Blackfin: add driver for on-chip MMC/SD controller

This is a port of the Linux Blackfin on-chip SDH driver to U-Boot.

Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

2 files changed, 123 insertions, 0 deletions

diff --git a/include/asm-blackfin/mach-common/bits/sdh.h b/include/asm-blackfin/mach-common/bits/sdh.h
new file mode 100644
index 0000000..8c5dd33
--- /dev/null
+++ b/include/asm-blackfin/mach-common/bits/sdh.h
@@ -0,0 +1,122 @@
+/*
+ * SDH Masks
+ */
+
+#ifndef __BFIN_PERIPHERAL_SDH__
+#define __BFIN_PERIPHERAL_SDH__
+
+/* Bit masks for SDH_COMMAND */
+#define                   CMD_IDX  0x3f       /* Command Index */
+#define                   CMD_RSP  0x40       /* Response */
+#define                 CMD_L_RSP  0x80       /* Long Response */
+#define                 CMD_INT_E  0x100      /* Command Interrupt */
+#define                CMD_PEND_E  0x200      /* Command Pending */
+#define                     CMD_E  0x400      /* Command Enable */
+
+/* Bit masks for SDH_PWR_CTL */
+#define                    PWR_ON  0x3        /* Power On */
+#define                 SD_CMD_OD  0x40       /* Open Drain Output */
+#define                   ROD_CTL  0x80       /* Rod Control */
+
+/* Bit masks for SDH_CLK_CTL */
+#define                    CLKDIV  0xff       /* MC_CLK Divisor */
+#define                     CLK_E  0x100      /* MC_CLK Bus Clock Enable */
+#define                  PWR_SV_E  0x200      /* Power Save Enable */
+#define             CLKDIV_BYPASS  0x400      /* Bypass Divisor */
+#define                  WIDE_BUS  0x800      /* Wide Bus Mode Enable */
+
+/* Bit masks for SDH_RESP_CMD */
+#define                  RESP_CMD  0x3f       /* Response Command */
+
+/* Bit masks for SDH_DATA_CTL */
+#define                     DTX_E  0x1        /* Data Transfer Enable */
+#define                   DTX_DIR  0x2        /* Data Transfer Direction */
+#define                  DTX_MODE  0x4        /* Data Transfer Mode */
+#define                 DTX_DMA_E  0x8        /* Data Transfer DMA Enable */
+#define              DTX_BLK_LGTH  0xf0       /* Data Transfer Block Length */
+
+/* Bit masks for SDH_STATUS */
+#define              CMD_CRC_FAIL  0x1        /* CMD CRC Fail */
+#define              DAT_CRC_FAIL  0x2        /* Data CRC Fail */
+#define              CMD_TIME_OUT  0x4        /* CMD Time Out */
+#define              DAT_TIME_OUT  0x8        /* Data Time Out */
+#define               TX_UNDERRUN  0x10       /* Transmit Underrun */
+#define                RX_OVERRUN  0x20       /* Receive Overrun */
+#define              CMD_RESP_END  0x40       /* CMD Response End */
+#define                  CMD_SENT  0x80       /* CMD Sent */
+#define                   DAT_END  0x100      /* Data End */
+#define             START_BIT_ERR  0x200      /* Start Bit Error */
+#define               DAT_BLK_END  0x400      /* Data Block End */
+#define                   CMD_ACT  0x800      /* CMD Active */
+#define                    TX_ACT  0x1000     /* Transmit Active */
+#define                    RX_ACT  0x2000     /* Receive Active */
+#define              TX_FIFO_STAT  0x4000     /* Transmit FIFO Status */
+#define              RX_FIFO_STAT  0x8000     /* Receive FIFO Status */
+#define              TX_FIFO_FULL  0x10000    /* Transmit FIFO Full */
+#define              RX_FIFO_FULL  0x20000    /* Receive FIFO Full */
+#define              TX_FIFO_ZERO  0x40000    /* Transmit FIFO Empty */
+#define               RX_DAT_ZERO  0x80000    /* Receive FIFO Empty */
+#define                TX_DAT_RDY  0x100000   /* Transmit Data Available */
+#define               RX_FIFO_RDY  0x200000   /* Receive Data Available */
+
+/* Bit masks for SDH_STATUS_CLR */
