Staging: sst: Intel SST audio driver

This is the Intel SST audio driver.

As compared to the previous versions it has all the printks and other stuff
noted cleaned up and more hardware support. The Aava support is disabled in
this patch (is_aava resolves to 0) because the Aava board detection logic
is not yet upstream.

The driver itself is a combination of a traditional ALSA driver and a
hardware assisted offload driver which can play audio while the processor
is asleep but which can't do all the more interactive stuff.

In the general case most software would use the ALSA interface, but the
other interface is needed for certain classes of use such as music playback
on highly power consumption sensitive devices.

This is going to staging primarily because it depends upon the staging memrar
driver.

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Harsha Priya <priya.harsha@intel.com>
[Merged together and tweaked for -next]
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 410 insertions, 0 deletions

diff --git a/drivers/staging/intel_sst/intelmid_msic_control.c b/drivers/staging/intel_sst/intelmid_msic_control.c
new file mode 100644
index 0000000..4d1755e
--- /dev/null
+++ b/drivers/staging/intel_sst/intelmid_msic_control.c
@@ -0,0 +1,410 @@
+/*
+ *  intelmid_vm_control.c - Intel Sound card driver for MID
+ *
+ *  Copyright (C) 2010 Intel Corp
+ *  Authors:	Vinod Koul <vinod.koul@intel.com>
+ *
+ *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; version 2 of the License.
+ *
+ *  This program is distributed in the hope that it will be useful, but
+ *  WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License along
+ *  with this program; if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This file contains the control operations of msic vendors
+ */
+
+#include <linux/pci.h>
+#include <linux/file.h>
+#include "intel_sst.h"
+#include "intel_sst_ioctl.h"
+#include "intelmid_snd_control.h"
+
+static int msic_init_card(void)
+{
+	struct sc_reg_access sc_access[] = {
+		/* dmic configuration */
+		{0x241, 0x85, 0},
+		{0x242, 0x02, 0},
+		/* audio paths config */
+		{0x24C, 0x10, 0},
+		{0x24D, 0x32, 0},
+		/* PCM2 interface slots */
+		/* preconfigured slots for 0-5 both tx, rx */
+		{0x272, 0x10, 0},
+		{0x273, 0x32, 0},
+		{0x274, 0xFF, 0},
+		{0x275, 0x10, 0},
+		{0x276, 0x32, 0},
+		{0x277, 0x54, 0},
+		/*Sinc5 decimator*/
+		{0x24E, 0x28, 0},
+		/*TI vibra w/a settings*/
+		{0x384, 0x80, 0},
+		{0x385, 0x80, 0},
+		/*vibra settings*/
+		{0x267, 0x00, 0},
+		{0x26A, 0x10, 0},
+		{0x261, 0x00, 0},
+		{0x264, 0x10, 0},
+		/* pcm port setting */
+		{0x278, 0x00, 0},
+		{0x27B, 0x01, 0},
+		{0x27C, 0x0a, 0},
+		/* Set vol HSLRVOLCTRL, IHFVOL */
+		{0x259, 0x04, 0},
