From: Dima Zavin <[email protected]> Add a new 'reset' clk op. This can be provided for any clock, not just peripherals.
Signed-off-by: Dima Zavin <[email protected]> Signed-off-by: Colin Cross <[email protected]> --- arch/arm/mach-tegra/clock.h | 1 + arch/arm/mach-tegra/tegra2_clocks.c | 29 ++++++++++++++++++----------- 2 files changed, 19 insertions(+), 11 deletions(-) diff --git a/arch/arm/mach-tegra/clock.h b/arch/arm/mach-tegra/clock.h index 083a4cf..42f00c0 100644 --- a/arch/arm/mach-tegra/clock.h +++ b/arch/arm/mach-tegra/clock.h @@ -86,6 +86,7 @@ struct clk_ops { int (*set_parent)(struct clk *, struct clk *); int (*set_rate)(struct clk *, unsigned long); long (*round_rate)(struct clk *, unsigned long); + void (*reset)(struct clk *, bool); }; enum clk_state { diff --git a/arch/arm/mach-tegra/tegra2_clocks.c b/arch/arm/mach-tegra/tegra2_clocks.c index 7a2926a..240f921 100644 --- a/arch/arm/mach-tegra/tegra2_clocks.c +++ b/arch/arm/mach-tegra/tegra2_clocks.c @@ -263,6 +263,18 @@ static struct clk_ops tegra_clk_m_ops = { .disable = tegra2_clk_m_disable, }; +void tegra2_periph_reset_assert(struct clk *c) +{ + BUG_ON(!c->ops->reset); + c->ops->reset(c, true); +} + +void tegra2_periph_reset_deassert(struct clk *c) +{ + BUG_ON(!c->ops->reset); + c->ops->reset(c, false); +} + /* super clock functions */ /* "super clocks" on tegra have two-stage muxes and a clock skipping * super divider. We will ignore the clock skipping divider, since we @@ -895,23 +907,17 @@ static void tegra2_periph_clk_disable(struct clk *c) CLK_OUT_ENB_CLR + PERIPH_CLK_TO_ENB_SET_REG(c)); } -void tegra2_periph_reset_deassert(struct clk *c) +static void tegra2_periph_clk_reset(struct clk *c, bool assert) { - pr_debug("%s on clock %s\n", __func__, c->name); - if (!(c->flags & PERIPH_NO_RESET)) - clk_writel(PERIPH_CLK_TO_ENB_BIT(c), - RST_DEVICES_CLR + PERIPH_CLK_TO_ENB_SET_REG(c)); -} + unsigned long base = assert ? RST_DEVICES_SET : RST_DEVICES_CLR; -void tegra2_periph_reset_assert(struct clk *c) -{ - pr_debug("%s on clock %s\n", __func__, c->name); + pr_debug("%s %s on clock %s\n", __func__, + assert ? "assert" : "deassert", c->name); if (!(c->flags & PERIPH_NO_RESET)) clk_writel(PERIPH_CLK_TO_ENB_BIT(c), - RST_DEVICES_SET + PERIPH_CLK_TO_ENB_SET_REG(c)); + base + PERIPH_CLK_TO_ENB_SET_REG(c)); } - static int tegra2_periph_clk_set_parent(struct clk *c, struct clk *p) { u32 val; @@ -1002,6 +1008,7 @@ static struct clk_ops tegra_periph_clk_ops = { .set_parent = &tegra2_periph_clk_set_parent, .set_rate = &tegra2_periph_clk_set_rate, .round_rate = &tegra2_periph_clk_round_rate, + .reset = &tegra2_periph_clk_reset, }; /* Clock doubler ops */ -- 1.7.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
