drivers/mmc/omap_mmc.h

   1 struct omap_mmchs_registers;
   2
   3 struct omap_mmchs {
   4         vir_bytes io_base;
   5         vir_bytes io_size;
   6         phys_bytes hw_base;/* HW address */
   7         int irq_nr;
   8         struct omap_mmchs_registers * regs;
   9 };
  10
  11 struct omap_mmchs_registers {
  12         /* SD system configuration */
  13         vir_bytes SYSCONFIG;
  14         /* SD system status */
  15         vir_bytes SYSSTATUS;
  16         /* Configuration (functional mode,card initialization etc) */
  17         vir_bytes CON;
  18         /* Transfer length configuration */
  19         vir_bytes BLK;
  20         /* Command argument bit 38-8 of command format*/
  21         vir_bytes ARG;
  22         /* Command and transfer mode */
  23         vir_bytes CMD;
  24         /* SDMA System address */
  25         vir_bytes SDMASA;
  26         /* Command response 0 and 1 */
  27         vir_bytes RSP10;
  28         /* Command response 2 and 3  */
  29         vir_bytes RSP32;
  30         /* Command response 4 and 5  */
  31         vir_bytes RSP54;
  32         /* Command response 6 and 7  */
  33         vir_bytes RSP76;
  34         /* Data register */
  35         vir_bytes DATA;
  36         /* Present state */
  37         vir_bytes PSTATE;
  38         /* Host control(power ,wake-up and transfer) */
  39         vir_bytes HCTL;
  40         /* SD System control (reset,clocks and timeout) */
  41         vir_bytes SYSCTL;
  42         /* SD Interrupt status */
  43         vir_bytes SD_STAT;
  44         /* SD Interrupt Enable register */
  45         vir_bytes IE;
  46         /* SD Interrupt Signal Enable register */
  47         vir_bytes ISE;
  48         /* Capabilities of the host controller */
  49         vir_bytes CAPA;
  50         /* Current capabilities of the host controller */
  51         vir_bytes CUR_CAPA;
  52 };
  53
  54 /* version used on the AM335x */
  55 static struct omap_mmchs_registers regs_v1 = {
  56         .SYSCONFIG = 0x110,
  57         .SYSSTATUS = 0x114,
  58         .CON = 0x12c,
  59         .BLK = 0x204,
  60         .ARG = 0x208,
  61         .CMD = 0x20c,
  62         .SDMASA = 0x200,
  63         .RSP10 = 0x210,
  64         .RSP32 = 0x214,
  65         .RSP54 = 0x218,
  66         .RSP76 = 0x21c,
  67         .DATA = 0x220,
  68         .PSTATE = 0x224,
  69         .HCTL = 0x228,
  70         .SYSCTL = 0x22c,
  71         .SD_STAT = 0x230,
  72         .IE = 0x234,
  73         .ISE = 0x238,
  74         .CAPA = 0x240,
  75         .CUR_CAPA = 0x248,
  76 };
  77
  78 /* version used on the DM37xx */
  79 /* DM and AM have the same register but shifted by 0x100. */
  80 static struct omap_mmchs_registers regs_v0 = {
  81         .SYSCONFIG = 0x010,
  82         .SYSSTATUS = 0x014,
  83         .CON = 0x02c,
  84         .BLK = 0x104,
  85         .ARG = 0x108,
  86         .CMD = 0x10c,
  87         .SDMASA = 0x100,
  88         .RSP10 = 0x110,
  89         .RSP32 = 0x114,
  90         .RSP54 = 0x118,
  91         .RSP76 = 0x11c,
  92         .DATA = 0x120,
  93         .PSTATE = 0x124,
  94         .HCTL = 0x128,
  95         .SYSCTL = 0x12c,
  96         .SD_STAT = 0x130,
