[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/beep.c b/sound/ppc/beep.c
index c23f601..31ea7a4 100644
--- a/sound/ppc/beep.c
+++ b/sound/ppc/beep.c
@@ -24,6 +24,8 @@
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/input.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
 #include <sound/core.h>
 #include <sound/control.h>
 #include "pmac.h"
@@ -35,7 +37,7 @@
 	int hz;
 	int nsamples;
 	short *buf;		/* allocated wave buffer */
-	unsigned long addr;	/* physical address of buffer */
+	dma_addr_t addr;	/* physical address of buffer */
 	struct input_dev dev;
 };
 
@@ -217,12 +219,8 @@
 		return -ENOMEM;
 
 	memset(beep, 0, sizeof(*beep));
-	beep->buf = (short *) kmalloc(BEEP_BUFLEN * 4, GFP_KERNEL);
-	if (! beep->buf) {
-		kfree(beep);
-		return -ENOMEM;
-	}
-	beep->addr = virt_to_bus(beep->buf);
+	beep->buf = dma_alloc_coherent(&chip->pdev->dev, BEEP_BUFLEN * 4,
+					&beep->addr, GFP_KERNEL);
 
 	beep->dev.evbit[0] = BIT(EV_SND);
 	beep->dev.sndbit[0] = BIT(SND_BELL) | BIT(SND_TONE);
@@ -255,7 +253,8 @@
 {
 	if (chip->beep) {
 		input_unregister_device(&chip->beep->dev);
-		kfree(chip->beep->buf);
+		dma_free_coherent(&chip->pdev->dev, BEEP_BUFLEN * 4,
+				  chip->beep->buf, chip->beep->addr);
 		kfree(chip->beep);
 		chip->beep = NULL;
 	}
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;
 }
diff --git a/sound/ppc/pmac.h b/sound/ppc/pmac.h
index a699b01..dc6c99d 100644
--- a/sound/ppc/pmac.h
+++ b/sound/ppc/pmac.h
@@ -60,7 +60,8 @@
  * DBDMA space
  */
 struct snd_pmac_dbdma {
-	unsigned long addr;
+	dma_addr_t dma_base;
+	dma_addr_t addr;
 	struct dbdma_cmd __iomem *cmds;
 	void *space;
 	int size;
@@ -101,6 +102,7 @@
 
 	/* h/w info */
 	struct device_node *node;
+	struct pci_dev *pdev;
 	unsigned int revision;
 	unsigned int manufacturer;
 	unsigned int subframe;
@@ -110,6 +112,7 @@
 	unsigned int has_iic : 1;
 	unsigned int is_pbook_3400 : 1;
 	unsigned int is_pbook_G3 : 1;
+	unsigned int is_k2 : 1;
 
 	unsigned int can_byte_swap : 1;
 	unsigned int can_duplex : 1;
@@ -157,6 +160,7 @@
 	snd_kcontrol_t *speaker_sw_ctl;
 	snd_kcontrol_t *drc_sw_ctl;	/* only used for tumbler -ReneR */
 	snd_kcontrol_t *hp_detect_ctl;
+	snd_kcontrol_t *lineout_sw_ctl;
 
 	/* lowlevel callbacks */
 	void (*set_format)(pmac_t *chip);
diff --git a/sound/ppc/tumbler.c b/sound/ppc/tumbler.c
index cb6916e..c71807e 100644
--- a/sound/ppc/tumbler.c
+++ b/sound/ppc/tumbler.c
@@ -35,14 +35,19 @@
 #include <sound/core.h>
 #include <asm/io.h>
 #include <asm/irq.h>
-#ifdef CONFIG_PPC_HAS_FEATURE_CALLS
+#include <asm/machdep.h>
 #include <asm/pmac_feature.h>
-#else
-#error old crap
-#endif
 #include "pmac.h"
 #include "tumbler_volume.h"
 
