arch/arm/mach-pxa/zylonite_pxa300.c

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