+		{0x25A, 0x04, 0},
+		{0x25B, 0x04, 0},
+		{0x25C, 0x04, 0},
+		/* HSEPRXCTRL  Enable the headset left and right FIR filters  */
+		{0x250, 0x30, 0},
+		/* HSMIXER */
+		{0x256, 0x11, 0},
+		/* amic configuration */
+		{0x249, 0x09, 0x0},
+		{0x24A, 0x09, 0x0},
+		/* unmask ocaudio/accdet interrupts */
+		{0x1d, 0x00, 0x00},
+		{0x1e, 0x00, 0x00},
+	};
+	snd_msic_ops.card_status = SND_CARD_INIT_DONE;
+	sst_sc_reg_access(sc_access, PMIC_WRITE, 30);
+	snd_msic_ops.pb_on = 0;
+	snd_msic_ops.cap_on = 0;
+	snd_msic_ops.input_dev_id = DMIC; /*def dev*/
+	snd_msic_ops.output_dev_id = STEREO_HEADPHONE;
+	pr_debug("sst: msic init complete!!\n");
+	return 0;
+}
+
+static int msic_power_up_pb(unsigned int device)
+{
+	struct sc_reg_access sc_access1[] = {
+		/* turn on the audio power supplies */
+		{0x0DB, 0x05, 0},
+		/*  VHSP */
+		{0x0DC, 0xFF, 0},
+		/*  VHSN */
+		{0x0DD, 0x3F, 0},
+		/* turn on PLL */
+		{0x240, 0x21, 0},
+	};
+	struct sc_reg_access sc_access2[] = {
+		/*  disable driver */
+		{0x25D, 0x0, 0x43},
+		/* DAC CONFIG ; both HP, LP on */
+		{0x257, 0x03, 0x03},
+	};
+	struct sc_reg_access sc_access3[] = {
+		/* HSEPRXCTRL  Enable the headset left and right FIR filters  */
+		{0x250, 0x30, 0},
+		/* HSMIXER */
+		{0x256, 0x11, 0},
+	};
+	struct sc_reg_access sc_access4[] = {
+		/* enable driver */
+		{0x25D, 0x3, 0x3},
+		/* unmute the headset */
+		{ 0x259, 0x80, 0x80},
+		{ 0x25A, 0x80, 0x80},
+	};
+	struct sc_reg_access sc_access_vihf[] = {
+		/*  VIHF ON */
+		{0x0C9, 0x2D, 0x00},
+	};
+	struct sc_reg_access sc_access22[] = {
+		/*  disable driver */
+		{0x25D, 0x00, 0x0C},
+		/*Filer DAC enable*/
+		{0x251, 0x03, 0x03},
+		{0x257, 0x0C, 0x0C},
+	};
+	struct sc_reg_access sc_access32[] = {
+		/*enable drv*/
+		{0x25D, 0x0C, 0x0c},
+	};
+	struct sc_reg_access sc_access42[] = {
+		/*unmute headset*/
+		{0x25B, 0x80, 0x80},
+		{0x25C, 0x80, 0x80},
+	};
+	struct sc_reg_access sc_access23[] = {
+		/*  disable driver */
+		{0x25D, 0x0, 0x43},
+		/* DAC CONFIG ; both HP, LP on */
+		{0x257, 0x03, 0x03},
+	};
+	struct sc_reg_access sc_access43[] = {
+		/* enable driver */
+		{0x25D, 0x40, 0x40},
+		/* unmute the headset */
+		{ 0x259, 0x80, 0x80},
+		{ 0x25A, 0x80, 0x80},
+	};
+	struct sc_reg_access sc_access_vib[] = {
+		/* enable driver, ADC */
+		{0x25D, 0x10, 0x10},
+		{0x264, 0x02, 0x02},
+	};
+	struct sc_reg_access sc_access_hap[] = {
+		/* enable driver, ADC */
+		{0x25D, 0x20, 0x20},
+		{0x26A, 0x02, 0x02},
+	};
+	struct sc_reg_access sc_access_pcm2[] = {
+		/* enable pcm 2 */
+		{0x27C, 0x1, 0x1},
+	};
+	int retval = 0;
+
+	if (snd_msic_ops.card_status == SND_CARD_UN_INIT) {
+		retval = msic_init_card();
+		if (retval)
+			return retval;
+	}
+
+	pr_debug("sst: powering up pb.... Device %d\n", device);
