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path: root/drivers/media/video/ivtv/ivtv-gpio.c
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Diffstat (limited to 'drivers/media/video/ivtv/ivtv-gpio.c')
-rw-r--r--drivers/media/video/ivtv/ivtv-gpio.c307
1 files changed, 307 insertions, 0 deletions
diff --git a/drivers/media/video/ivtv/ivtv-gpio.c b/drivers/media/video/ivtv/ivtv-gpio.c
new file mode 100644
index 000000000000..bc8f8ca2961f
--- /dev/null
+++ b/drivers/media/video/ivtv/ivtv-gpio.c
@@ -0,0 +1,307 @@
+/*
+ gpio functions.
+ Merging GPIO support into driver:
+ Copyright (C) 2004 Chris Kennedy <c@groovy.org>
+ Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "ivtv-driver.h"
+#include "ivtv-cards.h"
+#include "ivtv-gpio.h"
+#include <media/tuner.h>
+
+/*
+ * GPIO assignment of Yuan MPG600/MPG160
+ *
+ * bit 15 14 13 12 | 11 10 9 8 | 7 6 5 4 | 3 2 1 0
+ * OUTPUT IN1 IN0 AM3 AM2 AM1 AM0
+ * INPUT DM1 DM0
+ *
+ * IN* : Input selection
+ * IN1 IN0
+ * 1 1 N/A
+ * 1 0 Line
+ * 0 1 N/A
+ * 0 0 Tuner
+ *
+ * AM* : Audio Mode
+ * AM3 0: Normal 1: Mixed(Sub+Main channel)
+ * AM2 0: Subchannel 1: Main channel
+ * AM1 0: Stereo 1: Mono
+ * AM0 0: Normal 1: Mute
+ *
+ * DM* : Detected tuner audio Mode
+ * DM1 0: Stereo 1: Mono
+ * DM0 0: Multiplex 1: Normal
+ *
+ * GPIO Initial Settings
+ * MPG600 MPG160
+ * DIR 0x3080 0x7080
+ * OUTPUT 0x000C 0x400C
+ *
+ * Special thanks to Makoto Iguchi <iguchi@tahoo.org> and Mr. Anonymous
+ * for analyzing GPIO of MPG160.
+ *
+ *****************************************************************************
+ *
+ * GPIO assignment of Avermedia M179 (per information direct from AVerMedia)
+ *
+ * bit 15 14 13 12 | 11 10 9 8 | 7 6 5 4 | 3 2 1 0
+ * OUTPUT IN0 AM0 IN1 AM1 AM2 IN2 BR0 BR1
+ * INPUT
+ *
+ * IN* : Input selection
+ * IN0 IN1 IN2
+ * * 1 * Mute
+ * 0 0 0 Line-In
+ * 1 0 0 TV Tuner Audio
+ * 0 0 1 FM Audio
+ * 1 0 1 Mute
+ *
+ * AM* : Audio Mode
+ * AM0 AM1 AM2
+ * 0 0 0 TV Tuner Audio: L_OUT=(L+R)/2, R_OUT=SAP
+ * 0 0 1 TV Tuner Audio: L_OUT=R_OUT=SAP (SAP)
+ * 0 1 0 TV Tuner Audio: L_OUT=L, R_OUT=R (stereo)
+ * 0 1 1 TV Tuner Audio: mute
+ * 1 * * TV Tuner Audio: L_OUT=R_OUT=(L+R)/2 (mono)
+ *
+ * BR* : Audio Sample Rate (BR stands for bitrate for some reason)
+ * BR0 BR1
+ * 0 0 32 kHz
+ * 0 1 44.1 kHz
+ * 1 0 48 kHz
+ *
+ * DM* : Detected tuner audio Mode
+ * Unknown currently
+ *
+ * Special thanks to AVerMedia Technologies, Inc. and Jiun-Kuei Jung at
+ * AVerMedia for providing the GPIO information used to add support
+ * for the M179 cards.