+#define         CMD_CRC_FAIL_STAT  0x1        /* CMD CRC Fail Status */
+#define         DAT_CRC_FAIL_STAT  0x2        /* Data CRC Fail Status */
+#define          CMD_TIMEOUT_STAT  0x4        /* CMD Time Out Status */
+#define          DAT_TIMEOUT_STAT  0x8        /* Data Time Out status */
+#define          TX_UNDERRUN_STAT  0x10       /* Transmit Underrun Status */
+#define           RX_OVERRUN_STAT  0x20       /* Receive Overrun Status */
+#define         CMD_RESP_END_STAT  0x40       /* CMD Response End Status */
+#define             CMD_SENT_STAT  0x80       /* CMD Sent Status */
+#define              DAT_END_STAT  0x100      /* Data End Status */
+#define        START_BIT_ERR_STAT  0x200      /* Start Bit Error Status */
+#define          DAT_BLK_END_STAT  0x400      /* Data Block End Status */
+
+/* Bit masks for SDH_MASK0 */
+#define         CMD_CRC_FAIL_MASK  0x1        /* CMD CRC Fail Mask */
+#define         DAT_CRC_FAIL_MASK  0x2        /* Data CRC Fail Mask */
+#define          CMD_TIMEOUT_MASK  0x4        /* CMD Time Out Mask */
+#define          DAT_TIMEOUT_MASK  0x8        /* Data Time Out Mask */
+#define          TX_UNDERRUN_MASK  0x10       /* Transmit Underrun Mask */
+#define           RX_OVERRUN_MASK  0x20       /* Receive Overrun Mask */
+#define         CMD_RESP_END_MASK  0x40       /* CMD Response End Mask */
+#define             CMD_SENT_MASK  0x80       /* CMD Sent Mask */
+#define              DAT_END_MASK  0x100      /* Data End Mask */
+#define        START_BIT_ERR_MASK  0x200      /* Start Bit Error Mask */
+#define          DAT_BLK_END_MASK  0x400      /* Data Block End Mask */
+#define              CMD_ACT_MASK  0x800      /* CMD Active Mask */
+#define               TX_ACT_MASK  0x1000     /* Transmit Active Mask */
+#define               RX_ACT_MASK  0x2000     /* Receive Active Mask */
+#define         TX_FIFO_STAT_MASK  0x4000     /* Transmit FIFO Status Mask */
+#define         RX_FIFO_STAT_MASK  0x8000     /* Receive FIFO Status Mask */
+#define         TX_FIFO_FULL_MASK  0x10000    /* Transmit FIFO Full Mask */
+#define         RX_FIFO_FULL_MASK  0x20000    /* Receive FIFO Full Mask */
+#define         TX_FIFO_ZERO_MASK  0x40000    /* Transmit FIFO Empty Mask */
+#define          RX_DAT_ZERO_MASK  0x80000    /* Receive FIFO Empty Mask */
+#define           TX_DAT_RDY_MASK  0x100000   /* Transmit Data Available Mask */
+#define          RX_FIFO_RDY_MASK  0x200000   /* Receive Data Available Mask */
+
+/* Bit masks for SDH_FIFO_CNT */
+#define                FIFO_COUNT  0x7fff     /* FIFO Count */
+
+/* Bit masks for SDH_E_STATUS */
+#define              SDIO_INT_DET  0x2        /* SDIO Int Detected */
+#define               SD_CARD_DET  0x10       /* SD Card Detect */
+
+/* Bit masks for SDH_E_MASK */
+#define                  SDIO_MSK  0x2        /* Mask SDIO Int Detected */
+#define                   SCD_MSK  0x40       /* Mask Card Detect */
+
+/* Bit masks for SDH_CFG */
+#define                   CLKS_EN  0x1        /* Clocks Enable */
+#define                      SD4E  0x4        /* SDIO 4-Bit Enable */
+#define                       MWE  0x8        /* Moving Window Enable */
+#define                    SD_RST  0x10       /* SDMMC Reset */
+#define                 PUP_SDDAT  0x20       /* Pull-up SD_DAT */
+#define                PUP_SDDAT3  0x40       /* Pull-up SD_DAT3 */
+#define                 PD_SDDAT3  0x80       /* Pull-down SD_DAT3 */
+
+/* Bit masks for SDH_RD_WAIT_EN */
+#define                       RWR  0x1        /* Read Wait Request */
+
+#endif
diff --git a/include/asm-blackfin/mmc.h b/include/asm-blackfin/mmc.h
new file mode 100644
index 0000000..aa2ac95
--- /dev/null
+++ b/include/asm-blackfin/mmc.h
@@ -0,0 +1 @@
+#include <asm-avr32/arch-at32ap700x/mmc.h>