ARM: tegra: Port tegra to generic clock framework

This patch converts tegra clock code to generic clock framework in following way:
 - Implement clk_ops as required by generic clk framework. (tegraXX_clocks.c)
 - Use platform specific struct clk_tegra in clk_ops implementation instead of struct clk.
 - Initialize all clock data statically. (tegraXX_clocks_data.c)

Legacy framework did not have recalc_rate and is_enabled functions. Implemented these functions.
Removed init function. It's functionality is splitted into recalc_rate and is_enabled.

Static initialization is used since slab is not up in .init_early and clock
is needed to be initialized before clockevent/clocksource initialization.
Macros redefined for clk_tegra.

Also, single struct clk_tegra is used for all type of clocks (PLL, peripheral etc.). This
is to move quickly to generic common clock framework so that other dependent features will
not be blocked (such as DT binding).

Enabling COMMON_CLOCK config moved to ARCH_TEGRA since it is enabled for both Tegra20
and Tegra30.

Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/arm/mach-tegra/tegra20_clocks.h b/arch/arm/mach-tegra/tegra20_clocks.h
index 167058c02e74..0e42ec065d4a 100644
--- a/arch/arm/mach-tegra/tegra20_clocks.h
+++ b/arch/arm/mach-tegra/tegra20_clocks.h
@@ -17,6 +17,7 @@
 #ifndef __MACH_TEGRA20_CLOCK_H
 #define __MACH_TEGRA20_CLOCK_H
 
+extern struct clk_ops tegra_clk_32k_ops;
 extern struct clk_ops tegra_pll_ops;
 extern struct clk_ops tegra_clk_m_ops;
 extern struct clk_ops tegra_pll_div_ops;
@@ -34,4 +35,7 @@ extern struct clk_ops tegra_emc_clk_ops;
 extern struct clk_ops tegra_periph_clk_ops;
 extern struct clk_ops tegra_clk_shared_bus_ops;
 
+void tegra2_periph_clk_reset(struct clk_hw *hw, bool assert);
+void tegra2_cop_clk_reset(struct clk_hw *hw, bool assert);
+
 #endif