On Friday 19 October 2012 12:08 PM, Joseph Lo wrote:
Adding the AHB and APB bus clock control interface for Tegra30.
Signed-off-by: Joseph Lo<josephl@xxxxxxxxxx>
---
arch/arm/mach-tegra/common.c | 4 +
arch/arm/mach-tegra/tegra30_clocks.c | 106 +++++++++++++++++++++++++++++
arch/arm/mach-tegra/tegra30_clocks.h | 1 +
arch/arm/mach-tegra/tegra30_clocks_data.c | 46 +++++++++++++
4 files changed, 157 insertions(+), 0 deletions(-)
<snip>
+
+static long tegra30_bus_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *prate)
+{
+ unsigned long parent_rate = *prate;
+ s64 divider;
+
+ if (rate>= parent_rate)
+ return rate;
+
return parent_rate?
+ divider = parent_rate;
+ divider += rate - 1;
+ do_div(divider, rate);
+
+ if (divider< 0)
+ return divider;
+
+ if (divider> 4)
+ divider = 4;
+ do_div(parent_rate, divider);
+
+ return parent_rate;
+}
--
To unsubscribe from this list: send the line "unsubscribe linux-tegra" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
