renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-22 12:14:01 +08:00
Code
7d12e780e0
linux-next/sound/sparc/cs4231.c
David Howells 7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00

2325 lines
65 KiB
C
Raw Blame History

/*
* Driver for CS4231 sound chips found on Sparcs.
* Copyright (C) 2002 David S. Miller <davem@redhat.com>
*
* Based entirely upon drivers/sbus/audio/cs4231.c which is:
* Copyright (C) 1996, 1997, 1998, 1998 Derrick J Brashear (shadow@andrew.cmu.edu)
* and also sound/isa/cs423x/cs4231_lib.c which is:
* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/moduleparam.h>
#include <sound/driver.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/info.h>
#include <sound/control.h>
#include <sound/timer.h>
#include <sound/initval.h>
#include <sound/pcm_params.h>
#include <asm/io.h>
#include <asm/irq.h>
#ifdef CONFIG_SBUS
#define SBUS_SUPPORT
#endif
#ifdef SBUS_SUPPORT
#include <asm/sbus.h>
#endif
#if defined(CONFIG_PCI) && defined(CONFIG_SPARC64)
#define EBUS_SUPPORT
#endif
#ifdef EBUS_SUPPORT
#include <linux/pci.h>
#include <asm/ebus.h>
#endif
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for Sun CS4231 soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for Sun CS4231 soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable Sun CS4231 soundcard.");
MODULE_AUTHOR("Jaroslav Kysela, Derrick J. Brashear and David S. Miller");
MODULE_DESCRIPTION("Sun CS4231");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Sun,CS4231}}");
#ifdef SBUS_SUPPORT
struct sbus_dma_info {
spinlock_t lock;
int dir;
void __iomem *regs;
};
#endif
struct snd_cs4231;
struct cs4231_dma_control {
void (*prepare)(struct cs4231_dma_control *dma_cont, int dir);
void (*enable)(struct cs4231_dma_control *dma_cont, int on);
int (*request)(struct cs4231_dma_control *dma_cont, dma_addr_t bus_addr, size_t len);
unsigned int (*address)(struct cs4231_dma_control *dma_cont);
void (*reset)(struct snd_cs4231 *chip);
void (*preallocate)(struct snd_cs4231 *chip, struct snd_pcm *pcm);
#ifdef EBUS_SUPPORT
struct ebus_dma_info ebus_info;
#endif
#ifdef SBUS_SUPPORT
struct sbus_dma_info sbus_info;
#endif
};
struct snd_cs4231 {
spinlock_t lock;
void __iomem *port;
struct cs4231_dma_control p_dma;
struct cs4231_dma_control c_dma;
u32 flags;
#define CS4231_FLAG_EBUS 0x00000001
#define CS4231_FLAG_PLAYBACK 0x00000002
#define CS4231_FLAG_CAPTURE 0x00000004
struct snd_card *card;
struct snd_pcm *pcm;
struct snd_pcm_substream *playback_substream;
unsigned int p_periods_sent;
struct snd_pcm_substream *capture_substream;
unsigned int c_periods_sent;
struct snd_timer *timer;
unsigned short mode;
#define CS4231_MODE_NONE 0x0000
#define CS4231_MODE_PLAY 0x0001
#define CS4231_MODE_RECORD 0x0002
#define CS4231_MODE_TIMER 0x0004
#define CS4231_MODE_OPEN (CS4231_MODE_PLAY|CS4231_MODE_RECORD|CS4231_MODE_TIMER)
unsigned char image[32]; /* registers image */
int mce_bit;
int calibrate_mute;
struct mutex mce_mutex;
struct mutex open_mutex;
union {
#ifdef SBUS_SUPPORT
struct sbus_dev *sdev;
#endif
#ifdef EBUS_SUPPORT
struct pci_dev *pdev;
#endif
} dev_u;
unsigned int irq[2];
unsigned int regs_size;
struct snd_cs4231 *next;
};
static struct snd_cs4231 *cs4231_list;
/* Eventually we can use sound/isa/cs423x/cs4231_lib.c directly, but for
* now.... -DaveM
*/
/* IO ports */
#define CS4231P(chip, x) ((chip)->port + c_d_c_CS4231##x)
/* XXX offsets are different than PC ISA chips... */
#define c_d_c_CS4231REGSEL 0x0
#define c_d_c_CS4231REG 0x4
#define c_d_c_CS4231STATUS 0x8
#define c_d_c_CS4231PIO 0xc
/* codec registers */
#define CS4231_LEFT_INPUT 0x00 /* left input control */
#define CS4231_RIGHT_INPUT 0x01 /* right input control */
#define CS4231_AUX1_LEFT_INPUT 0x02 /* left AUX1 input control */
#define CS4231_AUX1_RIGHT_INPUT 0x03 /* right AUX1 input control */
#define CS4231_AUX2_LEFT_INPUT 0x04 /* left AUX2 input control */
#define CS4231_AUX2_RIGHT_INPUT 0x05 /* right AUX2 input control */
#define CS4231_LEFT_OUTPUT 0x06 /* left output control register */
#define CS4231_RIGHT_OUTPUT 0x07 /* right output control register */
#define CS4231_PLAYBK_FORMAT 0x08 /* clock and data format - playback - bits 7-0 MCE */
#define CS4231_IFACE_CTRL 0x09 /* interface control - bits 7-2 MCE */
#define CS4231_PIN_CTRL 0x0a /* pin control */
#define CS4231_TEST_INIT 0x0b /* test and initialization */
#define CS4231_MISC_INFO 0x0c /* miscellaneaous information */
#define CS4231_LOOPBACK 0x0d /* loopback control */
#define CS4231_PLY_UPR_CNT 0x0e /* playback upper base count */
#define CS4231_PLY_LWR_CNT 0x0f /* playback lower base count */
#define CS4231_ALT_FEATURE_1 0x10 /* alternate #1 feature enable */
#define CS4231_ALT_FEATURE_2 0x11 /* alternate #2 feature enable */
#define CS4231_LEFT_LINE_IN 0x12 /* left line input control */
#define CS4231_RIGHT_LINE_IN 0x13 /* right line input control */
#define CS4231_TIMER_LOW 0x14 /* timer low byte */
#define CS4231_TIMER_HIGH 0x15 /* timer high byte */
#define CS4231_LEFT_MIC_INPUT 0x16 /* left MIC input control register (InterWave only) */
#define CS4231_RIGHT_MIC_INPUT 0x17 /* right MIC input control register (InterWave only) */
#define CS4236_EXT_REG 0x17 /* extended register access */
#define CS4231_IRQ_STATUS 0x18 /* irq status register */
#define CS4231_LINE_LEFT_OUTPUT 0x19 /* left line output control register (InterWave only) */
#define CS4231_VERSION 0x19 /* CS4231(A) - version values */
#define CS4231_MONO_CTRL 0x1a /* mono input/output control */
#define CS4231_LINE_RIGHT_OUTPUT 0x1b /* right line output control register (InterWave only) */
#define CS4235_LEFT_MASTER 0x1b /* left master output control */
#define CS4231_REC_FORMAT 0x1c /* clock and data format - record - bits 7-0 MCE */
#define CS4231_PLY_VAR_FREQ 0x1d /* playback variable frequency */
#define CS4235_RIGHT_MASTER 0x1d /* right master output control */
#define CS4231_REC_UPR_CNT 0x1e /* record upper count */
#define CS4231_REC_LWR_CNT 0x1f /* record lower count */
/* definitions for codec register select port - CODECP( REGSEL ) */
#define CS4231_INIT 0x80 /* CODEC is initializing */
#define CS4231_MCE 0x40 /* mode change enable */
#define CS4231_TRD 0x20 /* transfer request disable */
/* definitions for codec status register - CODECP( STATUS ) */
#define CS4231_GLOBALIRQ 0x01 /* IRQ is active */
/* definitions for codec irq status - CS4231_IRQ_STATUS */
#define CS4231_PLAYBACK_IRQ 0x10
#define CS4231_RECORD_IRQ 0x20
#define CS4231_TIMER_IRQ 0x40
#define CS4231_ALL_IRQS 0x70
#define CS4231_REC_UNDERRUN 0x08
#define CS4231_REC_OVERRUN 0x04
#define CS4231_PLY_OVERRUN 0x02
#define CS4231_PLY_UNDERRUN 0x01
/* definitions for CS4231_LEFT_INPUT and CS4231_RIGHT_INPUT registers */
#define CS4231_ENABLE_MIC_GAIN 0x20
#define CS4231_MIXS_LINE 0x00
#define CS4231_MIXS_AUX1 0x40
#define CS4231_MIXS_MIC 0x80
#define CS4231_MIXS_ALL 0xc0
/* definitions for clock and data format register - CS4231_PLAYBK_FORMAT */
#define CS4231_LINEAR_8 0x00 /* 8-bit unsigned data */
#define CS4231_ALAW_8 0x60 /* 8-bit A-law companded */
#define CS4231_ULAW_8 0x20 /* 8-bit U-law companded */
#define CS4231_LINEAR_16 0x40 /* 16-bit twos complement data - little endian */
#define CS4231_LINEAR_16_BIG 0xc0 /* 16-bit twos complement data - big endian */
#define CS4231_ADPCM_16 0xa0 /* 16-bit ADPCM */
#define CS4231_STEREO 0x10 /* stereo mode */