  97         .IE = 0x134,
  98         .ISE = 0x138,
  99         .CAPA = 0x140,
 100         .CUR_CAPA = 0x148,
 101 };
 102
 103
 104 #define MMCHS_SD_SYSCONFIG_AUTOIDLE                    (0x1 << 0)  /* Internal clock gating strategy */
 105 #define MMCHS_SD_SYSCONFIG_AUTOIDLE_DIS                (0x0 << 0)  /* Clocks are free running */
 106 #define MMCHS_SD_SYSCONFIG_AUTOIDLE_EN                 (0x1 << 0)  /* Automatic clock gating strategy */
 107 #define MMCHS_SD_SYSCONFIG_SOFTRESET                   (0x1 << 1)  /* Software reset bit writing  */
 108 #define MMCHS_SD_SYSCONFIG_ENAWAKEUP                   (0x1 << 2)  /* Wake-up feature control */
 109 #define MMCHS_SD_SYSCONFIG_ENAWAKEUP_DIS               (0x0 << 2)  /* Disable wake-up capability */
 110 #define MMCHS_SD_SYSCONFIG_ENAWAKEUP_EN                (0x1 << 2)  /* Enable wake-up capability */
 111 #define MMCHS_SD_SYSCONFIG_SIDLEMODE                   (0x3 << 3)  /* Power management */
 112 #define MMCHS_SD_SYSCONFIG_SIDLEMODE_UNCONDITIONAL     (0x0 << 3)  /* Go into idle mode unconditionally upon request */
 113 #define MMCHS_SD_SYSCONFIG_SIDLEMODE_IGNORE            (0x1 << 3)  /* Ignore ILDE requests */
 114 #define MMCHS_SD_SYSCONFIG_SIDLEMODE_IDLE              (0x2 << 3)  /* Acknowledge IDLE request switch to wake-up mode */
 115 #define MMCHS_SD_SYSCONFIG_SIDLEMODE_SMART_IDLE        (0x3 << 3)  /* Smart-idle */
 116 #define MMCHS_SD_SYSCONFIG_CLOCKACTIVITY               (0x3 << 8)  /* Clock activity during wake-up */
 117 #define MMCHS_SD_SYSCONFIG_CLOCKACTIVITY_OFF           (0x0 << 8)  /* Interface and functional clock can be switched off */
 118 #define MMCHS_SD_SYSCONFIG_CLOCKACTIVITY_IF            (0x1 << 8)  /* Only Interface clock (functional can be switched off*/
 119 #define MMCHS_SD_SYSCONFIG_CLOCKACTIVITY_FUNC          (0x2 << 8)  /* Only Functional clock (interface clock can be switched off) */
 120 #define MMCHS_SD_SYSCONFIG_CLOCKACTIVITY_BOOTH         (0x3 << 8)  /* Booth the interface and functional clock are maintained */
 121 #define MMCHS_SD_SYSCONFIG_STANDBYMODE                 (0x3 << 12) /* Configuration for standby */
 122 #define MMCHS_SD_SYSCONFIG_STANDBYMODE_FORCE_STANDBY   (0x0 << 12) /* Force standby mode upon idle request*/
 123 #define MMCHS_SD_SYSCONFIG_STANDBYMODE_NO_STANDBY      (0x1 << 12) /* Never go into standby mode */
 124 #define MMCHS_SD_SYSCONFIG_STANDBYMODE_WAKEUP_INTERNAL (0x2 << 12) /* Go into wake-up mode based on internal knowledge */
 125 #define MMCHS_SD_SYSCONFIG_STANDBYMODE_WAKEUP_SMART    (0x3 << 12) /* Go info wake-up mode when possible */
 126
 127 #define MMCHS_SD_SYSSTATUS_RESETDONE 0x01
 128
 129 #define MMCHS_SD_CON_DW8          (0x1 << 5) /* 8-bit mode MMC select , For SD clear this bit */
 130 #define MMCHS_SD_CON_DW8_1BIT     (0x0 << 5) /* 1 or 4 bits data width configuration(also set SD_HCTL) */
 131 #define MMCHS_SD_CON_DW8_8BITS    (0x1 << 5) /* 8 bits data width configuration */
 132 #define MMCHS_SD_CON_INIT         (0x1 << 1) /* Send initialization stream (all cards) */
 133 #define MMCHS_SD_CON_INIT_NOINIT  (0x0 << 1) /* Do nothing */
 134 #define MMCHS_SD_CON_INIT_INIT    (0x1 << 1) /* Send initialization stream */
 135
