Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / include / linux / platform_data / mmc-sdhci-s3c.h

diff --git a/kernel/include/linux/platform_data/mmc-sdhci-s3c.h b/kernel/include/linux/platform_data/mmc-sdhci-s3c.h
new file mode 100644 (file)
index 0000000..249f023
--- /dev/null
+++ b/kernel/include/linux/platform_data/mmc-sdhci-s3c.h
@@ -0,0 +1,56 @@
+#ifndef __PLATFORM_DATA_SDHCI_S3C_H
+#define __PLATFORM_DATA_SDHCI_S3C_H
+
+struct platform_device;
+
+enum cd_types {
+       S3C_SDHCI_CD_INTERNAL,  /* use mmc internal CD line */
+       S3C_SDHCI_CD_EXTERNAL,  /* use external callback */
+       S3C_SDHCI_CD_GPIO,      /* use external gpio pin for CD line */
+       S3C_SDHCI_CD_NONE,      /* no CD line, use polling to detect card */
+       S3C_SDHCI_CD_PERMANENT, /* no CD line, card permanently wired to host */
+};
+
+/**
+ * struct s3c_sdhci_platdata() - Platform device data for Samsung SDHCI
+ * @max_width: The maximum number of data bits supported.
+ * @host_caps: Standard MMC host capabilities bit field.
+ * @host_caps2: The second standard MMC host capabilities bit field.
+ * @cd_type: Type of Card Detection method (see cd_types enum above)
+ * @ext_cd_init: Initialize external card detect subsystem. Called on
+ *              sdhci-s3c driver probe when cd_type == S3C_SDHCI_CD_EXTERNAL.
+ *              notify_func argument is a callback to the sdhci-s3c driver
+ *              that triggers the card detection event. Callback arguments:
+ *              dev is pointer to platform device of the host controller,
+ *              state is new state of the card (0 - removed, 1 - inserted).
+ * @ext_cd_cleanup: Cleanup external card detect subsystem. Called on
+ *              sdhci-s3c driver remove when cd_type == S3C_SDHCI_CD_EXTERNAL.
+ *              notify_func argument is the same callback as for ext_cd_init.
+ * @ext_cd_gpio: gpio pin used for external CD line, valid only if
+ *              cd_type == S3C_SDHCI_CD_GPIO
+ * @ext_cd_gpio_invert: invert values for external CD gpio line
+ * @cfg_gpio: Configure the GPIO for a specific card bit-width
+ *
+ * Initialisation data specific to either the machine or the platform
+ * for the device driver to use or call-back when configuring gpio or
+ * card speed information.
+*/
+struct s3c_sdhci_platdata {
+       unsigned int    max_width;
+       unsigned int    host_caps;
+       unsigned int    host_caps2;
+       unsigned int    pm_caps;
+       enum cd_types   cd_type;
+
+       int             ext_cd_gpio;
+       bool            ext_cd_gpio_invert;
+       int     (*ext_cd_init)(void (*notify_func)(struct platform_device *,
+                                                  int state));
+       int     (*ext_cd_cleanup)(void (*notify_func)(struct platform_device *,
+                                                     int state));
+
+       void    (*cfg_gpio)(struct platform_device *dev, int width);
+};
+
+
+#endif /* __PLATFORM_DATA_SDHCI_S3C_H */