+#undef DEBUG
+
+#ifdef DEBUG
+#define DBG(fmt...) printk(fmt)
+#else
+#define DBG(fmt...)
+#endif
+
 /* i2c address for tumbler */
 #define TAS_I2C_ADDR	0x34
 
@@ -78,21 +83,22 @@
 };
 
 typedef struct pmac_gpio {
-#ifdef CONFIG_PPC_HAS_FEATURE_CALLS
 	unsigned int addr;
-#else
-	void __iomem *addr;
-#endif
-	int active_state;
+	u8 active_val;
+	u8 inactive_val;
+	u8 active_state;
 } pmac_gpio_t;
 
 typedef struct pmac_tumbler_t {
 	pmac_keywest_t i2c;
 	pmac_gpio_t audio_reset;
 	pmac_gpio_t amp_mute;
+	pmac_gpio_t line_mute;
+	pmac_gpio_t line_detect;
 	pmac_gpio_t hp_mute;
 	pmac_gpio_t hp_detect;
 	int headphone_irq;
+	int lineout_irq;
 	unsigned int master_vol[2];
 	unsigned int save_master_switch[2];
 	unsigned int master_switch[2];
@@ -120,6 +126,7 @@
 							regs[0], regs[1]);
 			if (err >= 0)
 				break;
+			DBG("(W) i2c error %d\n", err);
 			mdelay(10);
 		} while (count--);
 		if (err < 0)
@@ -137,6 +144,7 @@
 		TAS_REG_MCS, (1<<6)|(2<<4)|(2<<2)|0,
 		0, /* terminator */
 	};
+	DBG("(I) tumbler init client\n");
 	return send_init_client(i2c, regs);
 }
 
@@ -151,36 +159,27 @@
 		TAS_REG_ACS, 0,
 		0, /* terminator */
 	};
+	DBG("(I) snapper init client\n");
 	return send_init_client(i2c, regs);
 }
 	
 /*
  * gpio access
  */
-#ifdef CONFIG_PPC_HAS_FEATURE_CALLS
 #define do_gpio_write(gp, val) \
 	pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, (gp)->addr, val)
 #define do_gpio_read(gp) \
 	pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, (gp)->addr, 0)
 #define tumbler_gpio_free(gp) /* NOP */
-#else
-#define do_gpio_write(gp, val)	writeb(val, (gp)->addr)
-#define do_gpio_read(gp)	readb((gp)->addr)
-static inline void tumbler_gpio_free(pmac_gpio_t *gp)
-{
-	if (gp->addr) {
-		iounmap(gp->addr);
-		gp->addr = NULL;
-	}
-}
-#endif /* CONFIG_PPC_HAS_FEATURE_CALLS */
 
 static void write_audio_gpio(pmac_gpio_t *gp, int active)
 {
 	if (! gp->addr)
 		return;
-	active = active ? gp->active_state : !gp->active_state;
-	do_gpio_write(gp, active ? 0x05 : 0x04);
+	active = active ? gp->active_val : gp->inactive_val;
+
+	do_gpio_write(gp, active);
+	DBG("(I) gpio %x write %d\n", gp->addr, active);
 }
 
 static int read_audio_gpio(pmac_gpio_t *gp)
@@ -663,7 +662,7 @@
  * to avoid codec reset on ibook M7
  */
 
-enum { TUMBLER_MUTE_HP, TUMBLER_MUTE_AMP };
+enum { TUMBLER_MUTE_HP, TUMBLER_MUTE_AMP, TUMBLER_MUTE_LINE };
 
