diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-kirkwood/mpp.c | 58 | ||||
| -rw-r--r-- | arch/arm/mach-kirkwood/mpp.h | 6 | ||||
| -rw-r--r-- | arch/arm/mach-mv78xx0/mpp.c | 58 | ||||
| -rw-r--r-- | arch/arm/mach-mv78xx0/mpp.h | 6 | ||||
| -rw-r--r-- | arch/arm/plat-orion/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/plat-orion/include/plat/mpp.h | 34 | ||||
| -rw-r--r-- | arch/arm/plat-orion/mpp.c | 81 |
7 files changed, 122 insertions, 123 deletions
diff --git a/arch/arm/mach-kirkwood/mpp.c b/arch/arm/mach-kirkwood/mpp.c index 7ce201848067..b0a7d979a8ed 100644 --- a/arch/arm/mach-kirkwood/mpp.c +++ b/arch/arm/mach-kirkwood/mpp.c @@ -14,6 +14,7 @@ #include <linux/io.h> #include <asm/gpio.h> #include <mach/hardware.h> +#include <plat/mpp.h> #include "common.h" #include "mpp.h" @@ -36,61 +37,8 @@ static unsigned int __init kirkwood_variant(void) return 0; } -#define MPP_CTRL(i) (DEV_BUS_VIRT_BASE + (i) * 4) -#define MPP_NR_REGS (1 + MPP_MAX/8) - void __init kirkwood_mpp_conf(unsigned int *mpp_list) { - u32 mpp_ctrl[MPP_NR_REGS]; - unsigned int variant_mask; - int i; - - variant_mask = kirkwood_variant(); - if (!variant_mask) - return; - - printk(KERN_DEBUG "initial MPP regs:"); - for (i = 0; i < MPP_NR_REGS; i++) { - mpp_ctrl[i] = readl(MPP_CTRL(i)); - printk(" %08x", mpp_ctrl[i]); - } - printk("\n"); - - for ( ; *mpp_list; mpp_list++) { - unsigned int num = MPP_NUM(*mpp_list); - unsigned int sel = MPP_SEL(*mpp_list); - int shift, gpio_mode; - - if (num > MPP_MAX) { - printk(KERN_ERR "kirkwood_mpp_conf: invalid MPP " - "number (%u)\n", num); - continue; - } - if (!(*mpp_list & variant_mask)) { - printk(KERN_WARNING - "kirkwood_mpp_conf: requested MPP%u config " - "unavailable on this hardware\n", num); - continue; - } - - shift = (num & 7) << 2; - mpp_ctrl[num / 8] &= ~(0xf << shift); - mpp_ctrl[num / 8] |= sel << shift; - - gpio_mode = 0; - if (*mpp_list & MPP_INPUT_MASK) - gpio_mode |= GPIO_INPUT_OK; - if (*mpp_list & MPP_OUTPUT_MASK) - gpio_mode |= GPIO_OUTPUT_OK; - if (sel != 0) - gpio_mode = 0; - orion_gpio_set_valid(num, gpio_mode); - } - - printk(KERN_DEBUG " final MPP regs:"); - for (i = 0; i < MPP_NR_REGS; i++) { - writel(mpp_ctrl[i], MPP_CTRL(i)); - printk(" %08x", mpp_ctrl[i]); - } - printk("\n"); + orion_mpp_conf(mpp_list, kirkwood_variant(), + MPP_MAX, DEV_BUS_VIRT_BASE); } diff --git a/arch/arm/mach-kirkwood/mpp.h b/arch/arm/mach-kirkwood/mpp.h index 9b0a94d85c3e..ac787957e2d9 100644 --- a/arch/arm/mach-kirkwood/mpp.h +++ b/arch/arm/mach-kirkwood/mpp.h @@ -22,14 +22,8 @@ /* available on F6281 */ ((!!(_F6281)) << 17) | \ /* available on F6282 */ ((!!