Patch from Richard Röjfors wrote: > The patch number 13019 was added via Douglas Schilling Landgraf <dougsland@xxxxxxxxxx> > to http://linuxtv.org/hg/v4l-dvb master development tree. > > Kernel patches in this development tree may be modified to be backward > compatible with older kernels. Compatibility modifications will be > removed before inclusion into the mainstream Kernel > > If anyone has any objections, please let us know by sending a message to: > Linux Media Mailing List <linux-media@xxxxxxxxxxxxxxx> > > ------ Hi, There is a newer version of the driver that has support for beeing interrupt driver and setting standard, and checking the signal status. I would be very happy if that gets committed instead. Here it is: ------ Support for the ADV7180 Video Decoder. Includes support for setting, getting video standard and status. The driver can optionally be interrupt driven, otherwise it polls for standard when required. Signed-off-by: Richard Röjfors <richard.rojfors@xxxxxxxxxxxxxxx> --- diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig index 84b6fc1..ac9f636 100644 --- a/drivers/media/video/Kconfig +++ b/drivers/media/video/Kconfig @@ -265,6 +265,15 @@ config VIDEO_SAA6588 comment "Video decoders" +config VIDEO_ADV7180 + tristate "Analog Devices ADV7180 decoder" + depends on VIDEO_V4L2 && I2C + ---help--- + Support for the Analog Devices ADV7180 video decoder. + + To compile this driver as a module, choose M here: the + module will be called adv7180. + config VIDEO_BT819 tristate "BT819A VideoStream decoder" depends on VIDEO_V4L2 && I2C diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile index 9f2e321..aac0884 100644 --- a/drivers/media/video/Makefile +++ b/drivers/media/video/Makefile @@ -45,6 +45,7 @@ obj-$(CONFIG_VIDEO_SAA7185) += saa7185.o obj-$(CONFIG_VIDEO_SAA7191) += saa7191.o obj-$(CONFIG_VIDEO_ADV7170) += adv7170.o obj-$(CONFIG_VIDEO_ADV7175) += adv7175.o +obj-$(CONFIG_VIDEO_ADV7180) += adv7180.o obj-$(CONFIG_VIDEO_ADV7343) += adv7343.o obj-$(CONFIG_VIDEO_VPX3220) += vpx3220.o obj-$(CONFIG_VIDEO_BT819) += bt819.o diff --git a/drivers/media/video/adv7180.c b/drivers/media/video/adv7180.c new file mode 100644 index 0000000..a2169c1 --- /dev/null +++ b/drivers/media/video/adv7180.c @@ -0,0 +1,466 @@ +/* + * adv7180.c Analog Devices ADV7180 video decoder driver + * Copyright (c) 2009 Intel Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <linux/i2c.h> +#include <linux/i2c-id.h> +#include <media/v4l2-ioctl.h> +#include <linux/videodev2.h> +#include <media/v4l2-device.h> +#include <media/v4l2-chip-ident.h> +#include <linux/mutex.h> + +#define DRIVER_NAME "adv7180" + +#define ADV7180_INPUT_CONTROL_REG 0x00 +#define ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM 0x00 +#define ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM_PED 0x10 +#define ADV7180_INPUT_CONTROL_AD_PAL_N_NTSC_J_SECAM 0x20 +#define ADV7180_INPUT_CONTROL_AD_PAL_N_NTSC_M_SECAM 0x30 +#define ADV7180_INPUT_CONTROL_NTSC_J 0x40 +#define ADV7180_INPUT_CONTROL_NTSC_M 0x50 +#define ADV7180_INPUT_CONTROL_PAL60 0x60 +#define ADV7180_INPUT_CONTROL_NTSC_443 0x70 +#define ADV7180_INPUT_CONTROL_PAL_BG 0x80 +#define ADV7180_INPUT_CONTROL_PAL_N 0x90 +#define ADV7180_INPUT_CONTROL_PAL_M 0xa0 +#define ADV7180_INPUT_CONTROL_PAL_M_PED 0xb0 +#define ADV7180_INPUT_CONTROL_PAL_COMB_N 0xc0 +#define ADV7180_INPUT_CONTROL_PAL_COMB_N_PED 0xd0 +#define ADV7180_INPUT_CONTROL_PAL_SECAM 0xe0 +#define ADV7180_INPUT_CONTROL_PAL_SECAM_PED 0xf0 + +#define ADV7180_EXTENDED_OUTPUT_CONTROL_REG 0x04 +#define ADV7180_EXTENDED_OUTPUT_CONTROL_NTSCDIS 0xC5 + +#define ADV7180_AUTODETECT_ENABLE_REG 