diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/mach-omap2/clkt2xxx_apll.c')
-rw-r--r-- | ANDROID_3.4.5/arch/arm/mach-omap2/clkt2xxx_apll.c | 146 |
1 files changed, 0 insertions, 146 deletions
diff --git a/ANDROID_3.4.5/arch/arm/mach-omap2/clkt2xxx_apll.c b/ANDROID_3.4.5/arch/arm/mach-omap2/clkt2xxx_apll.c deleted file mode 100644 index b19a1f72..00000000 --- a/ANDROID_3.4.5/arch/arm/mach-omap2/clkt2xxx_apll.c +++ /dev/null @@ -1,146 +0,0 @@ -/* - * OMAP2xxx APLL clock control functions - * - * Copyright (C) 2005-2008 Texas Instruments, Inc. - * Copyright (C) 2004-2010 Nokia Corporation - * - * Contacts: - * Richard Woodruff <r-woodruff2@ti.com> - * Paul Walmsley - * - * 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 - * published by the Free Software Foundation. - */ -#undef DEBUG - -#include <linux/kernel.h> -#include <linux/clk.h> -#include <linux/io.h> - -#include <plat/clock.h> -#include <plat/prcm.h> - -#include "clock.h" -#include "clock2xxx.h" -#include "cm2xxx_3xxx.h" -#include "cm-regbits-24xx.h" - -/* CM_CLKEN_PLL.EN_{54,96}M_PLL options (24XX) */ -#define EN_APLL_STOPPED 0 -#define EN_APLL_LOCKED 3 - -/* CM_CLKSEL1_PLL.APLLS_CLKIN options (24XX) */ -#define APLLS_CLKIN_19_2MHZ 0 -#define APLLS_CLKIN_13MHZ 2 -#define APLLS_CLKIN_12MHZ 3 - -void __iomem *cm_idlest_pll; - -/* Private functions */ - -/* Enable an APLL if off */ -static int omap2_clk_apll_enable(struct clk *clk, u32 status_mask) -{ - u32 cval, apll_mask; - - apll_mask = EN_APLL_LOCKED << clk->enable_bit; - - cval = omap2_cm_read_mod_reg(PLL_MOD, CM_CLKEN); - - if ((cval & apll_mask) == apll_mask) - return 0; /* apll already enabled */ - - cval &= ~apll_mask; - cval |= apll_mask; - omap2_cm_write_mod_reg(cval, PLL_MOD, CM_CLKEN); - - omap2_cm_wait_idlest(cm_idlest_pll, status_mask, - OMAP24XX_CM_IDLEST_VAL, clk->name); - - /* - * REVISIT: Should we return an error code if omap2_wait_clock_ready() - * fails? - */ - return 0; -} - -static int omap2_clk_apll96_enable(struct clk *clk) -{ - return omap2_clk_apll_enable(clk, OMAP24XX_ST_96M_APLL_MASK); -} - -static int omap2_clk_apll54_enable(struct clk *clk) -{ - return omap2_clk_apll_enable(clk, OMAP24XX_ST_54M_APLL_MASK); -} - -static void _apll96_allow_idle(struct clk *clk) -{ - omap2xxx_cm_set_apll96_auto_low_power_stop(); -} - -static void _apll96_deny_idle(struct clk *clk) -{ - omap2xxx_cm_set_apll96_disable_autoidle(); -} - -static void _apll54_allow_idle(struct clk *clk) -{ - omap2xxx_cm_set_apll54_auto_low_power_stop(); -} - -static void _apll54_deny_idle(struct clk *clk) -{ - omap2xxx_cm_set_apll54_disable_autoidle(); -} - -/* Stop APLL */ -static void omap2_clk_apll_disable(struct clk *clk) -{ - u32 cval; - - cval = omap2_cm_read_mod_reg(PLL_MOD, CM_CLKEN); - cval &= ~(EN_APLL_LOCKED << clk->enable_bit); - omap2_cm_write_mod_reg(cval, PLL_MOD, CM_CLKEN); -} - -/* Public data */ - -const struct clkops clkops_apll96 = { - .enable = omap2_clk_apll96_enable, - .disable = omap2_clk_apll_disable, - .allow_idle = _apll96_allow_idle, - .deny_idle = _apll96_deny_idle, -}; - -const struct clkops clkops_apll54 = { - .enable = omap2_clk_apll54_enable, - .disable = omap2_clk_apll_disable, - .allow_idle = _apll54_allow_idle, - .deny_idle = _apll54_deny_idle, -}; - -/* Public functions */ - -u32 omap2xxx_get_apll_clkin(void) -{ - u32 aplls, srate = 0; - - aplls = omap2_cm_read_mod_reg(PLL_MOD, CM_CLKSEL1); - aplls &= OMAP24XX_APLLS_CLKIN_MASK; - aplls >>= OMAP24XX_APLLS_CLKIN_SHIFT; - - if (aplls == APLLS_CLKIN_19_2MHZ) - srate = 19200000; - else if (aplls == APLLS_CLKIN_13MHZ) - srate = 13000000; - else if (aplls == APLLS_CLKIN_12MHZ) - srate = 12000000; - - return srate; -} - |