+ */
+
+/********************* GPIO stuffs *********************/
+
+/* GPIO registers */
+#define IVTV_REG_GPIO_IN 0x9008
+#define IVTV_REG_GPIO_OUT 0x900c
+#define IVTV_REG_GPIO_DIR 0x9020
+
+void ivtv_reset_ir_gpio(struct ivtv *itv)
+{
+ int curdir, curout;
+
+ if (itv->card->type != IVTV_CARD_PVR_150)
+ return;
+ IVTV_DEBUG_INFO("Resetting PVR150 IR\n");
+ curout = read_reg(IVTV_REG_GPIO_OUT);
+ curdir = read_reg(IVTV_REG_GPIO_DIR);
+ curdir |= 0x80;
+ write_reg(curdir, IVTV_REG_GPIO_DIR);
+ curout = (curout & ~0xF) | 1;
+ write_reg(curout, IVTV_REG_GPIO_OUT);
+ /* We could use something else for smaller time */
+ current->state = TASK_INTERRUPTIBLE;
+ schedule_timeout(1);
+ curout |= 2;
+ write_reg(curout, IVTV_REG_GPIO_OUT);
+ curdir &= ~0x80;
+ write_reg(curdir, IVTV_REG_GPIO_DIR);
+}
+
+#ifdef HAVE_XC3028
+int ivtv_reset_tuner_gpio(enum v4l2_tuner_type mode, void *priv, int ptr)
+{
+ int curdir, curout;
+ struct ivtv *itv = (struct ivtv *) priv;
+
+ if (itv->card->type != IVTV_CARD_PG600V2 || itv->options.tuner != TUNER_XCEIVE_XC3028)
+ return -EINVAL;
+ IVTV_INFO("Resetting tuner.\n");
+ curout = read_reg(IVTV_REG_GPIO_OUT);
+ curdir = read_reg(IVTV_REG_GPIO_DIR);
+ curdir |= (1 << 12); /* GPIO bit 12 */
+
+ curout &= ~(1 << 12);
+ write_reg(curout, IVTV_REG_GPIO_OUT);
+ current->state = TASK_INTERRUPTIBLE;
+ schedule_timeout(1);
+
+ curout |= (1 << 12);
+ write_reg(curout, IVTV_REG_GPIO_OUT);
+ current->state = TASK_INTERRUPTIBLE;
+ schedule_timeout(1);
+
+ return 0;
+}
+#endif
+
+void ivtv_gpio_init(struct ivtv *itv)
+{
+ if (itv->card->gpio_init.direction == 0)
+ return;
+
+ IVTV_DEBUG_INFO("GPIO initial dir: %08x out: %08x\n",
+ read_reg(IVTV_REG_GPIO_DIR), read_reg(IVTV_REG_GPIO_OUT));
+
+ /* init output data then direction */
+ write_reg(itv->card->gpio_init.initial_value, IVTV_REG_GPIO_OUT);
+ write_reg(itv->card->gpio_init.direction, IVTV_REG_GPIO_DIR);
+}
+
+static struct v4l2_queryctrl gpio_ctrl_mute = {
+ .id = V4L2_CID_AUDIO_MUTE,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Mute",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 1,
+ .flags = 0,
+};
+
+int ivtv_gpio(struct ivtv *itv, unsigned int command, void *arg)
+{
+ struct v4l2_tuner *tuner = arg;
+ struct v4l2_control *ctrl = arg;
+ struct v4l2_routing *route = arg;
+ u16 mask, data;
+
+ switch (command) {
+ case VIDIOC_INT_AUDIO_CLOCK_FREQ:
+ mask = itv->card->gpio_audio_freq.mask;
+ switch (*(u32 *)arg) {
+ case 32000:
+ data = itv->card->gpio_audio_freq.f32000;
+ break;
+ case 44100:
+ data = itv->card->gpio_audio_freq.f44100;
+ break;
+ case 48000:
+ default:
+ data = itv->card->gpio_audio_freq.f48000;
+ break;
+ }