/* bits 3-1 define frequency divisor */
#define CS4231_XTAL1 0x00 /* 24.576 crystal */
#define CS4231_XTAL2 0x01 /* 16.9344 crystal */
/* definitions for interface control register - CS4231_IFACE_CTRL */
#define CS4231_RECORD_PIO 0x80 /* record PIO enable */
#define CS4231_PLAYBACK_PIO 0x40 /* playback PIO enable */
#define CS4231_CALIB_MODE 0x18 /* calibration mode bits */
#define CS4231_AUTOCALIB 0x08 /* auto calibrate */
#define CS4231_SINGLE_DMA 0x04 /* use single DMA channel */
#define CS4231_RECORD_ENABLE 0x02 /* record enable */
#define CS4231_PLAYBACK_ENABLE 0x01 /* playback enable */
/* definitions for pin control register - CS4231_PIN_CTRL */
#define CS4231_IRQ_ENABLE 0x02 /* enable IRQ */
#define CS4231_XCTL1 0x40 /* external control #1 */
#define CS4231_XCTL0 0x80 /* external control #0 */
/* definitions for test and init register - CS4231_TEST_INIT */
#define CS4231_CALIB_IN_PROGRESS 0x20 /* auto calibrate in progress */
#define CS4231_DMA_REQUEST 0x10 /* DMA request in progress */
/* definitions for misc control register - CS4231_MISC_INFO */
#define CS4231_MODE2 0x40 /* MODE 2 */
#define CS4231_IW_MODE3 0x6c /* MODE 3 - InterWave enhanced mode */
#define CS4231_4236_MODE3 0xe0 /* MODE 3 - CS4236+ enhanced mode */
/* definitions for alternate feature 1 register - CS4231_ALT_FEATURE_1 */
#define CS4231_DACZ 0x01 /* zero DAC when underrun */
#define CS4231_TIMER_ENABLE 0x40 /* codec timer enable */
#define CS4231_OLB 0x80 /* output level bit */
/* SBUS DMA register defines. */
#define APCCSR 0x10UL /* APC DMA CSR */
#define APCCVA 0x20UL /* APC Capture DMA Address */
#define APCCC 0x24UL /* APC Capture Count */
#define APCCNVA 0x28UL /* APC Capture DMA Next Address */
#define APCCNC 0x2cUL /* APC Capture Next Count */
#define APCPVA 0x30UL /* APC Play DMA Address */
#define APCPC 0x34UL /* APC Play Count */
#define APCPNVA 0x38UL /* APC Play DMA Next Address */
#define APCPNC 0x3cUL /* APC Play Next Count */
/* Defines for SBUS DMA-routines */
#define APCVA 0x0UL /* APC DMA Address */
#define APCC 0x4UL /* APC Count */
#define APCNVA 0x8UL /* APC DMA Next Address */
#define APCNC 0xcUL /* APC Next Count */
#define APC_PLAY 0x30UL /* Play registers start at 0x30 */
#define APC_RECORD 0x20UL /* Record registers start at 0x20 */
/* APCCSR bits */
#define APC_INT_PENDING 0x800000 /* Interrupt Pending */
#define APC_PLAY_INT 0x400000 /* Playback interrupt */
#define APC_CAPT_INT 0x200000 /* Capture interrupt */
#define APC_GENL_INT 0x100000 /* General interrupt */
#define APC_XINT_ENA 0x80000 /* General ext int. enable */
#define APC_XINT_PLAY 0x40000 /* Playback ext intr */
#define APC_XINT_CAPT 0x20000 /* Capture ext intr */
#define APC_XINT_GENL 0x10000 /* Error ext intr */
#define APC_XINT_EMPT 0x8000 /* Pipe empty interrupt (0 write to pva) */
#define APC_XINT_PEMP 0x4000 /* Play pipe empty (pva and pnva not set) */
#define APC_XINT_PNVA 0x2000 /* Playback NVA dirty */
#define APC_XINT_PENA 0x1000 /* play pipe empty Int enable */
#define APC_XINT_COVF 0x800 /* Cap data dropped on floor */
#define APC_XINT_CNVA 0x400 /* Capture NVA dirty */
#define APC_XINT_CEMP 0x200 /* Capture pipe empty (cva and cnva not set) */
#define APC_XINT_CENA 0x100 /* Cap. pipe empty int enable */
#define APC_PPAUSE 0x80 /* Pause the play DMA */
#define APC_CPAUSE 0x40 /* Pause the capture DMA */
#define APC_CDC_RESET 0x20 /* CODEC RESET */
#define APC_PDMA_READY 0x08 /* Play DMA Go */
#define APC_CDMA_READY 0x04 /* Capture DMA Go */
#define APC_CHIP_RESET 0x01 /* Reset the chip */
/* EBUS DMA register offsets */
#define EBDMA_CSR 0x00UL /* Control/Status */
#define EBDMA_ADDR 0x04UL /* DMA Address */
#define EBDMA_COUNT 0x08UL /* DMA Count */
/*
* Some variables
*/
static unsigned char freq_bits[14] = {
/* 5510 */ 0x00 | CS4231_XTAL2,
/* 6620 */ 0x0E | CS4231_XTAL2,
/* 8000 */ 0x00 | CS4231_XTAL1,
/* 9600 */ 0x0E | CS4231_XTAL1,
/* 11025 */ 0x02 | CS4231_XTAL2,
/* 16000 */ 0x02 | CS4231_XTAL1,
/* 18900 */ 0x04 | CS4231_XTAL2,
/* 22050 */ 0x06 | CS4231_XTAL2,
/* 27042 */ 0x04 | CS4231_XTAL1,
/* 32000 */ 0x06 | CS4231_XTAL1,
/* 33075 */ 0x0C | CS4231_XTAL2,
/* 37800 */ 0x08 | CS4231_XTAL2,
/* 44100 */ 0x0A | CS4231_XTAL2,
/* 48000 */ 0x0C | CS4231_XTAL1
};
static unsigned int rates[14] = {
5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
27042, 32000, 33075, 37800, 44100, 48000
};
static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
.count = 14,
.list = rates,
};
static int snd_cs4231_xrate(struct snd_pcm_runtime *runtime)
{
return snd_pcm_hw_constraint_list(runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,
&hw_constraints_rates);
}
static unsigned char snd_cs4231_original_image[32] =
{
0x00, /* 00/00 - lic */
0x00, /* 01/01 - ric */
0x9f, /* 02/02 - la1ic */
0x9f, /* 03/03 - ra1ic */
0x9f, /* 04/04 - la2ic */
0x9f, /* 05/05 - ra2ic */
0xbf, /* 06/06 - loc */
0xbf, /* 07/07 - roc */
0x20, /* 08/08 - pdfr */
CS4231_AUTOCALIB, /* 09/09 - ic */
0x00, /* 0a/10 - pc */
0x00, /* 0b/11 - ti */
CS4231_MODE2, /* 0c/12 - mi */
0x00, /* 0d/13 - lbc */
0x00, /* 0e/14 - pbru */
0x00, /* 0f/15 - pbrl */
0x80, /* 10/16 - afei */
0x01, /* 11/17 - afeii */
0x9f, /* 12/18 - llic */
0x9f, /* 13/19 - rlic */
0x00, /* 14/20 - tlb */
0x00, /* 15/21 - thb */
0x00, /* 16/22 - la3mic/reserved */
0x00, /* 17/23 - ra3mic/reserved */
0x00, /* 18/24 - afs */
0x00, /* 19/25 - lamoc/version */
0x00, /* 1a/26 - mioc */
0x00, /* 1b/27 - ramoc/reserved */
0x20, /* 1c/28 - cdfr */
0x00, /* 1d/29 - res4 */
0x00, /* 1e/30 - cbru */
0x00, /* 1f/31 - cbrl */
};
static u8 __cs4231_readb(struct snd_cs4231 *cp, void __iomem *reg_addr)
{
#ifdef EBUS_SUPPORT
if (cp->flags & CS4231_FLAG_EBUS) {
return readb(reg_addr);
} else {
#endif
#ifdef SBUS_SUPPORT
return sbus_readb(reg_addr);
#endif
#ifdef EBUS_SUPPORT
}
#endif
}
static void __cs4231_writeb(struct snd_cs4231 *cp, u8 val, void __iomem *reg_addr)
{
#ifdef EBUS_SUPPORT
if (cp->flags & CS4231_FLAG_EBUS) {
return writeb(val, reg_addr);
} else {
#endif
#ifdef SBUS_SUPPORT
return sbus_writeb(val, reg_addr);
#endif
#ifdef EBUS_SUPPORT
}
#endif
}
/*
* Basic I/O functions
*/
static void snd_cs4231_outm(struct snd_cs4231 *chip, unsigned char reg,
unsigned char mask, unsigned char value)
{
int timeout;
unsigned char tmp;
for (timeout = 250;
timeout > 0 && (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT);
timeout--)
udelay(100);
#ifdef CONFIG_SND_DEBUG
if (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT)
snd_printdd("outm: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
#endif
if (chip->calibrate_mute) {
chip->image[reg] &= mask;
chip->image[reg] |= value;
} else {
__cs4231_writeb(chip, chip->mce_bit | reg, CS4231P(chip, REGSEL));
mb();
tmp = (chip->image[reg] & mask) | value;
__cs4231_writeb(chip, tmp, CS4231P(chip, REG));
chip->image[reg] = tmp;
mb();
}
}
static void snd_cs4231_dout(struct snd_cs4231 *chip, unsigned char reg, unsigned char value)
{
int timeout;
for (timeout = 250;
timeout > 0 && (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT);
timeout--)
udelay(100);
#ifdef CONFIG_SND_DEBUG
if (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT)
snd_printdd("out: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
#endif
__cs4231_writeb(chip, chip->mce_bit | reg, CS4231P(chip, REGSEL));
__cs4231_writeb(chip, value, CS4231P(chip, REG));
mb();
}
