| /* |
| * drivers/display/lcd/aml_lcd_gpio.c |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the named License, |
| * or any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| */ |
| |
| #include <common.h> |
| #include <errno.h> |
| #include <dm.h> |
| #include <asm/gpio.h> |
| #include <amlogic/aml_lcd.h> |
| #include "aml_lcd_reg.h" |
| #include "aml_lcd_common.h" |
| |
| #define LCD_GPIO_SYS_API |
| |
| #ifdef LCD_GPIO_SYS_API |
| int aml_lcd_gpio_name_map_num(const char *name) |
| { |
| int gpio; |
| #if defined(CONFIG_DM_GPIO) |
| int ret; |
| #endif |
| |
| #if defined(CONFIG_DM_GPIO) |
| ret = gpio_lookup_name(name, NULL, NULL, (unsigned int *)&gpio); |
| if (ret) { |
| LCDERR("gpio: wrong name %s\n", name); |
| return LCD_GPIO_MAX; |
| } |
| #else |
| /* turn the gpio name into a gpio number */ |
| gpio = simple_strtoul(name, NULL, 10); |
| if (gpio < 0) { |
| LCDERR("gpio: wrong name %s\n", name); |
| return LCD_GPIO_MAX; |
| } |
| #endif |
| if (lcd_debug_print_flag) |
| LCDPR("gpio: %s, %d\n", name, gpio); |
| return gpio; |
| } |
| |
| int aml_lcd_gpio_set(int gpio, int value) |
| { |
| int ret = 0; |
| |
| if (gpio >= LCD_GPIO_MAX) |
| return -1; |
| if (lcd_debug_print_flag) |
| LCDPR("gpio: %d, value: %d\n", gpio, value); |
| /* grab the pin before we tweak it */ |
| ret = gpio_request(gpio, "aml_lcd_gpio"); |
| if (ret && ret != -EBUSY) { |
| LCDERR("gpio: requesting pin %u failed\n", gpio); |
| return -1; |
| } |
| |
| /* finally, let's do it: set direction and exec command */ |
| switch (value) { |
| case LCD_GPIO_OUTPUT_LOW: |
| case LCD_GPIO_OUTPUT_HIGH: |
| ret = gpio_direction_output(gpio, value); |
| break; |
| case LCD_GPIO_INPUT: |
| default: |
| ret = gpio_direction_input(gpio); |
| break; |
| } |
| if (ret != -EBUSY) |
| gpio_free(gpio); |
| |
| return 0; |
| } |
| |
| unsigned int aml_lcd_gpio_input_get(int gpio) |
| { |
| unsigned int value; |
| |
| if (gpio >= LCD_GPIO_MAX) |
| return 0; |
| gpio_direction_input(gpio); |
| value = gpio_get_value(gpio); |
| return value; |
| } |
| |
| #else |
| struct aml_lcd_gpio_s { |
| unsigned int bank; |
| unsigned int offset; |
| }; |
| |
| static const char *aml_lcd_gpio_table[]={ |
| "GPIOAO_0", |
| "GPIOAO_1", |
| "GPIOAO_2", |
| "GPIOAO_3", |
| "GPIOAO_4", |
