[PATCH 1/3] mci: Add more respone types

Sascha Hauer s.hauer at pengutronix.de
Tue Jan 10 07:50:37 PST 2023


Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 include/mci.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/include/mci.h b/include/mci.h
index d949310fac..d3201e17e6 100644
--- a/include/mci.h
+++ b/include/mci.h
@@ -326,6 +326,17 @@
 #define MMC_RSP_BUSY    (1 << 3)                /* card may send busy */
 #define MMC_RSP_OPCODE  (1 << 4)                /* response contains opcode */
 
+#define MMC_CMD_MASK    (3 << 5)                /* non-SPI command type */
+#define MMC_CMD_AC      (0 << 5)
+#define MMC_CMD_ADTC    (1 << 5)
+#define MMC_CMD_BC      (2 << 5)
+#define MMC_CMD_BCR     (3 << 5)
+
+#define MMC_RSP_SPI_S1  (1 << 7)                /* one status byte */
+#define MMC_RSP_SPI_S2  (1 << 8)                /* second byte */
+#define MMC_RSP_SPI_B4  (1 << 9)                /* four data bytes */
+#define MMC_RSP_SPI_BUSY (1 << 10)              /* card may send busy */
+
 #define MMC_RSP_NONE    (0)
 #define MMC_RSP_R1      (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
 #define MMC_RSP_R1b	(MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE|MMC_RSP_BUSY)
@@ -336,6 +347,19 @@
 #define MMC_RSP_R6      (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
 #define MMC_RSP_R7      (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
 
+/*
+ * These are the SPI response types for MMC, SD, and SDIO cards.
+ * Commands return R1, with maybe more info.  Zero is an error type;
+ * callers must always provide the appropriate MMC_RSP_SPI_Rx flags.
+ */
+#define MMC_RSP_SPI_R1  (MMC_RSP_SPI_S1)
+#define MMC_RSP_SPI_R1B (MMC_RSP_SPI_S1|MMC_RSP_SPI_BUSY)
+#define MMC_RSP_SPI_R2  (MMC_RSP_SPI_S1|MMC_RSP_SPI_S2)
+#define MMC_RSP_SPI_R3  (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4)
+#define MMC_RSP_SPI_R4  (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4)
+#define MMC_RSP_SPI_R5  (MMC_RSP_SPI_S1|MMC_RSP_SPI_S2)
+#define MMC_RSP_SPI_R7  (MMC_RSP_SPI_S1|MMC_RSP_SPI_B4)
+
 /** command information to be sent to the SD/MMC card */
 struct mci_cmd {
 	unsigned cmdidx;	/**< Command to be sent to the SD/MMC card */
-- 
2.30.2




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