+	sst_sc_reg_access(sc_access1, PMIC_WRITE, 4);
+	switch (device) {
+	case SND_SST_DEVICE_HEADSET:
+		if (snd_msic_ops.output_dev_id == STEREO_HEADPHONE) {
+			sst_sc_reg_access(sc_access2, PMIC_READ_MODIFY, 2);
+			sst_sc_reg_access(sc_access3, PMIC_WRITE, 2);
+			sst_sc_reg_access(sc_access4, PMIC_READ_MODIFY, 3);
+		} else {
+			sst_sc_reg_access(sc_access23, PMIC_READ_MODIFY, 2);
+			sst_sc_reg_access(sc_access3, PMIC_WRITE, 2);
+			sst_sc_reg_access(sc_access43, PMIC_READ_MODIFY, 3);
+		}
+		snd_msic_ops.pb_on = 1;
+		break;
+
+	case SND_SST_DEVICE_IHF:
+		sst_sc_reg_access(sc_access_vihf, PMIC_WRITE, 1);
+		sst_sc_reg_access(sc_access22, PMIC_READ_MODIFY, 3);
+		sst_sc_reg_access(sc_access32, PMIC_READ_MODIFY, 1);
+		sst_sc_reg_access(sc_access42, PMIC_READ_MODIFY, 2);
+		break;
+
+	case SND_SST_DEVICE_VIBRA:
+		sst_sc_reg_access(sc_access_vib, PMIC_READ_MODIFY, 2);
+		break;
+
+	case SND_SST_DEVICE_HAPTIC:
+		sst_sc_reg_access(sc_access_hap, PMIC_READ_MODIFY, 2);
+		break;
+
+	default:
+		pr_warn("sst: Wrong Device %d, selected %d\n",
+			       device, snd_msic_ops.output_dev_id);
+	}
+	return sst_sc_reg_access(sc_access_pcm2, PMIC_READ_MODIFY, 1);
+}
+
+static int msic_power_up_cp(unsigned int device)
+{
+	struct sc_reg_access sc_access[] = {
+		/* turn on the audio power supplies */
+		{0x0DB, 0x05, 0},
+		/*  VHSP */
+		{0x0DC, 0xFF, 0},
+		/*  VHSN */
+		{0x0DD, 0x3F, 0},
+		/* turn on PLL */
+		{0x240, 0x21, 0},
+
+		/*  Turn on DMIC supply  */
+		{0x247, 0xA0, 0x0},
+		{0x240, 0x21, 0x0},
+		{0x24C, 0x10, 0x0},
+
+		/* mic demux enable */
+		{0x245, 0x3F, 0x0},
+		{0x246, 0x7, 0x0},
+
+	};
+	struct sc_reg_access sc_access_amic[] = {
+		/* turn on the audio power supplies */
+		{0x0DB, 0x05, 0},
+		/*  VHSP */
+		{0x0DC, 0xFF, 0},
+		/*  VHSN */
+		{0x0DD, 0x3F, 0},
+		/* turn on PLL */
+		{0x240, 0x21, 0},
+		/*ADC EN*/
+		{0x248, 0x05, 0x0},
+		{0x24C, 0x76, 0x0},
+		/*MIC EN*/
+		{0x249, 0x09, 0x0},
+		{0x24A, 0x09, 0x0},
+		/*  Turn on AMIC supply  */
+		{0x247, 0xFC, 0x0},
+
+	};
+	struct sc_reg_access sc_access2[] = {
+		/* enable pcm 2 */
+		{0x27C, 0x1, 0x1},
+	};
+	struct sc_reg_access sc_access3[] = {
+		/*wait for mic to stabalize before turning on audio channels*/
+		{0x24F, 0x3C, 0x0},
+	};
+	int retval = 0;
+
+	if (snd_msic_ops.card_status == SND_CARD_UN_INIT) {
+		retval = msic_init_card();
+		if (retval)
+			return retval;
+	}
+
+	pr_debug("sst: powering up cp....%d\n", snd_msic_ops.input_dev_id);
+	sst_sc_reg_access(sc_access2, PMIC_READ_MODIFY, 1);
+	snd_msic_ops.cap_on = 1;
+	if (snd_msic_ops.input_dev_id == AMIC)
+		sst_sc_reg_access(sc_access_amic, PMIC_WRITE, 9);
+	else
+		sst_sc_reg_access(sc_access, PMIC_WRITE, 9);