 136 #define MMCHS_SD_BLK_NBLK             (0xffffu << 16) /* Block count for the current transfer */
 137 #define MMCHS_SD_BLK_BLEN             (0xfff << 0)     /* Transfer block size */
 138 #define MMCHS_SD_BLK_BLEN_NOTRANSFER  (0x0 << 0)       /* No transfer */
 139
 140 #define MMCHS_SD_CMD_INDX                 (0x3f << 24) /* Command index */
 141 #define MMCHS_SD_CMD_INDX_CMD(x)          (x << 24)    /* MMC command index binary encoded values from 0 to 63 */
 142
 143 #define MMCHS_SD_ARG_MASK                 (0xffffffffu)      /* Mask everything */
 144 #define MMCHS_SD_ARG_CMD8_VHS             (0x1 << (16 - 8))  /* Voltage between 2.7 and 3.6 v*/
 145 #define MMCHS_SD_ARG_CMD8_CHECK_PATTERN   (0xaa <<(8 - 8))   /* 10101010b pattern */
 146
 147 #define MMCHS_SD_CMD_TYPE                 (0x3 << 22) /* Command type. */
 148 #define MMCHS_SD_CMD_TYPE_OTHER           (0x0 << 22) /* Other type of commands (like go idle) */
 149 #define MMCHS_SD_CMD_TYPE_BUS_SUSPEND     (0x1 << 22) /* Upon CMD52 "Bus Suspend" operation */
 150 #define MMCHS_SD_CMD_TYPE_FUNCTION_SELECT (0x2 << 22) /* Upon CMD52 "Function Select" operation */
 151 #define MMCHS_SD_CMD_TYPE_IOABORT         (0x3 << 22) /* Upon CMD12 and CMD21 "I/O Abort */
 152 #define MMCHS_SD_CMD_DP                   (0x1 << 21) /* Data present select */
 153 #define MMCHS_SD_CMD_DP_DATA              (0x1 << 21) /* Additional data is present on the data lines */
 154 #define MMCHS_SD_CMD_DP_NODATA            (0x0 << 21) /* No additional data is present on the data lines */
 155 #define MMCHS_SD_CMD_CICE                 (0x1 << 20) /* Command index response check enable */
 156 #define MMCHS_SD_CMD_CICE_ENABLE          (0x1 << 20) /* Enable index check response  */
 157 #define MMCHS_SD_CMD_CICE_DISABLE         (0x0 << 20) /* Disable index check response */
 158 #define MMCHS_SD_CMD_CCCE                 (0x1 << 19) /* Command CRC7 Check enable on responses*/
 159 #define MMCHS_SD_CMD_CCCE_ENABLE          (0x1 << 19) /* Enable CRC7 Check on response */
 160 #define MMCHS_SD_CMD_CCCE_DISABLE         (0x0 << 19) /* Disable CRC7 Check on response */
 161 #define MMCHS_SD_CMD_RSP_TYPE             (0x3 << 16) /* Response type */
 162 #define MMCHS_SD_CMD_RSP_TYPE_NO_RESP     (0x0 << 16) /* No response */
 163 #define MMCHS_SD_CMD_RSP_TYPE_136B        (0x1 << 16) /* Response length 136 bits */
 164 #define MMCHS_SD_CMD_RSP_TYPE_48B         (0x2 << 16) /* Response length 48 bits */
 165 #define MMCHS_SD_CMD_RSP_TYPE_48B_BUSY    (0x3 << 16) /* Response length 48 bits with busy after response */
 166 #define MMCHS_SD_CMD_MSBS                 (0x1 << 5)  /* Multi/Single block select */
 167 #define MMCHS_SD_CMD_MSBS_SINGLE          (0x0 << 5)  /* Single block mode */
 168 #define MMCHS_SD_CMD_MSBS_MULTI           (0x0 << 5)  /* Multi block mode */
 169 #define MMCHS_SD_CMD_DDIR                 (0x1 << 4)  /* Data transfer direction */
 170 #define MMCHS_SD_CMD_DDIR_READ            (0x1 << 4)  /* Data read (card to host) */
 171 #define MMCHS_SD_CMD_DDIR_WRITE           (0x0 << 4)  /* Data write (host to card)  */
 172 #define MMCHS_SD_CMD_ACEN                 (0x1 << 2)  /* Auto CMD12 Enable */
