Revision e2f455927b42767ecea5a4eb9bb740686e74c18b authored by Mark Brown on 27 February 2014, 11:26:07 UTC, committed by Mark Brown on 27 February 2014, 11:26:07 UTC
ASoC: Fixes for v3.14 A few fixes, all driver speccific ones. The DaVinci ones aren't as clear as they should be from the subject lines on the commits but they fix issues which will prevent correct operation in some use cases and only affect that particular driver so are reasonably safe. # gpg: Signature made Wed 19 Feb 2014 13:23:13 KST using RSA key ID 7EA229BD # gpg: Good signature from "Mark Brown <broonie@sirena.org.uk>" # gpg: aka "Mark Brown <broonie@debian.org>" # gpg: aka "Mark Brown <broonie@kernel.org>" # gpg: aka "Mark Brown <broonie@tardis.ed.ac.uk>" # gpg: aka "Mark Brown <broonie@linaro.org>" # gpg: aka "Mark Brown <Mark.Brown@linaro.org>"
tc.c
/*
* TURBOchannel bus services.
*
* Copyright (c) Harald Koerfgen, 1998
* Copyright (c) 2001, 2003, 2005, 2006 Maciej W. Rozycki
* Copyright (c) 2005 James Simmons
*
* This file is subject to the terms and conditions of the GNU
* General Public License. See the file "COPYING" in the main
* directory of this archive for more details.
*/
#include <linux/compiler.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/tc.h>
#include <linux/types.h>
#include <asm/io.h>
static struct tc_bus tc_bus = {
.name = "TURBOchannel",
};
/*
* Probing for TURBOchannel modules.
*/
static void __init tc_bus_add_devices(struct tc_bus *tbus)
{
resource_size_t slotsize = tbus->info.slot_size << 20;
resource_size_t extslotsize = tbus->ext_slot_size;
resource_size_t slotaddr;
resource_size_t extslotaddr;
resource_size_t devsize;
void __iomem *module;
struct tc_dev *tdev;
int i, slot, err;
u8 pattern[4];
long offset;
for (slot = 0; slot < tbus->num_tcslots; slot++) {
slotaddr = tbus->slot_base + slot * slotsize;
extslotaddr = tbus->ext_slot_base + slot * extslotsize;
module = ioremap_nocache(slotaddr, slotsize);
BUG_ON(!module);
offset = TC_OLDCARD;
err = 0;
err |= tc_preadb(pattern + 0, module + offset + TC_PATTERN0);
err |= tc_preadb(pattern + 1, module + offset + TC_PATTERN1);
err |= tc_preadb(pattern + 2, module + offset + TC_PATTERN2);
err |= tc_preadb(pattern + 3, module + offset + TC_PATTERN3);
if (err)
goto out_err;
if (pattern[0] != 0x55 || pattern[1] != 0x00 ||
pattern[2] != 0xaa || pattern[3] != 0xff) {
offset = TC_NEWCARD;
err = 0;
err |= tc_preadb(pattern + 0,
module + offset + TC_PATTERN0);
err |= tc_preadb(pattern + 1,
module + offset + TC_PATTERN1);
err |= tc_preadb(pattern + 2,
module + offset + TC_PATTERN2);
err |= tc_preadb(pattern + 3,
module + offset + TC_PATTERN3);
if (err)
goto out_err;
}
if (pattern[0] != 0x55 || pattern[1] != 0x00 ||
pattern[2] != 0xaa || pattern[3] != 0xff)
goto out_err;
/* Found a board, allocate it an entry in the list */
tdev = kzalloc(sizeof(*tdev), GFP_KERNEL);
if (!tdev) {
printk(KERN_ERR "tc%x: unable to allocate tc_dev\n",
slot);
goto out_err;
}
dev_set_name(&tdev->dev, "tc%x", slot);
tdev->bus = tbus;
tdev->dev.parent = &tbus->dev;
tdev->dev.bus = &tc_bus_type;
tdev->slot = slot;
for (i = 0; i < 8; i++) {
tdev->firmware[i] =
readb(module + offset + TC_FIRM_VER + 4 * i);
tdev->vendor[i] =
readb(module + offset + TC_VENDOR + 4 * i);
tdev->name[i] =
readb(module + offset + TC_MODULE + 4 * i);
}
tdev->firmware[8] = 0;
tdev->vendor[8] = 0;
tdev->name[8] = 0;
pr_info("%s: %s %s %s\n", dev_name(&tdev->dev), tdev->vendor,
tdev->name, tdev->firmware);
devsize = readb(module + offset + TC_SLOT_SIZE);
devsize <<= 22;
if (devsize <= slotsize) {
tdev->resource.start = slotaddr;
tdev->resource.end = slotaddr + devsize - 1;
} else if (devsize <= extslotsize) {
tdev->resource.start = extslotaddr;
tdev->resource.end = extslotaddr + devsize - 1;
} else {
printk(KERN_ERR "%s: Cannot provide slot space "
"(%dMiB required, up to %dMiB supported)\n",
dev_name(&tdev->dev), devsize >> 20,
max(slotsize, extslotsize) >> 20);
kfree(tdev);
goto out_err;
}
tdev->resource.name = tdev->name;
tdev->resource.flags = IORESOURCE_MEM;
tc_device_get_irq(tdev);
device_register(&tdev->dev);
list_add_tail(&tdev->node, &tbus->devices);
out_err:
iounmap(module);
}
}
/*
* The main entry.
*/
static int __init tc_init(void)
{
/* Initialize the TURBOchannel bus */
if (tc_bus_get_info(&tc_bus))
return 0;
INIT_LIST_HEAD(&tc_bus.devices);
dev_set_name(&tc_bus.dev, "tc");
device_register(&tc_bus.dev);
if (tc_bus.info.slot_size) {
unsigned int tc_clock = tc_get_speed(&tc_bus) / 100000;
pr_info("tc: TURBOchannel rev. %d at %d.%d MHz "
"(with%s parity)\n", tc_bus.info.revision,
tc_clock / 10, tc_clock % 10,
tc_bus.info.parity ? "" : "out");
tc_bus.resource[0].start = tc_bus.slot_base;
tc_bus.resource[0].end = tc_bus.slot_base +
(tc_bus.info.slot_size << 20) *
tc_bus.num_tcslots - 1;
tc_bus.resource[0].name = tc_bus.name;
tc_bus.resource[0].flags = IORESOURCE_MEM;
if (request_resource(&iomem_resource,
&tc_bus.resource[0]) < 0) {
printk(KERN_ERR "tc: Cannot reserve resource\n");
return 0;
}
if (tc_bus.ext_slot_size) {
tc_bus.resource[1].start = tc_bus.ext_slot_base;
tc_bus.resource[1].end = tc_bus.ext_slot_base +
tc_bus.ext_slot_size *
tc_bus.num_tcslots - 1;
tc_bus.resource[1].name = tc_bus.name;
tc_bus.resource[1].flags = IORESOURCE_MEM;
if (request_resource(&iomem_resource,
&tc_bus.resource[1]) < 0) {
printk(KERN_ERR
"tc: Cannot reserve resource\n");
release_resource(&tc_bus.resource[0]);
return 0;
}
}
tc_bus_add_devices(&tc_bus);
}
return 0;
}
subsys_initcall(tc_init);
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