_reset |
| * Description: Reset timeout of twl4030 watchdog. |
| */ |
| void hw_watchdog_reset(void) |
| { |
| u8 timeout = 0; |
| |
| /* do not reset watchdog too often - max every 4s */ |
| if (get_timer(twl_wd_time) < 4 * CONFIG_SYS_HZ) |
| return; |
| |
| /* localy lock twl4030 i2c bus */ |
| if (test_and_set_bit(0, &twl_i2c_lock)) |
| return; |
| |
| /* read actual watchdog timeout */ |
| twl4030_i2c_read_u8(TWL4030_CHIP_PM_RECEIVER, |
| TWL4030_PM_RECEIVER_WATCHDOG_CFG, &timeout); |
| |
| /* timeout 0 means watchdog is disabled */ |
| /* reset watchdog timeout to 31s (maximum) */ |
| if (timeout != 0) |
| twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, |
| TWL4030_PM_RECEIVER_WATCHDOG_CFG, 31); |
| |
| /* store last watchdog reset time */ |
| twl_wd_time = get_timer(0); |
| |
| /* localy unlock twl4030 i2c bus */ |
| test_and_clear_bit(0, &twl_i2c_lock); |
| } |
| |
| /* |
| * TWL4030 keypad handler for cfb_console |
| */ |
| |
| static const char keymap[] = { |
| /* normal */ |
| 'q', 'o', 'p', ',', '\b', 0, 'a', 's', |
| 'w', 'd', 'f', 'g', 'h', 'j', 'k', 'l', |
| 'e', '.', 0, '\r', 0, 'z', 'x', 'c', |
| 'r', 'v', 'b', 'n', 'm', ' ', ' ', 0, |
| 't', 0, 0, 0, 0, 0, 0, 0, |
| 'y', 0, 0, 0, 0, 0, 0, 0, |
| 'u', 0, 0, 0, 0, 0, 0, 0, |
| 'i', 5, 6, 0, 0, 0, 0, 0, |
| /* fn */ |
| '1', '9', '0', '=', '\b', 0, '*', '+', |
| '2', '#', '-', '_', '(', ')', '&', '!', |
| '3', '?', '^', '\r', 0, 156, '$', 238, |
| '4', '/', '\\', '"', '\'', '@', 0, '<', |
| '5', '|', '>', 0, 0, 0, 0, 0, |
| '6', 0, 0, 0, 0, 0, 0, 0, |
| '7', 0, 0, 0, 0, 0, 0, 0, |
| '8', 16, 17, 0, 0, 0, 0, 0, |
| }; |
| |
| static u8 keys[8]; |
| static u8 old_keys[8] = {0, 0, 0, 0, 0, 0, 0, 0}; |
| #define KEYBUF_SIZE 32 |
| static u8 keybuf[KEYBUF_SIZE]; |
| static u8 keybuf_head; |
| static u8 keybuf_tail; |
| |
| /* |
| * Routine: rx51_kp_init |
| * Description: Initialize HW keyboard. |
| */ |
| int rx51_kp_init(void) |
| { |
| int ret = 0; |
| u8 ctrl; |
| ret = twl4030_i2c_read_u8(TWL4030_CHIP_KEYPAD, |
| TWL4030_KEYPAD_KEYP_CTRL_REG, &ctrl); |
| |
| if (ret) |
| return ret; |
| |
| /* turn on keyboard and use hardware scanning */ |
| ctrl |= TWL4030_KEYPAD_CTRL_KBD_ON; |
| ctrl |= TWL4030_KEYPAD_CTRL_SOFT_NRST; |
| ctrl |= TWL4030_KEYPAD_CTRL_SOFTMODEN; |
| ret |= twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD, |
| TWL4030_KEYPAD_KEYP_CTRL_REG, ctrl); |
| /* enable key event status */ |
| ret |= twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD, |
| TWL4030_KEYPAD_KEYP_IMR1, 0xfe); |
| /* enable interrupt generation on rising and falling */ |
| /* this is a workaround for qemu twl4030 emulation */ |
| ret |= twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD, |
| TWL4030_KEYPAD_KEYP_EDR, 0x57); |
| /* enable ISR clear on read */ |
| ret |= twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD, |
| TWL4030_KEYPAD_KEYP_SIH_CTRL, 0x05); |
| return 0; |
| } |
| |
