[ALSA] Fix and clean-up of vxpocket driver

Documentation,PCMCIA Kconfig,Digigram VX Pocket driver
- Fixed Oops with request_firmware()
- Detect the card type in runtime (vxpoocket v2 or 440)
- snd-vxp440 driver is merged to snd-vxpocket
- Clean up the code

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 373 insertions, 54 deletions

diff --git a/sound/pcmcia/vx/vxpocket.c b/sound/pcmcia/vx/vxpocket.c
index 62d6fa128148..3a82161d3b24 100644
--- a/sound/pcmcia/vx/vxpocket.c
+++ b/sound/pcmcia/vx/vxpocket.c
@@ -24,21 +24,17 @@
 #include <linux/moduleparam.h>
 #include <sound/core.h>
 #include "vxpocket.h"
+#include <pcmcia/ciscode.h>
+#include <pcmcia/cisreg.h>
 #include <sound/initval.h>
 
 /*
  */
 
-#ifdef COMPILE_VXP440
-#define CARD_NAME       "VXPocket440"
-#else
-#define CARD_NAME       "VXPocket"
-#endif
-
 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
-MODULE_DESCRIPTION("Digigram " CARD_NAME);
+MODULE_DESCRIPTION("Digigram VXPocket");
 MODULE_LICENSE("GPL");
-MODULE_SUPPORTED_DEVICE("{{Digigram," CARD_NAME "}}");
+MODULE_SUPPORTED_DEVICE("{{Digigram,VXPocket},{Digigram,VXPocket440}}");
 
 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
@@ -46,82 +42,405 @@ static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable switches */
 static int ibl[SNDRV_CARDS];
 
 module_param_array(index, int, NULL, 0444);
-MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
+MODULE_PARM_DESC(index, "Index value for VXPocket soundcard.");
 module_param_array(id, charp, NULL, 0444);
-MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
+MODULE_PARM_DESC(id, "ID string for VXPocket soundcard.");
 module_param_array(enable, bool, NULL, 0444);
-MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
+MODULE_PARM_DESC(enable, "Enable VXPocket soundcard.");
 module_param_array(ibl, int, NULL, 0444);
-MODULE_PARM_DESC(ibl, "Capture IBL size for " CARD_NAME " soundcard.");
+MODULE_PARM_DESC(ibl, "Capture IBL size for VXPocket soundcard.");
  
 
 /*
  */
 
-#ifdef COMPILE_VXP440
+static unsigned int card_alloc;
+static dev_link_t *dev_list;            /* Linked list of devices */
+static dev_info_t dev_info = "snd-vxpocket";
 
-/* 1 DSP, 1 sync UER, 1 sync World Clock (NIY) */
-/* SMPTE (NIY) */
-/* 2 stereo analog input (line/micro) */
-/* 2 stereo analog output */
-/* Only output levels can be modified */
-/* UER, but only for the first two inputs and outputs. */
 
-#define NUM_CODECS      2
-#define CARD_TYPE       VX_TYPE_VXP440
-#define DEV_INFO        "snd-vxp440"
+static int vxpocket_event(event_t event, int priority, event_callback_args_t *args);
 
-#else
 
-/* 1 DSP, 1 sync UER */
-/* 1 programmable clock (NIY) */
-/* 1 stereo analog input (line/micro) */
-/* 1 stereo analog output */
-/* Only output levels can be modified */
+/*
+ */
+static void vxpocket_release(dev_link_t *link)
+{
+        if (link->state & DEV_CONFIG) {
+                /* release cs resources */
+                pcmcia_release_configuration(link->handle);
+                pcmcia_release_io(link->handle, &link->io);
+                pcmcia_release_irq(link->handle, &link->irq);
+                link->state &= ~DEV_CONFIG;
+        }
+        if (link->handle) {
+                /* Break the link with Card Services */
+                pcmcia_deregister_client(link->handle);
+                link->handle = NULL;
+        }
+}
 
-#define NUM_CODECS      1
-#define CARD_TYPE       VX_TYPE_VXPOCKET
-#define DEV_INFO        "snd-vxpocket"
+/*
+ * destructor, called from snd_card_free_in_thread()
+ */
+static int snd_vxpocket_dev_free(snd_device_t *device)
+{
+        vx_core_t *chip = device->device_data;
 
-#endif
+        snd_vx_free_firmware(chip);
+        kfree(chip);
+        return 0;
+}
 
-static dev_info_t dev_info = DEV_INFO;
 
