release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/plat-samsung/include/plat/sdhci.h

   1 /* linux/arch/arm/plat-s3c/include/plat/sdhci.h
   2  *
   3  * Copyright 2008 Openmoko, Inc.
   4  * Copyright 2008 Simtec Electronics
   5  *      http://armlinux.simtec.co.uk/
   6  *      Ben Dooks <ben@simtec.co.uk>
   7  *
   8  * S3C Platform - SDHCI (HSMMC) platform data definitions
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13 */
  14
  15 #ifndef __PLAT_S3C_SDHCI_H
  16 #define __PLAT_S3C_SDHCI_H __FILE__
  17
  18 struct platform_device;
  19 struct mmc_host;
  20 struct mmc_card;
  21 struct mmc_ios;
  22
  23 enum cd_types {
  24         S3C_SDHCI_CD_INTERNAL,  /* use mmc internal CD line */
  25         S3C_SDHCI_CD_EXTERNAL,  /* use external callback */
  26         S3C_SDHCI_CD_GPIO,      /* use external gpio pin for CD line */
  27         S3C_SDHCI_CD_NONE,      /* no CD line, use polling to detect card */
  28         S3C_SDHCI_CD_PERMANENT, /* no CD line, card permanently wired to host */
  29 };
  30
  31 /**
  32  * struct s3c_sdhci_platdata() - Platform device data for Samsung SDHCI
  33  * @max_width: The maximum number of data bits supported.
  34  * @host_caps: Standard MMC host capabilities bit field.
  35  * @cd_type: Type of Card Detection method (see cd_types enum above)
  36  * @ext_cd_init: Initialize external card detect subsystem. Called on
  37  *               sdhci-s3c driver probe when cd_type == S3C_SDHCI_CD_EXTERNAL.
  38  *               notify_func argument is a callback to the sdhci-s3c driver
  39  *               that triggers the card detection event. Callback arguments:
  40  *               dev is pointer to platform device of the host controller,
  41  *               state is new state of the card (0 - removed, 1 - inserted).
  42  * @ext_cd_cleanup: Cleanup external card detect subsystem. Called on
  43  *               sdhci-s3c driver remove when cd_type == S3C_SDHCI_CD_EXTERNAL.
  44  *               notify_func argument is the same callback as for ext_cd_init.
  45  * @ext_cd_gpio: gpio pin used for external CD line, valid only if
  46  *               cd_type == S3C_SDHCI_CD_GPIO
  47  * @ext_cd_gpio_invert: invert values for external CD gpio line
  48  * @cfg_gpio: Configure the GPIO for a specific card bit-width
  49  * @cfg_card: Configure the interface for a specific card and speed. This
  50  *            is necessary the controllers and/or GPIO blocks require the
  51  *            changing of driver-strength and other controls dependant on
  52  *            the card and speed of operation.
  53  *
  54  * Initialisation data specific to either the machine or the platform
  55  * for the device driver to use or call-back when configuring gpio or
  56  * card speed information.
  57 */
  58 struct s3c_sdhci_platdata {
  59         unsigned int    max_width;
  60         unsigned int    host_caps;
  61         enum cd_types   cd_type;
  62
  63         char            **clocks;       /* set of clock sources */
  64
  65         int             ext_cd_gpio;
  66         bool            ext_cd_gpio_invert;
  67         int     (*ext_cd_init)(void (*notify_func)(struct platform_device *,
  68                                                    int state));
  69         int     (*ext_cd_cleanup)(void (*notify_func)(struct platform_device *,
  70                                                       int state));
  71
  72         void    (*cfg_gpio)(struct platform_device *dev, int width);
  73         void    (*cfg_card)(struct platform_device *dev,
  74                             void __iomem *regbase,
  75                             struct mmc_ios *ios,
  76                             struct mmc_card *card);
  77 };
  78
  79 /**
  80  * s3c_sdhci0_set_platdata - Set platform data for S3C SDHCI device.
  81  * @pd: Platform data to register to device.
