mmc.c (7382e691ca528785d9d3ca8b74c4811b4f0bfe07) mmc.c (35f9e196f9573af4091076c19aaa6d5afeb91338)
1/*
2 * Copyright 2008, Freescale Semiconductor, Inc
3 * Andy Fleming
4 *
5 * Based vaguely on the Linux code
6 *
7 * SPDX-License-Identifier: GPL-2.0+
8 */

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144{
145 int status;
146
147 status = (cmd->response[0] & MMC_STATUS_CURR_STATE) >> 9;
148 printf("CURR STATE:%d\n", status);
149}
150#endif
151
1/*
2 * Copyright 2008, Freescale Semiconductor, Inc
3 * Andy Fleming
4 *
5 * Based vaguely on the Linux code
6 *
7 * SPDX-License-Identifier: GPL-2.0+
8 */

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144{
145 int status;
146
147 status = (cmd->response[0] & MMC_STATUS_CURR_STATE) >> 9;
148 printf("CURR STATE:%d\n", status);
149}
150#endif
151
152#if CONFIG_IS_ENABLED(MMC_VERBOSE) || defined(DEBUG)
153const char *mmc_mode_name(enum bus_mode mode)
154{
155 static const char *const names[] = {
156 [MMC_LEGACY] = "MMC legacy",
157 [SD_LEGACY] = "SD Legacy",
158 [MMC_HS] = "MMC High Speed (26MHz)",
159 [SD_HS] = "SD High Speed (50MHz)",
160 [UHS_SDR12] = "UHS SDR12 (25MHz)",
161 [UHS_SDR25] = "UHS SDR25 (50MHz)",
162 [UHS_SDR50] = "UHS SDR50 (100MHz)",
163 [UHS_SDR104] = "UHS SDR104 (208MHz)",
164 [UHS_DDR50] = "UHS DDR50 (50MHz)",
165 [MMC_HS_52] = "MMC High Speed (52MHz)",
166 [MMC_DDR_52] = "MMC DDR52 (52MHz)",
167 [MMC_HS_200] = "HS200 (200MHz)",
168 };
169
170 if (mode >= MMC_MODES_END)
171 return "Unknown mode";
172 else
173 return names[mode];
174}
175#endif
176
177static int mmc_select_mode(struct mmc *mmc, enum bus_mode mode)
178{
179 mmc->selected_mode = mode;
180 debug("selecting mode %s (freq : %d MHz)\n", mmc_mode_name(mode),
181 mmc->tran_speed / 1000000);
182 return 0;
183}
184
152#if !CONFIG_IS_ENABLED(DM_MMC)
153int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
154{
155 int ret;
156
157 mmmc_trace_before_send(mmc, cmd);
158 ret = mmc->cfg->ops->send_cmd(mmc, cmd, data);
159 mmmc_trace_after_send(mmc, cmd, ret);

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1133
1134 mmc_set_bus_width(mmc, 4);
1135 }
1136
1137 err = sd_read_ssr(mmc);
1138 if (err)
1139 return err;
1140
185#if !CONFIG_IS_ENABLED(DM_MMC)
186int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
187{
188 int ret;
189
190 mmmc_trace_before_send(mmc, cmd);
191 ret = mmc->cfg->ops->send_cmd(mmc, cmd, data);
192 mmmc_trace_after_send(mmc, cmd, ret);

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1166
1167 mmc_set_bus_width(mmc, 4);
1168 }
1169
1170 err = sd_read_ssr(mmc);
1171 if (err)
1172 return err;
1173
1141 if (mmc->card_caps & MMC_MODE_HS)
1174 if (mmc->card_caps & MMC_MODE_HS) {
1175 mmc_select_mode(mmc, SD_HS);
1142 mmc->tran_speed = 50000000;
1176 mmc->tran_speed = 50000000;
1143 else
1177 } else {
1178 mmc_select_mode(mmc, SD_LEGACY);
1144 mmc->tran_speed = 25000000;
1179 mmc->tran_speed = 25000000;
1180 }
1145
1146 return 0;
1147}
1148
1149/*
1150 * read the compare the part of ext csd that is constant.
1151 * This can be used to check that the transfer is working
1152 * as expected.

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1253 err = mmc_read_and_compare_ext_csd(mmc);
1254 if (!err)
1255 break;
1256 }
1257
1258 if (err)
1259 return err;
1260
1181
1182 return 0;
1183}
1184
1185/*
1186 * read the compare the part of ext csd that is constant.
1187 * This can be used to check that the transfer is working
1188 * as expected.

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1289 err = mmc_read_and_compare_ext_csd(mmc);
1290 if (!err)
1291 break;
1292 }
1293
1294 if (err)
1295 return err;
1296
1261 if (mmc->card_caps & MMC_MODE_HS) {
1262 if (mmc->card_caps & MMC_MODE_HS_52MHz)
1263 mmc->tran_speed = 52000000;
1297 if (mmc->card_caps & MMC_MODE_HS_52MHz) {
1298 if (mmc->ddr_mode)
1299 mmc_select_mode(mmc, MMC_DDR_52);
1264 else
1300 else
1265 mmc->tran_speed = 26000000;
1301 mmc_select_mode(mmc, MMC_HS_52);
1302 mmc->tran_speed = 52000000;
1303 } else if (mmc->card_caps & MMC_MODE_HS) {
1304 mmc_select_mode(mmc, MMC_HS);
1305 mmc->tran_speed = 26000000;
1266 }
1267
1268 return err;
1269}
1270
1271static int mmc_startup_v4(struct mmc *mmc)
1272{
1273 int err, i;

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1529 break;
1530 }
1531 }
1532
1533 /* divide frequency by 10, since the mults are 10x bigger */
1534 freq = fbase[(cmd.response[0] & 0x7)];
1535 mult = multipliers[((cmd.response[0] >> 3) & 0xf)];
1536
1306 }
1307
1308 return err;
1309}
1310
1311static int mmc_startup_v4(struct mmc *mmc)
1312{
1313 int err, i;

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1569 break;
1570 }
1571 }
1572
1573 /* divide frequency by 10, since the mults are 10x bigger */
1574 freq = fbase[(cmd.response[0] & 0x7)];
1575 mult = multipliers[((cmd.response[0] >> 3) & 0xf)];
1576
1537 mmc->tran_speed = freq * mult;
1577 mmc->legacy_speed = freq * mult;
1578 mmc->tran_speed = mmc->legacy_speed;
1579 mmc_select_mode(mmc, MMC_LEGACY);
1538
1539 mmc->dsr_imp = ((cmd.response[1] >> 12) & 0x1);
1540 mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf);
1541
1542 if (IS_SD(mmc))
1543 mmc->write_bl_len = mmc->read_bl_len;
1544 else
1545 mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf);

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1581 mmc->dsr_imp = ((cmd.response[1] >> 12) & 0x1);
1582 mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf);
1583
1584 if (IS_SD(mmc))
1585 mmc->write_bl_len = mmc->read_bl_len;
1586 else
1587 mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf);

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