init android origin source code

1 files changed, 469 insertions, 0 deletions

diff --git a/ANDROID_3.4.5/include/linux/mmc/host.h b/ANDROID_3.4.5/include/linux/mmc/host.h
new file mode 100644
index 00000000..5674504e
--- /dev/null
+++ b/ANDROID_3.4.5/include/linux/mmc/host.h
@@ -0,0 +1,469 @@
+/*
+ *  linux/include/linux/mmc/host.h
+ *
+ * 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.
+ *
+ *  Host driver specific definitions.
+ */
+#ifndef LINUX_MMC_HOST_H
+#define LINUX_MMC_HOST_H
+
+#include <linux/leds.h>
+#include <linux/sched.h>
+#include <linux/device.h>
+#include <linux/fault-inject.h>
+#include <linux/wakelock.h>
+
+#include <linux/mmc/core.h>
+#include <linux/mmc/pm.h>
+
+struct mmc_ios {
+	unsigned int	clock;			/* clock rate */
+	unsigned short	vdd;
+
+/* vdd stores the bit number of the selected voltage range from below. */
+
+	unsigned char	bus_mode;		/* command output mode */
+
+#define MMC_BUSMODE_OPENDRAIN	1
+#define MMC_BUSMODE_PUSHPULL	2
+
+	unsigned char	chip_select;		/* SPI chip select */
+
+#define MMC_CS_DONTCARE		0
+#define MMC_CS_HIGH		1
+#define MMC_CS_LOW		2
+
+	unsigned char	power_mode;		/* power supply mode */
+
+#define MMC_POWER_OFF		0
+#define MMC_POWER_UP		1
+#define MMC_POWER_ON		2
+
+	unsigned char	bus_width;		/* data bus width */
+
+#define MMC_BUS_WIDTH_1		0
+#define MMC_BUS_WIDTH_4		2
+#define MMC_BUS_WIDTH_8		3
+
+	unsigned char	timing;			/* timing specification used */
+
+#define MMC_TIMING_LEGACY	0
+#define MMC_TIMING_MMC_HS	1
+#define MMC_TIMING_SD_HS	2
+#define MMC_TIMING_UHS_SDR12	MMC_TIMING_LEGACY
+#define MMC_TIMING_UHS_SDR25	MMC_TIMING_SD_HS
+#define MMC_TIMING_UHS_SDR50	3
+#define MMC_TIMING_UHS_SDR104	4
+#define MMC_TIMING_UHS_DDR50	5
+#define MMC_TIMING_MMC_HS200	6
+
+#define MMC_SDR_MODE		0
+#define MMC_1_2V_DDR_MODE	1
+#define MMC_1_8V_DDR_MODE	2
+#define MMC_1_2V_SDR_MODE	3
+#define MMC_1_8V_SDR_MODE	4
+
+	unsigned char	signal_voltage;		/* signalling voltage (1.8V or 3.3V) */
+
+#define MMC_SIGNAL_VOLTAGE_330	0
+#define MMC_SIGNAL_VOLTAGE_180	1
+#define MMC_SIGNAL_VOLTAGE_120	2
+
+	unsigned char	drv_type;		/* driver type (A, B, C, D) */
+
+#define MMC_SET_DRIVER_TYPE_B	0
+#define MMC_SET_DRIVER_TYPE_A	1
+#define MMC_SET_DRIVER_TYPE_C	2
+#define MMC_SET_DRIVER_TYPE_D	3
+};
+
+struct mmc_host_ops {
+	/*
+	 * 'enable' is called when the host is claimed and 'disable' is called
+	 * when the host is released. 'enable' and 'disable' are deprecated.
+	 */
+	int (*enable)(struct mmc_host *host);
+	int (*disable)(struct mmc_host *host);
+	/*
+	 * It is optional for the host to implement pre_req and post_req in
+	 * order to support double buffering of requests (prepare one
+	 * request while another request is active).
+	 * pre_req() must always be followed by a post_req().
+	 * To undo a call made to pre_req(), call post_req() with
+	 * a nonzero err condition.
