diff options
Diffstat (limited to 'arch/arm/mach-omap2/clkt2xxx_apll.c')
-rw-r--r-- | arch/arm/mach-omap2/clkt2xxx_apll.c | 142 |
1 files changed, 0 insertions, 142 deletions
diff --git a/arch/arm/mach-omap2/clkt2xxx_apll.c b/arch/arm/mach-omap2/clkt2xxx_apll.c deleted file mode 100644 index c78e893eba7d..000000000000 --- a/arch/arm/mach-omap2/clkt2xxx_apll.c +++ /dev/null @@ -1,142 +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 "clock.h" -#include "clock2xxx.h" -#include "cm2xxx.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 - -/* Private functions */ - -/** - * omap2xxx_clk_apll_locked - is the APLL locked? - * @hw: struct clk_hw * of the APLL to check - * - * If the APLL IP block referred to by @hw indicates that it's locked, - * return true; otherwise, return false. - */ -static bool omap2xxx_clk_apll_locked(struct clk_hw *hw) -{ - struct clk_hw_omap *clk = to_clk_hw_omap(hw); - u32 r, apll_mask; - - apll_mask = EN_APLL_LOCKED << clk->enable_bit; - - r = omap2xxx_cm_get_pll_status(); - - return ((r & apll_mask) == apll_mask) ? true : false; -} - -int omap2_clk_apll96_enable(struct clk_hw *hw) -{ - return omap2xxx_cm_apll96_enable(); -} - -int omap2_clk_apll54_enable(struct clk_hw *hw) -{ - return omap2xxx_cm_apll54_enable(); -} - -static void _apll96_allow_idle(struct clk_hw_omap *clk) -{ - omap2xxx_cm_set_apll96_auto_low_power_stop(); -} - -static void _apll96_deny_idle(struct clk_hw_omap *clk) -{ - omap2xxx_cm_set_apll96_disable_autoidle(); -} - -static void _apll54_allow_idle(struct clk_hw_omap *clk) -{ - omap2xxx_cm_set_apll54_auto_low_power_stop(); -} - -static void _apll54_deny_idle(struct clk_hw_omap *clk) -{ - omap2xxx_cm_set_apll54_disable_autoidle(); -} - -void omap2_clk_apll96_disable(struct clk_hw *hw) -{ - omap2xxx_cm_apll96_disable(); -} - -void omap2_clk_apll54_disable(struct clk_hw *hw) -{ - omap2xxx_cm_apll54_disable(); -} - -unsigned long omap2_clk_apll54_recalc(struct clk_hw *hw, - unsigned long parent_rate) -{ - return (omap2xxx_clk_apll_locked(hw)) ? 54000000 : 0; -} - -unsigned long omap2_clk_apll96_recalc(struct clk_hw *hw, - unsigned long parent_rate) -{ - return (omap2xxx_clk_apll_locked(hw)) ? 96000000 : 0; -} - -/* Public data */ -const struct clk_hw_omap_ops clkhwops_apll54 = { - .allow_idle = _apll54_allow_idle, - .deny_idle = _apll54_deny_idle, -}; - -const struct clk_hw_omap_ops clkhwops_apll96 = { - .allow_idle = _apll96_allow_idle, - .deny_idle = _apll96_deny_idle, -}; - -/* Public functions */ - -u32 omap2xxx_get_apll_clkin(void) -{ - u32 aplls, srate = 0; - - aplls = omap2xxx_cm_get_pll_config(); - 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; -} - |