-static struct snd_vx_hardware vxp_hw = {
-        .name = CARD_NAME,
-        .type = CARD_TYPE,
+/*
+ * Hardware information
+ */
+
+/* VX-pocket V2
+ *
+ * 1 DSP, 1 sync UER
+ * 1 programmable clock (NIY)
+ * 1 stereo analog input (line/micro)
+ * 1 stereo analog output
+ * Only output levels can be modified
+ */
+
+static struct snd_vx_hardware vxpocket_hw = {
+        .name = "VXPocket",
+        .type = VX_TYPE_VXPOCKET,
 
         /* hardware specs */
-        .num_codecs = NUM_CODECS,
-        .num_ins = NUM_CODECS,
-        .num_outs = NUM_CODECS,
+        .num_codecs = 1,
+        .num_ins = 1,
+        .num_outs = 1,
         .output_level_max = VX_ANALOG_OUT_LEVEL_MAX,
 };      
 
-static struct snd_vxp_entry hw_entry = {
-        .dev_info = &dev_info,
+/* VX-pocket 440
+ *
+ * 1 DSP, 1 sync UER, 1 sync World Clock (NIY)
+ * SMPTE (NIY)
+ * 2 stereo analog input (line/micro)
+ * 2 stereo analog output
+ * Only output levels can be modified
+ * UER, but only for the first two inputs and outputs.
+ */
 