+	return sst_sc_reg_access(sc_access3, PMIC_WRITE, 1);
+
+}
+
+static int msic_power_down(void)
+{
+	int retval = 0;
+
+	pr_debug("sst: powering dn msic\n");
+	snd_msic_ops.pb_on = 0;
+	snd_msic_ops.cap_on = 0;
+	return retval;
+}
+
+static int msic_power_down_pb(void)
+{
+	int retval = 0;
+
+	pr_debug("sst: powering dn pb....\n");
+	snd_msic_ops.pb_on = 0;
+	return retval;
+}
+
+static int msic_power_down_cp(void)
+{
+	int retval = 0;
+
+	pr_debug("sst: powering dn cp....\n");
+	snd_msic_ops.cap_on = 0;
+	return retval;
+}
+
+static int msic_set_selected_output_dev(u8 value)
+{
+	int retval = 0;
+
+	pr_debug("sst: msic set selected output:%d\n", value);
+	snd_msic_ops.output_dev_id = value;
+	if (snd_msic_ops.pb_on)
+		msic_power_up_pb(SND_SST_DEVICE_HEADSET);
+	return retval;
+}
+
+static int msic_set_selected_input_dev(u8 value)
+{
+
+	struct sc_reg_access sc_access_dmic[] = {
+		{0x24C, 0x10, 0x0},
+	};
+	struct sc_reg_access sc_access_amic[] = {
+		{0x24C, 0x76, 0x0},
+
+	};
+	int retval = 0;
+
+	pr_debug("sst: msic_set_selected_input_dev:%d\n", value);
+	snd_msic_ops.input_dev_id = value;
+	switch (value) {
+	case AMIC:
+		pr_debug("sst: Selecting AMIC1\n");
+		retval = sst_sc_reg_access(sc_access_amic, PMIC_WRITE, 1);
+		break;
+	case DMIC:
+		pr_debug("sst: Selecting DMIC1\n");
+		retval = sst_sc_reg_access(sc_access_dmic, PMIC_WRITE, 1);
+		break;
+	default:
+		return -EINVAL;
+
+	}
+	if (snd_msic_ops.cap_on)
+		retval = msic_power_up_cp(SND_SST_DEVICE_CAPTURE);
+	return retval;
+}
+
+static int msic_set_pcm_voice_params(void)
+{
+	return 0;
+}
+
+static int msic_set_pcm_audio_params(int sfreq, int word_size, int num_channel)
+{
+	return 0;
+}
+
+static int msic_set_audio_port(int status)
+{
+	return 0;
+}
+
+static int msic_set_voice_port(int status)
+{
+	return 0;
+}
+
+static int msic_set_mute(int dev_id, u8 value)
+{
+	return 0;
+}
+
+static int msic_set_vol(int dev_id, int value)
+{
+	return 0;
+}
+
+static int msic_get_mute(int dev_id, u8 *value)
+{
+	return 0;
+}
+
+static int msic_get_vol(int dev_id, int *value)
+{
+	return 0;
+}
+
+struct snd_pmic_ops snd_msic_ops = {
+	.set_input_dev	=	msic_set_selected_input_dev,
+	.set_output_dev =	msic_set_selected_output_dev,
+	.set_mute	=	msic_set_mute,
+	.get_mute	=	msic_get_mute,
+	.set_vol	=	msic_set_vol,
+	.get_vol	=	msic_get_vol,
+	.init_card	=	msic_init_card,
+	.set_pcm_audio_params	= msic_set_pcm_audio_params,
+	.set_pcm_voice_params	= msic_set_pcm_voice_params,
+	.set_voice_port = msic_set_voice_port,
+	.set_audio_port = msic_set_audio_port,
+	.power_up_pmic_pb =	msic_power_up_pb,
+	.power_up_pmic_cp =	msic_power_up_cp,
+	.power_down_pmic_pb =	msic_power_down_pb,
+	.power_down_pmic_cp =	msic_power_down_cp,
+	.power_down_pmic =	msic_power_down,
+};