mirror of
https://github.com/torvalds/linux.git
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d6376f0e64
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>
171 lines
4.2 KiB
C
171 lines
4.2 KiB
C
/*
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* Linux driver for digital TV devices equipped with B2C2 FlexcopII(b)/III
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* flexcop-dma.c - configuring and controlling the DMA of the FlexCop
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* see flexcop.c for copyright information
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*/
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#include "flexcop.h"
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int flexcop_dma_allocate(struct pci_dev *pdev,
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struct flexcop_dma *dma, u32 size)
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{
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u8 *tcpu;
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dma_addr_t tdma = 0;
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if (size % 2) {
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err("dma buffersize has to be even.");
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return -EINVAL;
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}
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if ((tcpu = pci_alloc_consistent(pdev, size, &tdma)) != NULL) {
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dma->pdev = pdev;
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dma->cpu_addr0 = tcpu;
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dma->dma_addr0 = tdma;
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dma->cpu_addr1 = tcpu + size/2;
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dma->dma_addr1 = tdma + size/2;
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dma->size = size/2;
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return 0;
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}
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return -ENOMEM;
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}
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EXPORT_SYMBOL(flexcop_dma_allocate);
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void flexcop_dma_free(struct flexcop_dma *dma)
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{
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pci_free_consistent(dma->pdev, dma->size*2,
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dma->cpu_addr0, dma->dma_addr0);
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memset(dma,0,sizeof(struct flexcop_dma));
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}
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EXPORT_SYMBOL(flexcop_dma_free);
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int flexcop_dma_config(struct flexcop_device *fc,
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struct flexcop_dma *dma,
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flexcop_dma_index_t dma_idx)
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{
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flexcop_ibi_value v0x0,v0x4,v0xc;
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v0x0.raw = v0x4.raw = v0xc.raw = 0;
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v0x0.dma_0x0.dma_address0 = dma->dma_addr0 >> 2;
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v0xc.dma_0xc.dma_address1 = dma->dma_addr1 >> 2;
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v0x4.dma_0x4_write.dma_addr_size = dma->size / 4;
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if ((dma_idx & FC_DMA_1) == dma_idx) {
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fc->write_ibi_reg(fc,dma1_000,v0x0);
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fc->write_ibi_reg(fc,dma1_004,v0x4);
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fc->write_ibi_reg(fc,dma1_00c,v0xc);
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} else if ((dma_idx & FC_DMA_2) == dma_idx) {
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fc->write_ibi_reg(fc,dma2_010,v0x0);
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fc->write_ibi_reg(fc,dma2_014,v0x4);
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fc->write_ibi_reg(fc,dma2_01c,v0xc);
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} else {
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err("either DMA1 or DMA2 can be configured within one flexcop_dma_config call.");
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return -EINVAL;
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}
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return 0;
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}
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EXPORT_SYMBOL(flexcop_dma_config);
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/* start the DMA transfers, but not the DMA IRQs */
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int flexcop_dma_xfer_control(struct flexcop_device *fc,
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flexcop_dma_index_t dma_idx,
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flexcop_dma_addr_index_t index,
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int onoff)
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{
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flexcop_ibi_value v0x0,v0xc;
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flexcop_ibi_register r0x0,r0xc;
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if ((dma_idx & FC_DMA_1) == dma_idx) {
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r0x0 = dma1_000;
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r0xc = dma1_00c;
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} else if ((dma_idx & FC_DMA_2) == dma_idx) {
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r0x0 = dma2_010;
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r0xc = dma2_01c;
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} else {
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err("either transfer DMA1 or DMA2 can be started within one flexcop_dma_xfer_control call.");
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return -EINVAL;
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}
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v0x0 = fc->read_ibi_reg(fc,r0x0);
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v0xc = fc->read_ibi_reg(fc,r0xc);
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deb_rdump("reg: %03x: %x\n",r0x0,v0x0.raw);
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deb_rdump("reg: %03x: %x\n",r0xc,v0xc.raw);
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if (index & FC_DMA_SUBADDR_0)
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v0x0.dma_0x0.dma_0start = onoff;
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if (index & FC_DMA_SUBADDR_1)
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v0xc.dma_0xc.dma_1start = onoff;
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fc->write_ibi_reg(fc,r0x0,v0x0);
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fc->write_ibi_reg(fc,r0xc,v0xc);
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deb_rdump("reg: %03x: %x\n",r0x0,v0x0.raw);
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deb_rdump("reg: %03x: %x\n",r0xc,v0xc.raw);
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return 0;
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}
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EXPORT_SYMBOL(flexcop_dma_xfer_control);
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static int flexcop_dma_remap(struct flexcop_device *fc,
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flexcop_dma_index_t dma_idx,
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int onoff)
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{
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flexcop_ibi_register r = (dma_idx & FC_DMA_1) ? dma1_00c : dma2_01c;
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flexcop_ibi_value v = fc->read_ibi_reg(fc,r);
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deb_info("%s\n",__func__);
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v.dma_0xc.remap_enable = onoff;
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fc->write_ibi_reg(fc,r,v);
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return 0;
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}
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int flexcop_dma_control_size_irq(struct flexcop_device *fc,
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flexcop_dma_index_t no,
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int onoff)
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{
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flexcop_ibi_value v = fc->read_ibi_reg(fc,ctrl_208);
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if (no & FC_DMA_1)
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v.ctrl_208.DMA1_IRQ_Enable_sig = onoff;
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if (no & FC_DMA_2)
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v.ctrl_208.DMA2_IRQ_Enable_sig = onoff;
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fc->write_ibi_reg(fc,ctrl_208,v);
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return 0;
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}
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EXPORT_SYMBOL(flexcop_dma_control_size_irq);
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int flexcop_dma_control_timer_irq(struct flexcop_device *fc,
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flexcop_dma_index_t no,
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int onoff)
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{
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flexcop_ibi_value v = fc->read_ibi_reg(fc,ctrl_208);
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if (no & FC_DMA_1)
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v.ctrl_208.DMA1_Timer_Enable_sig = onoff;
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if (no & FC_DMA_2)
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v.ctrl_208.DMA2_Timer_Enable_sig = onoff;
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fc->write_ibi_reg(fc,ctrl_208,v);
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return 0;
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}
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EXPORT_SYMBOL(flexcop_dma_control_timer_irq);
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/* 1 cycles = 1.97 msec */
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int flexcop_dma_config_timer(struct flexcop_device *fc,
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flexcop_dma_index_t dma_idx, u8 cycles)
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{
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flexcop_ibi_register r = (dma_idx & FC_DMA_1) ? dma1_004 : dma2_014;
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flexcop_ibi_value v = fc->read_ibi_reg(fc,r);
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flexcop_dma_remap(fc,dma_idx,0);
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deb_info("%s\n",__func__);
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v.dma_0x4_write.dmatimer = cycles;
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fc->write_ibi_reg(fc,r,v);
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return 0;
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}
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EXPORT_SYMBOL(flexcop_dma_config_timer);
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