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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
* cx18 interrupt handling
*
* Copyright ( C ) 2007 Hans Verkuil < hverkuil @ xs4all . nl >
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* Copyright ( C ) 2008 Andy Walls < awalls @ md . metrocast . net >
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*/
# include "cx18-driver.h"
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# include "cx18-io.h"
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# include "cx18-irq.h"
# include "cx18-mailbox.h"
# include "cx18-scb.h"
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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 ) ;
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}
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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 ) ;
}
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irqreturn_t cx18_irq_handler ( int irq , void * dev_id )
{
struct cx18 * cx = ( struct cx18 * ) dev_id ;
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u32 sw1 , sw2 , hw2 ;
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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 ;
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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 ) ;
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if ( sw1 | | sw2 | | hw2 )
[media] cx18: don't break long lines
Due to the 80-cols restrictions, and latter due to checkpatch
warnings, several strings were broken into multiple lines. This
is not considered a good practice anymore, as it makes harder
to grep for strings at the source code.
As we're right now fixing other drivers due to KERN_CONT, we need
to be able to identify what printk strings don't end with a "\n".
It is a way easier to detect those if we don't break long lines.
So, join those continuation lines.
The patch was generated via the script below, and manually
adjusted if needed.
</script>
use Text::Tabs;
while (<>) {
if ($next ne "") {
$c=$_;
if ($c =~ /^\s+\"(.*)/) {
$c2=$1;
$next =~ s/\"\n$//;
$n = expand($next);
$funpos = index($n, '(');
$pos = index($c2, '",');
if ($funpos && $pos > 0) {
$s1 = substr $c2, 0, $pos + 2;
$s2 = ' ' x ($funpos + 1) . substr $c2, $pos + 2;
$s2 =~ s/^\s+//;
$s2 = ' ' x ($funpos + 1) . $s2 if ($s2 ne "");
print unexpand("$next$s1\n");
print unexpand("$s2\n") if ($s2 ne "");
} else {
print "$next$c2\n";
}
$next="";
next;
} else {
print $next;
}
$next="";
} else {
if (m/\"$/) {
if (!m/\\n\"$/) {
$next=$_;
next;
}
}
}
print $_;
}
</script>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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CX18_DEBUG_HI_IRQ ( " received interrupts SW1: %x SW2: %x HW2: %x \n " ,
sw1 , sw2 , hw2 ) ;
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/*
* SW1 responses have to happen first . The sending XPU times out the
* incoming mailboxes on us rather rapidly .
*/
if ( sw1 )
epu_cmd ( cx , sw1 ) ;
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/* To do: interrupt-based I2C handling
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if ( hw2 & ( HW2_I2C1_INT | HW2_I2C2_INT ) ) {
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}
*/
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if ( sw2 )
xpu_ack ( cx , sw2 ) ;
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return ( sw1 | | sw2 | | hw2 ) ? IRQ_HANDLED : IRQ_NONE ;
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}