 173 #define MMCHS_SD_CMD_ACEN_DIS             (0x0 << 2)  /* Auto CMD12 Disable */
 174 #define MMCHS_SD_CMD_ACEN_EN              (0x1 << 2)  /* Auto CMD12 Enable */
 175 #define MMCHS_SD_CMD_BCE                  (0x1 << 1)  /* Block Count Enable(for multi block transfer) */
 176 #define MMCHS_SD_CMD_BCE_DIS              (0x0 << 1)  /* Disabled block count for infinite transfer*/
 177 #define MMCHS_SD_CMD_BCE_EN               (0x1 << 1)  /* Enabled for multi block transfer with know amount of blocks */
 178 #define MMCHS_SD_CMD_DE                   (0x1 << 0)  /* DMA enable */
 179 #define MMCHS_SD_CMD_DE_DIS               (0x0 << 0)  /* Disable DMA */
 180 #define MMCHS_SD_CMD_DE_EN                (0x1 << 0)  /* Enable DMA  */
 181 #define MMCHS_SD_CMD_MASK                                  ~(0x1 << 30  | 0x1 << 31 | 0x1 << 18 | 0x1 <<3) /* bits 30 , 31 and 18 are reserved */
 182
 183 #define MMCHS_SD_PSTATE_CI           (0x1 << 16) /* Card Inserted */
 184 #define MMCHS_SD_PSTATE_CI_INSERTED  (0x1 << 16) /* Card Inserted  is inserted*/
 185 #define MMCHS_SD_PSTATE_BRE          (0x0 << 11) /* Buffer read enable */
 186 #define MMCHS_SD_PSTATE_BRE_DIS      (0x0 << 11) /* Read BLEN bytes disabled*/
 187 #define MMCHS_SD_PSTATE_BRE_EN       (0x1 << 11) /* Read BLEN bytes enabled*/
 188 #define MMCHS_SD_PSTATE_BWE          (0x0 << 10) /* Buffer Write enable */
 189 #define MMCHS_SD_PSTATE_BWE_DIS      (0x0 << 10) /* There is no room left in the buffer to write BLEN bytes of data */
 190 #define MMCHS_SD_PSTATE_BWE_EN       (0x1 << 10) /* There is enough space in the buffer to write BLEN bytes of data*/
 191
 192 #define MMCHS_SD_HCTL_DTW            (0x1 << 1) /*Data transfer width.(must be set after a successful ACMD6) */
 193 #define MMCHS_SD_HCTL_DTW_1BIT       (0x0 << 1) /*1 bit transfer with */
 194 #define MMCHS_SD_HCTL_DTW_4BIT       (0x1 << 1) /*4 bit transfer with */
 195 #define MMCHS_SD_HCTL_SDBP           (0x1 << 8) /*SD bus power */
 196 #define MMCHS_SD_HCTL_SDBP_OFF       (0x0 << 8) /*SD Power off (start card detect?) */
 197 #define MMCHS_SD_HCTL_SDBP_ON        (0x1 << 8) /*SD Power on (start card detect?) */
 198 #define MMCHS_SD_HCTL_SDVS           (0x7 << 9) /*SD bus voltage select */
 199 #define MMCHS_SD_HCTL_SDVS_VS18      (0x5 << 9) /*1.8 V */
 200 #define MMCHS_SD_HCTL_SDVS_VS30      (0x6 << 9) /*3.0 V */
 201 #define MMCHS_SD_HCTL_SDVS_VS33      (0x7 << 9) /*3.3 V */
 202 #define MMCHS_SD_HCTL_IWE            (0x1 << 24)/* wake-up event on SD interrupt */
 203 #define MMCHS_SD_HCTL_IWE_DIS        (0x0 << 24)/* Disable wake-up on SD interrupt */
 204 #define MMCHS_SD_HCTL_IWE_EN         (0x1 << 24)/* Enable wake-up on SD interrupt */
 205
 206 #define MMCHS_SD_SYSCTL_CLKD (0x3ff << 6)  /* 10 bits clock frequency select */
 207 #define MMCHS_SD_SYSCTL_SRD  (0x1   << 26)  /* Soft reset for mmc_dat line */
 208 #define MMCHS_SD_SYSCTL_SRC  (0x1   << 25)  /* Soft reset for mmc_cmd line */
 209 #define MMCHS_SD_SYSCTL_SRA  (0x1   << 24)  /* Soft reset all (host controller) */
 210
 211 #define MMCHS_SD_SYSCTL_ICE     (0x1 << 0) /* Internal clock enable register  */
 212 #define MMCHS_SD_SYSCTL_ICE_DIS (0x0 << 0) /* Disable internal clock */
 213 #define MMCHS_SD_SYSCTL_ICE_EN  (0x1 << 0) /* Enable internal clock */
