diff options
Diffstat (limited to 'drivers/media/video/cx18/cx18-irq.c')
| -rw-r--r-- | drivers/media/video/cx18/cx18-irq.c | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/drivers/media/video/cx18/cx18-irq.c b/drivers/media/video/cx18/cx18-irq.c deleted file mode 100644 index 80edfe93a3d8..000000000000 --- a/drivers/media/video/cx18/cx18-irq.c +++ /dev/null @@ -1,81 +0,0 @@ -/* - * cx18 interrupt handling - * - * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl> - * Copyright (C) 2008 Andy Walls <awalls@md.metrocast.net> - * - * 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 program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * 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., 59 Temple Place, Suite 330, Boston, MA - * 02111-1307 USA - */ - -#include "cx18-driver.h" -#include "cx18-io.h" -#include "cx18-irq.h" -#include "cx18-mailbox.h" -#include "cx18-scb.h" - -static void xpu_ack(struct cx18 *cx, u32 sw2) -{ - if (sw2 & IRQ_CPU_TO_EPU_ACK) - wake_up(&cx->mb_cpu_waitq); - if (sw2 & IRQ_APU_TO_EPU_ACK) - wake_up(&cx->mb_apu_waitq); -} - -static void epu_cmd(struct cx18 *cx, u32 sw1) -{ - if (sw1 & IRQ_CPU_TO_EPU) - cx18_api_epu_cmd_irq(cx, CPU); - if (sw1 & IRQ_APU_TO_EPU) - cx18_api_epu_cmd_irq(cx, APU); -} - -irqreturn_t cx18_irq_handler(int irq, void *dev_id) -{ - struct cx18 *cx = (struct cx18 *)dev_id; - u32 sw1, sw2, hw2; - - sw1 = cx18_read_reg(cx, SW1_INT_STATUS) & cx->sw1_irq_mask; - sw2 = cx18_read_reg(cx, SW2_INT_STATUS) & cx->sw2_irq_mask; - hw2 = cx18_read_reg(cx, HW2_INT_CLR_STATUS) & cx->hw2_irq_mask; - - if (sw1) - cx18_write_reg_expect(cx, sw1, SW1_INT_STATUS, ~sw1, sw1); - if (sw2) - cx18_write_reg_expect(cx, sw2, SW2_INT_STATUS, ~sw2, sw2); - if (hw2) - cx18_write_reg_expect(cx, hw2, HW2_INT_CLR_STATUS, ~hw2, hw2); - - if (sw1 || sw2 || hw2) - CX18_DEBUG_HI_IRQ("received interrupts " - "SW1: %x SW2: %x HW2: %x\n", sw1, sw2, hw2); - - /* - * SW1 responses have to happen first. The sending XPU times out the - * incoming mailboxes on us rather rapidly. - */ - if (sw1) - epu_cmd(cx, sw1); - - /* To do: interrupt-based I2C handling - if (hw2 & (HW2_I2C1_INT|HW2_I2C2_INT)) { - } - */ - - if (sw2) - xpu_ack(cx, sw2); - - return (sw1 || sw2 || hw2) ? IRQ_HANDLED : IRQ_NONE; -} |