diff options
Diffstat (limited to 'arch/arm/plat-omap/clock.c')
-rw-r--r-- | arch/arm/plat-omap/clock.c | 1316 |
1 files changed, 141 insertions, 1175 deletions
diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c index 52a58b2da28..7ce39b986e2 100644 --- a/arch/arm/plat-omap/clock.c +++ b/arch/arm/plat-omap/clock.c @@ -1,578 +1,42 @@ /* * linux/arch/arm/plat-omap/clock.c * - * Copyright (C) 2004 Nokia corporation + * Copyright (C) 2004 - 2005 Nokia corporation * Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com> * + * Modified for omap shared clock framework by Tony Lindgren <tony@atomide.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. */ -#include <linux/module.h> +#include <linux/version.h> +#include <linux/config.h> #include <linux/kernel.h> +#include <linux/init.h> +#include <linux/module.h> #include <linux/list.h> #include <linux/errno.h> #include <linux/err.h> +#include <linux/string.h> #include <asm/io.h> #include <asm/semaphore.h> #include <asm/hardware/clock.h> -#include <asm/arch/board.h> -#include <asm/arch/usb.h> -#include "clock.h" -#include "sram.h" +#include <asm/arch/clock.h> -static LIST_HEAD(clocks); +LIST_HEAD(clocks); static DECLARE_MUTEX(clocks_sem); -static DEFINE_SPINLOCK(clockfw_lock); -static void propagate_rate(struct clk * clk); -/* UART clock function */ -static int set_uart_rate(struct clk * clk, unsigned long rate); -/* External clock (MCLK & BCLK) functions */ -static int set_ext_clk_rate(struct clk * clk, unsigned long rate); -static long round_ext_clk_rate(struct clk * clk, unsigned long rate); -static void init_ext_clk(struct clk * clk); -/* MPU virtual clock functions */ -static int select_table_rate(struct clk * clk, unsigned long rate); -static long round_to_table_rate(struct clk * clk, unsigned long rate); -void clk_setdpll(__u16, __u16); - -static struct mpu_rate rate_table[] = { - /* MPU MHz, xtal MHz, dpll1 MHz, CKCTL, DPLL_CTL - * armdiv, dspdiv, dspmmu, tcdiv, perdiv, lcddiv - */ -#if defined(CONFIG_OMAP_ARM_216MHZ) - { 216000000, 12000000, 216000000, 0x050d, 0x2910 }, /* 1/1/2/2/2/8 */ -#endif -#if defined(CONFIG_OMAP_ARM_195MHZ) - { 195000000, 13000000, 195000000, 0x050e, 0x2790 }, /* 1/1/2/2/4/8 */ -#endif -#if defined(CONFIG_OMAP_ARM_192MHZ) - { 192000000, 19200000, 192000000, 0x050f, 0x2510 }, /* 1/1/2/2/8/8 */ - { 192000000, 12000000, 192000000, 0x050f, 0x2810 }, /* 1/1/2/2/8/8 */ - { 96000000, 12000000, 192000000, 0x055f, 0x2810 }, /* 2/2/2/2/8/8 */ - { 48000000, 12000000, 192000000, 0x0baf, 0x2810 }, /* 4/8/4/4/8/8 */ - { 24000000, 12000000, 192000000, 0x0fff, 0x2810 }, /* 8/8/8/8/8/8 */ -#endif -#if defined(CONFIG_OMAP_ARM_182MHZ) - { 182000000, 13000000, 182000000, 0x050e, 0x2710 }, /* 1/1/2/2/4/8 */ -#endif -#if defined(CONFIG_OMAP_ARM_168MHZ) - { 168000000, 12000000, 168000000, 0x010f, 0x2710 }, /* 1/1/1/2/8/8 */ -#endif -#if defined(CONFIG_OMAP_ARM_150MHZ) - { 150000000, 12000000, 150000000, 0x010a, 0x2cb0 }, /* 1/1/1/2/4/4 */ -#endif -#if defined(CONFIG_OMAP_ARM_120MHZ) - { 120000000, 12000000, 120000000, 0x010a, 0x2510 }, /* 1/1/1/2/4/4 */ -#endif -#if defined(CONFIG_OMAP_ARM_96MHZ) - { 96000000, 12000000, 96000000, 0x0005, 0x2410 }, /* 1/1/1/1/2/2 */ -#endif -#if defined(CONFIG_OMAP_ARM_60MHZ) - { 60000000, 12000000, 60000000, 0x0005, 0x2290 }, /* 1/1/1/1/2/2 */ -#endif -#if defined(CONFIG_OMAP_ARM_30MHZ) - { 30000000, 12000000, 60000000, 0x0555, 0x2290 }, /* 2/2/2/2/2/2 */ -#endif - { 0, 0, 0, 0, 0 }, -}; - - -static void ckctl_recalc(struct clk * clk); -int __clk_enable(struct clk *clk); -void __clk_disable(struct clk *clk); -void __clk_unuse(struct clk *clk); -int __clk_use(struct clk *clk); - - -static void followparent_recalc(struct clk * clk) -{ - clk->rate = clk->parent->rate; -} - - -static void watchdog_recalc(struct clk * clk) -{ - clk->rate = clk->parent->rate / 14; -} - -static void uart_recalc(struct clk * clk) -{ - unsigned int val = omap_readl(clk->enable_reg); - if (val & clk->enable_bit) - clk->rate = 48000000; - else - clk->rate = 12000000; -} - -static struct clk ck_ref = { - .name = "ck_ref", - .rate = 12000000, - .flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | - ALWAYS_ENABLED, -}; - -static struct clk ck_dpll1 = { - .name = "ck_dpll1", - .parent = &ck_ref, - .flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | - RATE_PROPAGATES | ALWAYS_ENABLED, -}; - -static struct clk ck_dpll1out = { - .name = "ck_dpll1out", - .parent = &ck_dpll1, - .flags = CLOCK_IN_OMAP16XX, - .enable_reg = ARM_IDLECT2, - .enable_bit = EN_CKOUT_ARM, - .recalc = &followparent_recalc, -}; - -static struct clk arm_ck = { - .name = "arm_ck", - .parent = &ck_dpll1, - .flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | - RATE_CKCTL | RATE_PROPAGATES | ALWAYS_ENABLED, - .rate_offset = CKCTL_ARMDIV_OFFSET, - .recalc = &ckctl_recalc, -}; - -static struct clk armper_ck = { - .name = "armper_ck", - .parent = &ck_dpll1, - .flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | - RATE_CKCTL, - .enable_reg = ARM_IDLECT2, - .enable_bit = EN_PERCK, - .rate_offset = CKCTL_PERDIV_OFFSET, - .recalc = &ckctl_recalc, -}; - -static struct clk arm_gpio_ck = { - .name = "arm_gpio_ck", - .parent = &ck_dpll1, - .flags = CLOCK_IN_OMAP1510, - .enable_reg = ARM_IDLECT2, - .enable_bit = EN_GPIOCK, - .recalc = &followparent_recalc, -}; - -static struct clk armxor_ck = { - .name = "armxor_ck", - .parent = &ck_ref, - .flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX, - .enable_reg = ARM_IDLECT2, - .enable_bit = EN_XORPCK, - .recalc = &followparent_recalc, -}; - -static struct clk armtim_ck = { - .name = "armtim_ck", - .parent = &ck_ref, - .flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX, - .enable_reg = ARM_IDLECT2, - .enable_bit = EN_TIMCK, - .recalc = &followparent_recalc, -}; - -static struct clk armwdt_ck = { - .name = "armwdt_ck", - .parent = &ck_ref, - .flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX, - .enable_reg = ARM_IDLECT2, - .enable_bit = EN_WDTCK, - .recalc = &watchdog_recalc, -}; - -static struct clk arminth_ck16xx = { - .name = "arminth_ck", - .parent = &arm_ck, - .flags = CLOCK_IN_OMAP16XX | ALWAYS_ENABLED, - .recalc = &followparent_recalc, - /* Note: On 16xx the frequency can be divided by 2 by programming - * ARM_CKCTL:ARM_INTHCK_SEL(14) to 1 - * - * 1510 version is in TC clocks. - */ -}; - -static struct clk dsp_ck = { - .name = "dsp_ck", - .parent = &ck_dpll1, - .flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | - RATE_CKCTL, - .enable_reg = ARM_CKCTL, - .enable_bit = EN_DSPCK, - .rate_offset = CKCTL_DSPDIV_OFFSET, - .recalc = &ckctl_recalc, -}; - -static struct clk dspmmu_ck = { - .name = "dspmmu_ck", - .parent = &ck_dpll1, - .flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | - RATE_CKCTL | ALWAYS_ENABLED, - .rate_offset = CKCTL_DSPMMUDIV_OFFSET, - .recalc = &ckctl_recalc, -}; - -static struct clk dspper_ck = { - .name = "dspper_ck", - .parent = &ck_dpll1, - .flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | - RATE_CKCTL | DSP_DOMAIN_CLOCK | VIRTUAL_IO_ADDRESS, - .enable_reg = DSP_IDLECT2, - .enable_bit = EN_PERCK, - .rate_offset = CKCTL_PERDIV_OFFSET, - .recalc = &followparent_recalc, - //.recalc = &ckctl_recalc, -}; - -static struct clk dspxor_ck = { - .name = "dspxor_ck", - .parent = &ck_ref, - .flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | - DSP_DOMAIN_CLOCK | VIRTUAL_IO_ADDRESS, - .enable_reg = DSP_IDLECT2, - .enable_bit = EN_XORPCK, - .recalc = &followparent_recalc, -}; - -static struct clk dsptim_ck = { - .name = "dsptim_ck", - .parent = &ck_ref, - .flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | - DSP_DOMAIN_CLOCK | VIRTUAL_IO_ADDRESS, - .enable_reg = DSP_IDLECT2, - .enable_bit = EN_DSPTIMCK, - .recalc = &followparent_recalc, -}; - -static struct clk tc_ck = { - .name = "tc_ck", - .parent = &ck_dpll1, - .flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | CLOCK_IN_OMAP730 | - RATE_CKCTL | RATE_PROPAGATES | ALWAYS_ENABLED, - .rate_offset = CKCTL_TCDIV_OFFSET, - .recalc = &ckctl_recalc, -}; - -static struct clk arminth_ck1510 = { - .name = "arminth_ck", - .parent = &tc_ck, - .flags = CLOCK_IN_OMAP1510 | ALWAYS_ENABLED, - .recalc = &followparent_recalc, - /* Note: On 1510 the frequency follows TC_CK - * - * 16xx version is in MPU clocks. - */ -}; - -static struct clk tipb_ck = { - .name = "tibp_ck", - .parent = &tc_ck, - .flags = CLOCK_IN_OMAP1510 | ALWAYS_ENABLED, - .recalc = &followparent_recalc, -}; - -static struct clk l3_ocpi_ck = { - .name = "l3_ocpi_ck", - .parent = &tc_ck, - .flags = CLOCK_IN_OMAP16XX, - .enable_reg = ARM_IDLECT3, - .enable_bit = EN_OCPI_CK, - .recalc = &followparent_recalc, -}; +DEFINE_SPINLOCK(clockfw_lock); -static struct clk tc1_ck = { - .name = "tc1_ck", - .parent = &tc_ck, - .flags = CLOCK_IN_OMAP16XX, - .enable_reg = ARM_IDLECT3, - .enable_bit = EN_TC1_CK, - .recalc = &followparent_recalc, -}; +static struct clk_functions *arch_clock; -static struct clk tc2_ck = { - .name = "tc2_ck", - .parent = &tc_ck, - .flags = CLOCK_IN_OMAP16XX, - .enable_reg = ARM_IDLECT3, - .enable_bit = EN_TC2_CK, - .recalc = &followparent_recalc, -}; +/*------------------------------------------------------------------------- + * Standard clock functions defined in asm/hardware/clock.h + *-------------------------------------------------------------------------*/ -static struct clk dma_ck = { - .name = "dma_ck", - .parent = &tc_ck, - .flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | - ALWAYS_ENABLED, - .recalc = &followparent_recalc, -}; - -static struct clk dma_lcdfree_ck = { - .name = "dma_lcdfree_ck", - .parent = &tc_ck, - .flags = CLOCK_IN_OMAP16XX | ALWAYS_ENABLED, - .recalc = &followparent_recalc, -}; - -static struct clk api_ck = { - .name = "api_ck", - .parent = &tc_ck, - .flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX, - .enable_reg = ARM_IDLECT2, - .enable_bit = EN_APICK, - .recalc = &followparent_recalc, -}; - -static struct clk lb_ck = { - .name = "lb_ck", - .parent = &tc_ck, - .flags = CLOCK_IN_OMAP1510, - .enable_reg = ARM_IDLECT2, - .enable_bit = EN_LBCK, - .recalc = &followparent_recalc, -}; - -static struct clk rhea1_ck = { - .name = "rhea1_ck", - .parent = &tc_ck, - .flags = CLOCK_IN_OMAP16XX | ALWAYS_ENABLED, - .recalc = &followparent_recalc, -}; - -static struct clk rhea2_ck = { - .name = "rhea2_ck", - .parent = &tc_ck, - .flags = CLOCK_IN_OMAP16XX | ALWAYS_ENABLED, - .recalc = &followparent_recalc, -}; - -static struct clk lcd_ck = { - .name = "lcd_ck", - .parent = &ck_dpll1, - .flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | CLOCK_IN_OMAP730 | - RATE_CKCTL, - .enable_reg = ARM_IDLECT2, - .enable_bit = EN_LCDCK, - .rate_offset = CKCTL_LCDDIV_OFFSET, - .recalc = &ckctl_recalc, -}; - -static struct clk uart1_1510 = { - .name = "uart1_ck", - /* Direct from ULPD, no parent */ - .rate = 12000000, - .flags = CLOCK_IN_OMAP1510 | ENABLE_REG_32BIT | ALWAYS_ENABLED, - .enable_reg = MOD_CONF_CTRL_0, - .enable_bit = 29, /* Chooses between 12MHz and 48MHz */ - .set_rate = &set_uart_rate, - .recalc = &uart_recalc, -}; - -static struct clk uart1_16xx = { - .name = "uart1_ck", - /* Direct from ULPD, no parent */ - .rate = 48000000, - .flags = CLOCK_IN_OMAP16XX | RATE_FIXED | ENABLE_REG_32BIT, - .enable_reg = MOD_CONF_CTRL_0, - .enable_bit = 29, -}; - -static struct clk uart2_ck = { - .name = "uart2_ck", - /* Direct from ULPD, no parent */ - .rate = 12000000, - .flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | ENABLE_REG_32BIT | - ALWAYS_ENABLED, - .enable_reg = MOD_CONF_CTRL_0, - .enable_bit = 30, /* Chooses between 12MHz and 48MHz */ - .set_rate = &set_uart_rate, - .recalc = &uart_recalc, -}; - -static struct clk uart3_1510 = { - .name = "uart3_ck", - /* Direct from ULPD, no parent */ - .rate = 12000000, - .flags = CLOCK_IN_OMAP1510 | ENABLE_REG_32BIT | ALWAYS_ENABLED, - .enable_reg = MOD_CONF_CTRL_0, - .enable_bit = 31, /* Chooses between 12MHz and 48MHz */ - .set_rate = &set_uart_rate, - .recalc = &uart_recalc, -}; - -static struct clk uart3_16xx = { - .name = "uart3_ck", - /* Direct from ULPD, no parent */ - .rate = 48000000, - .flags = CLOCK_IN_OMAP16XX | RATE_FIXED | ENABLE_REG_32BIT, - .enable_reg = MOD_CONF_CTRL_0, - .enable_bit = 31, -}; - -static struct clk usb_clko = { /* 6 MHz output on W4_USB_CLKO */ - .name = "usb_clko", - /* Direct from ULPD, no parent */ - .rate = 6000000, - .flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | - RATE_FIXED | ENABLE_REG_32BIT, - .enable_reg = ULPD_CLOCK_CTRL, - .enable_bit = USB_MCLK_EN_BIT, -}; - -static struct clk usb_hhc_ck1510 = { - .name = "usb_hhc_ck", - /* Direct from ULPD, no parent */ - .rate = 48000000, /* Actually 2 clocks, 12MHz and 48MHz */ - .flags = CLOCK_IN_OMAP1510 | - RATE_FIXED | ENABLE_REG_32BIT, - .enable_reg = MOD_CONF_CTRL_0, - .enable_bit = USB_HOST_HHC_UHOST_EN, -}; - -static struct clk usb_hhc_ck16xx = { - .name = "usb_hhc_ck", - /* Direct from ULPD, no parent */ - .rate = 48000000, - /* OTG_SYSCON_2.OTG_PADEN == 0 (not 1510-compatible) */ - .flags = CLOCK_IN_OMAP16XX | - RATE_FIXED | ENABLE_REG_32BIT, - .enable_reg = OTG_BASE + 0x08 /* OTG_SYSCON_2 */, - .enable_bit = 8 /* UHOST_EN */, -}; - -static struct clk usb_dc_ck = { - .name = "usb_dc_ck", - /* Direct from ULPD, no parent */ - .rate = 48000000, - .flags = CLOCK_IN_OMAP16XX | RATE_FIXED, - .enable_reg = SOFT_REQ_REG, - .enable_bit = 4, -}; - -static struct clk mclk_1510 = { - .name = "mclk", - /* Direct from ULPD, no parent. May be enabled by ext hardware. */ - .rate = 12000000, - .flags = CLOCK_IN_OMAP1510 | RATE_FIXED, -}; - -static struct clk mclk_16xx = { - .name = "mclk", - /* Direct from ULPD, no parent. May be enabled by ext hardware. */ - .flags = CLOCK_IN_OMAP16XX, - .enable_reg = COM_CLK_DIV_CTRL_SEL, - .enable_bit = COM_ULPD_PLL_CLK_REQ, - .set_rate = &set_ext_clk_rate, - .round_rate = &round_ext_clk_rate, - .init = &init_ext_clk, -}; - -static struct clk bclk_1510 = { - .name = "bclk", - /* Direct from ULPD, no parent. May be enabled by ext hardware. */ - .rate = 12000000, - .flags = CLOCK_IN_OMAP1510 | RATE_FIXED, -}; - -static struct clk bclk_16xx = { - .name = "bclk", - /* Direct from ULPD, no parent. May be enabled by ext hardware. */ - .flags = CLOCK_IN_OMAP16XX, - .enable_reg = SWD_CLK_DIV_CTRL_SEL, - .enable_bit = SWD_ULPD_PLL_CLK_REQ, - .set_rate = &set_ext_clk_rate, - .round_rate = &round_ext_clk_rate, - .init = &init_ext_clk, -}; - -static struct clk mmc1_ck = { - .name = "mmc1_ck", - /* Functional clock is direct from ULPD, interface clock is ARMPER */ - .parent = &armper_ck, - .rate = 48000000, - .flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | - RATE_FIXED | ENABLE_REG_32BIT, - .enable_reg = MOD_CONF_CTRL_0, - .enable_bit = 23, -}; - -static struct clk mmc2_ck = { - .name = "mmc2_ck", - /* Functional clock is direct from ULPD, interface clock is ARMPER */ - .parent = &armper_ck, - .rate = 48000000, - .flags = CLOCK_IN_OMAP16XX | - RATE_FIXED | ENABLE_REG_32BIT, - .enable_reg = MOD_CONF_CTRL_0, - .enable_bit = 20, -}; - -static struct clk virtual_ck_mpu = { - .name = "mpu", - .flags = CLOCK_IN_OMAP1510 | CLOCK_IN_OMAP16XX | - VIRTUAL_CLOCK | ALWAYS_ENABLED, - .parent = &arm_ck, /* Is smarter alias for */ - .recalc = &followparent_recalc, - .set_rate = &select_table_rate, - .round_rate = &round_to_table_rate, -}; - - -static struct clk * onchip_clks[] = { - /* non-ULPD clocks */ - &ck_ref, - &ck_dpll1, - /* CK_GEN1 clocks */ - &ck_dpll1out, - &arm_ck, - &armper_ck, - &arm_gpio_ck, - &armxor_ck, - &armtim_ck, - &armwdt_ck, - &arminth_ck1510, &arminth_ck16xx, - /* CK_GEN2 clocks */ - &dsp_ck, - &dspmmu_ck, - &dspper_ck, - &dspxor_ck, - &dsptim_ck, - /* CK_GEN3 clocks */ - &tc_ck, - &tipb_ck, - &l3_ocpi_ck, - &tc1_ck, - &tc2_ck, - &dma_ck, - &dma_lcdfree_ck, - &api_ck, - &lb_ck, - &rhea1_ck, - &rhea2_ck, - &lcd_ck, - /* ULPD clocks */ - &uart1_1510, - &uart1_16xx, - &uart2_ck, - &uart3_1510, - &uart3_16xx, - &usb_clko, - &usb_hhc_ck1510, &usb_hhc_ck16xx, - &usb_dc_ck, - &mclk_1510, &mclk_16xx, - &bclk_1510, &bclk_16xx, - &mmc1_ck, - &mmc2_ck, - /* Virtual clocks */ - &virtual_ck_mpu, -}; - -struct clk *clk_get(struct device *dev, const char *id) +struct clk * clk_get(struct device *dev, const char *id) { struct clk *p, *clk = ERR_PTR(-ENOENT); @@ -589,534 +53,200 @@ struct clk *clk_get(struct device *dev, const char *id) } EXPORT_SYMBOL(clk_get); - -void clk_put(struct clk *clk) -{ - if (clk && !IS_ERR(clk)) - module_put(clk->owner); -} -EXPORT_SYMBOL(clk_put); - - -int __clk_enable(struct clk *clk) -{ - __u16 regval16; - __u32 regval32; - - if (clk->flags & ALWAYS_ENABLED) - return 0; - - if (unlikely(clk->enable_reg == 0)) { - printk(KERN_ERR "clock.c: Enable for %s without enable code\n", - clk->name); - return 0; - } - - if (clk->flags & DSP_DOMAIN_CLOCK) { - __clk_use(&api_ck); - } - - if (clk->flags & ENABLE_REG_32BIT) { - if (clk->flags & VIRTUAL_IO_ADDRESS) { - regval32 = __raw_readl(clk->enable_reg); - regval32 |= (1 << clk->enable_bit); - __raw_writel(regval32, clk->enable_reg); - } else { - regval32 = omap_readl(clk->enable_reg); - regval32 |= (1 << clk->enable_bit); - omap_writel(regval32, clk->enable_reg); - } - } else { - if (clk->flags & VIRTUAL_IO_ADDRESS) { - regval16 = __raw_readw(clk->enable_reg); - regval16 |= (1 << clk->enable_bit); - __raw_writew(regval16, clk->enable_reg); - } else { - regval16 = omap_readw(clk->enable_reg); - regval16 |= (1 << clk->enable_bit); - omap_writew(regval16, clk->enable_reg); - } - } - - if (clk->flags & DSP_DOMAIN_CLOCK) { - __clk_unuse(&api_ck); - } - - return 0; -} - - -void __clk_disable(struct clk *clk) -{ - __u16 regval16; - __u32 regval32; - - if (clk->enable_reg == 0) - return; - - if (clk->flags & DSP_DOMAIN_CLOCK) { - __clk_use(&api_ck); - } - - if (clk->flags & ENABLE_REG_32BIT) { - if (clk->flags & VIRTUAL_IO_ADDRESS) { - regval32 = __raw_readl(clk->enable_reg); - regval32 &= ~(1 << clk->enable_bit); - __raw_writel(regval32, clk->enable_reg); - } else { - regval32 = omap_readl(clk->enable_reg); - regval32 &= ~(1 << clk->enable_bit); - omap_writel(regval32, clk->enable_reg); - } - } else { - if (clk->flags & VIRTUAL_IO_ADDRESS) { - regval16 = __raw_readw(clk->enable_reg); - regval16 &= ~(1 << clk->enable_bit); - __raw_writew(regval16, clk->enable_reg); - } else { - regval16 = omap_readw(clk->enable_reg); - regval16 &= ~(1 << clk->enable_bit); - omap_writew(regval16, clk->enable_reg); - } - } - - if (clk->flags & DSP_DOMAIN_CLOCK) { - __clk_unuse(&api_ck); - } -} - - -void __clk_unuse(struct clk *clk) -{ - if (clk->usecount > 0 && !