[ALSA] add CMI8788 driver

Add the snd-oxygen driver for the C-Media CMI8788 (Oxygen) chip, used on
the Asound A-8788, AuzenTech X-Meridian, Bgears b-Enspirer,
Club3D Theatron DTS, HT-Omega Claro, Razer Barracuda AC-1,
Sondigo Inferno, and TempoTec HIFIER sound cards.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

1 files changed, 314 insertions, 0 deletions

diff --git a/sound/pci/oxygen/oxygen.c b/sound/pci/oxygen/oxygen.c
new file mode 100644
index 000000000000..bfef5aba0b9d
--- /dev/null
+++ b/sound/pci/oxygen/oxygen.c
@@ -0,0 +1,314 @@
+/*
+ * C-Media CMI8788 driver for C-Media's reference design and for the X-Meridian
+ *
+ * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
+ *
+ *
+ *  This driver is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License, version 2.
+ *
+ *  This driver 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 driver; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+
+/*
+ * SPI 0 -> 1st AK4396 (front)
+ * SPI 1 -> 2nd AK4396 (side)
+ * SPI 2 -> 3rd AK4396 (center/LFE)
+ * SPI 3 -> WM8785
+ * SPI 4 -> 4th AK4396 (rear)
+ *
+ * GPIO 0 -> DFS0 of AK5385
+ * GPIO 1 -> DFS1 of AK5385
+ */
+
+#include <sound/driver.h>
+#include <linux/pci.h>
+#include <sound/core.h>
+#include <sound/initval.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/tlv.h>
+#include "oxygen.h"
+
+MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
+MODULE_DESCRIPTION("C-Media CMI8788 driver");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("{{C-Media,CMI8788}}");
+
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
+static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
+static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
+
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "card index");
+module_param_array(id, charp, NULL, 0444);
+MODULE_PARM_DESC(id, "ID string");
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "enable card");
+
+static struct pci_device_id oxygen_ids[] __devinitdata = {
+        { OXYGEN_PCI_SUBID(0x10b0, 0x0216) },
+        { OXYGEN_PCI_SUBID(0x10b0, 0x0218) },
+        { OXYGEN_PCI_SUBID(0x10b0, 0x0219) },
+        { OXYGEN_PCI_SUBID(0x13f6, 0x0001) },
+        { OXYGEN_PCI_SUBID(0x13f6, 0x0010) },
+        { OXYGEN_PCI_SUBID(0x13f6, 0x8788) },
+        { OXYGEN_PCI_SUBID(0x147a, 0xa017) },
+        { OXYGEN_PCI_SUBID(0x14c3, 0x1710) },
+        { OXYGEN_PCI_SUBID(0x14c3, 0x1711) },
+        { OXYGEN_PCI_SUBID(0x1a58, 0x0910) },
+        { OXYGEN_PCI_SUBID(0x415a, 0x5431), .driver_data = 1 },
+        { OXYGEN_PCI_SUBID(0x7284, 0x9761) },
+        { }
+};
+MODULE_DEVICE_TABLE(pci, oxygen_ids);
+
+#define AK4396_WRITE    0x2000
+
+/* register 0 */
+#define AK4396_RSTN             0x01
+#define AK4396_DIF_24_MSB       0x04
+/* register 1 */
+#define AK4396_SMUTE            0x01
+#define AK4396_DEM_OFF          0x02
+#define AK4396_DFS_MASK         0x18
+#define AK4396_DFS_NORMAL       0x00
+#define AK4396_DFS_DOUBLE       0x08
+#define AK4396_DFS_QUAD         0x10
+
+/* register 0 */
+#define WM8785_OSR_SINGLE       0x000
+#define WM8785_OSR_DOUBLE       0x008
+#define WM8785_OSR_QUAD         0x010
+#define WM8785_FORMAT_LJUST     0x020
+#define WM8785_FORMAT_I2S       0x040
+/* register 1 */
+#define WM8785_WL_16            0x000
+#define WM8785_WL_20            0x001
+#define WM8785_WL_24            0x002
+#define WM8785_WL_32            0x003
+
