drivers/scsi/ufs/tc-dwc-g210.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Synopsys G210 Test Chip driver
   4  *
   5  * Copyright (C) 2015-2016 Synopsys, Inc. (www.synopsys.com)
   6  *
   7  * Authors: Joao Pinto <jpinto@synopsys.com>
   8  */
   9
  10 #include "ufshcd.h"
  11 #include "unipro.h"
  12
  13 #include "ufshcd-dwc.h"
  14 #include "ufshci-dwc.h"
  15 #include "tc-dwc-g210.h"
  16
  17 /**
  18  * tc_dwc_g210_setup_40bit_rmmi()
  19  * This function configures Synopsys TC specific atributes (40-bit RMMI)
  20  * @hba: Pointer to drivers structure
  21  *
  22  * Returns 0 on success or non-zero value on failure
  23  */
  24 static int tc_dwc_g210_setup_40bit_rmmi(struct ufs_hba *hba)
  25 {
  26         static const struct ufshcd_dme_attr_val setup_attrs[] = {
  27                 { UIC_ARG_MIB(TX_GLOBALHIBERNATE), 0x00, DME_LOCAL },
  28                 { UIC_ARG_MIB(REFCLKMODE), 0x01, DME_LOCAL },
  29                 { UIC_ARG_MIB(CDIRECTCTRL6), 0x80, DME_LOCAL },
  30                 { UIC_ARG_MIB(CBDIVFACTOR), 0x08, DME_LOCAL },
  31                 { UIC_ARG_MIB(CBDCOCTRL5), 0x64, DME_LOCAL },
  32                 { UIC_ARG_MIB(CBPRGTUNING), 0x09, DME_LOCAL },
  33                 { UIC_ARG_MIB(RTOBSERVESELECT), 0x00, DME_LOCAL },
  34                 { UIC_ARG_MIB_SEL(TX_REFCLKFREQ, SELIND_LN0_TX), 0x01,
  35                                                                 DME_LOCAL },
  36                 { UIC_ARG_MIB_SEL(TX_CFGCLKFREQVAL, SELIND_LN0_TX), 0x19,
  37                                                                 DME_LOCAL },
  38                 { UIC_ARG_MIB_SEL(CFGEXTRATTR, SELIND_LN0_TX), 0x14,
  39                                                                 DME_LOCAL },
  40                 { UIC_ARG_MIB_SEL(DITHERCTRL2, SELIND_LN0_TX), 0xd6,
  41                                                                 DME_LOCAL },
  42                 { UIC_ARG_MIB_SEL(RX_REFCLKFREQ, SELIND_LN0_RX), 0x01,
  43                                                                 DME_LOCAL },
  44                 { UIC_ARG_MIB_SEL(RX_CFGCLKFREQVAL, SELIND_LN0_RX), 0x19,
  45                                                                 DME_LOCAL },
  46                 { UIC_ARG_MIB_SEL(CFGWIDEINLN, SELIND_LN0_RX), 4,
  47                                                                 DME_LOCAL },
  48                 { UIC_ARG_MIB_SEL(CFGRXCDR8, SELIND_LN0_RX), 0x80,
  49                                                                 DME_LOCAL },
  50                 { UIC_ARG_MIB(DIRECTCTRL10), 0x04, DME_LOCAL },
  51                 { UIC_ARG_MIB(DIRECTCTRL19), 0x02, DME_LOCAL },
  52                 { UIC_ARG_MIB_SEL(CFGRXCDR8, SELIND_LN0_RX), 0x80,
  53                                                                 DME_LOCAL },
  54                 { UIC_ARG_MIB_SEL(ENARXDIRECTCFG4, SELIND_LN0_RX), 0x03,
  55                                                                 DME_LOCAL },
  56                 { UIC_ARG_MIB_SEL(CFGRXOVR8, SELIND_LN0_RX), 0x16,
  57                                                                 DME_LOCAL },
  58                 { UIC_ARG_MIB_SEL(RXDIRECTCTRL2, SELIND_LN0_RX), 0x42,
  59                                                                 DME_LOCAL },
  60                 { UIC_ARG_MIB_SEL(ENARXDIRECTCFG3, SELIND_LN0_RX), 0xa4,
  61                                                                 DME_LOCAL },
  62                 { UIC_ARG_MIB_SEL(RXCALCTRL, SELIND_LN0_RX), 0x01,
  63                                                                 DME_LOCAL },
  64                 { UIC_ARG_MIB_SEL(ENARXDIRECTCFG2, SELIND_LN0_RX), 0x01,
  65                                                                 DME_LOCAL },
  66                 { UIC_ARG_MIB_SEL(CFGRXOVR4, SELIND_LN0_RX), 0x28,
  67                                                                 DME_LOCAL },
  68                 { UIC_ARG_MIB_SEL(RXSQCTRL, SELIND_LN0_RX), 0x1E,