+ break;
+
+ case VIDIOC_G_TUNER:
+ mask = itv->card->gpio_audio_detect.mask;
+ if (mask == 0 || (read_reg(IVTV_REG_GPIO_IN) & mask))
+ tuner->rxsubchans = V4L2_TUNER_MODE_STEREO |
+ V4L2_TUNER_MODE_LANG1 | V4L2_TUNER_MODE_LANG2;
+ else
+ tuner->rxsubchans = V4L2_TUNER_SUB_MONO;
+ return 0;
+
+ case VIDIOC_S_TUNER:
+ mask = itv->card->gpio_audio_mode.mask;
+ switch (tuner->audmode) {
+ case V4L2_TUNER_MODE_LANG1:
+ data = itv->card->gpio_audio_mode.lang1;
+ break;
+ case V4L2_TUNER_MODE_LANG2:
+ data = itv->card->gpio_audio_mode.lang2;
+ break;
+ case V4L2_TUNER_MODE_MONO:
+ data = itv->card->gpio_audio_mode.mono;
+ break;
+ case V4L2_TUNER_MODE_STEREO:
+ case V4L2_TUNER_MODE_LANG1_LANG2:
+ default:
+ data = itv->card->gpio_audio_mode.stereo;
+ break;
+ }
+ break;
+
+ case AUDC_SET_RADIO:
+ mask = itv->card->gpio_audio_input.mask;
+ data = itv->card->gpio_audio_input.radio;
+ break;
+
+ case VIDIOC_S_STD:
+ mask = itv->card->gpio_audio_input.mask;
+ data = itv->card->gpio_audio_input.tuner;
+ break;
+
+ case VIDIOC_INT_S_AUDIO_ROUTING:
+ if (route->input > 2)
+ return -EINVAL;
+ mask = itv->card->gpio_audio_input.mask;
+ switch (route->input) {
+ case 0:
+ data = itv->card->gpio_audio_input.tuner;
+ break;
+ case 1:
+ data = itv->card->gpio_audio_input.linein;
+ break;
+ case 2:
+ default:
+ data = itv->card->gpio_audio_input.radio;
+ break;
+ }
+ break;
+
+ case VIDIOC_G_CTRL:
+ if (ctrl->id != V4L2_CID_AUDIO_MUTE)
+ return -EINVAL;
+ mask = itv->card->gpio_audio_mute.mask;
+ data = itv->card->gpio_audio_mute.mute;
+ ctrl->value = (read_reg(IVTV_REG_GPIO_OUT) & mask) == data;
+ return 0;
+
+ case VIDIOC_S_CTRL:
+ if (ctrl->id != V4L2_CID_AUDIO_MUTE)
+ return -EINVAL;
+ mask = itv->card->gpio_audio_mute.mask;
+ data = ctrl->value ? itv->card->gpio_audio_mute.mute : 0;
+ break;
+
+ case VIDIOC_QUERYCTRL:
+ {
+ struct v4l2_queryctrl *qc = arg;
+
+ if (qc->id != V4L2_CID_AUDIO_MUTE)
+ return -EINVAL;
+ *qc = gpio_ctrl_mute;
+ return 0;
+ }
+
+ case VIDIOC_LOG_STATUS:
+ IVTV_INFO("GPIO status: DIR=0x%04x OUT=0x%04x IN=0x%04x\n",
+ read_reg(IVTV_REG_GPIO_DIR), read_reg(IVTV_REG_GPIO_OUT),
+ read_reg(IVTV_REG_GPIO_IN));
+ return 0;
+
+ case VIDIOC_INT_S_VIDEO_ROUTING:
+ if (route->input > 2) /* 0:Tuner 1:Composite 2:S-Video */
+ return -EINVAL;
+ mask = itv->card->gpio_video_input.mask;
+ if (route->input == 0)
+ data = itv->card->gpio_video_input.tuner;
+ else if (route->input == 1)
+ data = itv->card->gpio_video_input.composite;
+ else
+ data = itv->card->gpio_video_input.svideo;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+ if (mask)
+ write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
+ return 0;
+}