| "GPIOAO_5", |
| "GPIOAO_6", |
| "GPIOAO_7", |
| "GPIOAO_8", |
| "GPIOAO_9", |
| "GPIOAO_10", |
| "GPIOAO_11", |
| "GPIOAO_12", |
| "GPIOAO_13", |
| "GPIOZ_0", |
| "GPIOZ_1", |
| "GPIOZ_2", |
| "GPIOZ_3", |
| "GPIOZ_4", |
| "GPIOZ_5", |
| "GPIOZ_6", |
| "GPIOZ_7", |
| "GPIOZ_8", |
| "GPIOZ_9", |
| "GPIOZ_10", |
| "GPIOZ_11", |
| "GPIOZ_12", |
| "GPIOZ_13", |
| "GPIOZ_14", |
| "GPIOZ_15", |
| "GPIOZ_16", |
| "GPIOZ_17", |
| "GPIOZ_18", |
| "GPIOZ_19", |
| "GPIOZ_20", |
| "GPIOH_0", |
| "GPIOH_1", |
| "GPIOH_2", |
| "GPIOH_3", |
| "GPIOH_4", |
| "GPIOH_5", |
| "GPIOH_6", |
| "GPIOH_7", |
| "GPIOH_8", |
| "GPIOH_9", |
| "GPIOH_10", |
| "BOOT_0", |
| "BOOT_1", |
| "BOOT_2", |
| "BOOT_3", |
| "BOOT_4", |
| "BOOT_5", |
| "BOOT_6", |
| "BOOT_7", |
| "BOOT_8", |
| "BOOT_9", |
| "BOOT_10", |
| "BOOT_11", |
| "BOOT_12", |
| "BOOT_13", |
| "BOOT_14", |
| "BOOT_15", |
| "BOOT_16", |
| "BOOT_17", |
| "BOOT_18", |
| "CARD_0", |
| "CARD_1", |
| "CARD_2", |
| "CARD_3", |
| "CARD_4", |
| "CARD_5", |
| "CARD_6", |
| "GPIOW_0", |
| "GPIOW_1", |
| "GPIOW_2", |
| "GPIOW_3", |
| "GPIOW_4", |
| "GPIOW_5", |
| "GPIOW_6", |
| "GPIOW_7", |
| "GPIOW_8", |
| "GPIOW_9", |
| "GPIOW_10", |
| "GPIOW_11", |
| "GPIOW_12", |
| "GPIOW_13", |
| "GPIOW_14", |
| "GPIOW_15", |
| "GPIOW_16", |
| "GPIOW_17", |
| "GPIOW_18", |
| "GPIOW_19", |
| "GPIOW_20", |
| "GPIOY_0", |
| "GPIOY_1", |
| "GPIOY_2", |
| "GPIOY_3", |
| "GPIOY_4", |
| "GPIOY_5", |
| "GPIOY_6", |
| "GPIOY_7", |
| "GPIOY_8", |
| "GPIOY_9", |
| "GPIOY_10", |
| "GPIOY_11", |
| "GPIOY_12", |
| "GPIOY_13", |
| "GPIOX_0", |
| "GPIOX_1", |
| "GPIOX_2", |
| "GPIOX_3", |
| "GPIOX_4", |
| "GPIOX_5", |
| "GPIOX_6", |
| "GPIOX_7", |
| "GPIOX_8", |
| "GPIOX_9", |
| "GPIOX_10", |
| "GPIOX_11", |
| "GPIOX_12", |
| "GPIOX_13", |
| "GPIOX_14", |
| "GPIOX_15", |
| "GPIOX_16", |
| "GPIOX_17", |
| "GPIOX_18", |
| "GPIOX_19", |
| "GPIOX_20", |
| "GPIOX_21", |
| "GPIOX_22", |
| "GPIOX_23", |
| "GPIOX_24", |
| "GPIOX_25", |
| "GPIOX_26", |
| "GPIOX_27", |
| "GPIOCLK_0", |
| "GPIO_TEST_N", |
| "GPIO_MAX", |
| }; |
| |
| static unsigned int aml_lcd_gpio_ctrl[][6] = { |
| //oen_reg, oen_bit, out_reg, out_bit, in_reg, in_bit |
| {AO_GPIO_O_EN_N, 0, AO_GPIO_O_EN_N, 16, AO_GPIO_I, 0, }, //GPIOAO |
