[PATCH] ppc64: very basic desktop g5 sound support
This patch hacks the current PowerMac Alsa driver to add some basic support
of analog sound output to some desktop G5s. It has severe limitations
though:
- Only 44100Khz 16 bits
- Only work on G5 models using a TAS3004 analog code, that is early
single CPU desktops and all dual CPU desktops at this date, but none
of the more recent ones like iMac G5.
- It does analog only, no digital/SPDIF support at all, no native
AC3 support
Better support would require a complete rewrite of the driver (which I am
working on, but don't hold your breath), to properly support the diversity
of apple sound HW setup, including dual codecs, several i2s busses, all the
new codecs used in the new machines, proper clock switching with digital,
etc etc etc...
This patch applies on top of the other PowerMac sound patches I posted in
the past couple of days (new powerbook support and sleep fixes).
Note: This is a FAQ entry for PowerMac sound support with TI codecs: They
have a feature called "DRC" which is automatically enabled for the internal
speaker (at least when auto mute control is enabled) which will cause your
sound to fade out to nothing after half a second of playback if you don't
set a proper "DRC Range" in the mixer. So if you have a problem like that,
check alsamixer and raise your DRC Range to something reasonable.
Note2: This patch will also add auto-mute of the speaker when line-out jack
is used on some earlier desktop G4s (and on the G5) in addition to the
headphone jack. If that behaviour isn't what you want, just disable
auto-muting and use the manual mute controls in alsamixer.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/sound/ppc/pmac.c b/sound/ppc/pmac.c
index f9a9601..3bf5f06 100644
--- a/sound/ppc/pmac.c
+++ b/sound/ppc/pmac.c
@@ -27,14 +27,13 @@
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
#include <sound/core.h>
#include "pmac.h"
#include <sound/pcm_params.h>
-#ifdef CONFIG_PPC_HAS_FEATURE_CALLS
#include <asm/pmac_feature.h>
-#else
-#include <asm/feature.h>
-#endif
+#include <asm/pci-bridge.h>
#if defined(CONFIG_PM) && defined(CONFIG_PMAC_PBOOK)
@@ -57,22 +56,29 @@
/*
* allocate DBDMA command arrays
*/
-static int snd_pmac_dbdma_alloc(pmac_dbdma_t *rec, int size)
+static int snd_pmac_dbdma_alloc(pmac_t *chip, pmac_dbdma_t *rec, int size)
{
- rec->space = kmalloc(sizeof(struct dbdma_cmd) * (size + 1), GFP_KERNEL);
+ unsigned int rsize = sizeof(struct dbdma_cmd) * (size + 1);
+
+ rec->space = dma_alloc_coherent(&chip->pdev->dev, rsize,
+ &rec->dma_base, GFP_KERNEL);
if (rec->space == NULL)
return -ENOMEM;
rec->size = size;
- memset(rec->space, 0, sizeof(struct dbdma_cmd) * (size + 1));
+ memset(rec->space, 0, rsize);
rec->cmds = (void __iomem *)DBDMA_ALIGN(rec->space);
- rec->addr = virt_to_bus(rec->cmds);
+ rec->addr = rec->dma_base + (unsigned long)((char *)rec->cmds - (char *)rec->space);
+
return 0;
}
-static void snd_pmac_dbdma_free(pmac_dbdma_t *rec)
+static void snd_pmac_dbdma_free(pmac_t *chip, pmac_dbdma_t *rec)
{
- if (rec)
- kfree(rec->space);
+ if (rec) {
+ unsigned int rsize = sizeof(struct dbdma_cmd) * (rec->size + 1);
+
+ dma_free_coherent(&chip->pdev->dev, rsize, rec->space, rec->dma_base);
+ }
}
@@ -237,7 +243,7 @@
/* continuous DMA memory type doesn't provide the physical address,
* so we need to resolve the address here...