  82  *
  83  * Register the given platform data for use withe S3C SDHCI device.
  84  * The call will copy the platform data, so the board definitions can
  85  * make the structure itself __initdata.
  86  */
  87 extern void s3c_sdhci0_set_platdata(struct s3c_sdhci_platdata *pd);
  88 extern void s3c_sdhci1_set_platdata(struct s3c_sdhci_platdata *pd);
  89 extern void s3c_sdhci2_set_platdata(struct s3c_sdhci_platdata *pd);
  90 extern void s3c_sdhci3_set_platdata(struct s3c_sdhci_platdata *pd);
  91
  92 /* Default platform data, exported so that per-cpu initialisation can
  93  * set the correct one when there are more than one cpu type selected.
  94 */
  95
  96 extern struct s3c_sdhci_platdata s3c_hsmmc0_def_platdata;
  97 extern struct s3c_sdhci_platdata s3c_hsmmc1_def_platdata;
  98 extern struct s3c_sdhci_platdata s3c_hsmmc2_def_platdata;
  99 extern struct s3c_sdhci_platdata s3c_hsmmc3_def_platdata;
 100
 101 /* Helper function availablity */
 102
 103 extern void s3c64xx_setup_sdhci0_cfg_gpio(struct platform_device *, int w);
 104 extern void s3c64xx_setup_sdhci1_cfg_gpio(struct platform_device *, int w);
 105 extern void s5pc100_setup_sdhci0_cfg_gpio(struct platform_device *, int w);
 106 extern void s5pc100_setup_sdhci1_cfg_gpio(struct platform_device *, int w);
 107 extern void s5pc100_setup_sdhci2_cfg_gpio(struct platform_device *, int w);
 108 extern void s3c64xx_setup_sdhci2_cfg_gpio(struct platform_device *, int w);
 109 extern void s5pv210_setup_sdhci0_cfg_gpio(struct platform_device *, int w);
 110 extern void s5pv210_setup_sdhci1_cfg_gpio(struct platform_device *, int w);
 111 extern void s5pv210_setup_sdhci2_cfg_gpio(struct platform_device *, int w);
 112 extern void s5pv210_setup_sdhci3_cfg_gpio(struct platform_device *, int w);
 113
 114 /* S3C64XX SDHCI setup */
 115
 116 #ifdef CONFIG_S3C64XX_SETUP_SDHCI
 117 extern char *s3c64xx_hsmmc_clksrcs[4];
 118
 119 extern void s3c6400_setup_sdhci_cfg_card(struct platform_device *dev,
 120                                          void __iomem *r,
 121                                          struct mmc_ios *ios,
 122                                          struct mmc_card *card);
 123
 124 static inline void s3c6400_default_sdhci0(void)
 125 {
 126 #ifdef CONFIG_S3C_DEV_HSMMC
 127         s3c_hsmmc0_def_platdata.clocks = s3c64xx_hsmmc_clksrcs;
 128         s3c_hsmmc0_def_platdata.cfg_gpio = s3c64xx_setup_sdhci0_cfg_gpio;
 129         s3c_hsmmc0_def_platdata.cfg_card = s3c6400_setup_sdhci_cfg_card;
 130 #endif
 131 }
 132
 133 static inline void s3c6400_default_sdhci1(void)
 134 {
 135 #ifdef CONFIG_S3C_DEV_HSMMC1
 136         s3c_hsmmc1_def_platdata.clocks = s3c64xx_hsmmc_clksrcs;
 137         s3c_hsmmc1_def_platdata.cfg_gpio = s3c64xx_setup_sdhci1_cfg_gpio;
 138         s3c_hsmmc1_def_platdata.cfg_card = s3c6400_setup_sdhci_cfg_card;
 139 #endif
 140 }
 141
 142 static inline void s3c6400_default_sdhci2(void)
