From: Mauro Carvalho Chehab <mchehab@infradead.org>
Date: Fri, 18 Apr 2008 00:48:00 +0000 (-0300)
Subject: V4L/DVB (7615): em28xx: Provide the proper support for switching between analog/digital
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c67ec53f8f4e90ebd482789e2f6d121f41a0bd90;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git
V4L/DVB (7615): em28xx: Provide the proper support for switching between analog/digital
Before this patch, HVR900/HVR950 were incorreclty going back to analog. The
result is that only digital were working.
This patch provides the proper setup for analog/digital and tuner callback.
It also properly resets analog into a sane state at open().
Thanks to Steven Toth <stoth@linuxtv.org> and Michael Krufky <mkrufky@linuxtv.org>
for helping to set the proper parameters to GPO/GPIO em2883 ports.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
---
diff --git a/drivers/media/video/em28xx/em28xx-cards.c b/drivers/media/video/em28xx/em28xx-cards.c
index ed50b4e55264..13ffde281067 100644
--- a/drivers/media/video/em28xx/em28xx-cards.c
+++ b/drivers/media/video/em28xx/em28xx-cards.c
@@ -436,19 +436,25 @@ MODULE_DEVICE_TABLE(usb, em28xx_id_table);
/* Board Hauppauge WinTV HVR 900 analog */
struct em28xx_reg_seq hauppauge_wintv_hvr_900_analog[] = {
- { -1, -1, 6},
- {EM28XX_R08_GPIO, 0x2d, 10},
- {EM28XX_R08_GPIO, 0x3d, 5},
- { -1, -1, -1},
+ {EM28XX_R08_GPIO, 0x2d, ~EM_GPIO_4, 10},
+ {0x05, 0xff, 0x10, 10},
+ { -1, -1, -1, -1},
};
+
/* Board Hauppauge WinTV HVR 900 digital */
struct em28xx_reg_seq hauppauge_wintv_hvr_900_digital[] = {
- { -1, -1, 6},
- {EM28XX_R08_GPIO, 0x2e, 6},
- {EM28XX_R08_GPIO, 0x3e, 6},
- {EM2880_R04_GPO, 0x04, 10},
- {EM2880_R04_GPO, 0x0c, 10},
- { -1, -1, -1},
+ {EM28XX_R08_GPIO, 0x2e, ~EM_GPIO_4, 10},
+ {EM2880_R04_GPO, 0x04, 0x0f, 10},
+ {EM2880_R04_GPO, 0x0c, 0x0f, 10},
+ { -1, -1, -1, -1},
+};
+
+/* Board Hauppauge WinTV HVR 900 tuner_callback */
+struct em28xx_reg_seq hauppauge_wintv_hvr_900_tuner_callback[] = {
+ {EM28XX_R08_GPIO, EM_GPIO_4, EM_GPIO_4, 10},
+ {EM28XX_R08_GPIO, 0, EM_GPIO_4, 10},
+ {EM28XX_R08_GPIO, EM_GPIO_4, EM_GPIO_4, 10},
+ { -1, -1, -1, -1},
};
/*
@@ -469,7 +475,6 @@ int em28xx_tuner_callback(void *ptr, int command, int arg)
{
int rc = 0;
struct em28xx *dev = ptr;
- struct em28xx_reg_seq *gpio;
if (dev->tuner_type != TUNER_XC2028)
return 0;
@@ -478,32 +483,10 @@ int em28xx_tuner_callback(void *ptr, int command, int arg)
return 0;
if (dev->mode == EM28XX_ANALOG_MODE)
- gpio = dev->analog_gpio;
+ rc = em28xx_gpio_set(dev, dev->tun_analog_gpio);
else
- gpio = dev->digital_gpio;
+ rc = em28xx_gpio_set(dev, dev->tun_digital_gpio);
- /* djh - Not sure if these are still required */
- dev->em28xx_write_regs_req(dev, 0x00, 0x48, "\x00", 1);
- if (dev->mode == EM28XX_ANALOG_MODE)
- dev->em28xx_write_regs_req(dev, 0x00, 0x12, "\x67", 1);
- else
- dev->em28xx_write_regs_req(dev, 0x00, 0x12, "\x37", 1);
- msleep(6);
-
- if (!gpio)
- return rc;
-
- /* Send GPIO reset sequences specified at board entry */
- while (gpio->sleep >= 0) {
- if (gpio->reg >= 0)
- rc = dev->em28xx_write_regs(dev,
- gpio->reg,
- &gpio->val, 1);
- if (gpio->sleep > 0)
- msleep(gpio->sleep);
-
- gpio++;
- }
return rc;
}
EXPORT_SYMBOL_GPL(em28xx_tuner_callback);
@@ -527,6 +510,10 @@ void em28xx_pre_card_setup(struct em28xx *dev)
{
int rc;
+ rc = em28xx_read_reg(dev, EM2880_R04_GPO);
+ if (rc >= 0)
+ dev->reg_gpo = rc;
+
dev->wait_after_write = 5;
rc = em28xx_read_reg(dev, EM28XX_R0A_CHIPID);
if (rc > 0) {
@@ -547,24 +534,24 @@ void em28xx_pre_card_setup(struct em28xx *dev)
