mmc: Driver for CB710/720 memory card reader (MMC part)

The code is divided in two parts. There is a virtual 'bus' driver
that handles PCI device and registers three new devices one per card
reader type. The other driver handles SD/MMC part of the reader.

Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: Pierre Ossman <pierre@ossman.eu>

1 files changed, 104 insertions, 0 deletions

diff --git a/drivers/mmc/host/cb710-mmc.h b/drivers/mmc/host/cb710-mmc.h
new file mode 100644
index 000000000000..e845c776bdd7
--- /dev/null
+++ b/drivers/mmc/host/cb710-mmc.h
@@ -0,0 +1,104 @@
+/*
+ *  cb710/cb710-mmc.h
+ *
+ *  Copyright by Michał Mirosław, 2008-2009
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef LINUX_CB710_MMC_H
+#define LINUX_CB710_MMC_H
+
+#include <linux/cb710.h>
+
+/* per-MMC-reader structure */
+struct cb710_mmc_reader {
+        struct tasklet_struct finish_req_tasklet;
+        struct mmc_request *mrq;
+        spinlock_t irq_lock;
+        unsigned char last_power_mode;
+};
+
+/* some device struct walking */
+
+static inline struct mmc_host *cb710_slot_to_mmc(struct cb710_slot *slot)
+{
+        return dev_get_drvdata(&slot->pdev.dev);
+}
+
+static inline struct cb710_slot *cb710_mmc_to_slot(struct mmc_host *mmc)
+{
+        struct platform_device *pdev = container_of(mmc_dev(mmc),
+                struct platform_device, dev);
+        return cb710_pdev_to_slot(pdev);
+}
+
+/* registers (this might be all wrong ;) */
+
+#define CB710_MMC_DATA_PORT             0x00
+
+#define CB710_MMC_CONFIG_PORT           0x04
+#define CB710_MMC_CONFIG0_PORT          0x04
+#define CB710_MMC_CONFIG1_PORT          0x05
+#define   CB710_MMC_C1_4BIT_DATA_BUS            0x40
+#define CB710_MMC_CONFIG2_PORT          0x06
+#define   CB710_MMC_C2_READ_PIO_SIZE_MASK       0x0F    /* N-1 */
+#define CB710_MMC_CONFIG3_PORT          0x07
+
+#define CB710_MMC_CONFIGB_PORT          0x08
+
+#define CB710_MMC_IRQ_ENABLE_PORT       0x0C
+#define   CB710_MMC_IE_TEST_MASK                0x00BF
+#define   CB710_MMC_IE_CARD_INSERTION_STATUS    0x1000
+#define   CB710_MMC_IE_IRQ_ENABLE               0x8000
+#define   CB710_MMC_IE_CISTATUS_MASK            \
+                (CB710_MMC_IE_CARD_INSERTION_STATUS|CB710_MMC_IE_IRQ_ENABLE)
+
+#define CB710_MMC_STATUS_PORT           0x10
+#define   CB710_MMC_STATUS_ERROR_EVENTS         0x60FF
+#define CB710_MMC_STATUS0_PORT          0x10
+#define   CB710_MMC_S0_FIFO_UNDERFLOW           0x40
+#define CB710_MMC_STATUS1_PORT          0x11
+#define   CB710_MMC_S1_COMMAND_SENT             0x01
+#define   CB710_MMC_S1_DATA_TRANSFER_DONE       0x02
+#define   CB710_MMC_S1_PIO_TRANSFER_DONE        0x04
+#define   CB710_MMC_S1_CARD_CHANGED             0x10
+#define   CB710_MMC_S1_RESET                    0x20
+#define CB710_MMC_STATUS2_PORT          0x12
+#define   CB710_MMC_S2_FIFO_READY               0x01
+#define   CB710_MMC_S2_FIFO_EMPTY               0x02
+#define   CB710_MMC_S2_BUSY_10                  0x10
+#define   CB710_MMC_S2_BUSY_20                  0x20
+#define CB710_MMC_STATUS3_PORT          0x13
+#define   CB710_MMC_S3_CARD_DETECTED            0x02
+#define   CB710_MMC_S3_WRITE_PROTECTED          0x04
+
+#define CB710_MMC_CMD_TYPE_PORT         0x14
+#define   CB710_MMC_RSP_TYPE_MASK               0x0007
+#define     CB710_MMC_RSP_R1                    (0)
+#define     CB710_MMC_RSP_136                   (5)
+#define     CB710_MMC_RSP_NO_CRC                (2)
+#define   CB710_MMC_RSP_PRESENT_MASK            0x0018
+#define     CB710_MMC_RSP_NONE                  (0 << 3)
+#define     CB710_MMC_RSP_PRESENT               (1 << 3)
+#define     CB710_MMC_RSP_PRESENT_X             (2 << 3)
+#define   CB710_MMC_CMD_TYPE_MASK               0x0060
+#define     CB710_MMC_CMD_BC                    (0 << 5)
+#define     CB710_MMC_CMD_BCR                   (1 << 5)
+#define     CB710_MMC_CMD_AC                    (2 << 5)
+#define     CB710_MMC_CMD_ADTC                  (3 << 5)
+#define   CB710_MMC_DATA_READ                   0x0080
+#define   CB710_MMC_CMD_CODE_MASK               0x3F00
+#define   CB710_MMC_CMD_CODE_SHIFT              8
+#define   CB710_MMC_IS_APP_CMD                  0x4000
+#define   CB710_MMC_RSP_BUSY                    0x8000
+
+#define CB710_MMC_CMD_PARAM_PORT        0x18
+#define CB710_MMC_TRANSFER_SIZE_PORT    0x1C
+#define CB710_MMC_RESPONSE0_PORT        0x20
+#define CB710_MMC_RESPONSE1_PORT        0x24
+#define CB710_MMC_RESPONSE2_PORT        0x28
+#define CB710_MMC_RESPONSE3_PORT        0x2C
+
+#endif /* LINUX_CB710_MMC_H */