From 4ec07bba6945290c48dcc5b789cbd7adeabd7695 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Sat, 30 Jan 2010 15:02:58 +0900 Subject: ARM: S3C2443: Use common clock gate code Add common clock gate code for each of the S3C2443 clock gate code. Whether to move this elsewhere will be decided later. Signed-off-by: Ben Dooks --- arch/arm/mach-s3c2443/clock.c | 48 ++++++++++++------------------------------- 1 file changed, 13 insertions(+), 35 deletions(-) (limited to 'arch') diff --git a/arch/arm/mach-s3c2443/clock.c b/arch/arm/mach-s3c2443/clock.c index 3eb8b93..5d061ea 100644 --- a/arch/arm/mach-s3c2443/clock.c +++ b/arch/arm/mach-s3c2443/clock.c @@ -53,55 +53,33 @@ * set the correct muxing at initialisation */ -static int s3c2443_clkcon_enable_h(struct clk *clk, int enable) +static int s3c2443_gate(void __iomem *reg, struct clk *clk, int enable) { - unsigned int clocks = clk->ctrlbit; - unsigned long clkcon; - - clkcon = __raw_readl(S3C2443_HCLKCON); + u32 ctrlbit = clk->ctrlbit; + u32 con = __raw_readl(reg); if (enable) - clkcon |= clocks; + con |= ctrlbit; else - clkcon &= ~clocks; - - __raw_writel(clkcon, S3C2443_HCLKCON); + con &= ~ctrlbit; + __raw_writel(con, reg); return 0; } -static int s3c2443_clkcon_enable_p(struct clk *clk, int enable) +static int s3c2443_clkcon_enable_h(struct clk *clk, int enable) { - unsigned int clocks = clk->ctrlbit; - unsigned long clkcon; - - clkcon = __raw_readl(S3C2443_PCLKCON); - - if (enable) - clkcon |= clocks; - else - clkcon &= ~clocks; - - __raw_writel(clkcon, S3C2443_PCLKCON); + return s3c2443_gate(S3C2443_HCLKCON, clk, enable); +} - return 0; +static int s3c2443_clkcon_enable_p(struct clk *clk, int enable) +{ + return s3c2443_gate(S3C2443_PCLKCON, clk, enable); } static int s3c2443_clkcon_enable_s(struct clk *clk, int enable) { - unsigned int clocks = clk->ctrlbit; - unsigned long clkcon; - - clkcon = __raw_readl(S3C2443_SCLKCON); - - if (enable) - clkcon |= clocks; - else - clkcon &= ~clocks; - - __raw_writel(clkcon, S3C2443_SCLKCON); - - return 0; + return s3c2443_gate(S3C2443_SCLKCON, clk, enable); } static unsigned long s3c2443_roundrate_clksrc(struct clk *clk, -- cgit v1.1 From 8997de30adf5d11e9c807f1d89a894ffed60616b Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Thu, 4 Mar 2010 23:14:44 +0000 Subject: ARM: S3C2440: Fix plat-s3c24xx move of s3c2440/s3c2442 support Commit 58bac7b8ded70c39bcd5f7037091051c277618aa failed to move the two PLL files s3c2440-pll-12000000.c and s3c2440-pll-16934400.c, so place these in arch/arm/mach-s3c2440 to fix this commit up. As a note, these are not built by the default configuration and thus the failure to move wasn't spotted until much later. Signed-off-by: Ben Dooks --- arch/arm/mach-s3c2440/s3c2440-pll-12000000.c | 97 ++++++++++++++++++++ arch/arm/mach-s3c2440/s3c2440-pll-16934400.c | 127 +++++++++++++++++++++++++++ arch/arm/plat-s3c24xx/s3c2440-pll-12000000.c | 97 -------------------- arch/arm/plat-s3c24xx/s3c2440-pll-16934400.c | 127 --------------------------- 4 files changed, 224 insertions(+), 224 deletions(-) create mode 100644 arch/arm/mach-s3c2440/s3c2440-pll-12000000.c create mode 100644 arch/arm/mach-s3c2440/s3c2440-pll-16934400.c delete mode 100644 arch/arm/plat-s3c24xx/s3c2440-pll-12000000.c delete mode 100644 arch/arm/plat-s3c24xx/s3c2440-pll-16934400.c (limited to 'arch') diff --git a/arch/arm/mach-s3c2440/s3c2440-pll-12000000.c b/arch/arm/mach-s3c2440/s3c2440-pll-12000000.c new file mode 100644 index 0000000..f105d5e --- /dev/null +++ b/arch/arm/mach-s3c2440/s3c2440-pll-12000000.c @@ -0,0 +1,97 @@ +/* arch/arm/mach-s3c2440/s3c2440-pll-12000000.c + * + * Copyright (c) 2006-2007 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks + * Vincent Sanders + * + * S3C2440/S3C2442 CPU PLL tables (12MHz Crystal) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include +#include +#include +#include +#include + +#include +#include + +static struct cpufreq_frequency_table s3c2440_plls_12[] __initdata = { + { .frequency = 75000000, .index = PLLVAL(0x75, 3, 3), }, /* FVco 600.000000 */ + { .frequency = 80000000, .index = PLLVAL(0x98, 4, 3), }, /* FVco 640.000000 */ + { .frequency = 90000000, .index = PLLVAL(0x70, 2, 3), }, /* FVco 720.000000 */ + { .frequency = 100000000, .index = PLLVAL(0x5c, 1, 3), }, /* FVco 800.000000 */ + { .frequency = 110000000, .index = PLLVAL(0x66, 1, 3), }, /* FVco 880.000000 */ + { .frequency = 120000000, .index = PLLVAL(0x70, 1, 3), }, /* FVco 960.000000 */ + { .frequency = 150000000, .index = PLLVAL(0x75, 3, 2), }, /* FVco 600.000000 */ + { .frequency = 160000000, .index = PLLVAL(0x98, 4, 2), }, /* FVco 640.000000 */ + { .frequency = 170000000, .index = PLLVAL(0x4d, 1, 2), }, /* FVco 680.000000 */ + { .frequency = 180000000, .index = PLLVAL(0x70, 2, 2), }, /* FVco 720.000000 */ + { .frequency = 190000000, .index = PLLVAL(0x57, 1, 2), }, /* FVco 760.000000 */ + { .frequency = 200000000, .index = PLLVAL(0x5c, 1, 2), }, /* FVco 800.000000 */ + { .frequency = 210000000, .index = PLLVAL(0x84, 2, 2), }, /* FVco 840.000000 */ + { .frequency = 220000000, .index = PLLVAL(0x66, 1, 2), }, /* FVco 880.000000 */ + { .frequency = 230000000, .index = PLLVAL(0x6b, 1, 2), }, /* FVco 920.000000 */ + { .frequency = 240000000, .index = PLLVAL(0x70, 1, 2), }, /* FVco 960.000000 */ + { .frequency = 300000000, .index = PLLVAL(0x75, 3, 1), }, /* FVco 600.000000 */ + { .frequency = 310000000, .index = PLLVAL(0x93, 4, 1), }, /* FVco 620.000000 */ + { .frequency = 320000000, .index = PLLVAL(0x98, 4, 1), }, /* FVco 640.000000 */ + { .frequency = 330000000, .index = PLLVAL(0x66, 2, 1), }, /* FVco 660.000000 */ + { .frequency = 340000000, .index = PLLVAL(0x4d, 1, 1), }, /* FVco 680.000000 */ + { .frequency = 350000000, .index = PLLVAL(0xa7, 4, 1), }, /* FVco 700.000000 */ + { .frequency = 360000000, .index = PLLVAL(0x70, 2, 1), }, /* FVco 720.000000 */ + { .frequency = 370000000, .index = PLLVAL(0xb1, 4, 1), }, /* FVco 740.000000 */ + { .frequency = 380000000, .index = PLLVAL(0x57, 1, 1), }, /* FVco 760.000000 */ + { .frequency = 390000000, .index = PLLVAL(0x7a, 2, 1), }, /* FVco 780.000000 */ + { .frequency = 400000000, .index = PLLVAL(0x5c, 1, 1), }, /* FVco 800.000000 */ +}; + +static int s3c2440_plls12_add(struct sys_device *dev) +{ + struct clk *xtal_clk; + unsigned long xtal; + + xtal_clk = clk_get(NULL, "xtal"); + if (IS_ERR(xtal_clk)) + return PTR_ERR(xtal_clk); + + xtal = clk_get_rate(xtal_clk); + clk_put(xtal_clk); + + if (xtal == 12000000) { + printk(KERN_INFO "Using PLL table for 12MHz crystal\n"); + return s3c_plltab_register(s3c2440_plls_12, + ARRAY_SIZE(s3c2440_plls_12)); + } + + return 0; +} + +static struct sysdev_driver s3c2440_plls12_drv = { + .add = s3c2440_plls12_add, +}; + +static int __init s3c2440_pll_12mhz(void) +{ + return sysdev_driver_register(&s3c2440_sysclass, &s3c2440_plls12_drv); + +} + +arch_initcall(s3c2440_pll_12mhz); + +static struct sysdev_driver s3c2442_plls12_drv = { + .add = s3c2440_plls12_add, +}; + +static int __init s3c2442_pll_12mhz(void) +{ + return sysdev_driver_register(&s3c2442_sysclass, &s3c2442_plls12_drv); + +} + +arch_initcall(s3c2442_pll_12mhz); diff --git a/arch/arm/mach-s3c2440/s3c2440-pll-16934400.c b/arch/arm/mach-s3c2440/s3c2440-pll-16934400.c new file mode 100644 index 0000000..c8a8f90 --- /dev/null +++ b/arch/arm/mach-s3c2440/s3c2440-pll-16934400.c @@ -0,0 +1,127 @@ +/* arch/arm/mach-s3c2440/s3c2440-pll-16934400.c + * + * Copyright (c) 2006-2008 