 static int tumbler_get_mute_switch(snd_kcontrol_t *kcontrol, snd_ctl_elem_value_t *ucontrol)
 {
@@ -672,7 +671,18 @@
 	pmac_gpio_t *gp;
 	if (! (mix = chip->mixer_data))
 		return -ENODEV;
-	gp = (kcontrol->private_value == TUMBLER_MUTE_HP) ? &mix->hp_mute : &mix->amp_mute;
+	switch(kcontrol->private_value) {
+	case TUMBLER_MUTE_HP:
+		gp = &mix->hp_mute;	break;
+	case TUMBLER_MUTE_AMP:
+		gp = &mix->amp_mute;	break;
+	case TUMBLER_MUTE_LINE:
+		gp = &mix->line_mute;	break;
+	default:
+		gp = NULL;
+	}
+	if (gp == NULL)
+		return -EINVAL;
 	ucontrol->value.integer.value[0] = ! read_audio_gpio(gp);
 	return 0;
 }
@@ -689,7 +699,18 @@
 #endif	
 	if (! (mix = chip->mixer_data))
 		return -ENODEV;
-	gp = (kcontrol->private_value == TUMBLER_MUTE_HP) ? &mix->hp_mute : &mix->amp_mute;
+	switch(kcontrol->private_value) {
+	case TUMBLER_MUTE_HP:
+		gp = &mix->hp_mute;	break;
+	case TUMBLER_MUTE_AMP:
+		gp = &mix->amp_mute;	break;
+	case TUMBLER_MUTE_LINE:
+		gp = &mix->line_mute;	break;
+	default:
+		gp = NULL;
+	}
+	if (gp == NULL)
+		return -EINVAL;
 	val = ! read_audio_gpio(gp);
 	if (val != ucontrol->value.integer.value[0]) {
 		write_audio_gpio(gp, ! ucontrol->value.integer.value[0]);
@@ -833,6 +854,14 @@
 	.put = tumbler_put_mute_switch,
 	.private_value = TUMBLER_MUTE_AMP,
 };
+static snd_kcontrol_new_t tumbler_lineout_sw __initdata = {
+	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+	.name = "Line Out Playback Switch",
+	.info = snd_pmac_boolean_mono_info,
+	.get = tumbler_get_mute_switch,
+	.put = tumbler_put_mute_switch,
+	.private_value = TUMBLER_MUTE_LINE,
+};
 static snd_kcontrol_new_t tumbler_drc_sw __initdata = {
 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 	.name = "DRC Switch",
@@ -849,7 +878,21 @@
 static int tumbler_detect_headphone(pmac_t *chip)
 {
 	pmac_tumbler_t *mix = chip->mixer_data;
-	return read_audio_gpio(&mix->hp_detect);
+	int detect = 0;
+
+	if (mix->hp_detect.addr)
+		detect |= read_audio_gpio(&mix->hp_detect);
+	return detect;
+}
+
+static int tumbler_detect_lineout(pmac_t *chip)
+{
+	pmac_tumbler_t *mix = chip->mixer_data;
+	int detect = 0;
+
+	if (mix->line_detect.addr)
+		detect |= read_audio_gpio(&mix->line_detect);
+	return detect;
 }
 
 static void check_mute(pmac_t *chip, pmac_gpio_t *gp, int val, int do_notify, snd_kcontrol_t *sw)
@@ -868,6 +911,7 @@
 {
 	pmac_t *chip = (pmac_t*) self;
 	pmac_tumbler_t *mix;
+	int headphone, lineout;
 
 	if (!chip)
 		return;
@@ -875,23 +919,35 @@
 	mix = chip->mixer_data;
 	snd_assert(mix, return);
 
