From mboxrd@z Thu Jan 1 00:00:00 1970 From: Magnus Damm Date: Fri, 19 Feb 2010 09:26:56 +0000 Subject: [PATCH] sh: add sh7724 kick callback to clk_div4_table Message-Id: <20100219092656.638.74788.sendpatchset@t400s> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-sh@vger.kernel.org From: Magnus Damm This patch adds a ->kick() callback to clk_div4_table and ties it into sh_clk_div4_set_rate(). A sh7724 specific kick function is also added that updates the KICK bit whenever div4 clocks in FRQCRA and FRQCRB have been set. Allows us to set the VPU clock. Signed-off-by: Magnus Damm --- arch/sh/include/asm/clock.h | 1 + arch/sh/kernel/cpu/clock-cpg.c | 4 ++++ arch/sh/kernel/cpu/sh4a/clock-sh7724.c | 11 +++++++++++ 3 files changed, 16 insertions(+) --- 0003/arch/sh/include/asm/clock.h +++ work/arch/sh/include/asm/clock.h 2010-02-19 16:45:09.000000000 +0900 @@ -148,6 +148,7 @@ int sh_clk_mstp32_register(struct clk *c struct clk_div4_table { struct clk_div_mult_table *div_mult_table; + void (*kick)(struct clk *clk); }; int sh_clk_div4_register(struct clk *clks, int nr, --- 0003/arch/sh/kernel/cpu/clock-cpg.c +++ work/arch/sh/kernel/cpu/clock-cpg.c 2010-02-19 16:46:17.000000000 +0900 @@ -188,6 +188,7 @@ static int sh_clk_div4_set_parent(struct static int sh_clk_div4_set_rate(struct clk *clk, unsigned long rate, int algo_id) { + struct clk_div4_table *d4t = clk->priv; unsigned long value; int idx = clk_rate_table_find(clk, clk->freq_table, rate); if (idx < 0) @@ -198,6 +199,9 @@ static int sh_clk_div4_set_rate(struct c value |= (idx << clk->enable_bit); __raw_writel(value, clk->enable_reg); + if (d4t->kick) + d4t->kick(clk); + return 0; } --- 0003/arch/sh/kernel/cpu/sh4a/clock-sh7724.c +++ work/arch/sh/kernel/cpu/sh4a/clock-sh7724.c 2010-02-19 16:51:22.000000000 +0900 @@ -127,6 +127,16 @@ struct clk *main_clks[] = { &div3_clk, }; +static void div4_kick(struct clk *clk) +{ + unsigned long value; + + /* set KICK bit in FRQCRA to update hardware setting */ + value = __raw_readl(FRQCRA); + value |= (1 << 31); + __raw_writel(value, FRQCRA); +} + static int divisors[] = { 2, 3, 4, 6, 8, 12, 16, 0, 24, 32, 36, 48, 0, 72 }; static struct clk_div_mult_table div4_div_mult_table = { @@ -136,6 +146,7 @@ static struct clk_div_mult_table div4_di static struct clk_div4_table div4_table = { .div_mult_table = &div4_div_mult_table, + .kick = div4_kick, }; enum { DIV4_I, DIV4_SH, DIV4_B, DIV4_P, DIV4_M1, DIV4_NR };