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path: root/drivers/clk/sunxi-ng/ccu_mp.h
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Diffstat (limited to 'drivers/clk/sunxi-ng/ccu_mp.h')
-rw-r--r--drivers/clk/sunxi-ng/ccu_mp.h30
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/clk/sunxi-ng/ccu_mp.h b/drivers/clk/sunxi-ng/ccu_mp.h
index 915625e97d98..aaef11d747ea 100644
--- a/drivers/clk/sunxi-ng/ccu_mp.h
+++ b/drivers/clk/sunxi-ng/ccu_mp.h
@@ -14,6 +14,7 @@
#ifndef _CCU_MP_H_
#define _CCU_MP_H_
+#include <linux/bitops.h>
#include <linux/clk-provider.h>
#include "ccu_common.h"
@@ -74,4 +75,33 @@ static inline struct ccu_mp *hw_to_ccu_mp(struct clk_hw *hw)
extern const struct clk_ops ccu_mp_ops;
+/*
+ * Special class of M-P clock that supports MMC timing modes
+ *
+ * Since the MMC clock registers all follow the same layout, we can
+ * simplify the macro for this particular case. In addition, as
+ * switching modes also affects the output clock rate, we need to
+ * have CLK_GET_RATE_NOCACHE for all these types of clocks.
+ */
+
+#define SUNXI_CCU_MP_MMC_WITH_MUX_GATE(_struct, _name, _parents, _reg, \
+ _flags) \
+ struct ccu_mp _struct = { \
+ .enable = BIT(31), \
+ .m = _SUNXI_CCU_DIV(0, 4), \
+ .p = _SUNXI_CCU_DIV(16, 2), \
+ .mux = _SUNXI_CCU_MUX(24, 2), \
+ .common = { \
+ .reg = _reg, \
+ .features = CCU_FEATURE_MMC_TIMING_SWITCH, \
+ .hw.init = CLK_HW_INIT_PARENTS(_name, \
+ _parents, \
+ &ccu_mp_mmc_ops, \
+ CLK_GET_RATE_NOCACHE | \
+ _flags), \
+ } \
+ }
+
+extern const struct clk_ops ccu_mp_mmc_ops;
+
#endif /* _CCU_MP_H_ */