case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
case EM2880_BOARD_TERRATEC_HYBRID_XS:
case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_950:
- em28xx_write_regs(dev, EM28XX_R0F_XCLK, "\x27", 1);
+ em28xx_write_regs(dev, EM28XX_R0F_XCLK, "\x27", 1);
em28xx_write_regs(dev, EM28XX_R06_I2C_CLK, "\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);
- dev->analog_gpio = hauppauge_wintv_hvr_900_analog;
- dev->digital_gpio = hauppauge_wintv_hvr_900_digital;
+ /* Sets GPO/GPIO sequences for this device */
+ dev->analog_gpio = hauppauge_wintv_hvr_900_analog;
+ dev->digital_gpio = hauppauge_wintv_hvr_900_digital;
+ dev->tun_analog_gpio = hauppauge_wintv_hvr_900_tuner_callback;
+ dev->tun_digital_gpio = hauppauge_wintv_hvr_900_tuner_callback;
break;
}
+
+ em28xx_gpio_set(dev, dev->tun_analog_gpio);
+ em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
+
+ /* Unlock device */
+ em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
}
void em28xx_setup_xc3028(struct em28xx *dev, struct xc2028_ctrl *ctl)
diff --git a/drivers/media/video/em28xx/em28xx-core.c b/drivers/media/video/em28xx/em28xx-core.c
index bd7794f4fd74..db40358c773b 100644
--- a/drivers/media/video/em28xx/em28xx-core.c
+++ b/drivers/media/video/em28xx/em28xx-core.c
@@ -134,7 +134,10 @@ int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
unsigned char *bufs;
if (dev->state & DEV_DISCONNECTED)
- return(-ENODEV);
+ return -ENODEV;
+
+ if (len < 1)
+ return -EINVAL;
bufs = kmalloc(len, GFP_KERNEL);
@@ -162,7 +165,23 @@ int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len)
{
- return em28xx_write_regs_req(dev, USB_REQ_GET_STATUS, reg, buf, len);
+ int rc;
+
+ rc = em28xx_write_regs_req(dev, USB_REQ_GET_STATUS, reg, buf, len);
+
+ /* Stores GPO/GPIO values at the cache, if changed
+ Only write values should be stored, since input on a GPIO
+ register will return the input bits.
+ Not sure what happens on reading GPO register.
+ */
+ if (rc >= 0) {
+ if (reg == EM2880_R04_GPO)
+ dev->reg_gpo = buf[0];
+ else if (reg == EM28XX_R08_GPIO)
+ dev->reg_gpio = buf[0];
+ }
+
+ return rc;
}
/*
@@ -176,12 +195,19 @@ static int em28xx_write_reg_bits(struct em28xx *dev, u16 reg, u8 val,
int oldval;
u8 newval;
- oldval = em28xx_read_reg(dev, reg);
+ /* Uses cache for gpo/gpio registers */
+ if (reg == EM2880_R04_GPO)
+ oldval = dev->reg_gpo;
+ else if (reg == EM28XX_R08_GPIO)
+ oldval = dev->reg_gpio;
+ else
+ oldval = em28xx_read_reg(dev, reg);
if (oldval < 0)
return oldval;
newval = (((u8) oldval) & ~bitmask) | (val & bitmask);
+
return em28xx_write_regs(dev, reg, &newval, 1);
}
@@ -472,6 +498,57 @@ int em28xx_set_alternate(struct em28xx *dev)
return 0;
}
+int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio)
+{
+ int rc = 0;
+
+ if (!gpio)
+ return rc;
+
+ dev->em28xx_write_regs_req(dev, 0x00, 0x48, "\x00", 1);
+ if (dev->mode == EM28XX_ANALOG_MODE)
+ dev->em28xx_write_regs_req(dev, 0x00, 0x12, "\x67", 1);
+ else
+ dev->em28xx_write_regs_req(dev, 0x00, 0x12, "\x37", 1);
+ msleep(6);
+
+ /* Send GPIO reset sequences specified at board entry */
+ while (gpio->sleep >= 0) {
+ if (gpio->reg >= 0) {
+ rc = em28xx_write_reg_bits(dev,
+ gpio->reg,
+ gpio->val,
+ gpio->mask);
+ if (rc < 0)
+ return rc;
+ }
+ if (gpio->sleep > 0)
+ msleep(gpio->sleep);
+
+ gpio++;
+ }
+ return rc;
+}
+
+int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode)
+{
+ if (dev->mode == set_mode)
+ return 0;
+
+ if (set_mode == EM28XX_MODE_UNDEFINED) {
+ dev->mode = set_mode;
+ return 0;
+ }
+
