V4L/DVB (12730): Add conexant cx25821 driver

GIT_BRANCH=devel
GIT_AUTHOR_DATE=1252851239
GIT_AUTHOR_NAME=Palash Bandyopadhyay
GIT_AUTHOR_EMAIL=Palash.Bandyopadhyay@conexant.com
Add conexant cx25821 driver release v106 of the Athena driver.
Signed-off-by: Palash Bandyopadhyay <palash.bandyopadhyay@conexant.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/staging/cx25821/Kconfig

+config VIDEO_CX25821
+	tristate "Conexant cx25821 support"
+	depends on DVB_CORE && VIDEO_DEV && PCI && I2C && INPUT
+	select I2C_ALGOBIT
+	select VIDEO_BTCX
+	select VIDEO_TVEEPROM
+	select VIDEO_IR
+	select VIDEOBUF_DVB
+	select VIDEOBUF_DMA_SG
+	select VIDEO_CX25840
+	select VIDEO_CX2341X
+	---help---
+	  This is a video4linux driver for Conexant 25821 based
+	  TV cards.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called cx25821
+	  
+config VIDEO_CX25821_ALSA
+	tristate "Conexant 25821 DMA audio support"
+	depends on VIDEO_CX25821 && SND && EXPERIMENTAL
+	select SND_PCM
+	---help---
+	  This is a video4linux driver for direct (DMA) audio on
+	  Conexant 25821 based capture cards using ALSA.
+
+	  It only works with boards with function 01 enabled.
+	  To check if your board supports, use lspci -n.
+	  If supported, you should see 14f1:8801 or 14f1:8811
+	  PCI device.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called cx25821-alsa.	  
+

drivers/staging/cx25821/Makefile

+cx25821-objs	:= cx25821-core.o cx25821-cards.o cx25821-i2c.o cx25821-gpio.o 				\
+				cx25821-medusa-video.o cx25821-video.o cx25821-video0.o cx25821-video1.o    \
+				cx25821-video2.o cx25821-video3.o cx25821-video4.o cx25821-video5.o         \
+				cx25821-video6.o cx25821-video7.o cx25821-vidups9.o cx25821-vidups10.o      \
+				cx25821-audups11.o cx25821-video-upstream.o cx25821-video-upstream-ch2.o 	\
+				cx25821-audio-upstream.o cx25821-videoioctl.o
+
+obj-$(CONFIG_VIDEO_CX25821) += cx25821.o
+obj-$(CONFIG_VIDEO_CX25821_ALSA) += cx25821-alsa.o
+
+EXTRA_CFLAGS += -Idrivers/media/video
+EXTRA_CFLAGS += -Idrivers/media/dvb/dvb-core
+EXTRA_CFLAGS += -Idrivers/media/dvb/frontends
+
+EXTRA_CFLAGS += $(extra-cflags-y) $(extra-cflags-m)

drivers/staging/cx25821/cx25821-audio-upstream.h

+/*
+ *  Driver for the Conexant CX25821 PCIe bridge
+ *
+ *  Copyright (C) 2009 Conexant Systems Inc. 
+ *  Authors  <hiep.huynh@conexant.com>, <shu.lin@conexant.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; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/mutex.h>
+#include <linux/workqueue.h>
+
+
+#define NUM_AUDIO_PROGS       8
+#define NUM_AUDIO_FRAMES      8
+#define END_OF_FILE           0
+#define IN_PROGRESS           1
+#define RESET_STATUS          -1
+#define FIFO_DISABLE          0
+#define FIFO_ENABLE           1
+#define NUM_NO_OPS            4
+
+
+#define RISC_READ_INSTRUCTION_SIZE      12
+#define RISC_JUMP_INSTRUCTION_SIZE      12
+#define RISC_WRITECR_INSTRUCTION_SIZE   16
+#define RISC_SYNC_INSTRUCTION_SIZE      4
+#define DWORD_SIZE                      4
+#define AUDIO_SYNC_LINE                 4
+
+
+#define LINES_PER_AUDIO_BUFFER      15
+#define AUDIO_LINE_SIZE             128
+#define AUDIO_DATA_BUF_SZ           (AUDIO_LINE_SIZE * LINES_PER_AUDIO_BUFFER)
+
+#define USE_RISC_NOOP_AUDIO   1
+
+#ifdef USE_RISC_NOOP_AUDIO                
+#define AUDIO_RISC_DMA_BUF_SIZE    ( LINES_PER_AUDIO_BUFFER*RISC_READ_INSTRUCTION_SIZE + RISC_WRITECR_INSTRUCTION_SIZE + NUM_NO_OPS*DWORD_SIZE + RISC_JUMP_INSTRUCTION_SIZE)
+#endif
+
+
+#ifndef USE_RISC_NOOP_AUDIO
+#define AUDIO_RISC_DMA_BUF_SIZE    ( LINES_PER_AUDIO_BUFFER*RISC_READ_INSTRUCTION_SIZE + RISC_WRITECR_INSTRUCTION_SIZE + RISC_JUMP_INSTRUCTION_SIZE)
+#endif
+
+static int _line_size;        
+char * _defaultAudioName = "/root/audioGOOD.wav";   
+    