 143 {
 144 #ifdef CONFIG_S3C_DEV_HSMMC2
 145         s3c_hsmmc2_def_platdata.clocks = s3c64xx_hsmmc_clksrcs;
 146         s3c_hsmmc2_def_platdata.cfg_gpio = s3c64xx_setup_sdhci2_cfg_gpio;
 147         s3c_hsmmc2_def_platdata.cfg_card = s3c6400_setup_sdhci_cfg_card;
 148 #endif
 149 }
 150
 151 extern void s3c6410_setup_sdhci_cfg_card(struct platform_device *dev,
 152                                          void __iomem *r,
 153                                          struct mmc_ios *ios,
 154                                          struct mmc_card *card);
 155
 156 static inline void s3c6410_default_sdhci0(void)
 157 {
 158 #ifdef CONFIG_S3C_DEV_HSMMC
 159         s3c_hsmmc0_def_platdata.clocks = s3c64xx_hsmmc_clksrcs;
 160         s3c_hsmmc0_def_platdata.cfg_gpio = s3c64xx_setup_sdhci0_cfg_gpio;
 161         s3c_hsmmc0_def_platdata.cfg_card = s3c6410_setup_sdhci_cfg_card;
 162 #endif
 163 }
 164
 165 static inline void s3c6410_default_sdhci1(void)
 166 {
 167 #ifdef CONFIG_S3C_DEV_HSMMC1
 168         s3c_hsmmc1_def_platdata.clocks = s3c64xx_hsmmc_clksrcs;
 169         s3c_hsmmc1_def_platdata.cfg_gpio = s3c64xx_setup_sdhci1_cfg_gpio;
 170         s3c_hsmmc1_def_platdata.cfg_card = s3c6410_setup_sdhci_cfg_card;
 171 #endif
 172 }
 173
 174 static inline void s3c6410_default_sdhci2(void)
 175 {
 176 #ifdef CONFIG_S3C_DEV_HSMMC2
 177         s3c_hsmmc2_def_platdata.clocks = s3c64xx_hsmmc_clksrcs;
 178         s3c_hsmmc2_def_platdata.cfg_gpio = s3c64xx_setup_sdhci2_cfg_gpio;
 179         s3c_hsmmc2_def_platdata.cfg_card = s3c6410_setup_sdhci_cfg_card;
 180 #endif
 181 }
 182
 183 #else
 184 static inline void s3c6410_default_sdhci0(void) { }
 185 static inline void s3c6410_default_sdhci1(void) { }
 186 static inline void s3c6410_default_sdhci2(void) { }
 187 static inline void s3c6400_default_sdhci0(void) { }
 188 static inline void s3c6400_default_sdhci1(void) { }
 189 static inline void s3c6400_default_sdhci2(void) { }
 190
 191 #endif /* CONFIG_S3C64XX_SETUP_SDHCI */
 192
 193 /* S5PC100 SDHCI setup */
 194
 195 #ifdef CONFIG_S5PC100_SETUP_SDHCI
 196 extern char *s5pc100_hsmmc_clksrcs[4];
 197
 198 extern void s5pc100_setup_sdhci0_cfg_card(struct platform_device *dev,
 199                                            void __iomem *r,
 200                                            struct mmc_ios *ios,
 201                                            struct mmc_card *card);
 202
 203 static inline void s5pc100_default_sdhci0(void)
 204 {
 205 #ifdef CONFIG_S3C_DEV_HSMMC
 206         s3c_hsmmc0_def_platdata.clocks = s5pc100_hsmmc_clksrcs;
 207         s3c_hsmmc0_def_platdata.cfg_gpio = s5pc100_setup_sdhci0_cfg_gpio;
 208         s3c_hsmmc0_def_platdata.cfg_card = s5pc100_setup_sdhci0_cfg_card;
 209 #endif
 210 }
 211
 212 static inline void s5pc100_default_sdhci1(void)
 213 {
 214 #ifdef CONFIG_S3C_DEV_HSMMC1
 215         s3c_hsmmc1_def_platdata.clocks = s5pc100_hsmmc_clksrcs;
