diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-12 16:00:54 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-12 16:00:54 -0800 |
commit | dca1d9f6d7ae428c193f32bd3e9a4ca13176648b (patch) | |
tree | 02de8c3503c1c811754423d2fa3f3b4978044f6e /arch/arm/plat-samsung/include/plat/clock.h | |
parent | 9ff99339447de403a46be5e3f23d0c794d540b06 (diff) | |
parent | 91e013827c0bcbb187ecf02213c5446b6f62d445 (diff) |
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (370 commits)
ARM: S3C2443: Add set_rate and round_rate calls for armdiv clock
ARM: S3C2443: Remove #if 0 for clk_mpll
ARM: S3C2443: Update notes on MPLLREF clock
ARM: S3C2443: Further clksrc-clk conversions
ARM: S3C2443: Change to using plat-samsung clksrc-clk implementation
USB: Fix s3c-hsotg build following Samsung platform header moves
ARM: S3C64XX: Reintroduce unconditional build of audio device
ARM: 5961/1: ux500: fix CLKRST addresses
ARM: 5977/1: arm: Enable backtrace printing on oops when PC is corrupted
ASoC: Fix S3C64xx IIS driver for Samsung header reorg
ARM: S3C2440: Fix plat-s3c24xx move of s3c2440/s3c2442 support
[ARM] pxa: fix typo in mxm8x10.h
[ARM] pxa/raumfeld: set GPIO drive bits for LED pins
[ARM] pxa/zeus: Add support for mcp2515 CAN bus
[ARM] pxa/zeus: Add support for onboard max6369 watchdog
[ARM] pxa/zeus: Add Eurotech as the manufacturer
[ARM] pxa/zeus: Correct the USB host initialisation flags
[ARM] pxa/zeus: Allow usage of 8250-compatible UART in uncompress
[ARM] pxa: refactor uncompress.h for non-PXA uarts
[ARM] mmp2: fix incorrect calling of chip->mask_ack() for 2nd level cascaded IRQs
...
Diffstat (limited to 'arch/arm/plat-samsung/include/plat/clock.h')
-rw-r--r-- | arch/arm/plat-samsung/include/plat/clock.h | 115 |
1 files changed, 115 insertions, 0 deletions
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..60b62692ac7a --- /dev/null +++ b/arch/arm/plat-samsung/include/plat/clock.h @@ -0,0 +1,115 @@ +/* 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, <ben@simtec.co.uk> + * + * 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 <linux/spinlock.h> + +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; + struct clk *parent; + const char *name; + int id; + int usage; + unsigned long rate; + unsigned long ctrlbit; + + struct clk_ops *ops; + int (*enable)(struct clk *, int enable); +}; + +/* 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; + +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 +*/ + +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 void s3c_register_clocks(struct clk *clk, int nr_clks); + +extern int s3c24xx_register_baseclocks(unsigned long xtal); + +extern void s5p_register_clocks(unsigned long xtal_freq); + +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); + |