From ee6e3a865a469c78daa93a1e6cdbaca3a102f9c8 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 17 Apr 2008 21:37:31 -0300 Subject: [PATCH] V4L/DVB (7595): Improve generic support for setting gpio values em28xx based devices with xc3028 may require some specific gpio values. This patch adds a generic handling for such values. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/em28xx/em28xx-cards.c | 138 +++++++++++++++--------------- drivers/media/video/em28xx/em28xx-core.c | 32 +++++-- drivers/media/video/em28xx/em28xx.h | 23 ++++- 3 files changed, 116 insertions(+), 77 deletions(-) diff --git a/drivers/media/video/em28xx/em28xx-cards.c b/drivers/media/video/em28xx/em28xx-cards.c index bbd75bd..c907d6a 100644 --- a/drivers/media/video/em28xx/em28xx-cards.c +++ b/drivers/media/video/em28xx/em28xx-cards.c @@ -194,9 +194,6 @@ struct em28xx_board em28xx_boards[] = { .vmux = TVP5150_SVIDEO, .amux = 1, } }, - - /* gpio's 4, 1, 0 */ - .analog_gpio = 0x003d2d, }, [EM2880_BOARD_TERRATEC_HYBRID_XS] = { .name = "Terratec Hybrid XS", @@ -445,73 +442,88 @@ static struct em28xx_hash_table em28xx_i2c_hash[] = { {0xf51200e3, EM2800_BOARD_VGEAR_POCKETTV, TUNER_LG_PAL_NEW_TAPC}, }; +int em28xx_tuner_callback(void *ptr, int command, int arg) +{ + int rc = 0, i; + struct em28xx *dev = ptr; + struct gpio_ctl (*gpio_ctl)[MAX_GPIO]; + + if (dev->tuner_type != TUNER_XC2028) + return 0; + + if (command != XC2028_TUNER_RESET) + return 0; + + if (dev->mode == EM28XX_ANALOG_MODE) + gpio_ctl = dev->analog_gpio; + else + gpio_ctl = dev->digital_gpio; + + /* Send GPIO reset sequences specified at board entry */ + for (i = 0; i < MAX_GPIO; i++) { + if (!gpio_ctl[i]->val) + break; + + dev->em28xx_write_regs(dev, + gpio_ctl[i]->reg, + &gpio_ctl[i]->val, 1); + if (gpio_ctl[i]->t1) + msleep(gpio_ctl[i]->t1); + + if (!gpio_ctl[i]->rst) + continue; + dev->em28xx_write_regs(dev, + gpio_ctl[i]->reg, + &gpio_ctl[i]->rst, 1); + if (gpio_ctl[i]->t2) + msleep(gpio_ctl[i]->t2); + + dev->em28xx_write_regs(dev, + gpio_ctl[i]->reg, + &gpio_ctl[i]->val, 1); + if (gpio_ctl[i]->t3) + msleep(gpio_ctl[i]->t3); + } + return rc; +} +EXPORT_SYMBOL_GPL(em28xx_tuner_callback); + +static void em28xx_set_model(struct em28xx *dev) +{ + dev->is_em2800 = em28xx_boards[dev->model].is_em2800; + dev->has_msp34xx = em28xx_boards[dev->model].has_msp34xx; + dev->tda9887_conf = em28xx_boards[dev->model].tda9887_conf; + dev->decoder = em28xx_boards[dev->model].decoder; + dev->video_inputs = em28xx_boards[dev->model].vchannels; + dev->has_12mhz_i2s = em28xx_boards[dev->model].has_12mhz_i2s; + dev->max_range_640_480 = em28xx_boards[dev->model].max_range_640_480; + dev->has_dvb = em28xx_boards[dev->model].has_dvb; + dev->analog_gpio = &em28xx_boards[dev->model].analog_gpio; + dev->digital_gpio = &em28xx_boards[dev->model].digital_gpio; +} + /* Since em28xx_pre_card_setup() requires a proper dev->model, * this won't work for boards with generic PCI IDs */ void em28xx_pre_card_setup(struct em28xx *dev) { + em28xx_set_model(dev); + /* request some modules */ switch (dev->model) { case EM2880_BOARD_TERRATEC_PRODIGY_XS: case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900: - case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_950: case EM2880_BOARD_TERRATEC_HYBRID_XS: + case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_950: em28xx_write_regs(dev, XCLK_REG, "\x27", 1); em28xx_write_regs(dev, I2C_CLK_REG, "\x40", 1); - em28xx_write_regs(dev, 0x08, "\xff", 1); - em28xx_write_regs(dev, 0x04, "\x00", 1); - msleep(100); - em28xx_write_regs(dev, 0x04, "\x08", 1); - msleep(100); - em28xx_write_regs(dev, 0x08, "\xff", 1); - msleep(50); - em28xx_write_regs(dev, 0x08, "\x2d", 1); - msleep(50); - em28xx_write_regs(dev, 0x08, "\x3d", 1); - break; } -} - -static int em28xx_tuner_callback(void *ptr, int command, int arg) -{ - int rc = 0; - struct em28xx *dev = ptr; - - if (dev->tuner_type != TUNER_XC2028) - return 0; - switch (command) { - case XC2028_TUNER_RESET: - { - /* GPIO and initialization codes for analog TV and radio - This code should be complemented for DTV, since reset - codes are different. - */ - - dev->em28xx_write_regs_req(dev, 0x00, 0x48, "\x00", 1); - dev->em28xx_write_regs_req(dev, 0x00, 0x12, "\x67", 1); - - if (dev->analog_gpio) { - char gpio0 = dev->analog_gpio & 0xff; - char gpio1 = (dev->analog_gpio >> 8) & 0xff; - char gpio4 = dev->analog_gpio >> 24; - - if (gpio4) { - dev->em28xx_write_regs(dev, 0x04, &gpio4, 1); - msleep(140); - } - - msleep(6); - dev->em28xx_write_regs(dev, 0x08, &gpio0, 1); - msleep(10); - dev->em28xx_write_regs(dev, 0x08, &gpio1, 1); - msleep(5); - } - - break; - } - } - return rc; + /* Put xc2028 tuners and demods into a sane state */ + if (dev->tuner_type == TUNER_XC2028) { + dev->mode = EM28XX_DIGITAL_MODE; + em28xx_tuner_callback(dev, XC2028_TUNER_RESET, 0); + }; } static void em28xx_config_tuner(struct em28xx *dev) @@ -634,20 +646,6 @@ static int em28xx_hint_board(struct em28xx *dev) return -1; } - -static void em28xx_set_model(struct em28xx *dev) -{ - dev->is_em2800 = em28xx_boards[dev->model].is_em2800; - dev->has_msp34xx = em28xx_boards[dev->model].has_msp34xx; - dev->tda9887_conf = em28xx_boards[dev->model].tda9887_conf; - dev->decoder = em28xx_boards[dev->model].decoder; - dev->video_inputs = em28xx_boards[dev->model].vchannels; - dev->analog_gpio = em28xx_boards[dev->model].analog_gpio; - dev->has_12mhz_i2s = em28xx_boards[dev->model].has_12mhz_i2s; - dev->max_range_640_480 = em28xx_boards[dev->model].max_range_640_480; - dev->has_dvb = em28xx_boards[dev->model].has_dvb; -} - /* ----------------------------------------------------------------------- */ void em28xx_set_ir(struct em28xx *dev, struct IR_i2c *ir) { diff --git a/drivers/media/video/em28xx/em28xx-core.c b/drivers/media/video/em28xx/em28xx-core.c index 97635ab..841c7c2 100644 --- a/drivers/media/video/em28xx/em28xx-core.c +++ b/drivers/media/video/em28xx/em28xx-core.c @@ -314,14 +314,36 @@ int em28xx_colorlevels_set_default(struct em28xx *dev) int em28xx_capture_start(struct em28xx *dev, int start) { - int ret; + int rc; /* FIXME: which is the best order? */ /* video registers are sampled by VREF */ - if ((ret = em28xx_write_reg_bits(dev, USBSUSP_REG, start ? 0x10 : 0x00, - 0x10)) < 0) - return ret; + rc = em28xx_write_reg_bits(dev, USBSUSP_REG, + start ? 0x10 : 0x00, 0x10); + if (rc < 0) + return rc; + + if (!start) { + /* disable video capture */ + rc = em28xx_write_regs(dev, VINENABLE_REG, "\x27", 1); + if (rc < 0) + return rc; + } + /* enable video capture */ - return em28xx_write_regs(dev, VINENABLE_REG, start ? "\x67" : "\x27", 1); + rc = em28xx_write_regs_req(dev, 0x00, 0x48, "\x00", 1); + if (rc < 0) + return rc; + if (dev->mode == EM28XX_ANALOG_MODE) + rc = em28xx_write_regs(dev, VINENABLE_REG,"\x67", 1); + else + rc = em28xx_write_regs(dev, VINENABLE_REG,"\x37", 1); + + if (rc < 0) + return rc; + + msleep (6); + + return rc; } int em28xx_outfmt_set_yuv422(struct em28xx *dev) diff --git a/drivers/media/video/em28xx/em28xx.h b/drivers/media/video/em28xx/em28xx.h index 96a56fa..00d2f62 100644 --- a/drivers/media/video/em28xx/em28xx.h +++ b/drivers/media/video/em28xx/em28xx.h @@ -218,6 +218,21 @@ enum em28xx_decoder { EM28XX_SAA7114 }; +#define MAX_GPIO 2 +struct gpio_ctl { + /* Register to be set */ + unsigned char reg; + /* Initial/final value */ + unsigned char val; + /* reset value - if set, it will do: + val1 - val2 - val1 + */ + unsigned char rst; + /* Sleep times + */ + unsigned int t1, t2, t3; +}; + struct em28xx_board { char *name; int vchannels; @@ -233,7 +248,8 @@ struct em28xx_board { unsigned int max_range_640_480:1; unsigned int has_dvb:1; - unsigned int analog_gpio; + struct gpio_ctl analog_gpio[MAX_GPIO]; + struct gpio_ctl digital_gpio[MAX_GPIO]; enum em28xx_decoder decoder; @@ -293,7 +309,6 @@ struct em28xx { char name[30]; /* name (including minor) of the device */ int model; /* index in the device_data struct */ int devno; /* marks the number of this device */ - unsigned int analog_gpio; unsigned int is_em2800:1; unsigned int has_msp34xx:1; unsigned int has_tda9887:1; @@ -303,6 +318,9 @@ struct em28xx { unsigned int max_range_640_480:1; unsigned int has_dvb:1; + struct gpio_ctl (*analog_gpio)[MAX_GPIO]; + struct gpio_ctl (*digital_gpio)[MAX_GPIO]; + int video_inputs; /* number of video inputs */ struct list_head devlist; @@ -443,6 +461,7 @@ extern struct em28xx_board em28xx_boards[]; extern struct usb_device_id em28xx_id_table[]; extern const unsigned int em28xx_bcount; void em28xx_set_ir(struct em28xx *dev, struct IR_i2c *ir); +int em28xx_tuner_callback(void *ptr, int command, int arg); /* Provided by em28xx-input.c */ /* TODO: Check if the standard get_key handlers on ir-common can be used */ -- 2.7.4