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks + * Vincent Sanders + * + * S3C2440/S3C2442 CPU PLL tables (16.93444MHz Crystal) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include +#include +#include +#include +#include + +#include +#include + +static struct cpufreq_frequency_table s3c2440_plls_169344[] __initdata = { + { .frequency = 78019200, .index = PLLVAL(121, 5, 3), }, /* FVco 624.153600 */ + { .frequency = 84067200, .index = PLLVAL(131, 5, 3), }, /* FVco 672.537600 */ + { .frequency = 90115200, .index = PLLVAL(141, 5, 3), }, /* FVco 720.921600 */ + { .frequency = 96163200, .index = PLLVAL(151, 5, 3), }, /* FVco 769.305600 */ + { .frequency = 102135600, .index = PLLVAL(185, 6, 3), }, /* FVco 817.084800 */ + { .frequency = 108259200, .index = PLLVAL(171, 5, 3), }, /* FVco 866.073600 */ + { .frequency = 114307200, .index = PLLVAL(127, 3, 3), }, /* FVco 914.457600 */ + { .frequency = 120234240, .index = PLLVAL(134, 3, 3), }, /* FVco 961.873920 */ + { .frequency = 126161280, .index = PLLVAL(141, 3, 3), }, /* FVco 1009.290240 */ + { .frequency = 132088320, .index = PLLVAL(148, 3, 3), }, /* FVco 1056.706560 */ + { .frequency = 138015360, .index = PLLVAL(155, 3, 3), }, /* FVco 1104.122880 */ + { .frequency = 144789120, .index = PLLVAL(163, 3, 3), }, /* FVco 1158.312960 */ + { .frequency = 150100363, .index = PLLVAL(187, 9, 2), }, /* FVco 600.401454 */ + { .frequency = 156038400, .index = PLLVAL(121, 5, 2), }, /* FVco 624.153600 */ + { .frequency = 162086400, .index = PLLVAL(126, 5, 2), }, /* FVco 648.345600 */ + { .frequency = 168134400, .index = PLLVAL(131, 5, 2), }, /* FVco 672.537600 */ + { .frequency = 174048000, .index = PLLVAL(177, 7, 2), }, /* FVco 696.192000 */ + { .frequency = 180230400, .index = PLLVAL(141, 5, 2), }, /* FVco 720.921600 */ + { .frequency = 186278400, .index = PLLVAL(124, 4, 2), }, /* FVco 745.113600 */ + { .frequency = 192326400, .index = PLLVAL(151, 5, 2), }, /* FVco 769.305600 */ + { .frequency = 198132480, .index = PLLVAL(109, 3, 2), }, /* FVco 792.529920 */ + { .frequency = 204271200, .index = PLLVAL(185, 6, 2), }, /* FVco 817.084800 */ + { .frequency = 210268800, .index = PLLVAL(141, 4, 2), }, /* FVco 841.075200 */ + { .frequency = 216518400, .index = PLLVAL(171, 5, 2), }, /* FVco 866.073600 */ + { .frequency = 222264000, .index = PLLVAL(97, 2, 2), }, /* FVco 889.056000 */ + { .frequency = 228614400, .index = PLLVAL(127, 3, 2), }, /* FVco 914.457600 */ + { .frequency = 234259200, .index = PLLVAL(158, 4, 2), }, /* FVco 937.036800 */ + { .frequency = 240468480, .index = PLLVAL(134, 3, 2), }, /* FVco 961.873920 */ + { .frequency = 246960000, .index = PLLVAL(167, 4, 2), }, /* FVco 987.840000 */ + { .frequency = 252322560, .index = PLLVAL(141, 3, 2), }, /* FVco 1009.290240 */ + { .frequency = 258249600, .index = PLLVAL(114, 2, 2), }, /* FVco 1032.998400 */ + { .frequency = 264176640, .index = PLLVAL(148, 3, 2), }, /* FVco 1056.706560 */ + { .frequency = 270950400, .index = PLLVAL(120, 2, 2), }, /* FVco 1083.801600 */ + { .frequency = 276030720, .index = PLLVAL(155, 3, 2), }, /* FVco 1104.122880 */ + { .frequency = 282240000, .index = PLLVAL(92, 1, 2), }, /* FVco 1128.960000 */ + { .frequency = 289578240, .index = PLLVAL(163, 3, 2), }, /* FVco 1158.312960 */ + { .frequency = 294235200, .index = PLLVAL(131, 2, 2), }, /* FVco 1176.940800 */ + { .frequency = 300200727, .index = PLLVAL(187, 9, 1), }, /* FVco 600.401454 */ + { .frequency = 306358690, .index = PLLVAL(191, 9, 1), }, /* FVco 612.717380 */ + { .frequency = 312076800, .index = PLLVAL(121, 5, 1), }, /* FVco 624.153600 */ + { .frequency = 318366720, .index = PLLVAL(86, 3, 1), }, /* FVco 636.733440 */ + { .frequency = 324172800, .index = PLLVAL(126, 5, 1), }, /* FVco 648.345600 */ + { .frequency = 330220800, .index = PLLVAL(109, 4, 1), }, /* FVco 660.441600 */ + { .frequency = 336268800, .index = PLLVAL(131, 5, 1), }, /* FVco 672.537600 */ + { .frequency = 342074880, .index = PLLVAL(93, 3, 1), }, /* FVco 684.149760 */ + { .frequency = 348096000, .index = PLLVAL(177, 7, 1), }, /* FVco 696.192000 */ + { .frequency = 355622400, .index = PLLVAL(118, 4, 1), }, /* FVco 711.244800 */ + { .frequency = 360460800, .index = PLLVAL(141, 5, 1), }, /* FVco 720.921600 */ + { .frequency = 366206400, .index = PLLVAL(165, 6, 1), }, /* FVco 732.412800 */ + { .frequency = 372556800, .index = PLLVAL(124, 4, 1), }, /* FVco 745.113600 */ + { .frequency = 378201600, .index = PLLVAL(126, 4, 1), }, /* FVco 756.403200 */ + { .frequency = 384652800, .index = PLLVAL(151, 5, 1), }, /* FVco 769.305600 */ + { .frequency = 391608000, .index = PLLVAL(177, 6, 1), }, /* FVco 783.216000 */ + { .frequency = 396264960, .index = PLLVAL(109, 3, 1), }, /* FVco 792.529920 */ + { .frequency = 402192000, .index = PLLVAL(87, 2, 1), }, /* FVco 804.384000 */ +}; + +static int s3c2440_plls169344_add(struct sys_device *dev) +{ + struct clk *xtal_clk; + unsigned long xtal; + + xtal_clk = clk_get(NULL, "xtal"); + if (IS_ERR(xtal_clk)) + return PTR_ERR(xtal_clk); + + xtal = clk_get_rate(xtal_clk); + clk_put(xtal_clk); + + if (xtal == 169344000) { + printk(KERN_INFO "Using PLL table for 16.9344MHz crystal\n"); + return s3c_plltab_register(s3c2440_plls_169344, + ARRAY_SIZE(s3c2440_plls_169344)); + } + + return 0; +} + +static struct sysdev_driver s3c2440_plls169344_drv = { + .add = s3c2440_plls169344_add, +}; + +static int __init s3c2440_pll_16934400(void) +{ + return sysdev_driver_register(&s3c2440_sysclass, + &s3c2440_plls169344_drv); + +} + +arch_initcall(s3c2440_pll_16934400); + +static struct sysdev_driver s3c2442_plls169344_drv = { + .add = s3c2440_plls169344_add, +}; + +static int __init s3c2442_pll_16934400(void) +{ + return sysdev_driver_register(&s3c2442_sysclass, + &s3c2442_plls169344_drv); + +} + +arch_initcall(s3c2442_pll_16934400); diff --git a/arch/arm/plat-s3c24xx/s3c2440-pll-12000000.c b/arch/arm/plat-s3c24xx/s3c2440-pll-12000000.c deleted file mode 100644 index 49f6503..0000000 --- a/arch/arm/plat-s3c24xx/s3c2440-pll-12000000.c +++ /dev/null @@ -1,97 +0,0 @@ -/* arch/arm/plat-s3c24xx/s3c2440-pll-12000000.c - * - * Copyright (c) 2006-2007 Simtec Electronics - * http://armlinux.simtec.co.uk/ - * Ben Dooks - * Vincent Sanders - * - * S3C2440/S3C2442 CPU PLL tables (12MHz Crystal) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. -*/ - -#include -#include -#include -#include -#include - -#include -#include - -static struct cpufreq_frequency_table s3c2440_plls_12[] __initdata = { - { .frequency = 75000000, .index = PLLVAL(0x75, 3, 3), }, /* FVco 600.000000 */ - { .frequency = 80000000, .index = PLLVAL(0x98, 4, 3), }, /* FVco 640.000000 */ - { .frequency = 90000000, .index = PLLVAL(0x70, 2, 3), }, /* FVco 720.000000 */ - { .frequency = 100000000, .index = PLLVAL(0x5c, 1, 3), }, /* FVco 800.000000 */ - { .frequency = 110000000, .index = PLLVAL(0x66, 1, 3), }, /* FVco 880.000000 */ - { .frequency = 120000000, .index = PLLVAL(0x70, 1, 3), }, /* FVco 960.000000 */ - { .frequency = 150000000, .index = PLLVAL(0x75, 3, 2), }, /* FVco 600.000000 */ - { .frequency = 160000000, .index = PLLVAL(0x98, 4, 2), }, /* FVco 640.000000 */ - { .frequency = 170000000, .index = PLLVAL(0x4d, 1, 2), }, /* FVco 680.000000 */ - { .frequency = 180000000, .index = PLLVAL(0x70, 2, 2), }, /* FVco 720.000000 */ - { .frequency = 190000000, .index = PLLVAL(0x57, 1, 2), }, /* FVco 760.000000 */ - { .frequency = 200000000, .index = PLLVAL(0x5c, 1, 2), }, /* FVco 800.000000 */ - { .frequency = 210000000, .index = PLLVAL(0x84, 