ALSA: lx6464es - driver for the digigram lx6464es interface

prototype of a driver for the digigram lx6464es 64 channel ethersound
interface.
Signed-off-by: Tim Blechmann <tim@klingt.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

include/linux/pci_ids.h

@@ -1005,6 +1005,7 @@
 #define PCI_DEVICE_ID_PLX_PCI200SYN	0x3196
 #define PCI_DEVICE_ID_PLX_9030          0x9030
 #define PCI_DEVICE_ID_PLX_9050		0x9050
+#define PCI_DEVICE_ID_PLX_9056		0x9056
 #define PCI_DEVICE_ID_PLX_9080		0x9080
 #define PCI_DEVICE_ID_PLX_GTEK_SERIAL2	0xa001
 
@@ -1847,6 +1848,10 @@
 #define PCI_SUBDEVICE_ID_HYPERCOPE_METRO	0x0107
 #define PCI_SUBDEVICE_ID_HYPERCOPE_CHAMP2	0x0108
 
+#define PCI_VENDOR_ID_DIGIGRAM		0x1369
+#define PCI_SUBDEVICE_ID_DIGIGRAM_LX6464ES_SERIAL_SUBSYSTEM	0xc001
+#define PCI_SUBDEVICE_ID_DIGIGRAM_LX6464ES_CAE_SERIAL_SUBSYSTEM	0xc002
+
 #define PCI_VENDOR_ID_KAWASAKI		0x136b
 #define PCI_DEVICE_ID_MCHIP_KL5A72002	0xff01
 

sound/pci/Kconfig

@@ -622,6 +622,16 @@ config SND_KORG1212
 	  To compile this driver as a module, choose M here: the module
 	  will be called snd-korg1212.
 
+config SND_LX6464ES
+	tristate "Digigram LX6464ES"
+	select SND_PCM
+	help
+	  Say Y here to include support for Digigram LX6464ES boards.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called snd-lx6464es.
+
+
 config SND_MAESTRO3
 	tristate "ESS Allegro/Maestro3"
 	select SND_AC97_CODEC

sound/pci/Makefile

@@ -62,6 +62,7 @@ obj-$(CONFIG_SND) += \
 	ca0106/ \
 	cs46xx/ \
 	cs5535audio/ \
+	lx6464es/ \
 	echoaudio/ \
 	emu10k1/ \
 	hda/ \

sound/pci/lx6464es/Makefile

+snd-lx6464es-objs := lx6464es.o lx_core.o
+obj-$(CONFIG_SND_LX6464ES) += snd-lx6464es.o

sound/pci/lx6464es/lx6464es.h

+/* -*- linux-c -*- *
+ *
+ * ALSA driver for the digigram lx6464es interface
+ *
+ * Copyright (c) 2009 Tim Blechmann <tim@klingt.org>
+ *
+ *
+ * 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; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifndef LX6464ES_H
+#define LX6464ES_H
+
+#include <linux/spinlock.h>
+#include <asm/atomic.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+
+#include "lx_core.h"
+
+#define LXP "LX6464ES: "
+
+enum {
+    ES_cmd_free         = 0,    /* no command executing */
+    ES_cmd_processing   = 1,	/* execution of a read/write command */
+    ES_read_pending     = 2,    /* a asynchron read command is pending */
+    ES_read_finishing   = 3,    /* a read command has finished waiting (set by
+				 * Interrupt or CancelIrp) */
+};
+
+enum lx_stream_status {
+	LX_STREAM_STATUS_FREE,
+/* 	LX_STREAM_STATUS_OPEN, */
+	LX_STREAM_STATUS_SCHEDULE_RUN,
+/* 	LX_STREAM_STATUS_STARTED, */
+	LX_STREAM_STATUS_RUNNING,
+	LX_STREAM_STATUS_SCHEDULE_STOP,
+/* 	LX_STREAM_STATUS_STOPPED, */
+/* 	LX_STREAM_STATUS_PAUSED */
+};
+
+
+struct lx_stream {
+	struct snd_pcm_substream  *stream;
+	snd_pcm_uframes_t          frame_pos;
+	enum lx_stream_status      status; /* free, open, running, draining
+					    * pause */
+	int                        is_capture:1;
+};
+
+
+struct lx6464es {
+	struct snd_card        *card;
+	struct pci_dev         *pci;
+	int			irq;
+
+	spinlock_t		lock;        /* interrupt spinlock */
+	struct mutex            setup_mutex; /* mutex used in hw_params, open
+					      * and close */
+
+	struct tasklet_struct   trigger_tasklet; /* trigger tasklet */
+	struct tasklet_struct   tasklet_capture;
+	struct tasklet_struct   tasklet_playback;
+
+	/* ports */
+	unsigned long		port_plx;	   /* io port (size=256) */
+	void __iomem           *port_plx_remapped; /* remapped plx port */
+	void __iomem           *port_dsp_bar;      /* memory port (32-bit,
+						    * non-prefetchable,
+						    * size=8K) */
+
+	/* messaging */
+	spinlock_t		msg_lock;          /* message spinlock */
+	atomic_t	        send_message_locked;
+	struct lx_rmh           rmh;
+
+	/* configuration */
+	uint			freq_ratio : 2;
+	uint                    playback_mute : 1;
+	uint                    hardware_running[2];
+	u32                     board_sample_rate; /* sample rate read from
+						    * board */
+	u32                     sample_rate;	   /* our sample rate */
+	u16                     pcm_granularity;   /* board blocksize */
+
+	/* dma */
+	struct snd_dma_buffer   capture_dma_buf;
+	struct snd_dma_buffer   playback_dma_buf;
+
+	/* pcm */
+	struct snd_pcm         *pcm;
+
+	/* streams */
+	struct lx_stream        capture_stream;
+	struct lx_stream        playback_stream;
+};
+
+
+#endif /* LX6464ES_H */

