drivers/pinctrl/freescale/pinctrl-imx21.c

   1 /*
   2  * i.MX21 pinctrl driver based on imx pinmux core
   3  *
   4  * Copyright (C) 2014 Alexander Shiyan <shc_work@mail.ru>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  */
  11
  12 #include <linux/init.h>
  13 #include <linux/of.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/pinctrl/pinctrl.h>
  16
  17 #include "pinctrl-imx1.h"
  18
  19 #define PAD_ID(port, pin)       ((port) * 32 + (pin))
  20 #define PA      0
  21 #define PB      1
  22 #define PC      2
  23 #define PD      3
  24 #define PE      4
  25 #define PF      5
  26
  27 enum imx21_pads {
  28         MX21_PAD_LSCLK          = PAD_ID(PA, 5),
  29         MX21_PAD_LD0            = PAD_ID(PA, 6),
  30         MX21_PAD_LD1            = PAD_ID(PA, 7),
  31         MX21_PAD_LD2            = PAD_ID(PA, 8),
  32         MX21_PAD_LD3            = PAD_ID(PA, 9),
  33         MX21_PAD_LD4            = PAD_ID(PA, 10),
  34         MX21_PAD_LD5            = PAD_ID(PA, 11),
  35         MX21_PAD_LD6            = PAD_ID(PA, 12),
  36         MX21_PAD_LD7            = PAD_ID(PA, 13),
  37         MX21_PAD_LD8            = PAD_ID(PA, 14),
  38         MX21_PAD_LD9            = PAD_ID(PA, 15),
  39         MX21_PAD_LD10           = PAD_ID(PA, 16),
  40         MX21_PAD_LD11           = PAD_ID(PA, 17),
  41         MX21_PAD_LD12           = PAD_ID(PA, 18),
  42         MX21_PAD_LD13           = PAD_ID(PA, 19),
  43         MX21_PAD_LD14           = PAD_ID(PA, 20),
  44         MX21_PAD_LD15           = PAD_ID(PA, 21),
  45         MX21_PAD_LD16           = PAD_ID(PA, 22),
  46         MX21_PAD_LD17           = PAD_ID(PA, 23),
  47         MX21_PAD_REV            = PAD_ID(PA, 24),
  48         MX21_PAD_CLS            = PAD_ID(PA, 25),
  49         MX21_PAD_PS             = PAD_ID(PA, 26),
  50         MX21_PAD_SPL_SPR        = PAD_ID(PA, 27),
  51         MX21_PAD_HSYNC          = PAD_ID(PA, 28),
  52         MX21_PAD_VSYNC          = PAD_ID(PA, 29),
  53         MX21_PAD_CONTRAST       = PAD_ID(PA, 30),
  54         MX21_PAD_OE_ACD         = PAD_ID(PA, 31),
  55         MX21_PAD_SD2_D0         = PAD_ID(PB, 4),
  56         MX21_PAD_SD2_D1         = PAD_ID(PB, 5),
  57         MX21_PAD_SD2_D2         = PAD_ID(PB, 6),
  58         MX21_PAD_SD2_D3         = PAD_ID(PB, 7),
  59         MX21_PAD_SD2_CMD        = PAD_ID(PB, 8),
  60         MX21_PAD_SD2_CLK        = PAD_ID(PB, 9),
  61         MX21_PAD_CSI_D0         = PAD_ID(PB, 10),
  62         MX21_PAD_CSI_D1         = PAD_ID(PB, 11),
  63         MX21_PAD_CSI_D2         = PAD_ID(PB, 12),
  64         MX21_PAD_CSI_D3         = PAD_ID(PB, 13),
