cx18: new driver for the Conexant CX23418 MPEG encoder chip

From: Hans Verkuil <hverkuil@xs4all.nl>

Many thanks to Steve Toth from Hauppauge and Nattu Dakshinamurthy from
Conexant for their support. I am in particular thankful to Hauppauge
since without their help this driver would not exist. It should also
be noted that Steve did the work to get the DVB part up and running.
Thank you!

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Steven Toth <stoth@hauppauge.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: G. Andrew Walls <awalls@radix.net>

1 files changed, 121 insertions, 0 deletions

diff --git a/linux/drivers/media/video/cx18/cx18-scb.c b/linux/drivers/media/video/cx18/cx18-scb.c
new file mode 100644
index 000000000..30bc803e3
--- /dev/null
+++ b/linux/drivers/media/video/cx18/cx18-scb.c
@@ -0,0 +1,121 @@
+/*
+ *  cx18 System Control Block initialization
+ *
+ *  Copyright (C) 2007  Hans Verkuil <hverkuil@xs4all.nl>
+ *
+ *  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-scb.h"
+
+void cx18_init_scb(struct cx18 *cx)
+{
+	setup_page(SCB_OFFSET);
+	memset_io(cx->scb, 0, 0x10000);
+
+	writel(IRQ_APU_TO_CPU,     &cx->scb->apu2cpu_irq);
+	writel(IRQ_CPU_TO_APU_ACK, &cx->scb->cpu2apu_irq_ack);
+	writel(IRQ_HPU_TO_CPU,     &cx->scb->hpu2cpu_irq);
+	writel(IRQ_CPU_TO_HPU_ACK, &cx->scb->cpu2hpu_irq_ack);
+	writel(IRQ_PPU_TO_CPU,     &cx->scb->ppu2cpu_irq);
+	writel(IRQ_CPU_TO_PPU_ACK, &cx->scb->cpu2ppu_irq_ack);
+	writel(IRQ_EPU_TO_CPU,     &cx->scb->epu2cpu_irq);
+	writel(IRQ_CPU_TO_EPU_ACK, &cx->scb->cpu2epu_irq_ack);
+
+	writel(IRQ_CPU_TO_APU,     &cx->scb->cpu2apu_irq);
+	writel(IRQ_APU_TO_CPU_ACK, &cx->scb->apu2cpu_irq_ack);
+	writel(IRQ_HPU_TO_APU,     &cx->scb->hpu2apu_irq);
+	writel(IRQ_APU_TO_HPU_ACK, &cx->scb->apu2hpu_irq_ack);
+	writel(IRQ_PPU_TO_APU,     &cx->scb->ppu2apu_irq);
+	writel(IRQ_APU_TO_PPU_ACK, &cx->scb->apu2ppu_irq_ack);
+	writel(IRQ_EPU_TO_APU,     &cx->scb->epu2apu_irq);
+	writel(IRQ_APU_TO_EPU_ACK, &cx->scb->apu2epu_irq_ack);
+
+	writel(IRQ_CPU_TO_HPU,     &cx->scb->cpu2hpu_irq);
+	writel(IRQ_HPU_TO_CPU_ACK, &cx->scb->hpu2cpu_irq_ack);
+	writel(IRQ_APU_TO_HPU,     &cx->scb->apu2hpu_irq);
+	writel(IRQ_HPU_TO_APU_ACK, &cx->scb->hpu2apu_irq_ack);
+	writel(IRQ_PPU_TO_HPU,     &cx->scb->ppu2hpu_irq);
+	writel(IRQ_HPU_TO_PPU_ACK, &cx->scb->hpu2ppu_irq_ack);
+	writel(IRQ_EPU_TO_HPU,     &cx->scb->epu2hpu_irq);
+	writel(IRQ_HPU_TO_EPU_ACK, &cx->scb->hpu2epu_irq_ack);
+
+	writel(IRQ_CPU_TO_PPU,     &cx->scb->cpu2ppu_irq);
+	writel(IRQ_PPU_TO_CPU_ACK, &cx->scb->ppu2cpu_irq_ack);
+	writel(IRQ_APU_TO_PPU,     &cx->scb->apu2ppu_irq);
+	writel(IRQ_PPU_TO_APU_ACK, &cx->scb->ppu2apu_irq_ack);
+	writel(IRQ_HPU_TO_PPU,     &cx->scb->hpu2ppu_irq);