sound/pci/lx6464es/lx_core.h

+/* -*- linux-c -*- *
+ *
+ * ALSA driver for the digigram lx6464es interface
+ * low-level interface
+ *
+ * Copyright (c) 2009 Tim Blechmann <tim@klingt.org>
+ *
+ * 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; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifndef LX_CORE_H
+#define LX_CORE_H
+
+#include <linux/interrupt.h>
+
+#include "lx_defs.h"
+
+#define REG_CRM_NUMBER		12
+
+struct lx6464es;
+
+/* low-level register access */
+
+/* dsp register access */
+enum {
+	eReg_BASE,
+	eReg_CSM,
+	eReg_CRM1,
+	eReg_CRM2,
+	eReg_CRM3,
+	eReg_CRM4,
+	eReg_CRM5,
+	eReg_CRM6,
+	eReg_CRM7,
+	eReg_CRM8,
+	eReg_CRM9,
+	eReg_CRM10,
+	eReg_CRM11,
+	eReg_CRM12,
+
+	eReg_ICR,
+	eReg_CVR,
+	eReg_ISR,
+	eReg_RXHTXH,
+	eReg_RXMTXM,
+	eReg_RHLTXL,
+	eReg_RESETDSP,
+
+	eReg_CSUF,
+	eReg_CSES,
+	eReg_CRESMSB,
+	eReg_CRESLSB,
+	eReg_ADMACESMSB,
+	eReg_ADMACESLSB,
+	eReg_CONFES,
+
+	eMaxPortLx
+};
+
+unsigned long lx_dsp_reg_read(struct lx6464es *chip, int port);
+void lx_dsp_reg_readbuf(struct lx6464es *chip, int port, u32 *data, u32 len);
+void lx_dsp_reg_write(struct lx6464es *chip, int port, unsigned data);
+void lx_dsp_reg_writebuf(struct lx6464es *chip, int port, const u32 *data,
+			 u32 len);
+
+/* plx register access */
+enum {
+    ePLX_PCICR,
+
+    ePLX_MBOX0,
+    ePLX_MBOX1,
+    ePLX_MBOX2,
+    ePLX_MBOX3,
+    ePLX_MBOX4,
+    ePLX_MBOX5,
+    ePLX_MBOX6,
+    ePLX_MBOX7,
+
+    ePLX_L2PCIDB,
+    ePLX_IRQCS,
+    ePLX_CHIPSC,
+
+    eMaxPort
+};
+
+unsigned long lx_plx_reg_read(struct lx6464es *chip, int port);
+void lx_plx_reg_write(struct lx6464es *chip, int port, u32 data);
+
+/* rhm */
+struct lx_rmh {
+	u16	cmd_len;	/* length of the command to send (WORDs) */
+	u16	stat_len;	/* length of the status received (WORDs) */
+	u16	dsp_stat;	/* status type, RMP_SSIZE_XXX */
+	u16	cmd_idx;	/* index of the command */
+	u32	cmd[REG_CRM_NUMBER];
+	u32	stat[REG_CRM_NUMBER];
+};
+
+
+/* low-level dsp access */
+int __devinit lx_dsp_get_version(struct lx6464es *chip, u32 *rdsp_version);
+int lx_dsp_get_clock_frequency(struct lx6464es *chip, u32 *rfreq);
+int lx_dsp_set_granularity(struct lx6464es *chip, u32 gran);
+int lx_dsp_read_async_events(struct lx6464es *chip, u32 *data);
+int lx_dsp_get_mac(struct lx6464es *chip, u8 *mac_address);
+
+
+/* low-level pipe handling */
+int lx_pipe_allocate(struct lx6464es *chip, u32 pipe, int is_capture,
+		     int channels);
+int lx_pipe_release(struct lx6464es *chip, u32 pipe, int is_capture);
+int lx_pipe_sample_count(struct lx6464es *chip, u32 pipe, int is_capture,
+			 u64 *rsample_count);
+int lx_pipe_state(struct lx6464es *chip, u32 pipe, int is_capture, u16 *rstate);
+int lx_pipe_stop(struct lx6464es *chip, u32 pipe, int is_capture);
+int lx_pipe_start(struct lx6464es *chip, u32 pipe, int is_capture);
+int lx_pipe_pause(struct lx6464es *chip, u32 pipe, int is_capture);
+
+int lx_pipe_wait_for_start(struct lx6464es *chip, u32 pipe, int is_capture);
+int lx_pipe_wait_for_idle(struct lx6464es *chip, u32 pipe, int is_capture);
+
+/* low-level stream handling */
+int lx_stream_set_format(struct lx6464es *chip, struct snd_pcm_runtime *runtime,
+			 u32 pipe, int is_capture);