| {PREG_PAD_GPIO2_EN_N, 0, PREG_PAD_GPIO2_O, 0, PREG_PAD_GPIO2_I, 0, }, //BOOT |
| {PREG_PAD_GPIO2_EN_N, 20, PREG_PAD_GPIO2_O, 20, PREG_PAD_GPIO2_I, 20,}, //CARD |
| {PREG_PAD_GPIO0_EN_N, 0, PREG_PAD_GPIO0_O, 0, PREG_PAD_GPIO0_I, 0, }, //GPIOW |
| {PREG_PAD_GPIO3_EN_N, 0, PREG_PAD_GPIO3_O, 0, PREG_PAD_GPIO3_I, 0, }, //GPIOZ |
| {PREG_PAD_GPIO1_EN_N, 20, PREG_PAD_GPIO1_O, 20, PREG_PAD_GPIO1_I, 20,}, //GPIOH |
| {PREG_PAD_GPIO4_EN_N, 0, PREG_PAD_GPIO4_O, 0, PREG_PAD_GPIO4_I, 0, }, //GPIOX |
| {PREG_PAD_GPIO1_EN_N, 0, PREG_PAD_GPIO1_O, 0, PREG_PAD_GPIO1_I, 0, }, //GPIOY |
| {PREG_PAD_GPIO3_EN_N, 24, PREG_PAD_GPIO3_O, 24, PREG_PAD_GPIO3_I, 24,} //GPIOCLK |
| }; |
| |
| int aml_lcd_gpio_name_map_num(const char *name) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(aml_lcd_gpio_table); i++) { |
| if (!strcmp(name, aml_lcd_gpio_table[i])) |
| break; |
| } |
| if (i == ARRAY_SIZE(aml_lcd_gpio_table)) { |
| printf("wrong gpio name %s, i=%d\n", name, i); |
| i = -1; |
| } |
| return i; |
| } |
| |
| static int aml_lcd_gpio_bank_offset(int gpio, struct aml_lcd_gpio_s *gpio_s) |
| { |
| int ret = 0; |
| |
| if ((gpio >= GPIOAO_0) && (gpio <= GPIOAO_13)) { |
| gpio_s->bank = 0; |
| gpio_s->offset = gpio - GPIOAO_0; |
| } else if ((gpio >= PIN_BOOT_0) && (gpio <= PIN_BOOT_18)) { |
| gpio_s->bank = 1; |
| gpio_s->offset = gpio - PIN_BOOT_0; |
| } else if ((gpio >= PIN_CARD_0) && (gpio <= PIN_CARD_6)) { |
| gpio_s->bank = 2; |
| gpio_s->offset = gpio - PIN_CARD_0; |
| } else if ((gpio >= PIN_GPIOW_0) && (gpio <= PIN_GPIOW_20)) { |
| gpio_s->bank = 3; |
| gpio_s->offset = gpio - PIN_GPIOW_0; |
| } else if ((gpio >= PIN_GPIOZ_0) && (gpio <= PIN_GPIOZ_20)) { |
| gpio_s->bank = 4; |
| gpio_s->offset = gpio - PIN_GPIOZ_0; |
| } else if ((gpio >= PIN_GPIOH_0) && (gpio <= PIN_GPIOH_10)) { |
| gpio_s->bank = 5; |
| gpio_s->offset = gpio - PIN_GPIOH_0; |
| } else if ((gpio >= PIN_GPIOX_0) && (gpio <= PIN_GPIOX_27)) { |
| gpio_s->bank = 6; |
| gpio_s->offset = gpio - PIN_GPIOX_0; |
| } else if ((gpio >= PIN_GPIOY_0) && (gpio <= PIN_GPIOY_13)) { |
| gpio_s->bank = 7; |
| gpio_s->offset = gpio - PIN_GPIOY_0; |
| } else { |
| printf("Wrong GPIO Port number: %d\n", gpio); |
| ret = -1; |
| } |
| |
| return ret; |
| } |
| |
| int aml_lcd_gpio_set(int gpio, int value) |
| { |
| struct aml_lcd_gpio_s gpio_s; |