static void snd_cs4231_out(struct snd_cs4231 *chip, unsigned char reg, unsigned char value)
{
int timeout;
for (timeout = 250;
timeout > 0 && (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT);
timeout--)
udelay(100);
#ifdef CONFIG_SND_DEBUG
if (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT)
snd_printdd("out: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
#endif
__cs4231_writeb(chip, chip->mce_bit | reg, CS4231P(chip, REGSEL));
__cs4231_writeb(chip, value, CS4231P(chip, REG));
chip->image[reg] = value;
mb();
}
static unsigned char snd_cs4231_in(struct snd_cs4231 *chip, unsigned char reg)
{
int timeout;
unsigned char ret;
for (timeout = 250;
timeout > 0 && (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT);
timeout--)
udelay(100);
#ifdef CONFIG_SND_DEBUG
if (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT)
snd_printdd("in: auto calibration time out - reg = 0x%x\n", reg);
#endif
__cs4231_writeb(chip, chip->mce_bit | reg, CS4231P(chip, REGSEL));
mb();
ret = __cs4231_readb(chip, CS4231P(chip, REG));
return ret;
}
/*
* CS4231 detection / MCE routines
*/
static void snd_cs4231_busy_wait(struct snd_cs4231 *chip)
{
int timeout;
/* huh.. looks like this sequence is proper for CS4231A chip (GUS MAX) */
for (timeout = 5; timeout > 0; timeout--)
__cs4231_readb(chip, CS4231P(chip, REGSEL));
/* end of cleanup sequence */
for (timeout = 500;
timeout > 0 && (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT);
timeout--)
udelay(1000);
}
static void snd_cs4231_mce_up(struct snd_cs4231 *chip)
{
unsigned long flags;
int timeout;
spin_lock_irqsave(&chip->lock, flags);
for (timeout = 250; timeout > 0 && (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT); timeout--)
udelay(100);
#ifdef CONFIG_SND_DEBUG
if (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT)
snd_printdd("mce_up - auto calibration time out (0)\n");
#endif
chip->mce_bit |= CS4231_MCE;
timeout = __cs4231_readb(chip, CS4231P(chip, REGSEL));
if (timeout == 0x80)
snd_printdd("mce_up [%p]: serious init problem - codec still busy\n", chip->port);
if (!(timeout & CS4231_MCE))
__cs4231_writeb(chip, chip->mce_bit | (timeout & 0x1f), CS4231P(chip, REGSEL));
spin_unlock_irqrestore(&chip->lock, flags);
}
static void snd_cs4231_mce_down(struct snd_cs4231 *chip)
{
unsigned long flags;
int timeout;
spin_lock_irqsave(&chip->lock, flags);
snd_cs4231_busy_wait(chip);
#ifdef CONFIG_SND_DEBUG
if (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT)
snd_printdd("mce_down [%p] - auto calibration time out (0)\n", CS4231P(chip, REGSEL));
#endif
chip->mce_bit &= ~CS4231_MCE;
timeout = __cs4231_readb(chip, CS4231P(chip, REGSEL));
__cs4231_writeb(chip, chip->mce_bit | (timeout & 0x1f), CS4231P(chip, REGSEL));
if (timeout == 0x80)
snd_printdd("mce_down [%p]: serious init problem - codec still busy\n", chip->port);
if ((timeout & CS4231_MCE) == 0) {
spin_unlock_irqrestore(&chip->lock, flags);
return;
}
snd_cs4231_busy_wait(chip);
/* calibration process */
for (timeout = 500; timeout > 0 && (snd_cs4231_in(chip, CS4231_TEST_INIT) & CS4231_CALIB_IN_PROGRESS) == 0; timeout--)
udelay(100);
if ((snd_cs4231_in(chip, CS4231_TEST_INIT) & CS4231_CALIB_IN_PROGRESS) == 0) {
snd_printd("cs4231_mce_down - auto calibration time out (1)\n");
spin_unlock_irqrestore(&chip->lock, flags);
return;
}
/* in 10ms increments, check condition, up to 250ms */
timeout = 25;
while (snd_cs4231_in(chip, CS4231_TEST_INIT) & CS4231_CALIB_IN_PROGRESS) {
spin_unlock_irqrestore(&chip->lock, flags);
if (--timeout < 0) {
snd_printk("mce_down - auto calibration time out (2)\n");
return;
}
msleep(10);
spin_lock_irqsave(&chip->lock, flags);
}
/* in 10ms increments, check condition, up to 100ms */
timeout = 10;
while (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT) {
spin_unlock_irqrestore(&chip->lock, flags);
if (--timeout < 0) {
snd_printk("mce_down - auto calibration time out (3)\n");
return;
}
msleep(10);
spin_lock_irqsave(&chip->lock, flags);
}
spin_unlock_irqrestore(&chip->lock, flags);
}
static void snd_cs4231_advance_dma(struct cs4231_dma_control *dma_cont,
struct snd_pcm_substream *substream,
unsigned int *periods_sent)
{
struct snd_pcm_runtime *runtime = substream->runtime;
while (1) {
unsigned int period_size = snd_pcm_lib_period_bytes(substream);
unsigned int offset = period_size * (*periods_sent);
BUG_ON(period_size >= (1 << 24));
if (dma_cont->request(dma_cont, runtime->dma_addr + offset, period_size))
return;
(*periods_sent) = ((*periods_sent) + 1) % runtime->periods;
}
}
static void cs4231_dma_trigger(struct snd_pcm_substream *substream,
unsigned int what, int on)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
struct cs4231_dma_control *dma_cont;
if (what & CS4231_PLAYBACK_ENABLE) {
dma_cont = &chip->p_dma;
if (on) {
dma_cont->prepare(dma_cont, 0);
dma_cont->enable(dma_cont, 1);
snd_cs4231_advance_dma(dma_cont,
chip->playback_substream,
&chip->p_periods_sent);
} else {
dma_cont->enable(dma_cont, 0);
}
}
if (what & CS4231_RECORD_ENABLE) {
dma_cont = &chip->c_dma;
if (on) {
dma_cont->prepare(dma_cont, 1);
dma_cont->enable(dma_cont, 1);
snd_cs4231_advance_dma(dma_cont,
chip->capture_substream,
&chip->c_periods_sent);
} else {
dma_cont->enable(dma_cont, 0);
}
}
}
static int snd_cs4231_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
int result = 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_STOP:
{
unsigned int what = 0;
struct snd_pcm_substream *s;
struct list_head *pos;
unsigned long flags;
snd_pcm_group_for_each(pos, substream) {
s = snd_pcm_group_substream_entry(pos);
if (s == chip->playback_substream) {
what |= CS4231_PLAYBACK_ENABLE;
snd_pcm_trigger_done(s, substream);
} else if (s == chip->capture_substream) {
what |= CS4231_RECORD_ENABLE;
snd_pcm_trigger_done(s, substream);
}
}
spin_lock_irqsave(&chip->lock, flags);
if (cmd == SNDRV_PCM_TRIGGER_START) {
cs4231_dma_trigger(substream, what, 1);
chip->image[CS4231_IFACE_CTRL] |= what;
} else {
cs4231_dma_trigger(substream, what, 0);
chip->image[CS4231_IFACE_CTRL] &= ~what;
}
snd_cs4231_out(chip, CS4231_IFACE_CTRL,
chip->image[CS4231_IFACE_CTRL]);
spin_unlock_irqrestore(&chip->lock, flags);
break;
}
default:
result = -EINVAL;
break;
}
return result;
}
/*
* CODEC I/O
*/
static unsigned char snd_cs4231_get_rate(unsigned int rate)
{
int i;
for (i = 0; i < 14; i++)
if (rate == rates[i])
return freq_bits[i];
// snd_BUG();
return freq_bits[13];
}
static unsigned char snd_cs4231_get_format(struct snd_cs4231 *chip, int format, int channels)
{
unsigned char rformat;
rformat = CS4231_LINEAR_8;
switch (format) {
case SNDRV_PCM_FORMAT_MU_LAW: rformat = CS4231_ULAW_8; break;
case SNDRV_PCM_FORMAT_A_LAW: rformat = CS4231_ALAW_8; break;
case SNDRV_PCM_FORMAT_S16_LE: rformat = CS4231_LINEAR_16; break;
case SNDRV_PCM_FORMAT_S16_BE: rformat = CS4231_LINEAR_16_BIG; break;
case SNDRV_PCM_FORMAT_IMA_ADPCM: rformat = CS4231_ADPCM_16; break;
}
if (channels > 1)
rformat |= CS4231_STEREO;
return rformat;
}
static void snd_cs4231_calibrate_mute(struct snd_cs4231 *chip, int mute)
{
unsigned long flags;
mute = mute ? 1 : 0;
spin_lock_irqsave(&chip->lock, flags);
if (chip->calibrate_mute == mute) {
spin_unlock_irqrestore(&chip->lock, flags);
return;
}
if (!mute) {
snd_cs4231_dout(chip, CS4231_LEFT_INPUT,
chip->image[CS4231_LEFT_INPUT]);
snd_cs4231_dout(chip, CS4231_RIGHT_INPUT,
chip->image[CS4231_RIGHT_INPUT]);
snd_cs4231_dout(chip, CS4231_LOOPBACK,