  65         MX21_PAD_CSI_D4         = PAD_ID(PB, 14),
  66         MX21_PAD_CSI_MCLK       = PAD_ID(PB, 15),
  67         MX21_PAD_CSI_PIXCLK     = PAD_ID(PB, 16),
  68         MX21_PAD_CSI_D5         = PAD_ID(PB, 17),
  69         MX21_PAD_CSI_D6         = PAD_ID(PB, 18),
  70         MX21_PAD_CSI_D7         = PAD_ID(PB, 19),
  71         MX21_PAD_CSI_VSYNC      = PAD_ID(PB, 20),
  72         MX21_PAD_CSI_HSYNC      = PAD_ID(PB, 21),
  73         MX21_PAD_USB_BYP        = PAD_ID(PB, 22),
  74         MX21_PAD_USB_PWR        = PAD_ID(PB, 23),
  75         MX21_PAD_USB_OC         = PAD_ID(PB, 24),
  76         MX21_PAD_USBH_ON        = PAD_ID(PB, 25),
  77         MX21_PAD_USBH1_FS       = PAD_ID(PB, 26),
  78         MX21_PAD_USBH1_OE       = PAD_ID(PB, 27),
  79         MX21_PAD_USBH1_TXDM     = PAD_ID(PB, 28),
  80         MX21_PAD_USBH1_TXDP     = PAD_ID(PB, 29),
  81         MX21_PAD_USBH1_RXDM     = PAD_ID(PB, 30),
  82         MX21_PAD_USBH1_RXDP     = PAD_ID(PB, 31),
  83         MX21_PAD_USBG_SDA       = PAD_ID(PC, 5),
  84         MX21_PAD_USBG_SCL       = PAD_ID(PC, 6),
  85         MX21_PAD_USBG_ON        = PAD_ID(PC, 7),
  86         MX21_PAD_USBG_FS        = PAD_ID(PC, 8),
  87         MX21_PAD_USBG_OE        = PAD_ID(PC, 9),
  88         MX21_PAD_USBG_TXDM      = PAD_ID(PC, 10),
  89         MX21_PAD_USBG_TXDP      = PAD_ID(PC, 11),
  90         MX21_PAD_USBG_RXDM      = PAD_ID(PC, 12),
  91         MX21_PAD_USBG_RXDP      = PAD_ID(PC, 13),
  92         MX21_PAD_TOUT           = PAD_ID(PC, 14),
  93         MX21_PAD_TIN            = PAD_ID(PC, 15),
  94         MX21_PAD_SAP_FS         = PAD_ID(PC, 16),
  95         MX21_PAD_SAP_RXD        = PAD_ID(PC, 17),
  96         MX21_PAD_SAP_TXD        = PAD_ID(PC, 18),
  97         MX21_PAD_SAP_CLK        = PAD_ID(PC, 19),
  98         MX21_PAD_SSI1_FS        = PAD_ID(PC, 20),
  99         MX21_PAD_SSI1_RXD       = PAD_ID(PC, 21),
 100         MX21_PAD_SSI1_TXD       = PAD_ID(PC, 22),
 101         MX21_PAD_SSI1_CLK       = PAD_ID(PC, 23),
 102         MX21_PAD_SSI2_FS        = PAD_ID(PC, 24),
 103         MX21_PAD_SSI2_RXD       = PAD_ID(PC, 25),
 104         MX21_PAD_SSI2_TXD       = PAD_ID(PC, 26),
 105         MX21_PAD_SSI2_CLK       = PAD_ID(PC, 27),
 106         MX21_PAD_SSI3_FS        = PAD_ID(PC, 28),
 107         MX21_PAD_SSI3_RXD       = PAD_ID(PC, 29),
 108         MX21_PAD_SSI3_TXD       = PAD_ID(PC, 30),
 109         MX21_PAD_SSI3_CLK       = PAD_ID(PC, 31),
 110         MX21_PAD_I2C_DATA       = PAD_ID(PD, 17),
 111         MX21_PAD_I2C_CLK        = PAD_ID(PD, 18),
 112         MX21_PAD_CSPI2_SS2      = PAD_ID(PD, 19),
 113         MX21_PAD_CSPI2_SS1      = PAD_ID(PD, 20),
 114         MX21_PAD_CSPI2_SS0      = PAD_ID(PD, 21),
 115         MX21_PAD_CSPI2_SCLK     = PAD_ID(PD, 22),
 116         MX21_PAD_CSPI2_MISO     = PAD_ID(PD, 23),
 117         MX21_PAD_CSPI2_MOSI     = PAD_ID(PD, 24),
 118         MX21_PAD_CSPI1_RDY      = PAD_ID(PD, 25),
 119         MX21_PAD_CSPI1_SS2      = PAD_ID(PD, 26),
 120         MX21_PAD_CSPI1_SS1      = PAD_ID(PD, 27),
 121         MX21_PAD_CSPI1_SS0      = PAD_ID(PD, 28),
 122         MX21_PAD_CSPI1_SCLK     = PAD_ID(PD, 29),
 123         MX21_PAD_CSPI1_MISO     = PAD_ID(PD, 30),
 124         MX21_PAD_CSPI1_MOSI     = PAD_ID(PD, 31),
 125         MX21_PAD_TEST_WB2       = PAD_ID(PE, 0),
 126         MX21_PAD_TEST_WB1       = PAD_ID(PE, 1),
 127         MX21_PAD_TEST_WB0       = PAD_ID(PE, 2),
 128         MX21_PAD_UART2_CTS      = PAD_ID(PE, 3),
 129         MX21_PAD_UART2_RTS      = PAD_ID(PE, 4),
 130         MX21_PAD_PWMO           = PAD_ID(PE, 5),
 131         MX21_PAD_UART2_TXD      = PAD_ID(PE, 6),
 132         MX21_PAD_UART2_RXD      = PAD_ID(PE, 7),
 133         MX21_PAD_UART3_TXD      = PAD_ID(PE, 8),
 134         MX21_PAD_UART3_RXD      = PAD_ID(PE, 9),
 135         MX21_PAD_UART3_CTS      = PAD_ID(PE, 10),
 136         MX21_PAD_UART3_RTS      = PAD_ID(PE, 11),
 137         MX21_PAD_UART1_TXD      = PAD_ID(PE, 12),
 138         MX21_PAD_UART1_RXD      = PAD_ID(PE, 13),
 139         MX21_PAD_UART1_CTS      = PAD_ID(PE, 14),
 140         MX21_PAD_UART1_RTS      = PAD_ID(PE, 15),
 141         MX21_PAD_RTCK           = PAD_ID(PE, 16),
 142         MX21_PAD_RESET_OUT      = PAD_ID(PE, 17),
 143         MX21_PAD_SD1_D0         = PAD_ID(PE, 18),
 144         MX21_PAD_SD1_D1         = PAD_ID(PE, 19),
 145         MX21_PAD_SD1_D2         = PAD_ID(PE, 20),
 146         MX21_PAD_SD1_D3         = PAD_ID(PE, 21),
 147         MX21_PAD_SD1_CMD        = PAD_ID(PE, 22),
 148         MX21_PAD_SD1_CLK        = PAD_ID(PE, 23),
 149         MX21_PAD_NFRB           = PAD_ID(PF, 0),
 150         MX21_PAD_NFCE           = PAD_ID(PF, 1),
 151         MX21_PAD_NFWP           = PAD_ID(PF, 2),
 152         MX21_PAD_NFCLE          = PAD_ID(PF, 3),
 153         MX21_PAD_NFALE          = PAD_ID(PF, 4),
 154         MX21_PAD_NFRE           = PAD_ID(PF, 5),
 155         MX21_PAD_NFWE           = PAD_ID(PF, 6),
 156         MX21_PAD_NFIO0          = PAD_ID(PF, 7),
 157         MX21_PAD_NFIO1          = PAD_ID(PF, 8),
 158         MX21_PAD_NFIO2          = PAD_ID(PF, 9),
 159         MX21_PAD_NFIO3          = PAD_ID(PF, 10),
 160         MX21_PAD_NFIO4          = PAD_ID(PF, 11),
 161         MX21_PAD_NFIO5          = PAD_ID(PF, 12),