(--clk->usecount)) { - __clk_disable(clk); - if (likely(clk->parent)) - __clk_unuse(clk->parent); - } -} - - -int __clk_use(struct clk *clk) -{ - int ret = 0; - if (clk->usecount++ == 0) { - if (likely(clk->parent)) - ret = __clk_use(clk->parent); - - if (unlikely(ret != 0)) { - clk->usecount--; - return ret; - } - - ret = __clk_enable(clk); - - if (unlikely(ret != 0) && clk->parent) { - __clk_unuse(clk->parent); - clk->usecount--; - } - } - - return ret; -} - - int clk_enable(struct clk *clk) { unsigned long flags; - int ret; + int ret = 0; spin_lock_irqsave(&clockfw_lock, flags); - ret = __clk_enable(clk); + if (clk->enable) + ret = clk->enable(clk); + else if (arch_clock->clk_enable) + ret = arch_clock->clk_enable(clk); + else + printk(KERN_ERR "Could not enable clock %s\n", clk->name); spin_unlock_irqrestore(&clockfw_lock, flags); + return ret; } EXPORT_SYMBOL(clk_enable); - void clk_disable(struct clk *clk) { unsigned long flags; spin_lock_irqsave(&clockfw_lock, flags); - __clk_disable(clk); + if (clk->disable) + clk->disable(clk); + else if (arch_clock->clk_disable) + arch_clock->clk_disable(clk); + else + printk(KERN_ERR "Could not disable clock %s\n", clk->name); spin_unlock_irqrestore(&clockfw_lock, flags); } EXPORT_SYMBOL(clk_disable); - int clk_use(struct clk *clk) { unsigned long flags; int ret = 0; spin_lock_irqsave(&clockfw_lock, flags); - ret = __clk_use(clk); + if (arch_clock->clk_use) + ret = arch_clock->clk_use(clk); spin_unlock_irqrestore(&clockfw_lock, flags); + return ret; } EXPORT_SYMBOL(clk_use); - void clk_unuse(struct clk *clk) { unsigned long flags; spin_lock_irqsave(&clockfw_lock, flags); - __clk_unuse(clk); + if (arch_clock->clk_unuse) + arch_clock->clk_unuse(clk); spin_unlock_irqrestore(&clockfw_lock, flags); } EXPORT_SYMBOL(clk_unuse); - int clk_get_usecount(struct clk *clk) { - return clk->usecount; -} -EXPORT_SYMBOL(clk_get_usecount); - - -unsigned long clk_get_rate(struct clk *clk) -{ - return clk->rate; -} -EXPORT_SYMBOL(clk_get_rate); - - -static __u16 verify_ckctl_value(__u16 newval) -{ - /* This function checks for following limitations set - * by the hardware (all conditions must be true): - * DSPMMU_CK == DSP_CK or DSPMMU_CK == DSP_CK/2 - * ARM_CK >= TC_CK - * DSP_CK >= TC_CK - * DSPMMU_CK >= TC_CK - * - * In addition following rules are enforced: - * LCD_CK <= TC_CK - * ARMPER_CK <= TC_CK - * - * However, maximum frequencies are not checked for! - */ - __u8 per_exp; - __u8 lcd_exp; - __u8 arm_exp; - __u8 dsp_exp; - __u8 tc_exp; - __u8 dspmmu_exp; - - per_exp = (newval >> CKCTL_PERDIV_OFFSET) & 3; - lcd_exp = (newval >> CKCTL_LCDDIV_OFFSET) & 3; - arm_exp = (newval >> CKCTL_ARMDIV_OFFSET) & 3; - dsp_exp = (newval >> CKCTL_DSPDIV_OFFSET) & 3; - tc_exp = (newval >> CKCTL_TCDIV_OFFSET) & 3; - dspmmu_exp = (newval >> CKCTL_DSPMMUDIV_OFFSET) & 3; - - if (dspmmu_exp < dsp_exp) - dspmmu_exp = dsp_exp; - if (dspmmu_exp > dsp_exp+1) - dspmmu_exp = dsp_exp+1; - if (tc_exp < arm_exp) - tc_exp = arm_exp; - if (tc_exp < dspmmu_exp) - tc_exp = dspmmu_exp; - if (tc_exp > lcd_exp) - lcd_exp = tc_exp; - if (tc_exp > per_exp) - per_exp = tc_exp; + unsigned long flags; + int ret = 0; - newval &= 0xf000; - newval |= per_exp << CKCTL_PERDIV_OFFSET; - newval |= lcd_exp << CKCTL_LCDDIV_OFFSET; - newval |= arm_exp << CKCTL_ARMDIV_OFFSET; - newval |= dsp_exp << CKCTL_DSPDIV_OFFSET; - newval |= tc_exp << CKCTL_TCDIV_OFFSET; - newval |= dspmmu_exp << CKCTL_DSPMMUDIV_OFFSET; + spin_lock_irqsave(&clockfw_lock, flags); + ret = clk->usecount; + spin_unlock_irqrestore(&clockfw_lock, flags); - return newval; + return ret; } +EXPORT_SYMBOL(clk_get_usecount); - -static int calc_dsor_exp(struct clk *clk, unsigned long rate) +unsigned long clk_get_rate(struct clk *clk) { - /* Note: If target frequency is too low, this function will return 4, - * which is invalid value. Caller must check for this value and act - * accordingly. - * - * Note: This function does not check for following limitations set - * by the hardware (all conditions must be true): - * DSPMMU_CK == DSP_CK or DSPMMU_CK == DSP_CK/2 - * ARM_CK >= TC_CK - * DSP_CK >= TC_CK - * DSPMMU_CK >= TC_CK - */ - unsigned long realrate; - struct clk * parent; - unsigned dsor_exp; - - if (unlikely(!(clk->flags & RATE_CKCTL))) - return -EINVAL; - - parent = clk->parent; - if (unlikely(parent == 0)) - return -EIO; - - realrate = parent->rate; - for (dsor_exp=0; dsor_exp<4; dsor_exp++) { - if (realrate <= rate) - break; + unsigned long flags; + unsigned long ret = 0; - realrate /= 2; - } + spin_lock_irqsave(&clockfw_lock, flags); + ret = clk->rate; + spin_unlock_irqrestore(&clockfw_lock, flags); - return dsor_exp; + return ret; } +EXPORT_SYMBOL(clk_get_rate); - -static void ckctl_recalc(struct clk * clk) +void clk_put(struct clk *clk) { - int dsor; - - /* Calculate divisor encoded as 2-bit exponent */ - if (clk->flags & DSP_DOMAIN_CLOCK) { - /* The clock control bits are in DSP domain, - * so api_ck