LXR linux/arch/arm/mach-pxa/zylonite

   1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 * linux/arch/arm/mach-pxa/zylonite_pxa300.c
   4 *
   5 * PXA300/PXA310 specific support code for the
   6 * PXA3xx Development Platform (aka Zylonite)
   7 *
   8 * Copyright (C) 2007 Marvell Internation Ltd.
   9 * 2007-08-21: eric miao <eric.miao@marvell.com>
  10 *             initial version
  11 */
  12
  13#include <linux/module.h>
  14#include <linux/kernel.h>
  15#include <linux/init.h>
  16#include <linux/i2c.h>
  17#include <linux/platform_data/i2c-pxa.h>
  18#include <linux/platform_data/pca953x.h>
  19#include <linux/gpio.h>
  20
  21#include "pxa300.h"
  22#include "devices.h"
  23#include "zylonite.h"
  24
  25#include "generic.h"
  26
  27/* PXA300/PXA310 common configurations */
  28static mfp_cfg_t common_mfp_cfg[] __initdata = {
  29        /* LCD */
  30        GPIO54_LCD_LDD_0,
  31        GPIO55_LCD_LDD_1,
  32        GPIO56_LCD_LDD_2,
  33        GPIO57_LCD_LDD_3,
  34        GPIO58_LCD_LDD_4,
  35        GPIO59_LCD_LDD_5,
  36        GPIO60_LCD_LDD_6,
  37        GPIO61_LCD_LDD_7,
  38        GPIO62_LCD_LDD_8,
  39        GPIO63_LCD_LDD_9,
  40        GPIO64_LCD_LDD_10,
  41        GPIO65_LCD_LDD_11,
  42        GPIO66_LCD_LDD_12,
  43        GPIO67_LCD_LDD_13,
  44        GPIO68_LCD_LDD_14,
  45        GPIO69_LCD_LDD_15,
  46        GPIO70_LCD_LDD_16,
  47        GPIO71_LCD_LDD_17,
  48        GPIO72_LCD_FCLK,
  49        GPIO73_LCD_LCLK,
  50        GPIO74_LCD_PCLK,
  51        GPIO75_LCD_BIAS,
  52        GPIO76_LCD_VSYNC,
  53        GPIO127_LCD_CS_N,
  54        GPIO20_PWM3_OUT,        /* backlight */
  55
  56        /* BTUART */
  57        GPIO111_UART2_RTS,
  58        GPIO112_UART2_RXD | MFP_LPM_EDGE_FALL,
  59        GPIO113_UART2_TXD,
  60        GPIO114_UART2_CTS | MFP_LPM_EDGE_BOTH,
  61
  62        /* STUART */
  63        GPIO109_UART3_TXD,
  64        GPIO110_UART3_RXD | MFP_LPM_EDGE_FALL,
  65
  66        /* AC97 */
  67        GPIO23_AC97_nACRESET,
  68        GPIO24_AC97_SYSCLK,
  69        GPIO29_AC97_BITCLK,
  70        GPIO25_AC97_SDATA_IN_0,
  71        GPIO27_AC97_SDATA_OUT,
  72        GPIO28_AC97_SYNC,
  73        GPIO17_GPIO,    /* SDATA_IN_1 but unused - configure to GPIO */
  74
  75        /* SSP3 */
  76        GPIO91_SSP3_SCLK,
  77        GPIO92_SSP3_FRM,
  78        GPIO93_SSP3_TXD,
  79        GPIO94_SSP3_RXD,
  80
  81        /* WM9713 IRQ */
  82        GPIO26_GPIO,
  83
  84        /* Keypad */
  85        GPIO107_KP_DKIN_0 | MFP_LPM_EDGE_BOTH,
  86        GPIO108_KP_DKIN_1 | MFP_LPM_EDGE_BOTH,
  87        GPIO115_KP_MKIN_0 | MFP_LPM_EDGE_BOTH,
  88        GPIO116_KP_MKIN_1 | MFP_LPM_EDGE_BOTH,
  89        GPIO117_KP_MKIN_2 | MFP_LPM_EDGE_BOTH,
  90        GPIO118_KP_MKIN_3 | MFP_LPM_EDGE_BOTH,
  91        GPIO119_KP_MKIN_4 | MFP_LPM_EDGE_BOTH,
  92        GPIO120_KP_MKIN_5 | MFP_LPM_EDGE_BOTH,
  93        GPIO2_2_KP_MKIN_6 | MFP_LPM_EDGE_BOTH,
  94        GPIO3_2_KP_MKIN_7 | MFP_LPM_EDGE_BOTH,
  95        GPIO121_KP_MKOUT_0,
  96        GPIO122_KP_MKOUT_1,