 162         MX21_PAD_NFIO6          = PAD_ID(PF, 13),
 163         MX21_PAD_NFIO7          = PAD_ID(PF, 14),
 164         MX21_PAD_CLKO           = PAD_ID(PF, 15),
 165         MX21_PAD_RESERVED       = PAD_ID(PF, 16),
 166         MX21_PAD_CS4            = PAD_ID(PF, 21),
 167         MX21_PAD_CS5            = PAD_ID(PF, 22),
 168 };
 169
 170 /* Pad names for the pinmux subsystem */
 171 static const struct pinctrl_pin_desc imx21_pinctrl_pads[] = {
 172         IMX_PINCTRL_PIN(MX21_PAD_LSCLK),
 173         IMX_PINCTRL_PIN(MX21_PAD_LD0),
 174         IMX_PINCTRL_PIN(MX21_PAD_LD1),
 175         IMX_PINCTRL_PIN(MX21_PAD_LD2),
 176         IMX_PINCTRL_PIN(MX21_PAD_LD3),
 177         IMX_PINCTRL_PIN(MX21_PAD_LD4),
 178         IMX_PINCTRL_PIN(MX21_PAD_LD5),
 179         IMX_PINCTRL_PIN(MX21_PAD_LD6),
 180         IMX_PINCTRL_PIN(MX21_PAD_LD7),
 181         IMX_PINCTRL_PIN(MX21_PAD_LD8),
 182         IMX_PINCTRL_PIN(MX21_PAD_LD9),
 183         IMX_PINCTRL_PIN(MX21_PAD_LD10),
 184         IMX_PINCTRL_PIN(MX21_PAD_LD11),
 185         IMX_PINCTRL_PIN(MX21_PAD_LD12),
 186         IMX_PINCTRL_PIN(MX21_PAD_LD13),
 187         IMX_PINCTRL_PIN(MX21_PAD_LD14),
 188         IMX_PINCTRL_PIN(MX21_PAD_LD15),
 189         IMX_PINCTRL_PIN(MX21_PAD_LD16),
 190         IMX_PINCTRL_PIN(MX21_PAD_LD17),
 191         IMX_PINCTRL_PIN(MX21_PAD_REV),
 192         IMX_PINCTRL_PIN(MX21_PAD_CLS),
 193         IMX_PINCTRL_PIN(MX21_PAD_PS),
 194         IMX_PINCTRL_PIN(MX21_PAD_SPL_SPR),
 195         IMX_PINCTRL_PIN(MX21_PAD_HSYNC),
 196         IMX_PINCTRL_PIN(MX21_PAD_VSYNC),
 197         IMX_PINCTRL_PIN(MX21_PAD_CONTRAST),
 198         IMX_PINCTRL_PIN(MX21_PAD_OE_ACD),
 199         IMX_PINCTRL_PIN(MX21_PAD_SD2_D0),
 200         IMX_PINCTRL_PIN(MX21_PAD_SD2_D1),
 201         IMX_PINCTRL_PIN(MX21_PAD_SD2_D2),
 202         IMX_PINCTRL_PIN(MX21_PAD_SD2_D3),
 203         IMX_PINCTRL_PIN(MX21_PAD_SD2_CMD),
 204         IMX_PINCTRL_PIN(MX21_PAD_SD2_CLK),
 205         IMX_PINCTRL_PIN(MX21_PAD_CSI_D0),
 206         IMX_PINCTRL_PIN(MX21_PAD_CSI_D1),
 207         IMX_PINCTRL_PIN(MX21_PAD_CSI_D2),
 208         IMX_PINCTRL_PIN(MX21_PAD_CSI_D3),
 209         IMX_PINCTRL_PIN(MX21_PAD_CSI_D4),
 210         IMX_PINCTRL_PIN(MX21_PAD_CSI_MCLK),
 211         IMX_PINCTRL_PIN(MX21_PAD_CSI_PIXCLK),
 212         IMX_PINCTRL_PIN(MX21_PAD_CSI_D5),
 213         IMX_PINCTRL_PIN(MX21_PAD_CSI_D6),
 214         IMX_PINCTRL_PIN(MX21_PAD_CSI_D7),
 215         IMX_PINCTRL_PIN(MX21_PAD_CSI_VSYNC),
 216         IMX_PINCTRL_PIN(MX21_PAD_CSI_HSYNC),
 217         IMX_PINCTRL_PIN(MX21_PAD_USB_BYP),
 218         IMX_PINCTRL_PIN(MX21_PAD_USB_PWR),
