From 70792bcfad5f4817fc067b7fdb0541d8b13b5502 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Mon, 30 Nov 2009 00:40:47 +0000 Subject: ARM: SAMSUNG: Move to plat-samsung Move the header to plat-samsung where it can be used by all the platforms, and readies it for the next round of clock updates where the clock code will be amalgamated. Signed-off-by: Ben Dooks --- arch/arm/plat-samsung/include/plat/clock.h | 89 ++++++++++++++++++++++++++++++ 1 file changed, 89 insertions(+) create mode 100644 arch/arm/plat-samsung/include/plat/clock.h (limited to 'arch/arm/plat-samsung/include/plat/clock.h') diff --git a/arch/arm/plat-samsung/include/plat/clock.h b/arch/arm/plat-samsung/include/plat/clock.h new file mode 100644 index 000000000000..d86af84b5b8c --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/clock.h @@ -0,0 +1,89 @@ +/* linux/arch/arm/plat-s3c/include/plat/clock.h + * + * Copyright (c) 2004-2005 Simtec Electronics + * http://www.simtec.co.uk/products/SWLINUX/ + * Written by Ben Dooks, + * + * 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 + +struct clk { + struct list_head list; + struct module *owner; + struct clk *parent; + const char *name; + int id; + int usage; + unsigned long rate; + unsigned long ctrlbit; + + int (*enable)(struct clk *, int enable); + int (*set_rate)(struct clk *c, unsigned long rate); + unsigned long (*get_rate)(struct clk *c); + unsigned long (*round_rate)(struct clk *c, unsigned long rate); + int (*set_parent)(struct clk *c, struct clk *parent); +}; + +/* other clocks which may be registered by board support */ + +extern struct clk s3c24xx_dclk0; +extern struct clk s3c24xx_dclk1; +extern struct clk s3c24xx_clkout0; +extern struct clk s3c24xx_clkout1; +extern struct clk s3c24xx_uclk; + +extern struct clk clk_usb_bus; + +/* core clock support */ + +extern struct clk clk_f; +extern struct clk clk_h; +extern struct clk clk_p; +extern struct clk clk_mpll; +extern struct clk clk_upll; +extern struct clk clk_epll; +extern struct clk clk_xtal; +extern struct clk clk_ext; + +/* S3C64XX specific clocks */ +extern struct clk clk_h2; +extern struct clk clk_27m; +extern struct clk clk_48m; + +/* exports for arch/arm/mach-s3c2410 + * + * Please DO NOT use these outside of arch/arm/mach-s3c2410 +*/ + +extern spinlock_t clocks_lock; + +extern int s3c2410_clkcon_enable(struct clk *clk, int enable); + +extern int s3c24xx_register_clock(struct clk *clk); +extern int s3c24xx_register_clocks(struct clk **clk, int nr_clks); + +extern int s3c24xx_register_baseclocks(unsigned long xtal); + +extern void s3c64xx_register_clocks(void); + +extern void s3c24xx_setup_clocks(unsigned long fclk, + unsigned long hclk, + unsigned long pclk); + +extern void s3c2410_setup_clocks(void); +extern void s3c2412_setup_clocks(void); +extern void s3c244x_setup_clocks(void); +extern void s3c2443_setup_clocks(void); + +/* S3C64XX specific functions and clocks */ + +extern int s3c64xx_sclk_ctrl(struct clk *clk, int enable); + +/* Init for pwm clock code */ + +extern void s3c_pwmclk_init(void); + -- cgit v1.2.3 From b3bf41be06634d69959a68a2b53e1ffc92f0d103 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Tue, 1 Dec 2009 01:24:37 +0000 Subject: ARM: SAMSUNG: Reduce size of struct clk. Reduce the size of struct clk by 12 bytes and make defining clocks with common implementation functions easier by moving the set_rate, get_rate, round_rate and set_parent calls into a new structure called 'struct clk_ops' and using that instead. This change does make a few clocks larger as they need their own clk_ops, but this is outweighed by the number of clocks with either no ops or having a common set of ops. Update all the users of this. Signed-off-by: Ben Dooks --- arch/arm/mach-s3c2412/clock.c | 52 +++++++----- arch/arm/mach-s3c2440/clock.c | 6 +- arch/arm/mach-s3c2442/clock.c | 6 +- arch/arm/mach-s3c2443/clock.c | 88 +++++++++++++------- arch/arm/plat-s3c/clock.c | 31 +++---- arch/arm/plat-s3c/pwm-clock.c | 94 ++++++++++----------- arch/arm/plat-s3c24xx/clock-dclk.c | 22 +++-- arch/arm/plat-s3c24xx/s3c244x-clock.c | 4 +- arch/arm/plat-s3c64xx/s3c6400-clock.c | 14 +++- arch/arm/plat-s5pc1xx/clock.c | 8 +- arch/arm/plat-s5pc1xx/s5pc100-clock.c | 126 +++++++++++++---------------- arch/arm/plat-samsung/clock-clksrc.c | 17 ++-- arch/arm/plat-samsung/include/plat/clock.h | 29 ++++++- 13 files changed, 286 insertions(+), 211 deletions(-) (limited to 'arch/arm/plat-samsung/include/plat/clock.h') diff --git a/arch/arm/mach-s3c2412/clock.c b/arch/arm/mach-s3c2412/clock.c index a037df5e1c2d..0c0505b025cb 100644 --- a/arch/arm/mach-s3c2412/clock.c +++ b/arch/arm/mach-s3c2412/clock.c @@ -124,7 +124,9 @@ static struct clk clk_usysclk = { .name = "usysclk", .id = -1, .parent = &clk_xtal, - .set_parent = s3c2412_setparent_usysclk, + .ops = &(struct clk_ops) { + .set_parent = s3c2412_setparent_usysclk, + }, }; static struct clk clk_mrefclk = { @@ -199,10 +201,12 @@ static int s3c2412_setrate_usbsrc(struct clk *clk, unsigned long rate) static struct clk clk_usbsrc = { .name = "usbsrc", .id = -1, - .get_rate = s3c2412_getrate_usbsrc, - .set_rate = s3c2412_setrate_usbsrc, - .round_rate = s3c2412_roundrate_usbsrc, - .set_parent = s3c2412_setparent_usbsrc, + .ops = &(struct clk_ops) { + .get_rate = s3c2412_getrate_usbsrc, + .set_rate = s3c2412_setrate_usbsrc, + .round_rate = s3c2412_roundrate_usbsrc, + .set_parent = s3c2412_setparent_usbsrc, + }, }; static int s3c2412_setparent_msysclk(struct clk *clk, struct clk *parent) @@ -225,7 +229,9 @@ static int s3c2412_setparent_msysclk(struct clk *clk, struct clk *parent) static struct clk clk_msysclk = { .name = "msysclk", .id = -1, - .set_parent = s3c2412_setparent_msysclk, + .ops = &(struct clk_ops) { + .set_parent = s3c2412_setparent_msysclk, + }, }; static int s3c2412_setparent_armclk(struct clk *clk, struct clk *parent) @@ -264,7 +270,9 @@ static struct clk clk_armclk = { .name = "armclk", .id = -1, .parent = &clk_msysclk, - .set_parent = s3c2412_setparent_armclk, + .ops = &(struct clk_ops) { + .set_parent = s3c2412_setparent_armclk, + }, }; /* these next clocks have an divider immediately after them, @@ -337,10 +345,12 @@ static int s3c2412_setrate_uart(struct clk *clk, unsigned long rate) static struct clk clk_uart = { .name = "uartclk", .id = -1, - .get_rate = s3c2412_getrate_uart, - .set_rate = s3c2412_setrate_uart, - .set_parent = s3c2412_setparent_uart, - .round_rate = s3c2412_roundrate_clksrc, + .ops = &(struct clk_ops) { + .get_rate = s3c2412_getrate_uart, + .set_rate = s3c2412_setrate_uart, + .set_parent = s3c2412_setparent_uart, + .round_rate = s3c2412_roundrate_clksrc, + }, }; static int s3c2412_setparent_i2s(struct clk *clk, struct clk *parent) @@ -388,10 +398,12 @@ static int s3c2412_setrate_i2s(struct clk *clk, unsigned long rate) static struct clk clk_i2s = { .name = "i2sclk", .id = -1, - .get_rate = s3c2412_getrate_i2s, - .set_rate = s3c2412_setrate_i2s, - .set_parent = s3c2412_setparent_i2s, - .round_rate = s3c2412_roundrate_clksrc, + .ops = &(struct clk_ops) { + .get_rate = s3c2412_getrate_i2s, + .set_rate = s3c2412_setrate_i2s, + .set_parent = s3c2412_setparent_i2s, + .round_rate = s3c2412_roundrate_clksrc, + }, }; static int s3c2412_setparent_cam(struct clk *clk, struct clk *parent) @@ -438,10 +450,12 @@ static int s3c2412_setrate_cam(struct clk *clk, unsigned long rate) static struct clk clk_cam = { .name = "camif-upll", /* same as 2440 name */ .id = -1, - .get_rate = s3c2412_getrate_cam, - .set_rate = s3c2412_setrate_cam, - .set_parent = s3c2412_setparent_cam, - .round_rate = s3c2412_roundrate_clksrc, + .ops = &(struct clk_ops) { + .get_rate = s3c2412_getrate_cam, + .set_rate = s3c2412_setrate_cam, + .set_parent = s3c2412_setparent_cam, + .round_rate = s3c2412_roundrate_clksrc, + }, }; /* standard clock definitions */ diff --git a/arch/arm/mach-s3c2440/clock.c b/arch/arm/mach-s3c2440/clock.c index d1c29b2537cd..3dc2426e2345 100644 --- a/arch/arm/mach-s3c2440/clock.c +++ b/arch/arm/mach-s3c2440/clock.c @@ -98,8 +98,10 @@ static struct clk s3c2440_clk_cam = { static struct clk s3c2440_clk_cam_upll = { .name = "camif-upll", .id = -1, - .set_rate = s3c2440_camif_upll_setrate, - .round_rate = s3c2440_camif_upll_round, + .ops = &(struct clk_ops) { + .set_rate = s3c2440_camif_upll_setrate, + .round_rate = s3c2440_camif_upll_round, + }, }; static struct clk s3c2440_clk_ac97 = { diff --git a/arch/arm/mach-s3c2442/clock.c b/arch/arm/mach-s3c2442/clock.c index ea1aa1f5157a..d9b692a12480 100644 --- a/arch/arm/mach-s3c2442/clock.c +++ b/arch/arm/mach-s3c2442/clock.c @@ -109,8 +109,10 @@ static struct clk s3c2442_clk_cam = { static struct clk s3c2442_clk_cam_upll = { .name = "camif-upll", .id = -1, - .set_rate = s3c2442_camif_upll_setrate, - .round_rate = s3c2442_camif_upll_round, + .ops = &(struct clk_ops) { + .set_rate = s3c2442_camif_upll_setrate, + .round_rate = s3c2442_camif_upll_round, + }, }; static int s3c2442_clk_add(struct sys_device *sysdev) diff --git a/arch/arm/mach-s3c2443/clock.c b/arch/arm/mach-s3c2443/clock.c index 2785d69c95b0..91db4f54bb33 100644 --- a/arch/arm/mach-s3c2443/clock.c +++ b/arch/arm/mach-s3c2443/clock.c @@ -187,7 +187,9 @@ static int s3c2443_setparent_epllref(struct clk *clk, struct clk *parent) static struct clk clk_epllref = { .name = "epllref", .id = -1, - .set_parent = s3c2443_setparent_epllref, + .ops = &(struct clk_ops) { + .set_parent = s3c2443_setparent_epllref, + }, }; static unsigned long s3c2443_getrate_mdivclk(struct clk *clk) @@ -205,7 +207,9 @@ static struct clk clk_mdivclk = { .name = "mdivclk", .parent = &clk_mpllref, .id = -1, - .get_rate = s3c2443_getrate_mdivclk, + .ops = &(struct clk_ops) { + .get_rate = s3c2443_getrate_mdivclk, + }, }; static int s3c2443_setparent_msysclk(struct clk *clk, struct clk *parent) @@ -232,7 +236,9 @@ static struct clk clk_msysclk = { .name = "msysclk", .parent = &clk_xtal, .id = -1, - .set_parent = s3c2443_setparent_msysclk, + .ops = &(struct clk_ops) { + .set_parent = s3c2443_setparent_msysclk, + }, }; /* armdiv @@ -273,7 +279,9 @@ static int s3c2443_setparent_armclk(struct clk *clk, struct clk *parent) static struct clk clk_arm = { .name = "armclk", .id = -1, - .set_parent = s3c2443_setparent_armclk, + .ops = &(struct clk_ops) { + .set_parent = s3c2443_setparent_armclk, + }, }; /* esysclk @@ -302,7 +310,9 @@ static struct clk clk_esysclk = { .name = "esysclk", .parent = &clk_epll, .id = -1, - .set_parent = s3c2443_setparent_esysclk, + .ops = &(struct clk_ops) { + .set_parent = s3c2443_setparent_esysclk, + }, }; /* uartclk @@ -341,9 +351,11 @@ static struct clk clk_uart = { .name = "uartclk", .id = -1, .parent = &clk_esysclk, - .get_rate = s3c2443_getrate_uart, - .set_rate = s3c2443_setrate_uart, - .round_rate = s3c2443_roundrate_clksrc16, + .ops = &(struct clk_ops) { + .get_rate = s3c2443_getrate_uart, + .set_rate = s3c2443_setrate_uart, + .round_rate = s3c2443_roundrate_clksrc16, + }, }; /* hsspi @@ -384,9 +396,11 @@ static struct clk clk_hsspi = { .parent = &clk_esysclk, .ctrlbit = S3C2443_SCLKCON_HSSPICLK, .enable = s3c2443_clkcon_enable_s, - .get_rate = s3c2443_getrate_hsspi, - .set_rate = s3c2443_setrate_hsspi, - .round_rate = s3c2443_roundrate_clksrc4, + .ops = &(struct clk_ops) { + .get_rate = s3c2443_getrate_hsspi, + .set_rate = s3c2443_setrate_hsspi, + .round_rate = s3c2443_roundrate_clksrc4, + }, }; /* usbhost @@ -426,9 +440,11 @@ static struct clk clk_usb_bus_host = { .parent = &clk_esysclk, .ctrlbit = S3C2443_SCLKCON_USBHOST, .enable = s3c2443_clkcon_enable_s, - .get_rate = s3c2443_getrate_usbhost, - .set_rate = s3c2443_setrate_usbhost, - .round_rate = s3c2443_roundrate_clksrc4, + .ops = &(struct clk_ops) { + .get_rate = s3c2443_getrate_usbhost, + .set_rate = s3c2443_setrate_usbhost, + .round_rate = s3c2443_roundrate_clksrc4, + }, }; /* clk_hsmcc_div @@ -468,9 +484,11 @@ static struct clk clk_hsmmc_div = { .name = "hsmmc-div", .id = -1, .parent = &clk_esysclk, - .get_rate = s3c2443_getrate_hsmmc_div, - .set_rate = s3c2443_setrate_hsmmc_div, - .round_rate = s3c2443_roundrate_clksrc4, + .ops = &(struct clk_ops) { + .get_rate = s3c2443_getrate_hsmmc_div, + .set_rate = s3c2443_setrate_hsmmc_div, + .round_rate = s3c2443_roundrate_clksrc4, + }, }; static int s3c2443_setparent_hsmmc(struct clk *clk, struct clk *parent) @@ -505,7 +523,9 @@ static struct clk clk_hsmmc = { .id = -1, .parent = &clk_hsmmc_div, .enable = s3c2443_enable_hsmmc, - .set_parent = s3c2443_setparent_hsmmc, + .ops = &(struct clk_ops) { + .set_parent = s3c2443_setparent_hsmmc, + }, }; /* i2s_eplldiv @@ -543,9 +563,11 @@ static struct clk clk_i2s_eplldiv = { .name = "i2s-eplldiv", .id = -1, .parent = &clk_esysclk, - .get_rate = s3c2443_getrate_i2s_eplldiv, - .set_rate = s3c2443_setrate_i2s_eplldiv, - .round_rate = s3c2443_roundrate_clksrc16, + .ops = &(struct clk_ops) { + .get_rate = s3c2443_getrate_i2s_eplldiv, + .set_rate = s3c2443_setrate_i2s_eplldiv, + .round_rate = s3c2443_roundrate_clksrc16, + }, }; /* i2s-ref @@ -578,7 +600,9 @@ static struct clk clk_i2s = { .parent = &clk_i2s_eplldiv, .ctrlbit = S3C2443_SCLKCON_I2SCLK, .enable = s3c2443_clkcon_enable_s, - .set_parent = s3c2443_setparent_i2s, + .ops = &(struct clk_ops) { + .set_parent = s3c2443_setparent_i2s, + }, }; /* cam-if @@ -618,9 +642,11 @@ static struct clk clk_cam = { .parent = &clk_esysclk, .ctrlbit = S3C2443_SCLKCON_CAMCLK, .enable = s3c2443_clkcon_enable_s, - .get_rate = s3c2443_getrate_cam, - .set_rate = s3c2443_setrate_cam, - .round_rate = s3c2443_roundrate_clksrc16, + .ops = &(struct clk_ops) { + .get_rate = s3c2443_getrate_cam, + .set_rate = s3c2443_setrate_cam, + .round_rate = s3c2443_roundrate_clksrc16, + }, }; /* display-if @@ -660,9 +686,11 @@ static struct clk clk_display = { .parent = &clk_esysclk, .ctrlbit = S3C2443_SCLKCON_DISPCLK, .enable = s3c2443_clkcon_enable_s, - .get_rate = s3c2443_getrate_display, - .set_rate = s3c2443_setrate_display, - .round_rate = s3c2443_roundrate_clksrc256, + .ops = &(struct clk_ops) { + .get_rate = s3c2443_getrate_display, + .set_rate = s3c2443_setrate_display, + .round_rate = s3c2443_roundrate_clksrc256, + }, }; /* prediv @@ -685,7 +713,9 @@ static struct clk clk_prediv = { .name = "prediv", .id = -1, .parent = &clk_msysclk, - .get_rate = s3c2443_prediv_getrate, + .ops = &(struct clk_ops) { + .get_rate = s3c2443_prediv_getrate, + }, }; /* standard clock definitions */ diff --git a/arch/arm/plat-s3c/clock.c b/arch/arm/plat-s3c/clock.c index 619cfa82dcab..fa91125c7e0e 100644 --- a/arch/arm/plat-s3c/clock.c +++ b/arch/arm/plat-s3c/clock.c @@ -150,8 +150,8 @@ unsigned long clk_get_rate(struct clk *clk) if (clk->rate != 0) return clk->rate; - if (clk->get_rate != NULL) - return (clk->get_rate)(clk); + if (clk->ops != NULL && clk->ops->get_rate != NULL) + return (clk->ops->get_rate)(clk); if (clk->parent != NULL) return clk_get_rate(clk->parent); @@ -161,8 +161,8 @@ unsigned long clk_get_rate(struct clk *clk) long clk_round_rate(struct clk *clk, unsigned long rate) { - if (!IS_ERR(clk) && clk->round_rate) - return (clk->round_rate)(clk, rate); + if (!IS_ERR(clk) && clk->ops && clk->ops->round_rate) + return (clk->ops->round_rate)(clk, rate); return rate; } @@ -178,13 +178,14 @@ int clk_set_rate(struct clk *clk, unsigned long rate) * the clock may have been made this way by choice. */ - WARN_ON(clk->set_rate == NULL); + WARN_ON(clk->ops == NULL); + WARN_ON(clk->ops && clk->ops->set_rate == NULL); - if (clk->set_rate == NULL) + if (clk->ops == NULL || clk->ops->set_rate == NULL) return -EINVAL; spin_lock(&clocks_lock); - ret = (clk->set_rate)(clk, rate); + ret = (clk->ops->set_rate)(clk, rate); spin_unlock(&clocks_lock); return ret; @@ -204,8 +205,8 @@ int clk_set_parent(struct clk *clk, struct clk *parent) spin_lock(&clocks_lock); - if (clk->set_parent) - ret = (clk->set_parent)(clk, parent); + if (clk->ops && clk->ops->set_parent) + ret = (clk->ops->set_parent)(clk, parent); spin_unlock(&clocks_lock); @@ -230,6 +231,10 @@ static int clk_default_setrate(struct clk *clk, unsigned long rate) return 0; } +static struct clk_ops clk_ops_def_setrate = { + .set_rate = clk_default_setrate, +}; + struct clk clk_xtal = { .name = "xtal", .id = -1, @@ -251,7 +256,7 @@ struct clk clk_epll = { struct clk clk_mpll = { .name = "mpll", .id = -1, - .set_rate = clk_default_setrate, + .ops = &clk_ops_def_setrate, }; struct clk clk_upll = { @@ -267,7 +272,6 @@ struct clk clk_f = { .rate = 0, .parent = &clk_mpll, .ctrlbit = 0, - .set_rate = clk_default_setrate, }; struct clk clk_h = { @@ -276,7 +280,7 @@ struct clk clk_h = { .rate = 0, .parent = NULL, .ctrlbit = 0, - .set_rate = clk_default_setrate, + .ops = &clk_ops_def_setrate, }; struct clk clk_p = { @@ -285,7 +289,7 @@ struct clk clk_p = { .rate = 0, .parent = NULL, .ctrlbit = 0, - .set_rate = clk_default_setrate, + .ops = &clk_ops_def_setrate, }; struct clk clk_usb_bus = { @@ -296,7 +300,6 @@ struct clk clk_usb_bus = { }; - struct clk s3c24xx_uclk = { .name = "uclk", .id = -1, diff --git a/arch/arm/plat-s3c/pwm-clock.c b/arch/arm/plat-s3c/pwm-clock.c index a318215ab535..1808fa88609a 100644 --- a/arch/arm/plat-s3c/pwm-clock.c +++ b/arch/arm/plat-s3c/pwm-clock.c @@ -130,20 +130,22 @@ static int clk_pwm_scaler_set_rate(struct clk *clk, unsigned long rate) return 0; } +static struct clk_ops clk_pwm_scaler_ops = { + .get_rate = clk_pwm_scaler_get_rate, + .set_rate = clk_pwm_scaler_set_rate, + .round_rate = clk_pwm_scaler_round_rate, +}; + static struct clk clk_timer_scaler[] = { [0] = { .name = "pwm-scaler0", .id = -1, - .get_rate = clk_pwm_scaler_get_rate, - .set_rate = clk_pwm_scaler_set_rate, - .round_rate = clk_pwm_scaler_round_rate, + .ops = &clk_pwm_scaler_ops, }, [1] = { .name = "pwm-scaler1", .id = -1, - .get_rate = clk_pwm_scaler_get_rate, - .set_rate = clk_pwm_scaler_set_rate, - .round_rate = clk_pwm_scaler_round_rate, + .ops = &clk_pwm_scaler_ops, }, }; @@ -256,50 +258,46 @@ static int clk_pwm_tdiv_set_rate(struct clk *clk, unsigned long rate) return 0; } +static struct clk_ops clk_tdiv_ops = { + .get_rate = clk_pwm_tdiv_get_rate, + .set_rate = clk_pwm_tdiv_set_rate, + .round_rate = clk_pwm_tdiv_round_rate, +}; + static struct pwm_tdiv_clk clk_timer_tdiv[] = { [0] = { .clk = { - .name = "pwm-tdiv", - .parent = &clk_timer_scaler[0], - .get_rate = clk_pwm_tdiv_get_rate, - .set_rate = clk_pwm_tdiv_set_rate, - .round_rate = clk_pwm_tdiv_round_rate, + .name = "pwm-tdiv", + .ops = &clk_tdiv_ops, + .parent = &clk_timer_scaler[0], }, }, [1] = { .clk = { - .name = "pwm-tdiv", - .parent = &clk_timer_scaler[0], - .get_rate = clk_pwm_tdiv_get_rate, - .set_rate = clk_pwm_tdiv_set_rate, - .round_rate = clk_pwm_tdiv_round_rate, + .name = "pwm-tdiv", + .ops = &clk_tdiv_ops, + .parent = &clk_timer_scaler[0], } }, [2] = { .clk = { - .name = "pwm-tdiv", - .parent = &clk_timer_scaler[1], - .get_rate = clk_pwm_tdiv_get_rate, - .set_rate = clk_pwm_tdiv_set_rate, - .round_rate = clk_pwm_tdiv_round_rate, + .name = "pwm-tdiv", + .ops = &clk_tdiv_ops, + .parent = &clk_timer_scaler[1], }, }, [3] = { .clk = { - .name = "pwm-tdiv", - .parent = &clk_timer_scaler[1], - .get_rate = clk_pwm_tdiv_get_rate, - .set_rate = clk_pwm_tdiv_set_rate, - .round_rate = clk_pwm_tdiv_round_rate, + .name = "pwm-tdiv", + .ops = &clk_tdiv_ops, + .parent = &clk_timer_scaler[1], }, }, [4] = { .clk = { - .name = "pwm-tdiv", - .parent = &clk_timer_scaler[1], - .get_rate = clk_pwm_tdiv_get_rate, - .set_rate = clk_pwm_tdiv_set_rate, - .round_rate = clk_pwm_tdiv_round_rate, + .name = "pwm-tdiv", + .ops = &clk_tdiv_ops, + .parent = &clk_timer_scaler[1], }, }, }; @@ -356,31 +354,35 @@ static int clk_pwm_tin_set_parent(struct clk *clk, struct clk *parent) return 0; } +static struct clk_ops clk_tin_ops = { + .set_parent = clk_pwm_tin_set_parent, +}; + static struct clk clk_tin[] = { [0] = { - .name = "pwm-tin", - .id = 0, - .set_parent = clk_pwm_tin_set_parent, + .name = "pwm-tin", + .id = 0, + .ops = &clk_tin_ops, }, [1] = { - .name = "pwm-tin", - .id = 1, - .set_parent = clk_pwm_tin_set_parent, + .name = "pwm-tin", + .id = 1, + .ops = &clk_tin_ops, }, [2] = { - .name = "pwm-tin", - .id = 2, - .set_parent = clk_pwm_tin_set_parent, + .name = "pwm-tin", + .id = 2, + .ops = &clk_tin_ops, }, [3] = { - .name = "pwm-tin", - .id = 3, - .set_parent = clk_pwm_tin_set_parent, + .name = "pwm-tin", + .id = 3, + .ops = &clk_tin_ops, }, [4] = { - .name = "pwm-tin", - .id = 4, - .set_parent = clk_pwm_tin_set_parent, + .name = "pwm-tin", + .id = 4, + .ops = &clk_tin_ops, }, }; diff --git a/arch/arm/plat-s3c24xx/clock-dclk.c b/arch/arm/plat-s3c24xx/clock-dclk.c index ac061a1bcb37..cf97caafe56b 100644 --- a/arch/arm/plat-s3c24xx/clock-dclk.c +++ b/arch/arm/plat-s3c24xx/clock-dclk.c @@ -161,14 +161,18 @@ static int s3c24xx_clkout_setparent(struct clk *clk, struct clk *parent) /* external clock definitions */ +static struct clk_ops dclk_ops = { + .set_parent = s3c24xx_dclk_setparent, + .set_rate = s3c24xx_set_dclk_rate, + .round_rate = s3c24xx_round_dclk_rate, +}; + struct clk s3c24xx_dclk0 = { .name = "dclk0", .id = -1, .ctrlbit = S3C2410_DCLKCON_DCLK0EN, .enable = s3c24xx_dclk_enable, - .set_parent = s3c24xx_dclk_setparent, - .set_rate = s3c24xx_set_dclk_rate, - .round_rate = s3c24xx_round_dclk_rate, + .ops = &dclk_ops, }; struct clk s3c24xx_dclk1 = { @@ -176,19 +180,21 @@ struct clk s3c24xx_dclk1 = { .id = -1, .ctrlbit = S3C2410_DCLKCON_DCLK1EN, .enable = s3c24xx_dclk_enable, - .set_parent = s3c24xx_dclk_setparent, - .set_rate = s3c24xx_set_dclk_rate, - .round_rate = s3c24xx_round_dclk_rate, + .ops = &dclk_ops, +}; + +static struct clk_ops clkout_ops = { + .set_parent = s3c24xx_clkout_setparent, }; struct clk s3c24xx_clkout0 = { .name = "clkout0", .id = -1, - .set_parent = s3c24xx_clkout_setparent, + .ops = &clkout_ops, }; struct clk s3c24xx_clkout1 = { .name = "clkout1", .id = -1, - .set_parent = s3c24xx_clkout_setparent, + .ops = &clkout_ops, }; diff --git a/arch/arm/plat-s3c24xx/s3c244x-clock.c b/arch/arm/plat-s3c24xx/s3c244x-clock.c index 79371091aa38..f8d96130d1d1 100644 --- a/arch/arm/plat-s3c24xx/s3c244x-clock.c +++ b/arch/arm/plat-s3c24xx/s3c244x-clock.c @@ -68,7 +68,9 @@ static int s3c2440_setparent_armclk(struct clk *clk, struct clk *parent) static struct clk clk_arm = { .name = "armclk", .id = -1, - .set_parent = s3c2440_setparent_armclk, + .ops = &(struct clk_ops) { + .set_parent = s3c2440_setparent_armclk, + }, }; static int s3c244x_clk_add(struct sys_device *sysdev) diff --git a/arch/arm/plat-s3c64xx/s3c6400-clock.c b/arch/arm/plat-s3c64xx/s3c6400-clock.c index 20af0c29979a..f85406a11385 100644 --- a/arch/arm/plat-s3c64xx/s3c6400-clock.c +++ b/arch/arm/plat-s3c64xx/s3c6400-clock.c @@ -165,9 +165,11 @@ static struct clk clk_arm = { .name = "armclk", .id = -1, .parent = &clk_mout_apll.clk, - .get_rate = s3c64xx_clk_arm_get_rate, - .set_rate = s3c64xx_clk_arm_set_rate, - .round_rate = s3c64xx_clk_arm_round_rate, + .ops = &(struct clk_ops) { + .get_rate = s3c64xx_clk_arm_get_rate, + .set_rate = s3c64xx_clk_arm_set_rate, + .round_rate = s3c64xx_clk_arm_round_rate, + }, }; static unsigned long s3c64xx_clk_doutmpll_get_rate(struct clk *clk) @@ -182,11 +184,15 @@ static unsigned long s3c64xx_clk_doutmpll_get_rate(struct clk *clk) return rate; } +static struct clk_ops clk_dout_ops = { + .get_rate = s3c64xx_clk_doutmpll_get_rate, +}; + static struct clk clk_dout_mpll = { .name = "dout_mpll", .id = -1, .parent = &clk_mout_mpll.clk, - .get_rate = s3c64xx_clk_doutmpll_get_rate, + .ops = &clk_dout_ops, }; static struct clk *clkset_spi_mmc_list[] = { diff --git a/arch/arm/plat-s5pc1xx/clock.c b/arch/arm/plat-s5pc1xx/clock.c index 26c21d849790..2f4d8d4c4e1c 100644 --- a/arch/arm/plat-s5pc1xx/clock.c +++ b/arch/arm/plat-s5pc1xx/clock.c @@ -70,6 +70,10 @@ static int clk_default_setrate(struct clk *clk, unsigned long rate) return 0; } +static struct clk_ops clk_ops_default_setrate = { + .set_rate = clk_default_setrate, +}; + static int clk_dummy_enable(struct clk *clk, int enable) { return 0; @@ -81,8 +85,8 @@ struct clk clk_hd0 = { .rate = 0, .parent = NULL, .ctrlbit = 0, - .set_rate = clk_default_setrate, .enable = clk_dummy_enable, + .ops = &clk_ops_default_setrate, }; struct clk clk_pd0 = { @@ -91,7 +95,7 @@ struct clk clk_pd0 = { .rate = 0, .parent = NULL, .ctrlbit = 0, - .set_rate = clk_default_setrate, + .ops = &clk_ops_default_setrate, .enable = clk_dummy_enable, }; diff --git a/arch/arm/plat-s5pc1xx/s5pc100-clock.c b/arch/arm/plat-s5pc1xx/s5pc100-clock.c index b436d44510c8..16f0b9077390 100644 --- a/arch/arm/plat-s5pc1xx/s5pc100-clock.c +++ b/arch/arm/plat-s5pc1xx/s5pc100-clock.c @@ -111,7 +111,9 @@ static struct clk clk_dout_apll = { .name = "dout_apll", .id = -1, .parent = &clk_mout_apll.clk, - .get_rate = s5pc100_clk_dout_apll_get_rate, + .ops = &(struct clk_ops) { + .get_rate = s5pc100_clk_dout_apll_get_rate, + }, }; static unsigned long s5pc100_clk_arm_get_rate(struct clk *clk) @@ -165,9 +167,11 @@ static struct clk clk_arm = { .name = "armclk", .id = -1, .parent = &clk_dout_apll, - .get_rate = s5pc100_clk_arm_get_rate, - .set_rate = s5pc100_clk_arm_set_rate, - .round_rate = s5pc100_clk_arm_round_rate, + .ops = &(struct clk_ops) { + .get_rate = s5pc100_clk_arm_get_rate, + .set_rate = s5pc100_clk_arm_set_rate, + .round_rate = s5pc100_clk_arm_round_rate, + }, }; static unsigned long s5pc100_clk_dout_d0_bus_get_rate(struct clk *clk) @@ -185,7 +189,9 @@ static struct clk clk_dout_d0_bus = { .name = "dout_d0_bus", .id = -1, .parent = &clk_arm, - .get_rate = s5pc100_clk_dout_d0_bus_get_rate, + .ops = &(struct clk_ops) { + .get_rate = s5pc100_clk_dout_d0_bus_get_rate, + }, }; static unsigned long s5pc100_clk_dout_pclkd0_get_rate(struct clk *clk) @@ -203,7 +209,9 @@ static struct clk clk_dout_pclkd0 = { .name = "dout_pclkd0", .id = -1, .parent = &clk_dout_d0_bus, - .get_rate = s5pc100_clk_dout_pclkd0_get_rate, + .ops = &(struct clk_ops) { + .get_rate = s5pc100_clk_dout_pclkd0_get_rate, + }, }; static unsigned long s5pc100_clk_dout_apll2_get_rate(struct clk *clk) @@ -221,7 +229,9 @@ static struct clk clk_dout_apll2 = { .name = "dout_apll2", .id = -1, .parent = &clk_mout_apll.clk, - .get_rate = s5pc100_clk_dout_apll2_get_rate, + .ops = &(struct clk_ops) { + .get_rate = s5pc100_clk_dout_apll2_get_rate, + }, }; /* MPLL */ @@ -284,7 +294,9 @@ static struct clk clk_dout_d1_bus = { .name = "dout_d1_bus", .id = -1, .parent = &clk_mout_am.clk, - .get_rate = s5pc100_clk_dout_d1_bus_get_rate, + .ops = &(struct clk_ops) { + .get_rate = s5pc100_clk_dout_d1_bus_get_rate, + }, }; static struct clk *clkset_onenand_list[] = { @@ -325,7 +337,9 @@ static struct clk clk_dout_pclkd1 = { .name = "dout_pclkd1", .id = -1, .parent = &clk_dout_d1_bus, - .get_rate = s5pc100_clk_dout_pclkd1_get_rate, + .ops = &(struct clk_ops) { + .get_rate = s5pc100_clk_dout_pclkd1_get_rate, + }, }; static unsigned long s5pc100_clk_dout_mpll2_get_rate(struct clk *clk) @@ -345,7 +359,9 @@ static struct clk clk_dout_mpll2 = { .name = "dout_mpll2", .id = -1, .parent = &clk_mout_am.clk, - .get_rate = s5pc100_clk_dout_mpll2_get_rate, + .ops = &(struct clk_ops) { + .get_rate = s5pc100_clk_dout_mpll2_get_rate, + }, }; static unsigned long s5pc100_clk_dout_cam_get_rate(struct clk *clk) @@ -365,7 +381,9 @@ static struct clk clk_dout_cam = { .name = "dout_cam", .id = -1, .parent = &clk_dout_mpll2, - .get_rate = s5pc100_clk_dout_cam_get_rate, + .ops = &(struct clk_ops) { + .get_rate = s5pc100_clk_dout_cam_get_rate, + }, }; static unsigned long s5pc100_clk_dout_mpll_get_rate(struct clk *clk) @@ -385,7 +403,9 @@ static struct clk clk_dout_mpll = { .name = "dout_mpll", .id = -1, .parent = &clk_mout_am.clk, - .get_rate = s5pc100_clk_dout_mpll_get_rate, + .ops = &(struct clk_ops) { + .get_rate = s5pc100_clk_dout_mpll_get_rate, + }, }; /* EPLL */ @@ -540,6 +560,13 @@ static unsigned long s5pc100_roundrate_clksrc(struct clk *clk, return rate; } +static struct clk_ops s5pc100_clksrc_ops = { + .set_parent = s5pc100_setparent_clksrc, + .get_rate = s5pc100_getrate_clksrc, + .set_rate = s5pc100_setrate_clksrc, + .round_rate = s5pc100_roundrate_clksrc, +}; + static struct clk *clkset_spi_list[] = { &clk_mout_epll.clk, &clk_dout_mpll2, @@ -558,10 +585,7 @@ static struct clksrc_clk clk_spi0 = { .id = 0, .ctrlbit = S5PC100_CLKGATE_SCLK0_SPI0, .enable = s5pc100_sclk0_ctrl, - .set_parent = s5pc100_setparent_clksrc, - .get_rate = s5pc100_getrate_clksrc, - .set_rate = s5pc100_setrate_clksrc, - .round_rate = s5pc100_roundrate_clksrc, + }, .shift = S5PC100_CLKSRC1_SPI0_SHIFT, .mask = S5PC100_CLKSRC1_SPI0_MASK, @@ -577,10 +601,7 @@ static struct clksrc_clk clk_spi1 = { .id = 1, .ctrlbit = S5PC100_CLKGATE_SCLK0_SPI1, .enable = s5pc100_sclk0_ctrl, - .set_parent = s5pc100_setparent_clksrc, - .get_rate = s5pc100_getrate_clksrc, - .set_rate = s5pc100_setrate_clksrc, - .round_rate = s5pc100_roundrate_clksrc, + .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC1_SPI1_SHIFT, .mask = S5PC100_CLKSRC1_SPI1_MASK, @@ -596,10 +617,7 @@ static struct clksrc_clk clk_spi2 = { .id = 2, .ctrlbit = S5PC100_CLKGATE_SCLK0_SPI2, .enable = s5pc100_sclk0_ctrl, - .set_parent = s5pc100_setparent_clksrc, - .get_rate = s5pc100_getrate_clksrc, - .set_rate = s5pc100_setrate_clksrc, - .round_rate = s5pc100_roundrate_clksrc, + .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC1_SPI2_SHIFT, .mask = S5PC100_CLKSRC1_SPI2_MASK, @@ -625,10 +643,7 @@ static struct clksrc_clk clk_uart_uclk1 = { .id = -1, .ctrlbit = S5PC100_CLKGATE_SCLK0_UART, .enable = s5pc100_sclk0_ctrl, - .set_parent = s5pc100_setparent_clksrc, - .get_rate = s5pc100_getrate_clksrc, - .set_rate = s5pc100_setrate_clksrc, - .round_rate = s5pc100_roundrate_clksrc, + .