diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-12-28 11:39:19 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-12-28 11:39:19 -0800 |
commit | 81d6e59dabb1ae0c782e9eb7e3d88f699d25b314 (patch) | |
tree | 532afd14c119f1c95206ef0d23db9c4c26a0aa34 /arch/sh/kernel/cpu/sh2a/clock-sh7201.c | |
parent | 4a6908a3a050aacc9c3a2f36b276b46c0629ad91 (diff) | |
parent | 59de580af1c2fd671b0cb27c41ff958859ae5288 (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (132 commits)
sh: oprofile: Fix up the module build.
sh: add UIO support for JPU on SH7722.
serial: sh-sci: Fix up port pinmux for SH7366.
sh: mach-rsk: Use uImage generation by default for rsk7201/7203.
sh: mach-sh03: Fix up pata_platform build breakage.
sh: enable deferred io LCDC on Migo-R
video: sh_mobile_lcdcfb deferred io support
video: deferred io with physically contiguous memory
video: deferred io cleanup
video: fix deferred io fsync()
sh: add LCDC interrupt configuration to AP325 and Migo-R
sh_mobile_lcdc: use FB_SYS helpers instead of FB_CFB
sh: split coherent pages
sh: dma: Kill off ISA DMA wrapper.
sh: Conditionalize the code dumper on CONFIG_DUMP_CODE.
sh: Kill off the unused SH_ALPHANUMERIC debug option.
sh: Enable skipping of bss on debug platforms for sh32 also.
doc: Update sh cpufreq documentation.
sh: mrshpc_setup_windows() needs to be inline.
serial: sh-sci: sci_poll_get_char() is only used by CONFIG_CONSOLE_POLL.
...
Diffstat (limited to 'arch/sh/kernel/cpu/sh2a/clock-sh7201.c')
-rw-r--r-- | arch/sh/kernel/cpu/sh2a/clock-sh7201.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/arch/sh/kernel/cpu/sh2a/clock-sh7201.c b/arch/sh/kernel/cpu/sh2a/clock-sh7201.c new file mode 100644 index 00000000000..020a96fe961 --- /dev/null +++ b/arch/sh/kernel/cpu/sh2a/clock-sh7201.c @@ -0,0 +1,85 @@ +/* + * arch/sh/kernel/cpu/sh2a/clock-sh7201.c + * + * SH7201 support for the clock framework + * + * Copyright (C) 2008 Peter Griffin <pgriffin@mpc-data.co.uk> + * + * Based on clock-sh4.c + * Copyright (C) 2005 Paul Mundt + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ +#include <linux/init.h> +#include <linux/kernel.h> +#include <asm/clock.h> +#include <asm/freq.h> +#include <asm/io.h> + +const static int pll1rate[]={1,2,3,4,6,8}; +const static int pfc_divisors[]={1,2,3,4,6,8,12}; +#define ifc_divisors pfc_divisors + +#if (CONFIG_SH_CLK_MD == 0) +#define PLL2 (4) +#elif (CONFIG_SH_CLK_MD == 2) +#define PLL2 (2) +#elif (CONFIG_SH_CLK_MD == 3) +#define PLL2 (1) +#else +#error "Illegal Clock Mode!" +#endif + +static void master_clk_init(struct clk *clk) +{ + clk->rate = 10000000 * PLL2 * pll1rate[(ctrl_inw(FREQCR) >> 8) & 0x0007]; +} + +static struct clk_ops sh7201_master_clk_ops = { + .init = master_clk_init, +}; + +static void module_clk_recalc(struct clk *clk) +{ + int idx = (ctrl_inw(FREQCR) & 0x0007); + clk->rate = clk->parent->rate / pfc_divisors[idx]; +} + +static struct clk_ops sh7201_module_clk_ops = { + .recalc = module_clk_recalc, +}; + +static void bus_clk_recalc(struct clk *clk) +{ + int idx = (ctrl_inw(FREQCR) & 0x0007); + clk->rate = clk->parent->rate / pfc_divisors[idx]; +} + +static struct clk_ops sh7201_bus_clk_ops = { + .recalc = bus_clk_recalc, +}; + +static void cpu_clk_recalc(struct clk *clk) +{ + int idx = ((ctrl_inw(FREQCR) >> 4) & 0x0007); + clk->rate = clk->parent->rate / ifc_divisors[idx]; +} + +static struct clk_ops sh7201_cpu_clk_ops = { + .recalc = cpu_clk_recalc, +}; + +static struct clk_ops *sh7201_clk_ops[] = { + &sh7201_master_clk_ops, + &sh7201_module_clk_ops, + &sh7201_bus_clk_ops, + &sh7201_cpu_clk_ops, +}; + +void __init arch_init_clk_ops(struct clk_ops **ops, int idx) +{ + if (idx < ARRAY_SIZE(sh7201_clk_ops)) + *ops = sh7201_clk_ops[idx]; +} |