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Diffstat (limited to 'arch/arm/mach-iop32x/common.c')
| -rw-r--r-- | arch/arm/mach-iop32x/common.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/arch/arm/mach-iop32x/common.c b/arch/arm/mach-iop32x/common.c new file mode 100644 index 00000000000..8044af6a54e --- /dev/null +++ b/arch/arm/mach-iop32x/common.c @@ -0,0 +1,72 @@ +/* + * arch/arm/mach-iop32x/common.c + * + * Common routines shared across all IOP3xx implementations + * + * Author: Deepak Saxena <dsaxena@mvista.com> + * + * Copyright 2003 (c) MontaVista, Software, Inc. + * + * 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/delay.h> +#include <asm/hardware.h> + +/* + * Shared variables + */ +unsigned long iop3xx_pcibios_min_io = 0; +unsigned long iop3xx_pcibios_min_mem = 0; + +#ifdef CONFIG_ARCH_EP80219 +#include <linux/kernel.h> +/* + * Default power-off for EP80219 + */ + +static inline void ep80219_send_to_pic(__u8 c) { +} + +void ep80219_power_off(void) +{ + /* + * This function will send a SHUTDOWN_COMPLETE message to the PIC controller + * over I2C. We are not using the i2c subsystem since we are going to power + * off and it may be removed + */ + + /* Send the Address byte w/ the start condition */ + *IOP321_IDBR1 = 0x60; + *IOP321_ICR1 = 0xE9; + mdelay(1); + + /* Send the START_MSG byte w/ no start or stop condition */ + *IOP321_IDBR1 = 0x0F; + *IOP321_ICR1 = 0xE8; + mdelay(1); + + /* Send the SHUTDOWN_COMPLETE Message ID byte w/ no start or stop condition */ + *IOP321_IDBR1 = 0x03; + *IOP321_ICR1 = 0xE8; + mdelay(1); + + /* Send an ignored byte w/ stop condition */ + *IOP321_IDBR1 = 0x00; + *IOP321_ICR1 = 0xEA; + + while (1) ; +} + +#include <linux/init.h> +#include <linux/pm.h> + +static int __init ep80219_init(void) +{ + pm_power_off = ep80219_power_off; + return 0; +} +arch_initcall(ep80219_init); +#endif |