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path: root/drivers/media/pci/ivtv/ivtv-gpio.c
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-rw-r--r--drivers/media/pci/ivtv/ivtv-gpio.c355
1 files changed, 355 insertions, 0 deletions
diff --git a/drivers/media/pci/ivtv/ivtv-gpio.c b/drivers/media/pci/ivtv/ivtv-gpio.c
new file mode 100644
index 0000000000..6434c0d03a
--- /dev/null
+++ b/drivers/media/pci/ivtv/ivtv-gpio.c
@@ -0,0 +1,355 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ gpio functions.
+ Merging GPIO support into driver:
+ Copyright (C) 2004 Chris Kennedy <c@groovy.org>
+ Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl>
+
+ */
+
+#include "ivtv-driver.h"
+#include "ivtv-cards.h"
+#include "ivtv-gpio.h"
+#include "xc2028.h"
+#include <media/tuner.h>
+#include <media/v4l2-ctrls.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 */
+ schedule_timeout_interruptible(msecs_to_jiffies(1));
+ curout |= 2;
+ write_reg(curout, IVTV_REG_GPIO_OUT);
+ curdir &= ~0x80;
+ write_reg(curdir, IVTV_REG_GPIO_DIR);
+}
+
+/* Xceive tuner reset function */
+int ivtv_reset_tuner_gpio(void *dev, int component, int cmd, int value)
+{
+ struct i2c_algo_bit_data *algo = dev;
+ struct ivtv *itv = algo->data;
+ u32 curout;
+
+ if (cmd != XC2028_TUNER_RESET)
+ return 0;
+ IVTV_DEBUG_INFO("Resetting tuner\n");
+ curout = read_reg(IVTV_REG_GPIO_OUT);
+ curout &= ~(1 << itv->card->xceive_pin);
+ write_reg(curout, IVTV_REG_GPIO_OUT);
+ schedule_timeout_interruptible(msecs_to_jiffies(1));
+
+ curout |= 1 << itv->card->xceive_pin;
+ write_reg(curout, IVTV_REG_GPIO_OUT);
+ schedule_timeout_interruptible(msecs_to_jiffies(1));
+ return 0;
+}
+
+static inline struct ivtv *sd_to_ivtv(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct ivtv, sd_gpio);
+}
+
+static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
+{
+ return &container_of(ctrl->handler, struct ivtv, hdl_gpio)->sd_gpio;
+}
+
+static int subdev_s_clock_freq(struct v4l2_subdev *sd, u32 freq)
+{
+ struct ivtv *itv = sd_to_ivtv(sd);
+ u16 mask, data;
+
+ mask = itv->card->gpio_audio_freq.mask;
+ switch (freq) {
+ 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;
+ }
+ if (mask)
+ write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
+ return 0;
+}
+
+static int subdev_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
+{
+ struct ivtv *itv = sd_to_ivtv(sd);
+ u16 mask;
+
+ mask = itv->card->gpio_audio_detect.mask;
+ if (mask == 0 || (read_reg(IVTV_REG_GPIO_IN) & mask))
+ vt->rxsubchans = V4L2_TUNER_SUB_STEREO |
+ V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
+ else
+ vt->rxsubchans = V4L2_TUNER_SUB_MONO;
+ return 0;
+}
+
+static int subdev_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *vt)
+{
+ struct ivtv *itv = sd_to_ivtv(sd);
+ u16 mask, data;
+
+ mask = itv->card->gpio_audio_mode.mask;
+ switch (vt->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;
+ }
+ if (mask)
+ write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
+ return 0;
+}
+
+static int subdev_s_radio(struct v4l2_subdev *sd)
+{
+ struct ivtv *itv = sd_to_ivtv(sd);
+ u16 mask, data;
+
+ mask = itv->card->gpio_audio_input.mask;
+ data = itv->card->gpio_audio_input.radio;
+ if (mask)
+ write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
+ return 0;
+}
+
+static int subdev_s_audio_routing(struct v4l2_subdev *sd,