(_F6282)) << 18)) -#define MPP_NUM(x) ((x) & 0xff) -#define MPP_SEL(x) (((x) >> 8) & 0xf) - /* num sel i o 6180 6190 6192 6281 6282 */ -#define MPP_INPUT_MASK MPP( 0, 0x0, 1, 0, 0, 0, 0, 0, 0 ) -#define MPP_OUTPUT_MASK MPP( 0, 0x0, 0, 1, 0, 0, 0, 0, 0 ) - #define MPP_F6180_MASK MPP( 0, 0x0, 0, 0, 1, 0, 0, 0, 0 ) #define MPP_F6190_MASK MPP( 0, 0x0, 0, 0, 0, 1, 0, 0, 0 ) #define MPP_F6192_MASK MPP( 0, 0x0, 0, 0, 0, 0, 1, 0, 0 ) diff --git a/arch/arm/mach-mv78xx0/mpp.c b/arch/arm/mach-mv78xx0/mpp.c index 65b72c454cb0..59b7686b9209 100644 --- a/arch/arm/mach-mv78xx0/mpp.c +++ b/arch/arm/mach-mv78xx0/mpp.c @@ -12,6 +12,7 @@ #include <linux/init.h> #include <linux/mbus.h> #include <linux/io.h> +#include <plat/mpp.h> #include <asm/gpio.h> #include <mach/hardware.h> #include "common.h" @@ -31,61 +32,8 @@ static unsigned int __init mv78xx0_variant(void) return 0; } -#define MPP_CTRL(i) (DEV_BUS_VIRT_BASE + (i) * 4) -#define MPP_NR_REGS (1 + MPP_MAX/8) - void __init mv78xx0_mpp_conf(unsigned int *mpp_list) { - u32 mpp_ctrl[MPP_NR_REGS]; - unsigned int variant_mask; - int i; - - variant_mask = mv78xx0_variant(); - if (!variant_mask) - return; - - printk(KERN_DEBUG "initial MPP regs:"); - for (i = 0; i < MPP_NR_REGS; i++) { - mpp_ctrl[i] = readl(MPP_CTRL(i)); - printk(" %08x", mpp_ctrl[i]); - } - printk("\n"); - - for ( ; *mpp_list; mpp_list++) { - unsigned int num = MPP_NUM(*mpp_list); - unsigned int sel = MPP_SEL(*mpp_list); - int shift, gpio_mode; - - if (num > MPP_MAX) { - printk(KERN_ERR "mv78xx0_mpp_conf: invalid MPP " - "number (%u)\n", num); - continue; - } - if (!(*mpp_list & variant_mask)) { - printk(KERN_WARNING - "mv78xx0_mpp_conf: requested MPP%u config " - "unavailable on this hardware\n", num); - continue; - } - - shift = (num & 7) << 2; - mpp_ctrl[num / 8] &= ~(0xf << shift); - mpp_ctrl[num / 8] |= sel << shift; - - gpio_mode = 0; - if (*mpp_list & MPP_INPUT_MASK) - gpio_mode |= GPIO_INPUT_OK; - if (*mpp_list & MPP_OUTPUT_MASK) - gpio_mode |= GPIO_OUTPUT_OK; - if (sel != 0) - gpio_mode = 0; - orion_gpio_set_valid(num, gpio_mode); - } - - printk(KERN_DEBUG " final MPP regs:"); - for (i = 0; i < MPP_NR_REGS; i++) { - writel(mpp_ctrl[i], MPP_CTRL(i)); - printk(" %08x", mpp_ctrl[i]); - } - printk("\n"); + orion_mpp_conf(mpp_list, mv78xx0_variant(), + MPP_MAX, DEV_BUS_VIRT_BASE); } diff --git a/arch/arm/mach-mv78xx0/mpp.h b/arch/arm/mach-mv78xx0/mpp.h index 80840b781eaa..b61b50927123 100644 --- a/arch/arm/mach-mv78xx0/mpp.h +++ b/arch/arm/mach-mv78xx0/mpp.h @@ -19,14 +19,8 @@ /* may be output signal */ ((!!(_out)) << 13) | \ /* available on A0 */ ((!!(_78100_A0)) << 14)) -#define MPP_NUM(x) ((x) & 0xff) -#define MPP_SEL(x) (((x) >> 8) & 0xf) - /* num sel i o 78100_A0 */ -#define MPP_INPUT_MASK MPP(0, 0x0, 1, 0, 0) -#define MPP_OUTPUT_MASK MPP(0, 0x0, 0, 1, 0) - #define MPP_78100_A0_MASK MPP(0, 0x0, 0, 0, 1) #define MPP0_GPIO MPP(0, 0x0, 1, 1, 1) diff --git a/arch/arm/plat-orion/Makefile b/arch/arm/plat-orion/Makefile index 0f048c58b4c9..95a5fc53b6db 100644 --- a/arch/arm/plat-orion/Makefile +++ b/arch/arm/plat-orion/Makefile @@ -2,7 +2,7 @@ # Makefile for the linux kernel. # -obj-y := irq.o pcie.o time.o common.o +obj-y := irq.o pcie.o time.o common.o mpp.o obj-m := obj-n := obj- := diff --git a/arch/arm/plat-orion/include/plat/mpp.h b/arch/arm/plat-orion/include/plat/mpp.h new file mode 100644 index 000000000000..723adce99f41 --- /dev/null +++ b/arch/arm/plat-orion/include/plat/mpp.h @@ -0,0 +1,34 @@ +/* + * arch/arm/plat-orion/include/plat/mpp.h + * + * Marvell Orion SoC MPP handling. + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#ifndef __PLAT_MPP_H +#define __PLAT_MPP_H + +#define MPP_NUM(x) ((x) & 0xff) +#define MPP_SEL(x) (((x) >> 8) & 0xf) + +/* This is the generic MPP macro, without any variant information. + Each machine architecture is expected to extend this with further + bit fields indicating which MPP configurations are valid for a + specific variant. */ + +#define GENERIC_MPP(_num, _sel, _in, _out) ( \ + /* MPP number */ ((_num) & 0xff) | \ + /* MPP select value */ (((_sel) & 0xf) << 8) | \ + /* may be input signal */ ((!!(_in)) << 12) | \ + /* may be output signal */ ((!!(_out)) << 13)) + +#define MPP_INPUT_MASK GENERIC_MPP(0, 0x0, 1, 0) +#define MPP_OUTPUT_MASK GENERIC_MPP(0, 0x0, 0, 1) + +void __init orion_mpp_conf(unsigned int *mpp_list, unsigned int variant_mask, + unsigned int mpp_max, unsigned int dev_bus); + +#endif diff --git a/arch/arm/plat-orion/mpp.c b/arch/arm/plat-orion/mpp.c new file mode 100644 index 000000000000..248c02205b66 --- /dev/null +++ b/arch/arm/plat-orion/mpp.c @@ -0,0 +1,81 @@ +/* + * arch/arm/plat-orion/mpp.c + * + * MPP functions for Marvell orion SoCs + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/mbus.h> +#include <linux/io.h> +#include <linux/gpio.h> +#include <mach/hardware.h> +#include <plat/mpp.h> + +/* Address of the ith MPP control register */ +static __init unsigned long mpp_ctrl_addr(unsigned int i, + unsigned long dev_bus) +{ + return dev_bus + (i) * 4; +} + + +void __init orion_mpp_conf(unsigned int *mpp_list, unsigned int variant_mask, + unsigned int mpp_max, unsigned int dev_bus) +{ + unsigned int mpp_nr_regs = (1 + mpp_max/8); + u32 mpp_ctrl[mpp_nr_regs]; + int i; + + if (!variant_mask) + return; + + printk(KERN_DEBUG "initial MPP regs:"); + for (i = 0; i < mpp_nr_regs; i++) { + mpp_ctrl[i] = readl(mpp_ctrl_addr(i, dev_bus)); + printk(" %08x", mpp_ctrl[i]); + } + printk("\n"); + + for ( ; *mpp_list; mpp_list++) { + unsigned int num = MPP_NUM(*mpp_list); + unsigned int sel = MPP_SEL(*mpp_list); + int shift, gpio_mode; + + if (num > mpp_max) { + printk(KERN_ERR "orion_mpp_conf: invalid MPP " + "number (%u)\n", num); + continue; + } + if (!(*mpp_list & variant_mask)) { + printk(KERN_WARNING + "orion_mpp_conf: requested MPP%u config " + "unavailable on this hardware\n", num); + continue; + } + + shift = (num & 7) << 2; + mpp_ctrl[num / 8] &= ~(0xf << shift); + mpp_ctrl[num / 8] |= sel << shift; + + gpio_mode = 0; + if (*mpp_list & MPP_INPUT_MASK) + gpio_mode |= GPIO_INPUT_OK; + if (*mpp_list & MPP_OUTPUT_MASK) + gpio_mode |= GPIO_OUTPUT_OK; + if (sel != 0) + gpio_mode = 0; + orion_gpio_set_valid(num, gpio_mode); + } + + printk(KERN_DEBUG " final MPP regs:"); + for (i = 0; i < mpp_nr_regs; i++) { + writel(mpp_ctrl[i], mpp_ctrl_addr(i, dev_bus)); + printk(" %08x", mpp_ctrl[i]); + } + printk("\n"); +} |