  97        GPIO123_KP_MKOUT_2,
  98        GPIO124_KP_MKOUT_3,
  99        GPIO125_KP_MKOUT_4,
 100        GPIO4_2_KP_MKOUT_5,
 101        GPIO5_2_KP_MKOUT_6,
 102        GPIO6_2_KP_MKOUT_7,
 103
 104        /* MMC1 */
 105        GPIO3_MMC1_DAT0,
 106        GPIO4_MMC1_DAT1 | MFP_LPM_EDGE_BOTH,
 107        GPIO5_MMC1_DAT2,
 108        GPIO6_MMC1_DAT3,
 109        GPIO7_MMC1_CLK,
 110        GPIO8_MMC1_CMD, /* CMD0 for slot 0 */
 111        GPIO15_GPIO,    /* CMD1 default as GPIO for slot 0 */
 112
 113        /* MMC2 */
 114        GPIO9_MMC2_DAT0,
 115        GPIO10_MMC2_DAT1 | MFP_LPM_EDGE_BOTH,
 116        GPIO11_MMC2_DAT2,
 117        GPIO12_MMC2_DAT3,
 118        GPIO13_MMC2_CLK,
 119        GPIO14_MMC2_CMD,
 120
 121        /* USB Host */
 122        GPIO0_2_USBH_PEN,
 123        GPIO1_2_USBH_PWR,
 124
 125        /* Standard I2C */
 126        GPIO21_I2C_SCL,
 127        GPIO22_I2C_SDA,
 128
 129        /* GPIO */
 130        GPIO18_GPIO | MFP_PULL_HIGH,    /* GPIO Expander #0 INT_N */
 131        GPIO19_GPIO | MFP_PULL_HIGH,    /* GPIO Expander #1 INT_N */
 132};
 133
 134static mfp_cfg_t pxa300_mfp_cfg[] __initdata = {
 135        /* FFUART */
 136        GPIO30_UART1_RXD | MFP_LPM_EDGE_FALL,
 137        GPIO31_UART1_TXD,
 138        GPIO32_UART1_CTS,
 139        GPIO37_UART1_RTS,
 140        GPIO33_UART1_DCD,
 141        GPIO34_UART1_DSR | MFP_LPM_EDGE_FALL,
 142        GPIO35_UART1_RI,
 143        GPIO36_UART1_DTR,
 144
 145        /* Ethernet */
 146        GPIO2_nCS3,
 147        GPIO99_GPIO,
 148};
 149
 150static mfp_cfg_t pxa310_mfp_cfg[] __initdata = {
 151        /* FFUART */
 152        GPIO99_UART1_RXD | MFP_LPM_EDGE_FALL,
 153        GPIO100_UART1_TXD,
 154        GPIO101_UART1_CTS,
 155        GPIO106_UART1_RTS,
 156
 157        /* Ethernet */
 158        GPIO2_nCS3,
 159        GPIO102_GPIO,
 160
 161        /* MMC3 */
 162        GPIO7_2_MMC3_DAT0,
 163        GPIO8_2_MMC3_DAT1 | MFP_LPM_EDGE_BOTH,
 164        GPIO9_2_MMC3_DAT2,
 165        GPIO10_2_MMC3_DAT3,
 166        GPIO103_MMC3_CLK,
 167        GPIO105_MMC3_CMD,
 168};
 169
 170#define NUM_LCD_DETECT_PINS     7
 171
 172static int lcd_detect_pins[] __initdata = {
 173        MFP_PIN_GPIO71, /* LCD_LDD_17 - ORIENT */
 174        MFP_PIN_GPIO70, /* LCD_LDD_16 - LCDID[5] */
 175        MFP_PIN_GPIO75, /* LCD_BIAS   - LCDID[4] */
 176        MFP_PIN_GPIO73, /* LCD_LCLK   - LCDID[3] */
 177        MFP_PIN_GPIO72, /* LCD_FCLK   - LCDID[2] */
 178        MFP_PIN_GPIO127,/* LCD_CS_N   - LCDID[1] */
 179        MFP_PIN_GPIO76, /* LCD_VSYNC  - LCDID[0] */
 180};
 181
 182static void __init zylonite_detect_lcd_panel(void)
 183{
 184        unsigned long mfpr_save[NUM_LCD_DETECT_PINS];
 185        int i, gpio, id = 0;
 186
 187        /* save the original MFP settings of these pins and configure
 188         * them as GPIO Input, DS01X, Pull Neither, Edge Clear
 189         */
 190        for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
 191                mfpr_save[i] = pxa3xx_mfp_read(lcd_detect_pins[i]);