+ u32 input, u32 output, u32 config)
+{
+ struct ivtv *itv = sd_to_ivtv(sd);
+ u16 mask, data;
+
+ if (input > 2)
+ return -EINVAL;
+ mask = itv->card->gpio_audio_input.mask;
+ switch (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;
+ }
+ if (mask)
+ write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
+ return 0;
+}
+
+static int subdev_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct v4l2_subdev *sd = to_sd(ctrl);
+ struct ivtv *itv = sd_to_ivtv(sd);
+ u16 mask, data;
+
+ switch (ctrl->id) {
+ case V4L2_CID_AUDIO_MUTE:
+ mask = itv->card->gpio_audio_mute.mask;
+ data = ctrl->val ? itv->card->gpio_audio_mute.mute : 0;
+ if (mask)
+ write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) |
+ (data & mask), IVTV_REG_GPIO_OUT);
+ return 0;
+ }
+ return -EINVAL;
+}
+
+
+static int subdev_log_status(struct v4l2_subdev *sd)
+{
+ struct ivtv *itv = sd_to_ivtv(sd);
+
+ 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));
+ v4l2_ctrl_handler_log_status(&itv->hdl_gpio, sd->name);
+ return 0;
+}
+
+static int subdev_s_video_routing(struct v4l2_subdev *sd,
+ u32 input, u32 output, u32 config)
+{
+ struct ivtv *itv = sd_to_ivtv(sd);
+ u16 mask, data;
+
+ if (input > 2) /* 0:Tuner 1:Composite 2:S-Video */
+ return -EINVAL;
+ mask = itv->card->gpio_video_input.mask;
+ if (input == 0)
+ data = itv->card->gpio_video_input.tuner;
+ else if (input == 1)
+ data = itv->card->gpio_video_input.composite;
+ else
+ data = itv->card->gpio_video_input.svideo;
+ if (mask)
+ write_reg((read_reg(IVTV_REG_GPIO_OUT) & ~mask) | (data & mask), IVTV_REG_GPIO_OUT);
+ return 0;
+}
+
+static const struct v4l2_ctrl_ops gpio_ctrl_ops = {
+ .s_ctrl = subdev_s_ctrl,
+};
+
+static const struct v4l2_subdev_core_ops subdev_core_ops = {
+ .log_status = subdev_log_status,
+};
+
+static const struct v4l2_subdev_tuner_ops subdev_tuner_ops = {
+ .s_radio = subdev_s_radio,
+ .g_tuner = subdev_g_tuner,
+ .s_tuner = subdev_s_tuner,
+};
+
+static const struct v4l2_subdev_audio_ops subdev_audio_ops = {
+ .s_clock_freq = subdev_s_clock_freq,
+ .s_routing = subdev_s_audio_routing,
+};
+
+static const struct v4l2_subdev_video_ops subdev_video_ops = {
+ .s_routing = subdev_s_video_routing,
+};
+
+static const struct v4l2_subdev_ops subdev_ops = {
+ .core = &subdev_core_ops,
+ .tuner = &subdev_tuner_ops,
+ .audio = &subdev_audio_ops,
+ .video = &subdev_video_ops,
+};
+
+int ivtv_gpio_init(struct ivtv *itv)
+{
+ u16 pin = 0;
+
+ if (itv->card->xceive_pin)
+ pin = 1 << itv->card->xceive_pin;
+
+ if ((itv->card->gpio_init.direction | pin) == 0)
+ return 0;
+
+ 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 | pin, IVTV_REG_GPIO_OUT);
+ write_reg(itv->card->gpio_init.direction | pin, IVTV_REG_GPIO_DIR);
+ v4l2_subdev_init(&itv->sd_gpio, &subdev_ops);
+ snprintf(itv->sd_gpio.name, sizeof(itv->sd_gpio.name), "%s-gpio", itv->v4l2_dev.name);
+ itv->sd_gpio.grp_id = IVTV_HW_GPIO;
+ v4l2_ctrl_handler_init(&itv->hdl_gpio, 1);
+ v4l2_ctrl_new_std(&itv->hdl_gpio, &gpio_ctrl_ops,
+ V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
+ if (itv->hdl_gpio.error)
+ return itv->hdl_gpio.error;
+ itv->sd_gpio.ctrl_handler = &itv->hdl_gpio;
+ v4l2_ctrl_handler_setup(&itv->hdl_gpio);
+ return v4l2_device_register_subdev(&itv->v4l2_dev, &itv->sd_gpio);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-13 17:10:27 +0000