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC1_UART_SHIFT, .mask = S5PC100_CLKSRC1_UART_MASK, @@ -683,10 +698,7 @@ static struct clksrc_clk clk_audio0 = { .id = 0, .ctrlbit = S5PC100_CLKGATE_SCLK1_AUDIO0, .enable = s5pc100_sclk1_ctrl, - .set_parent = s5pc100_setparent_clksrc, - .get_rate = s5pc100_getrate_clksrc, - .set_rate = s5pc100_setrate_clksrc, - .round_rate = s5pc100_roundrate_clksrc, + .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC3_AUDIO0_SHIFT, .mask = S5PC100_CLKSRC3_AUDIO0_MASK, @@ -716,10 +728,7 @@ static struct clksrc_clk clk_audio1 = { .id = 1, .ctrlbit = S5PC100_CLKGATE_SCLK1_AUDIO1, .enable = s5pc100_sclk1_ctrl, - .set_parent = s5pc100_setparent_clksrc, - .get_rate = s5pc100_getrate_clksrc, - .set_rate = s5pc100_setrate_clksrc, - .round_rate = s5pc100_roundrate_clksrc, + .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC3_AUDIO1_SHIFT, .mask = S5PC100_CLKSRC3_AUDIO1_MASK, @@ -748,10 +757,7 @@ static struct clksrc_clk clk_audio2 = { .id = 2, .ctrlbit = S5PC100_CLKGATE_SCLK1_AUDIO2, .enable = s5pc100_sclk1_ctrl, - .set_parent = s5pc100_setparent_clksrc, - .get_rate = s5pc100_getrate_clksrc, - .set_rate = s5pc100_setrate_clksrc, - .round_rate = s5pc100_roundrate_clksrc, + .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC3_AUDIO2_SHIFT, .mask = S5PC100_CLKSRC3_AUDIO2_MASK, @@ -801,10 +807,7 @@ static struct clksrc_clk clk_lcd = { .id = -1, .ctrlbit = S5PC100_CLKGATE_SCLK1_LCD, .enable = s5pc100_sclk1_ctrl, - .set_parent = s5pc100_setparent_clksrc, - .get_rate = s5pc100_getrate_clksrc, - .set_rate = s5pc100_setrate_clksrc, - .round_rate = s5pc100_roundrate_clksrc, + .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC2_LCD_SHIFT, .mask = S5PC100_CLKSRC2_LCD_MASK, @@ -820,10 +823,7 @@ static struct clksrc_clk clk_fimc0 = { .id = 0, .ctrlbit = S5PC100_CLKGATE_SCLK1_FIMC0, .enable = s5pc100_sclk1_ctrl, - .set_parent = s5pc100_setparent_clksrc, - .get_rate = s5pc100_getrate_clksrc, - .set_rate = s5pc100_setrate_clksrc, - .round_rate = s5pc100_roundrate_clksrc, + .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC2_FIMC0_SHIFT, .mask = S5PC100_CLKSRC2_FIMC0_MASK, @@ -839,10 +839,7 @@ static struct clksrc_clk clk_fimc1 = { .id = 1, .ctrlbit = S5PC100_CLKGATE_SCLK1_FIMC1, .enable = s5pc100_sclk1_ctrl, - .set_parent = s5pc100_setparent_clksrc, - .get_rate = s5pc100_getrate_clksrc, - .set_rate = s5pc100_setrate_clksrc, - .round_rate = s5pc100_roundrate_clksrc, + .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC2_FIMC1_SHIFT, .mask = S5PC100_CLKSRC2_FIMC1_MASK, @@ -858,10 +855,7 @@ static struct clksrc_clk clk_fimc2 = { .id = 2, .ctrlbit = S5PC100_CLKGATE_SCLK1_FIMC2, .enable = s5pc100_sclk1_ctrl, - .set_parent = s5pc100_setparent_clksrc, - .get_rate = s5pc100_getrate_clksrc, - .set_rate = s5pc100_setrate_clksrc, - .round_rate = s5pc100_roundrate_clksrc, + .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC2_FIMC2_SHIFT, .mask = S5PC100_CLKSRC2_FIMC2_MASK, @@ -889,10 +883,7 @@ static struct clksrc_clk clk_mmc0 = { .id = 0, .ctrlbit = S5PC100_CLKGATE_SCLK0_MMC0, .enable = s5pc100_sclk0_ctrl, - .set_parent = s5pc100_setparent_clksrc, - .get_rate = s5pc100_getrate_clksrc, - .set_rate = s5pc100_setrate_clksrc, - .round_rate = s5pc100_roundrate_clksrc, + .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC2_MMC0_SHIFT, .mask = S5PC100_CLKSRC2_MMC0_MASK, @@ -908,10 +899,7 @@ static struct clksrc_clk clk_mmc1 = { .id = 1, .ctrlbit = S5PC100_CLKGATE_SCLK0_MMC1, .enable = s5pc100_sclk0_ctrl, - .set_parent = s5pc100_setparent_clksrc, - .get_rate = s5pc100_getrate_clksrc, - .set_rate = s5pc100_setrate_clksrc, - .round_rate = s5pc100_roundrate_clksrc, + .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC2_MMC1_SHIFT, .mask = S5PC100_CLKSRC2_MMC1_MASK, @@ -927,10 +915,7 @@ static struct clksrc_clk clk_mmc2 = { .id = 2, .ctrlbit = S5PC100_CLKGATE_SCLK0_MMC2, .enable = s5pc100_sclk0_ctrl, - .set_parent = s5pc100_setparent_clksrc, - .get_rate = s5pc100_getrate_clksrc, - .set_rate = s5pc100_setrate_clksrc, - .round_rate = s5pc100_roundrate_clksrc, + .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC2_MMC2_SHIFT, .mask = S5PC100_CLKSRC2_MMC2_MASK, @@ -959,10 +944,7 @@ static struct clksrc_clk clk_usbhost = { .id = -1, .ctrlbit = S5PC100_CLKGATE_SCLK0_USBHOST, .enable = s5pc100_sclk0_ctrl, - .set_parent = s5pc100_setparent_clksrc, - .get_rate = s5pc100_getrate_clksrc, - .set_rate = s5pc100_setrate_clksrc, - .round_rate = s5pc100_roundrate_clksrc, + .ops = &s5pc100_clksrc_ops, }, .shift = S5PC100_CLKSRC1_UHOST_SHIFT, .mask = S5PC100_CLKSRC1_UHOST_MASK, diff --git a/arch/arm/plat-samsung/clock-clksrc.c b/arch/arm/plat-samsung/clock-clksrc.c index 5872f0b62b7c..ad4e8723a811 100644 --- a/arch/arm/plat-samsung/clock-clksrc.c +++ b/arch/arm/plat-samsung/clock-clksrc.c @@ -150,20 +150,21 @@ void __init_or_cpufreq s3c_set_clksrc(struct clksrc_clk *clk) clk_get_rate(&clk->clk)); } +static struct clk_ops clksrc_ops = { + .set_parent = s3c_setparent_clksrc, + .get_rate = s3c_getrate_clksrc, + .set_rate = s3c_setrate_clksrc, + .round_rate = s3c_roundrate_clksrc, +}; + void __init s3c_register_clksrc(struct clksrc_clk *clksrc, int size) { int ret; for (; size > 0; size--, clksrc++) { /* fill in the default functions */ - if (!clksrc->clk.set_parent) - clksrc->clk.set_parent = s3c_setparent_clksrc; - if (!clksrc->clk.get_rate) - clksrc->clk.get_rate = s3c_getrate_clksrc; - if (!clksrc->clk.set_rate) - clksrc->clk.set_rate = s3c_setrate_clksrc; - if (!clksrc->clk.round_rate) - clksrc->clk.round_rate = s3c_roundrate_clksrc; + if (!clksrc->clk.ops) + clksrc->clk.ops = &clksrc_ops; s3c_set_clksrc(clksrc); diff --git a/arch/arm/plat-samsung/include/plat/clock.h b/arch/arm/plat-samsung/include/plat/clock.h index d86af84b5b8c..43324af24c6e 100644 --- a/arch/arm/plat-samsung/include/plat/clock.h +++ b/arch/arm/plat-samsung/include/plat/clock.h @@ -11,6 +11,30 @@ #include +struct clk; + +/** + * struct clk_ops - standard clock operations + * @set_rate: set the clock rate, see clk_set_rate(). + * @get_rate: get the clock rate, see clk_get_rate(). + * @round_rate: round a given clock rate, see clk_round_rate(). + * @set_parent: set the clock's parent, see clk_set_parent(). + * + * Group the common clock implementations together so that we + * don't have to keep setting the same fiels again. We leave + * enable in struct clk. + * + * Adding an extra layer of indirection into the process should + * not be a problem as it is unlikely these operations are going + * to need to be called quickly. + */ +struct clk_ops { + int (*set_rate)(struct clk *c, unsigned long rate); + unsigned long (*get_rate)(struct clk *c); + unsigned long (*round_rate)(struct clk *c, unsigned long rate); + int (*set_parent)(struct clk *c, struct clk *parent); +}; + struct clk { struct list_head list; struct module *owner; @@ -21,11 +45,8 @@ struct clk { unsigned long rate; unsigned long ctrlbit; + struct clk_ops *ops; int (*enable)(struct clk *, int enable); - int (*set_rate)(struct clk *c, unsigned long rate); - unsigned long (*get_rate)(struct clk *c); - unsigned long (*round_rate)(struct clk *c, unsigned long rate); - int (*set_parent)(struct clk *c, struct clk *parent); }; /* other clocks which may be registered by board support */ -- cgit v1.2.3 From 1d9f13c49ed750260f40317629bdd66160a3ac16 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Wed, 6 Jan 2010 01:21:38 +0900 Subject: ARM: SAMSUNG: Add call to register array of clocks Add s3c_register_clocks() to register an array of clocks, printing an error message if there is a problem. Replace all points in the code where this could be used. Signed-off-by: Ben Dooks --- arch/arm/mach-s3c2443/clock.c | 9 +-------- arch/arm/plat-s3c/pwm-clock.c | 18 ++++-------------- arch/arm/plat-s3c64xx/clock.c | 10 +--------- arch/arm/plat-s5pc1xx/clock.c | 12 ++---------- arch/arm/plat-samsung/clock.c | 22 ++++++++++++++++++++++ arch/arm/plat-samsung/include/plat/clock.h | 2 ++ 6 files changed, 32 insertions(+), 41 deletions(-) (limited to 'arch/arm/plat-samsung/include/plat/clock.h') diff --git a/arch/arm/mach-s3c2443/clock.c b/arch/arm/mach-s3c2443/clock.c index 91db4f54bb33..3eb8b935d64c 100644 --- a/arch/arm/mach-s3c2443/clock.c +++ b/arch/arm/mach-s3c2443/clock.c @@ -1104,14 +1104,7 @@ void __init s3c2443_init_clocks(int xtal) /* register clocks from clock array */ - clkp = init_clocks; - for (ptr = 0; ptr < ARRAY_SIZE(init_clocks); ptr++, clkp++) { - ret = s3c24xx_register_clock(clkp); - if (ret < 0) { - printk(KERN_ERR "Failed to register clock %s (%d)\n", - clkp->name, ret); - } - } + s3c_register_clocks(init_clocks, ARRAY_SIZE(init_clocks)); /* We must be careful disabling the clocks we are not intending to * be using at boot time, as subsystems such as the LCD which do diff --git a/arch/arm/plat-s3c/pwm-clock.c b/arch/arm/plat-s3c/pwm-clock.c index 1808fa88609a..46c9381e083b 100644 --- a/arch/arm/plat-s3c/pwm-clock.c +++ b/arch/arm/plat-s3c/pwm-clock.c @@ -430,25 +430,15 @@ __init void s3c_pwmclk_init(void) return; } - for (clk = 0; clk < ARRAY_SIZE(clk_timer_scaler); clk++) { + for (clk = 0; clk < ARRAY_SIZE(clk_timer_scaler); clk++) clk_timer_scaler[clk].parent = clk_timers; - ret = s3c24xx_register_clock(&clk_timer_scaler[clk]); - if (ret < 0) { - printk(KERN_ERR "error adding pwm scaler%d clock\n", clk); - return; - } - } - for (clk = 0; clk < ARRAY_SIZE(clk_timer_tclk); clk++) { - ret = s3c24xx_register_clock(&clk_timer_tclk[clk]); - if (ret < 0) { - printk(KERN_ERR "error adding pww tclk%d\n", clk); - return; - } - } + s3c_register_clocks(clk_timer_scaler, ARRAY_SIZE(clk_timer_scaler)); + s3c_register_clocks(clk_timer_tclk, ARRAY_SIZE(clk_timer_tclk)); for (clk = 0; clk < ARRAY_SIZE(clk_timer_tdiv); clk++) { ret = clk_pwm_tdiv_register(clk); + if (ret < 0) { printk(KERN_ERR "error adding pwm%d tdiv clock\n", clk); return; diff --git a/arch/arm/plat-s3c64xx/clock.c b/arch/arm/plat-s3c64xx/clock.c index 7a36e899360d..ae5883c00e7a 100644 --- a/arch/arm/plat-s3c64xx/clock.c +++ b/arch/arm/plat-s3c64xx/clock.c @@ -274,15 +274,7 @@ void __init s3c64xx_register_clocks(void) int ptr; s3c24xx_register_clocks(clks, ARRAY_SIZE(clks)); - - clkp = init_clocks; - for (ptr = 0; ptr < ARRAY_SIZE(init_clocks); ptr++, clkp++) { - ret = s3c24xx_register_clock(clkp); - if (ret < 0) { - printk(KERN_ERR "Failed to register clock %s (%d)\n", - clkp->name, ret); - } - } + s3c_register_clocks(init_clocks, ARRAY_SIZE(init_clocks)); clkp = init_clocks_disable; for (ptr = 0; ptr < ARRAY_SIZE(init_clocks_disable); ptr++, clkp++) { diff --git a/arch/arm/plat-s5pc1xx/clock.c b/arch/arm/plat-s5pc1xx/clock.c index 2f4d8d4c4e1c..0aff16d1cc2c 100644 --- a/arch/arm/plat-s5pc1xx/clock.c +++ b/arch/arm/plat-s5pc1xx/clock.c @@ -704,16 +704,8 @@ void __init s5pc1xx_register_clocks(void) s3c24xx_register_clocks(clks, ARRAY_SIZE(clks)); - clkp = s5pc100_init_clocks; - size = ARRAY_SIZE(s5pc100_init_clocks); - - for (ptr = 0; ptr < size; ptr++, clkp++) { - ret = s3c24xx_register_clock(clkp); - if (ret < 0) { - printk(KERN_ERR "Failed to register clock %s (%d)\n", - clkp->name, ret); - } - } + s3c_register_clocks(s5pc100_init_clocks, + ARRAY_SIZE(s5pc100_init_clocks)); clkp = s5pc100_init_clocks_disable; size = ARRAY_SIZE(s5pc100_init_clocks_disable); diff --git a/arch/arm/plat-samsung/clock.c b/arch/arm/plat-samsung/clock.c index fa91125c7e0e..9194af91e4b7 100644 --- a/arch/arm/plat-samsung/clock.c +++ b/arch/arm/plat-samsung/clock.c @@ -336,6 +336,28 @@ int s3c24xx_register_clocks(struct clk **clks, int nr_clks) return fails; } +/** + * s3c_register_clocks() - register an array of clocks + * @clkp: Pointer to the first clock in the array. + * @nr_clks: Number of clocks to register. + * + * Call s3c24xx_register_clock() on the @clkp array given, printing an + * error if it fails to register the clock (unlikely). + */ +void __initdata s3c_register_clocks(struct clk *clkp, int nr_clks) +{ + int ret; + + for (; nr_clks > 0; nr_clks--, clkp++) { + ret = s3c24xx_register_clock(clkp); + + if (ret < 0) { + printk(KERN_ERR "Failed to register clock %s (%d)\n", + clkp->name, ret); + } + } +} + /* initalise all the clocks */ int __init s3c24xx_register_baseclocks(unsigned long xtal) diff --git a/arch/arm/plat-samsung/include/plat/clock.h b/arch/arm/plat-samsung/include/plat/clock.h index 43324af24c6e..bd41f828d15d 100644 --- a/arch/arm/plat-samsung/include/plat/clock.h +++ b/arch/arm/plat-samsung/include/plat/clock.h @@ -87,6 +87,8 @@ extern int s3c2410_clkcon_enable(struct clk *clk, int enable); extern int s3c24xx_register_clock(struct clk *clk); extern int s3c24xx_register_clocks(struct clk **clk, int nr_clks); +extern void s3c_register_clocks(struct clk *clk, int nr_clks); + extern int s3c24xx_register_baseclocks(unsigned long xtal); extern void s3c64xx_register_clocks(void); -- cgit v1.2.3 From ed276849bc6a8ad5bb0f9fa94fe8305ee67bb6c6 Mon Sep 17 00:00:00 2001 From: Kukjin Kim Date: Thu, 14 Jan 2010 12:50:23 +0900 Subject: ARM: SAMSUNG: Make clk_default_setrate and clk_ops_def_setrate visible This patch makes clk_default_setrate and clk_ops_def_setrate available to code outside plat-samsung clock code. Signed-off-by: Thomas Abraham Signed-off-by: Kukjin Kim Signed-off-by: Ben Dooks --- arch/arm/plat-s5pc1xx/clock.c | 14 ++------------ arch/arm/plat-samsung/clock.c | 4 ++-- arch/arm/plat-samsung/include/plat/clock.h | 3 +++ 3 files changed, 7 insertions(+), 14 deletions(-) (limited to 'arch/arm/plat-samsung/include/plat/clock.h') diff --git a/arch/arm/plat-s5pc1xx/clock.c b/arch/arm/plat-s5pc1xx/clock.c index 0aff16d1cc2c..aec0305174aa 100644 --- a/arch/arm/plat-s5pc1xx/clock.c +++ b/arch/arm/plat-s5pc1xx/clock.c @@ -64,16 +64,6 @@ struct clk clk_54m = { .rate = 54000000, }; -static int clk_default_setrate(struct clk *clk, unsigned long rate) -{ - clk->rate = rate; - return 0; -} - -static struct clk_ops clk_ops_default_setrate = { - .set_rate = clk_default_setrate, -}; - static int clk_dummy_enable(struct clk *clk, int enable) { return 0; @@ -86,7 +76,7 @@ struct clk clk_hd0 = { .parent = NULL, .ctrlbit = 0, .enable = clk_dummy_enable, - .ops = &clk_ops_default_setrate, + .ops = &clk_ops_def_setrate, }; struct clk clk_pd0 = { @@ -95,7 +85,7 @@ struct clk clk_pd0 = { .rate = 0, .parent = NULL, .ctrlbit = 0, - .ops = &clk_ops_default_setrate, + .ops = &clk_ops_def_setrate, .enable = clk_dummy_enable, }; diff --git a/arch/arm/plat-samsung/clock.c b/arch/arm/plat-samsung/clock.c index 9194af91e4b7..0c746ae7b2a6 100644 --- a/arch/arm/plat-samsung/clock.c +++ b/arch/arm/plat-samsung/clock.c @@ -225,13 +225,13 @@ EXPORT_SYMBOL(clk_set_parent); /* base clocks */ -static int clk_default_setrate(struct clk *clk, unsigned long rate) +int clk_default_setrate(struct clk *clk, unsigned long rate) { clk->rate = rate; return 0; } -static struct clk_ops clk_ops_def_setrate = { +struct clk_ops clk_ops_def_setrate = { .set_rate = clk_default_setrate, }; diff --git a/arch/arm/plat-samsung/include/plat/clock.h b/arch/arm/plat-samsung/include/plat/clock.h index bd41f828d15d..22e011497502 100644 --- a/arch/arm/plat-samsung/include/plat/clock.h +++ b/arch/arm/plat-samsung/include/plat/clock.h @@ -75,6 +75,9 @@ extern struct clk clk_h2; extern struct clk clk_27m; extern struct clk clk_48m; +extern int clk_default_setrate(struct clk *clk, unsigned long rate); +extern struct clk_ops clk_ops_def_setrate; + /* exports for arch/arm/mach-s3c2410 * * Please DO NOT use these outside of arch/arm/mach-s3c2410 -- cgit v1.2.3 From 1a0e8a52ad56075663d8e120e2468fc96fb6fa6c Mon Sep 17 00:00:00 2001 From: Kukjin Kim Date: Thu, 14 Jan 2010 08:13:37 +0900 Subject: ARM: S5P6440: Add Clock and PLL support This patch adds clock and pll support for S5P6440. This patch are based on Harald Welte's patches and Ben's plat-samsung. Signed-off-by: Thomas Abraham Signed-off-by: Kukjin Kim Signed-off-by: Ben Dooks --- arch/arm/mach-s5p6440/include/mach/regs-clock.h | 130 +++++ arch/arm/plat-s5p/clock.c | 136 +++++ arch/arm/plat-s5p/include/plat/pll.h | 83 +++ arch/arm/plat-s5p/include/plat/s5p-clock.h | 38 ++ arch/arm/plat-s5p/s5p6440-clock.c | 698 ++++++++++++++++++++++++ arch/arm/plat-samsung/include/plat/clock.h | 1 + 6 files changed, 1086 insertions(+) create mode 100644 arch/arm/mach-s5p6440/include/mach/regs-clock.h create mode 100644 arch/arm/plat-s5p/clock.c create mode 100644 arch/arm/plat-s5p/include/plat/pll.h create mode 100644 arch/arm/plat-s5p/include/plat/s5p-clock.h create mode 100644 arch/arm/plat-s5p/s5p6440-clock.c (limited to 'arch/arm/plat-samsung/include/plat/clock.h') diff --git a/arch/arm/mach-s5p6440/include/mach/regs-clock.h b/arch/arm/mach-s5p6440/include/mach/regs-clock.h new file mode 100644 index 000000000000..b7af28342bc4 --- /dev/null +++ b/arch/arm/mach-s5p6440/include/mach/regs-clock.h @@ -0,0 +1,130 @@ +/* linux/arch/arm/mach-s5p6440/include/mach/regs-clock.h + * + * Copyright (c) 2009 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5P6440 - Clock register definitions + * + * 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. +*/ + +#ifndef __ASM_ARCH_REGS_CLOCK_H +#define __ASM_ARCH_REGS_CLOCK_H __FILE__ + +#include + +#define S5P_CLKREG(x) (S5P_VA_CLK + (x)) + +#define S5P_APLL_LOCK S5P_CLKREG(0x00) +#define S5P_MPLL_LOCK S5P_CLKREG(0x04) +#define S5P_EPLL_LOCK S5P_CLKREG(0x08) +#define S5P_APLL_CON S5P_CLKREG(0x0C) +#define S5P_MPLL_CON S5P_CLKREG(0x10) +#define S5P_EPLL_CON S5P_CLKREG(0x14) +#define S5P_EPLL_CON_K S5P_CLKREG(0x18) +#define S5P_CLK_SRC0 S5P_CLKREG(0x1C) +#define S5P_CLK_DIV0 S5P_CLKREG(0x20) +#define S5P_CLK_DIV1 S5P_CLKREG(0x24) +#define S5P_CLK_DIV2 S5P_CLKREG(0x28) +#define S5P_CLK_OUT S5P_CLKREG(0x2C) +#define S5P_CLK_GATE_HCLK0 S5P_CLKREG(0x30) +#define S5P_CLK_GATE_PCLK S5P_CLKREG(0x34) +#define S5P_CLK_GATE_SCLK0 S5P_CLKREG(0x38) +#define S5P_CLK_GATE_MEM0 S5P_CLKREG(0x3C) +#define S5P_CLK_DIV3 S5P_CLKREG(0x40) +#define S5P_CLK_GATE_HCLK1 S5P_CLKREG(0x44) +#define S5P_CLK_GATE_SCLK1 S5P_CLKREG(0x48) +#define S5P_AHB_CON0 S5P_CLKREG(0x100) +#define S5P_CLK_SRC1 S5P_CLKREG(0x10C) +#define S5P_SWRESET S5P_CLKREG(0x114) +#define S5P_SYS_ID S5P_CLKREG(0x118) +#define S5P_SYS_OTHERS S5P_CLKREG(0x11C) +#define S5P_MEM_CFG_STAT S5P_CLKREG(0x12C) +#define S5P_PWR_CFG S5P_CLKREG(0x804) +#define S5P_EINT_WAKEUP_MASK S5P_CLKREG(0x808) +#define S5P_NORMAL_CFG S5P_CLKREG(0x810) +#define S5P_STOP_CFG S5P_CLKREG(0x814) +#define S5P_SLEEP_CFG S5P_CLKREG(0x818) +#define S5P_OSC_FREQ S5P_CLKREG(0x820) +#define S5P_OSC_STABLE S5P_CLKREG(0x824) +#define S5P_PWR_STABLE S5P_CLKREG(0x828) +#define S5P_MTC_STABLE S5P_CLKREG(0x830) +#define S5P_OTHERS S5P_CLKREG(0x900) +#define S5P_RST_STAT S5P_CLKREG(0x904) +#define S5P_WAKEUP_STAT S5P_CLKREG(0x908) +#define S5P_SLPEN S5P_CLKREG(0x930) +#define S5P_INFORM0 S5P_CLKREG(0xA00) +#define S5P_INFORM1 S5P_CLKREG(0xA04) +#define S5P_INFORM2 S5P_CLKREG(0xA08) +#define S5P_INFORM3 S5P_CLKREG(0xA0C) + +/* CLKDIV0 */ +#define S5P_CLKDIV0_PCLK_MASK (0xf << 12) +#define S5P_CLKDIV0_PCLK_SHIFT (12) +#define S5P_CLKDIV0_HCLK_MASK (0xf << 8) +#define S5P_CLKDIV0_HCLK_SHIFT (8) +#define S5P_CLKDIV0_MPLL_MASK (0x1 << 4) +#define S5P_CLKDIV0_ARM_MASK (0xf << 0) +#define S5P_CLKDIV0_ARM_SHIFT (0) + +/* CLKDIV3 */ +#define S5P_CLKDIV3_PCLK_LOW_MASK (0xf << 12) +#define S5P_CLKDIV3_PCLK_LOW_SHIFT (12) +#define S5P_CLKDIV3_HCLK_LOW_MASK (0xf << 8) +#define S5P_CLKDIV3_HCLK_LOW_SHIFT (8) + +/* HCLK0 GATE Registers */ +#define S5P_CLKCON_HCLK0_USB (1<<20) +#define S5P_CLKCON_HCLK0_HSMMC2 (1<<19) +#define S5P_CLKCON_HCLK0_HSMMC1 (1<<18) +#define S5P_CLKCON_HCLK0_HSMMC0 (1<<17) +#define S5P_CLKCON_HCLK0_POST0 (1<<5) + +/* HCLK1 GATE Registers */ +#define S5P_CLKCON_HCLK1_DISPCON (1<<1) + +/* PCLK GATE Registers */ +#define S5P_CLKCON_PCLK_IIS2 (1<<26) +#define S5P_CLKCON_PCLK_SPI1 (1<<22) +#define S5P_CLKCON_PCLK_SPI0 (1<<21) +#define S5P_CLKCON_PCLK_GPIO (1<<18) +#define S5P_CLKCON_PCLK_IIC0 (1<<17) +#define S5P_CLKCON_PCLK_TSADC (1<<12) +#define S5P_CLKCON_PCLK_PWM (1<<7) +#define S5P_CLKCON_PCLK_RTC (1<<6) +#define S5P_CLKCON_PCLK_WDT (1<<5) +#define S5P_CLKCON_PCLK_UART3 (1<<4) +#define S5P_CLKCON_PCLK_UART2 (1<<3) +#define S5P_CLKCON_PCLK_UART1 (1<<2) +#define S5P_CLKCON_PCLK_UART0 (1<<1) + +/* SCLK0 GATE Registers */ +#define S5P_CLKCON_SCLK0_MMC2_48 (1<<29) +#define S5P_CLKCON_SCLK0_MMC1_48 (1<<28) +#define S5P_CLKCON_SCLK0_MMC0_48 (1<<27) +#define S5P_CLKCON_SCLK0_MMC2 (1<<26) +#define S5P_CLKCON_SCLK0_MMC1 (1<<25) +#define S5P_CLKCON_SCLK0_MMC0 (1<<24) +#define S5P_CLKCON_SCLK0_SPI1_48 (1<<23) +#define S5P_CLKCON_SCLK0_SPI0_48 (1<<22) +#define S5P_CLKCON_SCLK0_SPI1 (1<<21) +#define S5P_CLKCON_SCLK0_SPI0 (1<<20) +#define S5P_CLKCON_SCLK0_UART (1<<5) + +/* SCLK1 GATE Registers */ + +/* MEM0 GATE Registers */ +#define S5P_CLKCON_MEM0_HCLK_NFCON (1<<2) + +/*OTHERS Resgister */ +#define S5P_OTHERS_USB_SIG_MASK (1<<16) +#define S5P_OTHERS_HCLK_LOW_SEL_MPLL (1<<6) + +/* Compatibility defines */ +#define ARM_CLK_DIV S5P_CLK_DIV0 +#define ARM_DIV_RATIO_SHIFT 0 +#define ARM_DIV_MASK (0xf << ARM_DIV_RATIO_SHIFT) + +#endif /* __ASM_ARCH_REGS_CLOCK_H */ diff --git a/arch/arm/plat-s5p/clock.c b/arch/arm/plat-s5p/clock.c new file mode 100644 index 000000000000..3d3c0f1934fc --- /dev/null +++ b/arch/arm/plat-s5p/clock.c @@ -0,0 +1,136 @@ +/* linux/arch/arm/plat-s5p/clock.c + * + * Copyright 2009 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5P - Common clock support + * + * 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 +#include +#include +#include + +#include +#include +#include + +/* fin_apll, fin_mpll and fin_epll are all the same clock, which we call + * clk_ext_xtal_mux. +*/ +struct clk clk_ext_xtal_mux = { + .name = "ext_xtal", + .id = -1, +}; + +/* 48MHz USB Phy clock output */ +struct clk clk_48m = { + .name = "clk_48m", + .id = -1, + .rate = 48000000, +}; + +/* APLL clock output + * No need .ctrlbit, this is always on +*/ +struct clk clk_fout_apll = { + .name = "fout_apll", + .id = -1, +}; + +/* MPLL clock output + * No need .ctrlbit, this is always on +*/ +struct clk clk_fout_mpll = { + .name = "fout_mpll", + .id = -1, +}; + +/* EPLL clock output */ +struct clk clk_fout_epll = { + .name = "fout_epll", + .id = -1, + .ctrlbit = (1 << 31), +}; + +/* ARM clock */ +struct clk clk_arm = { + .name = "armclk", + .id = -1, + .rate = 0, + .ctrlbit = 0, +}; + +/* Possible clock sources for APLL Mux */ +static struct clk *clk_src_apll_list[] = { + [0] = &clk_fin_apll, + [1] = &clk_fout_apll, +}; + +struct clksrc_sources clk_src_apll = { + .sources = clk_src_apll_list, + .nr_sources = ARRAY_SIZE(clk_src_apll_list), +}; + +/* Possible clock sources for MPLL Mux */ +static struct clk *clk_src_mpll_list[] = { + [0] = &clk_fin_mpll, + [1] = &clk_fout_mpll, +}; + +struct clksrc_sources clk_src_mpll = { + .sources = clk_src_mpll_list, + .nr_sources = ARRAY_SIZE(clk_src_mpll_list), +}; + +/* Possible clock sources for EPLL Mux */ +static struct clk *clk_src_epll_list[] = { + [0] = &clk_fin_epll, + [1] = &clk_fout_epll, +}; + +struct clksrc_sources clk_src_epll = { + .sources = clk_src_epll_list, + .nr_sources = ARRAY_SIZE(clk_src_epll_list), +}; + +int s5p_gatectrl(void __iomem *reg, struct clk *clk, int enable) +{ + unsigned int ctrlbit = clk->ctrlbit; + u32 con; + + con = __raw_readl(reg); + con = enable ? (con | ctrlbit) : (con & ~ctrlbit); + __raw_writel(con, reg); + return 0; +} + +static struct clk *s5p_clks[] __initdata = { + &clk_ext_xtal_mux, + &clk_48m, + &clk_fout_apll, + &clk_fout_mpll, + &clk_fout_epll, + &clk_arm, +}; + +void __init s5p_register_clocks(unsigned long xtal_freq) +{ + int ret; + + clk_ext_xtal_mux.rate = xtal_freq; + + ret = s3c24xx_register_clocks(s5p_clks, ARRAY_SIZE(s5p_clks)); + if (ret > 0) + printk(KERN_ERR "Failed to register s5p clocks\n"); +} diff --git a/arch/arm/plat-s5p/include/plat/pll.h b/arch/arm/plat-s5p/include/plat/pll.h new file mode 100644 index 000000000000..d48325bb29e2 --- /dev/null +++ b/arch/arm/plat-s5p/include/plat/pll.h @@ -0,0 +1,83 @@ +/* arch/arm/plat-s5p/include/plat/pll.h + * + * Copyright (c) 2009 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5P PLL code + * + * Based on arch/arm/plat-s3c64xx/include/plat/pll.h + * + * 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. +*/ + +#define PLL45XX_MDIV_MASK (0x3FF) +#define PLL45XX_PDIV_MASK (0x3F) +#define PLL45XX_SDIV_MASK (0x7) +#define PLL45XX_MDIV_SHIFT (16) +#define PLL45XX_PDIV_SHIFT (8) +#define PLL45XX_SDIV_SHIFT (0) + +#include + +enum pll45xx_type_t { + pll_4500, + pll_4502, + pll_4508 +}; + +static inline unsigned long s5p_get_pll45xx(unsigned long baseclk, u32 pll_con, + enum pll45xx_type_t pll_type) +{ + u32 mdiv, pdiv, sdiv; + u64 fvco = baseclk; + + mdiv = (pll_con >> PLL45XX_MDIV_SHIFT) & PLL45XX_MDIV_MASK; + pdiv = (pll_con >> PLL45XX_PDIV_SHIFT) & PLL45XX_PDIV_MASK; + sdiv = (pll_con >> PLL45XX_SDIV_SHIFT) & PLL45XX_SDIV_MASK; + + if (pll_type == pll_4508) + sdiv = sdiv - 1; + + fvco *= mdiv; + do_div(fvco, (pdiv << sdiv)); + + return (unsigned long)fvco; +} + +#define PLL90XX_MDIV_MASK (0xFF) +#define PLL90XX_PDIV_MASK (0x3F) +#define PLL90XX_SDIV_MASK (0x7) +#define PLL90XX_KDIV_MASK (0xffff) +#define PLL90XX_MDIV_SHIFT (16) +#define PLL90XX_PDIV_SHIFT (8) +#define PLL90XX_SDIV_SHIFT (0) +#define PLL90XX_KDIV_SHIFT (0) + +static inline unsigned long s5p_get_pll90xx(unsigned long baseclk, + u32 pll_con, u32 pll_conk) +{ + unsigned long result; + u32 mdiv, pdiv, sdiv, kdiv; + u64 tmp; + + mdiv = (pll_con >> PLL90XX_MDIV_SHIFT) & PLL90XX_MDIV_MASK; + pdiv = (pll_con >> PLL90XX_PDIV_SHIFT) & PLL90XX_PDIV_MASK; + sdiv = (pll_con >> PLL90XX_SDIV_SHIFT) & PLL90XX_SDIV_MASK; + kdiv = pll_conk & PLL90XX_KDIV_MASK; + + /* We need to multiple baseclk by mdiv (the integer part) and kdiv + * which is in 2^16ths, so shift mdiv up (does not overflow) and + * add kdiv before multiplying. The use of tmp is to avoid any + * overflows before shifting bac down into result when multipling + * by the mdiv and kdiv pair. + */ + + tmp = baseclk; + tmp *= (mdiv << 16) + kdiv; + do_div(tmp, (pdiv << sdiv)); + result = tmp >> 16; + + return result; +} diff --git a/arch/arm/plat-s5p/include/plat/s5p-clock.h b/arch/arm/plat-s5p/include/plat/s5p-clock.h new file mode 100644 index 000000000000..e1a7444b8829 --- /dev/null +++ b/arch/arm/plat-s5p/include/plat/s5p-clock.h @@ -0,0 +1,38 @@ +/* linux/arch/arm/plat-s5p/include/plat/s5p-clock.h + * + * Copyright 2009 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * Header file for s5p clock support + * + * 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. +*/ + +#ifndef __ASM_PLAT_S5P_CLOCK_H +#define __ASM_PLAT_S5P_CLOCK_H __FILE__ + +#include + +#define GET_DIV(clk, field) ((((clk) & field##_MASK) >> field##_SHIFT) + 1) + +#define clk_fin_apll clk_ext_xtal_mux +#define clk_fin_mpll clk_ext_xtal_mux +#define clk_fin_epll clk_ext_xtal_mux + +extern struct clk clk_ext_xtal_mux; +extern struct clk clk_48m; +extern struct clk clk_fout_apll; +extern struct clk clk_fout_mpll; +extern struct clk clk_fout_epll; +extern struct clk clk_arm; + +extern struct clksrc_sources clk_src_apll; +extern struct clksrc_sources clk_src_mpll; +extern struct clksrc_sources clk_src_epll; + +extern int s5p6440_clk48m_ctrl(struct clk *clk, int enable); +extern int s5p_gatectrl(void __iomem *reg, struct clk *clk, int enable); + +#endif /* __ASM_PLAT_S5P_CLOCK_H */ diff --git a/arch/arm/plat-s5p/s5p6440-clock.c b/arch/arm/plat-s5p/s5p6440-clock.c new file mode 100644 index 000000000000..2f412f8c1212 --- /dev/null +++ b/arch/arm/plat-s5p/s5p6440-clock.c @@ -0,0 +1,698 @@ +/* linux/arch/arm/plat-s5p/s5p6440-clock.c + * + * Copyright (c) 2009 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5P6440 - Clock support + * + * 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 +#include +#include + +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include + +/* APLL Mux output clock */ +static struct clksrc_clk clk_mout_apll = { + .clk = { + .name = "mout_apll", + .id = -1, + }, + .sources = &clk_src_apll, + .reg_src = { .reg = S5P_CLK_SRC0, .shift = 0, .size = 1 }, +}; + +static int s5p6440_epll_enable(struct clk *clk, int enable) +{ + unsigned int ctrlbit = clk->ctrlbit; + unsigned int epll_con = __raw_readl(S5P_EPLL_CON) & ~ctrlbit; + + if (enable) + __raw_writel(epll_con | ctrlbit, S5P_EPLL_CON); + else + __raw_writel(epll_con, S5P_EPLL_CON); + + return 0; +} + +static unsigned long s5p6440_epll_get_rate(struct clk *clk) +{ + return clk->rate; +} + +static u32 epll_div[][5] = { + { 36000000, 0, 48, 1, 4 }, + { 48000000, 0, 32, 1, 3 }, + { 60000000, 0, 40, 1, 3 }, + { 72000000, 0, 48, 1, 3 }, + { 84000000, 0, 28, 1, 2 }, + { 96000000, 0, 32, 1, 2 }, + { 32768000, 45264, 43, 1, 4 }, + { 45158000, 6903, 30, 1, 3 }, + { 49152000, 50332, 32, 1, 3 }, + { 67738000, 10398, 45, 1, 3 }, + { 73728000, 9961, 49, 1, 3 } +}; + +static int s5p6440_epll_set_rate(struct clk *clk, unsigned long rate) +{ + unsigned int epll_con, epll_con_k; + unsigned int i; + + if (clk->rate == rate) /* Return if nothing changed */ + return 0; + + epll_con = __raw_readl(S5P_EPLL_CON); + epll_con_k = __raw_readl(S5P_EPLL_CON_K); + + epll_con_k &= ~(PLL90XX_KDIV_MASK); + epll_con &= ~(PLL90XX_MDIV_MASK | PLL90XX_PDIV_MASK | PLL90XX_SDIV_MASK); + + for (i = 0; i < ARRAY_SIZE(epll_div); i++) { + if (epll_div[i][0] == rate) { + epll_con_k |= (epll_div[i][1] << PLL90XX_KDIV_SHIFT); + epll_con |= (epll_div[i][2] << PLL90XX_MDIV_SHIFT) | + (epll_div[i][3] << PLL90XX_PDIV_SHIFT) | + (epll_div[i][4] << PLL90XX_SDIV_SHIFT); + break; + } + } + + if (i == ARRAY_SIZE(epll_div)) { + printk(KERN_ERR "%s: Invalid Clock EPLL Frequency\n", __func__); + return -EINVAL; + } + + __raw_writel(epll_con, S5P_EPLL_CON); + __raw_writel(epll_con_k, S5P_EPLL_CON_K); + + clk->rate = rate; + + return 0; +} + +static struct clk_ops s5p6440_epll_ops = { + .get_rate = s5p6440_epll_get_rate, + .set_rate = s5p6440_epll_set_rate, +}; + +static struct clksrc_clk clk_mout_epll = { + .clk = { + .name = "mout_epll", + .id = -1, + }, + .sources = &clk_src_epll, + .reg_src = { .reg = S5P_CLK_SRC0, .shift = 2, .size = 1 }, +}; + +static struct clksrc_clk clk_mout_mpll = { + .clk = { + .name = "mout_mpll", + .id = -1, + }, + .sources = &clk_src_mpll, + .reg_src = { .reg = S5P_CLK_SRC0, .shift = 1, .size = 1 }, +}; + +static struct clk clk_h_low = { + .name = "hclk_low", + .id = -1, + .rate = 0, + .parent = NULL, + .ctrlbit = 0, + .ops = &clk_ops_def_setrate, +}; + +static struct clk clk_p_low = { + .name = "pclk_low", + .id = -1, + .rate = 0, + .parent = NULL, + .ctrlbit = 0, + .ops = &clk_ops_def_setrate, +}; + +enum perf_level { + L0 = 532*1000, + L1 = 266*1000, + L2 = 133*1000, +}; + +static const u32 clock_table[][3] = { + /*{ARM_CLK, DIVarm, DIVhclk}*/ + {L0 * 1000, (0 << ARM_DIV_RATIO_SHIFT), (3 << S5P_CLKDIV0_HCLK_SHIFT)}, + {L1 * 1000, (1 << ARM_DIV_RATIO_SHIFT), (1 << S5P_CLKDIV0_HCLK_SHIFT)}, + {L2 * 1000, (3 << ARM_DIV_RATIO_SHIFT), (0 << S5P_CLKDIV0_HCLK_SHIFT)}, +}; + +static unsigned long s5p6440_armclk_get_rate(struct clk *clk) +{ + unsigned long rate = clk_get_rate(clk->parent); + u32 clkdiv; + + /* divisor mask starts at bit0, so no need to shift */ + clkdiv = __raw_readl(ARM_CLK_DIV) & ARM_DIV_MASK; + + return rate / (clkdiv + 1); +} + +static unsigned long s5p6440_armclk_round_rate(struct clk *clk, + unsigned long rate) +{ + u32 iter; + + for (iter = 1 ; iter < ARRAY_SIZE(clock_table) ; iter++) { + if (rate > clock_table[iter][0]) + return clock_table[iter-1][0]; + } + + return clock_table[ARRAY_SIZE(clock_table) - 1][0]; +} + +static int s5p6440_armclk_set_rate(struct clk *clk, unsigned long rate) +{ + u32 round_tmp; + u32 iter; + u32 clk_div0_tmp; + u32 cur_rate = clk->ops->get_rate(clk); + unsigned long flags; + + round_tmp = clk->ops->round_rate(clk, rate); + if (round_tmp == cur_rate) + return 0; + + + for (iter = 0 ; iter < ARRAY_SIZE(clock_table) ; iter++) { + if (round_tmp == clock_table[iter][0]) + break; + } + + if (iter >= ARRAY_SIZE(clock_table)) + iter = ARRAY_SIZE(clock_table) - 1; + + local_irq_save(flags); + if (cur_rate > round_tmp) { + /* Frequency Down */ + clk_div0_tmp = __raw_readl(ARM_CLK_DIV) & ~(ARM_DIV_MASK); + clk_div0_tmp |= clock_table[iter][1]; + __raw_writel(clk_div0_tmp, ARM_CLK_DIV); + + clk_div0_tmp = __raw_readl(ARM_CLK_DIV) & + ~(S5P_CLKDIV0_HCLK_MASK); + clk_div0_tmp |= clock_table[iter][2]; + __raw_writel(clk_div0_tmp, ARM_CLK_DIV); + + + } else { + /* Frequency Up */ + clk_div0_tmp = __raw_readl(ARM_CLK_DIV) & + ~(S5P_CLKDIV0_HCLK_MASK); + clk_div0_tmp |= clock_table[iter][2]; + __raw_writel(clk_div0_tmp, ARM_CLK_DIV); + + clk_div0_tmp = __raw_readl(ARM_CLK_DIV) & ~(ARM_DIV_MASK); + clk_div0_tmp |= clock_table[iter][1]; + __raw_writel(clk_div0_tmp, ARM_CLK_DIV); + } + local_irq_restore(flags); + + clk->rate = clock_table[iter][0]; + + return 0; +} + +static struct clk_ops s5p6440_clkarm_ops = { + .get_rate = s5p6440_armclk_get_rate, + .set_rate = s5p6440_armclk_set_rate, + .round_rate = s5p6440_armclk_round_rate, +}; + +static unsigned long s5p6440_clk_doutmpll_get_rate(struct clk *clk) +{ + unsigned long rate = clk_get_rate(clk->parent); + + if (__raw_readl(S5P_CLK_DIV0) & S5P_CLKDIV0_MPLL_MASK) + rate /= 2; + + return rate; +} + +static struct clk clk_dout_mpll = { + .name = "dout_mpll", + .id = -1, + .parent = &clk_mout_mpll.clk, + .ops = &(struct clk_ops) { + .get_rate = s5p6440_clk_doutmpll_get_rate, + }, +}; + +int s5p6440_clk48m_ctrl(struct clk *clk, int enable) +{ + unsigned long flags; + u32 val; + + /* can't rely on clock lock, this register has other usages */ + local_irq_save(flags); + + val = __raw_readl(S5P_OTHERS); + if (enable) + val |= S5P_OTHERS_USB_SIG_MASK; + else + val &= ~S5P_OTHERS_USB_SIG_MASK; + + __raw_writel(val, S5P_OTHERS); + + local_irq_restore(flags); + + return 0; +} + +static int s5p6440_pclk_ctrl(struct clk *clk, int enable) +{ + return s5p_gatectrl(S5P_CLK_GATE_PCLK, clk, enable); +} + +static int s5p6440_hclk0_ctrl(struct clk *clk, int enable) +{ + return s5p_gatectrl(S5P_CLK_GATE_HCLK0, clk, enable); +} + +static int s5p6440_hclk1_ctrl(struct clk *clk, int enable) +{ + return s5p_gatectrl(S5P_CLK_GATE_HCLK1, clk, enable); +} + +static int s5p6440_sclk_ctrl(struct clk *clk, int enable) +{ + return s5p_gatectrl(S5P_CLK_GATE_SCLK0, clk, enable); +} + +static int s5p6440_mem_ctrl(struct clk *clk, int enable) +{ + return s5p_gatectrl(S5P_CLK_GATE_MEM0, clk, enable); +} + +/* + * The following clocks will be disabled during clock initialization. It is + * recommended to keep the following clocks disabled until the driver requests + * for enabling the clock. + */ +static struct clk init_clocks_disable[] = { + { + .name = "nand", + .id = -1, + .parent = &clk_h, + .enable = s5p6440_mem_ctrl, + .ctrlbit = S5P_CLKCON_MEM0_HCLK_NFCON, + }, { + .name = "adc", + .id = -1, + .parent = &clk_p_low, + .enable = s5p6440_pclk_ctrl, + .ctrlbit = S5P_CLKCON_PCLK_TSADC, + }, { + .name = "i2c", + .id = -1, + .parent = &clk_p_low, + .enable = s5p6440_pclk_ctrl, + .ctrlbit = S5P_CLKCON_PCLK_IIC0, + }, { + .name = "i2s_v40", + .id = 0, + .parent = &clk_p_low, + .enable = s5p6440_pclk_ctrl, + .ctrlbit = S5P_CLKCON_PCLK_IIS2, + }, { + .name = "spi", + .id = 0, + .parent = &clk_p_low, + .enable = s5p6440_pclk_ctrl, + .ctrlbit = S5P_CLKCON_PCLK_SPI0, + }, { + .name = "spi", + .id = 1, + .parent = &clk_p_low, + .enable = s5p6440_pclk_ctrl, + .ctrlbit = S5P_CLKCON_PCLK_SPI1, + }, { + .name = "sclk_spi_48", + .id = 0, + .parent = &clk_48m, + .enable = s5p6440_sclk_ctrl, + .ctrlbit = S5P_CLKCON_SCLK0_SPI0_48, + }, { + .name = "sclk_spi_48", + .id = 1, + .parent = &clk_48m, + .enable = s5p6440_sclk_ctrl, + .ctrlbit = S5P_CLKCON_SCLK0_SPI1_48, + }, { + .name = "mmc_48m", + .id = 0, + .parent = &clk_48m, + .enable = s5p6440_sclk_ctrl, + .ctrlbit = S5P_CLKCON_SCLK0_MMC0_48, + }, { + .name = "mmc_48m", + .id = 1, + .parent = &clk_48m, + .enable = s5p6440_sclk_ctrl, + .ctrlbit = S5P_CLKCON_SCLK0_MMC1_48, + }, { + .name = "mmc_48m", + .id = 2, + .parent = &clk_48m, + .enable = s5p6440_sclk_ctrl, + .ctrlbit = S5P_CLKCON_SCLK0_MMC2_48, + }, { + .name = "otg", + .id = -1, + .parent = &clk_h_low, + .enable = s5p6440_hclk0_ctrl, + .ctrlbit = S5P_CLKCON_HCLK0_USB + }, { + .name = "post", + .id = -1, + .parent = &clk_h_low, + .enable = s5p6440_hclk0_ctrl, + .ctrlbit = S5P_CLKCON_HCLK0_POST0 + }, { + .name = "lcd", + .id = -1, + .parent = &clk_h_low, + .enable = s5p6440_hclk1_ctrl, + .ctrlbit = S5P_CLKCON_HCLK1_DISPCON, + }, { + .name = "hsmmc", + .id = 0, + .parent = &clk_h_low, + .enable = s5p6440_hclk0_ctrl, + .ctrlbit = S5P_CLKCON_HCLK0_HSMMC0, + }, { + .name = "hsmmc", + .id = 1, + .parent = &clk_h_low, + .enable = s5p6440_hclk0_ctrl, + .ctrlbit = S5P_CLKCON_HCLK0_HSMMC1, + }, { + .name = "hsmmc", + .id = 2, + .parent = &clk_h_low, + .enable = s5p6440_hclk0_ctrl, + .ctrlbit = S5P_CLKCON_HCLK0_HSMMC2, + }, { + .name = "rtc", + .id = -1, + .parent = &clk_p_low, + .enable = s5p6440_pclk_ctrl, + .ctrlbit = S5P_CLKCON_PCLK_RTC, + }, { + .name = "watchdog", + .id = -1, + .parent = &clk_p_low, + .enable = s5p6440_pclk_ctrl, + .ctrlbit = S5P_CLKCON_PCLK_WDT, + }, { + .name = "timers", + .id = -1, + .parent = &clk_p_low, + .enable = s5p6440_pclk_ctrl, + .ctrlbit = S5P_CLKCON_PCLK_PWM, + } +}; + +/* + * The following clocks will be enabled during clock initialization. + */ +static struct clk init_clocks[] = { + { + .name = "gpio", + .id = -1, + .parent = &clk_p_low, + .enable = s5p6440_pclk_ctrl, + .ctrlbit = S5P_CLKCON_PCLK_GPIO, + }, { + .name = "uart", + .id = 0, + .parent = &clk_p_low, + .enable = s5p6440_pclk_ctrl, + .ctrlbit = S5P_CLKCON_PCLK_UART0, + }, { + .name = "uart", + .id = 1, + .parent = &clk_p_low, + .enable = s5p6440_pclk_ctrl, + .ctrlbit = S5P_CLKCON_PCLK_UART1, + }, { + .name = "uart", + .id = 2, + .parent = &clk_p_low, + .enable = s5p6440_pclk_ctrl, + .ctrlbit = S5P_CLKCON_PCLK_UART2, + }, { + .name = "uart", + .id = 3, + .parent = &clk_p_low, + .enable = s5p6440_pclk_ctrl, + .ctrlbit = S5P_CLKCON_PCLK_UART3, + } +}; + +static struct clk clk_iis_cd_v40 = { + .name = "iis_cdclk_v40", + .id = -1, +}; + +static struct clk clk_pcm_cd = { + .name = "pcm_cdclk", + .id = -1, +}; + +static struct clk *clkset_spi_mmc_list[] = { + &clk_mout_epll.clk, + &clk_dout_mpll, + &clk_fin_epll, +}; + +static struct clksrc_sources clkset_spi_mmc = { + .sources = clkset_spi_mmc_list, + .nr_sources = ARRAY_SIZE(clkset_spi_mmc_list), +}; + +static struct clk *clkset_uart_list[] = { + &clk_mout_epll.clk, + &clk_dout_mpll +}; + +static struct clksrc_sources clkset_uart = { + .sources = clkset_uart_list, + .nr_sources = ARRAY_SIZE(clkset_uart_list), +}; + +static struct clksrc_clk clksrcs[] = { + { + .clk = { + .name = "mmc_bus", + .id = 0, + .ctrlbit = S5P_CLKCON_SCLK0_MMC0, + .enable = s5p6440_sclk_ctrl, + }, + .sources = &clkset_spi_mmc, + .reg_src = { .reg = S5P_CLK_SRC0, .shift = 18, .size = 2 }, + .reg_div = { .reg = S5P_CLK_DIV1, .shift = 0, .size = 4 }, + }, { + .clk = { + .name = "mmc_bus", + .id = 1, + .ctrlbit = S5P_CLKCON_SCLK0_MMC1, + .enable = s5p6440_sclk_ctrl, + }, + .sources = &clkset_spi_mmc, + .reg_src = { .reg = S5P_CLK_SRC0, .shift = 20, .size = 2 }, + .reg_div = { .reg = S5P_CLK_DIV1, .shift = 4, .size = 4 }, + }, { + .clk = { + .name = "mmc_bus", + .id = 2, + .ctrlbit = S5P_CLKCON_SCLK0_MMC2, + .enable = s5p6440_sclk_ctrl, + }, + .sources = &clkset_spi_mmc, + .reg_src = { .reg = S5P_CLK_SRC0, .shift = 22, .size = 2 }, + .reg_div = { .reg = S5P_CLK_DIV1, .shift = 8, .size = 4 }, + }, { + .clk = { + .name = "uclk1", + .id = -1, + .ctrlbit = S5P_CLKCON_SCLK0_UART, + .enable = s5p6440_sclk_ctrl, + }, + .sources = &clkset_uart, + .reg_src = { .reg = S5P_CLK_SRC0, .shift = 13, .size = 1 }, + .reg_div = { .reg = S5P_CLK_DIV2, .shift = 16, .size = 4 }, + }, { + .clk = { + .name = "spi_epll", + .id = 0, + .ctrlbit = S5P_CLKCON_SCLK0_SPI0, + .enable = s5p6440_sclk_ctrl, + }, + .sources = &clkset_spi_mmc, + .reg_src = { .reg = S5P_CLK_SRC0, .shift = 14, .size = 2 }, + .reg_div = { .reg = S5P_CLK_DIV2, .shift = 0, .size = 4 }, + }, { + .clk = { + .name = "spi_epll", + .id = 1, + .ctrlbit = S5P_CLKCON_SCLK0_SPI1, + .enable = s5p6440_sclk_ctrl, + }, + .sources = &clkset_spi_mmc, + .reg_src = { .reg = S5P_CLK_SRC0, .shift = 16, .size = 2 }, + .reg_div = { .reg = S5P_CLK_DIV2, .shift = 4, .size = 4 }, + } +}; + +/* Clock initialisation code */ +static struct clksrc_clk *init_parents[] = { + &clk_mout_apll, + &clk_mout_epll, + &clk_mout_mpll, +}; + +void __init_or_cpufreq s5p6440_setup_clocks(void) +{ + struct clk *xtal_clk; + unsigned long xtal; + unsigned long fclk; + unsigned long hclk; + unsigned long hclk_low; + unsigned long pclk; + unsigned long pclk_low; + unsigned long epll; + unsigned long apll; + unsigned long mpll; + unsigned int ptr; + u32 clkdiv0; + u32 clkdiv3; + + /* Set S5P6440 functions for clk_fout_epll */ + clk_fout_epll.enable = s5p6440_epll_enable; + clk_fout_epll.ops = &s5p6440_epll_ops; + + /* Set S5P6440 functions for arm clock */ + clk_arm.parent = &clk_mout_apll.clk; + clk_arm.ops = &s5p6440_clkarm_ops; + clk_48m.enable = s5p6440_clk48m_ctrl; + + clkdiv0 = __raw_readl(S5P_CLK_DIV0); + clkdiv3 = __raw_readl(S5P_CLK_DIV3); + + xtal_clk = clk_get(NULL, "ext_xtal"); + BUG_ON(IS_ERR(xtal_clk)); + + xtal = clk_get_rate(xtal_clk); + clk_put(xtal_clk); + + epll = s5p_get_pll90xx(xtal, __raw_readl(S5P_EPLL_CON), + __raw_readl(S5P_EPLL_CON_K)); + mpll = s5p_get_pll45xx(xtal, __raw_readl(S5P_MPLL_CON), pll_4502); + apll = s5p_get_pll45xx(xtal, __raw_readl(S5P_APLL_CON), pll_4502); + + printk(KERN_INFO "S5P6440: PLL settings, A=%ld.%ldMHz, M=%ld.%ldMHz," \ + " E=%ld.%ldMHz\n", + print_mhz(apll), print_mhz(mpll), print_mhz(epll)); + + fclk = apll / GET_DIV(clkdiv0, S5P_CLKDIV0_ARM); + hclk = fclk / GET_DIV(clkdiv0, S5P_CLKDIV0_HCLK); + pclk = hclk / GET_DIV(clkdiv0, S5P_CLKDIV0_PCLK); + + if (__raw_readl(S5P_OTHERS) & S5P_OTHERS_HCLK_LOW_SEL_MPLL) { + /* Asynchronous mode */ + hclk_low = mpll / GET_DIV(clkdiv3, S5P_CLKDIV3_HCLK_LOW); + } else { + /* Synchronous mode */ + hclk_low = apll / GET_DIV(clkdiv3, S5P_CLKDIV3_HCLK_LOW); + } + + pclk_low = hclk_low / GET_DIV(clkdiv3, S5P_CLKDIV3_PCLK_LOW); + + printk(KERN_INFO "S5P6440: HCLK=%ld.%ldMHz, HCLK_LOW=%ld.%ldMHz," \ + " PCLK=%ld.%ldMHz, PCLK_LOW=%ld.%ldMHz\n", + print_mhz(hclk), print_mhz(hclk_low), + print_mhz(pclk), print_mhz(pclk_low)); + + clk_fout_mpll.rate = mpll; + clk_fout_epll.rate = epll; + clk_fout_apll.rate = apll; + + clk_f.rate = fclk; + clk_h.rate = hclk; + clk_p.rate = pclk; + clk_h_low.rate = hclk_low; + clk_p_low.rate = pclk_low; + + for (ptr = 0; ptr < ARRAY_SIZE(init_parents); ptr++) + s3c_set_clksrc(init_parents[ptr], true); + + for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++) + s3c_set_clksrc(&clksrcs[ptr], true); +} + +static struct clk *clks[] __initdata = { + &clk_ext, + &clk_mout_epll.clk, + &clk_mout_mpll.clk, + &clk_dout_mpll, + &clk_iis_cd_v40, + &clk_pcm_cd, + &clk_p_low, + &clk_h_low, +}; + +void __init s5p6440_register_clocks(void) +{ + struct clk *clkp; + int ret; + int ptr; + + ret = s3c24xx_register_clocks(clks, ARRAY_SIZE(clks)); + if (ret > 0) + printk(KERN_ERR "Failed to register %u clocks\n", ret); + + s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs)); + s3c_register_clocks(init_clocks, ARRAY_SIZE(init_clocks)); + + clkp = init_clocks_disable; + for (ptr = 0; ptr < ARRAY_SIZE(init_clocks_disable); ptr++, clkp++) { + + ret = s3c24xx_register_clock(clkp); + if (ret < 0) { + printk(KERN_ERR "Failed to register clock %s (%d)\n", + clkp->name, ret); + } + (clkp->enable)(clkp, 0); + } + + s3c_pwmclk_init(); +} diff --git a/arch/arm/plat-samsung/include/plat/clock.h b/arch/arm/plat-samsung/include/plat/clock.h index 22e011497502..ba9a1cdd3a28 100644 --- a/arch/arm/plat-samsung/include/plat/clock.h +++ b/arch/arm/plat-samsung/include/plat/clock.h @@ -95,6 +95,7 @@ extern void s3c_register_clocks(struct clk *clk, int nr_clks); extern int s3c24xx_register_baseclocks(unsigned long xtal); extern void s3c64xx_register_clocks(void); +extern void s5p_register_clocks(unsigned long xtal_freq); extern void s3c24xx_setup_clocks(unsigned long fclk, unsigned long hclk, -- cgit v1.2.3 From 55bf9267dd628c9369674ca75f5b00e275529289 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Tue, 26 Jan 2010 15:10:38 +0900 Subject: ARM: S3C64XX: Combine the clock init code Turn the init sequence of s3c24xx_register_baseclocks(xtal); s3c64xx_register_clocks(); s3c6400_register_clocks(S3C6410_CLKDIV0_ARM_MASK); into a single call as this is now contained within one file. Signed-off-by: Ben Dooks --- arch/arm/mach-s3c64xx/clock.c | 50 +++++++++++----------------- arch/arm/mach-s3c64xx/include/mach/s3c6400.h | 3 +- arch/arm/mach-s3c64xx/s3c6400.c | 5 +-- arch/arm/mach-s3c64xx/s3c6410.c | 4 +-- arch/arm/plat-samsung/include/plat/clock.h | 1 - 5 files changed, 23 insertions(+), 40 deletions(-) (limited to 'arch/arm/plat-samsung/include/plat/clock.h') diff --git a/arch/arm/mach-s3c64xx/clock.c b/arch/arm/mach-s3c64xx/clock.c index 9b587e267422..7f5e1aa99ce1 100644 --- a/arch/arm/mach-s3c64xx/clock.c +++ b/arch/arm/mach-s3c64xx/clock.c @@ -748,19 +748,29 @@ static struct clk *clks1[] __initdata = { &clk_arm, }; +static struct clk *clks[] __initdata = { + &clk_ext, + &clk_epll, + &clk_27m, + &clk_48m, + &clk_h2, +}; + /** - * s3c6400_register_clocks - register clocks for s3c6400 and above - * @armclk_divlimit: Divisor mask for ARMCLK + * s3c64xx_register_clocks - register clocks for s3c6400 and s3c6410 + * @xtal: The rate for the clock crystal feeding the PLLs. + * @armclk_divlimit: Divisor mask for ARMCLK. * - * Register the clocks for the S3C6400 and above SoC range, such - * as ARMCLK and the clocks which have divider chains attached. + * Register the clocks for the S3C6400 and S3C6410 SoC range, such + * as ARMCLK as well as the necessary parent clocks. * * This call does not setup the clocks, which is left to the * s3c6400_setup_clocks() call which may be needed by the cpufreq * or resume code to re-set the clocks if the bootloader has changed * them. */ -void __init s3c6400_register_clocks(unsigned armclk_divlimit) +void __init s3c64xx_register_clocks(unsigned long xtal, + unsigned armclk_divlimit) { struct clk *clkp; int ret; @@ -768,33 +778,9 @@ void __init s3c6400_register_clocks(unsigned armclk_divlimit) armclk_mask = armclk_divlimit; - for (ptr = 0; ptr < ARRAY_SIZE(clks1); ptr++) { - clkp = clks1[ptr]; - ret = s3c24xx_register_clock(clkp); - if (ret < 0) { - printk(KERN_ERR "Failed to register clock %s (%d)\n", - clkp->name, ret); - } - } - - s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs)); -} - -static struct clk *clks[] __initdata = { - &clk_ext, - &clk_epll, - &clk_27m, - &clk_48m, - &clk_h2, -}; - -void __init s3c64xx_register_clocks(void) -{ - struct clk *clkp; - int ret; - int ptr; - + s3c24xx_register_baseclocks(xtal); s3c24xx_register_clocks(clks, ARRAY_SIZE(clks)); + s3c_register_clocks(init_clocks, ARRAY_SIZE(init_clocks)); clkp = init_clocks_disable; @@ -809,5 +795,7 @@ void __init s3c64xx_register_clocks(void) (clkp->enable)(clkp, 0); } + s3c24xx_register_clocks(clks1, ARRAY_SIZE(clks1)); + s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs)); s3c_pwmclk_init(); } diff --git a/arch/arm/mach-s3c64xx/include/mach/s3c6400.h b/arch/arm/mach-s3c64xx/include/mach/s3c6400.h index 2bc7c07a928f..f86958d05352 100644 --- a/arch/arm/mach-s3c64xx/include/mach/s3c6400.h +++ b/arch/arm/mach-s3c64xx/include/mach/s3c6400.h @@ -15,9 +15,10 @@ /* Common init code for S3C6400 related SoCs */ extern void s3c6400_common_init_uarts(struct s3c2410_uartcfg *cfg, int no); -extern void s3c6400_register_clocks(unsigned armclk_divlimit); extern void s3c6400_setup_clocks(void); +extern void s3c64xx_register_clocks(unsigned long xtal, unsigned armclk_limit); + #ifdef CONFIG_CPU_S3C6400 extern int s3c6400_init(void); diff --git a/arch/arm/mach-s3c64xx/s3c6400.c b/arch/arm/mach-s3c64xx/s3c6400.c index 720d0d1f3bfc..707e34e3afd1 100644 --- a/arch/arm/mach-s3c64xx/s3c6400.c +++ b/arch/arm/mach-s3c64xx/s3c6400.c @@ -55,10 +55,7 @@ void __init s3c6400_map_io(void) void __init s3c6400_init_clocks(int xtal) { - printk(KERN_DEBUG "%s: initialising clocks\n", __func__); - s3c24xx_register_baseclocks(xtal); - s3c64xx_register_clocks(); - s3c6400_register_clocks(S3C6400_CLKDIV0_ARM_MASK); + s3c64xx_register_clocks(xtal, S3C6400_CLKDIV0_ARM_MASK); s3c6400_setup_clocks(); } diff --git a/arch/arm/mach-s3c64xx/s3c6410.c b/arch/arm/mach-s3c64xx/s3c6410.c index fd457cc3ab87..59635d19466a 100644 --- a/arch/arm/mach-s3c64xx/s3c6410.c +++ b/arch/arm/mach-s3c64xx/s3c6410.c @@ -58,9 +58,7 @@ void __init s3c6410_map_io(void) void __init s3c6410_init_clocks(int xtal) { printk(KERN_DEBUG "%s: initialising clocks\n", __func__); - s3c24xx_register_baseclocks(xtal); - s3c64xx_register_clocks(); - s3c6400_register_clocks(S3C6410_CLKDIV0_ARM_MASK); + s3c64xx_register_clocks(xtal, S3C6410_CLKDIV0_ARM_MASK); s3c6400_setup_clocks(); } diff --git a/arch/arm/plat-samsung/include/plat/clock.h b/arch/arm/plat-samsung/include/plat/clock.h index ba9a1cdd3a28..60b62692ac7a 100644 --- a/arch/arm/plat-samsung/include/plat/clock.h +++ b/arch/arm/plat-samsung/include/plat/clock.h @@ -94,7 +94,6 @@ extern void s3c_register_clocks(struct clk *clk, int nr_clks); extern int s3c24xx_register_baseclocks(unsigned long xtal); -extern void s3c64xx_register_clocks(void); extern void s5p_register_clocks(unsigned long xtal_freq); extern void s3c24xx_setup_clocks(unsigned long fclk, -- cgit v1.2.3