1 files changed, 128 insertions, 0 deletions

diff --git a/sound/pci/oxygen/xonar_hdmi.c b/sound/pci/oxygen/xonar_hdmi.c
new file mode 100644
index 000000000000..b12db1f1cea9
--- /dev/null
+++ b/sound/pci/oxygen/xonar_hdmi.c
@@ -0,0 +1,128 @@
+/*
+ * helper functions for HDMI models (Xonar HDAV1.3)
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <sound/asoundef.h>
+#include <sound/control.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/tlv.h>
+#include "xonar.h"
+
+static void hdmi_write_command(struct oxygen *chip, u8 command,
+                               unsigned int count, const u8 *params)
+{
+        unsigned int i;
+        u8 checksum;
+
+        oxygen_write_uart(chip, 0xfb);
+        oxygen_write_uart(chip, 0xef);
+        oxygen_write_uart(chip, command);
+        oxygen_write_uart(chip, count);
+        for (i = 0; i < count; ++i)
+                oxygen_write_uart(chip, params[i]);
+        checksum = 0xfb + 0xef + command + count;
+        for (i = 0; i < count; ++i)
+                checksum += params[i];
+        oxygen_write_uart(chip, checksum);
+}
+
+static void xonar_hdmi_init_commands(struct oxygen *chip,
+                                     struct xonar_hdmi *hdmi)
+{
+        u8 param;
+
+        oxygen_reset_uart(chip);
+        param = 0;
+        hdmi_write_command(chip, 0x61, 1, &param);
+        param = 1;
+        hdmi_write_command(chip, 0x74, 1, &param);
+        hdmi_write_command(chip, 0x54, 5, hdmi->params);
+}
+
+void xonar_hdmi_init(struct oxygen *chip, struct xonar_hdmi *hdmi)
+{
+        hdmi->params[1] = IEC958_AES3_CON_FS_48000;
+        hdmi->params[4] = 1;
+        xonar_hdmi_init_commands(chip, hdmi);
+}
+
+void xonar_hdmi_cleanup(struct oxygen *chip)
+{
+        u8 param = 0;
+
+        hdmi_write_command(chip, 0x74, 1, &param);
+}
+
+void xonar_hdmi_resume(struct oxygen *chip, struct xonar_hdmi *hdmi)
+{
+        xonar_hdmi_init_commands(chip, hdmi);
+}
+
+void xonar_hdmi_pcm_hardware_filter(unsigned int channel,
+                                    struct snd_pcm_hardware *hardware)
+{
+        if (channel == PCM_MULTICH) {
+                hardware->rates = SNDRV_PCM_RATE_44100 |
+                                  SNDRV_PCM_RATE_48000 |
+                                  SNDRV_PCM_RATE_96000 |
+                                  SNDRV_PCM_RATE_192000;
+                hardware->rate_min = 44100;
+        }
+}
+
+void xonar_set_hdmi_params(struct oxygen *chip, struct xonar_hdmi *hdmi,
+                           struct snd_pcm_hw_params *params)
+{
+        hdmi->params[0] = 0; /* 1 = non-audio */
+        switch (params_rate(params)) {
+        case 44100:
+                hdmi->params[1] = IEC958_AES3_CON_FS_44100;
+                break;
+        case 48000:
+                hdmi->params[1] = IEC958_AES3_CON_FS_48000;
+                break;
+        default: /* 96000 */
+                hdmi->params[1] = IEC958_AES3_CON_FS_96000;
+                break;
+        case 192000:
+                hdmi->params[1] = IEC958_AES3_CON_FS_192000;
+                break;
+        }
+        hdmi->params[2] = params_channels(params) / 2 - 1;
+        if (params_format(params) == SNDRV_PCM_FORMAT_S16_LE)
+                hdmi->params[3] = 0;
+        else
+                hdmi->params[3] = 0xc0;
+        hdmi->params[4] = 1; /* ? */
+        hdmi_write_command(chip, 0x54, 5, hdmi->params);
+}
+
+void xonar_hdmi_uart_input(struct oxygen *chip)
+{
+        if (chip->uart_input_count >= 2 &&
+            chip->uart_input[chip->uart_input_count - 2] == 'O' &&
+            chip->uart_input[chip->uart_input_count - 1] == 'K') {
+                printk(KERN_DEBUG "message from HDMI chip received:\n");
+                print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
+                                     chip->uart_input, chip->uart_input_count);
+                chip->uart_input_count = 0;
+        }
+}