| int ret = 0; |
| |
| ret = aml_lcd_gpio_bank_offset(gpio, &gpio_s); |
| if (ret) |
| return -1; |
| |
| switch (value) { |
| case LCD_GPIO_OUTPUT_LOW: |
| if ((gpio >= GPIOAO_0) && (gpio <= GPIOAO_13)) { |
| lcd_aobus_setb(aml_lcd_gpio_ctrl[gpio_s.bank][2], 0, |
| (aml_lcd_gpio_ctrl[gpio_s.bank][3] + gpio_s.offset), 1); |
| lcd_aobus_setb(aml_lcd_gpio_ctrl[gpio_s.bank][0], 0, |
| (aml_lcd_gpio_ctrl[gpio_s.bank][1] + gpio_s.offset), 1); |
| } else { |
| lcd_periphs_setb(aml_lcd_gpio_ctrl[gpio_s.bank][2], 0, |
| (aml_lcd_gpio_ctrl[gpio_s.bank][3] + gpio_s.offset), 1); |
| lcd_periphs_setb(aml_lcd_gpio_ctrl[gpio_s.bank][0], 0, |
| (aml_lcd_gpio_ctrl[gpio_s.bank][1] + gpio_s.offset), 1); |
| } |
| break; |
| case LCD_GPIO_OUTPUT_HIGH: |
| if ((gpio >= GPIOAO_0) && (gpio <= GPIOAO_13)) { |
| lcd_aobus_setb(aml_lcd_gpio_ctrl[gpio_s.bank][2], 1, |
| (aml_lcd_gpio_ctrl[gpio_s.bank][3] + gpio_s.offset), 1); |
| lcd_aobus_setb(aml_lcd_gpio_ctrl[gpio_s.bank][0], 0, |
| (aml_lcd_gpio_ctrl[gpio_s.bank][1] + gpio_s.offset), 1); |
| } else { |
| lcd_periphs_setb(aml_lcd_gpio_ctrl[gpio_s.bank][2], 1, |
| (aml_lcd_gpio_ctrl[gpio_s.bank][3] + gpio_s.offset), 1); |
| lcd_periphs_setb(aml_lcd_gpio_ctrl[gpio_s.bank][0], 0, |
| (aml_lcd_gpio_ctrl[gpio_s.bank][1] + gpio_s.offset), 1); |
| } |
| break; |
| case LCD_GPIO_INPUT: |
| default: |
| if ((gpio >= GPIOAO_0) && (gpio <= GPIOAO_13)) { |
| lcd_aobus_setb(aml_lcd_gpio_ctrl[gpio_s.bank][0], 1, |
| (aml_lcd_gpio_ctrl[gpio_s.bank][1] + gpio_s.offset), 1); |
| } else { |
| lcd_periphs_setb(aml_lcd_gpio_ctrl[gpio_s.bank][0], 1, |
| (aml_lcd_gpio_ctrl[gpio_s.bank][1] + gpio_s.offset), 1); |
| } |
| break; |
| } |
| |
| return 0; |
| } |
| |
| unsigned int aml_lcd_gpio_input_get(int gpio) |
| { |
| struct aml_lcd_gpio_s gpio_s; |
| unsigned int ret = 0; |
| |
| ret = aml_lcd_gpio_bank_offset(gpio, &gpio_s); |
| if (ret) |
| return -1; |
| |
| if ((gpio >= GPIOAO_0) && (gpio <= GPIOAO_13)) { |
| ret = lcd_aobus_getb(aml_lcd_gpio_ctrl[gpio_s.bank][0], |
| (aml_lcd_gpio_ctrl[gpio_s.bank][1] + gpio_s.offset), 1); |
| } else { |
| ret = lcd_periphs_getb(aml_lcd_gpio_ctrl[gpio_s.bank][0], |
| (aml_lcd_gpio_ctrl[gpio_s.bank][1] + gpio_s.offset), 1); |
| } |
| |
| return ret; |
| } |
| #endif |
| |