  69                                                                 DME_LOCAL },
  70                 { UIC_ARG_MIB_SEL(CFGRXOVR6, SELIND_LN0_RX), 0x2f,
  71                                                                 DME_LOCAL },
  72                 { UIC_ARG_MIB_SEL(CFGRXOVR6, SELIND_LN0_RX), 0x2f,
  73                                                                 DME_LOCAL },
  74                 { UIC_ARG_MIB(CBPRGPLL2), 0x00, DME_LOCAL },
  75         };
  76
  77         return ufshcd_dwc_dme_set_attrs(hba, setup_attrs,
  78                                                 ARRAY_SIZE(setup_attrs));
  79 }
  80
  81 /**
  82  * tc_dwc_g210_setup_20bit_rmmi_lane0()
  83  * This function configures Synopsys TC 20-bit RMMI Lane 0
  84  * @hba: Pointer to drivers structure
  85  *
  86  * Returns 0 on success or non-zero value on failure
  87  */
  88 static int tc_dwc_g210_setup_20bit_rmmi_lane0(struct ufs_hba *hba)
  89 {
  90         static const struct ufshcd_dme_attr_val setup_attrs[] = {
  91                 { UIC_ARG_MIB_SEL(TX_REFCLKFREQ, SELIND_LN0_TX), 0x01,
  92                                                                 DME_LOCAL },
  93                 { UIC_ARG_MIB_SEL(TX_CFGCLKFREQVAL, SELIND_LN0_TX), 0x19,
  94                                                                 DME_LOCAL },
  95                 { UIC_ARG_MIB_SEL(RX_CFGCLKFREQVAL, SELIND_LN0_RX), 0x19,
  96                                                                 DME_LOCAL },
  97                 { UIC_ARG_MIB_SEL(CFGEXTRATTR, SELIND_LN0_TX), 0x12,
  98                                                                 DME_LOCAL },
  99                 { UIC_ARG_MIB_SEL(DITHERCTRL2, SELIND_LN0_TX), 0xd6,
 100                                                                 DME_LOCAL },
 101                 { UIC_ARG_MIB_SEL(RX_REFCLKFREQ, SELIND_LN0_RX), 0x01,
 102                                                                 DME_LOCAL },
 103                 { UIC_ARG_MIB_SEL(CFGWIDEINLN, SELIND_LN0_RX), 2,
 104                                                                 DME_LOCAL },
 105                 { UIC_ARG_MIB_SEL(CFGRXCDR8, SELIND_LN0_RX), 0x80,
 106                                                                 DME_LOCAL },
 107                 { UIC_ARG_MIB(DIRECTCTRL10), 0x04, DME_LOCAL },
 108                 { UIC_ARG_MIB(DIRECTCTRL19), 0x02, DME_LOCAL },
 109                 { UIC_ARG_MIB_SEL(ENARXDIRECTCFG4, SELIND_LN0_RX), 0x03,
 110                                                                 DME_LOCAL },
 111                 { UIC_ARG_MIB_SEL(CFGRXOVR8, SELIND_LN0_RX), 0x16,
 112                                                                 DME_LOCAL },
 113                 { UIC_ARG_MIB_SEL(RXDIRECTCTRL2, SELIND_LN0_RX), 0x42,
 114                                                                 DME_LOCAL },
 115                 { UIC_ARG_MIB_SEL(ENARXDIRECTCFG3, SELIND_LN0_RX), 0xa4,
 116                                                                 DME_LOCAL },
 117                 { UIC_ARG_MIB_SEL(RXCALCTRL, SELIND_LN0_RX), 0x01,
 118                                                                 DME_LOCAL },
 119                 { UIC_ARG_MIB_SEL(ENARXDIRECTCFG2, SELIND_LN0_RX), 0x01,
 120                                                                 DME_LOCAL },
 121                 { UIC_ARG_MIB_SEL(CFGRXOVR4, SELIND_LN0_RX), 0x28,
 122                                                                 DME_LOCAL },
 123                 { UIC_ARG_MIB_SEL(RXSQCTRL, SELIND_LN0_RX), 0x1E,
 124                                                                 DME_LOCAL },
 125                 { UIC_ARG_MIB_SEL(CFGRXOVR6, SELIND_LN0_RX), 0x2f,
 126                                                                 DME_LOCAL },
 127                 { UIC_ARG_MIB(CBPRGPLL2), 0x00, DME_LOCAL },
 128         };
 129
 130         return ufshcd_dwc_dme_set_attrs(hba, setup_attrs,