chip->image[CS4231_LOOPBACK]);
}
snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT,
mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT,
mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT,
mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT,
mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT,
mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT,
mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN,
mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN,
mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
snd_cs4231_dout(chip, CS4231_MONO_CTRL,
mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
chip->calibrate_mute = mute;
spin_unlock_irqrestore(&chip->lock, flags);
}
static void snd_cs4231_playback_format(struct snd_cs4231 *chip, struct snd_pcm_hw_params *params,
unsigned char pdfr)
{
unsigned long flags;
mutex_lock(&chip->mce_mutex);
snd_cs4231_calibrate_mute(chip, 1);
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->lock, flags);
snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
(pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
pdfr);
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_mce_down(chip);
snd_cs4231_calibrate_mute(chip, 0);
mutex_unlock(&chip->mce_mutex);
}
static void snd_cs4231_capture_format(struct snd_cs4231 *chip, struct snd_pcm_hw_params *params,
unsigned char cdfr)
{
unsigned long flags;
mutex_lock(&chip->mce_mutex);
snd_cs4231_calibrate_mute(chip, 1);
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->lock, flags);
if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
((chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
(cdfr & 0x0f));
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_mce_down(chip);
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->lock, flags);
}
snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_mce_down(chip);
snd_cs4231_calibrate_mute(chip, 0);
mutex_unlock(&chip->mce_mutex);
}
/*
* Timer interface
*/
static unsigned long snd_cs4231_timer_resolution(struct snd_timer *timer)
{
struct snd_cs4231 *chip = snd_timer_chip(timer);
return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
}
static int snd_cs4231_timer_start(struct snd_timer *timer)
{
unsigned long flags;
unsigned int ticks;
struct snd_cs4231 *chip = snd_timer_chip(timer);
spin_lock_irqsave(&chip->lock, flags);
ticks = timer->sticks;
if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
(unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
(unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
snd_cs4231_out(chip, CS4231_TIMER_HIGH,
chip->image[CS4231_TIMER_HIGH] =
(unsigned char) (ticks >> 8));
snd_cs4231_out(chip, CS4231_TIMER_LOW,
chip->image[CS4231_TIMER_LOW] =
(unsigned char) ticks);
snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
chip->image[CS4231_ALT_FEATURE_1] | CS4231_TIMER_ENABLE);
}
spin_unlock_irqrestore(&chip->lock, flags);
return 0;
}
static int snd_cs4231_timer_stop(struct snd_timer *timer)
{
unsigned long flags;
struct snd_cs4231 *chip = snd_timer_chip(timer);
spin_lock_irqsave(&chip->lock, flags);
snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE);
spin_unlock_irqrestore(&chip->lock, flags);
return 0;
}
static void __init snd_cs4231_init(struct snd_cs4231 *chip)
{
unsigned long flags;
snd_cs4231_mce_down(chip);
#ifdef SNDRV_DEBUG_MCE
snd_printdd("init: (1)\n");
#endif
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->lock, flags);
chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
CS4231_RECORD_ENABLE | CS4231_RECORD_PIO |
CS4231_CALIB_MODE);
chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_mce_down(chip);
#ifdef SNDRV_DEBUG_MCE
snd_printdd("init: (2)\n");
#endif
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->lock, flags);
snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1]);
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_mce_down(chip);
#ifdef SNDRV_DEBUG_MCE
snd_printdd("init: (3) - afei = 0x%x\n", chip->image[CS4231_ALT_FEATURE_1]);
#endif
spin_lock_irqsave(&chip->lock, flags);
snd_cs4231_out(chip, CS4231_ALT_FEATURE_2, chip->image[CS4231_ALT_FEATURE_2]);
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->lock, flags);
snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT]);
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_mce_down(chip);
#ifdef SNDRV_DEBUG_MCE
snd_printdd("init: (4)\n");
#endif
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->lock, flags);
snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_mce_down(chip);
#ifdef SNDRV_DEBUG_MCE
snd_printdd("init: (5)\n");
#endif
}
static int snd_cs4231_open(struct snd_cs4231 *chip, unsigned int mode)
{
unsigned long flags;
mutex_lock(&chip->open_mutex);
if ((chip->mode & mode)) {
mutex_unlock(&chip->open_mutex);
return -EAGAIN;
}
if (chip->mode & CS4231_MODE_OPEN) {
chip->mode |= mode;
mutex_unlock(&chip->open_mutex);
return 0;
}
/* ok. now enable and ack CODEC IRQ */
spin_lock_irqsave(&chip->lock, flags);
snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
CS4231_RECORD_IRQ |
CS4231_TIMER_IRQ);
snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
__cs4231_writeb(chip, 0, CS4231P(chip, STATUS)); /* clear IRQ */
__cs4231_writeb(chip, 0, CS4231P(chip, STATUS)); /* clear IRQ */
snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
CS4231_RECORD_IRQ |
CS4231_TIMER_IRQ);
snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
spin_unlock_irqrestore(&chip->lock, flags);
chip->mode = mode;
mutex_unlock(&chip->open_mutex);
return 0;
}
static void snd_cs4231_close(struct snd_cs4231 *chip, unsigned int mode)
{
unsigned long flags;
mutex_lock(&chip->open_mutex);
chip->mode &= ~mode;
if (chip->mode & CS4231_MODE_OPEN) {
mutex_unlock(&chip->open_mutex);
return;
}
snd_cs4231_calibrate_mute(chip, 1);
/* disable IRQ */
spin_lock_irqsave(&chip->lock, flags);
snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
__cs4231_writeb(chip, 0, CS4231P(chip, STATUS)); /* clear IRQ */
__cs4231_writeb(chip, 0, CS4231P(chip, STATUS)); /* clear IRQ */
/* now disable record & playback */
if (chip->image[CS4231_IFACE_CTRL] &
(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_mce_up(chip);
spin_lock_irqsave(&chip->lock, flags);
chip->image[CS4231_IFACE_CTRL] &=
~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_mce_down(chip);
spin_lock_irqsave(&chip->lock, flags);
}
/* clear IRQ again */
snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
__cs4231_writeb(chip, 0, CS4231P(chip, STATUS)); /* clear IRQ */
__cs4231_writeb(chip, 0, CS4231P(chip, STATUS)); /* clear IRQ */
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_calibrate_mute(chip, 0);
chip->mode = 0;
mutex_unlock(&chip->open_mutex);
}
/*
* timer open/close
*/
static int snd_cs4231_timer_open(struct snd_timer *timer)
{
struct snd_cs4231 *chip = snd_timer_chip(timer);
snd_cs4231_open(chip, CS4231_MODE_TIMER);
return 0;
}
static int snd_cs4231_timer_close(struct snd_timer * timer)
{
struct snd_cs4231 *chip = snd_timer_chip(timer);
snd_cs4231_close(chip, CS4231_MODE_TIMER);
return 0;
}
static struct snd_timer_hardware snd_cs4231_timer_table =
{
.flags = SNDRV_TIMER_HW_AUTO,
.resolution = 9945,
.ticks = 65535,
.open = snd_cs4231_timer_open,
.close = snd_cs4231_timer_close,
.c_resolution = snd_cs4231_timer_resolution,
.start = snd_cs4231_timer_start,
.stop = snd_cs4231_timer_stop,
};
/*
* ok.. exported functions..