-	if (tumbler_detect_headphone(chip)) {
-		/* mute speaker */
-		check_mute(chip, &mix->hp_mute, 0, mix->auto_mute_notify,
-			   chip->master_sw_ctl);
+	headphone = tumbler_detect_headphone(chip);
+	lineout = tumbler_detect_lineout(chip);
+
+	DBG("headphone: %d, lineout: %d\n", headphone, lineout);
+
+	if (headphone || lineout) {
+		/* unmute headphone/lineout & mute speaker */
+		if (headphone)
+			check_mute(chip, &mix->hp_mute, 0, mix->auto_mute_notify,
+				   chip->master_sw_ctl);
+		if (lineout && mix->line_mute.addr != 0)
+			check_mute(chip, &mix->line_mute, 0, mix->auto_mute_notify,
+				   chip->lineout_sw_ctl);
 		if (mix->anded_reset)
 			big_mdelay(10);
 		check_mute(chip, &mix->amp_mute, 1, mix->auto_mute_notify,
 			   chip->speaker_sw_ctl);
 		mix->drc_enable = 0;
 	} else {
-		/* unmute speaker */
+		/* unmute speaker, mute others */
 		check_mute(chip, &mix->amp_mute, 0, mix->auto_mute_notify,
 			   chip->speaker_sw_ctl);
 		if (mix->anded_reset)
 			big_mdelay(10);
 		check_mute(chip, &mix->hp_mute, 1, mix->auto_mute_notify,
 			   chip->master_sw_ctl);
+		if (mix->line_mute.addr != 0)
+			check_mute(chip, &mix->line_mute, 1, mix->auto_mute_notify,
+				   chip->lineout_sw_ctl);
 		mix->drc_enable = 1;
 	}
 	if (mix->auto_mute_notify) {
@@ -967,7 +1023,7 @@
 }
 
 /* find an audio device and get its address */
-static long tumbler_find_device(const char *device, pmac_gpio_t *gp, int is_compatible)
+static long tumbler_find_device(const char *device, const char *platform, pmac_gpio_t *gp, int is_compatible)
 {
 	struct device_node *node;
 	u32 *base, addr;
@@ -977,6 +1033,7 @@
 	else
 		node = find_audio_device(device);
 	if (! node) {
+		DBG("(W) cannot find audio device %s !\n", device);
 		snd_printdd("cannot find device %s\n", device);
 		return -ENODEV;
 	}
@@ -985,29 +1042,48 @@
 	if (! base) {
 		base = (u32 *)get_property(node, "reg", NULL);
 		if (!base) {
+			DBG("(E) cannot find address for device %s !\n", device);
 			snd_printd("cannot find address for device %s\n", device);
 			return -ENODEV;
 		}
-		/* this only work if PPC_HAS_FEATURE_CALLS is set as we
-		 * are only getting the low part of the address
-		 */
 		addr = *base;
 		if (addr < 0x50)
 			addr += 0x50;
 	} else
 		addr = *base;
 
-#ifdef CONFIG_PPC_HAS_FEATURE_CALLS
 	gp->addr = addr & 0x0000ffff;
-#else
-	gp->addr = ioremap((unsigned long)addr, 1);
-#endif
 	/* Try to find the active state, default to 0 ! */
 	base = (u32 *)get_property(node, "audio-gpio-active-state", NULL);
-	if (base)
+	if (base) {
 		gp->active_state = *base;
-	else
+		gp->active_val = (*base) ? 0x5 : 0x4;
+		gp->inactive_val = (*base) ? 0x4 : 0x5;
+	} else {
+		u32 *prop = NULL;
 		gp->active_state = 0;
+		gp->active_val = 0x4;
+		gp->inactive_val = 0x5;
+		/* Here are some crude hacks to extract the GPIO polarity and
+		 * open collector informations out of the do-platform script
+		 * as we don't yet have an interpreter for these things
+		 */
+		if (platform)
+			prop = (u32 *)get_property(node, platform, NULL);
+		if (prop) {
+			if (prop[3] == 0x9 && prop[4] == 0x9) {
+				gp->active_val = 0xd;
+				gp->inactive_val = 0xc;
+			}
+			if (prop[3] == 0x1 && prop[4] == 0x1) {
+				gp->active_val = 0x5;
+				gp->inactive_val = 0x4;
+			}
+		}
+	}
+
+	DBG("(I) GPIO device %s found, offset: %x, active state: %d !\n",
+	    device, gp->addr, gp->active_state);
 
 	return (node->n_intrs > 0) ? node->intrs[0].line : 0;
 }
@@ -1018,6 +1094,7 @@
 	pmac_tumbler_t *mix = chip->mixer_data;
 