 131                                                 ARRAY_SIZE(setup_attrs));
 132 }
 133
 134 /**
 135  * tc_dwc_g210_setup_20bit_rmmi_lane1()
 136  * This function configures Synopsys TC 20-bit RMMI Lane 1
 137  * @hba: Pointer to drivers structure
 138  *
 139  * Returns 0 on success or non-zero value on failure
 140  */
 141 static int tc_dwc_g210_setup_20bit_rmmi_lane1(struct ufs_hba *hba)
 142 {
 143         int connected_rx_lanes = 0;
 144         int connected_tx_lanes = 0;
 145         int ret = 0;
 146
 147         static const struct ufshcd_dme_attr_val setup_tx_attrs[] = {
 148                 { UIC_ARG_MIB_SEL(TX_REFCLKFREQ, SELIND_LN1_TX), 0x0d,
 149                                                                 DME_LOCAL },
 150                 { UIC_ARG_MIB_SEL(TX_CFGCLKFREQVAL, SELIND_LN1_TX), 0x19,
 151                                                                 DME_LOCAL },
 152                 { UIC_ARG_MIB_SEL(CFGEXTRATTR, SELIND_LN1_TX), 0x12,
 153                                                                 DME_LOCAL },
 154                 { UIC_ARG_MIB_SEL(DITHERCTRL2, SELIND_LN0_TX), 0xd6,
 155                                                                 DME_LOCAL },
 156         };
 157
 158         static const struct ufshcd_dme_attr_val setup_rx_attrs[] = {
 159                 { UIC_ARG_MIB_SEL(RX_REFCLKFREQ, SELIND_LN1_RX), 0x01,
 160                                                                 DME_LOCAL },
 161                 { UIC_ARG_MIB_SEL(RX_CFGCLKFREQVAL, SELIND_LN1_RX), 0x19,
 162                                                                 DME_LOCAL },
 163                 { UIC_ARG_MIB_SEL(CFGWIDEINLN, SELIND_LN1_RX), 2,
 164                                                                 DME_LOCAL },
 165                 { UIC_ARG_MIB_SEL(CFGRXCDR8, SELIND_LN1_RX), 0x80,
 166                                                                 DME_LOCAL },
 167                 { UIC_ARG_MIB_SEL(ENARXDIRECTCFG4, SELIND_LN1_RX), 0x03,
 168                                                                 DME_LOCAL },
 169                 { UIC_ARG_MIB_SEL(CFGRXOVR8, SELIND_LN1_RX), 0x16,
 170                                                                 DME_LOCAL },
 171                 { UIC_ARG_MIB_SEL(RXDIRECTCTRL2, SELIND_LN1_RX), 0x42,
 172                                                                 DME_LOCAL },
 173                 { UIC_ARG_MIB_SEL(ENARXDIRECTCFG3, SELIND_LN1_RX), 0xa4,
 174                                                                 DME_LOCAL },
 175                 { UIC_ARG_MIB_SEL(RXCALCTRL, SELIND_LN1_RX), 0x01,
 176                                                                 DME_LOCAL },
 177                 { UIC_ARG_MIB_SEL(ENARXDIRECTCFG2, SELIND_LN1_RX), 0x01,
 178                                                                 DME_LOCAL },
 179                 { UIC_ARG_MIB_SEL(CFGRXOVR4, SELIND_LN1_RX), 0x28,
 180                                                                 DME_LOCAL },
 181                 { UIC_ARG_MIB_SEL(RXSQCTRL, SELIND_LN1_RX), 0x1E,
 182                                                                 DME_LOCAL },
 183                 { UIC_ARG_MIB_SEL(CFGRXOVR6, SELIND_LN1_RX), 0x2f,
 184                                                                 DME_LOCAL },
 185         };
 186
 187         /* Get the available lane count */
 188         ufshcd_dme_get(hba, UIC_ARG_MIB(PA_AVAILRXDATALANES),
 189                         &connected_rx_lanes);
 190         ufshcd_dme_get(hba, UIC_ARG_MIB(PA_AVAILTXDATALANES),
 191                         &connected_tx_lanes);
 192
 193         if (connected_tx_lanes == 2) {
 194
 195                 ret = ufshcd_dwc_dme_set_attrs(hba, setup_tx_attrs,
 196                                                 ARRAY_SIZE(setup_tx_attrs));
 197
 198                 if (ret)
 199                         goto out;
 200         }
 201