*/
- offset = virt_to_bus(runtime->dma_area);
+ offset = runtime->dma_addr;
for (i = 0, cp = rec->cmd.cmds; i < rec->nperiods; i++, cp++) {
st_le32(&cp->phy_addr, offset);
st_le16(&cp->req_count, rec->period_size);
@@ -664,8 +670,8 @@
chip->capture.cur_freqs = chip->freqs_ok;
/* preallocate 64k buffer */
- snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS,
- snd_dma_continuous_data(GFP_KERNEL),
+ snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
+ &chip->pdev->dev,
64 * 1024, 64 * 1024);
return 0;
@@ -757,28 +763,10 @@
/*
* a wrapper to feature call for compatibility
*/
-#if defined(CONFIG_PM) && defined(CONFIG_PMAC_PBOOK)
static void snd_pmac_sound_feature(pmac_t *chip, int enable)
{
-#ifdef CONFIG_PPC_HAS_FEATURE_CALLS
ppc_md.feature_call(PMAC_FTR_SOUND_CHIP_ENABLE, chip->node, 0, enable);
-#else
- if (chip->is_pbook_G3) {
- pmu_suspend();
- feature_clear(chip->node, FEATURE_Sound_power);
- feature_clear(chip->node, FEATURE_Sound_CLK_enable);
- big_mdelay(1000); /* XXX */
- pmu_resume();
- }
- if (chip->is_pbook_3400) {
- feature_set(chip->node, FEATURE_IOBUS_enable);
- udelay(10);
- }
-#endif
}
-#else /* CONFIG_PM && CONFIG_PMAC_PBOOK */
-#define snd_pmac_sound_feature(chip,enable) /**/
-#endif /* CONFIG_PM && CONFIG_PMAC_PBOOK */
/*
* release resources
@@ -786,8 +774,6 @@
static int snd_pmac_free(pmac_t *chip)
{
- int i;
-
/* stop sounds */
if (chip->initialized) {
snd_pmac_dbdma_reset(chip);
@@ -813,9 +799,9 @@
free_irq(chip->tx_irq, (void*)chip);
if (chip->rx_irq >= 0)
free_irq(chip->rx_irq, (void*)chip);
- snd_pmac_dbdma_free(&chip->playback.cmd);
- snd_pmac_dbdma_free(&chip->capture.cmd);
- snd_pmac_dbdma_free(&chip->extra_dma);
+ snd_pmac_dbdma_free(chip, &chip->playback.cmd);
+ snd_pmac_dbdma_free(chip, &chip->capture.cmd);
+ snd_pmac_dbdma_free(chip, &chip->extra_dma);
if (chip->macio_base)
iounmap(chip->macio_base);
if (chip->latch_base)
@@ -826,12 +812,23 @@
iounmap(chip->playback.dma);
if (chip->capture.dma)
iounmap(chip->capture.dma);
+#ifndef CONFIG_PPC64
if (chip->node) {
+ int i;
+
for (i = 0; i < 3; i++) {
- if (chip->of_requested & (1 << i))
- release_OF_resource(chip->node, i);
+ if (chip->of_requested & (1 << i)) {
+ if (chip->is_k2)
+ release_OF_resource(chip->node->parent,
+ i);
+ else
+ release_OF_resource(chip->node, i);
+ }
}
}
+#endif /* CONFIG_PPC64 */
+ if (chip->pdev)
+ pci_dev_put(chip->pdev);
kfree(chip);
return 0;
}
@@ -881,6 +878,8 @@
{
struct device_node *sound;
unsigned int *prop, l;
+ struct macio_chip* macio;
+
u32 layout_id = 0;
if (_machine != _MACH_Pmac)
@@ -918,10 +917,17 @@
* if we didn't find a davbus device, try 'i2s-a' since
* this seems to be what iBooks have
*/
- if (! chip->node)
+ if (! chip->node) {
chip->node = find_devices("i2s-a");
+ if (chip->node && chip->node->parent && chip->node->parent->parent) {
+ if (device_is_compatible(chip->node->parent->parent,
+ "K2-Keylargo"))
+ chip->is_k2 = 1;
+ }
+ }
if (! chip->node)
return -ENODEV;
+
sound = find_devices("sound");
while (sound && sound->parent != chip->node)
sound = sound->next;
@@ -966,7 +972,8 @@
chip->control_mask = MASK_IEPC | 0x11; /* disable IEE */
}
if (device_is_compatible(sound, "AOAKeylargo") ||
- device_is_compatible(sound, "AOAbase")) {
+ device_is_compatible(sound, "AOAbase") ||
+ device_is_compatible(sound, "AOAK2")) {
/* For now, only support very basic TAS3004 based machines with
* single frequency until proper i2s control is implemented
*/
@@ -975,6 +982,7 @@
case 0x46:
case 0x33:
case 0x29:
+ case 0x24:
chip->num_freqs = ARRAY_SIZE(tumbler_freqs);
chip->model = PMAC_SNAPPER;
chip->can_byte_swap = 0; /* FIXME: check this */
@@ -987,6 +995,26 @@
chip->device_id = *prop;
chip->has_iic = (find_devices("perch") != NULL);
+ /* We need the PCI device for DMA allocations, let's use a crude method
+ * for now ...