| static void rx51_kp_fill(u8 k, u8 mods) |
| { |
| /* check if some cursor key without meta fn key was pressed */ |
| if (!(mods & 2) && (k == 18 || k == 31 || k == 33 || k == 34)) { |
| keybuf[keybuf_tail++] = '\e'; |
| keybuf_tail %= KEYBUF_SIZE; |
| keybuf[keybuf_tail++] = '['; |
| keybuf_tail %= KEYBUF_SIZE; |
| if (k == 18) /* up */ |
| keybuf[keybuf_tail++] = 'A'; |
| else if (k == 31) /* left */ |
| keybuf[keybuf_tail++] = 'D'; |
| else if (k == 33) /* down */ |
| keybuf[keybuf_tail++] = 'B'; |
| else if (k == 34) /* right */ |
| keybuf[keybuf_tail++] = 'C'; |
| keybuf_tail %= KEYBUF_SIZE; |
| return; |
| } |
| |
| if (mods & 2) { /* fn meta key was pressed */ |
| k = keymap[k+64]; |
| } else { |
| k = keymap[k]; |
| if (mods & 1) { /* ctrl key was pressed */ |
| if (k >= 'a' && k <= 'z') |
| k -= 'a' - 1; |
| } |
| if (mods & 4) { /* shift key was pressed */ |
| if (k >= 'a' && k <= 'z') |
| k += 'A' - 'a'; |
| else if (k == '.') |
| k = ':'; |
| else if (k == ',') |
| k = ';'; |
| } |
| } |
| keybuf[keybuf_tail++] = k; |
| keybuf_tail %= KEYBUF_SIZE; |
| } |
| |
| /* |
| * Routine: rx51_kp_tstc |
| * Description: Test if key was pressed (from buffer). |
| */ |
| int rx51_kp_tstc(struct stdio_dev *sdev) |
| { |
| u8 c, r, dk, i; |
| u8 intr; |
| u8 mods; |
| |
| /* localy lock twl4030 i2c bus */ |
| if (test_and_set_bit(0, &twl_i2c_lock)) |
| return 0; |
| |
| /* twl4030 remembers up to 2 events */ |
| for (i = 0; i < 2; i++) { |
| |
| /* check interrupt register for events */ |
| twl4030_i2c_read_u8(TWL4030_CHIP_KEYPAD, |
| TWL4030_KEYPAD_KEYP_ISR1 + (2 * i), &intr); |
| |
| /* no event */ |
| if (!(intr&1)) |
| continue; |
| |
| /* read the key state */ |
| i2c_read(TWL4030_CHIP_KEYPAD, |
| TWL4030_KEYPAD_FULL_CODE_7_0, 1, keys, 8); |
| |
| /* cut out modifier keys from the keystate */ |
| mods = keys[4] >> 4; |
| keys[4] &= 0x0f; |
| |
| for (c = 0; c < 8; c++) { |
| |
| /* get newly pressed keys only */ |
| dk = ((keys[c] ^ old_keys[c])&keys[c]); |
| old_keys[c] = keys[c]; |
| |
| /* fill the keybuf */ |
| for (r = 0; r < 8; r++) { |
| if (dk&1) |
| rx51_kp_fill((c*8)+r, mods); |
| dk = dk >> 1; |
| } |
| |
| } |
| |
| } |
| |
| /* localy unlock twl4030 i2c bus */ |
| test_and_clear_bit(0, &twl_i2c_lock); |
| |
| return (KEYBUF_SIZE + keybuf_tail - keybuf_head)%KEYBUF_SIZE; |
| } |
| |
| /* |
| * Routine: rx51_kp_getc |
| * Description: Get last pressed key (from buffer). |
| */ |
| int rx51_kp_getc(struct stdio_dev *sdev) |
| { |
| keybuf_head %= KEYBUF_SIZE; |
| while (!rx51_kp_tstc(sdev)) |
| WATCHDOG_RESET(); |
| return keybuf[keybuf_head++]; |
| } |
| |
| /* |
| * Routine: board_mmc_init |
| * Description: Initialize mmc devices. |
| */ |
| int board_mmc_init(bd_t *bis) |
| { |
| omap_mmc_init(0, 0, 0, -1, -1); |
| omap_mmc_init(1, 0, 0, -1, -1); |
| return 0; |
| } |
| |
| void board_mmc_power_init(void) |
| { |
| twl4030_power_mmc_init(0); |
| twl4030_power_mmc_init(1); |
| } |