 192                pxa3xx_mfp_write(lcd_detect_pins[i], 0x8440);
 193        }
 194
 195        for (i = 0; i < NUM_LCD_DETECT_PINS; i++) {
 196                id = id << 1;
 197                gpio = mfp_to_gpio(lcd_detect_pins[i]);
 198                gpio_request(gpio, "LCD_ID_PINS");
 199                gpio_direction_input(gpio);
 200
 201                if (gpio_get_value(gpio))
 202                        id = id | 0x1;
 203                gpio_free(gpio);
 204        }
 205
 206        /* lcd id, flush out bit 1 */
 207        lcd_id = id & 0x3d;
 208
 209        /* lcd orientation, portrait or landscape */
 210        lcd_orientation = (id >> 6) & 0x1;
 211
 212        /* restore the original MFP settings */
 213        for (i = 0; i < NUM_LCD_DETECT_PINS; i++)
 214                pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
 215}
 216
 217#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
 218static struct pca953x_platform_data gpio_exp[] = {
 219        [0] = {
 220                .gpio_base      = 128,
 221        },
 222        [1] = {
 223                .gpio_base      = 144,
 224        },
 225};
 226
 227static struct i2c_board_info zylonite_i2c_board_info[] = {
 228        {
 229                .type           = "pca9539",
 230                .dev_name       = "pca9539-a",
 231                .addr           = 0x74,
 232                .platform_data  = &gpio_exp[0],
 233                .irq            = PXA_GPIO_TO_IRQ(18),
 234        }, {
 235                .type           = "pca9539",
 236                .dev_name       = "pca9539-b",
 237                .addr           = 0x75,
 238                .platform_data  = &gpio_exp[1],
 239                .irq            = PXA_GPIO_TO_IRQ(19),
 240        },
 241};
 242
 243static void __init zylonite_init_i2c(void)
 244{
 245        pxa_set_i2c_info(NULL);
 246        i2c_register_board_info(0, ARRAY_AND_SIZE(zylonite_i2c_board_info));
 247}
 248#else
 249static inline void zylonite_init_i2c(void) {}
 250#endif
 251
 252void __init zylonite_pxa300_init(void)
 253{
 254        if (cpu_is_pxa300() || cpu_is_pxa310()) {
 255                /* initialize MFP */
 256                pxa3xx_mfp_config(ARRAY_AND_SIZE(common_mfp_cfg));
 257
 258                /* detect LCD panel */
 259                zylonite_detect_lcd_panel();
 260
 261                /* WM9713 IRQ */
 262                wm9713_irq = mfp_to_gpio(MFP_PIN_GPIO26);
 263
 264                zylonite_init_i2c();
 265        }
 266
 267        if (cpu_is_pxa300()) {
 268                pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa300_mfp_cfg));
 269                gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO99);
 270        }
 271
 272        if (cpu_is_pxa310()) {
 273                pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa310_mfp_cfg));
 274                gpio_eth_irq = mfp_to_gpio(MFP_PIN_GPIO102);
 275        }
 276
 277        /* GPIOs for Debug LEDs */
 278        gpio_debug_led1 = EXT_GPIO(25);
 279        gpio_debug_led2 = EXT_GPIO(26);
 280}
 281