-        /* module parameters */
-        .index_table = index,
-        .id_table = id,
-        .enable_table = enable,
-        .ibl = ibl,
+static struct snd_vx_hardware vxp440_hw = {
+        .name = "VXPocket440",
+        .type = VX_TYPE_VXP440,
+
+        /* hardware specs */
+        .num_codecs = 2,
+        .num_ins = 2,
+        .num_outs = 2,
+        .output_level_max = VX_ANALOG_OUT_LEVEL_MAX,
+};      
+
+
+/*
+ * create vxpocket instance
+ */
+static struct snd_vxpocket *snd_vxpocket_new(snd_card_t *card, int ibl)
+{
+        client_reg_t client_reg;        /* Register with cardmgr */
+        dev_link_t *link;               /* Info for cardmgr */
+        vx_core_t *chip;
+        struct snd_vxpocket *vxp;
+        int ret;
+        static snd_device_ops_t ops = {
+                .dev_free =     snd_vxpocket_dev_free,
+        };
+
+        chip = snd_vx_create(card, &vxpocket_hw, &snd_vxpocket_ops,
+                             sizeof(struct snd_vxpocket) - sizeof(vx_core_t));
+        if (! chip)
+                return NULL;
+
+        if (snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops) < 0) {
+                kfree(chip);
+                return NULL;
+        }
+        chip->ibl.size = ibl;
+
+        vxp = (struct snd_vxpocket *)chip;
+
+        link = &vxp->link;
+        link->priv = chip;
+
+        link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
+        link->io.NumPorts1 = 16;
+
+        link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;
+
+        link->irq.IRQInfo1 = IRQ_LEVEL_ID;
+        link->irq.Handler = &snd_vx_irq_handler;
+        link->irq.Instance = chip;
+
+        link->conf.Attributes = CONF_ENABLE_IRQ;
+        link->conf.Vcc = 50;
+        link->conf.IntType = INT_MEMORY_AND_IO;
+        link->conf.ConfigIndex = 1;
+        link->conf.Present = PRESENT_OPTION;
+
+        /* Register with Card Services */
+        memset(&client_reg, 0, sizeof(client_reg));
+        client_reg.dev_info = &dev_info;
+        client_reg.EventMask = 
+                CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL
+#ifdef CONFIG_PM
+                | CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET
+                | CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME
+#endif
+                ;
+        client_reg.event_handler = &vxpocket_event;
+        client_reg.Version = 0x0210;
+        client_reg.event_callback_args.client_data = link;
+
+        ret = pcmcia_register_client(&link->handle, &client_reg);
+        if (ret != CS_SUCCESS) {
+                cs_error(link->handle, RegisterClient, ret);
+                return NULL;
+        }
+
+        return vxp;
+}
+
+
+/**
+ * snd_vxpocket_assign_resources - initialize the hardware and card instance.
+ * @port: i/o port for the card
+ * @irq: irq number for the card
+ *
+ * this function assigns the specified port and irq, boot the card,
+ * create pcm and control instances, and initialize the rest hardware.
+ *
+ * returns 0 if successful, or a negative error code.
+ */
+static int snd_vxpocket_assign_resources(vx_core_t *chip, int port, int irq)
+{
+        int err;
+        snd_card_t *card = chip->card;
+        struct snd_vxpocket *vxp = (struct snd_vxpocket *)chip;
+
+        snd_printdd(KERN_DEBUG "vxpocket assign resources: port = 0x%x, irq = %d\n", port, irq);
+        vxp->port = port;
+
+        sprintf(card->shortname, "Digigram %s", card->driver);
+        sprintf(card->longname, "%s at 0x%x, irq %i",
+                card->shortname, port, irq);
+
+        chip->irq = irq;
+
+        if ((err = snd_vx_setup_firmware(chip)) < 0)
+                return err;
+
+        return 0;
+}
+
+
+/*
+ * configuration callback
+ */
+
+#define CS_CHECK(fn, ret) \
+do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
+
+static void vxpocket_config(dev_link_t *link)
+{
+        client_handle_t handle = link->handle;
+        vx_core_t *chip = link->priv;
+        struct snd_vxpocket *vxp = (struct snd_vxpocket *)chip;
+        tuple_t tuple;
+        cisparse_t *parse;
+        u_short buf[32];
+        int last_fn, last_ret;
+
+        snd_printdd(KERN_DEBUG "vxpocket_config called\n");
+        parse = kmalloc(sizeof(*parse), GFP_KERNEL);
+        if (! parse) {
+                snd_printk(KERN_ERR "vx: cannot allocate\n");
+                return;
+        }
+        tuple.Attributes = 0;
+        tuple.TupleData = (cisdata_t *)buf;
+        tuple.TupleDataMax = sizeof(buf);
+        tuple.TupleOffset = 0;
+        tuple.DesiredTuple = CISTPL_CONFIG;
+        CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
+        CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
+        CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, parse));
+        link->conf.ConfigBase = parse->config.base;
+        link->conf.Present = parse->config.rmask[0];
+
+        /* redefine hardware record according to the VERSION1 string */
+        tuple.DesiredTuple = CISTPL_VERS_1;
+        CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
+        CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
+        CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, parse));
+        if (! strcmp(parse->version_1.str + parse->version_1.ofs[1], "VX-POCKET")) {
+                snd_printdd("VX-pocket is detected\n");
+        } else {
+                snd_printdd("VX-pocket 440 is detected\n");
+                /* overwrite the hardware information */
+                chip->hw = &vxp440_hw;
+                chip->type = vxp440_hw.type;
+                strcpy(chip->card->driver, vxp440_hw.name);
+        }
+
+        /* Configure card */
+        link->state |= DEV_CONFIG;
+
+        CS_CHECK(RequestIO, pcmcia_request_io(handle, &link->io));
+        CS_CHECK(RequestIRQ, pcmcia_request_irq(link->handle, &link->irq));
+        CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link->handle, &link->conf));
+
+        chip->dev = &handle_to_dev(link->handle);
+
+        if (snd_vxpocket_assign_resources(chip, link->io.BasePort1, link->irq.AssignedIRQ) < 0)
+                goto failed;
+
+        link->dev = &vxp->node;
+        link->state &= ~DEV_CONFIG_PENDING;
+        kfree(parse);
+        return;
+
+cs_failed:
+        cs_error(link->handle, last_fn, last_ret);
+failed:
+        pcmcia_release_configuration(link->handle);
+        pcmcia_release_io(link->handle, &link->io);
+        pcmcia_release_irq(link->handle, &link->irq);
+        link->state &= ~DEV_CONFIG;
+        kfree(parse);
+}
+
+
+/*
+ * event callback
+ */
+static int vxpocket_event(event_t event, int priority, event_callback_args_t *args)
+{
+        dev_link_t *link = args->client_data;
+        vx_core_t *chip = link->priv;
+
+        switch (event) {
+        case CS_EVENT_CARD_REMOVAL:
+                snd_printdd(KERN_DEBUG "CARD_REMOVAL..\n");
+                link->state &= ~DEV_PRESENT;
+                if (link->state & DEV_CONFIG)
+                        chip->chip_status |= VX_STAT_IS_STALE;
+                break;
+        case CS_EVENT_CARD_INSERTION:
+                snd_printdd(KERN_DEBUG "CARD_INSERTION..\n");
+                link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+                vxpocket_config(link);
+                break;
+#ifdef CONFIG_PM
+        case CS_EVENT_PM_SUSPEND:
+                snd_printdd(KERN_DEBUG "SUSPEND\n");
+                link->state |= DEV_SUSPEND;
+                if (chip && chip->card->pm_suspend) {
+                        snd_printdd(KERN_DEBUG "snd_vx_suspend calling\n");
+                        chip->card->pm_suspend(chip->card, PMSG_SUSPEND);
+                }
+                /* Fall through... */
+        case CS_EVENT_RESET_PHYSICAL:
+                snd_printdd(KERN_DEBUG "RESET_PHYSICAL\n");
+                if (link->state & DEV_CONFIG)
+                        pcmcia_release_configuration(link->handle);
+                break;
+        case CS_EVENT_PM_RESUME:
+                snd_printdd(KERN_DEBUG "RESUME\n");
+                link->state &= ~DEV_SUSPEND;
+                /* Fall through... */
+        case CS_EVENT_CARD_RESET:
+                snd_printdd(KERN_DEBUG "CARD_RESET\n");
+                if (DEV_OK(link)) {
+                        //struct snd_vxpocket *vxp = (struct snd_vxpocket *)chip;
+                        snd_printdd(KERN_DEBUG "requestconfig...\n");
+                        pcmcia_request_configuration(link->handle, &link->conf);
+                        if (chip && chip->card->pm_resume) {
+                                snd_printdd(KERN_DEBUG "calling snd_vx_resume\n");
+                                chip->card->pm_resume(chip->card);
+                        }
+                }
+                snd_printdd(KERN_DEBUG "resume done!\n");
+                break;
+#endif
+        }
+        return 0;
+}
 
