Merge tag 'mmc-7-24-2020' of https://gitlab.denx.de/u-boot/custodians/u-boot-mmc

- Correct mmc_spi check condition
- Generate R1/R2/R1b response
- Read SSR for SD SPI

drivers/mmc/mmc.c

@@ -1753,6 +1753,11 @@ static int sd_select_mode_and_width(struct mmc *mmc, uint card_caps)
 		mmc_set_bus_width(mmc, 1);
 		mmc_select_mode(mmc, MMC_LEGACY);
 		mmc_set_clock(mmc, mmc->tran_speed, MMC_CLK_ENABLE);
+#if CONFIG_IS_ENABLED(MMC_WRITE)
+		err = sd_read_ssr(mmc);
+		if (err)
+			pr_warn("unable to read ssr\n");
+#endif
 		return 0;
 	}
 

drivers/mmc/mmc_spi.c

@@ -59,6 +59,7 @@
 #define CMD_TIMEOUT			8
 #define READ_TIMEOUT			3000000 /* 1 sec */
 #define WRITE_TIMEOUT			3000000 /* 1 sec */
+#define R1B_TIMEOUT			3000000 /* 1 sec */
 
 struct mmc_spi_plat {
 	struct mmc_config cfg;
@@ -72,7 +73,7 @@ struct mmc_spi_priv {
 static int mmc_spi_sendcmd(struct udevice *dev,
 			   ushort cmdidx, u32 cmdarg, u32 resp_type,
 			   u8 *resp, u32 resp_size,
-			   bool resp_match, u8 resp_match_value)
+			   bool resp_match, u8 resp_match_value, bool r1b)
 {
 	int i, rpos = 0, ret = 0;
 	u8 cmdo[7], r;
@@ -105,12 +106,14 @@ static int mmc_spi_sendcmd(struct udevice *dev,
 	if (resp_match) {
 		r = ~resp_match_value;
 		i = CMD_TIMEOUT;
-		while (i--) {
+		while (i) {
 			ret = dm_spi_xfer(dev, 1 * 8, NULL, &r, 0);
 			if (ret)
 				return ret;
 			debug(" resp%d=0x%x", rpos, r);
 			rpos++;
+			i--;
+
 			if (r == resp_match_value)
 				break;
 		}
@@ -131,6 +134,24 @@ static int mmc_spi_sendcmd(struct udevice *dev,
 		resp[i] = r;
 	}
 
+	if (r1b == true) {
+		i = R1B_TIMEOUT;
+		while (i) {
+			ret = dm_spi_xfer(dev, 1 * 8, NULL, &r, 0);
+			if (ret)
+				return ret;
+
+			debug(" resp%d=0x%x", rpos, r);
+			rpos++;
+			i--;
+
+			if (r)
+				break;
+		}
+		if (!i)
+			return -ETIMEDOUT;
+	}
+
 	debug("\n");
 
 	return 0;
@@ -263,8 +284,8 @@ static int dm_mmc_spi_request(struct udevice *dev, struct mmc_cmd *cmd,
 	int i, multi, ret = 0;
 	u8 *resp = NULL;
 	u32 resp_size = 0;
-	bool resp_match = false;
-	u8 resp8 = 0, resp40[5] = { 0 }, resp_match_value = 0;
+	bool resp_match = false, r1b = false;
+	u8 resp8 = 0, resp16[2] = { 0 }, resp40[5] = { 0 }, resp_match_value = 0;
 
 	dm_spi_claim_bus(dev);
 
@@ -289,20 +310,33 @@ static int dm_mmc_spi_request(struct udevice *dev, struct mmc_cmd *cmd,
 		resp_size = sizeof(resp40);
 		break;
 	case MMC_CMD_SEND_STATUS:
+		resp = (u8 *)&resp16[0];
+		resp_size = sizeof(resp16);
+		break;
 	case MMC_CMD_SET_BLOCKLEN:
 	case MMC_CMD_SPI_CRC_ON_OFF:
-	case MMC_CMD_STOP_TRANSMISSION:
 		resp = &resp8;
 		resp_size = sizeof(resp8);
 		resp_match = true;
 		resp_match_value = 0x0;
 		break;
+	case MMC_CMD_STOP_TRANSMISSION:
+	case MMC_CMD_ERASE:
+		resp = &resp8;
+		resp_size = sizeof(resp8);
+		r1b = true;
+		break;
 	case MMC_CMD_SEND_CSD:
 	case MMC_CMD_SEND_CID:
 	case MMC_CMD_READ_SINGLE_BLOCK:
 	case MMC_CMD_READ_MULTIPLE_BLOCK:
 	case MMC_CMD_WRITE_SINGLE_BLOCK:
 	case MMC_CMD_WRITE_MULTIPLE_BLOCK:
+	case MMC_CMD_APP_CMD:
+	case SD_CMD_ERASE_WR_BLK_START:
+	case SD_CMD_ERASE_WR_BLK_END:
+		resp = &resp8;
+		resp_size = sizeof(resp8);
 		break;
 	default:
 		resp = &resp8;
@@ -313,7 +347,7 @@ static int dm_mmc_spi_request(struct udevice *dev, struct mmc_cmd *cmd,
 	};
 
 	ret = mmc_spi_sendcmd(dev, cmd->cmdidx, cmd->cmdarg, cmd->resp_type,
-			      resp, resp_size, resp_match, resp_match_value);
+			      resp, resp_size, resp_match, resp_match_value, r1b);
 	if (ret)
 		goto done;
 
@@ -330,8 +364,10 @@ static int dm_mmc_spi_request(struct udevice *dev, struct mmc_cmd *cmd,
 		cmd->response[0] |= (uint)resp40[1] << 24;
 		break;
 	case MMC_CMD_SEND_STATUS:
-		cmd->response[0] = (resp8 & 0xff) ?
-			MMC_STATUS_ERROR : MMC_STATUS_RDY_FOR_DATA;
+		if (resp16[0] || resp16[1])
+			cmd->response[0] = MMC_STATUS_ERROR;
+		else
+			cmd->response[0] = MMC_STATUS_RDY_FOR_DATA;
 		break;
 	case MMC_CMD_SEND_CID:
 	case MMC_CMD_SEND_CSD: