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[2/3] tm6000: bugfix reading problems with demodulator zl10353

Message ID 1266860107-9065-2-git-send-email-stefan.ringel@arcor.de (mailing list archive)
State Superseded, archived
Headers

Commit Message

Stefan Ringel Feb. 22, 2010, 5:35 p.m. UTC 
  From: Stefan Ringel <stefan.ringel@arcor.de>

repairs reading problems zl10353.

for example:

regs  w/o patch  with patch

0x06     0x00        0x7f
0x07     0x33        0x30
0x08     0x00        0x00
0x09     0x58        0x50
0x0f     0x31        0x28
0x10     0x00        0x84



Signed-off-by: Stefan Ringel <stefan.ringel@arcor.de>
---
 drivers/staging/tm6000/tm6000-i2c.c |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)
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Patch

diff --git a/drivers/staging/tm6000/tm6000-i2c.c b/drivers/staging/tm6000/tm6000-i2c.c
index 2de92f3..0da40ec 100644
--- a/drivers/staging/tm6000/tm6000-i2c.c
+++ b/drivers/staging/tm6000/tm6000-i2c.c
@@ -54,9 +54,20 @@  int tm6000_i2c_send_regs(struct tm6000_core *dev, unsigned char addr, __u8 reg,
 int tm6000_i2c_recv_regs(struct tm6000_core *dev, unsigned char addr, __u8 reg, char *buf, int len)
 {
 	int rc;
+	u8 b[2];
 
+	if ((dev->caps.has_zl10353) && (dev->demod_addr << 1 == addr) && (reg % 2 == 0)) {
+		reg -= 1;
+		len += 1;
+
+		rc = tm6000_read_write_usb(dev, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+			REQ_16_SET_GET_I2C_WR1_RDN, addr | reg << 8, 0, b, len);
+
+		*buf = b[1];
+	} else {
 		rc = tm6000_read_write_usb(dev, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
 			REQ_16_SET_GET_I2C_WR1_RDN, addr | reg << 8, 0, buf, len);
+	}
 
 	return rc;
 }