+ dev->mode = set_mode;
+
+ if (dev->mode == EM28XX_DIGITAL_MODE)
+ return em28xx_gpio_set(dev, dev->digital_gpio);
+ else
+ return em28xx_gpio_set(dev, dev->analog_gpio);
+}
+EXPORT_SYMBOL_GPL(em28xx_set_mode);
+
/* ------------------------------------------------------------------
URB control
------------------------------------------------------------------*/
@@ -548,8 +625,7 @@ EXPORT_SYMBOL_GPL(em28xx_uninit_isoc);
*/
int em28xx_init_isoc(struct em28xx *dev, int max_packets,
int num_bufs, int max_pkt_size,
- int (*isoc_copy) (struct em28xx *dev, struct urb *urb),
- int cap_type)
+ int (*isoc_copy) (struct em28xx *dev, struct urb *urb))
{
struct em28xx_dmaqueue *dma_q = &dev->vidq;
int i;
@@ -612,7 +688,7 @@ int em28xx_init_isoc(struct em28xx *dev, int max_packets,
should also be using 'desc.bInterval'
*/
pipe = usb_rcvisocpipe(dev->udev,
- cap_type == EM28XX_ANALOG_CAPTURE ? 0x82 : 0x84);
+ dev->mode == EM28XX_ANALOG_MODE ? 0x82 : 0x84);
usb_fill_int_urb(urb, dev->udev, pipe,
dev->isoc_ctl.transfer_buffer[i], sb_size,
@@ -632,7 +708,7 @@ int em28xx_init_isoc(struct em28xx *dev, int max_packets,
init_waitqueue_head(&dma_q->wq);
- em28xx_capture_start(dev, cap_type);
+ em28xx_capture_start(dev, 1);
/* submit urbs and enables IRQ */
for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
diff --git a/drivers/media/video/em28xx/em28xx-dvb.c b/drivers/media/video/em28xx/em28xx-dvb.c
index 39581d976e01..2e9ec626b609 100644
--- a/drivers/media/video/em28xx/em28xx-dvb.c
+++ b/drivers/media/video/em28xx/em28xx-dvb.c
@@ -137,14 +137,17 @@ static inline int dvb_isoc_copy(struct em28xx *dev, struct urb *urb)
static int start_streaming(struct em28xx_dvb *dvb)
{
+ int rc;
struct em28xx *dev = dvb->adapter.priv;
usb_set_interface(dev->udev, 0, 1);
- dev->em28xx_write_regs_req(dev, 0x00, 0x48, "\x00", 1);
+ rc = em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
+ if (rc < 0)
+ return rc;
return em28xx_init_isoc(dev, EM28XX_DVB_MAX_PACKETS,
EM28XX_DVB_NUM_BUFS, EM28XX_DVB_MAX_PACKETSIZE,
- dvb_isoc_copy, EM28XX_DIGITAL_CAPTURE);
+ dvb_isoc_copy);
}
static int stop_streaming(struct em28xx_dvb *dvb)
@@ -152,6 +155,9 @@ static int stop_streaming(struct em28xx_dvb *dvb)
struct em28xx *dev = dvb->adapter.priv;
em28xx_uninit_isoc(dev);
+
+ em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
+
return 0;
}
@@ -368,13 +374,10 @@ static int dvb_init(struct em28xx *dev)
}
dev->dvb = dvb;
+ em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
/* init frontend */
switch (dev->model) {
case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_950:
- /* Enable lgdt330x */
- dev->mode = EM28XX_DIGITAL_MODE;
- em28xx_tuner_callback(dev, XC2028_TUNER_RESET, 0);
-
dvb->frontend = dvb_attach(lgdt330x_attach,
&em2880_lgdt3303_dev,
&dev->i2c_adap);
@@ -384,9 +387,6 @@ static int dvb_init(struct em28xx *dev)
}
break;
case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
- /* Enable zl10353 */
- dev->mode = EM28XX_DIGITAL_MODE;
- em28xx_tuner_callback(dev, XC2028_TUNER_RESET, 0);
dvb->frontend = dvb_attach(zl10353_attach,
&em28xx_zl10353_with_xc3028,
&dev->i2c_adap);
@@ -415,10 +415,12 @@ static int dvb_init(struct em28xx *dev)
if (result < 0)
goto out_free;
+ em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
printk(KERN_INFO "Successfully loaded em28xx-dvb\n");
return 0;
out_free:
+ em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
kfree(dvb);
dev->dvb = NULL;
return result;
diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c
index fb533fda2198..4ffd064c402a 100644