+static void ak4396_write(struct oxygen *chip, unsigned int codec,
+                         u8 reg, u8 value)
+{
+        /* maps ALSA channel pair number to SPI output */
+        static const u8 codec_spi_map[4] = {
+                0, 4, 2, 1
+        };
+        oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER_WRITE |
+                         OXYGEN_SPI_DATA_LENGTH_2 |
+                         (codec_spi_map[codec] << OXYGEN_SPI_CODEC_SHIFT) |
+                         OXYGEN_SPI_MAGIC,
+                         AK4396_WRITE | (reg << 8) | value);
+}
+
+static void wm8785_write(struct oxygen *chip, u8 reg, unsigned int value)
+{
+        oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER_WRITE |
+                         OXYGEN_SPI_DATA_LENGTH_2 |
+                         (3 << OXYGEN_SPI_CODEC_SHIFT),
+                         (reg << 9) | value);
+}
+
+static void ak4396_init(struct oxygen *chip)
+{
+        unsigned int i;
+
+        chip->ak4396_reg1 = AK4396_DEM_OFF | AK4396_DFS_NORMAL;
+        for (i = 0; i < 4; ++i) {
+                ak4396_write(chip, i, 0, AK4396_DIF_24_MSB | AK4396_RSTN);
+                ak4396_write(chip, i, 1, chip->ak4396_reg1);
+                ak4396_write(chip, i, 2, 0);
+                ak4396_write(chip, i, 3, 0xff);
+                ak4396_write(chip, i, 4, 0xff);
+        }
+        snd_component_add(chip->card, "AK4396");
+}
+
+static void ak5385_init(struct oxygen *chip)
+{
+        oxygen_set_bits16(chip, OXYGEN_GPIO_CONTROL, 0x0003);
+        oxygen_clear_bits16(chip, OXYGEN_GPIO_DATA, 0x0003);
+        snd_component_add(chip->card, "AK5385");
+}
+
+static void wm8785_init(struct oxygen *chip)
+{
+        wm8785_write(chip, 7, 0);
+        wm8785_write(chip, 0, WM8785_FORMAT_LJUST | WM8785_OSR_SINGLE);
+        wm8785_write(chip, 1, WM8785_WL_24);
+        snd_component_add(chip->card, "WM8785");
+}
+
+static void generic_init(struct oxygen *chip)
+{
+        ak4396_init(chip);
+        wm8785_init(chip);
+}
+
+static void meridian_init(struct oxygen *chip)
+{
+        ak4396_init(chip);
+        ak5385_init(chip);
+}
+
+static void generic_cleanup(struct oxygen *chip)
+{
+}
+
+static void set_ak4396_params(struct oxygen *chip,
+                              struct snd_pcm_hw_params *params)
+{
+        unsigned int i;
+        u8 value;
+
+        value = chip->ak4396_reg1 & ~AK4396_DFS_MASK;
+        if (params_rate(params) <= 54000)
+                value |= AK4396_DFS_NORMAL;
+        else if (params_rate(params) < 120000)
+                value |= AK4396_DFS_DOUBLE;
+        else
+                value |= AK4396_DFS_QUAD;
+        chip->ak4396_reg1 = value;
+        for (i = 0; i < 4; ++i) {
+                ak4396_write(chip, i, 0, AK4396_DIF_24_MSB);
+                ak4396_write(chip, i, 1, value);
+                ak4396_write(chip, i, 0, AK4396_DIF_24_MSB | AK4396_RSTN);
+        }
+}
+
+static void update_ak4396_volume(struct oxygen *chip)
+{
+        unsigned int i;
+
+        for (i = 0; i < 4; ++i) {
+                ak4396_write(chip, i, 3, chip->dac_volume[i * 2]);
+                ak4396_write(chip, i, 4, chip->dac_volume[i * 2 + 1]);
+        }
+}
+
+static void update_ak4396_mute(struct oxygen *chip)
+{
+        unsigned int i;
+        u8 value;
+
+        value = chip->ak4396_reg1 & ~AK4396_SMUTE;
+        if (chip->dac_mute)
+                value |= AK4396_SMUTE;