 202         if (connected_rx_lanes == 2) {
 203                 ret = ufshcd_dwc_dme_set_attrs(hba, setup_rx_attrs,
 204                                                 ARRAY_SIZE(setup_rx_attrs));
 205         }
 206
 207 out:
 208         return ret;
 209 }
 210
 211 /**
 212  * tc_dwc_g210_setup_20bit_rmmi()
 213  * This function configures Synopsys TC specific atributes (20-bit RMMI)
 214  * @hba: Pointer to drivers structure
 215  *
 216  * Returns 0 on success or non-zero value on failure
 217  */
 218 static int tc_dwc_g210_setup_20bit_rmmi(struct ufs_hba *hba)
 219 {
 220         int ret = 0;
 221
 222         static const struct ufshcd_dme_attr_val setup_attrs[] = {
 223                 { UIC_ARG_MIB(TX_GLOBALHIBERNATE), 0x00, DME_LOCAL },
 224                 { UIC_ARG_MIB(REFCLKMODE), 0x01, DME_LOCAL },
 225                 { UIC_ARG_MIB(CDIRECTCTRL6), 0xc0, DME_LOCAL },
 226                 { UIC_ARG_MIB(CBDIVFACTOR), 0x44, DME_LOCAL },
 227                 { UIC_ARG_MIB(CBDCOCTRL5), 0x64, DME_LOCAL },
 228                 { UIC_ARG_MIB(CBPRGTUNING), 0x09, DME_LOCAL },
 229                 { UIC_ARG_MIB(RTOBSERVESELECT), 0x00, DME_LOCAL },
 230         };
 231
 232         ret = ufshcd_dwc_dme_set_attrs(hba, setup_attrs,
 233                                                 ARRAY_SIZE(setup_attrs));
 234         if (ret)
 235                 goto out;
 236
 237         /* Lane 0 configuration*/
 238         ret = tc_dwc_g210_setup_20bit_rmmi_lane0(hba);
 239         if (ret)
 240                 goto out;
 241
 242         /* Lane 1 configuration*/
 243         ret = tc_dwc_g210_setup_20bit_rmmi_lane1(hba);
 244         if (ret)
 245                 goto out;
 246
 247 out:
 248         return ret;
 249 }
 250
 251 /**
 252  * tc_dwc_g210_config_40_bit()
 253  * This function configures Local (host) Synopsys 40-bit TC specific attributes
 254  *
 255  * @hba: Pointer to drivers structure
 256  *
 257  * Returns 0 on success non-zero value on failure
 258  */
 259 int tc_dwc_g210_config_40_bit(struct ufs_hba *hba)
 260 {
 261         int ret = 0;
 262
 263         dev_info(hba->dev, "Configuring Test Chip 40-bit RMMI\n");
 264         ret = tc_dwc_g210_setup_40bit_rmmi(hba);
 265         if (ret) {
 266                 dev_err(hba->dev, "Configuration failed\n");
 267                 goto out;
 268         }
 269
 270         /* To write Shadow register bank to effective configuration block */
 271         ret = ufshcd_dme_set(hba, UIC_ARG_MIB(VS_MPHYCFGUPDT), 0x01);
 272         if (ret)
 273                 goto out;
 274
 275         /* To configure Debug OMC */
 276         ret = ufshcd_dme_set(hba, UIC_ARG_MIB(VS_DEBUGOMC), 0x01);
 277
 278 out:
 279         return ret;
 280 }
 281 EXPORT_SYMBOL(tc_dwc_g210_config_40_bit);
 282
 283 /**
 284  * tc_dwc_g210_config_20_bit()
 285  * This function configures Local (host) Synopsys 20-bit TC specific attributes
 286  *
 287  * @hba: Pointer to drivers structure
 288  *
 289  * Returns 0 on success non-zero value on failure
 290  */
 291 int tc_dwc_g210_config_20_bit(struct ufs_hba *hba)
 292 {
 293         int ret = 0;
 294
 295         dev_info(hba->dev, "Configuring Test Chip 20-bit RMMI\n");
 296         ret = tc_dwc_g210_setup_20bit_rmmi(hba);
 297         if (ret) {
 298                 dev_err(hba->dev, "Configuration failed\n");
 299                 goto out;
 300         }
 301
 302         /* To write Shadow register bank to effective configuration block */
 303         ret = ufshcd_dme_set(hba, UIC_ARG_MIB(VS_MPHYCFGUPDT), 0x01);
 304         if (ret)
 305                 goto out;
 306
 307         /* To configure Debug OMC */
 308         ret = ufshcd_dme_set(hba, UIC_ARG_MIB(VS_DEBUGOMC), 0x01);
 309
 310 out:
 311         return ret;
 312 }
 313 EXPORT_SYMBOL(tc_dwc_g210_config_20_bit);
 314
 315 MODULE_AUTHOR("Joao Pinto <Joao.Pinto@synopsys.com>");
 316 MODULE_DESCRIPTION("Synopsys G210 Test Chip driver");
 317 MODULE_LICENSE("Dual BSD/GPL");