0x07 +#define ADV7180_AUTODETECT_DEFAULT 0x7f + +#define ADV7180_ADI_CTRL_REG 0x0e +#define ADV7180_ADI_CTRL_IRQ_SPACE 0x20 + +#define ADV7180_STATUS1_REG 0x10 +#define ADV7180_STATUS1_IN_LOCK 0x01 +#define ADV7180_STATUS1_AUTOD_MASK 0x70 +#define ADV7180_STATUS1_AUTOD_NTSM_M_J 0x00 +#define ADV7180_STATUS1_AUTOD_NTSC_4_43 0x10 +#define ADV7180_STATUS1_AUTOD_PAL_M 0x20 +#define ADV7180_STATUS1_AUTOD_PAL_60 0x30 +#define ADV7180_STATUS1_AUTOD_PAL_B_G 0x40 +#define ADV7180_STATUS1_AUTOD_SECAM 0x50 +#define ADV7180_STATUS1_AUTOD_PAL_COMB 0x60 +#define ADV7180_STATUS1_AUTOD_SECAM_525 0x70 + +#define ADV7180_IDENT_REG 0x11 +#define ADV7180_ID_7180 0x18 + +#define ADV7180_ICONF1_ADI 0x40 +#define ADV7180_ICONF1_ACTIVE_LOW 0x01 +#define ADV7180_ICONF1_PSYNC_ONLY 0x10 +#define ADV7180_ICONF1_ACTIVE_TO_CLR 0xC0 + +#define ADV7180_IRQ1_LOCK 0x01 +#define ADV7180_IRQ1_UNLOCK 0x02 +#define ADV7180_ISR1_ADI 0x42 +#define ADV7180_ICR1_ADI 0x43 +#define ADV7180_IMR1_ADI 0x44 +#define ADV7180_IMR2_ADI 0x48 +#define ADV7180_IRQ3_AD_CHANGE 0x08 +#define ADV7180_ISR3_ADI 0x4A +#define ADV7180_ICR3_ADI 0x4B +#define ADV7180_IMR3_ADI 0x4C +#define ADV7180_IMR4_ADI 0x50 + +struct adv7180_state { + struct v4l2_subdev sd; + struct work_struct work; + struct mutex mutex; /* mutual excl. when accessing chip */ + int irq; + v4l2_std_id curr_norm; + bool autodetect; +}; + +static v4l2_std_id adv7180_std_to_v4l2(u8 status1) +{ + switch (status1 & ADV7180_STATUS1_AUTOD_MASK) { + case ADV7180_STATUS1_AUTOD_NTSM_M_J: + return V4L2_STD_NTSC; + case ADV7180_STATUS1_AUTOD_NTSC_4_43: + return V4L2_STD_NTSC_443; + case ADV7180_STATUS1_AUTOD_PAL_M: + return V4L2_STD_PAL_M; + case ADV7180_STATUS1_AUTOD_PAL_60: + return V4L2_STD_PAL_60; + case ADV7180_STATUS1_AUTOD_PAL_B_G: + return V4L2_STD_PAL; + case ADV7180_STATUS1_AUTOD_SECAM: + return V4L2_STD_SECAM; + case ADV7180_STATUS1_AUTOD_PAL_COMB: + return V4L2_STD_PAL_Nc | V4L2_STD_PAL_N; + case ADV7180_STATUS1_AUTOD_SECAM_525: + return V4L2_STD_SECAM; + default: + return V4L2_STD_UNKNOWN; + } +} + +static int v4l2_std_to_adv7180(v4l2_std_id std) +{ + /* pal is a combination of several variants */ + if (std & V4L2_STD_PAL) + return ADV7180_INPUT_CONTROL_PAL_BG; + if (std & V4L2_STD_NTSC) + return ADV7180_INPUT_CONTROL_NTSC_M; + + switch (std) { + case V4L2_STD_PAL_60: + return ADV7180_INPUT_CONTROL_PAL60; + case V4L2_STD_NTSC_443: + return ADV7180_INPUT_CONTROL_NTSC_443; + case V4L2_STD_PAL_N: + return ADV7180_INPUT_CONTROL_PAL_N; + case V4L2_STD_PAL_M: + return ADV7180_INPUT_CONTROL_PAL_M; + case V4L2_STD_PAL_Nc: + return ADV7180_INPUT_CONTROL_PAL_COMB_N; + case V4L2_STD_SECAM: + return ADV7180_INPUT_CONTROL_PAL_SECAM; + default: + return -EINVAL; + } +} + +static u32 adv7180_status_to_v4l2(u8 status1) +{ + if (!(status1 & ADV7180_STATUS1_IN_LOCK)) + return V4L2_IN_ST_NO_SIGNAL; + + return 0; +} + +static int __adv7180_status(struct i2c_client *client, u32 *status, + v4l2_std_id *std) +{ + int status1 = i2c_smbus_read_byte_data(client, ADV7180_STATUS1_REG); + + if (status1 < 0) + return status1; + + if (status) + *status = adv7180_status_to_v4l2(status1); + if (std) + *std = adv7180_std_to_v4l2(status1); + + return 0; +} + +static inline struct adv7180_state *to_state(struct v4l2_subdev *sd) +{ + return container_of(sd, struct adv7180_state, sd); +} + +static int adv7180_querystd(struct v4l2_subdev *sd, v4l2_std_id *std) +{ + struct adv7180_state *state = to_state(sd); + int err = mutex_lock_interruptible(&state->mutex); + if (err) + return err; + + /* when we are interrupt driven we know the state */ + if (!state->autodetect || state->irq > 