 	if (mix->anded_reset) {
+		DBG("(I) codec anded reset !\n");
 		write_audio_gpio(&mix->hp_mute, 0);
 		write_audio_gpio(&mix->amp_mute, 0);
 		big_mdelay(200);
@@ -1028,6 +1105,8 @@
 		write_audio_gpio(&mix->amp_mute, 0);
 		big_mdelay(100);
 	} else {
+		DBG("(I) codec normal reset !\n");
+
 		write_audio_gpio(&mix->audio_reset, 0);
 		big_mdelay(200);
 		write_audio_gpio(&mix->audio_reset, 1);
@@ -1045,6 +1124,8 @@
 
 	if (mix->headphone_irq >= 0)
 		disable_irq(mix->headphone_irq);
+	if (mix->lineout_irq >= 0)
+		disable_irq(mix->lineout_irq);
 	mix->save_master_switch[0] = mix->master_switch[0];
 	mix->save_master_switch[1] = mix->master_switch[1];
 	mix->master_switch[0] = mix->master_switch[1] = 0;
@@ -1099,41 +1180,59 @@
 		chip->update_automute(chip, 0);
 	if (mix->headphone_irq >= 0)
 		enable_irq(mix->headphone_irq);
+	if (mix->lineout_irq >= 0)
+		enable_irq(mix->lineout_irq);
 }
 #endif
 
 /* initialize tumbler */
 static int __init tumbler_init(pmac_t *chip)
 {
-	int irq, err;
+	int irq;
 	pmac_tumbler_t *mix = chip->mixer_data;
 	snd_assert(mix, return -EINVAL);
 
-	if (tumbler_find_device("audio-hw-reset", &mix->audio_reset, 0) < 0)
-		tumbler_find_device("hw-reset", &mix->audio_reset, 1);
-	if (tumbler_find_device("amp-mute", &mix->amp_mute, 0) < 0)
-		tumbler_find_device("amp-mute", &mix->amp_mute, 1);
-	if (tumbler_find_device("headphone-mute", &mix->hp_mute, 0) < 0)
-		tumbler_find_device("headphone-mute", &mix->hp_mute, 1);
-	irq = tumbler_find_device("headphone-detect", &mix->hp_detect, 0);
+	if (tumbler_find_device("audio-hw-reset",
+				"platform-do-hw-reset",
+				&mix->audio_reset, 0) < 0)
+		tumbler_find_device("hw-reset",
+				    "platform-do-hw-reset",
+				    &mix->audio_reset, 1);
+	if (tumbler_find_device("amp-mute",
+				"platform-do-amp-mute",
+				&mix->amp_mute, 0) < 0)
+		tumbler_find_device("amp-mute",
+				    "platform-do-amp-mute",
+				    &mix->amp_mute, 1);
+	if (tumbler_find_device("headphone-mute",
+				"platform-do-headphone-mute",
+				&mix->hp_mute, 0) < 0)
+		tumbler_find_device("headphone-mute",
+				    "platform-do-headphone-mute",
+				    &mix->hp_mute, 1);
+	if (tumbler_find_device("line-output-mute",
+				"platform-do-lineout-mute",
+				&mix->line_mute, 0) < 0)
+		tumbler_find_device("line-output-mute",
+				   "platform-do-lineout-mute",
+				    &mix->line_mute, 1);
+	irq = tumbler_find_device("headphone-detect",
+				  NULL, &mix->hp_detect, 0);
 	if (irq < 0)
-		irq = tumbler_find_device("headphone-detect", &mix->hp_detect, 1);
+		irq = tumbler_find_device("headphone-detect",
+					  NULL, &mix->hp_detect, 1);
 	if (irq < 0)
-		irq = tumbler_find_device("keywest-gpio15", &mix->hp_detect, 1);
+		irq = tumbler_find_device("keywest-gpio15",
+					  NULL, &mix->hp_detect, 1);
+	mix->headphone_irq = irq;
+ 	irq = tumbler_find_device("line-output-detect",
+				  NULL, &mix->line_detect, 0);
+ 	if (irq < 0)
+		irq = tumbler_find_device("line-output-detect",
+					  NULL, &mix->line_detect, 1);
+	mix->lineout_irq = irq;
 