 216         s3c_hsmmc1_def_platdata.cfg_gpio = s5pc100_setup_sdhci1_cfg_gpio;
 217         s3c_hsmmc1_def_platdata.cfg_card = s5pc100_setup_sdhci0_cfg_card;
 218 #endif
 219 }
 220
 221 static inline void s5pc100_default_sdhci2(void)
 222 {
 223 #ifdef CONFIG_S3C_DEV_HSMMC2
 224         s3c_hsmmc2_def_platdata.clocks = s5pc100_hsmmc_clksrcs;
 225         s3c_hsmmc2_def_platdata.cfg_gpio = s5pc100_setup_sdhci2_cfg_gpio;
 226         s3c_hsmmc2_def_platdata.cfg_card = s5pc100_setup_sdhci0_cfg_card;
 227 #endif
 228 }
 229
 230 #else
 231 static inline void s5pc100_default_sdhci0(void) { }
 232 static inline void s5pc100_default_sdhci1(void) { }
 233 static inline void s5pc100_default_sdhci2(void) { }
 234
 235 #endif /* CONFIG_S5PC100_SETUP_SDHCI */
 236
 237 /* S5PV210 SDHCI setup */
 238
 239 #ifdef CONFIG_S5PV210_SETUP_SDHCI
 240 extern char *s5pv210_hsmmc_clksrcs[4];
 241
 242 extern void s5pv210_setup_sdhci_cfg_card(struct platform_device *dev,
 243                                            void __iomem *r,
 244                                            struct mmc_ios *ios,
 245                                            struct mmc_card *card);
 246
 247 static inline void s5pv210_default_sdhci0(void)
 248 {
 249 #ifdef CONFIG_S3C_DEV_HSMMC
 250         s3c_hsmmc0_def_platdata.clocks = s5pv210_hsmmc_clksrcs;
 251         s3c_hsmmc0_def_platdata.cfg_gpio = s5pv210_setup_sdhci0_cfg_gpio;
 252         s3c_hsmmc0_def_platdata.cfg_card = s5pv210_setup_sdhci_cfg_card;
 253 #endif
 254 }
 255
 256 static inline void s5pv210_default_sdhci1(void)
 257 {
 258 #ifdef CONFIG_S3C_DEV_HSMMC1
 259         s3c_hsmmc1_def_platdata.clocks = s5pv210_hsmmc_clksrcs;
 260         s3c_hsmmc1_def_platdata.cfg_gpio = s5pv210_setup_sdhci1_cfg_gpio;
 261         s3c_hsmmc1_def_platdata.cfg_card = s5pv210_setup_sdhci_cfg_card;
 262 #endif
 263 }
 264
 265 static inline void s5pv210_default_sdhci2(void)
 266 {
 267 #ifdef CONFIG_S3C_DEV_HSMMC2
 268         s3c_hsmmc2_def_platdata.clocks = s5pv210_hsmmc_clksrcs;
 269         s3c_hsmmc2_def_platdata.cfg_gpio = s5pv210_setup_sdhci2_cfg_gpio;
 270         s3c_hsmmc2_def_platdata.cfg_card = s5pv210_setup_sdhci_cfg_card;
 271 #endif
 272 }
 273
 274 static inline void s5pv210_default_sdhci3(void)
 275 {
 276 #ifdef CONFIG_S3C_DEV_HSMMC3
 277         s3c_hsmmc3_def_platdata.clocks = s5pv210_hsmmc_clksrcs;
 278         s3c_hsmmc3_def_platdata.cfg_gpio = s5pv210_setup_sdhci3_cfg_gpio;
 279         s3c_hsmmc3_def_platdata.cfg_card = s5pv210_setup_sdhci_cfg_card;
 280 #endif
 281 }
 282
 283 #else
 284 static inline void s5pv210_default_sdhci0(void) { }
 285 static inline void s5pv210_default_sdhci1(void) { }
 286 static inline void s5pv210_default_sdhci2(void) { }
 287 static inline void s5pv210_default_sdhci3(void) { }
 288
 289 #endif /* CONFIG_S5PV210_SETUP_SDHCI */
 290
 291 #endif /* __PLAT_S3C_SDHCI_H */