diff options
Diffstat (limited to 'target/linux/brcm63xx/files-2.6.30/arch/mips/bcm63xx/clk.c')
-rw-r--r-- | target/linux/brcm63xx/files-2.6.30/arch/mips/bcm63xx/clk.c | 249 |
1 files changed, 0 insertions, 249 deletions
diff --git a/target/linux/brcm63xx/files-2.6.30/arch/mips/bcm63xx/clk.c b/target/linux/brcm63xx/files-2.6.30/arch/mips/bcm63xx/clk.c deleted file mode 100644 index eaf6196..0000000 --- a/target/linux/brcm63xx/files-2.6.30/arch/mips/bcm63xx/clk.c +++ /dev/null @@ -1,249 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr> - */ - -#include <linux/module.h> -#include <linux/mutex.h> -#include <linux/err.h> -#include <linux/clk.h> -#include <bcm63xx_cpu.h> -#include <bcm63xx_io.h> -#include <bcm63xx_regs.h> -#include <bcm63xx_clk.h> - -DEFINE_MUTEX(clocks_mutex); - - -static void clk_enable_unlocked(struct clk *clk) -{ - if (clk->set && (clk->usage++) == 0) - clk->set(clk, 1); -} - -static void clk_disable_unlocked(struct clk *clk) -{ - if (clk->set && (--clk->usage) == 0) - clk->set(clk, 0); -} - -static void bcm_hwclock_set(u32 mask, int enable) -{ - u32 reg; - - reg = bcm_perf_readl(PERF_CKCTL_REG); - if (enable) - reg |= mask; - else - reg &= ~mask; - bcm_perf_writel(reg, PERF_CKCTL_REG); -} - -/* - * Ethernet MAC "misc" clock: dma clocks and main clock on 6348 - */ -static void enet_misc_set(struct clk *clk, int enable) -{ - u32 mask; - - if (BCMCPU_IS_6338()) - mask = CKCTL_6338_ENET_EN; - else if (BCMCPU_IS_6345()) - mask = CKCTL_6345_ENET_EN; - else if (BCMCPU_IS_6348()) - mask = CKCTL_6348_ENET_EN; - else - /* BCMCPU_IS_6358 */ - mask = CKCTL_6358_EMUSB_EN; - bcm_hwclock_set(mask, enable); -} - -static struct clk clk_enet_misc = { - .set = enet_misc_set, -}; - -/* - * Ethernet MAC clocks: only revelant on 6358, silently enable misc - * clocks - */ -static void enetx_set(struct clk *clk, int enable) -{ - if (enable) - clk_enable_unlocked(&clk_enet_misc); - else - clk_disable_unlocked(&clk_enet_misc); - - if (BCMCPU_IS_6358()) { - u32 mask; - - if (clk->id == 0) - mask = CKCTL_6358_ENET0_EN; - else - mask = CKCTL_6358_ENET1_EN; - bcm_hwclock_set(mask, enable); - } -} - -static struct clk clk_enet0 = { - .id = 0, - .set = enetx_set, -}; - -static struct clk clk_enet1 = { - .id = 1, - .set = enetx_set, -}; - -/* - * Ethernet PHY clock - */ -static void ephy_set(struct clk *clk, int enable) -{ - if (!BCMCPU_IS_6358()) - return; - bcm_hwclock_set(CKCTL_6358_EPHY_EN, enable); -} - - -static struct clk clk_ephy = { - .set = ephy_set, -}; - -/* - * PCM clock - */ -static void pcm_set(struct clk *clk, int enable) -{ - if (!BCMCPU_IS_6358()) - return; - bcm_hwclock_set(CKCTL_6358_PCM_EN, enable); -} - -static struct clk clk_pcm = { - .set = pcm_set, -}; - -/* - * USB host clock - */ -static void usbh_set(struct clk *clk, int enable) -{ - if (!BCMCPU_IS_6348()) - return; - bcm_hwclock_set(CKCTL_6348_USBH_EN, enable); -} - -static struct clk clk_usbh = { - .set = usbh_set, -}; - -/* - * USB slave clock - */ -static void usbs_set(struct clk *clk, int enable) -{ - u32 mask; - - switch(bcm63xx_get_cpu_id()) { - case BCM6338_CPU_ID: mask = CKCTL_6338_USBS_EN; break; - case BCM6345_CPU_ID: mask = CKCTL_6345_USBS_EN; break; - case BCM6348_CPU_ID: mask = CKCTL_6348_USBS_EN; break; - default: - return; - } - bcm_hwclock_set(mask, enable); -} - -static struct clk clk_usbs = { - .set = usbs_set, -}; - -/* - * SPI clock - */ -static void spi_set(struct clk *clk, int enable) -{ - u32 mask; - - if (BCMCPU_IS_6338()) - mask = CKCTL_6338_SPI_EN; - else if (BCMCPU_IS_6348()) - mask = CKCTL_6348_SPI_EN; - else - /* BCMCPU_IS_6358 */ - mask = CKCTL_6358_SPI_EN; - bcm_hwclock_set(mask, enable); -} - -static struct clk clk_spi = { - .set = spi_set, -}; - -/* - * Internal peripheral clock - */ -static struct clk clk_periph = { - .rate = (50 * 1000 * 1000), -}; - - -/* - * Linux clock API implementation - */ -int clk_enable(struct clk *clk) -{ - mutex_lock(&clocks_mutex); - clk_enable_unlocked(clk); - mutex_unlock(&clocks_mutex); - return 0; -} - -EXPORT_SYMBOL(clk_enable); - -void clk_disable(struct clk *clk) -{ - mutex_lock(&clocks_mutex); - clk_disable_unlocked(clk); - mutex_unlock(&clocks_mutex); -} - -EXPORT_SYMBOL(clk_disable); - -unsigned long clk_get_rate(struct clk *clk) -{ - return clk->rate; -} - -EXPORT_SYMBOL(clk_get_rate); - -struct clk *clk_get(struct device *dev, const char *id) -{ - if (!strcmp(id, "enet0")) - return &clk_enet0; - if (!strcmp(id, "enet1")) - return &clk_enet1; - if (!strcmp(id, "ephy")) - return &clk_ephy; - if (!strcmp(id, "usbh")) - return &clk_usbh; - if (!strcmp(id, "usbs")) - return &clk_usbs; - if (!strcmp(id, "spi")) - return &clk_spi; - if (!strcmp(id, "periph")) - return &clk_periph; - if (BCMCPU_IS_6358() && !strcmp(id, "pcm")) - return &clk_pcm; - return ERR_PTR(-ENOENT); -} - -EXPORT_SYMBOL(clk_get); - -void clk_put(struct clk *clk) -{ -} - -EXPORT_SYMBOL(clk_put); |