0) + *std = state->curr_norm; + else + err = __adv7180_status(v4l2_get_subdevdata(sd), NULL, std); + + mutex_unlock(&state->mutex); + return err; +} + +static int adv7180_s_std(struct v4l2_subdev *sd, v4l2_std_id std) +{ + struct adv7180_state *state = to_state(sd); + struct i2c_client *client = v4l2_get_subdevdata(sd); + int ret = mutex_lock_interruptible(&state->mutex); + if (ret) + return ret; + + /* all standards -> autodetect */ + if (std == V4L2_STD_ALL) { + ret = i2c_smbus_write_byte_data(client, + ADV7180_INPUT_CONTROL_REG, + ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM); + if (ret < 0) + goto out; + + __adv7180_status(client, NULL, &state->curr_norm); + state->autodetect = true; + } else { + ret = v4l2_std_to_adv7180(std); + if (ret < 0) + goto out; + + ret = i2c_smbus_write_byte_data(client, + ADV7180_INPUT_CONTROL_REG, ret); + if (ret < 0) + goto out; + + state->curr_norm = std; + state->autodetect = false; + } + ret = 0; +out: + mutex_unlock(&state->mutex); + return ret; +} + +static int adv7180_g_input_status(struct v4l2_subdev *sd, u32 *status) +{ + struct adv7180_state *state = to_state(sd); + int ret = mutex_lock_interruptible(&state->mutex); + if (ret) + return ret; + + ret = __adv7180_status(v4l2_get_subdevdata(sd), status, NULL); + mutex_unlock(&state->mutex); + return ret; +} + +static int adv7180_g_chip_ident(struct v4l2_subdev *sd, + struct v4l2_dbg_chip_ident *chip) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + + return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7180, 0); +} + +static const struct v4l2_subdev_video_ops adv7180_video_ops = { + .querystd = adv7180_querystd, + .g_input_status = adv7180_g_input_status, +}; + +static const struct v4l2_subdev_core_ops adv7180_core_ops = { + .g_chip_ident = adv7180_g_chip_ident, + .s_std = adv7180_s_std, +}; + +static const struct v4l2_subdev_ops adv7180_ops = { + .core = &adv7180_core_ops, + .video = &adv7180_video_ops, +}; + +static void adv7180_work(struct work_struct *work) +{ + struct adv7180_state *state = container_of(work, struct adv7180_state, + work); + struct i2c_client *client = v4l2_get_subdevdata(&state->sd); + u8 isr3; + + mutex_lock(&state->mutex); + i2c_smbus_write_byte_data(client, ADV7180_ADI_CTRL_REG, + ADV7180_ADI_CTRL_IRQ_SPACE); + isr3 = i2c_smbus_read_byte_data(client, ADV7180_ISR3_ADI); + /* clear */ + i2c_smbus_write_byte_data(client, ADV7180_ICR3_ADI, isr3); + i2c_smbus_write_byte_data(client, ADV7180_ADI_CTRL_REG, 0); + + if (isr3 & ADV7180_IRQ3_AD_CHANGE && state->autodetect) + __adv7180_status(client, NULL, &state->curr_norm); + mutex_unlock(&state->mutex); + + enable_irq(state->irq); +} + +static irqreturn_t adv7180_irq(int irq, void *devid) +{ + struct adv7180_state *state = devid; + + schedule_work(&state->work); + + disable_irq_nosync(state->irq); + + return IRQ_HANDLED; +} + +/* + * Generic i2c probe + * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' + */ + +static int adv7180_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct adv7180_state *state; + struct v4l2_subdev *sd; + int ret; + + /* Check if the adapter supports the needed features */ + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) + return -EIO; + + v4l_info(client, "chip found @ 0x%02x (%s)\n", + client->addr << 1, client->adapter->name); + + state = kzalloc(sizeof(struct adv7180_state), GFP_KERNEL); + if (state == NULL) { + ret = -ENOMEM; + goto err; + } + + state->irq = client->irq; + INIT_WORK(&state->work, adv7180_work); + mutex_init(&state->mutex); + state->autodetect = true; + sd = &state->sd; + v4l2_i2c_subdev_init(sd, client, &adv7180_ops); + + /* Initialize