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| author |   Thomas Abraham <thomas.abraham@linaro.org> | 2012-09-17 18:16:42 +0000 |
|---|---|---|
| committer |   Chris Ball <cjb@laptop.org> | 2012-10-03 10:05:19 -0400 |
| commit | 800d78bfccb3d38116abfda2a5b9c8afdbd5ea21 (patch) | |
| tree | 6f4d8375a86319adc67a0154baed8bd6253073a8 /drivers/mmc/host/dw_mmc.h | |
| parent | mmc: dw_mmc: prepare functions in dw_mmc-pltfm for reuse (diff) | |
| download | linux-dev-800d78bfccb3d38116abfda2a5b9c8afdbd5ea21.tar.xz linux-dev-800d78bfccb3d38116abfda2a5b9c8afdbd5ea21.zip | |
mmc: dw_mmc: add support for implementation specific callbacks
The core dw-mshc controller driver can let platform specific
implementations of the dw-mshc controller to control the hardware
as required by such implementations. This is acheived by invoking
implementation specific (optional) callbacks. Define the list of
callbacks supported the add invocation points for the same.
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/host/dw_mmc.h')
| -rw-r--r-- | drivers/mmc/host/dw_mmc.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h index 15c27e17c23f..53b8fd987e47 100644 --- a/drivers/mmc/host/dw_mmc.h +++ b/drivers/mmc/host/dw_mmc.h @@ -182,4 +182,28 @@ extern int dw_mci_suspend(struct dw_mci *host); extern int dw_mci_resume(struct dw_mci *host); #endif +/** + * dw_mci driver data - dw-mshc implementation specific driver data. + * @caps: mmc subsystem specified capabilities of the controller(s). + * @init: early implementation specific initialization. + * @setup_clock: implementation specific clock configuration. + * @prepare_command: handle CMD register extensions. + * @set_ios: handle bus specific extensions. + * @parse_dt: parse implementation specific device tree properties. + * @setup_bus: initialize io-interface + * + * Provide controller implementation specific extensions. The usage of this + * data structure is fully optional and usage of each member in this structure + * is optional as well. + */ +struct dw_mci_drv_data { + unsigned long *caps; + int (*init)(struct dw_mci *host); + int (*setup_clock)(struct dw_mci *host); + void (*prepare_command)(struct dw_mci *host, u32 *cmdr); + void (*set_ios)(struct dw_mci *host, struct mmc_ios *ios); + int (*parse_dt)(struct dw_mci *host); + int (*setup_bus)(struct dw_mci *host, + struct device_node *slot_np, u8 bus_width); +}; #endif /* _DW_MMC_H_ */ |