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ARM: OMAP2: Clean up 24xx clock code 

Clean up 24xx clock code to sync it with linux-omap tree.

Signed-off-by: Tony Lindgren <tony@atomide.com>
hifive-unleashed-5.1
Tony Lindgren 2008-03-18 11:56:39 +02:00
parent 2150ef46f8
commit a16e97037b
4 changed files with 49 additions and 62 deletions
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15
arch/arm/mach-omap2/clock.c
View File

@ -1,20 +1,13 @@
/*
* linux/arch/arm/mach-omap2/clock.c
*
* Copyright (C) 2005 Texas Instruments Inc.
* Copyright (C) 2005-2008 Texas Instruments, Inc.
* Copyright (C) 2004-2008 Nokia Corporation
*
* Contacts:
* Richard Woodruff <r-woodruff2@ti.com>
* Created for OMAP2.
*
* Cleaned up and modified to use omap shared clock framework by
* Tony Lindgren <tony@atomide.com>
*
* Copyright (C) 2007 Texas Instruments, Inc.
* Copyright (C) 2007 Nokia Corporation
* Paul Walmsley
*
* Based on omap1 clock.c, Copyright (C) 2004 - 2005 Nokia corporation
* Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>
*
* 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.

13
arch/arm/mach-omap2/clock.h
View File

@ -1,16 +1,11 @@
/*
* linux/arch/arm/mach-omap2/clock.h
*
* Copyright (C) 2005 Texas Instruments Inc.
* Copyright (C) 2005-2008 Texas Instruments, Inc.
* Copyright (C) 2004-2008 Nokia Corporation
*
* Contacts:
* Richard Woodruff <r-woodruff2@ti.com>
* Created for OMAP2.
*
* Copyright (C) 2004 Nokia corporation
* Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>
* Based on clocks.h by Tony Lindgren, Gordon McNutt and RidgeRun, Inc
*
* Copyright (C) 2007 Texas Instruments, Inc.
* Copyright (C) 2007 Nokia Corporation
* Paul Walmsley
*
* This program is free software; you can redistribute it and/or modify

46
arch/arm/mach-omap2/clock24xx.c
View File

@ -1,15 +1,15 @@
/*
* linux/arch/arm/mach-omap2/clock.c
*
* Copyright (C) 2005 Texas Instruments Inc.
* Copyright (C) 2005-2008 Texas Instruments, Inc.
* Copyright (C) 2004-2008 Nokia Corporation
*
* Contacts:
* Richard Woodruff <r-woodruff2@ti.com>
* Created for OMAP2.
* Paul Walmsley
*
* Cleaned up and modified to use omap shared clock framework by
* Tony Lindgren <tony@atomide.com>
*
* Based on omap1 clock.c, Copyright (C) 2004 - 2005 Nokia corporation
* Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>
* Based on earlier work by Tuukka Tikkanen, Tony Lindgren,
* Gordon McNutt and RidgeRun, Inc.
*
* 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
@ -60,6 +60,21 @@ static struct clk *sclk;
* Omap24xx specific clock functions
*-------------------------------------------------------------------------*/
/* This actually returns the rate of core_ck, not dpll_ck. */
static u32 omap2_get_dpll_rate_24xx(struct clk *tclk)
{
long long dpll_clk;
u8 amult;
dpll_clk = omap2_get_dpll_rate(tclk);
amult = cm_read_mod_reg(PLL_MOD, CM_CLKSEL2);
amult &= OMAP24XX_CORE_CLK_SRC_MASK;
dpll_clk *= amult;
return dpll_clk;
}
static int omap2_enable_osc_ck(struct clk *clk)
{
u32 pcc;
@ -94,21 +109,6 @@ static void omap2_sys_clk_recalc(struct clk * clk)
}
#endif /* OLD_CK */
/* This actually returns the rate of core_ck, not dpll_ck. */
static u32 omap2_get_dpll_rate_24xx(struct clk *tclk)
{
long long dpll_clk;
u8 amult;
dpll_clk = omap2_get_dpll_rate(tclk);
amult = cm_read_mod_reg(PLL_MOD, CM_CLKSEL2);
amult &= OMAP24XX_CORE_CLK_SRC_MASK;
dpll_clk *= amult;
return dpll_clk;
}
/* Enable an APLL if off */
static int omap2_clk_fixed_enable(struct clk *clk)
{
@ -333,7 +333,7 @@ static int omap2_select_table_rate(struct clk *clk, unsigned long rate)
if (!found_speed) {
printk(KERN_INFO "Could not set MPU rate to %luMHz\n",
rate / 1000000);
rate / 1000000);
return -EINVAL;
}

37
arch/arm/mach-omap2/clock24xx.h
View File

@ -1,13 +1,12 @@
/*
* linux/arch/arm/mach-omap24xx/clock.h
* linux/arch/arm/mach-omap2/clock24xx.h
*
* Copyright (C) 2005 Texas Instruments Inc.
* Copyright (C) 2005-2008 Texas Instruments, Inc.
* Copyright (C) 2004-2008 Nokia Corporation
*
* Contacts:
* Richard Woodruff <r-woodruff2@ti.com>
* Created for OMAP2.
*
* Copyright (C) 2004 Nokia corporation
* Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>
* Based on clocks.h by Tony Lindgren, Gordon McNutt and RidgeRun, Inc
* Paul Walmsley
*
* 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
@ -25,18 +24,18 @@
#include "cm-regbits-24xx.h"
#include "sdrc.h"
static void omap2_table_mpu_recalc(struct clk * clk);
static int omap2_select_table_rate(struct clk * clk, unsigned long rate);
static long omap2_round_to_table_rate(struct clk * clk, unsigned long rate);
static void omap2_sys_clk_recalc(struct clk * clk);
static void omap2_osc_clk_recalc(struct clk * clk);
static void omap2_sys_clk_recalc(struct clk * clk);
static void omap2_dpll_recalc(struct clk * clk);
static int omap2_clk_fixed_enable(struct clk * clk);
static void omap2_clk_fixed_disable(struct clk * clk);
static int omap2_enable_osc_ck(struct clk * clk);
static void omap2_disable_osc_ck(struct clk * clk);
static int omap2_reprogram_dpll(struct clk * clk, unsigned long rate);
static void omap2_table_mpu_recalc(struct clk *clk);
static int omap2_select_table_rate(struct clk *clk, unsigned long rate);
static long omap2_round_to_table_rate(struct clk *clk, unsigned long rate);
static void omap2_sys_clk_recalc(struct clk *clk);
static void omap2_osc_clk_recalc(struct clk *clk);
static void omap2_sys_clk_recalc(struct clk *clk);
static void omap2_dpll_recalc(struct clk *clk);
static int omap2_clk_fixed_enable(struct clk *clk);
static void omap2_clk_fixed_disable(struct clk *clk);
static int omap2_enable_osc_ck(struct clk *clk);
static void omap2_disable_osc_ck(struct clk *clk);
static int omap2_reprogram_dpll(struct clk *clk, unsigned long rate);
/* Key dividers which make up a PRCM set. Ratio's for a PRCM are mandated.
* xtal_speed, dpll_speed, mpu_speed, CM_CLKSEL_MPU,CM_CLKSEL_DSP