--- a/drivers/media/video/em28xx/em28xx-video.c
+++ b/drivers/media/video/em28xx/em28xx-video.c
@@ -461,7 +461,7 @@ buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
if (urb_init) {
rc = em28xx_init_isoc(dev, EM28XX_NUM_PACKETS,
EM28XX_NUM_BUFS, dev->max_pkt_size,
- em28xx_isoc_copy, EM28XX_ANALOG_CAPTURE);
+ em28xx_isoc_copy);
if (rc < 0)
goto fail;
}
@@ -1534,8 +1534,8 @@ static int em28xx_v4l2_open(struct inode *inode, struct file *filp)
em28xx_videodbg("open minor=%d type=%s users=%d\n",
minor, v4l2_type_names[fh_type], dev->users);
- fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
+ fh = kzalloc(sizeof(struct em28xx_fh), GFP_KERNEL);
if (!fh) {
em28xx_errdev("em28xx-video.c: Out of memory?!\n");
return -ENOMEM;
@@ -1552,9 +1552,15 @@ static int em28xx_v4l2_open(struct inode *inode, struct file *filp)
dev->hscale = 0;
dev->vscale = 0;
+ em28xx_set_mode(dev, EM28XX_ANALOG_MODE);
em28xx_set_alternate(dev);
em28xx_resolution_set(dev);
+ /* Needed, since GPIO might have disabled power of
+ some i2c device
+ */
+ em28xx_config_i2c(dev);
+
}
if (fh->radio) {
em28xx_videodbg("video_open: setting radio device\n");
@@ -1568,6 +1574,7 @@ static int em28xx_v4l2_open(struct inode *inode, struct file *filp)
sizeof(struct em28xx_buffer), fh);
mutex_unlock(&dev->lock);
+
return errCode;
}
@@ -1647,6 +1654,7 @@ static int em28xx_v4l2_close(struct inode *inode, struct file *filp)
/* do this before setting alternate! */
em28xx_uninit_isoc(dev);
+ em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
/* set alternate 0 */
dev->alt = 0;
diff --git a/drivers/media/video/em28xx/em28xx.h b/drivers/media/video/em28xx/em28xx.h
index e4a56d8dfcf4..e0d119c22810 100644
--- a/drivers/media/video/em28xx/em28xx.h
+++ b/drivers/media/video/em28xx/em28xx.h
@@ -110,6 +110,7 @@
#define EM2800_I2C_WRITE_TIMEOUT 20
enum em28xx_mode {
+ EM28XX_MODE_UNDEFINED,
EM28XX_ANALOG_MODE,
EM28XX_DIGITAL_MODE,
};
@@ -228,7 +229,7 @@ enum em28xx_decoder {
struct em28xx_reg_seq {
int reg;
- unsigned char val;
+ unsigned char val, mask;
int sleep;
};
@@ -274,12 +275,6 @@ enum em28xx_dev_state {
DEV_MISCONFIGURED = 0x04,
};
-enum em28xx_capture_mode {
- EM28XX_CAPTURE_OFF = 0,
- EM28XX_ANALOG_CAPTURE,
- EM28XX_DIGITAL_CAPTURE,
-};
-
#define EM28XX_AUDIO_BUFS 5
#define EM28XX_NUM_AUDIO_PACKETS 64
#define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */
@@ -335,9 +330,12 @@ struct em28xx {
/* Some older em28xx chips needs a waiting time after writing */
unsigned int wait_after_write;
- /* GPIO sequences for tuner callback */
+ /* GPIO sequences for analog and digital mode */
struct em28xx_reg_seq *analog_gpio, *digital_gpio;
+ /* GPIO sequences for tuner callbacks */
+ struct em28xx_reg_seq *tun_analog_gpio, *tun_digital_gpio;
+
int video_inputs; /* number of video inputs */
struct list_head devlist;
@@ -415,6 +413,9 @@ struct em28xx {
enum em28xx_mode mode;
+ /* Caches GPO and GPIO registers */
+ unsigned char reg_gpo, reg_gpio;
+
struct em28xx_dvb *dvb;
};
@@ -455,9 +456,10 @@ int em28xx_resolution_set(struct em28xx *dev);
int em28xx_set_alternate(struct em28xx *dev);
int em28xx_init_isoc(struct em28xx *dev, int max_packets,
int num_bufs, int max_pkt_size,
- int (*isoc_copy) (struct em28xx *dev, struct urb *urb),
- int cap_type);
+ int (*isoc_copy) (struct em28xx *dev, struct urb *urb));
void em28xx_uninit_isoc(struct em28xx *dev);
+int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
+int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
/* Provided by em28xx-video.c */
int em28xx_register_extension(struct em28xx_ops *dev);