From d20a7f7277785e6f7fbe02eb469f7a99a9f058a4 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sat, 23 Jul 2011 09:51:12 -0300 Subject: [PATCH] [media] az6007: Fix the I2C code in order to handle mt2063 mt2063 uses a one-byte transfer. This requires a special handling inside the i2c code. Fix it to properly accept i2c reads. This is needed to make the mt2063 to be detected. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/dvb-usb/az6007.c | 47 +++++++++++++++++++----------- 1 file changed, 30 insertions(+), 17 deletions(-) diff --git a/drivers/media/dvb/dvb-usb/az6007.c b/drivers/media/dvb/dvb-usb/az6007.c index 6a21f928550a..56126d41a604 100644 --- a/drivers/media/dvb/dvb-usb/az6007.c +++ b/drivers/media/dvb/dvb-usb/az6007.c @@ -42,7 +42,7 @@ struct az6007_device_state { struct drxk_config terratec_h7_drxk = { .adr = 0x29, .single_master = 1, - .no_i2c_bridge = 1, + .no_i2c_bridge = 0, .microcode_name = "dvb-usb-terratec-h5-drxk.fw", }; @@ -451,7 +451,6 @@ static int az6007_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msgs[],int nu for (i = 0; i < num; i++) { addr = msgs[i].addr << 1; - if (((i + 1) < num) && (msgs[i].len == 1) && (!msgs[i].flags & I2C_M_RD) @@ -462,44 +461,55 @@ static int az6007_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msgs[],int nu * the first xfer has just 1 byte length. * Need to join both into one operation */ - printk("az6007 I2C xfer write+read addr=0x%x len=%d/%d: ", - addr, msgs[i].len, msgs[i + 1].len); + if (dvb_usb_az6007_debug & 2) + printk(KERN_DEBUG + "az6007 I2C xfer write+read addr=0x%x len=%d/%d: ", + addr, msgs[i].len, msgs[i + 1].len); req = 0xb9; - index = 0; - value = addr; - for (j = 0; j < msgs[i].len; j++) - data[j] = msgs[i].buf[j]; + index = msgs[i].buf[0]; + value = addr | (1 << 8); length = 6 + msgs[i + 1].len; len = msgs[i + 1].len; ret = az6007_usb_in_op(d,req,value,index,data,length); if (ret >= len) { for (j = 0; j < len; j++) { msgs[i + 1].buf[j] = data[j + 5]; - printk("0x%02x ", msgs[i + 1].buf[j]); + if (dvb_usb_az6007_debug & 2) + printk(KERN_CONT + "0x%02x ", + msgs[i + 1].buf[j]); } } else ret = -EIO; i++; } else if (!(msgs[i].flags & I2C_M_RD)) { /* write bytes */ -// printk("az6007 I2C xfer write addr=0x%x len=%d: ", -// addr, msgs[i].len); + if (dvb_usb_az6007_debug & 2) + printk(KERN_DEBUG + "az6007 I2C xfer write addr=0x%x len=%d: ", + addr, msgs[i].len); req = 0xbd; index = msgs[i].buf[0]; value = addr | (1 << 8); length = msgs[i].len - 1; len = msgs[i].len - 1; -// printk("(0x%02x) ", msgs[i].buf[0]); + if (dvb_usb_az6007_debug & 2) + printk(KERN_CONT + "(0x%02x) ", msgs[i].buf[0]); for (j = 0; j < len; j++) { data[j] = msgs[i].buf[j + 1]; -// printk("0x%02x ", data[j]); + if (dvb_usb_az6007_debug & 2) + printk(KERN_CONT + "0x%02x ", data[j]); } ret = az6007_usb_out_op(d,req,value,index,data,length); } else { /* read bytes */ -// printk("az6007 I2C xfer read addr=0x%x len=%d: ", -// addr, msgs[i].len); + if (dvb_usb_az6007_debug & 2) + printk(KERN_DEBUG + "az6007 I2C xfer read addr=0x%x len=%d: ", + addr, msgs[i].len); req = 0xb9; index = msgs[i].buf[0]; value = addr; @@ -509,10 +519,13 @@ static int az6007_i2c_xfer(struct i2c_adapter *adap,struct i2c_msg msgs[],int nu for (j = 0; j < len; j++) { msgs[i].buf[j] = data[j + 5]; -// printk("0x%02x ", data[j + 5]); + if (dvb_usb_az6007_debug & 2) + printk(KERN_CONT + "0x%02x ", data[j + 5]); } } -// printk("\n"); + if (dvb_usb_az6007_debug & 2) + printk(KERN_CONT "\n"); if (ret < 0) goto err; } -- 2.20.1