+	 */
+	void	(*post_req)(struct mmc_host *host, struct mmc_request *req,
+			    int err);
+	void	(*pre_req)(struct mmc_host *host, struct mmc_request *req,
+			   bool is_first_req);
+	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_cd 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);
+
+	/* optional callback for HC quirks */
+	void	(*init_card)(struct mmc_host *host, struct mmc_card *card);
+
+	int	(*start_signal_voltage_switch)(struct mmc_host *host, struct mmc_ios *ios);
+
+	/* The tuning command opcode value is different for SD and eMMC cards */
+	int	(*execute_tuning)(struct mmc_host *host, u32 opcode);
+	void	(*enable_preset_value)(struct mmc_host *host, bool enable);
+	int	(*select_drive_strength)(unsigned int max_dtr, int host_drv, int card_drv);
+	void	(*hw_reset)(struct mmc_host *host);
+};
+
+struct mmc_card;
+struct device;
+
+struct mmc_async_req {
+	/* active mmc request */
+	struct mmc_request	*mrq;
+	/*
+	 * Check error status of completed mmc request.
+	 * Returns 0 if success otherwise non zero.
+	 */
+	int (*err_check) (struct mmc_card *, struct mmc_async_req *);
+};
+
+struct mmc_hotplug {
+	unsigned int irq;
+	void *handler_priv;
+};
+
+struct mmc_host {
+	struct device		*parent;
+	struct device		class_dev;
+	int			index;
+	const struct mmc_host_ops *ops;
+	unsigned int		f_min;
+	unsigned int		f_max;
+	unsigned int		f_init;
+	u32			ocr_avail;
+	u32			ocr_avail_sdio;	/* SDIO-specific OCR */
+	u32			ocr_avail_sd;	/* SD-specific OCR */
+	u32			ocr_avail_mmc;	/* MMC-specific OCR */
+	struct notifier_block	pm_notify;
+
+#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_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 */
+#define MMC_CAP_8_BIT_DATA	(1 << 6)	/* Can the host do 8 bit transfers */
+
+#define MMC_CAP_NONREMOVABLE	(1 << 8)	/* Nonremovable e.g. eMMC */
+#define MMC_CAP_WAIT_WHILE_BUSY	(1 << 9)	/* Waits while card is busy */
+#define MMC_CAP_ERASE		(1 << 10)	/* Allow erase/trim commands */
+#define MMC_CAP_1_8V_DDR	(1 << 11)	/* can support */
+						/* DDR mode at 1.8V */
+#define MMC_CAP_1_2V_DDR	(1 << 12)	/* can support */
+						/* DDR mode at 1.2V */
+#define MMC_CAP_POWER_OFF_CARD	(1 << 13)	/* Can power off after boot */
+#define MMC_CAP_BUS_WIDTH_TEST	(1 << 14)	/* CMD14/CMD19 bus width ok */
+#define MMC_CAP_UHS_SDR12	(1 << 15)	/* Host supports UHS SDR12 mode */
+#define MMC_CAP_UHS_SDR25	(1 << 16)	/* Host supports UHS SDR25 mode */
+#define MMC_CAP_UHS_SDR50	(1 << 17)	/* Host supports UHS SDR50 mode */
+#define MMC_CAP_UHS_SDR104	(1 << 18)	/* Host supports UHS SDR104 mode */
+#define MMC_CAP_UHS_DDR50	(1 << 19)	/* Host supports UHS DDR50 mode */
+#define MMC_CAP_SET_XPC_330	(1 << 20)	/* Host supports >150mA current at 3.3V */
+#define MMC_CAP_SET_XPC_300	(1 << 21)	/* Host supports >150mA current at 3.0V */
+#define MMC_CAP_SET_XPC_180	(1 << 22)	/* Host supports >150mA current at 1.8V */
+#define MMC_CAP_DRIVER_TYPE_A	(1 << 23)	/* Host supports Driver Type A */
+#define MMC_CAP_DRIVER_TYPE_C	(1 << 24)	/* Host supports Driver Type C */
+#define MMC_CAP_DRIVER_TYPE_D	(1 << 25)	/* Host supports Driver Type D */
+#define MMC_CAP_MAX_CURRENT_200	(1 << 26)	/* Host max current limit is 200mA */
+#define MMC_CAP_MAX_CURRENT_400	(1 << 27)	/* Host max current limit is 400mA */
+#define MMC_CAP_MAX_CURRENT_600	(1 << 28)	/* Host max current limit is 600mA */
+#define MMC_CAP_MAX_CURRENT_800	(1 << 29)	/* Host max current limit is 800mA */
+#define MMC_CAP_CMD23		(1 << 30)	/* CMD23 supported. */
