diff options
author | Wolfgang Denk <wd@denx.de> | 2009-06-17 08:30:22 +0200 |
---|---|---|
committer | Grant Likely <grant.likely@secretlab.ca> | 2009-06-17 08:30:22 +0200 |
commit | 87c441e54dfcf9f45593ecaf68e7e18ea53d5e13 (patch) | |
tree | 6a986caab77412a90ffe8c5d8788bc1216b10ed8 | |
parent | powerpc/5200: Update pcm030.dts to add i2c eeprom and delete cruft (diff) | |
download | linux-87c441e54dfcf9f45593ecaf68e7e18ea53d5e13.tar.xz linux-87c441e54dfcf9f45593ecaf68e7e18ea53d5e13.zip |
powerpc/5xxx: Add common mpc5xxx_get_bus_frequency() function
So far, MPC512x used mpc512x_find_ips_freq() to get the bus frequency,
while MPC52xx used mpc52xx_find_ipb_freq(). Despite the different
clock names (IPS vs. IPB) the code was identical.
Use common code for both processor families.
Signed-off-by: Wolfgang Denk <wd@denx.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
-rw-r--r-- | arch/powerpc/include/asm/mpc52xx.h | 2 | ||||
-rw-r--r-- | arch/powerpc/include/asm/mpc5xxx.h (renamed from arch/powerpc/include/asm/mpc512x.h) | 10 | ||||
-rw-r--r-- | arch/powerpc/platforms/512x/clock.c | 2 | ||||
-rw-r--r-- | arch/powerpc/platforms/512x/mpc512x.h | 1 | ||||
-rw-r--r-- | arch/powerpc/platforms/512x/mpc512x_shared.c | 23 | ||||
-rw-r--r-- | arch/powerpc/platforms/52xx/mpc52xx_common.c | 32 | ||||
-rw-r--r-- | arch/powerpc/sysdev/Makefile | 3 | ||||
-rw-r--r-- | arch/powerpc/sysdev/mpc5xxx_clocks.c | 33 | ||||
-rw-r--r-- | drivers/ata/pata_mpc52xx.c | 2 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-mpc.c | 2 | ||||
-rw-r--r-- | drivers/net/fec_mpc52xx.c | 2 | ||||
-rw-r--r-- | drivers/net/fec_mpc52xx_phy.c | 2 | ||||
-rw-r--r-- | drivers/serial/mpc52xx_uart.c | 5 | ||||
-rw-r--r-- | drivers/watchdog/mpc5200_wdt.c | 2 |
14 files changed, 51 insertions, 70 deletions
diff --git a/arch/powerpc/include/asm/mpc52xx.h b/arch/powerpc/include/asm/mpc52xx.h index 52e049cd9e68..1b4f697abbdd 100644 --- a/arch/powerpc/include/asm/mpc52xx.h +++ b/arch/powerpc/include/asm/mpc52xx.h @@ -16,6 +16,7 @@ #ifndef __ASSEMBLY__ #include <asm/types.h> #include <asm/prom.h> +#include <asm/mpc5xxx.h> #endif /* __ASSEMBLY__ */ #include <linux/suspend.h> @@ -268,7 +269,6 @@ struct mpc52xx_intr { #ifndef __ASSEMBLY__ /* mpc52xx_common.c */ -extern unsigned int mpc52xx_find_ipb_freq(struct device_node *node); extern void mpc5200_setup_xlb_arbiter(void); extern void mpc52xx_declare_of_platform_devices(void); extern void mpc52xx_map_common_devices(void); diff --git a/arch/powerpc/include/asm/mpc512x.h b/arch/powerpc/include/asm/mpc5xxx.h index c48a1658eeac..5ce9c5fa434a 100644 --- a/arch/powerpc/include/asm/mpc512x.h +++ b/arch/powerpc/include/asm/mpc5xxx.h @@ -4,7 +4,7 @@ * Author: John Rigby, <jrigby@freescale.com>, Friday Apr 13 2007 * * Description: - * MPC5121 Prototypes and definitions + * MPC5xxx Prototypes and definitions * * This is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by @@ -13,10 +13,10 @@ * */ -#ifndef __ASM_POWERPC_MPC512x_H__ -#define __ASM_POWERPC_MPC512x_H__ +#ifndef __ASM_POWERPC_MPC5xxx_H__ +#define __ASM_POWERPC_MPC5xxx_H__ -extern unsigned long mpc512x_find_ips_freq(struct device_node *node); +extern unsigned long mpc5xxx_get_bus_frequency(struct device_node *node); -#endif /* __ASM_POWERPC_MPC512x_H__ */ +#endif /* __ASM_POWERPC_MPC5xxx_H__ */ diff --git a/arch/powerpc/platforms/512x/clock.c b/arch/powerpc/platforms/512x/clock.c index 1bcff94eb924..f4c4c6f807d7 100644 --- a/arch/powerpc/platforms/512x/clock.c +++ b/arch/powerpc/platforms/512x/clock.c @@ -24,7 +24,7 @@ #include <linux/io.h> #include <linux/of_platform.h> -#include <asm/mpc512x.h> +#include <asm/mpc5xxx.h> #include <asm/clk_interface.h> #undef CLK_DEBUG diff --git