drivers/staging/cx25821/cx25821-audio.h

+/*
+ *  Driver for the Conexant CX25821 PCIe bridge
+ *
+ *  Copyright (C) 2009 Conexant Systems Inc. 
+ *  Authors  <shu.lin@conexant.com>, <hiep.huynh@conexant.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; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __CX25821_AUDIO_H__
+#define __CX25821_AUDIO_H__
+
+
+#define USE_RISC_NOOP               1
+#define LINES_PER_BUFFER            15
+#define AUDIO_LINE_SIZE             128
+
+//Number of buffer programs to use at once.
+#define NUMBER_OF_PROGRAMS  8
+
+//Max size of the RISC program for a buffer. - worst case is 2 writes per line
+// Space is also added for the 4 no-op instructions added on the end.
+
+#ifndef USE_RISC_NOOP
+#define MAX_BUFFER_PROGRAM_SIZE     \
+    (2*LINES_PER_BUFFER*RISC_WRITE_INSTRUCTION_SIZE + RISC_WRITECR_INSTRUCTION_SIZE*4)
+#endif
+
+// MAE 12 July 2005 Try to use NOOP RISC instruction instead
+#ifdef USE_RISC_NOOP
+#define MAX_BUFFER_PROGRAM_SIZE     \
+    (2*LINES_PER_BUFFER*RISC_WRITE_INSTRUCTION_SIZE + RISC_NOOP_INSTRUCTION_SIZE*4)
+#endif
+
+
+//Sizes of various instructions in bytes.  Used when adding instructions.
+#define RISC_WRITE_INSTRUCTION_SIZE 12
+#define RISC_JUMP_INSTRUCTION_SIZE  12
+#define RISC_SKIP_INSTRUCTION_SIZE  4
+#define RISC_SYNC_INSTRUCTION_SIZE  4
+#define RISC_WRITECR_INSTRUCTION_SIZE  16
+#define RISC_NOOP_INSTRUCTION_SIZE 4
+
+#define MAX_AUDIO_DMA_BUFFER_SIZE (MAX_BUFFER_PROGRAM_SIZE * NUMBER_OF_PROGRAMS + RISC_SYNC_INSTRUCTION_SIZE)
+
+#endif
+

drivers/staging/cx25821/cx25821-biffuncs.h

+/*
+ *  Driver for the Conexant CX25821 PCIe bridge
+ *
+ *  Copyright (C) 2009 Conexant Systems Inc. 
+ *  Authors  <shu.lin@conexant.com>, <hiep.huynh@conexant.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; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _BITFUNCS_H
+#define _BITFUNCS_H
+
+#define SetBit(Bit)  (1 << Bit)
+
+inline u8 getBit(u32 sample, u8 index)
+{ 
+    return (u8) ((sample >> index) & 1);
+}
+
+inline u32 clearBitAtPos(u32 value, u8 bit)
+{
+	return value & ~(1 << bit);
+}
+
+inline u32 setBitAtPos(u32 sample, u8 bit)
+{
+	sample |= (1 << bit);
+    return sample;
+
+}
+
+#endif

drivers/staging/cx25821/cx25821-cards.c

+/*
+ *  Driver for the Conexant CX25821 PCIe bridge
+ *
+ *  Copyright (C) 2009 Conexant Systems Inc. 
+ *  Authors  <shu.lin@conexant.com>, <hiep.huynh@conexant.com>
+ *	Based on Steven Toth <stoth@linuxtv.org> cx23885 driver
+ *
+ *  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 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <media/cx25840.h>
+
+#include "cx25821.h"
+#include "tuner-xc2028.h"
+
+// board config info                                                  
+
+struct cx25821_board cx25821_boards[] = {
+	[UNKNOWN_BOARD] = {
+		.name		= "UNKNOWN/GENERIC",
+		// Ensure safe default for unknown boards 
+		.clk_freq       = 0,
+	},
+
+	[CX25821_BOARD] = {
+		.name		    = "CX25821",
+		.portb		    = CX25821_RAW,
+		.portc		    = CX25821_264,
+        .input[0].type  = CX25821_VMUX_COMPOSITE,
+	},	
+
+};
+
+const unsigned int cx25821_bcount = ARRAY_SIZE(cx25821_boards);
+
+struct cx25821_subid cx25821_subids[]={
+    {
+		.subvendor = 0x14f1,
+		.subdevice = 0x0920,
+		.card      = CX25821_BOARD,
+    },
+};
+
+
+void cx25821_card_setup(struct cx25821_dev *dev)
+{
+	static u8 eeprom[256];
+
+	if (dev->i2c_bus[0].i2c_rc == 0) 
+	{
+		dev->i2c_bus[0].i2c_client.addr = 0xa0 >> 1;
+		tveeprom_read(&dev->i2c_bus[0].i2c_client, eeprom, sizeof(eeprom));
+	}
+}
+

