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Diffstat (limited to 'arch/mips/pmcs-msp71xx/msp_hwbutton.c')
-rw-r--r--arch/mips/pmcs-msp71xx/msp_hwbutton.c165
1 files changed, 0 insertions, 165 deletions
diff --git a/arch/mips/pmcs-msp71xx/msp_hwbutton.c b/arch/mips/pmcs-msp71xx/msp_hwbutton.c
deleted file mode 100644
index bb57ed9ea2bd..000000000000
--- a/arch/mips/pmcs-msp71xx/msp_hwbutton.c
+++ /dev/null
@@ -1,165 +0,0 @@
-/*
- * Sets up interrupt handlers for various hardware switches which are
- * connected to interrupt lines.
- *
- * Copyright 2005-2207 PMC-Sierra, Inc.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
- * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-
-#include <msp_int.h>
-#include <msp_regs.h>
-#include <msp_regops.h>
-
-/* For hwbutton_interrupt->initial_state */
-#define HWBUTTON_HI 0x1
-#define HWBUTTON_LO 0x2
-
-/*
- * This struct describes a hardware button
- */
-struct hwbutton_interrupt {
- char *name; /* Name of button */
- int irq; /* Actual LINUX IRQ */
- int eirq; /* Extended IRQ number (0-7) */
- int initial_state; /* The "normal" state of the switch */
- void (*handle_hi)(void *); /* Handler: switch input has gone HI */
- void (*handle_lo)(void *); /* Handler: switch input has gone LO */
- void *data; /* Optional data to pass to handler */
-};
-
-#ifdef CONFIG_PMC_MSP7120_GW
-extern void msp_restart(char *);
-
-static void softreset_push(void *data)
-{
- printk(KERN_WARNING "SOFTRESET switch was pushed\n");
-
- /*
- * In the future you could move this to the release handler,
- * timing the difference between the 'push' and 'release', and only
- * doing this ungraceful restart if the button has been down for
- * a certain amount of time; otherwise doing a graceful restart.
- */
-
- msp_restart(NULL);
-}
-
-static void softreset_release(void *data)
-{
- printk(KERN_WARNING "SOFTRESET switch was released\n");
-
- /* Do nothing */
-}
-
-static void standby_on(void *data)
-{
- printk(KERN_WARNING "STANDBY switch was set to ON (not implemented)\n");
-
- /* TODO: Put board in standby mode */
-}
-
-static void standby_off(void *data)
-{
- printk(KERN_WARNING
- "STANDBY switch was set to OFF (not implemented)\n");
-
- /* TODO: Take out of standby mode */
-}
-
-static struct hwbutton_interrupt softreset_sw = {
- .name = "Softreset button",
- .irq = MSP_INT_EXT0,
- .eirq = 0,
- .initial_state = HWBUTTON_HI,
- .handle_hi = softreset_release,
- .handle_lo = softreset_push,
- .data = NULL,
-};
-
-static struct hwbutton_interrupt standby_sw = {
- .name = "Standby switch",
- .irq = MSP_INT_EXT1,
- .eirq = 1,
- .initial_state = HWBUTTON_HI,
- .handle_hi = standby_off,
- .handle_lo = standby_on,
- .data = NULL,
-};
-#endif /* CONFIG_PMC_MSP7120_GW */
-
-static irqreturn_t hwbutton_handler(int irq, void *data)
-{
- struct hwbutton_interrupt *hirq = data;
- unsigned long cic_ext = *CIC_EXT_CFG_REG;
-
- if (CIC_EXT_IS_ACTIVE_HI(cic_ext, hirq->eirq)) {
- /* Interrupt: pin is now HI */
- CIC_EXT_SET_ACTIVE_LO(cic_ext, hirq->eirq);
- hirq->handle_hi(hirq->data);
- } else {
- /* Interrupt: pin is now LO */
- CIC_EXT_SET_ACTIVE_HI(cic_ext, hirq->eirq);
- hirq->handle_lo(hirq->data);
- }
-
- /*
- * Invert the POLARITY of this level interrupt to ack the interrupt
- * Thus next state change will invoke the opposite message
- */
- *CIC_EXT_CFG_REG = cic_ext;
-
- return IRQ_HANDLED;
-}
-
-static int msp_hwbutton_register(struct hwbutton_interrupt *hirq)
-{
- unsigned long cic_ext;
-
- if (hirq->handle_hi == NULL || hirq->handle_lo == NULL)
- return -EINVAL;
-
- cic_ext = *CIC_EXT_CFG_REG;
- CIC_EXT_SET_TRIGGER_LEVEL(cic_ext, hirq->eirq);
- if (hirq->initial_state == HWBUTTON_HI)
- CIC_EXT_SET_ACTIVE_LO(cic_ext, hirq->eirq);
- else
- CIC_EXT_SET_ACTIVE_HI(cic_ext, hirq->eirq);
- *CIC_EXT_CFG_REG = cic_ext;
-
- return request_irq(hirq->irq, hwbutton_handler, 0,
- hirq->name, hirq);
-}
-
-static int __init msp_hwbutton_setup(void)
-{
-#ifdef CONFIG_PMC_MSP7120_GW
- msp_hwbutton_register(&softreset_sw);
- msp_hwbutton_register(&standby_sw);
-#endif
- return 0;
-}
-
-subsys_initcall(msp_hwbutton_setup);