[PATCH] ARM: OMAP: Alsa modularisations and support for tsc2101 3/3 (round 2)

This 3/3 patch adds the tsc2101 alsa driver support for the omap-h2.

Just like the aic23 alsa driver, the codec specific functionality is
separated from the common alsa driver functionality that is in the omap-alsa.c.
tsc2101 mixer supports currently the playback selection between
loudspeaker and headset/handset.
Addon of others input and targets should be possible to do afterwards.

In addition it should be possible to add later the support for the
dynamic clocks on top of this series of patches, as discussed
in the omap-linux mailing list.
Signed-off-by: Mika Laitio <lamikr@cc.jyu.fi>
Signed-off-by: Daniel Petrini <d.pensator@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap1/board-h2.c

@@ -40,8 +40,9 @@
 #include <asm/arch/irda.h>
 #include <asm/arch/usb.h>
 #include <asm/arch/keypad.h>
-#include <asm/arch/dma.h>
 #include <asm/arch/common.h>
+#include <asm/arch/mcbsp.h>
+#include <asm/arch/omap-alsa.h>
 
 extern int omap_gpio_init(void);
 
@@ -285,6 +286,41 @@ static struct platform_device h2_lcd_device = {
 	.id		= -1,
 };
 
+static struct omap_mcbsp_reg_cfg mcbsp_regs = { 
+	.spcr2 = FREE | FRST | GRST | XRST | XINTM(3),
+	.spcr1 = RINTM(3) | RRST,
+	.rcr2  = RPHASE | RFRLEN2(OMAP_MCBSP_WORD_8) |
+                RWDLEN2(OMAP_MCBSP_WORD_16) | RDATDLY(1),
+	.rcr1  = RFRLEN1(OMAP_MCBSP_WORD_8) | RWDLEN1(OMAP_MCBSP_WORD_16),
+	.xcr2  = XPHASE | XFRLEN2(OMAP_MCBSP_WORD_8) | 
+                XWDLEN2(OMAP_MCBSP_WORD_16) | XDATDLY(1) | XFIG,
+	.xcr1  = XFRLEN1(OMAP_MCBSP_WORD_8) | XWDLEN1(OMAP_MCBSP_WORD_16),
+	.srgr1 = FWID(15),
+	.srgr2 = GSYNC | CLKSP | FSGM | FPER(31),
+
+	.pcr0  = CLKXM | CLKRM | FSXP | FSRP | CLKXP | CLKRP,
+	//.pcr0 = CLKXP | CLKRP,        /* mcbsp: slave */
+};
+ 
+static struct omap_alsa_codec_config alsa_config = {
+	.name                   = "H2 TSC2101",
+	.mcbsp_regs_alsa        = &mcbsp_regs,
+	.codec_configure_dev    = NULL, // tsc2101_configure,
+	.codec_set_samplerate   = NULL, // tsc2101_set_samplerate,
+	.codec_clock_setup      = NULL, // tsc2101_clock_setup,
+	.codec_clock_on         = NULL, // tsc2101_clock_on,
+	.codec_clock_off        = NULL, // tsc2101_clock_off,
+	.get_default_samplerate = NULL, // tsc2101_get_default_samplerate,
+};    
+
+static struct platform_device h2_mcbsp1_device = {
+	.name	= "omap_alsa_mcbsp",
+	.id	= 1,
+	.dev = {
+		.platform_data	= &alsa_config,
+	}, 
+};    
+
 static struct platform_device *h2_devices[] __initdata = {
 	&h2_nor_device,
 	&h2_nand_device,
@@ -292,6 +328,7 @@ static struct platform_device *h2_devices[] __initdata = {
 	&h2_irda_device,
 	&h2_kp_device,
 	&h2_lcd_device,
+	&h2_mcbsp1_device,
 };
 
 static void __init h2_init_smc91x(void)

sound/arm/Kconfig

@@ -45,4 +45,18 @@ config SND_OMAP_AIC23
 	  To compile this driver as a module, choose M here: the module
 	  will be called snd-omap-aic23.
 	  
+config SND_OMAP_TSC2101
+ 	tristate "OMAP TSC2101 alsa driver"
+ 	depends on ARCH_OMAP && SND
+ 	select SND_PCM
+         select OMAP_TSC2101
+         select OMAP_UWIRE if ARCH_OMAP
+ 	help
+ 	  Say Y here if you have a OMAP platform board
+ 	  and want to use its TSC2101 audio chip. Driver has
+ 	  been tested with H2 and iPAQ h6300.
+ 
+ 	  To compile this driver as a module, choose M here: the module
+ 	  will be called snd-omap-tsc2101.
+
 endmenu

sound/arm/omap/Makefile

@@ -4,3 +4,6 @@
 #
 obj-$(CONFIG_SND_OMAP_AIC23) += snd-omap-alsa-aic23.o
 snd-omap-alsa-aic23-objs := omap-alsa.o omap-alsa-dma.o omap-alsa-aic23.o omap-alsa-aic23-mixer.o
+
+obj-$(CONFIG_SND_OMAP_TSC2101) += snd-omap-alsa-tsc2101.o
+snd-omap-alsa-tsc2101-objs := omap-alsa.o omap-alsa-dma.o omap-alsa-tsc2101.o omap-alsa-tsc2101-mixer.o