+#define MMC_CAP_HW_RESET	(1 << 31)	/* Hardware reset */
+
+	unsigned int		caps2;		/* More host capabilities */
+
+#define MMC_CAP2_BOOTPART_NOACC	(1 << 0)	/* Boot partition no access */
+#define MMC_CAP2_CACHE_CTRL	(1 << 1)	/* Allow cache control */
+#define MMC_CAP2_POWEROFF_NOTIFY (1 << 2)	/* Notify poweroff supported */
+#define MMC_CAP2_NO_MULTI_READ	(1 << 3)	/* Multiblock reads don't work */
+#define MMC_CAP2_NO_SLEEP_CMD	(1 << 4)	/* Don't allow sleep command */
+#define MMC_CAP2_HS200_1_8V_SDR	(1 << 5)        /* can support */
+#define MMC_CAP2_HS200_1_2V_SDR	(1 << 6)        /* can support */
+#define MMC_CAP2_HS200		(MMC_CAP2_HS200_1_8V_SDR | \
+				 MMC_CAP2_HS200_1_2V_SDR)
+#define MMC_CAP2_BROKEN_VOLTAGE	(1 << 7)	/* Use the broken voltage */
+#define MMC_CAP2_DETECT_ON_ERR	(1 << 8)	/* On I/O err check card removal */
+#define MMC_CAP2_HC_ERASE_SZ	(1 << 9)	/* High-capacity erase size */
+
+	mmc_pm_flag_t		pm_caps;	/* supported pm features */
+	unsigned int        power_notify_type;
+#define MMC_HOST_PW_NOTIFY_NONE		0
+#define MMC_HOST_PW_NOTIFY_SHORT	1
+#define MMC_HOST_PW_NOTIFY_LONG		2
+
+#ifdef CONFIG_MMC_CLKGATE
+	int			clk_requests;	/* internal reference counter */
+	unsigned int		clk_delay;	/* number of MCI clk hold cycles */
+	bool			clk_gated;	/* clock gated */
+	struct delayed_work	clk_gate_work; /* delayed clock gate */
+	unsigned int		clk_old;	/* old clock value cache */
+	spinlock_t		clk_lock;	/* lock for clk fields */
+	struct mutex		clk_gate_mutex;	/* mutex for clock gating */
+	struct device_attribute clkgate_delay_attr;
+	unsigned long           clkgate_delay;
+#endif
+
+	/* host specific block data */
+	unsigned int		max_seg_size;	/* see blk_queue_max_segment_size */
+	unsigned short		max_segs;	/* see blk_queue_max_segments */
+	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 */
+	unsigned int		max_discard_to;	/* max. discard timeout in ms */
+
+	/* 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 */
+
+	/* 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
+
+	int			rescan_disable;	/* disable card detection */
+
+	struct mmc_card		*card;		/* device attached to this host */
+
+	wait_queue_head_t	wq;
+	struct task_struct	*claimer;	/* task that has host claimed */
+	int			claim_cnt;	/* "claim" nesting count */
+
+	struct delayed_work	detect;
+	struct wake_lock	detect_wake_lock;
+	int			detect_change;	/* card detect flag */
+	struct mmc_hotplug	hotplug;
+
+	const struct mmc_bus_ops *bus_ops;	/* current bus driver */
+	unsigned int		bus_refs;	/* reference counter */
+
+	unsigned int		bus_resume_flags;
+#define MMC_BUSRESUME_MANUAL_RESUME	(1 << 0)
+#define MMC_BUSRESUME_NEEDS_RESUME	(1 << 1)
+
+	unsigned int		sdio_irqs;
+	struct task_struct	*sdio_irq_thread;
+	bool			sdio_irq_pending;
+	atomic_t		sdio_irq_thread_abort;
+
+	mmc_pm_flag_t		pm_flags;	/* requested pm features */
+
+#ifdef CONFIG_LEDS_TRIGGERS
+	struct led_trigger	*led;		/* activity led */
+#endif
+
+#ifdef CONFIG_REGULATOR
+	bool			regulator_enabled; /* regulator state */
+#endif
+
+	struct dentry		*debugfs_root;
+
+	struct mmc_async_req	*areq;		/* active async req */
+
+#ifdef CONFIG_FAIL_MMC_REQUEST
+	struct fault_attr	fail_mmc_request;
+#endif
+
+	unsigned int		actual_clock;	/* Actual HC clock rate */
+
+#ifdef CONFIG_MMC_EMBEDDED_SDIO
+	struct {
+		struct sdio_cis			*cis;
+		struct sdio_cccr		*cccr;
+		struct sdio_embedded_func	*funcs;
+		int				num_funcs;
+	} embedded_sdio_data;
+#endif
+
+	unsigned long		private[0] ____cacheline_aligned;