adv7180 */ + /* Enable autodetection */ + ret = i2c_smbus_write_byte_data(client, ADV7180_INPUT_CONTROL_REG, + ADV7180_INPUT_CONTROL_AD_PAL_BG_NTSC_J_SECAM); + if (ret < 0) + goto err_unreg_subdev; + + ret = i2c_smbus_write_byte_data(client, ADV7180_AUTODETECT_ENABLE_REG, + ADV7180_AUTODETECT_DEFAULT); + if (ret < 0) + goto err_unreg_subdev; + + /* ITU-R BT.656-4 compatible */ + ret = i2c_smbus_write_byte_data(client, + ADV7180_EXTENDED_OUTPUT_CONTROL_REG, + ADV7180_EXTENDED_OUTPUT_CONTROL_NTSCDIS); + if (ret < 0) + goto err_unreg_subdev; + + /* read current norm */ + __adv7180_status(client, NULL, &state->curr_norm); + + /* register for interrupts */ + if (state->irq > 0) { + ret = request_irq(state->irq, adv7180_irq, 0, DRIVER_NAME, + state); + if (ret) + goto err_unreg_subdev; + + ret = i2c_smbus_write_byte_data(client, ADV7180_ADI_CTRL_REG, + ADV7180_ADI_CTRL_IRQ_SPACE); + if (ret < 0) + goto err_unreg_subdev; + + /* config the Interrupt pin to be active low */ + ret = i2c_smbus_write_byte_data(client, ADV7180_ICONF1_ADI, + ADV7180_ICONF1_ACTIVE_LOW | ADV7180_ICONF1_PSYNC_ONLY); + if (ret < 0) + goto err_unreg_subdev; + + ret = i2c_smbus_write_byte_data(client, ADV7180_IMR1_ADI, 0); + if (ret < 0) + goto err_unreg_subdev; + + ret = i2c_smbus_write_byte_data(client, ADV7180_IMR2_ADI, 0); + if (ret < 0) + goto err_unreg_subdev; + + /* enable AD change interrupts interrupts */ + ret = i2c_smbus_write_byte_data(client, ADV7180_IMR3_ADI, + ADV7180_IRQ3_AD_CHANGE); + if (ret < 0) + goto err_unreg_subdev; + + ret = i2c_smbus_write_byte_data(client, ADV7180_IMR4_ADI, 0); + if (ret < 0) + goto err_unreg_subdev; + + ret = i2c_smbus_write_byte_data(client, ADV7180_ADI_CTRL_REG, + 0); + if (ret < 0) + goto err_unreg_subdev; + } + + return 0; + +err_unreg_subdev: + mutex_destroy(&state->mutex); + v4l2_device_unregister_subdev(sd); + kfree(state); +err: + printk(KERN_ERR DRIVER_NAME ": Failed to probe: %d\n", ret); + return ret; +} + +static int adv7180_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct adv7180_state *state = to_state(sd); + + if (state->irq > 0) { + free_irq(client->irq, state); + if (cancel_work_sync(&state->work)) { + /* + * Work was pending, therefore we need to enable + * IRQ here to balance the disable_irq() done in the + * interrupt handler. + */ + enable_irq(state->irq); + } + } + + mutex_destroy(&state->mutex); + v4l2_device_unregister_subdev(sd); + kfree(to_state(sd)); + return 0; +} + +static const struct i2c_device_id adv7180_id[] = { + {DRIVER_NAME, 0}, + {}, +}; + +MODULE_DEVICE_TABLE(i2c, adv7180_id); + +static struct i2c_driver adv7180_driver = { + .driver = { + .owner = THIS_MODULE, + .name = DRIVER_NAME, + }, + .probe = adv7180_probe, + .remove = adv7180_remove, + .id_table = adv7180_id, +}; + +static __init int adv7180_init(void) +{ + return i2c_add_driver(&adv7180_driver); +} + +static __exit void adv7180_exit(void) +{ + i2c_del_driver(&adv7180_driver); +} + +module_init(adv7180_init); +module_exit(adv7180_exit); + +MODULE_DESCRIPTION("Analog Devices ADV7180 video decoder driver"); +MODULE_AUTHOR("Mocean Laboratories"); +MODULE_LICENSE("GPL v2"); + diff --git a/include/media/v4l2-chip-ident.h b/include/media/v4l2-chip-ident.h index 94e908c..4e3eed9 100644 --- a/include/media/v4l2-chip-ident.h +++ b/include/media/v4l2-chip-ident.h @@ -135,6 +135,9 @@ enum { /* module adv7175: just ident 7175 */ V4L2_IDENT_ADV7175 = 7175, + /* module adv7180: just ident 7180 */ + V4L2_IDENT_ADV7180 = 7180, + /* module saa7185: just ident 7185 */ V4L2_IDENT_SAA7185 = 7185, -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
