#ifndef LINUX_MMC_HOST_H
#define LINUX_MMC_HOST_H
-#include <linux/mmc/mmc.h>
+#include <linux/leds.h>
+
+#include <linux/mmc/core.h>
struct mmc_ios {
unsigned int clock; /* clock rate */
unsigned short vdd;
-#define MMC_VDD_150 0
-#define MMC_VDD_155 1
-#define MMC_VDD_160 2
-#define MMC_VDD_165 3
-#define MMC_VDD_170 4
-#define MMC_VDD_180 5
-#define MMC_VDD_190 6
-#define MMC_VDD_200 7
-#define MMC_VDD_210 8
-#define MMC_VDD_220 9
-#define MMC_VDD_230 10
-#define MMC_VDD_240 11
-#define MMC_VDD_250 12
-#define MMC_VDD_260 13
-#define MMC_VDD_270 14
-#define MMC_VDD_280 15
-#define MMC_VDD_290 16
-#define MMC_VDD_300 17
-#define MMC_VDD_310 18
-#define MMC_VDD_320 19
-#define MMC_VDD_330 20
-#define MMC_VDD_340 21
-#define MMC_VDD_350 22
-#define MMC_VDD_360 23
+/* vdd stores the bit number of the selected voltage range from below. */
unsigned char bus_mode; /* command output mode */
#define MMC_BUS_WIDTH_1 0
#define MMC_BUS_WIDTH_4 2
+
+ unsigned char timing; /* timing specification used */
+
+#define MMC_TIMING_LEGACY 0
+#define MMC_TIMING_MMC_HS 1
+#define MMC_TIMING_SD_HS 2
};
struct mmc_host_ops {
void (*request)(struct mmc_host *host, struct mmc_request *req);
+ /*
+ * Avoid calling these three functions too often or in a "fast path",
+ * since underlaying controller might implement them in an expensive
+ * and/or slow way.
+ *
+ * Also note that these functions might sleep, so don't call them
+ * in the atomic contexts!
+ *
+ * Return values for the get_ro callback should be:
+ * 0 for a read/write card
+ * 1 for a read-only card
+ * -ENOSYS when not supported (equal to NULL callback)
+ * or a negative errno value when something bad happened
+ *
+ * Return values for the get_ro callback should be:
+ * 0 for a absent card
+ * 1 for a present card
+ * -ENOSYS when not supported (equal to NULL callback)
+ * or a negative errno value when something bad happened
+ */
void (*set_ios)(struct mmc_host *host, struct mmc_ios *ios);
int (*get_ro)(struct mmc_host *host);
+ int (*get_cd)(struct mmc_host *host);
+
+ void (*enable_sdio_irq)(struct mmc_host *host, int enable);
};
struct mmc_card;
unsigned int f_max;
u32 ocr_avail;
+#define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */
+#define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */
+#define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */
+#define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */
+#define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */
+#define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */
+#define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */
+#define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */
+#define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */
+#define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */
+#define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */
+#define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */
+#define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */
+#define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */
+#define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */
+#define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */
+#define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */
+
unsigned long caps; /* Host capabilities */
#define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */
-#define MMC_CAP_MULTIWRITE (1 << 1) /* Can accurately report bytes sent to card on error */
-#define MMC_CAP_BYTEBLOCK (1 << 2) /* Can do non-log2 block sizes */
+#define MMC_CAP_MMC_HIGHSPEED (1 << 1) /* Can do MMC high-speed timing */
+#define MMC_CAP_SD_HIGHSPEED (1 << 2) /* Can do SD high-speed timing */
+#define MMC_CAP_SDIO_IRQ (1 << 3) /* Can signal pending SDIO IRQs */
+#define MMC_CAP_SPI (1 << 4) /* Talks only SPI protocols */
+#define MMC_CAP_NEEDS_POLL (1 << 5) /* Needs polling for card-detection */
/* host specific block data */
unsigned int max_seg_size; /* see blk_queue_max_segment_size */
unsigned short max_hw_segs; /* see blk_queue_max_hw_segments */
unsigned short max_phys_segs; /* see blk_queue_max_phys_segments */
- unsigned short max_sectors; /* see blk_queue_max_sectors */
unsigned short unused;
+ unsigned int max_req_size; /* maximum number of bytes in one req */
unsigned int max_blk_size; /* maximum size of one mmc block */
+ unsigned int max_blk_count; /* maximum number of blocks in one req */
/* private data */
+ spinlock_t lock; /* lock for claim and bus ops */
+
struct mmc_ios ios; /* current io bus settings */
u32 ocr; /* the current OCR setting */
- unsigned int mode; /* current card mode of host */
-#define MMC_MODE_MMC 0
-#define MMC_MODE_SD 1
+ /* group bitfields together to minimize padding */
+ unsigned int use_spi_crc:1;
+ unsigned int claimed:1; /* host exclusively claimed */
+ unsigned int bus_dead:1; /* bus has been released */
+#ifdef CONFIG_MMC_DEBUG
+ unsigned int removed:1; /* host is being removed */
+#endif
- struct list_head cards; /* devices attached to this host */
+ struct mmc_card *card; /* device attached to this host */
wait_queue_head_t wq;
- spinlock_t lock; /* claimed lock */
- unsigned int claimed:1; /* host exclusively claimed */
-
- struct mmc_card *card_selected; /* the selected MMC card */
struct delayed_work detect;
+ const struct mmc_bus_ops *bus_ops; /* current bus driver */
+ unsigned int bus_refs; /* reference counter */
+
+ unsigned int sdio_irqs;
+ struct task_struct *sdio_irq_thread;
+ atomic_t sdio_irq_thread_abort;
+
+#ifdef CONFIG_LEDS_TRIGGERS
+ struct led_trigger *led; /* activity led */
+#endif
+
+ struct dentry *debugfs_root;
+
unsigned long private[0] ____cacheline_aligned;
};
return (void *)host->private;
}
+#define mmc_host_is_spi(host) ((host)->caps & MMC_CAP_SPI)
+
#define mmc_dev(x) ((x)->parent)
#define mmc_classdev(x) (&(x)->class_dev)
#define mmc_hostname(x) ((x)->class_dev.bus_id)
extern void mmc_detect_change(struct mmc_host *, unsigned long delay);
extern void mmc_request_done(struct mmc_host *, struct mmc_request *);
+static inline void mmc_signal_sdio_irq(struct mmc_host *host)
+{
+ host->ops->enable_sdio_irq(host, 0);
+ wake_up_process(host->sdio_irq_thread);
+}
+
#endif
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