*/
static int snd_cs4231_playback_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
unsigned char new_pdfr;
int err;
if ((err = snd_pcm_lib_malloc_pages(substream,
params_buffer_bytes(hw_params))) < 0)
return err;
new_pdfr = snd_cs4231_get_format(chip, params_format(hw_params),
params_channels(hw_params)) |
snd_cs4231_get_rate(params_rate(hw_params));
snd_cs4231_playback_format(chip, hw_params, new_pdfr);
return 0;
}
static int snd_cs4231_playback_hw_free(struct snd_pcm_substream *substream)
{
return snd_pcm_lib_free_pages(substream);
}
static int snd_cs4231_playback_prepare(struct snd_pcm_substream *substream)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
unsigned long flags;
spin_lock_irqsave(&chip->lock, flags);
chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
CS4231_PLAYBACK_PIO);
BUG_ON(runtime->period_size > 0xffff + 1);
chip->p_periods_sent = 0;
spin_unlock_irqrestore(&chip->lock, flags);
return 0;
}
static int snd_cs4231_capture_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
unsigned char new_cdfr;
int err;
if ((err = snd_pcm_lib_malloc_pages(substream,
params_buffer_bytes(hw_params))) < 0)
return err;
new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params),
params_channels(hw_params)) |
snd_cs4231_get_rate(params_rate(hw_params));
snd_cs4231_capture_format(chip, hw_params, new_cdfr);
return 0;
}
static int snd_cs4231_capture_hw_free(struct snd_pcm_substream *substream)
{
return snd_pcm_lib_free_pages(substream);
}
static int snd_cs4231_capture_prepare(struct snd_pcm_substream *substream)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
unsigned long flags;
spin_lock_irqsave(&chip->lock, flags);
chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE |
CS4231_RECORD_PIO);
chip->c_periods_sent = 0;
spin_unlock_irqrestore(&chip->lock, flags);
return 0;
}
static void snd_cs4231_overrange(struct snd_cs4231 *chip)
{
unsigned long flags;
unsigned char res;
spin_lock_irqsave(&chip->lock, flags);
res = snd_cs4231_in(chip, CS4231_TEST_INIT);
spin_unlock_irqrestore(&chip->lock, flags);
if (res & (0x08 | 0x02)) /* detect overrange only above 0dB; may be user selectable? */
chip->capture_substream->runtime->overrange++;
}
static void snd_cs4231_play_callback(struct snd_cs4231 *chip)
{
if (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE) {
snd_pcm_period_elapsed(chip->playback_substream);
snd_cs4231_advance_dma(&chip->p_dma, chip->playback_substream,
&chip->p_periods_sent);
}
}
static void snd_cs4231_capture_callback(struct snd_cs4231 *chip)
{
if (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) {
snd_pcm_period_elapsed(chip->capture_substream);
snd_cs4231_advance_dma(&chip->c_dma, chip->capture_substream,
&chip->c_periods_sent);
}
}
static snd_pcm_uframes_t snd_cs4231_playback_pointer(struct snd_pcm_substream *substream)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
struct cs4231_dma_control *dma_cont = &chip->p_dma;
size_t ptr;
if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
return 0;
ptr = dma_cont->address(dma_cont);
if (ptr != 0)
ptr -= substream->runtime->dma_addr;
return bytes_to_frames(substream->runtime, ptr);
}
static snd_pcm_uframes_t snd_cs4231_capture_pointer(struct snd_pcm_substream *substream)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
struct cs4231_dma_control *dma_cont = &chip->c_dma;
size_t ptr;
if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
return 0;
ptr = dma_cont->address(dma_cont);
if (ptr != 0)
ptr -= substream->runtime->dma_addr;
return bytes_to_frames(substream->runtime, ptr);
}
/*
*/
static int __init snd_cs4231_probe(struct snd_cs4231 *chip)
{
unsigned long flags;
int i, id, vers;
unsigned char *ptr;
id = vers = 0;
for (i = 0; i < 50; i++) {
mb();
if (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT)
udelay(2000);
else {
spin_lock_irqsave(&chip->lock, flags);
snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
vers = snd_cs4231_in(chip, CS4231_VERSION);
spin_unlock_irqrestore(&chip->lock, flags);
if (id == 0x0a)
break; /* this is valid value */
}
}
snd_printdd("cs4231: port = %p, id = 0x%x\n", chip->port, id);
if (id != 0x0a)
return -ENODEV; /* no valid device found */
spin_lock_irqsave(&chip->lock, flags);
/* Reset DMA engine (sbus only). */
chip->p_dma.reset(chip);
__cs4231_readb(chip, CS4231P(chip, STATUS)); /* clear any pendings IRQ */
__cs4231_writeb(chip, 0, CS4231P(chip, STATUS));
mb();
spin_unlock_irqrestore(&chip->lock, flags);
chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
chip->image[CS4231_IFACE_CTRL] =
chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA;
chip->image[CS4231_ALT_FEATURE_1] = 0x80;
chip->image[CS4231_ALT_FEATURE_2] = 0x01;
if (vers & 0x20)
chip->image[CS4231_ALT_FEATURE_2] |= 0x02;
ptr = (unsigned char *) &chip->image;
snd_cs4231_mce_down(chip);
spin_lock_irqsave(&chip->lock, flags);
for (i = 0; i < 32; i++) /* ok.. fill all CS4231 registers */
snd_cs4231_out(chip, i, *ptr++);
spin_unlock_irqrestore(&chip->lock, flags);
snd_cs4231_mce_up(chip);
snd_cs4231_mce_down(chip);
mdelay(2);
return 0; /* all things are ok.. */
}
static struct snd_pcm_hardware snd_cs4231_playback =
{
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START),
.formats = (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
SNDRV_PCM_FMTBIT_IMA_ADPCM |
SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
SNDRV_PCM_FMTBIT_S16_BE),
.rates = SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
.rate_min = 5510,
.rate_max = 48000,
.channels_min = 1,
.channels_max = 2,
.buffer_bytes_max = (32*1024),
.period_bytes_min = 4096,
.period_bytes_max = (32*1024),
.periods_min = 1,
.periods_max = 1024,
};
static struct snd_pcm_hardware snd_cs4231_capture =
{
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START),
.formats = (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
SNDRV_PCM_FMTBIT_IMA_ADPCM |
SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
SNDRV_PCM_FMTBIT_S16_BE),
.rates = SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
.rate_min = 5510,
.rate_max = 48000,
.channels_min = 1,
.channels_max = 2,
.buffer_bytes_max = (32*1024),
.period_bytes_min = 4096,
.period_bytes_max = (32*1024),
.periods_min = 1,
.periods_max = 1024,
};
static int snd_cs4231_playback_open(struct snd_pcm_substream *substream)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
runtime->hw = snd_cs4231_playback;
if ((err = snd_cs4231_open(chip, CS4231_MODE_PLAY)) < 0) {
snd_free_pages(runtime->dma_area, runtime->dma_bytes);
return err;
}
chip->playback_substream = substream;
chip->p_periods_sent = 0;
snd_pcm_set_sync(substream);
snd_cs4231_xrate(runtime);
return 0;
}
static int snd_cs4231_capture_open(struct snd_pcm_substream *substream)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
runtime->hw = snd_cs4231_capture;
if ((err = snd_cs4231_open(chip, CS4231_MODE_RECORD)) < 0) {
snd_free_pages(runtime->dma_area, runtime->dma_bytes);
return err;
}
chip->capture_substream = substream;
chip->c_periods_sent = 0;
snd_pcm_set_sync(substream);
snd_cs4231_xrate(runtime);
return 0;
}
static int snd_cs4231_playback_close(struct snd_pcm_substream *substream)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
snd_cs4231_close(chip, CS4231_MODE_PLAY);
chip->playback_substream = NULL;
return 0;
}
static int snd_cs4231_capture_close(struct snd_pcm_substream *substream)
{
struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
snd_cs4231_close(chip, CS4231_MODE_RECORD);
chip->capture_substream = NULL;
return 0;
}
/* XXX We can do some power-management, in particular on EBUS using
* XXX the audio AUXIO register...