-        /* h/w config */
-        .hardware = &vxp_hw,
-        .ops = &snd_vxpocket_ops,
-};
 
 /*
  */
 static dev_link_t *vxp_attach(void)
 {
-        return snd_vxpocket_attach(&hw_entry);
+        snd_card_t *card;
+        struct snd_vxpocket *vxp;
+        int i;
+
+        /* find an empty slot from the card list */
+        for (i = 0; i < SNDRV_CARDS; i++) {
+                if (! card_alloc & (1 << i))
+                        break;
+        }
+        if (i >= SNDRV_CARDS) {
+                snd_printk(KERN_ERR "vxpocket: too many cards found\n");
+                return NULL;
+        }
+        if (! enable[i])
+                return NULL; /* disabled explicitly */
+
+        /* ok, create a card instance */
+        card = snd_card_new(index[i], id[i], THIS_MODULE, 0);
+        if (card == NULL) {
+                snd_printk(KERN_ERR "vxpocket: cannot create a card instance\n");
+                return NULL;
+        }
+
+        vxp = snd_vxpocket_new(card, ibl[i]);
+        if (! vxp) {
+                snd_card_free(card);
+                return NULL;
+        }
+
+        vxp->index = index[i];
+        card_alloc |= 1 << i;
+
+        /* Chain drivers */
+        vxp->link.next = dev_list;
+        dev_list = &vxp->link;
+
+        return &vxp->link;
 }
 
 static void vxp_detach(dev_link_t *link)
 {
-        snd_vxpocket_detach(&hw_entry, link);
+        struct snd_vxpocket *vxp;
+        vx_core_t *chip;
+        dev_link_t **linkp;
+
+        if (! link)
+                return;
+
+        vxp = link->priv;
+        chip = (vx_core_t *)vxp;
+        card_alloc &= ~(1 << vxp->index);
+
+        /* Remove the interface data from the linked list */
+        for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
+                if (*linkp == link) {
+                        *linkp = link->next;
+                        break;
+                }
+
+        chip->chip_status |= VX_STAT_IS_STALE; /* to be sure */
+        snd_card_disconnect(chip->card);
+        vxpocket_release(link);
+        snd_card_free_in_thread(chip->card);
 }
 
 /*
@@ -137,7 +456,7 @@ MODULE_DEVICE_TABLE(pcmcia, vxp_ids);
 static struct pcmcia_driver vxp_cs_driver = {
         .owner          = THIS_MODULE,
         .drv            = {
-                .name   = DEV_INFO,
+                .name   = "snd-vxpocket",
         },
         .attach         = vxp_attach,
         .detach         = vxp_detach,
@@ -152,7 +471,7 @@ static int __init init_vxpocket(void)
 static void __exit exit_vxpocket(void)
 {
         pcmcia_unregister_driver(&vxp_cs_driver);
-        BUG_ON(hw_entry.dev_list != NULL);
+        BUG_ON(dev_list != NULL);
 }
 
 module_init(init_vxpocket);