+};
+
+extern struct mmc_host *mmc_alloc_host(int extra, struct device *);
+extern int mmc_add_host(struct mmc_host *);
+extern void mmc_remove_host(struct mmc_host *);
+extern void mmc_free_host(struct mmc_host *);
+
+#ifdef CONFIG_MMC_EMBEDDED_SDIO
+extern void mmc_set_embedded_sdio_data(struct mmc_host *host,
+				       struct sdio_cis *cis,
+				       struct sdio_cccr *cccr,
+				       struct sdio_embedded_func *funcs,
+				       int num_funcs);
+#endif
+
+static inline void *mmc_priv(struct mmc_host *host)
+{
+	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)	(dev_name(&(x)->class_dev))
+#define mmc_bus_needs_resume(host) ((host)->bus_resume_flags & MMC_BUSRESUME_NEEDS_RESUME)
+#define mmc_bus_manual_resume(host) ((host)->bus_resume_flags & MMC_BUSRESUME_MANUAL_RESUME)
+
+static inline void mmc_set_bus_resume_policy(struct mmc_host *host, int manual)
+{
+	if (manual)
+		host->bus_resume_flags |= MMC_BUSRESUME_MANUAL_RESUME;
+	else
+		host->bus_resume_flags &= ~MMC_BUSRESUME_MANUAL_RESUME;
+}
+
+extern int mmc_resume_bus(struct mmc_host *host);
+
+extern int mmc_suspend_host(struct mmc_host *);
+extern int mmc_resume_host(struct mmc_host *);
+
+extern int mmc_power_save_host(struct mmc_host *host);
+extern int mmc_power_restore_host(struct mmc_host *host);
+
+extern void mmc_detect_change(struct mmc_host *, unsigned long delay);
+extern void mmc_request_done(struct mmc_host *, struct mmc_request *);
+
+extern int mmc_cache_ctrl(struct mmc_host *, u8);
+
+static inline void mmc_signal_sdio_irq(struct mmc_host *host)
+{
+	host->ops->enable_sdio_irq(host, 0);
+	host->sdio_irq_pending = true;
+	wake_up_process(host->sdio_irq_thread);
+}
+
+struct regulator;
+
+#ifdef CONFIG_REGULATOR
+int mmc_regulator_get_ocrmask(struct regulator *supply);
+int mmc_regulator_set_ocr(struct mmc_host *mmc,
+			struct regulator *supply,
+			unsigned short vdd_bit);
+#else
+static inline int mmc_regulator_get_ocrmask(struct regulator *supply)
+{
+	return 0;
+}
+
+static inline int mmc_regulator_set_ocr(struct mmc_host *mmc,
+				 struct regulator *supply,
+				 unsigned short vdd_bit)
+{
+	return 0;
+}
+#endif
+
+int mmc_card_awake(struct mmc_host *host);
+int mmc_card_sleep(struct mmc_host *host);
+int mmc_card_can_sleep(struct mmc_host *host);
+
+int mmc_pm_notify(struct notifier_block *notify_block, unsigned long, void *);
+
+/* Module parameter */
+extern bool mmc_assume_removable;
+
+static inline int mmc_card_is_removable(struct mmc_host *host)
+{
+	return !(host->caps & MMC_CAP_NONREMOVABLE) && mmc_assume_removable;
+}
+
+static inline int mmc_card_keep_power(struct mmc_host *host)
+{
+	return host->pm_flags & MMC_PM_KEEP_POWER;
+}
+
+static inline int mmc_card_wake_sdio_irq(struct mmc_host *host)
+{
+	return host->pm_flags & MMC_PM_WAKE_SDIO_IRQ;
+}
+
+static inline int mmc_host_cmd23(struct mmc_host *host)
+{
+	return host->caps & MMC_CAP_CMD23;
+}
+
+static inline int mmc_boot_partition_access(struct mmc_host *host)
+{
+	return !(host->caps2 & MMC_CAP2_BOOTPART_NOACC);
+}
+
+#ifdef CONFIG_MMC_CLKGATE
+void mmc_host_clk_hold(struct mmc_host *host);
+void mmc_host_clk_release(struct mmc_host *host);
+unsigned int mmc_host_clk_rate(struct mmc_host *host);
+
+#else
+static inline void mmc_host_clk_hold(struct mmc_host *host)
+{
+}
+
+static inline void mmc_host_clk_release(struct mmc_host *host)
+{
+}
+
+static inline unsigned int mmc_host_clk_rate(struct mmc_host *host)
+{
+	return host->ios.clock;
+}
+#endif
+#endif /* LINUX_MMC_HOST_H */