sound/arm/omap/omap-alsa-tsc2101-mixer.h

+/*
+ * sound/arm/omap/omap-alsa-tsc2101-mixer.c
+ * 
+ * Alsa Driver for TSC2101 codec for OMAP platform boards.
+ *
+ * Copyright (C) 2005 Mika Laitio <lamikr@cc.jyu.fi> and 
+ * 		     Everett Coleman II <gcc80x86@fuzzyneural.net>
+ *
+ * Based on the ideas in omap-aic23.c and sa11xx-uda1341.c
+ * Copyright (C) 2005 Instituto Nokia de Tecnologia - INdT - Manaus Brazil
+ * Copyright (C) 2002 Tomas Kasparek <tomas.kasparek@seznam.cz>
+ *
+ * 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; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * 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.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * History:
+ *
+ * 2006-03-01   Mika Laitio - Mixer for the tsc2101 driver used in omap boards.
+ * 		Can switch between headset and loudspeaker playback, 
+ * 		mute and unmute dgc, set dgc volume. Record source switch,
+ * 		keyclick, buzzer and headset volume and handset volume control 
+ * 		are still missing.
+ */
+
+#ifndef OMAPALSATSC2101MIXER_H_
+#define OMAPALSATSC2101MIXER_H_
+
+#include <asm/hardware/tsc2101.h>
+#include <../drivers/ssi/omap-tsc2101.h>
+#include "omap-alsa-dma.h"
+
+/* tsc2101 DAC gain control volume specific  */
+#define OUTPUT_VOLUME_MIN		0x7F	// 1111111 = -63.5 DB
+#define OUTPUT_VOLUME_MAX		0x32	// 110010
+#define OUTPUT_VOLUME_RANGE		(OUTPUT_VOLUME_MIN - OUTPUT_VOLUME_MAX)
+
+/* use input vol of 75 for 0dB gain */
+#define INPUT_VOLUME_MIN 		0x0
+#define INPUT_VOLUME_MAX		0x7D
+#define INPUT_VOLUME_RANGE		(INPUT_VOLUME_MAX - INPUT_VOLUME_MIN)
+
+#define PLAYBACK_TARGET_COUNT		0x02
+#define PLAYBACK_TARGET_LOUDSPEAKER	0x00
+#define PLAYBACK_TARGET_HEADPHONE	0x01
+
+/* following are used for register 03h Mixer PGA control bits D7-D5 for selecting record source */
+#define REC_SRC_TARGET_COUNT		0x08
+#define REC_SRC_SINGLE_ENDED_MICIN_HED	MPC_MICSEL(0)	// oss code referred to MIXER_LINE
+#define REC_SRC_SINGLE_ENDED_MICIN_HND	MPC_MICSEL(1)	// oss code referred to MIXER_MIC
+#define REC_SRC_SINGLE_ENDED_AUX1	MPC_MICSEL(2)
+#define REC_SRC_SINGLE_ENDED_AUX2	MPC_MICSEL(3)
+#define REC_SRC_MICIN_HED_AND_AUX1	MPC_MICSEL(4)
+#define REC_SRC_MICIN_HED_AND_AUX2	MPC_MICSEL(5)
+#define REC_SRC_MICIN_HND_AND_AUX1	MPC_MICSEL(6)
+#define REC_SRC_MICIN_HND_AND_AUX2	MPC_MICSEL(7)
+
+#define DEFAULT_OUTPUT_VOLUME		90	// default output volume to dac dgc
+#define DEFAULT_INPUT_VOLUME		20	// default record volume
+
+#define TSC2101_AUDIO_CODEC_REGISTERS_PAGE2     (2)
+
+#endif /*OMAPALSATSC2101MIXER_H_*/

sound/arm/omap/omap-alsa-tsc2101.h

+/*
+ * arch/arc/mach-omap1/omap-alsa-tsc2101.h
+ * 
+ * Alsa Driver for TSC2101 codec for OMAP platform boards.
+ *
+ * Based on former omap-aic23.h and tsc2101 OSS drivers.
+ * Copyright (C) 2004 Texas Instruments, Inc.
+ * 	Written by Nishanth Menon and Sriram Kannan
+ *
+ * Copyright (C) 2006 Instituto Nokia de Tecnologia - INdT - Manaus Brazil
+ *          Alsa modularization by Daniel Petrini (d.pensator@gmail.com)
+ * 
+ * Copyright (C) 2006 Mika Laitio <lamikr@cc.jyu.fi>
+ *
+ * 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; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#ifndef OMAP_ALSA_TSC2101_H_
+#define OMAP_ALSA_TSC2101_H_
+
+#include <linux/types.h>
+
+/* Define to set the tsc as the master w.r.t McBSP */
+#define TSC_MASTER
+
+#define NUMBER_SAMPLE_RATES_SUPPORTED	16
+
+/*
+ * AUDIO related MACROS
+ */
+#ifndef DEFAULT_BITPERSAMPLE
+#define DEFAULT_BITPERSAMPLE		16
+#endif
+
+#define DEFAULT_SAMPLE_RATE		44100
+#define CODEC_CLOCK 			12000000
+#define AUDIO_MCBSP        		OMAP_MCBSP1
+
+#define PAGE2_AUDIO_CODEC_REGISTERS	(2)
+
+struct tsc2101_samplerate_reg_info {
+	u16 sample_rate;
+	u8 divisor;
+	u8 fs_44kHz;	/* if 0 48 khz, if 1 44.1 khz fsref */
+};
+
+/*
+ * Defines codec specific functions pointers that can be used from the 
+ * common omap-alse base driver for all omap codecs. (tsc2101 and aic23)
+ */
+inline void tsc2101_configure(void);
+void tsc2101_set_samplerate(long rate);
+void tsc2101_clock_setup(void);
+int tsc2101_clock_on(void);
+int tsc2101_clock_off(void);
+int tsc2101_get_default_samplerate(void);
+
+#endif /*OMAP_ALSA_TSC2101_H_*/