diff options
author | Magnus Damm <damm@igel.co.jp> | 2009-05-28 13:13:56 +0000 |
---|---|---|
committer | Paul Mundt <lethal@linux-sh.org> | 2009-06-01 18:07:50 +0900 |
commit | 43909a938063f9b6f98c05a2e28b072dd972ece7 (patch) | |
tree | 74ce513c49b2467e30b36c8fd730a3d05503bbe3 /arch/sh | |
parent | a1153e27eec25e9963f5843ba8932952bd9847ac (diff) | |
download | linux-43909a938063f9b6f98c05a2e28b072dd972ece7.tar.bz2 |
sh: hook up shared div4 clock code to sh7785
Hook up the shared 4-bit divisor clock code to sh7785.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh')
-rw-r--r-- | arch/sh/kernel/cpu/sh4a/clock-sh7785.c | 207 |
1 files changed, 48 insertions, 159 deletions
diff --git a/arch/sh/kernel/cpu/sh4a/clock-sh7785.c b/arch/sh/kernel/cpu/sh4a/clock-sh7785.c index 7d557068f4a3..dae20aca536d 100644 --- a/arch/sh/kernel/cpu/sh4a/clock-sh7785.c +++ b/arch/sh/kernel/cpu/sh4a/clock-sh7785.c @@ -18,65 +18,14 @@ #include <asm/freq.h> #include <cpu/sh7785.h> -static unsigned int div2[] = { 1, 2, 4, 6, 8, 12, 16, 18, - 24, 32, 36, 48 }; - -static struct clk_div_mult_table cpg_div = { - .divisors = div2, - .nr_divisors = ARRAY_SIZE(div2), -}; - -struct clk_priv { - unsigned int shift; - - /* allowable divisor bitmap */ - unsigned long div_bitmap; - - /* Supportable frequencies + termination entry */ - struct cpufreq_frequency_table freq_table[ARRAY_SIZE(div2)+1]; -}; - -#define FRQMR_CLK_DATA(_name, _shift, _div_bitmap) \ -static struct clk_priv _name##_data = { \ - .shift = _shift, \ - .div_bitmap = _div_bitmap, \ - \ - .freq_table[0] = { \ - .index = 0, \ - .frequency = CPUFREQ_TABLE_END, \ - }, \ -} - -FRQMR_CLK_DATA(pfc, 0, 0x0f80); -FRQMR_CLK_DATA(s3fc, 4, 0x0ff0); -FRQMR_CLK_DATA(s2fc, 8, 0x0030); -FRQMR_CLK_DATA(mfc, 12, 0x000c); -FRQMR_CLK_DATA(bfc, 16, 0x0fe0); -FRQMR_CLK_DATA(sfc, 20, 0x000c); -FRQMR_CLK_DATA(ufc, 24, 0x000c); -FRQMR_CLK_DATA(ifc, 28, 0x000e); - -static unsigned long frqmr_recalc(struct clk *clk) -{ - struct clk_priv *data = clk->priv; - unsigned int idx = (__raw_readl(FRQMR1) >> data->shift) & 0x000f; - - clk_rate_table_build(clk, data->freq_table, ARRAY_SIZE(div2), - &cpg_div, &data->div_bitmap); - - return data->freq_table[idx].frequency; -} - -static long frqmr_round_rate(struct clk *clk, unsigned long rate) -{ - struct clk_priv *data = clk->priv; - - return clk_rate_table_round(clk, data->freq_table, rate); -} - -static struct clk_ops frqmr_clk_ops = { - .recalc = frqmr_recalc, - .round_rate = frqmr_round_rate, +/* + * Default rate for the root input clock, reset this with clk_set_rate() + * from the platform code. + */ +static struct clk extal_clk = { + .name = "extal", + .id = -1, + .rate = 33333333, }; static unsigned long pll_recalc(struct clk *clk) @@ -92,16 +41,6 @@ static struct clk_ops pll_clk_ops = { .recalc = pll_recalc, }; -/* - * Default rate for the root input clock, reset this with clk_set_rate() - * from the platform code. - */ -static struct clk extal_clk = { - .name = "extal", - .id = -1, - .rate = 33333333, -}; - static struct clk pll_clk = { .name = "pll_clk", .id = -1, @@ -110,87 +49,34 @@ static struct clk pll_clk = { .flags = CLK_ENABLE_ON_INIT, }; -static struct clk cpu_clk = { - .name = "cpu_clk", /* Ick */ - .id = -1, - .ops = &frqmr_clk_ops, - .parent = &pll_clk, - .flags = CLK_ENABLE_ON_INIT, - .priv = &ifc_data, -}; - -static struct clk shyway_clk = { - .name = "shyway_clk", /* SHck */ - .id = -1, - .ops = &frqmr_clk_ops, - .parent = &pll_clk, - .flags = CLK_ENABLE_ON_INIT, - .priv = &sfc_data, -}; - -static struct clk peripheral_clk = { - .name = "peripheral_clk", /* Pck */ - .id = -1, - .ops = &frqmr_clk_ops, - .parent = &pll_clk, - .flags = CLK_ENABLE_ON_INIT, - .priv = &pfc_data, -}; - -static struct clk ddr_clk = { - .name = "ddr_clk", /* DDRck */ - .id = -1, - .ops = &frqmr_clk_ops, - .parent = &pll_clk, - .flags = CLK_ENABLE_ON_INIT, - .priv = &mfc_data, +static struct clk *clks[] = { + &extal_clk, + &pll_clk, }; -static struct clk bus_clk = { - .name = "bus_clk", /* Bck */ - .id = -1, - .ops = &frqmr_clk_ops, - .parent = &pll_clk, - .flags = CLK_ENABLE_ON_INIT, - .priv = &bfc_data, -}; +static unsigned int div2[] = { 1, 2, 4, 6, 8, 12, 16, 18, + 24, 32, 36, 48 }; -static struct clk ga_clk = { - .name = "ga_clk", /* GAck */ - .id = -1, - .ops = &frqmr_clk_ops, - .parent = &pll_clk, - .priv = &s2fc_data, +static struct clk_div_mult_table div4_table = { + .divisors = div2, + .nr_divisors = ARRAY_SIZE(div2), }; -static struct clk du_clk = { - .name = "du_clk", /* DUck */ - .id = -1, - .ops = &frqmr_clk_ops, - .parent = &pll_clk, - .priv = &s3fc_data, -}; +enum { DIV4_I, DIV4_U, DIV4_SH, DIV4_B, DIV4_DDR, DIV4_GA, + DIV4_DU, DIV4_P, DIV4_NR }; -static struct clk umem_clk = { - .name = "umem_clk", /* uck */ - .id = -1, - .ops = &frqmr_clk_ops, - .parent = &pll_clk, - .flags = CLK_ENABLE_ON_INIT, - .priv = &ufc_data, -}; +#define DIV4(_str, _bit, _mask, _flags) \ + SH_CLK_DIV4(_str, &pll_clk, FRQMR1, _bit, _mask, _flags) -static struct clk *clks[] = { - &extal_clk, - &pll_clk, - &cpu_clk, - ­way_clk, - &peripheral_clk, - &ddr_clk, - &bus_clk, - &ga_clk, - &du_clk, - &umem_clk, +struct clk div4_clks[DIV4_NR] = { + [DIV4_P] = DIV4("peripheral_clk", 0, 0x0f80, 0), + [DIV4_DU] = DIV4("du_clk", 4, 0x0ff0, 0), + [DIV4_GA] = DIV4("ga_clk", 8, 0x0030, 0), + [DIV4_DDR] = DIV4("ddr_clk", 12, 0x000c, CLK_ENABLE_ON_INIT), + [DIV4_B] = DIV4("bus_clk", 16, 0x0fe0, CLK_ENABLE_ON_INIT), + [DIV4_SH] = DIV4("shyway_clk", 20, 