V4L/DVB (7469): Preparation for supporting new devices, cleanup and saneness

To prepare the support for new device to the flexcop-family some preparation and cleanups was done + some saneness:

- created an i2c-adapter for each i2c-port available. Easier usage for devices with several device on different i2c-busses
- initialize i2c before doing the eeprom read
- changed the way to attach the different frontends, easier to read now
- enabled support for i2c-devices having no register address (1-byte access)

Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 10 insertions, 7 deletions

diff --git a/drivers/media/dvb/b2c2/flexcop-usb.c b/drivers/media/dvb/b2c2/flexcop-usb.c
index 87fb75f0d1cf..449fb5c3d0b1 100644
--- a/drivers/media/dvb/b2c2/flexcop-usb.c
+++ b/drivers/media/dvb/b2c2/flexcop-usb.c
@@ -211,10 +211,11 @@ static int flexcop_usb_utility_req(struct flexcop_usb *fc_usb, int set,
 #endif
 
 /* usb i2c stuff */
-static int flexcop_usb_i2c_req(struct flexcop_usb *fc_usb,
+static int flexcop_usb_i2c_req(struct flexcop_i2c_adapter *i2c,
                 flexcop_usb_request_t req, flexcop_usb_i2c_function_t func,
-                flexcop_i2c_port_t port, u8 chipaddr, u8 addr, u8 *buf, u8 buflen)
+                u8 chipaddr, u8 addr, u8 *buf, u8 buflen)
 {
+        struct flexcop_usb *fc_usb = i2c->fc->bus_specific;
         u16 wValue, wIndex;
         int nWaitTime,pipe,len;
 //      u8 dwRequestType;
@@ -242,7 +243,7 @@ static int flexcop_usb_i2c_req(struct flexcop_usb *fc_usb,
                         deb_info("unsupported function for i2c_req %x\n",func);
                         return -EINVAL;
         }
-        wValue = (func << 8 ) | (port << 4);
+        wValue = (func << 8) | (i2c->port << 4);
         wIndex = (chipaddr << 8 ) | addr;
 
         deb_i2c("i2c %2d: %02x %02x %02x %02x %02x %02x\n",func,request_type,req,
@@ -274,13 +275,15 @@ static int flexcop_usb_write_ibi_reg(struct flexcop_device *fc, flexcop_ibi_regi
         return flexcop_usb_readwrite_dw(fc,reg, &val.raw, 0);
 }
 
-static int flexcop_usb_i2c_request(struct flexcop_device *fc, flexcop_access_op_t op,
-                flexcop_i2c_port_t port, u8 chipaddr, u8 addr, u8 *buf, u16 len)
+static int flexcop_usb_i2c_request(struct flexcop_i2c_adapter *i2c,
+        flexcop_access_op_t op, u8 chipaddr, u8 addr, u8 *buf, u16 len)
 {
         if (op == FC_READ)
-                return flexcop_usb_i2c_req(fc->bus_specific,B2C2_USB_I2C_REQUEST,USB_FUNC_I2C_READ,port,chipaddr,addr,buf,len);
+                return flexcop_usb_i2c_req(i2c, B2C2_USB_I2C_REQUEST,
+                        USB_FUNC_I2C_READ, chipaddr, addr, buf, len);
         else
-                return flexcop_usb_i2c_req(fc->bus_specific,B2C2_USB_I2C_REQUEST,USB_FUNC_I2C_WRITE,port,chipaddr,addr,buf,len);
+                return flexcop_usb_i2c_req(i2c, B2C2_USB_I2C_REQUEST,
+                        USB_FUNC_I2C_WRITE, chipaddr, addr, buf, len);
 }
 
 static void flexcop_usb_process_frame(struct flexcop_usb *fc_usb, u8 *buffer, int buffer_length)