*/
static struct snd_pcm_ops snd_cs4231_playback_ops = {
.open = snd_cs4231_playback_open,
.close = snd_cs4231_playback_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_cs4231_playback_hw_params,
.hw_free = snd_cs4231_playback_hw_free,
.prepare = snd_cs4231_playback_prepare,
.trigger = snd_cs4231_trigger,
.pointer = snd_cs4231_playback_pointer,
};
static struct snd_pcm_ops snd_cs4231_capture_ops = {
.open = snd_cs4231_capture_open,
.close = snd_cs4231_capture_close,
.ioctl = snd_pcm_lib_ioctl,
.hw_params = snd_cs4231_capture_hw_params,
.hw_free = snd_cs4231_capture_hw_free,
.prepare = snd_cs4231_capture_prepare,
.trigger = snd_cs4231_trigger,
.pointer = snd_cs4231_capture_pointer,
};
static int __init snd_cs4231_pcm(struct snd_cs4231 *chip)
{
struct snd_pcm *pcm;
int err;
if ((err = snd_pcm_new(chip->card, "CS4231", 0, 1, 1, &pcm)) < 0)
return err;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_cs4231_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cs4231_capture_ops);
/* global setup */
pcm->private_data = chip;
pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
strcpy(pcm->name, "CS4231");
chip->p_dma.preallocate(chip, pcm);
chip->pcm = pcm;
return 0;
}
static int __init snd_cs4231_timer(struct snd_cs4231 *chip)
{
struct snd_timer *timer;
struct snd_timer_id tid;
int err;
/* Timer initialization */
tid.dev_class = SNDRV_TIMER_CLASS_CARD;
tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
tid.card = chip->card->number;
tid.device = 0;
tid.subdevice = 0;
if ((err = snd_timer_new(chip->card, "CS4231", &tid, &timer)) < 0)
return err;
strcpy(timer->name, "CS4231");
timer->private_data = chip;
timer->hw = snd_cs4231_timer_table;
chip->timer = timer;
return 0;
}
/*
* MIXER part
*/
static int snd_cs4231_info_mux(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
static char *texts[4] = {
"Line", "CD", "Mic", "Mix"
};
struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
snd_assert(chip->card != NULL, return -EINVAL);
uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
uinfo->count = 2;
uinfo->value.enumerated.items = 4;
if (uinfo->value.enumerated.item > 3)
uinfo->value.enumerated.item = 3;
strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
return 0;
}
static int snd_cs4231_get_mux(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
spin_lock_irqsave(&chip->lock, flags);
ucontrol->value.enumerated.item[0] =
(chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
ucontrol->value.enumerated.item[1] =
(chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
spin_unlock_irqrestore(&chip->lock, flags);
return 0;
}
static int snd_cs4231_put_mux(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
unsigned short left, right;
int change;
if (ucontrol->value.enumerated.item[0] > 3 ||
ucontrol->value.enumerated.item[1] > 3)
return -EINVAL;
left = ucontrol->value.enumerated.item[0] << 6;
right = ucontrol->value.enumerated.item[1] << 6;
spin_lock_irqsave(&chip->lock, flags);
left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
change = left != chip->image[CS4231_LEFT_INPUT] ||
right != chip->image[CS4231_RIGHT_INPUT];
snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
spin_unlock_irqrestore(&chip->lock, flags);
return change;
}
static int snd_cs4231_info_single(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
int mask = (kcontrol->private_value >> 16) & 0xff;
uinfo->type = (mask == 1) ?
SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 1;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = mask;
return 0;
}
static int snd_cs4231_get_single(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int reg = kcontrol->private_value & 0xff;
int shift = (kcontrol->private_value >> 8) & 0xff;
int mask = (kcontrol->private_value >> 16) & 0xff;
int invert = (kcontrol->private_value >> 24) & 0xff;
spin_lock_irqsave(&chip->lock, flags);
ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
spin_unlock_irqrestore(&chip->lock, flags);
if (invert)
ucontrol->value.integer.value[0] =
(mask - ucontrol->value.integer.value[0]);
return 0;
}
static int snd_cs4231_put_single(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int reg = kcontrol->private_value & 0xff;
int shift = (kcontrol->private_value >> 8) & 0xff;
int mask = (kcontrol->private_value >> 16) & 0xff;
int invert = (kcontrol->private_value >> 24) & 0xff;
int change;
unsigned short val;
val = (ucontrol->value.integer.value[0] & mask);
if (invert)
val = mask - val;
val <<= shift;
spin_lock_irqsave(&chip->lock, flags);
val = (chip->image[reg] & ~(mask << shift)) | val;
change = val != chip->image[reg];
snd_cs4231_out(chip, reg, val);
spin_unlock_irqrestore(&chip->lock, flags);
return change;
}
static int snd_cs4231_info_double(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
int mask = (kcontrol->private_value >> 24) & 0xff;
uinfo->type = mask == 1 ?
SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 2;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = mask;
return 0;
}
static int snd_cs4231_get_double(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int left_reg = kcontrol->private_value & 0xff;
int right_reg = (kcontrol->private_value >> 8) & 0xff;
int shift_left = (kcontrol->private_value >> 16) & 0x07;
int shift_right = (kcontrol->private_value >> 19) & 0x07;
int mask = (kcontrol->private_value >> 24) & 0xff;
int invert = (kcontrol->private_value >> 22) & 1;
spin_lock_irqsave(&chip->lock, flags);
ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
spin_unlock_irqrestore(&chip->lock, flags);
if (invert) {
ucontrol->value.integer.value[0] =
(mask - ucontrol->value.integer.value[0]);
ucontrol->value.integer.value[1] =
(mask - ucontrol->value.integer.value[1]);
}
return 0;
}
static int snd_cs4231_put_double(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int left_reg = kcontrol->private_value & 0xff;
int right_reg = (kcontrol->private_value >> 8) & 0xff;
int shift_left = (kcontrol->private_value >> 16) & 0x07;
int shift_right = (kcontrol->private_value >> 19) & 0x07;
int mask = (kcontrol->private_value >> 24) & 0xff;
int invert = (kcontrol->private_value >> 22) & 1;
int change;
unsigned short val1, val2;
val1 = ucontrol->value.integer.value[0] & mask;
val2 = ucontrol->value.integer.value[1] & mask;
if (invert) {
val1 = mask - val1;
val2 = mask - val2;
}
val1 <<= shift_left;
val2 <<= shift_right;
spin_lock_irqsave(&chip->lock, flags);
val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
snd_cs4231_out(chip, left_reg, val1);
snd_cs4231_out(chip, right_reg, val2);
spin_unlock_irqrestore(&chip->lock, flags);
return change;
}
#define CS4231_SINGLE(xname, xindex, reg, shift, mask, invert) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
.info = snd_cs4231_info_single, \
.get = snd_cs4231_get_single, .put = snd_cs4231_put_single, \
.private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
#define CS4231_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
.info = snd_cs4231_info_double, \
.get = snd_cs4231_get_double, .put = snd_cs4231_put_double, \
.private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
static struct snd_kcontrol_new snd_cs4231_controls[] __initdata = {
CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0, 15, 0),
{
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.name = "Capture Source",
.info = snd_cs4231_info_mux,
.get = snd_cs4231_get_mux,
.put = snd_cs4231_put_mux,
},
CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5, 1, 0),
CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1),
/* SPARC specific uses of XCTL{0,1} general purpose outputs. */
CS4231_SINGLE("Line Out Switch", 0, CS4231_PIN_CTRL, 6, 1, 1),
CS4231_SINGLE("Headphone Out Switch", 0, CS4231_PIN_CTRL, 7, 1, 1)
};
static int __init snd_cs4231_mixer(struct snd_cs4231 *chip)
{
struct snd_card *card;
int err, idx;
snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
card = chip->card;
strcpy(card->mixername, chip->pcm->name);
for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
if ((err = snd_ctl_add(card,
snd_ctl_new1(&snd_cs4231_controls[idx],
chip))) < 0)
return err;
}
return 0;
}
static int dev;
static int __init cs4231_attach_begin(struct snd_card **rcard)
{
struct snd_card *card;
*rcard = NULL;
if (dev >= SNDRV_CARDS)
return -ENODEV;
if (!enable[dev]) {
dev++;
return -ENOENT;
}
card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
if (card == NULL)
return -ENOMEM;
strcpy(card->driver, "CS4231");
strcpy(card->shortname, "Sun CS4231");
*rcard = card;
return 0;
}
static int __init cs4231_attach_finish(struct snd_card *card, struct snd_cs4231 *chip)
{
int err;
if ((err = snd_cs4231_pcm(chip)) < 0)
goto out_err;
if ((err = snd_cs4231_mixer(chip)) < 0)
goto out_err;
if ((err = snd_cs4231_timer(chip)) < 0)
goto out_err;
if ((err = snd_card_register(card)) < 0)
goto out_err;
chip->next = cs4231_list;
cs4231_list = chip;
dev++;
return 0;
out_err:
snd_card_free(card);
return err;
}
#ifdef SBUS_SUPPORT
static irqreturn_t snd_cs4231_sbus_interrupt(int irq, void *dev_id)
{
unsigned long flags;
unsigned char status;
u32 csr;
struct snd_cs4231 *chip = dev_id;
/*This is IRQ is not raised by the cs4231*/
if (!(__cs4231_readb(chip, CS4231P(chip, STATUS)) & CS4231_GLOBALIRQ))
return IRQ_NONE;
/* ACK the APC interrupt. */
csr = sbus_readl(chip->port + APCCSR);
sbus_writel(csr, chip->port + APCCSR);
if ((csr & APC_PDMA_READY) &&
(csr & APC_PLAY_INT) &&
(csr & APC_XINT_PNVA) &&
!(csr & APC_XINT_EMPT))
snd_cs4231_play_callback(chip);
if ((csr & APC_CDMA_READY) &&
(csr & APC_CAPT_INT) &&
(csr & APC_XINT_CNVA) &&
!(csr & APC_XINT_EMPT))
snd_cs4231_capture_callback(chip);
status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
if (status & CS4231_TIMER_IRQ) {
if (chip->timer)
snd_timer_interrupt(chip->timer, chip->timer->sticks);
}
if ((status & CS4231_RECORD_IRQ) && (csr & APC_CDMA_READY))
snd_cs4231_overrange(chip);
/* ACK the CS4231 interrupt. */
spin_lock_irqsave(&chip->lock, flags);
snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
spin_unlock_irqrestore(&chip->lock, flags);
return 0;
}
/*
* SBUS DMA routines
*/
static int sbus_dma_request(struct cs4231_dma_control *dma_cont, dma_addr_t bus_addr, size_t len)
{
unsigned long flags;
u32 test, csr;
int err;
struct sbus_dma_info *base = &dma_cont->sbus_info;
if (len >= (1 << 24))
return -EINVAL;
spin_lock_irqsave(&base->lock, flags);
csr = sbus_readl(base->regs + APCCSR);
err = -EINVAL;
test = APC_CDMA_READY;
if ( base->dir == APC_PLAY )
test = APC_PDMA_READY;
if (!(csr & test))
goto out;
err = -EBUSY;
csr = sbus_readl(base->regs + APCCSR);
test = APC_XINT_CNVA;
if ( base->dir == APC_PLAY )
test = APC_XINT_PNVA;
if (!(csr & test))
goto out;
err = 0;
sbus_writel(bus_addr, base->regs + base->dir + APCNVA);
sbus_writel(len, base->regs + base->dir + APCNC);
out:
spin_unlock_irqrestore(&base->lock, flags);
return err;
}
static void sbus_dma_prepare(struct cs4231_dma_control *dma_cont, int d)
{
unsigned long flags;
u32 csr, test;
struct sbus_dma_info *base = &dma_cont->sbus_info;
spin_lock_irqsave(&base->lock, flags);
csr = sbus_readl(base->regs + APCCSR);
test = APC_GENL_INT | APC_PLAY_INT | APC_XINT_ENA |
APC_XINT_PLAY | APC_XINT_PEMP | APC_XINT_GENL |
APC_XINT_PENA;
if ( base->dir == APC_RECORD )
test = APC_GENL_INT | APC_CAPT_INT | APC_XINT_ENA |
APC_XINT_CAPT | APC_XINT_CEMP | APC_XINT_GENL;
csr |= test;
sbus_writel(csr, base->regs + APCCSR);
spin_unlock_irqrestore(&base->lock, flags);
}
static void sbus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
{
unsigned long flags;
u32 csr, shift;
struct sbus_dma_info *base = &dma_cont->sbus_info;
spin_lock_irqsave(&base->lock, flags);
if (!on) {
if (base->dir == APC_PLAY) {
sbus_writel(0, base->regs + base->dir + APCNVA);
sbus_writel(1, base->regs + base->dir + APCC);
}
else
{
sbus_writel(0, base->regs + base->dir + APCNC);
sbus_writel(0, base->regs + base->dir + APCVA);
}
}
udelay(600);
csr = sbus_readl(base->regs + APCCSR);
shift = 0;
if ( base->dir == APC_PLAY )
shift = 1;
if (on)
csr &= ~(APC_CPAUSE << shift);
else
csr |= (APC_CPAUSE << shift);
sbus_writel(csr, base->regs + APCCSR);
if (on)
csr |= (APC_CDMA_READY << shift);
else
csr &= ~(APC_CDMA_READY << shift);
sbus_writel(csr, base->regs + APCCSR);
spin_unlock_irqrestore(&base->lock, flags);
}
static unsigned int sbus_dma_addr(struct cs4231_dma_control *dma_cont)
{
struct sbus_dma_info *base = &dma_cont->sbus_info;
return sbus_readl(base->regs + base->dir + APCVA);
}
static void sbus_dma_reset(struct snd_cs4231 *chip)
{
sbus_writel(APC_CHIP_RESET, chip->port + APCCSR);
sbus_writel(0x00, chip->port + APCCSR);
sbus_writel(sbus_readl(chip->port + APCCSR) | APC_CDC_RESET,
chip->port + APCCSR);
udelay(20);
sbus_writel(sbus_readl(chip->port + APCCSR) & ~APC_CDC_RESET,
chip->port + APCCSR);
sbus_writel(sbus_readl(chip->port + APCCSR) | (APC_XINT_ENA |
APC_XINT_PENA |
APC_XINT_CENA),
chip->port + APCCSR);
}
static void sbus_dma_preallocate(struct snd_cs4231 *chip, struct snd_pcm *pcm)
{
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_SBUS,
snd_dma_sbus_data(chip->dev_u.sdev),
64*1024, 128*1024);
}
/*
* Init and exit routines
*/
static int snd_cs4231_sbus_free(struct snd_cs4231 *chip)
{
if (chip->irq[0])
free_irq(chip->irq[0], chip);
if (chip->port)
sbus_iounmap(chip->port, chip->regs_size);
kfree(chip);
return 0;
}
static int snd_cs4231_sbus_dev_free(struct snd_device *device)
{
struct snd_cs4231 *cp = device->device_data;
return snd_cs4231_sbus_free(cp);
}
static struct snd_device_ops snd_cs4231_sbus_dev_ops = {
.dev_free = snd_cs4231_sbus_dev_free,
};
static int __init snd_cs4231_sbus_create(struct snd_card *card,
struct sbus_dev *sdev,
int dev,
struct snd_cs4231 **rchip)
{
struct snd_cs4231 *chip;
int err;
*rchip = NULL;
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
if (chip == NULL)
return -ENOMEM;
spin_lock_init(&chip->lock);
spin_lock_init(&chip->c_dma.sbus_info.lock);
spin_lock_init(&chip->p_dma.sbus_info.lock);
mutex_init(&chip->mce_mutex);
mutex_init(&chip->open_mutex);
chip->card = card;
chip->dev_u.sdev = sdev;
chip->regs_size = sdev->reg_addrs[0].reg_size;
memcpy(&chip->image, &snd_cs4231_original_image,
sizeof(snd_cs4231_original_image));
chip->port = sbus_ioremap(&sdev->resource[0], 0,
chip->regs_size, "cs4231");
if (!chip->port) {
snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
return -EIO;
}
chip->c_dma.sbus_info.regs = chip->port;
chip->p_dma.sbus_info.regs = chip->port;
chip->c_dma.sbus_info.dir = APC_RECORD;
chip->p_dma.sbus_info.dir = APC_PLAY;
chip->p_dma.prepare = sbus_dma_prepare;
chip->p_dma.enable = sbus_dma_enable;
chip->p_dma.request = sbus_dma_request;
chip->p_dma.address = sbus_dma_addr;
chip->p_dma.reset = sbus_dma_reset;
chip->p_dma.preallocate = sbus_dma_preallocate;
chip->c_dma.prepare = sbus_dma_prepare;
chip->c_dma.enable = sbus_dma_enable;
chip->c_dma.request = sbus_dma_request;