0x000c, CLK_ENABLE_ON_INIT), + [DIV4_U] = DIV4("umem_clk", 24, 0x000c, CLK_ENABLE_ON_INIT), + [DIV4_I] = DIV4("cpu_clk", 28, 0x000e, CLK_ENABLE_ON_INIT), }; #define MSTPCR0 0xffc80030 @@ -198,22 +84,22 @@ static struct clk *clks[] = { static struct clk mstp_clks[] = { /* MSTPCR0 */ - SH_CLK_MSTP32("scif_fck", 5, &peripheral_clk, MSTPCR0, 29, 0), - SH_CLK_MSTP32("scif_fck", 4, &peripheral_clk, MSTPCR0, 28, 0), - SH_CLK_MSTP32("scif_fck", 3, &peripheral_clk, MSTPCR0, 27, 0), - SH_CLK_MSTP32("scif_fck", 2, &peripheral_clk, MSTPCR0, 26, 0), - SH_CLK_MSTP32("scif_fck", 1, &peripheral_clk, MSTPCR0, 25, 0), - SH_CLK_MSTP32("scif_fck", 0, &peripheral_clk, MSTPCR0, 24, 0), - SH_CLK_MSTP32("ssi_fck", 1, &peripheral_clk, MSTPCR0, 21, 0), - SH_CLK_MSTP32("ssi_fck", 0, &peripheral_clk, MSTPCR0, 20, 0), - SH_CLK_MSTP32("hac_fck", 1, &peripheral_clk, MSTPCR0, 17, 0), - SH_CLK_MSTP32("hac_fck", 0, &peripheral_clk, MSTPCR0, 16, 0), - SH_CLK_MSTP32("mmcif_fck", -1, &peripheral_clk, MSTPCR0, 13, 0), - SH_CLK_MSTP32("flctl_fck", -1, &peripheral_clk, MSTPCR0, 12, 0), - SH_CLK_MSTP32("tmu345_fck", -1, &peripheral_clk, MSTPCR0, 9, 0), - SH_CLK_MSTP32("tmu012_fck", -1, &peripheral_clk, MSTPCR0, 8, 0), - SH_CLK_MSTP32("siof_fck", -1, &peripheral_clk, MSTPCR0, 3, 0), - SH_CLK_MSTP32("hspi_fck", -1, &peripheral_clk, MSTPCR0, 2, 0), + SH_CLK_MSTP32("scif_fck", 5, &div4_clks[DIV4_P], MSTPCR0, 29, 0), + SH_CLK_MSTP32("scif_fck", 4, &div4_clks[DIV4_P], MSTPCR0, 28, 0), + SH_CLK_MSTP32("scif_fck", 3, &div4_clks[DIV4_P], MSTPCR0, 27, 0), + SH_CLK_MSTP32("scif_fck", 2, &div4_clks[DIV4_P], MSTPCR0, 26, 0), + SH_CLK_MSTP32("scif_fck", 1, &div4_clks[DIV4_P], MSTPCR0, 25, 0), + SH_CLK_MSTP32("scif_fck", 0, &div4_clks[DIV4_P], MSTPCR0, 24, 0), + SH_CLK_MSTP32("ssi_fck", 1, &div4_clks[DIV4_P], MSTPCR0, 21, 0), + SH_CLK_MSTP32("ssi_fck", 0, &div4_clks[DIV4_P], MSTPCR0, 20, 0), + SH_CLK_MSTP32("hac_fck", 1, &div4_clks[DIV4_P], MSTPCR0, 17, 0), + SH_CLK_MSTP32("hac_fck", 0, &div4_clks[DIV4_P], MSTPCR0, 16, 0), + SH_CLK_MSTP32("mmcif_fck", -1, &div4_clks[DIV4_P], MSTPCR0, 13, 0), + SH_CLK_MSTP32("flctl_fck", -1, &div4_clks[DIV4_P], MSTPCR0, 12, 0), + SH_CLK_MSTP32("tmu345_fck", -1, &div4_clks[DIV4_P], MSTPCR0, 9, 0), + SH_CLK_MSTP32("tmu012_fck", -1, &div4_clks[DIV4_P], MSTPCR0, 8, 0), + SH_CLK_MSTP32("siof_fck", -1, &div4_clks[DIV4_P], MSTPCR0, 3, 0), + SH_CLK_MSTP32("hspi_fck", -1, &div4_clks[DIV4_P], MSTPCR0, 2, 0), /* MSTPCR1 */ SH_CLK_MSTP32("hudi_fck", -1, NULL, MSTPCR1, 19, 0), @@ -231,6 +117,9 @@ int __init arch_clk_init(void) ret |= clk_register(clks[i]); if (!ret) + ret = sh_clk_div4_register(div4_clks, ARRAY_SIZE(div4_clks), + &div4_table); + if (!ret) ret = sh_clk_mstp32_register(mstp_clks, ARRAY_SIZE(mstp_clks)); return ret; |