+        for (i = 0; i < 4; ++i)
+                ak4396_write(chip, i, 1, value);
+}
+
+static void set_wm8785_params(struct oxygen *chip,
+                              struct snd_pcm_hw_params *params)
+{
+        unsigned int value;
+
+        wm8785_write(chip, 7, 0);
+
+        value = WM8785_FORMAT_LJUST;
+        if (params_rate(params) == 96000)
+                value |= WM8785_OSR_DOUBLE;
+        else if (params_rate(params) == 192000)
+                value |= WM8785_OSR_QUAD;
+        else
+                value |= WM8785_OSR_SINGLE;
+        wm8785_write(chip, 0, value);
+
+        if (snd_pcm_format_width(params_format(params)) <= 16)
+                value = WM8785_WL_16;
+        else
+                value = WM8785_WL_24;
+        wm8785_write(chip, 1, value);
+}
+
+static void set_ak5385_params(struct oxygen *chip,
+                              struct snd_pcm_hw_params *params)
+{
+        unsigned int value;
+
+        if (params_rate(params) <= 54000)
+                value = 0;
+        else if (params_rate(params) <= 108000)
+                value = 1;
+        else
+                value = 2;
+        oxygen_write16_masked(chip, OXYGEN_GPIO_DATA, value, 0x0003);
+}
+
+static const DECLARE_TLV_DB_LINEAR(ak4396_db_scale, TLV_DB_GAIN_MUTE, 0);
+
+static const struct oxygen_model model_generic = {
+        .shortname = "C-Media CMI8788",
+        .longname = "C-Media Oxygen HD Audio",
+        .chip = "CMI8788",
+        .owner = THIS_MODULE,
+        .init = generic_init,
+        .cleanup = generic_cleanup,
+        .set_dac_params = set_ak4396_params,
+        .set_adc_params = set_wm8785_params,
+        .update_dac_volume = update_ak4396_volume,
+        .update_dac_mute = update_ak4396_mute,
+        .dac_tlv = ak4396_db_scale,
+};
+static const struct oxygen_model model_meridian = {
+        .shortname = "C-Media CMI8788",
+        .longname = "C-Media Oxygen HD Audio",
+        .chip = "CMI8788",
+        .owner = THIS_MODULE,
+        .init = meridian_init,
+        .cleanup = generic_cleanup,
+        .set_dac_params = set_ak4396_params,
+        .set_adc_params = set_ak5385_params,
+        .update_dac_volume = update_ak4396_volume,
+        .update_dac_mute = update_ak4396_mute,
+        .dac_tlv = ak4396_db_scale,
+        .record_from_dma_b = 1,
+};
+
+static int __devinit generic_oxygen_probe(struct pci_dev *pci,
+                                          const struct pci_device_id *pci_id)
+{
+        static int dev;
+        const struct oxygen_model *model;
+        int err;
+
+        if (dev >= SNDRV_CARDS)
+                return -ENODEV;
+        if (!enable[dev]) {
+                ++dev;
+                return -ENOENT;
+        }
+        model = pci_id->driver_data ? &model_meridian : &model_generic;
+        err = oxygen_pci_probe(pci, index[dev], id[dev], model);
+        if (err >= 0)
+                ++dev;
+        return err;
+}
+
+static struct pci_driver oxygen_driver = {
+        .name = "CMI8788",
+        .id_table = oxygen_ids,
+        .probe = generic_oxygen_probe,
+        .remove = __devexit_p(oxygen_pci_remove),
+};
+
+static int __init alsa_card_oxygen_init(void)
+{
+        return pci_register_driver(&oxygen_driver);
+}
+
+static void __exit alsa_card_oxygen_exit(void)
+{
+        pci_unregister_driver(&oxygen_driver);
+}
+
+module_init(alsa_card_oxygen_init)
+module_exit(alsa_card_oxygen_exit)