a/arch/powerpc/platforms/512x/mpc512x.h b/arch/powerpc/platforms/512x/mpc512x.h index 9c03693cb009..22a5352407e0 100644 --- a/arch/powerpc/platforms/512x/mpc512x.h +++ b/arch/powerpc/platforms/512x/mpc512x.h @@ -11,7 +11,6 @@ #ifndef __MPC512X_H__ #define __MPC512X_H__ -extern unsigned long mpc512x_find_ips_freq(struct device_node *node); extern void __init mpc512x_init_IRQ(void); void __init mpc512x_declare_of_platform_devices(void); #endif /* __MPC512X_H__ */ diff --git a/arch/powerpc/platforms/512x/mpc512x_shared.c b/arch/powerpc/platforms/512x/mpc512x_shared.c index d8cd579f3191..434d683df5a0 100644 --- a/arch/powerpc/platforms/512x/mpc512x_shared.c +++ b/arch/powerpc/platforms/512x/mpc512x_shared.c @@ -24,29 +24,6 @@ #include "mpc512x.h" -unsigned long -mpc512x_find_ips_freq(struct device_node *node) -{ - struct device_node *np; - const unsigned int *p_ips_freq = NULL; - - of_node_get(node); - while (node) { - p_ips_freq = of_get_property(node, "bus-frequency", NULL); - if (p_ips_freq) - break; - - np = of_get_parent(node); - of_node_put(node); - node = np; - } - if (node) - of_node_put(node); - - return p_ips_freq ? *p_ips_freq : 0; -} -EXPORT_SYMBOL(mpc512x_find_ips_freq); - void __init mpc512x_init_IRQ(void) { struct device_node *np; diff --git a/arch/powerpc/platforms/52xx/mpc52xx_common.c b/arch/powerpc/platforms/52xx/mpc52xx_common.c index 8e3dd5a0f228..a46bad0c2339 100644 --- a/arch/powerpc/platforms/52xx/mpc52xx_common.c +++ b/arch/powerpc/platforms/52xx/mpc52xx_common.c @@ -47,36 +47,6 @@ static DEFINE_SPINLOCK(mpc52xx_lock); static struct mpc52xx_gpt __iomem *mpc52xx_wdt; static struct mpc52xx_cdm __iomem *mpc52xx_cdm; -/** - * mpc52xx_find_ipb_freq - Find the IPB bus frequency for a device - * @node: device node - * - * Returns IPB bus frequency, or 0 if the bus frequency cannot be found. - */ -unsigned int -mpc52xx_find_ipb_freq(struct device_node *node) -{ - struct device_node *np; - const unsigned int *p_ipb_freq = NULL; - - of_node_get(node); - while (node) { - p_ipb_freq = of_get_property(node, "bus-frequency", NULL); - if (p_ipb_freq) - break; - - np = of_get_parent(node); - of_node_put(node); - node = np; - } - if (node) - of_node_put(node); - - return p_ipb_freq ? *p_ipb_freq : 0; -} -EXPORT_SYMBOL(mpc52xx_find_ipb_freq); - - /* * Configure the XLB arbiter settings to match what Linux expects. */ @@ -221,7 +191,7 @@ unsigned int mpc52xx_get_xtal_freq(struct device_node *node) if (!mpc52xx_cdm) return 0; - freq = mpc52xx_find_ipb_freq(node); + freq = mpc5xxx_get_bus_frequency(node); if (!freq) return 0; diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile index d073bfdd222a..9d4b17462f13 100644 --- a/arch/powerpc/sysdev/Makefile +++ b/arch/powerpc/sysdev/Makefile @@ -50,6 +50,9 @@ obj-$(CONFIG_PPC_DCR) += dcr.o obj-$(CONFIG_8xx) += mpc8xx_pic.o cpm1.o obj-$(CONFIG_UCODE_PATCH) += micropatch.o +obj-$(CONFIG_PPC_MPC512x) += mpc5xxx_clocks.o +obj-$(CONFIG_PPC_MPC52xx) += mpc5xxx_clocks.o + ifeq ($(CONFIG_SUSPEND),y) obj-$(CONFIG_6xx) += 6xx-suspend.o endif diff --git a/arch/powerpc/sysdev/mpc5xxx_clocks.c b/arch/powerpc/sysdev/mpc5xxx_clocks.c new file mode 100644 index 000000000000..34e12f9995fe --- /dev/null +++ b/arch/powerpc/sysdev/mpc5xxx_clocks.c @@ -0,0 +1,33 @@ +/** + * mpc5xxx_get_bus_frequency - Find the bus frequency for a device + * @node: device node + * + * Returns bus frequency (IPS on MPC512x, IPB on MPC52xx), + * or 0 if the bus frequency cannot be found. + */ + +#include <linux/kernel.h> +#include <linux/of_platform.h> + +unsigned int +mpc5xxx_get_bus_frequency(struct device_node *node) +{ + struct device_node *np; + const unsigned int *p_bus_freq = NULL; + + of_node_get(node); + while (node) { + p_bus_freq = of_get_property(node, "bus-frequency", NULL); + if (p_bus_freq) + break; + + np = of_get_parent(node); + of_node_put(node); + node = np; + } + if (node) + of_node_put(node); + + return p_bus_freq ? *p_bus_freq : 0; +} +EXPORT_SYMBOL(mpc5xxx_get_bus_frequency); diff --git a/drivers/ata/pata_mpc52xx.c b/drivers/ata/pata_mpc52xx.c index 68d27bc70d06..2bc2dbe30e8f 100644 --- a/drivers/ata/pata_mpc52xx.c +++ b/drivers/ata/pata_mpc52xx.c @@ -694,7 +694,7 @@ mpc52xx_ata_probe(struct of_device *op, const struct of_device_id *match) struct bcom_task *dmatsk = NULL; /* Get ipb frequency */ - ipb_freq = mpc52xx_find_ipb_freq(op->node); + ipb_freq = mpc5xxx_get_bus_frequency(op->node); if (!ipb_freq) { dev_err(&op->dev, "could not determine IPB bus frequency\n"); return -ENODEV; diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c index dd778d7ae047..d325e86e3103 100644 --- a/drivers/i2c/busses/i2c-mpc.c +++ b/drivers/i2c/busses/i2c-mpc.c @@ -197,7 +197,7 @@ int mpc_i2c_get_fdr_52xx(struct device_node *node, u32 clock, int prescaler) return -EINVAL; /* Determine divider value */ - divider = mpc52xx_find_ipb_freq(node) / clock; + divider = mpc5xxx_get_bus_frequency(node) / clock; /* * We want to choose an FDR/DFSR that generates an I2C bus speed that diff --git a/drivers/net/fec_mpc52xx.c b/drivers/net/fec_mpc52xx.c index 8bbe7f617994..5ddf03325d16 100644 --- a/drivers/net/fec_mpc52xx.c +++ b/drivers/net/fec_mpc52xx.c @@ -1006,7 +1006,7 @@ mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match) priv->phy_addr = FEC5200_PHYADDR_NONE; priv->speed = 100; priv->duplex = DUPLEX_HALF; - priv->phy_speed = ((mpc52xx_find_ipb_freq(op->node) >> 20) / 5) << 1; + priv->phy_speed = ((mpc5xxx_get_bus_frequency(op->node) >> 20) / 5) << 1; /* the 7-wire property means don't use MII mode */ if (of_find_property(op->node, "fsl,7-wire-mode", NULL)) diff --git a/drivers/net/fec_mpc52xx_phy.c b/drivers/net/fec_mpc52xx_phy.c index dd9bfa42ac34..176e9b8d7101 100644 --- a/drivers/net/fec_mpc52xx_phy.c +++ b/drivers/net/fec_mpc52xx_phy.c @@ -120,7 +120,7 @@ static int mpc52xx_fec_mdio_probe(struct of_device *of, /* set MII speed */ out_be32(&priv->regs->mii_speed, - ((mpc52xx_find_ipb_freq(of->node) >> 20) / 5) << 1); + ((mpc5xxx_get_bus_frequency(of->node) >> 20) / 5) << 1); err = mdiobus_register(bus); if (err) diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c index b3feb6198d57..abbd146c50d9 100644 --- a/drivers/serial/mpc52xx_uart.c +++ b/drivers/serial/mpc52xx_uart.c @@ -76,7 +76,6 @@ #include <linux/of_platform.h> #include <asm/mpc52xx.h> -#include <asm/mpc512x.h> #include <asm/mpc52xx_psc.h> #if defined(CONFIG_SERIAL_MPC52xx_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) @@ -254,7 +253,7 @@ static unsigned long mpc52xx_getuartclk(void *p) * but the generic serial code assumes 16 * so return ipb freq / 2 */ - return mpc52xx_find_ipb_freq(p) / 2; + return mpc5xxx_get_bus_frequency(p) / 2; } static struct psc_ops mpc52xx_psc_ops = { @@ -391,7 +390,7 @@ static void mpc512x_psc_cw_restore_ints(struct uart_port *port) static unsigned long mpc512x_getuartclk(void *p) { - return mpc512x_find_ips_freq(p); + return mpc5xxx_get_bus_frequency(p); } static struct psc_ops mpc512x_psc_ops = { diff --git a/drivers/watchdog/mpc5200_wdt.c b/drivers/watchdog/mpc5200_wdt.c index 465fe36adad4..fa9c47ce0ae7 100644 --- a/drivers/watchdog/mpc5200_wdt.c +++ b/drivers/watchdog/mpc5200_wdt.c @@ -188,7 +188,7 @@ static int mpc5200_wdt_probe(struct of_device *op, if (!wdt) return -ENOMEM; - wdt->ipb_freq = mpc52xx_find_ipb_freq(op->node); + wdt->ipb_freq = mpc5xxx_get_bus_frequency(op->node); err = of_address_to_resource(op->node, 0, &wdt->mem); if (err) |