 	tumbler_reset_audio(chip);
-
-	/* activate headphone status interrupts */
-  	if (irq >= 0) {
-		unsigned char val;
-		if ((err = request_irq(irq, headphone_intr, 0,
-				       "Tumbler Headphone Detection", chip)) < 0)
-			return err;
-		/* activate headphone status interrupts */
-		val = do_gpio_read(&mix->hp_detect);
-		do_gpio_write(&mix->hp_detect, val | 0x80);
-	}
-	mix->headphone_irq = irq;
   
 	return 0;
 }
@@ -1146,6 +1245,8 @@
 
 	if (mix->headphone_irq >= 0)
 		free_irq(mix->headphone_irq, chip);
+	if (mix->lineout_irq >= 0)
+		free_irq(mix->lineout_irq, chip);
 	tumbler_gpio_free(&mix->audio_reset);
 	tumbler_gpio_free(&mix->amp_mute);
 	tumbler_gpio_free(&mix->hp_mute);
@@ -1207,6 +1308,8 @@
 	else
 		mix->i2c.addr = TAS_I2C_ADDR;
 
+	DBG("(I) TAS i2c address is: %x\n", mix->i2c.addr);
+
 	if (chip->model == PMAC_TUMBLER) {
 		mix->i2c.init_client = tumbler_init_client;
 		mix->i2c.name = "TAS3001c";
@@ -1242,6 +1345,11 @@
 	chip->speaker_sw_ctl = snd_ctl_new1(&tumbler_speaker_sw, chip);
 	if ((err = snd_ctl_add(chip->card, chip->speaker_sw_ctl)) < 0)
 		return err;
+	if (mix->line_mute.addr != 0) {
+		chip->lineout_sw_ctl = snd_ctl_new1(&tumbler_lineout_sw, chip);
+		if ((err = snd_ctl_add(chip->card, chip->lineout_sw_ctl)) < 0)
+			return err;
+	}
 	chip->drc_sw_ctl = snd_ctl_new1(&tumbler_drc_sw, chip);
 	if ((err = snd_ctl_add(chip->card, chip->drc_sw_ctl)) < 0)
 		return err;
@@ -1254,11 +1362,32 @@
 	INIT_WORK(&device_change, device_change_handler, (void *)chip);
 
 #ifdef PMAC_SUPPORT_AUTOMUTE
-	if (mix->headphone_irq >=0 && (err = snd_pmac_add_automute(chip)) < 0)
+	if ((mix->headphone_irq >=0 || mix->lineout_irq >= 0)
+	    && (err = snd_pmac_add_automute(chip)) < 0)
 		return err;
 	chip->detect_headphone = tumbler_detect_headphone;
 	chip->update_automute = tumbler_update_automute;
 	tumbler_update_automute(chip, 0); /* update the status only */
+
+	/* activate headphone status interrupts */
+  	if (mix->headphone_irq >= 0) {
+		unsigned char val;
+		if ((err = request_irq(mix->headphone_irq, headphone_intr, 0,
+				       "Sound Headphone Detection", chip)) < 0)
+			return 0;
+		/* activate headphone status interrupts */
+		val = do_gpio_read(&mix->hp_detect);
+		do_gpio_write(&mix->hp_detect, val | 0x80);
+	}
+  	if (mix->lineout_irq >= 0) {
+		unsigned char val;
+		if ((err = request_irq(mix->lineout_irq, headphone_intr, 0,
+				       "Sound Lineout Detection", chip)) < 0)
+			return 0;
+		/* activate headphone status interrupts */
+		val = do_gpio_read(&mix->line_detect);
+		do_gpio_write(&mix->line_detect, val | 0x80);
+	}
 #endif
 
 	return 0;