+	writel(IRQ_PPU_TO_HPU_ACK, &cx->scb->ppu2hpu_irq_ack);
+	writel(IRQ_EPU_TO_PPU,     &cx->scb->epu2ppu_irq);
+	writel(IRQ_PPU_TO_EPU_ACK, &cx->scb->ppu2epu_irq_ack);
+
+	writel(IRQ_CPU_TO_EPU,     &cx->scb->cpu2epu_irq);
+	writel(IRQ_EPU_TO_CPU_ACK, &cx->scb->epu2cpu_irq_ack);
+	writel(IRQ_APU_TO_EPU,     &cx->scb->apu2epu_irq);
+	writel(IRQ_EPU_TO_APU_ACK, &cx->scb->epu2apu_irq_ack);
+	writel(IRQ_HPU_TO_EPU,     &cx->scb->hpu2epu_irq);
+	writel(IRQ_EPU_TO_HPU_ACK, &cx->scb->epu2hpu_irq_ack);
+	writel(IRQ_PPU_TO_EPU,     &cx->scb->ppu2epu_irq);
+	writel(IRQ_EPU_TO_PPU_ACK, &cx->scb->epu2ppu_irq_ack);
+
+	writel(SCB_OFFSET + offsetof(struct cx18_scb, apu2cpu_mb),
+			&cx->scb->apu2cpu_mb_offset);
+	writel(SCB_OFFSET + offsetof(struct cx18_scb, hpu2cpu_mb),
+			&cx->scb->hpu2cpu_mb_offset);
+	writel(SCB_OFFSET + offsetof(struct cx18_scb, ppu2cpu_mb),
+			&cx->scb->ppu2cpu_mb_offset);
+	writel(SCB_OFFSET + offsetof(struct cx18_scb, epu2cpu_mb),
+			&cx->scb->epu2cpu_mb_offset);
+	writel(SCB_OFFSET + offsetof(struct cx18_scb, cpu2apu_mb),
+			&cx->scb->cpu2apu_mb_offset);
+	writel(SCB_OFFSET + offsetof(struct cx18_scb, hpu2apu_mb),
+			&cx->scb->hpu2apu_mb_offset);
+	writel(SCB_OFFSET + offsetof(struct cx18_scb, ppu2apu_mb),
+			&cx->scb->ppu2apu_mb_offset);
+	writel(SCB_OFFSET + offsetof(struct cx18_scb, epu2apu_mb),
+			&cx->scb->epu2apu_mb_offset);
+	writel(SCB_OFFSET + offsetof(struct cx18_scb, cpu2hpu_mb),
+			&cx->scb->cpu2hpu_mb_offset);
+	writel(SCB_OFFSET + offsetof(struct cx18_scb, apu2hpu_mb),
+			&cx->scb->apu2hpu_mb_offset);
+	writel(SCB_OFFSET + offsetof(struct cx18_scb, ppu2hpu_mb),
+			&cx->scb->ppu2hpu_mb_offset);
+	writel(SCB_OFFSET + offsetof(struct cx18_scb, epu2hpu_mb),
+			&cx->scb->epu2hpu_mb_offset);
+	writel(SCB_OFFSET + offsetof(struct cx18_scb, cpu2ppu_mb),
+			&cx->scb->cpu2ppu_mb_offset);
+	writel(SCB_OFFSET + offsetof(struct cx18_scb, apu2ppu_mb),
+			&cx->scb->apu2ppu_mb_offset);
+	writel(SCB_OFFSET + offsetof(struct cx18_scb, hpu2ppu_mb),
+			&cx->scb->hpu2ppu_mb_offset);
+	writel(SCB_OFFSET + offsetof(struct cx18_scb, epu2ppu_mb),
+			&cx->scb->epu2ppu_mb_offset);
+	writel(SCB_OFFSET + offsetof(struct cx18_scb, cpu2epu_mb),
+			&cx->scb->cpu2epu_mb_offset);
+	writel(SCB_OFFSET + offsetof(struct cx18_scb, apu2epu_mb),
+			&cx->scb->apu2epu_mb_offset);
+	writel(SCB_OFFSET + offsetof(struct cx18_scb, hpu2epu_mb),
+			&cx->scb->hpu2epu_mb_offset);
+	writel(SCB_OFFSET + offsetof(struct cx18_scb, ppu2epu_mb),
+			&cx->scb->ppu2epu_mb_offset);
+
+	writel(SCB_OFFSET + offsetof(struct cx18_scb, cpu_state),
+			&cx->scb->ipc_offset);
+
+	writel(1, &cx->scb->hpu_state);
+	writel(1, &cx->scb->epu_state);
+}