Added sd driver for bcm2835 (Raspberry PI)

Replaced defines according to sdhci.h

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 73 insertions, 0 deletions

diff --git a/drivers/mci/mci-bcm2835.h b/drivers/mci/mci-bcm2835.h
new file mode 100644
index 0000000000..4158a18065
--- /dev/null
+++ b/drivers/mci/mci-bcm2835.h
@@ -0,0 +1,73 @@
+#define BCM2835_MCI_SLOTISR_VER			0xfc
+
+#define MIN_FREQ 400000
+#define BLOCK_SHIFT			16
+
+#define SDHCI_SPEC_100	0
+#define SDHCI_SPEC_200	1
+#define SDHCI_SPEC_300	2
+
+#define CONTROL0_HISPEED	(1 << 2)
+#define CONTROL0_4DATA		(1 << 1)
+
+#define CONTROL1_DATARST	(1 << 26)
+#define CONTROL1_CMDRST		(1 << 25)
+#define CONTROL1_HOSTRST	(1 << 24)
+#define CONTROL1_CLKSELPROG	(1 << 5)
+#define CONTROL1_CLKENA		(1 << 2)
+#define CONTROL1_CLK_STABLE	(1 << 1)
+#define CONTROL1_INTCLKENA	(1 << 0)
+#define CONTROL1_CLKMSB		6
+#define CONTROL1_CLKLSB		8
+#define CONTROL1_TIMEOUT	(0x0E << 16)
+
+#define MAX_CLK_DIVIDER_V3	2046
+#define MAX_CLK_DIVIDER_V2	256
+
+/*this is only for mbox comms*/
+#define BCM2835_MBOX_PHYSADDR				0x2000b880
+#define BCM2835_MBOX_TAG_GET_CLOCK_RATE		0x00030002
+#define BCM2835_MBOX_CLOCK_ID_EMMC			1
+#define BCM2835_MBOX_STATUS_WR_FULL			0x80000000
+#define BCM2835_MBOX_STATUS_RD_EMPTY		0x40000000
+#define BCM2835_MBOX_PROP_CHAN				8
+#define BCM2835_MBOX_TAG_VAL_LEN_RESPONSE	0x80000000
+
+struct bcm2835_mbox_regs {
+	u32 read;
+	u32 rsvd0[5];
+	u32 status;
+	u32 config;
+	u32 write;
+};
+
+
+struct bcm2835_mbox_hdr {
+	u32 buf_size;
+	u32 code;
+};
+
+struct bcm2835_mbox_tag_hdr {
+	u32 tag;
+	u32 val_buf_size;
+	u32 val_len;
+};
+
+struct bcm2835_mbox_tag_get_clock_rate {
+	struct bcm2835_mbox_tag_hdr tag_hdr;
+	union {
+		struct {
+			u32 clock_id;
+		} req;
+		struct {
+			u32 clock_id;
+			u32 rate_hz;
+		} resp;
+	} body;
+};
+
+struct msg_get_clock_rate {
+	struct bcm2835_mbox_hdr hdr;
+	struct bcm2835_mbox_tag_get_clock_rate get_clock_rate;
+	u32 end_tag;
+};