 214 #define MMCHS_SD_SYSCTL_ICS          (0x1 << 1) /* Internal clock stable register  */
 215 #define MMCHS_SD_SYSCTL_ICS_UNSTABLE (0x0 << 1) /* Internal clock is unstable */
 216 #define MMCHS_SD_SYSCTL_ICS_STABLE   (0x1 << 1) /* Internal clock is stable   */
 217 #define MMCHS_SD_SYSCTL_CEN          (0x1 << 2) /* Card lock enable provide clock to the card */
 218 #define MMCHS_SD_SYSCTL_CEN_DIS      (0x0 << 2) /* Internal clock is unstable */
 219 #define MMCHS_SD_SYSCTL_CEN_EN       (0x1 << 2) /* Internal clock is stable   */
 220
 221 #define MMCHS_SD_SYSCTL_DTO          (0xf << 16) /* Data timeout counter  */
 222 #define MMCHS_SD_SYSCTL_DTO_2POW13   (0x0 << 16) /* TCF x 2^13  */
 223 #define MMCHS_SD_SYSCTL_DTO_2POW14   (0x1 << 16) /* TCF x 2^14  */
 224 #define MMCHS_SD_SYSCTL_DTO_2POW27   (0xe << 16) /* TCF x 2^27  */
 225
 226 #define MMCHS_SD_STAT_ERRI            (0x01 << 15) /* Error interrupt */
 227 #define MMCHS_SD_STAT_ERROR_MASK     (0xff << 15 | 0x3 << 24 | 0x03 << 28)
 228 #define MMCHS_SD_STAT_CC              (0x1 << 0) /* Command complete status */
 229 #define MMCHS_SD_STAT_CC_UNRAISED     (0x0 << 0) /* Command not completed */
 230 #define MMCHS_SD_STAT_CC_RAISED       (0x1 << 0) /* Command completed */
 231 #define MMCHS_SD_STAT_TC              (0x1 << 1) /* Transfer complete status */
 232 #define MMCHS_SD_STAT_TC_UNRAISED     (0x0 << 1) /* Transfer not completed */
 233 #define MMCHS_SD_STAT_TC_RAISED       (0x1 << 1) /* Transfer completed */
 234
 235 #define MMCHS_SD_IE_ERROR_MASK     (0xff << 15 | 0x3 << 24 | 0x03 << 28)
 236
 237 #define MMCHS_SD_IE_CC_ENABLE        (0x1 << 0) /* Command complete interrupt enable */
 238 #define MMCHS_SD_IE_CC_ENABLE_ENABLE (0x1 << 0) /* Command complete Interrupts are enabled */
 239 #define MMCHS_SD_IE_CC_ENABLE_CLEAR  (0x1 << 0) /* Clearing is done by writing a 0x1 */
 240
 241 #define MMCHS_SD_IE_TC_ENABLE        (0x1 << 1) /* Transfer complete interrupt enable */
 242 #define MMCHS_SD_IE_TC_ENABLE_ENABLE (0x1 << 1) /* Transfer complete Interrupts are enabled */
 243 #define MMCHS_SD_IE_TC_ENABLE_CLEAR  (0x1 << 1) /* Clearing TC is done by writing a 0x1 */
 244
 245 #define MMCHS_SD_IE_BRR_ENABLE         (0x1 << 5) /* Buffer read ready interrupt  */
 246 #define MMCHS_SD_IE_BRR_ENABLE_DISABLE (0x0 << 5) /* Buffer read ready interrupt disable */
 247 #define MMCHS_SD_IE_BRR_ENABLE_ENABLE  (0x1 << 5) /* Buffer read ready interrupt enable */
 248 #define MMCHS_SD_IE_BRR_ENABLE_CLEAR   (0x1 << 5) /* Buffer read ready interrupt clear */
 249
 250 #define MMCHS_SD_IE_BWR_ENABLE         (0x1 << 4) /* Buffer write ready interrupt  */
 251 #define MMCHS_SD_IE_BWR_ENABLE_DISABLE (0x0 << 4) /* Buffer write ready interrupt disable */
 252 #define MMCHS_SD_IE_BWR_ENABLE_ENABLE  (0x1 << 4) /* Buffer write ready interrupt enable */
 253 #define MMCHS_SD_IE_BWR_ENABLE_CLEAR   (0x1 << 4) /* Buffer write ready interrupt clear */
 254
 255 #define MMCHS_SD_CAPA_VS_MASK (0x7 << 24 )  /* voltage mask */
 256 #define MMCHS_SD_CAPA_VS18 (0x01 << 26 )  /* 1.8 volt */
 257 #define MMCHS_SD_CAPA_VS30 (0x01 << 25 )  /* 3.0 volt */
 258 #define MMCHS_SD_CAPA_VS33 (0x01 << 24 )  /* 3.3 volt */
 259