is needed for access. - * Note that DSP_CKCTL virt addr = phys addr, so - * we must use __raw_readw() instead of omap_readw(). - */ - __clk_use(&api_ck); - dsor = 1 << (3 & (__raw_readw(DSP_CKCTL) >> clk->rate_offset)); - __clk_unuse(&api_ck); - } else { - dsor = 1 << (3 & (omap_readw(ARM_CKCTL) >> clk->rate_offset)); - } - if (unlikely(clk->rate == clk->parent->rate / dsor)) - return; /* No change, quick exit */ - clk->rate = clk->parent->rate / dsor; - - if (unlikely(clk->flags & RATE_PROPAGATES)) - propagate_rate(clk); + if (clk && !IS_ERR(clk)) + module_put(clk->owner); } +EXPORT_SYMBOL(clk_put); +/*------------------------------------------------------------------------- + * Optional clock functions defined in asm/hardware/clock.h + *-------------------------------------------------------------------------*/ long clk_round_rate(struct clk *clk, unsigned long rate) { - int dsor_exp; - - if (clk->flags & RATE_FIXED) - return clk->rate; - - if (clk->flags & RATE_CKCTL) { - dsor_exp = calc_dsor_exp(clk, rate); - if (dsor_exp < 0) - return dsor_exp; - if (dsor_exp > 3) - dsor_exp = 3; - return clk->parent->rate / (1 << dsor_exp); - } + unsigned long flags; + long ret = 0; - if(clk->round_rate != 0) - return clk->round_rate(clk, rate); + spin_lock_irqsave(&clockfw_lock, flags); + if (arch_clock->clk_round_rate) + ret = arch_clock->clk_round_rate(clk, rate); + spin_unlock_irqrestore(&clockfw_lock, flags); - return clk->rate; + return ret; } EXPORT_SYMBOL(clk_round_rate); - -static void propagate_rate(struct clk * clk) -{ - struct clk ** clkp; - - for (clkp = onchip_clks; clkp < onchip_clks+ARRAY_SIZE(onchip_clks); clkp++) { - if (likely((*clkp)->parent != clk)) continue; - if (likely((*clkp)->recalc)) - (*clkp)->recalc(*clkp); - } -} - - -static int select_table_rate(struct clk * clk, unsigned long rate) +int clk_set_rate(struct clk *clk, unsigned long rate) { - /* Find the highest supported frequency <= rate and switch to it */ - struct mpu_rate * ptr; - - if (clk != &virtual_ck_mpu) - return -EINVAL; - - for (ptr = rate_table; ptr->rate; ptr++) { - if (ptr->xtal != ck_ref.rate) - continue; - - /* DPLL1 cannot be reprogrammed without risking system crash */ - if (likely(ck_dpll1.rate!=0) && ptr->pll_rate != ck_dpll1.rate) - continue; - - /* Can check only after xtal frequency check */ - if (ptr->rate <= rate) - break; - } - - if (!ptr->rate) - return -EINVAL; + unsigned long flags; + int ret = 0; - /* - * In most cases we should not need to reprogram DPLL. - * Reprogramming the DPLL is tricky, it must be done from SRAM. - */ - omap_sram_reprogram_clock(ptr->dpllctl_val, ptr->ckctl_val); + spin_lock_irqsave(&clockfw_lock, flags); + if (arch_clock->clk_set_rate) + ret = arch_clock->clk_set_rate(clk, rate); + spin_unlock_irqrestore(&clockfw_lock, flags); - ck_dpll1.rate = ptr->pll_rate; - propagate_rate(&ck_dpll1); - return 0; + return ret; } +EXPORT_SYMBOL(clk_set_rate); - -static long round_to_table_rate(struct clk * clk, unsigned long rate) +int clk_set_parent(struct clk *clk, struct clk *parent) { - /* Find the highest supported frequency <= rate */ - struct mpu_rate * ptr; - long highest_rate; - - if (clk != &virtual_ck_mpu) - return -EINVAL; - - highest_rate = -EINVAL; - - for (ptr = rate_table; ptr->rate; ptr++) { - if (ptr->xtal != ck_ref.rate) - continue; - - highest_rate = ptr->rate; + unsigned long flags; + int ret = 0; - /* Can check only after xtal frequency check */ - if (ptr->rate <= rate) - break; - } + spin_lock_irqsave(&clockfw_lock, flags); + if (arch_clock->clk_set_parent) + ret = arch_clock->clk_set_parent(clk, parent); + spin_unlock_irqrestore(&clockfw_lock, flags); - return highest_rate; + return ret; } +EXPORT_SYMBOL(clk_set_parent); - -int clk_set_rate(struct clk *clk, unsigned long rate) +struct clk *clk_get_parent(struct clk *clk) { - int ret = -EINVAL; - int dsor_exp; - __u16 regval; - unsigned long flags; - - if (clk->flags & RATE_CKCTL) { - dsor_exp = calc_dsor_exp(clk, rate); - if (dsor_exp > 3) - dsor_exp = -EINVAL; - if (dsor_exp < 0) - return dsor_exp; - - spin_lock_irqsave(&clockfw_lock, flags); - regval = omap_readw(ARM_CKCTL); - regval &= ~(3 << clk->rate_offset); - regval |= dsor_exp << clk->rate_offset; - regval = verify_ckctl_value(regval); - omap_writew(regval, ARM_CKCTL); - clk->rate = clk->parent->rate / (1 << dsor_exp); - spin_unlock_irqrestore(&clockfw_lock, flags); - ret = 0; - } else if(clk->set_rate != 0) { - spin_lock_irqsave(&clockfw_lock, flags); - ret = clk->set_rate(clk, rate); - spin_unlock_irqrestore(&clockfw_lock, flags); - } + unsigned long flags; + struct clk * ret = NULL; - if (unlikely(ret == 0 && (clk->flags & RATE_PROPAGATES))) - propagate_rate(clk); + spin_lock_irqsave(&clockfw_lock, flags); + if (arch_clock->clk_get_parent) + ret = arch_clock->clk_get_parent(clk); + spin_unlock_irqrestore(&clockfw_lock, flags); return ret; } -EXPORT_SYMBOL(clk_set_rate); +EXPORT_SYMBOL(clk_get_parent); +/*------------------------------------------------------------------------- + * OMAP specific clock functions shared between omap1 and omap2 + *-------------------------------------------------------------------------*/ -static unsigned calc_ext_dsor(unsigned long rate) -{ - unsigned dsor; +unsigned int __initdata mpurate; - /* MCLK and BCLK divisor selection is not linear: - * freq = 96MHz / dsor - * - * RATIO_SEL range: dsor <-> RATIO_SEL - * 0..6: (RATIO_SEL+2) <-> (dsor-2) - * 6..48: (8+(RATIO_SEL-6)*2) <-> ((dsor-8)/2+6) - * Minimum dsor is 2 and maximum is 96. Odd divisors starting from 9 - * can not be used. - */ - for (dsor = 2; dsor < 96; ++dsor) { - if ((dsor & 1) && dsor > 8) - continue; - if (rate >= 96000000 / dsor) - break; - } - return dsor; -} - -/* Only needed on 1510 */ -static int set_uart_rate(struct clk * clk, unsigned long rate) -{ - unsigned int val; - - val = omap_readl(clk->enable_reg); - if (rate == 12000000) - val &= ~(1 << clk->enable_bit); - else if (rate == 48000000) - val |= (1 << clk->enable_bit); - else - return -EINVAL; - omap_writel(val, clk->enable_reg); - clk->rate = rate; - - return 0; -} - -static int set_ext_clk_rate(struct clk * clk, unsigned long rate) +/* + * By default we use the rate set by the bootloader. + * You can override this with mpurate= cmdline option. + */ +static int __init omap_clk_setup(char *str) { - unsigned dsor; - __u16 ratio_bits; + get_option(&str, &mpurate); - dsor = calc_ext_dsor(rate); - clk->rate = 96000000 / dsor; - if (dsor > 8) - ratio_bits = ((dsor - 8) / 2 + 6) << 2; - else - ratio_bits = (dsor - 2) << 2; + if (!mpurate) + return 1; - ratio_bits |= omap_readw(clk->enable_reg) & ~0xfd; - omap_writew(ratio_bits, clk->enable_reg); + if (mpurate < 1000) + mpurate *= 1000000; - return 0; + return 1; } +__setup("mpurate=", omap_clk_setup); - -static long round_ext_clk_rate(struct clk * clk, unsigned long rate) +/* Used for clocks that always have same value as the parent clock */ +void followparent_recalc(struct clk *clk) { - return 96000000 / calc_ext_dsor(rate); + clk->rate = clk->parent->rate; } - -static void init_ext_clk(struct clk * clk) +/* Propagate rate to children */ +void propagate_rate(struct clk * tclk) { - unsigned dsor; - __u16 ratio_bits; + struct clk *clkp; - /* Determine current rate and ensure clock is based on 96MHz APLL */ - ratio_bits = omap_readw(clk->enable_reg) & ~1; - omap_writew(ratio_bits, clk->enable_reg); - - ratio_bits = (ratio_bits & 0xfc) >> 2; - if (ratio_bits > 6) - dsor = (ratio_bits - 6) * 2 + 8; - else - dsor = ratio_bits + 2; - - clk-> rate = 96000000 / dsor; + list_for_each_entry(clkp, &clocks, node) { + if (likely(clkp->parent != tclk)) + continue; + if (likely((u32)clkp->recalc)) + clkp->recalc(clkp); + } } - int clk_register(struct clk *clk) { down(&clocks_sem); @@ -1124,6 +254,7 @@ int clk_register(struct clk *clk) if (clk->init) clk->init(clk); up(&clocks_sem); + return 0; } EXPORT_SYMBOL(clk_register); @@ -1136,203 +267,38 @@ void clk_unregister(struct clk *clk) } EXPORT_SYMBOL(clk_unregister); -#ifdef CONFIG_OMAP_RESET_CLOCKS -/* - * Resets some clocks that may be left on from bootloader, - * but leaves serial clocks on. See also omap_late_clk_reset(). - */ -static inline void omap_early_clk_reset(void) +void clk_deny_idle(struct clk *clk) { - //omap_writel(0x3 << 29, MOD_CONF_CTRL_0); + unsigned long flags; + + spin_lock_irqsave(&clockfw_lock, flags); + if (arch_clock->clk_deny_idle) + arch_clock->clk_deny_idle(clk); + spin_unlock_irqrestore(&clockfw_lock, flags); } -#else -#define omap_early_clk_reset() {} -#endif +EXPORT_SYMBOL(clk_deny_idle); -int __init clk_init(void) +void clk_allow_idle(struct clk *clk) { - struct clk ** clkp; - const struct omap_clock_config *info; - int crystal_type = 0; /* Default 12 MHz */ - - omap_early_clk_reset(); - - for (clkp = onchip_clks; clkp < onchip_clks+ARRAY_SIZE(onchip_clks); clkp++) { - if (((*clkp)->flags &CLOCK_IN_OMAP1510) && cpu_is_omap1510()) { - clk_register(*clkp); - continue; - } - - if (((*clkp)->flags &CLOCK_IN_OMAP16XX) && cpu_is_omap16xx()) { - clk_register(*clkp); - continue; - } - - if (((*clkp)->flags &CLOCK_IN_OMAP730) && cpu_is_omap730()) { - clk_register(*clkp); - continue; - } - } - - info = omap_get_config(OMAP_TAG_CLOCK, struct omap_clock_config); - if (info != NULL) { - if (!cpu_is_omap1510()) - crystal_type = info->system_clock_type; - } - -#if defined(CONFIG_ARCH_OMAP730) - ck_ref.rate = 13000000; -#elif defined(CONFIG_ARCH_OMAP16XX) - if (crystal_type == 2) - ck_ref.rate = 19200000; -#endif - - printk("Clocks: ARM_SYSST: 0x%04x DPLL_CTL: 0x%04x ARM_CKCTL: 0x%04x\n", - omap_readw(ARM_SYSST), omap_readw(DPLL_CTL), - omap_readw(ARM_CKCTL)); - - /* We want to be in syncronous scalable mode */ - omap_writew(0x1000, ARM_SYSST); - -#ifdef CONFIG_OMAP_CLOCKS_SET_BY_BOOTLOADER - /* Use values set by bootloader. Determine PLL rate and recalculate - * dependent clocks as if kernel had changed PLL or divisors. - */ - { - unsigned pll_ctl_val = omap_readw(DPLL_CTL); - - ck_dpll1.rate = ck_ref.rate; /* Base xtal rate */ - if (pll_ctl_val & 0x10) { - /* PLL enabled, apply multiplier and divisor */ - if (pll_ctl_val & 0xf80) - ck_dpll1.rate *= (pll_ctl_val & 0xf80) >> 7; - ck_dpll1.rate /= ((pll_ctl_val & 0x60) >> 5) + 1; - } else { - /* PLL disabled, apply bypass divisor */ - switch (pll_ctl_val & 0xc) { - case 0: - break; - case 0x4: - ck_dpll1.rate /= 2; - break; - default: - ck_dpll1.rate /= 4; - break; - } - } - } - propagate_rate(&ck_dpll1); -#else - /* Find the highest supported frequency and enable it */ - if (select_table_rate(&virtual_ck_mpu, ~0)) { - printk(KERN_ERR "System frequencies not set. Check your config.\n"); - /* Guess sane values (60MHz) */ - omap_writew(0x2290, DPLL_CTL); - omap_writew(0x1005, ARM_CKCTL); - ck_dpll1.rate = 60000000; - propagate_rate(&ck_dpll1); - } -#endif - /* Cache rates for clocks connected to ck_ref (not dpll1) */ - propagate_rate(&ck_ref); - printk(KERN_INFO "Clocking rate (xtal/DPLL1/MPU): " - "%ld.%01ld/%ld.%01ld/%ld.%01ld MHz\n", - ck_ref.rate / 1000000, (ck_ref.rate / 100000) % 10, - ck_dpll1.rate / 1000000, (ck_dpll1.rate / 100000) % 10, - arm_ck.rate / 1000000, (arm_ck.rate / 100000) % 10); - -#ifdef CONFIG_MACH_OMAP_PERSEUS2 - /* Select slicer output as OMAP input clock */ - omap_writew(omap_readw(OMAP730_PCC_UPLD_CTRL) & ~0x1, OMAP730_PCC_UPLD_CTRL); -#endif - - /* Turn off DSP and ARM_TIMXO. Make sure ARM_INTHCK is not divided */ - omap_writew(omap_readw(ARM_CKCTL) & 0x0fff, ARM_CKCTL); - - /* Put DSP/MPUI into reset until needed */ - omap_writew(0, ARM_RSTCT1); - omap_writew(1, ARM_RSTCT2); - omap_writew(0x400, ARM_IDLECT1); - - /* - * According to OMAP5910 Erratum SYS_DMA_1, bit DMACK_REQ (bit 8) - * of the ARM_IDLECT2 register must be set to zero. The power-on - * default value of this bit is one. - */ - omap_writew(0x0000, ARM_IDLECT2); /* Turn LCD clock off also */ - - /* - * Only enable those clocks we will need, let the drivers - * enable other clocks as necessary - */ - clk_use(&armper_ck); - clk_use(&armxor_ck); - clk_use(&armtim_ck); - - if (cpu_is_omap1510()) - clk_enable(&arm_gpio_ck); + unsigned long flags; - return 0; + spin_lock_irqsave(&clockfw_lock, flags); + if (arch_clock->clk_allow_idle) + arch_clock->clk_allow_idle(clk); + spin_unlock_irqrestore(&clockfw_lock, flags); } +EXPORT_SYMBOL(clk_allow_idle); +/*-------------------------------------------------------------------------*/ -#ifdef CONFIG_OMAP_RESET_CLOCKS - -static int __init omap_late_clk_reset(void) +int __init clk_init(struct clk_functions * custom_clocks) { - /* Turn off all unused clocks */ - struct clk *p; - __u32 regval32; - - /* USB_REQ_EN will be disabled later if necessary (usb_dc_ck) */ - regval32 = omap_readw(SOFT_REQ_REG) & (1 << 4); - omap_writew(regval32, SOFT_REQ_REG); - omap_writew(0, SOFT_REQ_REG2); - - list_for_each_entry(p, &clocks, node) { - if (p->usecount > 0 || (p->flags & ALWAYS_ENABLED) || - p->enable_reg == 0) - continue; - - /* Assume no DSP clocks have been activated by bootloader */ - if (p->flags & DSP_DOMAIN_CLOCK) - continue; - - /* Is the clock already disabled? */ - if (p->flags & ENABLE_REG_32BIT) { - if (p->flags & VIRTUAL_IO_ADDRESS) - regval32 = __raw_readl(p->enable_reg); - else - regval32 = omap_readl(p->enable_reg); - } else { - if (p->flags & VIRTUAL_IO_ADDRESS) - regval32 = __raw_readw(p->enable_reg); - else - regval32 = omap_readw(p->enable_reg); - } - - if ((regval32 & (1 << p->enable_bit)) == 0) - continue; - - /* FIXME: This clock seems to be necessary but no-one - * has asked for its activation. */ - if (p == &tc2_ck // FIX: pm.c (SRAM), CCP, Camera - || p == &ck_dpll1out // FIX: SoSSI, SSR - || p == &arm_gpio_ck // FIX: GPIO code for 1510 - ) { - printk(KERN_INFO "FIXME: Clock \"%s\" seems unused\n", - p->name); - continue; - } - - printk(KERN_INFO "Disabling unused clock \"%s\"... ", p->name); - __clk_disable(p); - printk(" done\n"); + if (!custom_clocks) { + printk(KERN_ERR "No custom clock functions registered\n"); + BUG(); } + arch_clock = custom_clocks; + return 0; } - -late_initcall(omap_late_clk_reset); - -#endif |