diff options
| author | Sujit Reddy Thumma <sthumma@codeaurora.org> | 2014-09-25 15:32:23 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2014-10-01 13:11:19 +0200 |
| commit | c6e79dacd86fd7ddd452fa52b3f4ca996db31e49 (patch) | |
| tree | a1482fd92a23e1c34eaaaaf3a70c1339f1b81eb6 /drivers/scsi/ufs/ufshcd.h | |
| parent | aa497613093412ee26ef4bfa4ffec8391553dfca (diff) | |
ufs: Add clock initialization support
Add generic clock initialization support for UFSHCD platform
driver. The clock info is read from device tree using standard
clock bindings. A generic max-clock-frequency-hz property is
defined to save information on maximum operating clock frequency
the h/w supports.
Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Signed-off-by: Dolev Raviv <draviv@codeaurora.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/scsi/ufs/ufshcd.h')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index c0232f95f5b5..bc0f7ed02605 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -155,6 +155,22 @@ struct ufs_dev_cmd { struct ufs_query query; }; +/** + * struct ufs_clk_info - UFS clock related info + * @list: list headed by hba->clk_list_head + * @clk: clock node + * @name: clock name + * @max_freq: maximum frequency supported by the clock + * @enabled: variable to check against multiple enable/disable + */ +struct ufs_clk_info { + struct list_head list; + struct clk *clk; + const char *name; + u32 max_freq; + bool enabled; +}; + #define PRE_CHANGE 0 #define POST_CHANGE 1 /** @@ -221,6 +237,7 @@ struct ufs_hba_variant_ops { * @dev_cmd: ufs device management command information * @auto_bkops_enabled: to track whether bkops is enabled in device * @vreg_info: UFS device voltage regulator information + * @clk_list_head: UFS host controller clocks list node head */ struct ufs_hba { void __iomem *mmio_base; @@ -282,6 +299,7 @@ struct ufs_hba { bool auto_bkops_enabled; struct ufs_vreg_info vreg_info; + struct list_head clk_list_head; }; #define ufshcd_writel(hba, val, reg) \ |