+ */
+ macio = macio_find(chip->node, macio_unknown);
+ if (macio == NULL)
+ printk(KERN_WARNING "snd-powermac: can't locate macio !\n");
+ else {
+ struct pci_dev *pdev = NULL;
+
+ for_each_pci_dev(pdev) {
+ struct device_node *np = pci_device_to_OF_node(pdev);
+ if (np && np == macio->of_node) {
+ chip->pdev = pdev;
+ break;
+ }
+ }
+ }
+ if (chip->pdev == NULL)
+ printk(KERN_WARNING "snd-powermac: can't locate macio PCI device !\n");
+
detect_byte_swap(chip);
/* look for a property saying what sample rates
@@ -1091,8 +1119,10 @@
int err;
chip->auto_mute = 1;
err = snd_ctl_add(chip->card, snd_ctl_new1(&auto_mute_controls[0], chip));
- if (err < 0)
+ if (err < 0) {
+ printk(KERN_ERR "snd-powermac: Failed to add automute control\n");
return err;
+ }
chip->hp_detect_ctl = snd_ctl_new1(&auto_mute_controls[1], chip);
return snd_ctl_add(chip->card, chip->hp_detect_ctl);
}
@@ -1106,6 +1136,7 @@
pmac_t *chip;
struct device_node *np;
int i, err;
+ unsigned long ctrl_addr, txdma_addr, rxdma_addr;
static snd_device_ops_t ops = {
.dev_free = snd_pmac_dev_free,
};
@@ -1127,32 +1158,59 @@
if ((err = snd_pmac_detect(chip)) < 0)
goto __error;
- if (snd_pmac_dbdma_alloc(&chip->playback.cmd, PMAC_MAX_FRAGS + 1) < 0 ||
- snd_pmac_dbdma_alloc(&chip->capture.cmd, PMAC_MAX_FRAGS + 1) < 0 ||
- snd_pmac_dbdma_alloc(&chip->extra_dma, 2) < 0) {
+ if (snd_pmac_dbdma_alloc(chip, &chip->playback.cmd, PMAC_MAX_FRAGS + 1) < 0 ||
+ snd_pmac_dbdma_alloc(chip, &chip->capture.cmd, PMAC_MAX_FRAGS + 1) < 0 ||
+ snd_pmac_dbdma_alloc(chip, &chip->extra_dma, 2) < 0) {
err = -ENOMEM;
goto __error;
}
np = chip->node;
- if (np->n_addrs < 3 || np->n_intrs < 3) {
- err = -ENODEV;
- goto __error;
- }
-
- for (i = 0; i < 3; i++) {
- static char *name[3] = { NULL, "- Tx DMA", "- Rx DMA" };
- if (! request_OF_resource(np, i, name[i])) {
- snd_printk(KERN_ERR "pmac: can't request resource %d!\n", i);
+ if (chip->is_k2) {
+ if (np->parent->n_addrs < 2 || np->n_intrs < 3) {
err = -ENODEV;
goto __error;
}
- chip->of_requested |= (1 << i);
+ for (i = 0; i < 2; i++) {
+#ifndef CONFIG_PPC64
+ static char *name[2] = { "- Control", "- DMA" };
+ if (! request_OF_resource(np->parent, i, name[i])) {
+ snd_printk(KERN_ERR "pmac: can't request resource %d!\n", i);
+ err = -ENODEV;
+ goto __error;
+ }
+ chip->of_requested |= (1 << i);
+#endif /* CONFIG_PPC64 */
+ ctrl_addr = np->parent->addrs[0].address;
+ txdma_addr = np->parent->addrs[1].address;
+ rxdma_addr = txdma_addr + 0x100;
+ }
+
+ } else {
+ if (np->n_addrs < 3 || np->n_intrs < 3) {
+ err = -ENODEV;
+ goto __error;
+ }
+
+ for (i = 0; i < 3; i++) {
+#ifndef CONFIG_PPC64
+ static char *name[3] = { "- Control", "- Tx DMA", "- Rx DMA" };
+ if (! request_OF_resource(np, i, name[i])) {
+ snd_printk(KERN_ERR "pmac: can't request resource %d!\n", i);
+ err = -ENODEV;
+ goto __error;
+ }
+ chip->of_requested |= (1 << i);
+#endif /* CONFIG_PPC64 */
+ ctrl_addr = np->addrs[0].address;
+ txdma_addr = np->addrs[1].address;
+ rxdma_addr = np->addrs[2].address;
+ }
}
- chip->awacs = ioremap(np->addrs[0].address, 0x1000);
- chip->playback.dma = ioremap(np->addrs[1].address, 0x100);
- chip->capture.dma = ioremap(np->addrs[2].address, 0x100);
+ chip->awacs = ioremap(ctrl_addr, 0x1000);
+ chip->playback.dma = ioremap(txdma_addr, 0x100);
+ chip->capture.dma = ioremap(rxdma_addr, 0x100);
if (chip->model <= PMAC_BURGUNDY) {
if (request_irq(np->intrs[0].line, snd_pmac_ctrl_intr, 0,
"PMac", (void*)chip)) {
@@ -1180,7 +1238,8 @@
snd_pmac_sound_feature(chip, 1);
/* reset */
- out_le32(&chip->awacs->control, 0x11);
+ if (chip->model == PMAC_AWACS)
+ out_le32(&chip->awacs->control, 0x11);
/* Powerbooks have odd ways of enabling inputs such as
an expansion-bay CD or sound from an internal modem
@@ -1232,6 +1291,8 @@
return 0;
__error:
+ if (chip->pdev)
+ pci_dev_put(chip->pdev);
snd_pmac_free(chip);
return err;
}