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mmc: dw_mmc: modify DATA register offset

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In dw_mmc 2.40a spec, Data register's offset is changed.
Before we used Data register offset 0x100. but if somebody uses a
2.40a controller, we must use 0x200 for Data register.

This patch adds a version-id checking point and uses SDMMC_DATA(x)
instead of SDMMC_DATA.  It assumes 2.40a is the latest version.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Jaehoon Chung
2011-10-17 19:36:23 +09:00
committed by Chris Ball
parent c43fd77466
commit 4e0a5adf46
3 changed files with 61 additions and 22 deletions
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4
include/linux/mmc/dw_mmc.h
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@@ -72,6 +72,8 @@ struct mmc_data;
* rate and timeout calculations.
* @current_speed: Configured rate of the controller.
* @num_slots: Number of slots available.
* @verid: Denote Version ID.
* @data_offset: Set the offset of DATA register according to VERID.
* @pdev: Platform device associated with the MMC controller.
* @pdata: Platform data associated with the MMC controller.
* @slot: Slots sharing this MMC controller.
@@ -147,6 +149,8 @@ struct dw_mci {
u32 current_speed;
u32 num_slots;
u32 fifoth_val;
u16 verid;
u16 data_offset;
struct platform_device *pdev;
struct dw_mci_board *pdata;
struct dw_mci_slot *slot[MAX_MCI_SLOTS];