 219         IMX_PINCTRL_PIN(MX21_PAD_USB_OC),
 220         IMX_PINCTRL_PIN(MX21_PAD_USBH_ON),
 221         IMX_PINCTRL_PIN(MX21_PAD_USBH1_FS),
 222         IMX_PINCTRL_PIN(MX21_PAD_USBH1_OE),
 223         IMX_PINCTRL_PIN(MX21_PAD_USBH1_TXDM),
 224         IMX_PINCTRL_PIN(MX21_PAD_USBH1_TXDP),
 225         IMX_PINCTRL_PIN(MX21_PAD_USBH1_RXDM),
 226         IMX_PINCTRL_PIN(MX21_PAD_USBH1_RXDP),
 227         IMX_PINCTRL_PIN(MX21_PAD_USBG_SDA),
 228         IMX_PINCTRL_PIN(MX21_PAD_USBG_SCL),
 229         IMX_PINCTRL_PIN(MX21_PAD_USBG_ON),
 230         IMX_PINCTRL_PIN(MX21_PAD_USBG_FS),
 231         IMX_PINCTRL_PIN(MX21_PAD_USBG_OE),
 232         IMX_PINCTRL_PIN(MX21_PAD_USBG_TXDM),
 233         IMX_PINCTRL_PIN(MX21_PAD_USBG_TXDP),
 234         IMX_PINCTRL_PIN(MX21_PAD_USBG_RXDM),
 235         IMX_PINCTRL_PIN(MX21_PAD_USBG_RXDP),
 236         IMX_PINCTRL_PIN(MX21_PAD_TOUT),
 237         IMX_PINCTRL_PIN(MX21_PAD_TIN),
 238         IMX_PINCTRL_PIN(MX21_PAD_SAP_FS),
 239         IMX_PINCTRL_PIN(MX21_PAD_SAP_RXD),
 240         IMX_PINCTRL_PIN(MX21_PAD_SAP_TXD),
 241         IMX_PINCTRL_PIN(MX21_PAD_SAP_CLK),
 242         IMX_PINCTRL_PIN(MX21_PAD_SSI1_FS),
 243         IMX_PINCTRL_PIN(MX21_PAD_SSI1_RXD),
 244         IMX_PINCTRL_PIN(MX21_PAD_SSI1_TXD),
 245         IMX_PINCTRL_PIN(MX21_PAD_SSI1_CLK),
 246         IMX_PINCTRL_PIN(MX21_PAD_SSI2_FS),
 247         IMX_PINCTRL_PIN(MX21_PAD_SSI2_RXD),
 248         IMX_PINCTRL_PIN(MX21_PAD_SSI2_TXD),
 249         IMX_PINCTRL_PIN(MX21_PAD_SSI2_CLK),
 250         IMX_PINCTRL_PIN(MX21_PAD_SSI3_FS),
 251         IMX_PINCTRL_PIN(MX21_PAD_SSI3_RXD),
 252         IMX_PINCTRL_PIN(MX21_PAD_SSI3_TXD),
 253         IMX_PINCTRL_PIN(MX21_PAD_SSI3_CLK),
 254         IMX_PINCTRL_PIN(MX21_PAD_I2C_DATA),
 255         IMX_PINCTRL_PIN(MX21_PAD_I2C_CLK),
 256         IMX_PINCTRL_PIN(MX21_PAD_CSPI2_SS2),
 257         IMX_PINCTRL_PIN(MX21_PAD_CSPI2_SS1),
 258         IMX_PINCTRL_PIN(MX21_PAD_CSPI2_SS0),
 259         IMX_PINCTRL_PIN(MX21_PAD_CSPI2_SCLK),
 260         IMX_PINCTRL_PIN(MX21_PAD_CSPI2_MISO),
 261         IMX_PINCTRL_PIN(MX21_PAD_CSPI2_MOSI),
 262         IMX_PINCTRL_PIN(MX21_PAD_CSPI1_RDY),
 263         IMX_PINCTRL_PIN(MX21_PAD_CSPI1_SS2),
 264         IMX_PINCTRL_PIN(MX21_PAD_CSPI1_SS1),
 265         IMX_PINCTRL_PIN(MX21_PAD_CSPI1_SS0),
 266         IMX_PINCTRL_PIN(MX21_PAD_CSPI1_SCLK),
 267         IMX_PINCTRL_PIN(MX21_PAD_CSPI1_MISO),
 268         IMX_PINCTRL_PIN(MX21_PAD_CSPI1_MOSI),
 269         IMX_PINCTRL_PIN(MX21_PAD_TEST_WB2),
 270         IMX_PINCTRL_PIN(MX21_PAD_TEST_WB1),
 271         IMX_PINCTRL_PIN(MX21_PAD_TEST_WB0),
 272         IMX_PINCTRL_PIN(MX21_PAD_UART2_CTS),