chip->c_dma.address = sbus_dma_addr;
chip->c_dma.reset = sbus_dma_reset;
chip->c_dma.preallocate = sbus_dma_preallocate;
if (request_irq(sdev->irqs[0], snd_cs4231_sbus_interrupt,
IRQF_SHARED, "cs4231", chip)) {
snd_printdd("cs4231-%d: Unable to grab SBUS IRQ %d\n",
dev, sdev->irqs[0]);
snd_cs4231_sbus_free(chip);
return -EBUSY;
}
chip->irq[0] = sdev->irqs[0];
if (snd_cs4231_probe(chip) < 0) {
snd_cs4231_sbus_free(chip);
return -ENODEV;
}
snd_cs4231_init(chip);
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
chip, &snd_cs4231_sbus_dev_ops)) < 0) {
snd_cs4231_sbus_free(chip);
return err;
}
*rchip = chip;
return 0;
}
static int __init cs4231_sbus_attach(struct sbus_dev *sdev)
{
struct resource *rp = &sdev->resource[0];
struct snd_cs4231 *cp;
struct snd_card *card;
int err;
err = cs4231_attach_begin(&card);
if (err)
return err;
sprintf(card->longname, "%s at 0x%02lx:0x%016Lx, irq %d",
card->shortname,
rp->flags & 0xffL,
(unsigned long long)rp->start,
sdev->irqs[0]);
if ((err = snd_cs4231_sbus_create(card, sdev, dev, &cp)) < 0) {
snd_card_free(card);
return err;
}
return cs4231_attach_finish(card, cp);
}
#endif
#ifdef EBUS_SUPPORT
static void snd_cs4231_ebus_play_callback(struct ebus_dma_info *p, int event, void *cookie)
{
struct snd_cs4231 *chip = cookie;
snd_cs4231_play_callback(chip);
}
static void snd_cs4231_ebus_capture_callback(struct ebus_dma_info *p, int event, void *cookie)
{
struct snd_cs4231 *chip = cookie;
snd_cs4231_capture_callback(chip);
}
/*
* EBUS DMA wrappers
*/
static int _ebus_dma_request(struct cs4231_dma_control *dma_cont, dma_addr_t bus_addr, size_t len)
{
return ebus_dma_request(&dma_cont->ebus_info, bus_addr, len);
}
static void _ebus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
{
ebus_dma_enable(&dma_cont->ebus_info, on);
}
static void _ebus_dma_prepare(struct cs4231_dma_control *dma_cont, int dir)
{
ebus_dma_prepare(&dma_cont->ebus_info, dir);
}
static unsigned int _ebus_dma_addr(struct cs4231_dma_control *dma_cont)
{
return ebus_dma_addr(&dma_cont->ebus_info);
}
static void _ebus_dma_reset(struct snd_cs4231 *chip)
{
return;
}
static void _ebus_dma_preallocate(struct snd_cs4231 *chip, struct snd_pcm *pcm)
{
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
snd_dma_pci_data(chip->dev_u.pdev),
64*1024, 128*1024);
}
/*
* Init and exit routines
*/
static int snd_cs4231_ebus_free(struct snd_cs4231 *chip)
{
if (chip->c_dma.ebus_info.regs) {
ebus_dma_unregister(&chip->c_dma.ebus_info);
iounmap(chip->c_dma.ebus_info.regs);
}
if (chip->p_dma.ebus_info.regs) {
ebus_dma_unregister(&chip->p_dma.ebus_info);
iounmap(chip->p_dma.ebus_info.regs);
}
if (chip->port)
iounmap(chip->port);
kfree(chip);
return 0;
}
static int snd_cs4231_ebus_dev_free(struct snd_device *device)
{
struct snd_cs4231 *cp = device->device_data;
return snd_cs4231_ebus_free(cp);
}
static struct snd_device_ops snd_cs4231_ebus_dev_ops = {
.dev_free = snd_cs4231_ebus_dev_free,
};
static int __init snd_cs4231_ebus_create(struct snd_card *card,
struct linux_ebus_device *edev,
int dev,
struct snd_cs4231 **rchip)
{
struct snd_cs4231 *chip;
int err;
*rchip = NULL;
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
if (chip == NULL)
return -ENOMEM;
spin_lock_init(&chip->lock);
spin_lock_init(&chip->c_dma.ebus_info.lock);
spin_lock_init(&chip->p_dma.ebus_info.lock);
mutex_init(&chip->mce_mutex);
mutex_init(&chip->open_mutex);
chip->flags |= CS4231_FLAG_EBUS;
chip->card = card;
chip->dev_u.pdev = edev->bus->self;
memcpy(&chip->image, &snd_cs4231_original_image,
sizeof(snd_cs4231_original_image));
strcpy(chip->c_dma.ebus_info.name, "cs4231(capture)");
chip->c_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
chip->c_dma.ebus_info.callback = snd_cs4231_ebus_capture_callback;
chip->c_dma.ebus_info.client_cookie = chip;
chip->c_dma.ebus_info.irq = edev->irqs[0];
strcpy(chip->p_dma.ebus_info.name, "cs4231(play)");
chip->p_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
chip->p_dma.ebus_info.callback = snd_cs4231_ebus_play_callback;
chip->p_dma.ebus_info.client_cookie = chip;
chip->p_dma.ebus_info.irq = edev->irqs[1];
chip->p_dma.prepare = _ebus_dma_prepare;
chip->p_dma.enable = _ebus_dma_enable;
chip->p_dma.request = _ebus_dma_request;
chip->p_dma.address = _ebus_dma_addr;
chip->p_dma.reset = _ebus_dma_reset;
chip->p_dma.preallocate = _ebus_dma_preallocate;
chip->c_dma.prepare = _ebus_dma_prepare;
chip->c_dma.enable = _ebus_dma_enable;
chip->c_dma.request = _ebus_dma_request;
chip->c_dma.address = _ebus_dma_addr;
chip->c_dma.reset = _ebus_dma_reset;
chip->c_dma.preallocate = _ebus_dma_preallocate;
chip->port = ioremap(edev->resource[0].start, 0x10);
chip->p_dma.ebus_info.regs = ioremap(edev->resource[1].start, 0x10);
chip->c_dma.ebus_info.regs = ioremap(edev->resource[2].start, 0x10);
if (!chip->port || !chip->p_dma.ebus_info.regs || !chip->c_dma.ebus_info.regs) {
snd_cs4231_ebus_free(chip);
snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
return -EIO;
}
if (ebus_dma_register(&chip->c_dma.ebus_info)) {
snd_cs4231_ebus_free(chip);
snd_printdd("cs4231-%d: Unable to register EBUS capture DMA\n", dev);
return -EBUSY;
}
if (ebus_dma_irq_enable(&chip->c_dma.ebus_info, 1)) {
snd_cs4231_ebus_free(chip);
snd_printdd("cs4231-%d: Unable to enable EBUS capture IRQ\n", dev);
return -EBUSY;
}
if (ebus_dma_register(&chip->p_dma.ebus_info)) {
snd_cs4231_ebus_free(chip);
snd_printdd("cs4231-%d: Unable to register EBUS play DMA\n", dev);
return -EBUSY;
}
if (ebus_dma_irq_enable(&chip->p_dma.ebus_info, 1)) {
snd_cs4231_ebus_free(chip);
snd_printdd("cs4231-%d: Unable to enable EBUS play IRQ\n", dev);
return -EBUSY;
}
if (snd_cs4231_probe(chip) < 0) {
snd_cs4231_ebus_free(chip);
return -ENODEV;
}
snd_cs4231_init(chip);
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
chip, &snd_cs4231_ebus_dev_ops)) < 0) {
snd_cs4231_ebus_free(chip);
return err;
}
*rchip = chip;
return 0;
}
static int __init cs4231_ebus_attach(struct linux_ebus_device *edev)
{
struct snd_card *card;
struct snd_cs4231 *chip;
int err;
err = cs4231_attach_begin(&card);
if (err)
return err;
sprintf(card->longname, "%s at 0x%lx, irq %d",
card->shortname,
edev->resource[0].start,
edev->irqs[0]);
if ((err = snd_cs4231_ebus_create(card, edev, dev, &chip)) < 0) {
snd_card_free(card);
return err;
}
return cs4231_attach_finish(card, chip);
}
#endif
static int __init cs4231_init(void)
{
#ifdef SBUS_SUPPORT
struct sbus_bus *sbus;
struct sbus_dev *sdev;
#endif
#ifdef EBUS_SUPPORT
struct linux_ebus *ebus;
struct linux_ebus_device *edev;
#endif
int found;
found = 0;
#ifdef SBUS_SUPPORT
for_all_sbusdev(sdev, sbus) {
if (!strcmp(sdev->prom_name, "SUNW,CS4231")) {
if (cs4231_sbus_attach(sdev) == 0)
found++;
}
}
#endif
#ifdef EBUS_SUPPORT
for_each_ebus(ebus) {
for_each_ebusdev(edev, ebus) {
int match = 0;
if (!strcmp(edev->prom_node->name, "SUNW,CS4231")) {
match = 1;
} else if (!strcmp(edev->prom_node->name, "audio")) {
char *compat;
compat = of_get_property(edev->prom_node,
"compatible", NULL);
if (compat && !strcmp(compat, "SUNW,CS4231"))
match = 1;
}
if (match &&
cs4231_ebus_attach(edev) == 0)
found++;
}
}
#endif
return (found > 0) ? 0 : -EIO;
}
static void __exit cs4231_exit(void)
{
struct snd_cs4231 *p = cs4231_list;
while (p != NULL) {
struct snd_cs4231 *next = p->next;
snd_card_free(p->card);
p = next;
}
cs4231_list = NULL;
}
module_init(cs4231_init);
module_exit(cs4231_exit);
View Git Blame Copy Permalink