2, 2), }, /* FVco 840.000000 */ - { .frequency = 220000000, .index = PLLVAL(0x66, 1, 2), }, /* FVco 880.000000 */ - { .frequency = 230000000, .index = PLLVAL(0x6b, 1, 2), }, /* FVco 920.000000 */ - { .frequency = 240000000, .index = PLLVAL(0x70, 1, 2), }, /* FVco 960.000000 */ - { .frequency = 300000000, .index = PLLVAL(0x75, 3, 1), }, /* FVco 600.000000 */ - { .frequency = 310000000, .index = PLLVAL(0x93, 4, 1), }, /* FVco 620.000000 */ - { .frequency = 320000000, .index = PLLVAL(0x98, 4, 1), }, /* FVco 640.000000 */ - { .frequency = 330000000, .index = PLLVAL(0x66, 2, 1), }, /* FVco 660.000000 */ - { .frequency = 340000000, .index = PLLVAL(0x4d, 1, 1), }, /* FVco 680.000000 */ - { .frequency = 350000000, .index = PLLVAL(0xa7, 4, 1), }, /* FVco 700.000000 */ - { .frequency = 360000000, .index = PLLVAL(0x70, 2, 1), }, /* FVco 720.000000 */ - { .frequency = 370000000, .index = PLLVAL(0xb1, 4, 1), }, /* FVco 740.000000 */ - { .frequency = 380000000, .index = PLLVAL(0x57, 1, 1), }, /* FVco 760.000000 */ - { .frequency = 390000000, .index = PLLVAL(0x7a, 2, 1), }, /* FVco 780.000000 */ - { .frequency = 400000000, .index = PLLVAL(0x5c, 1, 1), }, /* FVco 800.000000 */ -}; - -static int s3c2440_plls12_add(struct sys_device *dev) -{ - struct clk *xtal_clk; - unsigned long xtal; - - xtal_clk = clk_get(NULL, "xtal"); - if (IS_ERR(xtal_clk)) - return PTR_ERR(xtal_clk); - - xtal = clk_get_rate(xtal_clk); - clk_put(xtal_clk); - - if (xtal == 12000000) { - printk(KERN_INFO "Using PLL table for 12MHz crystal\n"); - return s3c_plltab_register(s3c2440_plls_12, - ARRAY_SIZE(s3c2440_plls_12)); - } - - return 0; -} - -static struct sysdev_driver s3c2440_plls12_drv = { - .add = s3c2440_plls12_add, -}; - -static int __init s3c2440_pll_12mhz(void) -{ - return sysdev_driver_register(&s3c2440_sysclass, &s3c2440_plls12_drv); - -} - -arch_initcall(s3c2440_pll_12mhz); - -static struct sysdev_driver s3c2442_plls12_drv = { - .add = s3c2440_plls12_add, -}; - -static int __init s3c2442_pll_12mhz(void) -{ - return sysdev_driver_register(&s3c2442_sysclass, &s3c2442_plls12_drv); - -} - -arch_initcall(s3c2442_pll_12mhz); diff --git a/arch/arm/plat-s3c24xx/s3c2440-pll-16934400.c b/arch/arm/plat-s3c24xx/s3c2440-pll-16934400.c deleted file mode 100644 index 7679af1..0000000 --- a/arch/arm/plat-s3c24xx/s3c2440-pll-16934400.c +++ /dev/null @@ -1,127 +0,0 @@ -/* arch/arm/plat-s3c24xx/s3c2440-pll-16934400.c - * - * Copyright (c) 2006-2008 Simtec Electronics - * http://armlinux.simtec.co.uk/ - * Ben Dooks - * Vincent Sanders - * - * S3C2440/S3C2442 CPU PLL tables (16.93444MHz Crystal) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. -*/ - -#include -#include -#include -#include -#include - -#include -#include - -static struct cpufreq_frequency_table s3c2440_plls_169344[] __initdata = { - { .frequency = 78019200, .index = PLLVAL(121, 5, 3), }, /* FVco 624.153600 */ - { .frequency = 84067200, .index = PLLVAL(131, 5, 3), }, /* FVco 672.537600 */ - { .frequency = 90115200, .index = PLLVAL(141, 5, 3), }, /* FVco 720.921600 */ - { .frequency = 96163200, .index = PLLVAL(151, 5, 3), }, /* FVco 769.305600 */ - { .frequency = 102135600, .index = PLLVAL(185, 6, 3), }, /* FVco 817.084800 */ - { .frequency = 108259200, .index = PLLVAL(171, 5, 3), }, /* FVco 866.073600 */ - { .frequency = 114307200, .index = PLLVAL(127, 3, 3), }, /* FVco 914.457600 */ - { .frequency = 120234240, .index = PLLVAL(134, 3, 3), }, /* FVco 961.873920 */ - { .frequency = 126161280, .index = PLLVAL(141, 3, 3), }, /* FVco 1009.290240 */ - { .frequency = 132088320, .index = PLLVAL(148, 3, 3), }, /* FVco 1056.706560 */ - { .frequency = 138015360, .index = PLLVAL(155, 3, 3), }, /* FVco 1104.122880 */ - { .frequency = 144789120, .index = PLLVAL(163, 3, 3), }, /* FVco 1158.312960 */ - { .frequency = 150100363, .index = PLLVAL(187, 9, 2), }, /* FVco 600.401454 */ - { .frequency = 156038400, .index = PLLVAL(121, 5, 2), }, /* FVco 624.153600 */ - { .frequency = 162086400, .index = PLLVAL(126, 5, 2), }, /* FVco 648.345600 */ - { .frequency = 168134400, .index = PLLVAL(131, 5, 2), }, /* FVco 672.537600 */ - { .frequency = 174048000, .index = PLLVAL(177, 7, 2), }, /* FVco 696.192000 */ - { .frequency = 180230400, .index = PLLVAL(141, 5, 2), }, /* FVco 720.921600 */ - { .frequency = 186278400, .index = PLLVAL(124, 4, 2), }, /* FVco 745.113600 */ - { .frequency = 192326400, .index = PLLVAL(151, 5, 2), }, /* FVco 769.305600 */ - { .frequency = 198132480, .index = PLLVAL(109, 3, 2), }, /* FVco 792.529920 */ - { .frequency = 204271200, .index = PLLVAL(185, 6, 2), }, /* FVco 817.084800 */ - { .frequency = 210268800, .index = PLLVAL(141, 4, 2), }, /* FVco 841.075200 */ - { .frequency = 216518400, .index = PLLVAL(171, 5, 2), }, /* FVco 866.073600 */ - { .frequency = 222264000, .index = PLLVAL(97, 2, 2), }, /* FVco 889.056000 */ - { .frequency = 228614400, .index = PLLVAL(127, 3, 2), }, /* FVco 914.457600 */ - { .frequency = 234259200, .index = PLLVAL(158, 4, 2), }, /* FVco 937.036800 */ - { .frequency = 240468480, .index = PLLVAL(134, 3, 2), }, /* FVco 961.873920 */ - { .frequency = 246960000, .index = PLLVAL(167, 4, 2), }, /* FVco 987.840000 */ - { .frequency = 252322560, .index = PLLVAL(141, 3, 2), }, /* FVco 1009.290240 */ - { .frequency = 258249600, .index = PLLVAL(114, 2, 2), }, /* FVco 1032.998400 */ - { .frequency = 264176640, .index = PLLVAL(148, 3, 2), }, /* FVco 1056.706560 */ - { .frequency = 270950400, .index = PLLVAL(120, 2, 2), }, /* FVco 1083.801600 */ - { .frequency = 276030720, .index = PLLVAL(155, 3, 2), }, /* FVco 1104.122880 */ - { .frequency = 282240000, .index = PLLVAL(92, 1, 2), }, /* FVco 1128.960000 */ - { .frequency = 289578240, .index = PLLVAL(163, 3, 2), }, /* FVco 1158.312960 */ - { .frequency = 294235200, .index = PLLVAL(131, 2, 2), }, /* FVco 1176.940800 */ - { .frequency = 300200727, .index = PLLVAL(187, 9, 1), }, /* FVco 600.401454 */ - { .frequency = 306358690, .index = PLLVAL(191, 9, 1), }, /* FVco 612.717380 */ - { .frequency = 312076800, .index = PLLVAL(121, 5, 1), }, /* FVco 624.153600 */ - { .frequency = 318366720, .index = PLLVAL(86, 3, 1), }, /* FVco 636.733440 */ - { .frequency = 324172800, .index = PLLVAL(126, 5, 1), }, /* FVco 648.345600 */ - { .frequency = 330220800, .index = PLLVAL(109, 4, 1), }, /* FVco 660.441600 */ - { .frequency = 336268800, .index = PLLVAL(131, 5, 1), }, /* FVco 672.537600 */ - { .frequency = 342074880, .index = PLLVAL(93, 3, 1), }, /* FVco 684.149760 */ - { .frequency = 348096000, .index = PLLVAL(177, 7, 1), }, /* FVco 696.192000 */ - { .frequency = 355622400, .index = PLLVAL(118, 4, 1), }, /* FVco 711.244800 */ - { .frequency = 360460800, .index = PLLVAL(141, 5, 1), }, /* FVco 720.921600 */ - { .frequency = 366206400, .index = PLLVAL(165, 6, 1), }, /* FVco 732.412800 */ - { .frequency = 372556800, .index = PLLVAL(124, 4, 1), }, /* FVco 745.113600 */ - { .frequency = 378201600, .index = PLLVAL(126, 4, 1), }, /* FVco 756.403200 */ - { .frequency = 384652800, .index = PLLVAL(151, 5, 1), }, /* FVco 769.305600 */ - { .frequency = 391608000, .index = PLLVAL(177, 6, 1), }, /* FVco 783.216000 */ - { .frequency = 396264960, .index = PLLVAL(109, 3, 1), }, /* FVco 792.529920 */ - { .frequency = 402192000, .index = PLLVAL(87, 2, 1), }, /* FVco 804.384000 */ -}; - -static int s3c2440_plls169344_add(struct sys_device *dev) -{ - struct clk *xtal_clk; - unsigned long xtal; - - xtal_clk = clk_get(NULL, "xtal"); - if (IS_ERR(xtal_clk)) - return PTR_ERR(xtal_clk); - - xtal = clk_get_rate(xtal_clk); - clk_put(xtal_clk); - - if (xtal == 169344000) { - printk(KERN_INFO "Using PLL table for 16.9344MHz crystal\n"); - return s3c_plltab_register(s3c2440_plls_169344, - ARRAY_SIZE(s3c2440_plls_169344)); - } - - return 0; -} - -static struct sysdev_driver s3c2440_plls169344_drv = { - .add = s3c2440_plls169344_add, -}; - -static int __init s3c2440_pll_16934400(void) -{ - return sysdev_driver_register(&s3c2440_sysclass, - &s3c2440_plls169344_drv); - -} - -arch_initcall(s3c2440_pll_16934400); - -static struct sysdev_driver s3c2442_plls169344_drv = { - .add = s3c2440_plls169344_add, -}; - -static int __init s3c2442_pll_16934400(void) -{ - return sysdev_driver_register(&s3c2442_sysclass, - &s3c2442_plls169344_drv); - -} - -arch_initcall(s3c2442_pll_16934400); -- cgit v1.1 From 0ea5357f2e02aa3741daddf71dd8b2f3b313db74 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 5 Mar 2010 10:47:23 +0000 Subject: ARM: S3C64XX: Reintroduce unconditional build of audio device Ben Dooks' commit cf9814eb (ARM: S3C64XX: Make audio device code built unconditionally) made the struct devices for the audio blocks in the S3C64xx series processors be built unconditionally but this change seems to have gone AWOL in the various Samsung platform moves this release cycle, causing link failures with machine drivers that rely on it. Reintroduce the change. Signed-off-by: Mark Brown Signed-off-by: Ben Dooks --- arch/arm/mach-s3c64xx/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/arm/mach-s3c64xx/Makefile b/arch/arm/mach-s3c64xx/Makefile index d1d341a..3758e15 100644 --- a/arch/arm/mach-s3c64xx/Makefile +++ b/arch/arm/mach-s3c64xx/Makefile @@ -57,6 +57,6 @@ obj-$(CONFIG_MACH_HMT) += mach-hmt.o obj-y += dev-uart.o obj-y += dev-rtc.o +obj-y += dev-audio.o obj-$(CONFIG_S3C_ADC) += dev-adc.o -obj-$(CONFIG_SND_S3C24XX_SOC) += dev-audio.o obj-$(CONFIG_S3C64XX_DEV_SPI) += dev-spi.o -- cgit v1.1 From 9aa753c4422492547a190df8a3b6a56282669f9b Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Sat, 30 Jan 2010 09:19:59 +0200 Subject: ARM: S3C2443: Change to using plat-samsung clksrc-clk implementation The S3C2443 clock code could easily make use of the clksrc implementation in plat-samsung for many of the clocks. Make the clocks that easily move to clksrc-clk over, update any initialisation and remove the old register definitions from the header file (it is only being used once). Signed-off-by: Ben Dooks --- .../mach-s3c2410/include/mach/regs-s3c2443-clock.h | 29 +- arch/arm/mach-s3c2443/Kconfig | 1 + arch/arm/mach-s3c2443/clock.c | 513 +++++---------------- 3 files changed, 128 insertions(+), 415 deletions(-) (limited to 'arch') diff --git a/arch/arm/mach-s3c2410/include/mach/regs-s3c2443-clock.h b/arch/arm/mach-s3c2410/include/mach/regs-s3c2443-clock.h index 6026d09..64217ca 100644 --- a/arch/arm/mach-s3c2410/include/mach/regs-s3c2443-clock.h +++ b/arch/arm/mach-s3c2410/include/mach/regs-s3c2443-clock.h @@ -42,12 +42,6 @@ #define S3C2443_PLLCON_OFF (1<<24) -#define S3C2443_CLKSRC_I2S_EXT (1<<14) -#define S3C2443_CLKSRC_I2S_EPLLDIV (0<<14) -#define S3C2443_CLKSRC_I2S_EPLLREF (2<<14) -#define S3C2443_CLKSRC_I2S_EPLLREF3 (3<<14) -#define S3C2443_CLKSRC_I2S_MASK (3<<14) - #define S3C2443_CLKSRC_EPLLREF_XTAL (2<<7) #define S3C2443_CLKSRC_EPLLREF_EXTCLK (3<<7) #define S3C2443_CLKSRC_EPLLREF_MPLLREF (0<<7) @@ -81,28 +75,7 @@ #define S3C2443_CLKDIV0_ARMDIV_12 (13<<9) #define S3C2443_CLKDIV0_ARMDIV_16 (15<<9) -/* S3C2443_CLKDIV1 */ - -#define S3C2443_CLKDIV1_CAMDIV_MASK (15<<26) -#define S3C2443_CLKDIV1_CAMDIV_SHIFT (26) - -#define S3C2443_CLKDIV1_HSSPIDIV_MASK (3<<24) -#define S3C2443_CLKDIV1_HSSPIDIV_SHIFT (24) - -#define S3C2443_CLKDIV1_DISPDIV_MASK (0xff<<16) -#define S3C2443_CLKDIV1_DISPDIV_SHIFT (16) - -#define S3C2443_CLKDIV1_I2SDIV_MASK (15<<12) -#define S3C2443_CLKDIV1_I2SDIV_SHIFT (12) - -#define S3C2443_CLKDIV1_UARTDIV_MASK (15<<8) -#define S3C2443_CLKDIV1_UARTDIV_SHIFT (8) - -#define S3C2443_CLKDIV1_HSMMCDIV_MASK (3<<6) -#define S3C2443_CLKDIV1_HSMMCDIV_SHIFT (6) - -#define S3C2443_CLKDIV1_USBHOSTDIV_MASK (3<<4) -#define S3C2443_CLKDIV1_USBHOSTDIV_SHIFT (4) +/* S3C2443_CLKDIV1 removed, only used in clock.c code */ #define S3C2443_CLKCON_NAND diff --git a/arch/arm/mach-s3c2443/Kconfig b/arch/arm/mach-s3c2443/Kconfig index 4314c44..698140a 100644 --- a/arch/arm/mach-s3c2443/Kconfig +++ b/arch/arm/mach-s3c2443/Kconfig @@ -7,6 +7,7 @@ config CPU_S3C2443 depends on ARCH_S3C2410 select S3C2443_DMA if S3C2410_DMA select CPU_LLSERIAL_S3C2440 + select SAMSUNG_CLKSRC help Support for the S3C2443 SoC from the S3C24XX line diff --git a/arch/arm/mach-s3c2443/clock.c b/arch/arm/mach-s3c2443/clock.c index 5d061ea..f89e71f 100644 --- a/arch/arm/mach-s3c2443/clock.c +++ b/arch/arm/mach-s3c2443/clock.c @@ -1,6 +1,6 @@ /* linux/arch/arm/mach-s3c2443/clock.c * - * Copyright (c) 2007 Simtec Electronics + * Copyright (c) 2007,2010 Simtec Electronics * Ben Dooks * * S3C2443 Clock control support @@ -42,6 +42,7 @@ #include #include +#include #include /* We currently have to assume that the system is running @@ -82,45 +83,7 @@ static int s3c2443_clkcon_enable_s(struct clk *clk, int enable) return s3c2443_gate(S3C2443_SCLKCON, clk, enable); } -static unsigned long s3c2443_roundrate_clksrc(struct clk *clk, - unsigned long rate, - unsigned int max) -{ - unsigned long parent_rate = clk_get_rate(clk->parent); - int div; - - if (rate > parent_rate) - return parent_rate; - - /* note, we remove the +/- 1 calculations as they cancel out */ - - div = (rate / parent_rate); - - if (div < 1) - div = 1; - else if (div > max) - div = max; - - return parent_rate / div; -} - -static unsigned long s3c2443_roundrate_clksrc4(struct clk *clk, - unsigned long rate) -{ - return s3c2443_roundrate_clksrc(clk, rate, 4); -} - -static unsigned long s3c2443_roundrate_clksrc16(struct clk *clk, - unsigned long rate) -{ - return s3c2443_roundrate_clksrc(clk, rate, 16); -} - -static unsigned long s3c2443_roundrate_clksrc256(struct clk *clk, - unsigned long rate) -{ - return s3c2443_roundrate_clksrc(clk, rate, 256); -} +/* s3c2443_roundate_clksrc is close enough to s3c_roundate_clksrc */ /* clock selections */ @@ -143,31 +106,23 @@ static struct clk clk_i2s_ext = { .id = -1, }; -static int s3c2443_setparent_epllref(struct clk *clk, struct clk *parent) -{ - unsigned long clksrc = __raw_readl(S3C2443_CLKSRC); - - clksrc &= ~S3C2443_CLKSRC_EPLLREF_MASK; - - if (parent == &clk_xtal) - clksrc |= S3C2443_CLKSRC_EPLLREF_XTAL; - else if (parent == &clk_ext) - clksrc |= S3C2443_CLKSRC_EPLLREF_EXTCLK; - else if (parent != &clk_mpllref) - return -EINVAL; - - __raw_writel(clksrc, S3C2443_CLKSRC); - clk->parent = parent; - - return 0; -} +static struct clk *clk_epllref_sources[] = { + [0] = &clk_mpllref, + [1] = &clk_mpllref, + [2] = &clk_xtal, + [3] = &clk_ext, +}; -static struct clk clk_epllref = { - .name = "epllref", - .id = -1, - .ops = &(struct clk_ops) { - .set_parent = s3c2443_setparent_epllref, +static struct clksrc_clk clk_epllref = { + .clk = { + .name = "epllref", + .id = -1, + }, + .sources = &(struct clksrc_sources) { + .sources = clk_epllref_sources, + .nr_sources = ARRAY_SIZE(clk_epllref_sources), }, + .reg_src = { .reg = S3C2443_CLKSRC, .size = 2, .shift = 7 }, }; static unsigned long s3c2443_getrate_mdivclk(struct clk *clk) @@ -273,7 +228,7 @@ static int s3c2443_setparent_esysclk(struct clk *clk, struct clk *parent) if (parent == &clk_epll) clksrc |= S3C2443_CLKSRC_ESYSCLK_EPLL; - else if (parent == &clk_epllref) + else if (parent == &clk_epllref.clk) clksrc &= ~S3C2443_CLKSRC_ESYSCLK_EPLL; else return -EINVAL; @@ -298,87 +253,30 @@ static struct clk clk_esysclk = { * UART baud-rate clock sourced from esysclk via a divisor */ -static unsigned long s3c2443_getrate_uart(struct clk *clk) -{ - unsigned long parent_rate = clk_get_rate(clk->parent); - unsigned long div = __raw_readl(S3C2443_CLKDIV1); - - div &= S3C2443_CLKDIV1_UARTDIV_MASK; - div >>= S3C2443_CLKDIV1_UARTDIV_SHIFT; - - return parent_rate / (div + 1); -} - - -static int s3c2443_setrate_uart(struct clk *clk, unsigned long rate) -{ - unsigned long parent_rate = clk_get_rate(clk->parent); - unsigned long clkdivn = __raw_readl(S3C2443_CLKDIV1); - - rate = s3c2443_roundrate_clksrc16(clk, rate); - rate = parent_rate / rate; - - clkdivn &= ~S3C2443_CLKDIV1_UARTDIV_MASK; - clkdivn |= (rate - 1) << S3C2443_CLKDIV1_UARTDIV_SHIFT; - - __raw_writel(clkdivn, S3C2443_CLKDIV1); - return 0; -} - -static struct clk clk_uart = { - .name = "uartclk", - .id = -1, - .parent = &clk_esysclk, - .ops = &(struct clk_ops) { - .get_rate = s3c2443_getrate_uart, - .set_rate = s3c2443_setrate_uart, - .round_rate = s3c2443_roundrate_clksrc16, +static struct clksrc_clk clk_uart = { + .clk = { + .name = "uartclk", + .id = -1, + .parent = &clk_esysclk, }, + .reg_div = { .reg = S3C2443_CLKDIV1, .size = 4, .shift = 8 }, }; + /* hsspi * * high-speed spi clock, sourced from esysclk */ -static unsigned long s3c2443_getrate_hsspi(struct clk *clk) -{ - unsigned long parent_rate = clk_get_rate(clk->parent); - unsigned long div = __raw_readl(S3C2443_CLKDIV1); - - div &= S3C2443_CLKDIV1_HSSPIDIV_MASK; - div >>= S3C2443_CLKDIV1_HSSPIDIV_SHIFT; - - return parent_rate / (div + 1); -} - - -static int s3c2443_setrate_hsspi(struct clk *clk, unsigned long rate) -{ - unsigned long parent_rate = clk_get_rate(clk->parent); - unsigned long clkdivn = __raw_readl(S3C2443_CLKDIV1); - - rate = s3c2443_roundrate_clksrc4(clk, rate); - rate = parent_rate / rate; - - clkdivn &= ~S3C2443_CLKDIV1_HSSPIDIV_MASK; - clkdivn |= (rate - 1) << S3C2443_CLKDIV1_HSSPIDIV_SHIFT; - - __raw_writel(clkdivn, S3C2443_CLKDIV1); - return 0; -} - -static struct clk clk_hsspi = { - .name = "hsspi", - .id = -1, - .parent = &clk_esysclk, - .ctrlbit = S3C2443_SCLKCON_HSSPICLK, - .enable = s3c2443_clkcon_enable_s, - .ops = &(struct clk_ops) { - .get_rate = s3c2443_getrate_hsspi, - .set_rate = s3c2443_setrate_hsspi, - .round_rate = s3c2443_roundrate_clksrc4, +static struct clksrc_clk clk_hsspi = { + .clk = { + .name = "hsspi", + .id = -1, + .parent = &clk_esysclk, + .ctrlbit = S3C2443_SCLKCON_HSSPICLK, + .enable = s3c2443_clkcon_enable_s, }, + .reg_div = { .reg = S3C2443_CLKDIV1, .size = 2, .shift = 4 }, }; /* usbhost @@ -386,43 +284,15 @@ static struct clk clk_hsspi = { * usb host bus-clock, usually 48MHz to provide USB bus clock timing */ -static unsigned long s3c2443_getrate_usbhost(struct clk *clk) -{ - unsigned long parent_rate = clk_get_rate(clk->parent); - unsigned long div = __raw_readl(S3C2443_CLKDIV1); - - div &= S3C2443_CLKDIV1_USBHOSTDIV_MASK; - div >>= S3C2443_CLKDIV1_USBHOSTDIV_SHIFT; - - return parent_rate / (div + 1); -} - -static int s3c2443_setrate_usbhost(struct clk *clk, unsigned long rate) -{ - unsigned long parent_rate = clk_get_rate(clk->parent); - unsigned long clkdivn = __raw_readl(S3C2443_CLKDIV1); - - rate = s3c2443_roundrate_clksrc4(clk, rate); - rate = parent_rate / rate; - - clkdivn &= ~S3C2443_CLKDIV1_USBHOSTDIV_MASK; - clkdivn |= (rate - 1) << S3C2443_CLKDIV1_USBHOSTDIV_SHIFT; - - __raw_writel(clkdivn, S3C2443_CLKDIV1); - return 0; -} - -static struct clk clk_usb_bus_host = { - .name = "usb-bus-host-parent", - .id = -1, - .parent = &clk_esysclk, - .ctrlbit = S3C2443_SCLKCON_USBHOST, - .enable = s3c2443_clkcon_enable_s, - .ops = &(struct clk_ops) { - .get_rate = s3c2443_getrate_usbhost, - .set_rate = s3c2443_setrate_usbhost, - .round_rate = s3c2443_roundrate_clksrc4, +static struct clksrc_clk clk_usb_bus_host = { + .clk = { + .name = "usb-bus-host-parent", + .id = -1, + .parent = &clk_esysclk, + .ctrlbit = S3C2443_SCLKCON_USBHOST, + .enable = s3c2443_clkcon_enable_s, }, + .reg_div = { .reg = S3C2443_CLKDIV1, .size = 2, .shift = 4 }, }; /* clk_hsmcc_div @@ -432,41 +302,13 @@ static struct clk clk_usb_bus_host = { * be fed to the hsmmc block */ -static unsigned long s3c2443_getrate_hsmmc_div(struct clk *clk) -{ - unsigned long parent_rate = clk_get_rate(clk->parent); - unsigned long div = __raw_readl(S3C2443_CLKDIV1); - - div &= S3C2443_CLKDIV1_HSMMCDIV_MASK; - div >>= S3C2443_CLKDIV1_HSMMCDIV_SHIFT; - - return parent_rate / (div + 1); -} - -static int s3c2443_setrate_hsmmc_div(struct clk *clk, unsigned long rate) -{ - unsigned long parent_rate = clk_get_rate(clk->parent); - unsigned long clkdivn = __raw_readl(S3C2443_CLKDIV1); - - rate = s3c2443_roundrate_clksrc4(clk, rate); - rate = parent_rate / rate; - - clkdivn &= ~S3C2443_CLKDIV1_HSMMCDIV_MASK; - clkdivn |= (rate - 1) << S3C2443_CLKDIV1_HSMMCDIV_SHIFT; - - __raw_writel(clkdivn, S3C2443_CLKDIV1); - return 0; -} - -static struct clk clk_hsmmc_div = { - .name = "hsmmc-div", - .id = -1, - .parent = &clk_esysclk, - .ops = &(struct clk_ops) { - .get_rate = s3c2443_getrate_hsmmc_div, - .set_rate = s3c2443_setrate_hsmmc_div, - .round_rate = s3c2443_roundrate_clksrc4, +static struct clksrc_clk clk_hsmmc_div = { + .clk = { + .name = "hsmmc-div", + .id = -1, + .parent = &clk_esysclk, }, + .reg_div = { .reg = S3C2443_CLKDIV1, .size = 2, .shift = 6 }, }; static int s3c2443_setparent_hsmmc(struct clk *clk, struct clk *parent) @@ -499,7 +341,7 @@ static int s3c2443_enable_hsmmc(struct clk *clk, int enable) static struct clk clk_hsmmc = { .name = "hsmmc-if", .id = -1, - .parent = &clk_hsmmc_div, + .parent = &clk_hsmmc_div.clk, .enable = s3c2443_enable_hsmmc, .ops = &(struct clk_ops) { .set_parent = s3c2443_setparent_hsmmc, @@ -508,79 +350,46 @@ static struct clk clk_hsmmc = { /* i2s_eplldiv * - * this clock is the output from the i2s divisor of esysclk + * This clock is the output from the I2S divisor of ESYSCLK, and is seperate + * from the mux that comes after it (cannot merge into one single clock) */ -static unsigned long s3c2443_getrate_i2s_eplldiv(struct clk *clk) -{ - unsigned long parent_rate = clk_get_rate(clk->parent); - unsigned long div = __raw_readl(S3C2443_CLKDIV1); - - div &= S3C2443_CLKDIV1_I2SDIV_MASK; - div >>= S3C2443_CLKDIV1_I2SDIV_SHIFT; - - return parent_rate / (div + 1); -} - -static int s3c2443_setrate_i2s_eplldiv(struct clk *clk, unsigned long rate) -{ - unsigned long parent_rate = clk_get_rate(clk->parent); - unsigned long clkdivn = __raw_readl(S3C2443_CLKDIV1); - - rate = s3c2443_roundrate_clksrc16(clk, rate); - rate = parent_rate / rate; - - clkdivn &= ~S3C2443_CLKDIV1_I2SDIV_MASK; - clkdivn |= (rate - 1) << S3C2443_CLKDIV1_I2SDIV_SHIFT; - - __raw_writel(clkdivn, S3C2443_CLKDIV1); - return 0; -} - -static struct clk clk_i2s_eplldiv = { - .name = "i2s-eplldiv", - .id = -1, - .parent = &clk_esysclk, - .ops = &(struct clk_ops) { - .get_rate = s3c2443_getrate_i2s_eplldiv, - .set_rate = s3c2443_setrate_i2s_eplldiv, - .round_rate = s3c2443_roundrate_clksrc16, +static struct clksrc_clk clk_i2s_eplldiv = { + .clk = { + .name = "i2s-eplldiv", + .id = -1, + .parent = &clk_esysclk, }, + .reg_div = { .reg = S3C2443_CLKDIV1, .size = 4, .shift = 12, }, }; /* i2s-ref * * i2s bus reference clock, selectable from external, esysclk or epllref + * + * Note, this used to be two clocks, but was compressed into one. */ -static int s3c2443_setparent_i2s(struct clk *clk, struct clk *parent) -{ - unsigned long clksrc = __raw_readl(S3C2443_CLKSRC); - - clksrc &= ~S3C2443_CLKSRC_I2S_MASK; - - if (parent == &clk_epllref) - clksrc |= S3C2443_CLKSRC_I2S_EPLLREF; - else if (parent == &clk_i2s_ext) - clksrc |= S3C2443_CLKSRC_I2S_EXT; - else if (parent != &clk_i2s_eplldiv) - return -EINVAL; - - clk->parent = parent; - __raw_writel(clksrc, S3C2443_CLKSRC); +struct clk *clk_i2s_srclist[] = { + [0] = &clk_i2s_eplldiv.clk, + [1] = &clk_i2s_ext, + [2] = &clk_epllref.clk, + [3] = &clk_epllref.clk, +}; - return 0; -} +static struct clksrc_clk clk_i2s = { + .clk = { + .name = "i2s-if", + .id = -1, + .ctrlbit = S3C2443_SCLKCON_I2SCLK, + .enable = s3c2443_clkcon_enable_s, -static struct clk clk_i2s = { - .name = "i2s-if", - .id = -1, - .parent = &clk_i2s_eplldiv, - .ctrlbit = S3C2443_SCLKCON_I2SCLK, - .enable = s3c2443_clkcon_enable_s, - .ops = &(struct clk_ops) { - .set_parent = s3c2443_setparent_i2s, }, + .sources = &(struct clksrc_sources) { + .sources = clk_i2s_srclist, + .nr_sources = ARRAY_SIZE(clk_i2s_srclist), + }, + .reg_src = { .reg = S3C2443_CLKSRC, .size = 2, .shift = 14 }, }; /* cam-if @@ -588,43 +397,15 @@ static struct clk clk_i2s = { * camera interface bus-clock, divided down from esysclk */ -static unsigned long s3c2443_getrate_cam(struct clk *clk) -{ - unsigned long parent_rate = clk_get_rate(clk->parent); - unsigned long div = __raw_readl(S3C2443_CLKDIV1); - - div &= S3C2443_CLKDIV1_CAMDIV_MASK; - div >>= S3C2443_CLKDIV1_CAMDIV_SHIFT; - - return parent_rate / (div + 1); -} - -static int s3c2443_setrate_cam(struct clk *clk, unsigned long rate) -{ - unsigned long parent_rate = clk_get_rate(clk->parent); - unsigned long clkdiv1 = __raw_readl(S3C2443_CLKDIV1); - - rate = s3c2443_roundrate_clksrc16(clk, rate); - rate = parent_rate / rate; - - clkdiv1 &= ~S3C2443_CLKDIV1_CAMDIV_MASK; - clkdiv1 |= (rate - 1) << S3C2443_CLKDIV1_CAMDIV_SHIFT; - - __raw_writel(clkdiv1, S3C2443_CLKDIV1); - return 0; -} - -static struct clk clk_cam = { - .name = "camif-upll", /* same as 2440 name */ - .id = -1, - .parent = &clk_esysclk, - .ctrlbit = S3C2443_SCLKCON_CAMCLK, - .enable = s3c2443_clkcon_enable_s, - .ops = &(struct clk_ops) { - .get_rate = s3c2443_getrate_cam, - .set_rate = s3c2443_setrate_cam, - .round_rate = s3c2443_roundrate_clksrc16, +static struct clksrc_clk clk_cam = { + .clk = { + .name = "camif-upll", /* same as 2440 name */ + .id = -1, + .parent = &clk_esysclk, + .ctrlbit = S3C2443_SCLKCON_CAMCLK, + .enable = s3c2443_clkcon_enable_s, }, + .reg_div = { .reg = S3C2443_CLKDIV1, .size = 4, .shift = 26 }, }; /* display-if @@ -632,43 +413,15 @@ static struct clk clk_cam = { * display interface clock, divided from esysclk */ -static unsigned long s3c2443_getrate_display(struct clk *clk) -{ - unsigned long parent_rate = clk_get_rate(clk->parent); - unsigned long div = __raw_readl(S3C2443_CLKDIV1); - - div &= S3C2443_CLKDIV1_DISPDIV_MASK; - div >>= S3C2443_CLKDIV1_DISPDIV_SHIFT; - - return parent_rate / (div + 1); -} - -static int s3c2443_setrate_display(struct clk *clk, unsigned long rate) -{ - unsigned long parent_rate = clk_get_rate(clk->parent); - unsigned long clkdivn = __raw_readl(S3C2443_CLKDIV1); - - rate = s3c2443_roundrate_clksrc256(clk, rate); - rate = parent_rate / rate; - - clkdivn &= ~S3C2443_CLKDIV1_UARTDIV_MASK; - clkdivn |= (rate - 1) << S3C2443_CLKDIV1_UARTDIV_SHIFT; - - __raw_writel(clkdivn, S3C2443_CLKDIV1); - return 0; -} - -static struct clk clk_display = { - .name = "display-if", - .id = -1, - .parent = &clk_esysclk, - .ctrlbit = S3C2443_SCLKCON_DISPCLK, - .enable = s3c2443_clkcon_enable_s, - .ops = &(struct clk_ops) { - .get_rate = s3c2443_getrate_display, - .set_rate = s3c2443_setrate_display, - .round_rate = s3c2443_roundrate_clksrc256, +static struct clksrc_clk clk_display = { + .clk = { + .name = "display-if", + .id = -1, + .parent = &clk_esysclk, + .ctrlbit = S3C2443_SCLKCON_DISPCLK, + .enable = s3c2443_clkcon_enable_s, }, + .reg_div = { .reg = S3C2443_CLKDIV1, .size = 8, .shift = 16 }, }; /* prediv @@ -865,7 +618,7 @@ static struct clk init_clocks[] = { }, { .name = "usb-bus-host", .id = -1, - .parent = &clk_usb_bus_host, + .parent = &clk_usb_bus_host.clk, }, { .name = "ac97", .id = -1, @@ -887,50 +640,27 @@ static int __init clk_init_set_parent(struct clk *clk, struct clk *parent) return clk_set_parent(clk, parent); } +static struct clksrc_clk __initdata *init_list[] = { + &clk_epllref, /* should be first */ + &clk_i2s_eplldiv, + &clk_i2s, + &clk_cam, + &clk_uart, + &clk_display, + &clk_hsmmc_div, + &clk_usb_bus_host, +}; + static void __init s3c2443_clk_initparents(void) { unsigned long clksrc = __raw_readl(S3C2443_CLKSRC); struct clk *parent; - - switch (clksrc & S3C2443_CLKSRC_EPLLREF_MASK) { - case S3C2443_CLKSRC_EPLLREF_EXTCLK: - parent = &clk_ext; - break; - - case S3C2443_CLKSRC_EPLLREF_XTAL: - default: - parent = &clk_xtal; - break; - - case S3C2443_CLKSRC_EPLLREF_MPLLREF: - case S3C2443_CLKSRC_EPLLREF_MPLLREF2: - parent = &clk_mpllref; - break; - } - - clk_init_set_parent(&clk_epllref, parent); - - switch (clksrc & S3C2443_CLKSRC_I2S_MASK) { - case S3C2443_CLKSRC_I2S_EXT: - parent = &clk_i2s_ext; - break; - - case S3C2443_CLKSRC_I2S_EPLLDIV: - default: - parent = &clk_i2s_eplldiv; - break; - - case S3C2443_CLKSRC_I2S_EPLLREF: - case S3C2443_CLKSRC_I2S_EPLLREF3: - parent = &clk_epllref; - } - - clk_init_set_parent(&clk_i2s, &clk_epllref); + int ptr; /* esysclk source */ parent = (clksrc & S3C2443_CLKSRC_ESYSCLK_EPLL) ? - &clk_epll : &clk_epllref; + &clk_epll : &clk_epllref.clk; clk_init_set_parent(&clk_esysclk, parent); @@ -953,6 +683,9 @@ static void __init s3c2443_clk_initparents(void) parent = &clk_armdiv; clk_init_set_parent(&clk_arm, parent); + + for (ptr = 0; ptr < ARRAY_SIZE(init_list); ptr++) + s3c_set_clksrc(init_list[ptr], false); } /* armdiv divisor table */ @@ -984,15 +717,9 @@ static inline unsigned long s3c2443_get_hdiv(unsigned long clkcon0) /* clocks to add straight away */ -static struct clk *clks[] __initdata = { - &clk_ext, - &clk_epll, +static struct clksrc_clk *clksrcs[] __initdata = { &clk_usb_bus_host, - &clk_usb_bus, - &clk_esysclk, &clk_epllref, - &clk_mpllref, - &clk_msysclk, &clk_uart, &clk_display, &clk_cam, @@ -1000,6 +727,15 @@ static struct clk *clks[] __initdata = { &clk_i2s, &clk_hsspi, &clk_hsmmc_div, +}; + +static struct clk *clks[] __initdata = { + &clk_ext, + &clk_epll, + &clk_usb_bus, + &clk_esysclk, + &clk_mpllref, + &clk_msysclk, &clk_hsmmc, &clk_armdiv, &clk_arm, @@ -1064,15 +800,18 @@ void __init s3c2443_init_clocks(int xtal) } } + for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++) + s3c_register_clksrc(clksrcs[ptr], 1); + clk_epll.rate = s3c2443_get_epll(epllcon, xtal); - clk_epll.parent = &clk_epllref; - clk_usb_bus.parent = &clk_usb_bus_host; + clk_epll.parent = &clk_epllref.clk; + clk_usb_bus.parent = &clk_usb_bus_host.clk; /* ensure usb bus clock is within correct rate of 48MHz */ - if (clk_get_rate(&clk_usb_bus_host) != (48 * 1000 * 1000)) { + if (clk_get_rate(&clk_usb_bus_host.clk) != (48 * 1000 * 1000)) { printk(KERN_INFO "Warning: USB host bus not at 48MHz\n"); - clk_set_rate(&clk_usb_bus_host, 48*1000*1000); + clk_set_rate(&clk_usb_bus_host.clk, 48*1000*1000); } printk("S3C2443: epll %s %ld.%03ld MHz, usb-bus %ld.%03ld MHz\n", -- cgit v1.1 From 4bed36b2c5b3248ae6f9aaf5194fbe85153e4026 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Sat, 30 Jan 2010 10:25:49 +0200 Subject: ARM: S3C2443: Further clksrc-clk conversions Move more of the core clocks that where left over from the last commit as they are much more core to the system operation. This should allow for easier tracking of any problems. Signed-off-by: Ben Dooks --- .../mach-s3c2410/include/mach/regs-s3c2443-clock.h | 3 - arch/arm/mach-s3c2443/clock.c | 187 +++++++-------------- 2 files changed, 62 insertions(+), 128 deletions(-) (limited to 'arch') diff --git a/arch/arm/mach-s3c2410/include/mach/regs-s3c2443-clock.h b/arch/arm/mach-s3c2410/include/mach/regs-s3c2443-clock.h index 64217ca..d87ebe0 100644 --- a/arch/arm/mach-s3c2410/include/mach/regs-s3c2443-clock.h +++ b/arch/arm/mach-s3c2410/include/mach/regs-s3c2443-clock.h @@ -48,11 +48,8 @@ #define S3C2443_CLKSRC_EPLLREF_MPLLREF2 (1<<7) #define S3C2443_CLKSRC_EPLLREF_MASK (3<<7) -#define S3C2443_CLKSRC_ESYSCLK_EPLL (1<<6) -#define S3C2443_CLKSRC_MSYSCLK_MPLL (1<<4) #define S3C2443_CLKSRC_EXTCLK_DIV (1<<3) -#define S3C2443_CLKDIV0_DVS (1<<13) #define S3C2443_CLKDIV0_HALF_HCLK (1<<3) #define S3C2443_CLKDIV0_HALF_PCLK (1<<2) diff --git a/arch/arm/mach-s3c2443/clock.c b/arch/arm/mach-s3c2443/clock.c index f89e71f..1307f69 100644 --- a/arch/arm/mach-s3c2443/clock.c +++ b/arch/arm/mach-s3c2443/clock.c @@ -1,6 +1,6 @@ /* linux/arch/arm/mach-s3c2443/clock.c * - * Copyright (c) 2007,2010 Simtec Electronics + * Copyright (c) 2007, 2010 Simtec Electronics * Ben Dooks * * S3C2443 Clock control support @@ -145,33 +145,24 @@ static struct clk clk_mdivclk = { }, }; -static int s3c2443_setparent_msysclk(struct clk *clk, struct clk *parent) -{ - unsigned long clksrc = __raw_readl(S3C2443_CLKSRC); - - clksrc &= ~(S3C2443_CLKSRC_MSYSCLK_MPLL | - S3C2443_CLKSRC_EXTCLK_DIV); - - if (parent == &clk_mpll) - clksrc |= S3C2443_CLKSRC_MSYSCLK_MPLL; - else if (parent == &clk_mdivclk) - clksrc |= S3C2443_CLKSRC_EXTCLK_DIV; - else if (parent != &clk_mpllref) - return -EINVAL; - - __raw_writel(clksrc, S3C2443_CLKSRC); - clk->parent = parent; - - return 0; -} +static struct clk *clk_msysclk_sources[] = { + [0] = &clk_mpllref, + [1] = &clk_mpll, + [2] = &clk_mdivclk, + [3] = &clk_mpllref, +}; -static struct clk clk_msysclk = { - .name = "msysclk", - .parent = &clk_xtal, - .id = -1, - .ops = &(struct clk_ops) { - .set_parent = s3c2443_setparent_msysclk, +static struct clksrc_clk clk_msysclk = { + .clk = { + .name = "msysclk", + .parent = &clk_xtal, + .id = -1, + }, + .sources = &(struct clksrc_sources) { + .sources = clk_msysclk_sources, + .nr_sources = ARRAY_SIZE(clk_msysclk_sources), }, + .reg_src = { .reg = S3C2443_CLKSRC, .size = 2, .shift = 3 }, }; /* armdiv @@ -183,38 +174,29 @@ static struct clk clk_msysclk = { static struct clk clk_armdiv = { .name = "armdiv", .id = -1, - .parent = &clk_msysclk, + .parent = &clk_msysclk.clk, }; /* armclk * - * this is the clock fed into the ARM core itself, either from - * armdiv or from hclk. + * this is the clock fed into the ARM core itself, from armdiv or from hclk. */ -static int s3c2443_setparent_armclk(struct clk *clk, struct clk *parent) -{ - unsigned long clkdiv0; - - clkdiv0 = __raw_readl(S3C2443_CLKDIV0); - - if (parent == &clk_armdiv) - clkdiv0 &= ~S3C2443_CLKDIV0_DVS; - else if (parent == &clk_h) - clkdiv0 |= S3C2443_CLKDIV0_DVS; - else - return -EINVAL; - - __raw_writel(clkdiv0, S3C2443_CLKDIV0); - return 0; -} +static struct clk *clk_arm_sources[] = { + [0] = &clk_armdiv, + [1] = &clk_h, +}; -static struct clk clk_arm = { - .name = "armclk", - .id = -1, - .ops = &(struct clk_ops) { - .set_parent = s3c2443_setparent_armclk, +static struct clksrc_clk clk_arm = { + .clk = { + .name = "armclk", + .id = -1, }, + .sources = &(struct clksrc_sources) { + .sources = clk_arm_sources, + .nr_sources = ARRAY_SIZE(clk_arm_sources), + }, + .reg_src = { .reg = S3C2443_CLKDIV0, .size = 1, .shift = 13 }, }; /* esysclk @@ -222,30 +204,22 @@ static struct clk clk_arm = { * this is sourced from either the EPLL or the EPLLref clock */ -static int s3c2443_setparent_esysclk(struct clk *clk, struct clk *parent) -{ - unsigned long clksrc = __raw_readl(S3C2443_CLKSRC); - - if (parent == &clk_epll) - clksrc |= S3C2443_CLKSRC_ESYSCLK_EPLL; - else if (parent == &clk_epllref.clk) - clksrc &= ~S3C2443_CLKSRC_ESYSCLK_EPLL; - else - return -EINVAL; - - __raw_writel(clksrc, S3C2443_CLKSRC); - clk->parent = parent; - - return 0; -} +static struct clk *clk_sysclk_sources[] = { + [0] = &clk_epllref.clk, + [1] = &clk_epll, +}; -static struct clk clk_esysclk = { - .name = "esysclk", - .parent = &clk_epll, - .id = -1, - .ops = &(struct clk_ops) { - .set_parent = s3c2443_setparent_esysclk, +static struct clksrc_clk clk_esysclk = { + .clk = { + .name = "esysclk", + .parent = &clk_epll, + .id = -1, }, + .sources = &(struct clksrc_sources) { + .sources = clk_sysclk_sources, + .nr_sources = ARRAY_SIZE(clk_sysclk_sources), + }, + .reg_src = { .reg = S3C2443_CLKSRC, .size = 1, .shift = 6 }, }; /* uartclk @@ -257,7 +231,7 @@ static struct clksrc_clk clk_uart = { .clk = { .name = "uartclk", .id = -1, - .parent = &clk_esysclk, + .parent = &clk_esysclk.clk, }, .reg_div = { .reg = S3C2443_CLKDIV1, .size = 4, .shift = 8 }, }; @@ -272,7 +246,7 @@ static struct clksrc_clk clk_hsspi = { .clk = { .name = "hsspi", .id = -1, - .parent = &clk_esysclk, + .parent = &clk_esysclk.clk, .ctrlbit = S3C2443_SCLKCON_HSSPICLK, .enable = s3c2443_clkcon_enable_s, }, @@ -288,7 +262,7 @@ static struct clksrc_clk clk_usb_bus_host = { .clk = { .name = "usb-bus-host-parent", .id = -1, - .parent = &clk_esysclk, + .parent = &clk_esysclk.clk, .ctrlbit = S3C2443_SCLKCON_USBHOST, .enable = s3c2443_clkcon_enable_s, }, @@ -306,7 +280,7 @@ static struct clksrc_clk clk_hsmmc_div = { .clk = { .name = "hsmmc-div", .id = -1, - .parent = &clk_esysclk, + .parent = &clk_esysclk.clk, }, .reg_div = { .reg = S3C2443_CLKDIV1, .size = 2, .shift = 6 }, }; @@ -358,7 +332,7 @@ static struct clksrc_clk clk_i2s_eplldiv = { .clk = { .name = "i2s-eplldiv", .id = -1, - .parent = &clk_esysclk, + .parent = &clk_esysclk.clk, }, .reg_div = { .reg = S3C2443_CLKDIV1, .size = 4, .shift = 12, }, }; @@ -401,7 +375,7 @@ static struct clksrc_clk clk_cam = { .clk = { .name = "camif-upll", /* same as 2440 name */ .id = -1, - .parent = &clk_esysclk, + .parent = &clk_esysclk.clk, .ctrlbit = S3C2443_SCLKCON_CAMCLK, .enable = s3c2443_clkcon_enable_s, }, @@ -417,7 +391,7 @@ static struct clksrc_clk clk_display = { .clk = { .name = "display-if", .id = -1, - .parent = &clk_esysclk, + .parent = &clk_esysclk.clk, .ctrlbit = S3C2443_SCLKCON_DISPCLK, .enable = s3c2443_clkcon_enable_s, }, @@ -443,7 +417,7 @@ static unsigned long s3c2443_prediv_getrate(struct clk *clk) static struct clk clk_prediv = { .name = "prediv", .id = -1, - .parent = &clk_msysclk, + .parent = &clk_msysclk.clk, .ops = &(struct clk_ops) { .get_rate = s3c2443_prediv_getrate, }, @@ -629,19 +603,11 @@ static struct clk init_clocks[] = { /* clocks to add where we need to check their parentage */ -/* s3c2443_clk_initparents - * - * Initialise the parents for the clocks that we get at start-time -*/ - -static int __init clk_init_set_parent(struct clk *clk, struct clk *parent) -{ - printk(KERN_DEBUG "clock %s: parent %s\n", clk->name, parent->name); - return clk_set_parent(clk, parent); -} - static struct clksrc_clk __initdata *init_list[] = { &clk_epllref, /* should be first */ + &clk_esysclk, + &clk_msysclk, + &clk_arm, &clk_i2s_eplldiv, &clk_i2s, &clk_cam, @@ -653,39 +619,10 @@ static struct clksrc_clk __initdata *init_list[] = { static void __init s3c2443_clk_initparents(void) { - unsigned long clksrc = __raw_readl(S3C2443_CLKSRC); - struct clk *parent; int ptr; - /* esysclk source */ - - parent = (clksrc & S3C2443_CLKSRC_ESYSCLK_EPLL) ? - &clk_epll : &clk_epllref.clk; - - clk_init_set_parent(&clk_esysclk, parent); - - /* msysclk source */ - - if (clksrc & S3C2443_CLKSRC_MSYSCLK_MPLL) { - parent = &clk_mpll; - } else { - parent = (clksrc & S3C2443_CLKSRC_EXTCLK_DIV) ? - &clk_mdivclk : &clk_mpllref; - } - - clk_init_set_parent(&clk_msysclk, parent); - - /* arm */ - - if (__raw_readl(S3C2443_CLKDIV0) & S3C2443_CLKDIV0_DVS) - parent = &clk_h; - else - parent = &clk_armdiv; - - clk_init_set_parent(&clk_arm, parent); - for (ptr = 0; ptr < ARRAY_SIZE(init_list); ptr++) - s3c_set_clksrc(init_list[ptr], false); + s3c_set_clksrc(init_list[ptr], true); } /* armdiv divisor table */ @@ -720,6 +657,9 @@ static inline unsigned long s3c2443_get_hdiv(unsigned long clkcon0) static struct clksrc_clk *clksrcs[] __initdata = { &clk_usb_bus_host, &clk_epllref, + &clk_esysclk, + &clk_msysclk, + &clk_arm, &clk_uart, &clk_display, &clk_cam, @@ -733,12 +673,9 @@ static struct clk *clks[] __initdata = { &clk_ext, &clk_epll, &clk_usb_bus, - &clk_esysclk, &clk_mpllref, - &clk_msysclk, &clk_hsmmc, &clk_armdiv, - &clk_arm, &clk_prediv, }; @@ -758,7 +695,7 @@ void __init_or_cpufreq s3c2443_setup_clocks(void) clk_put(xtal_clk); pll = s3c2443_get_mpll(mpllcon, xtal); - clk_msysclk.rate = pll; + clk_msysclk.clk.rate = pll; fclk = pll / s3c2443_fclk_div(clkdiv0); hclk = s3c2443_prediv_getrate(&clk_prediv); -- cgit v1.1 From 2dd5f181420ae8ea1cb976b81ed87517f0d4fcd7 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Sat, 30 Jan 2010 10:46:52 +0200 Subject: ARM: S3C2443: Update notes on MPLLREF clock Add note on MPLLREF clock source and why it cannot be easily removed. Signed-off-by: Ben Dooks --- arch/arm/mach-s3c2443/clock.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/arm/mach-s3c2443/clock.c b/arch/arm/mach-s3c2443/clock.c index 1307f69..3fa37aa 100644 --- a/arch/arm/mach-s3c2443/clock.c +++ b/arch/arm/mach-s3c2443/clock.c @@ -83,10 +83,12 @@ static int s3c2443_clkcon_enable_s(struct clk *clk, int enable) return s3c2443_gate(S3C2443_SCLKCON, clk, enable); } -/* s3c2443_roundate_clksrc is close enough to s3c_roundate_clksrc */ - /* clock selections */ +/* mpllref is a direct descendant of clk_xtal by default, but it is not + * elided as the EPLL can be either sourced by the XTAL or EXTCLK and as + * such directly equating the two source clocks is impossible. + */ static struct clk clk_mpllref = { .name = "mpllref", .parent = &clk_xtal, -- cgit v1.1 From 71ed587d4a5d377ef5a6917043543ff949ff7dcf Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Sat, 30 Jan 2010 10:49:15 +0200 Subject: ARM: S3C2443: Remove #if 0 for clk_mpll The clk_mpll has long been moved into common clock code, remove the code completely instead of the nasty #if 0 block. Signed-off-by: Ben Dooks --- arch/arm/mach-s3c2443/clock.c | 8 -------- 1 file changed, 8 deletions(-) (limited to 'arch') diff --git a/arch/arm/mach-s3c2443/clock.c b/arch/arm/mach-s3c2443/clock.c index 3fa37aa..177719c 100644 --- a/arch/arm/mach-s3c2443/clock.c +++ b/arch/arm/mach-s3c2443/clock.c @@ -95,14 +95,6 @@ static struct clk clk_mpllref = { .id = -1, }; -#if 0 -static struct clk clk_mpll = { - .name = "mpll", - .parent = &clk_mpllref, - .id = -1, -}; -#endif - static struct clk clk_i2s_ext = { .name = "i2s-ext", .id = -1, -- cgit v1.1 From 41f23a09f32124322dc41bea7f65baff6e9b0ac5 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Sat, 30 Jan 2010 11:14:14 +0200 Subject: ARM: S3C2443: Add set_rate and round_rate calls for armdiv clock Add set_rate and round_rate calls to armdiv for future use with cpu frequency scaling. Signed-off-by: Ben Dooks --- arch/arm/mach-s3c2443/clock.c | 93 +++++++++++++++++++++++++++++++++---------- 1 file changed, 73 insertions(+), 20 deletions(-) (limited to 'arch') diff --git a/arch/arm/mach-s3c2443/clock.c b/arch/arm/mach-s3c2443/clock.c index 177719c..62cd4ea 100644 --- a/arch/arm/mach-s3c2443/clock.c +++ b/arch/arm/mach-s3c2443/clock.c @@ -165,10 +165,83 @@ static struct clksrc_clk clk_msysclk = { * divider values applied to it to then be fed into armclk. */ +/* armdiv divisor table */ + +static unsigned int armdiv[16] = { + [S3C2443_CLKDIV0_ARMDIV_1 >> S3C2443_CLKDIV0_ARMDIV_SHIFT] = 1, + [S3C2443_CLKDIV0_ARMDIV_2 >> S3C2443_CLKDIV0_ARMDIV_SHIFT] = 2, + [S3C2443_CLKDIV0_ARMDIV_3 >> S3C2443_CLKDIV0_ARMDIV_SHIFT] = 3, + [S3C2443_CLKDIV0_ARMDIV_4 >> S3C2443_CLKDIV0_ARMDIV_SHIFT] = 4, + [S3C2443_CLKDIV0_ARMDIV_6 >> S3C2443_CLKDIV0_ARMDIV_SHIFT] = 6, + [S3C2443_CLKDIV0_ARMDIV_8 >> S3C2443_CLKDIV0_ARMDIV_SHIFT] = 8, + [S3C2443_CLKDIV0_ARMDIV_12 >> S3C2443_CLKDIV0_ARMDIV_SHIFT] = 12, + [S3C2443_CLKDIV0_ARMDIV_16 >> S3C2443_CLKDIV0_ARMDIV_SHIFT] = 16, +}; + +static inline unsigned int s3c2443_fclk_div(unsigned long clkcon0) +{ + clkcon0 &= S3C2443_CLKDIV0_ARMDIV_MASK; + + return armdiv[clkcon0 >> S3C2443_CLKDIV0_ARMDIV_SHIFT]; +} + +static unsigned long s3c2443_armclk_roundrate(struct clk *clk, + unsigned long rate) +{ + unsigned long parent = clk_get_rate(clk->parent); + unsigned long calc; + unsigned best = 256; /* bigger than any value */ + unsigned div; + int ptr; + + for (ptr = 0; ptr < ARRAY_SIZE(armdiv); ptr++) { + div = armdiv[ptr]; + calc = parent / div; + if (calc <= rate && div < best) + best = div; + } + + return parent / best; +} + +static int s3c2443_armclk_setrate(struct clk *clk, unsigned long rate) +{ + unsigned long parent = clk_get_rate(clk->parent); + unsigned long calc; + unsigned div; + unsigned best = 256; /* bigger than any value */ + int ptr; + int val = -1; + + for (ptr = 0; ptr < ARRAY_SIZE(armdiv); ptr++) { + div = armdiv[ptr]; + calc = parent / div; + if (calc <= rate && div < best) { + best = div; + val = ptr; + } + } + + if (val >= 0) { + unsigned long clkcon0; + + clkcon0 = __raw_readl(S3C2443_CLKDIV0); + clkcon0 &= S3C2443_CLKDIV0_ARMDIV_MASK; + clkcon0 |= val << S3C2443_CLKDIV0_ARMDIV_SHIFT; + __raw_writel(clkcon0, S3C2443_CLKDIV0); + } + + return (val == -1) ? -EINVAL : 0; +} + static struct clk clk_armdiv = { .name = "armdiv", .id = -1, .parent = &clk_msysclk.clk, + .ops = &(struct clk_ops) { + .round_rate = s3c2443_armclk_roundrate, + .set_rate = s3c2443_armclk_setrate, + }, }; /* armclk @@ -619,26 +692,6 @@ static void __init s3c2443_clk_initparents(void) s3c_set_clksrc(init_list[ptr], true); } -/* armdiv divisor table */ - -static unsigned int armdiv[16] = { - [S3C2443_CLKDIV0_ARMDIV_1 >> S3C2443_CLKDIV0_ARMDIV_SHIFT] = 1, - [S3C2443_CLKDIV0_ARMDIV_2 >> S3C2443_CLKDIV0_ARMDIV_SHIFT] = 2, - [S3C2443_CLKDIV0_ARMDIV_3 >> S3C2443_CLKDIV0_ARMDIV_SHIFT] = 3, - [S3C2443_CLKDIV0_ARMDIV_4 >> S3C2443_CLKDIV0_ARMDIV_SHIFT] = 4, - [S3C2443_CLKDIV0_ARMDIV_6 >> S3C2443_CLKDIV0_ARMDIV_SHIFT] = 6, - [S3C2443_CLKDIV0_ARMDIV_8 >> S3C2443_CLKDIV0_ARMDIV_SHIFT] = 8, - [S3C2443_CLKDIV0_ARMDIV_12 >> S3C2443_CLKDIV0_ARMDIV_SHIFT] = 12, - [S3C2443_CLKDIV0_ARMDIV_16 >> S3C2443_CLKDIV0_ARMDIV_SHIFT] = 16, -}; - -static inline unsigned int s3c2443_fclk_div(unsigned long clkcon0) -{ - clkcon0 &= S3C2443_CLKDIV0_ARMDIV_MASK; - - return armdiv[clkcon0 >> S3C2443_CLKDIV0_ARMDIV_SHIFT]; -} - static inline unsigned long s3c2443_get_hdiv(unsigned long clkcon0) { clkcon0 &= S3C2443_CLKDIV0_HCLKDIV_MASK; -- cgit v1.1