+int lx_stream_state(struct lx6464es *chip, u32 pipe, int is_capture,
+		    int *rstate);
+int lx_stream_sample_position(struct lx6464es *chip, u32 pipe, int is_capture,
+			      u64 *r_bytepos);
+
+int lx_stream_set_state(struct lx6464es *chip, u32 pipe,
+			int is_capture, enum stream_state_t state);
+
+static inline int lx_stream_start(struct lx6464es *chip, u32 pipe,
+				  int is_capture)
+{
+	snd_printdd("->lx_stream_start\n");
+	return lx_stream_set_state(chip, pipe, is_capture, SSTATE_RUN);
+}
+
+static inline int lx_stream_pause(struct lx6464es *chip, u32 pipe,
+				  int is_capture)
+{
+	snd_printdd("->lx_stream_pause\n");
+	return lx_stream_set_state(chip, pipe, is_capture, SSTATE_PAUSE);
+}
+
+static inline int lx_stream_stop(struct lx6464es *chip, u32 pipe,
+				 int is_capture)
+{
+	snd_printdd("->lx_stream_stop\n");
+	return lx_stream_set_state(chip, pipe, is_capture, SSTATE_STOP);
+}
+
+/* low-level buffer handling */
+int lx_buffer_ask(struct lx6464es *chip, u32 pipe, int is_capture,
+		  u32 *r_needed, u32 *r_freed, u32 *size_array);
+int lx_buffer_give(struct lx6464es *chip, u32 pipe, int is_capture,
+		   u32 buffer_size, u32 buf_address_lo, u32 buf_address_hi,
+		   u32 *r_buffer_index);
+int lx_buffer_free(struct lx6464es *chip, u32 pipe, int is_capture,
+		   u32 *r_buffer_size);
+int lx_buffer_cancel(struct lx6464es *chip, u32 pipe, int is_capture,
+		     u32 buffer_index);
+
+/* low-level gain/peak handling */
+int lx_level_unmute(struct lx6464es *chip, int is_capture, int unmute);
+int lx_level_peaks(struct lx6464es *chip, int is_capture, int channels,
+		   u32 *r_levels);
+
+
+/* interrupt handling */
+irqreturn_t lx_interrupt(int irq, void *dev_id);
+void lx_irq_enable(struct lx6464es *chip);
+void lx_irq_disable(struct lx6464es *chip);
+
+void lx_tasklet_capture(unsigned long data);
+void lx_tasklet_playback(unsigned long data);
+
+
+/* Stream Format Header Defines (for LIN and IEEE754) */
+#define HEADER_FMT_BASE		HEADER_FMT_BASE_LIN
+#define HEADER_FMT_BASE_LIN	0xFED00000
+#define HEADER_FMT_BASE_FLOAT	0xFAD00000
+#define HEADER_FMT_MONO		0x00000080 /* bit 23 in header_lo. WARNING: old
+					    * bit 22 is ignored in float
+					    * format */
+#define HEADER_FMT_INTEL	0x00008000
+#define HEADER_FMT_16BITS	0x00002000
+#define HEADER_FMT_24BITS	0x00004000
+#define HEADER_FMT_UPTO11	0x00000200 /* frequency is less or equ. to 11k.
+					    * */
+#define HEADER_FMT_UPTO32	0x00000100 /* frequency is over 11k and less
+					    * then 32k.*/
+
+
+#define BIT_FMP_HEADER          23
+#define BIT_FMP_SD              22
+#define BIT_FMP_MULTICHANNEL    19
+
+#define START_STATE             1
+#define PAUSE_STATE             0
+
+
+
+
+
+/* from PcxAll_e.h */
+/* Start/Pause condition for pipes (PCXStartPipe, PCXPausePipe) */
+#define START_PAUSE_IMMEDIATE           0
+#define START_PAUSE_ON_SYNCHRO          1
+#define START_PAUSE_ON_TIME_CODE        2
+
+
+/* Pipe / Stream state */
+#define START_STATE             1
+#define PAUSE_STATE             0
+
+static inline void unpack_pointer(dma_addr_t ptr, u32 *r_low, u32 *r_high)
+{
+	*r_low = (u32)(ptr & 0xffffffff);
+#if BITS_PER_LONG == 32
+	*r_high = 0;
+#else
+	*r_high = (u32)((u64)ptr>>32);
+#endif
+}
+
+#endif /* LX_CORE_H */