 273         IMX_PINCTRL_PIN(MX21_PAD_UART2_RTS),
 274         IMX_PINCTRL_PIN(MX21_PAD_PWMO),
 275         IMX_PINCTRL_PIN(MX21_PAD_UART2_TXD),
 276         IMX_PINCTRL_PIN(MX21_PAD_UART2_RXD),
 277         IMX_PINCTRL_PIN(MX21_PAD_UART3_TXD),
 278         IMX_PINCTRL_PIN(MX21_PAD_UART3_RXD),
 279         IMX_PINCTRL_PIN(MX21_PAD_UART3_CTS),
 280         IMX_PINCTRL_PIN(MX21_PAD_UART3_RTS),
 281         IMX_PINCTRL_PIN(MX21_PAD_UART1_TXD),
 282         IMX_PINCTRL_PIN(MX21_PAD_UART1_RXD),
 283         IMX_PINCTRL_PIN(MX21_PAD_UART1_CTS),
 284         IMX_PINCTRL_PIN(MX21_PAD_UART1_RTS),
 285         IMX_PINCTRL_PIN(MX21_PAD_RTCK),
 286         IMX_PINCTRL_PIN(MX21_PAD_RESET_OUT),
 287         IMX_PINCTRL_PIN(MX21_PAD_SD1_D0),
 288         IMX_PINCTRL_PIN(MX21_PAD_SD1_D1),
 289         IMX_PINCTRL_PIN(MX21_PAD_SD1_D2),
 290         IMX_PINCTRL_PIN(MX21_PAD_SD1_D3),
 291         IMX_PINCTRL_PIN(MX21_PAD_SD1_CMD),
 292         IMX_PINCTRL_PIN(MX21_PAD_SD1_CLK),
 293         IMX_PINCTRL_PIN(MX21_PAD_NFRB),
 294         IMX_PINCTRL_PIN(MX21_PAD_NFCE),
 295         IMX_PINCTRL_PIN(MX21_PAD_NFWP),
 296         IMX_PINCTRL_PIN(MX21_PAD_NFCLE),
 297         IMX_PINCTRL_PIN(MX21_PAD_NFALE),
 298         IMX_PINCTRL_PIN(MX21_PAD_NFRE),
 299         IMX_PINCTRL_PIN(MX21_PAD_NFWE),
 300         IMX_PINCTRL_PIN(MX21_PAD_NFIO0),
 301         IMX_PINCTRL_PIN(MX21_PAD_NFIO1),
 302         IMX_PINCTRL_PIN(MX21_PAD_NFIO2),
 303         IMX_PINCTRL_PIN(MX21_PAD_NFIO3),
 304         IMX_PINCTRL_PIN(MX21_PAD_NFIO4),
 305         IMX_PINCTRL_PIN(MX21_PAD_NFIO5),
 306         IMX_PINCTRL_PIN(MX21_PAD_NFIO6),
 307         IMX_PINCTRL_PIN(MX21_PAD_NFIO7),
 308         IMX_PINCTRL_PIN(MX21_PAD_CLKO),
 309         IMX_PINCTRL_PIN(MX21_PAD_RESERVED),
 310         IMX_PINCTRL_PIN(MX21_PAD_CS4),
 311         IMX_PINCTRL_PIN(MX21_PAD_CS5),
 312 };
 313
 314 static struct imx1_pinctrl_soc_info imx21_pinctrl_info = {
 315         .pins   = imx21_pinctrl_pads,
 316         .npins  = ARRAY_SIZE(imx21_pinctrl_pads),
 317 };
 318
 319 static int __init imx21_pinctrl_probe(struct platform_device *pdev)
 320 {
 321         return imx1_pinctrl_core_probe(pdev, &imx21_pinctrl_info);
 322 }
 323
 324 static const struct of_device_id imx21_pinctrl_of_match[] = {
 325         { .compatible = "fsl,imx21-iomuxc", },
 326         { }
 327 };
 328
 329 static struct platform_driver imx21_pinctrl_driver = {
 330         .driver = {
 331                 .name           = "imx21-pinctrl",
 332                 .of_match_table = imx21_pinctrl_of_match,
 333         },
 334 };
 335 builtin_platform_driver_probe(imx21_pinctrl_driver, imx21_pinctrl_probe);