drivers/staging/cx25821/cx25821-gpio.c

+/*
+ *  Driver for the Conexant CX25821 PCIe bridge
+ *
+ *  Copyright (C) 2009 Conexant Systems Inc. 
+ *  Authors  <shu.lin@conexant.com>, <hiep.huynh@conexant.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; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "cx25821.h"
+
+
+/********************* GPIO stuffs *********************/
+void cx25821_set_gpiopin_direction( struct cx25821_dev *dev,
+                                    int    pin_number,
+                                    int    pin_logic_value)
+{
+    int  bit = pin_number;
+    u32 gpio_oe_reg = GPIO_LO_OE;
+	u32 gpio_register = 0;
+    u32 value = 0;
+	
+    // Check for valid pinNumber
+    if ( pin_number >= 47 )
+        return;
+
+
+    if ( pin_number > 31 )
+	{
+	    bit = pin_number - 31;
+	    gpio_oe_reg = GPIO_HI_OE;
+	}
+
+    // Here we will make sure that the GPIOs 0 and 1 are output. keep the rest as is
+    gpio_register = cx_read( gpio_oe_reg );
+	
+    if (pin_logic_value == 1)
+    {
+        value = gpio_register | Set_GPIO_Bit(bit) ;
+    }
+    else
+    {
+        value = gpio_register & Clear_GPIO_Bit(bit) ;
+    }
+
+    cx_write( gpio_oe_reg, value );
+}
+
+static void cx25821_set_gpiopin_logicvalue( struct cx25821_dev *dev,
+                                            int    pin_number,
+                                            int    pin_logic_value)
+{    
+    int bit      = pin_number;
+    u32 gpio_reg = GPIO_LO;
+	u32 value    = 0;
+	
+	
+	// Check for valid pinNumber
+    if (pin_number >= 47)
+        return;
+       
+    cx25821_set_gpiopin_direction(dev, pin_number, 0);	 // change to output direction
+
+
+    if ( pin_number > 31 )
+	{
+	    bit      = pin_number - 31;
+	    gpio_reg = GPIO_HI;
+	}
+
+    value = cx_read( gpio_reg );
+   
+   
+    if (pin_logic_value == 0)
+    {
+        value &= Clear_GPIO_Bit(bit);
+    }
+    else
+    {
+        value |= Set_GPIO_Bit(bit);
+    }
+
+    cx_write( gpio_reg, value);
+}
+
+void cx25821_gpio_init(struct cx25821_dev *dev)
+{
+	if( dev == NULL )
+	{
+	    return;
+	}
+		
+	switch (dev->board) 
+	{
+		case CX25821_BOARD_CONEXANT_ATHENA10:	
+		default:		
+                 //set GPIO 5 to select the path for Medusa/Athena
+			cx25821_set_gpiopin_logicvalue(dev, 5, 1);  
+			mdelay(20);
+			break;
+	}
+	
+}

drivers/staging/cx25821/cx25821-gpio.h

+
+void cx25821_gpio_init(struct athena_dev *dev);
+

drivers/staging/cx25821/cx25821-medusa-defines.h

+/*
+ *  Driver for the Conexant CX25821 PCIe bridge
+ *
+ *  Copyright (C) 2009 Conexant Systems Inc. 
+ *  Authors  <shu.lin@conexant.com>, <hiep.huynh@conexant.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; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _MEDUSA_DEF_H_
+#define _MEDUSA_DEF_H_
+
+// Video deocder that we supported
+#define VDEC_A		0
+#define VDEC_B		1
+#define VDEC_C		2
+#define VDEC_D		3
+#define VDEC_E		4
+#define VDEC_F		5
+#define VDEC_G		6
+#define VDEC_H		7
+
+//#define AUTO_SWITCH_BIT[]  = { 8, 9, 10, 11, 12, 13, 14, 15 };
+
+// The following bit position enables automatic source switching for decoder A-H.
+// Display index per camera.
+//#define VDEC_INDEX[] = {0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7};
+
+// Select input bit to video decoder A-H.
+//#define CH_SRC_SEL_BIT[] = {24, 25, 26, 27, 28, 29, 30, 31};
+
+// end of display sequence
+#define END_OF_SEQ					0xF;
+
+// registry string size
+#define MAX_REGISTRY_SZ					40;
+
+#endif