USB: ezusb: add support for Cypress FX2LP

This Patch adds support for the newer Cypress FX2LP. It also adapts
three drivers currently using ezusb to the interface change. (whiteheat
and keyspan[_pda])

Signed-off-by: René Bürgel <rene.buergel@sohard.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

4 files changed, 42 insertions, 14 deletions

diff --git a/drivers/usb/serial/ezusb.c b/drivers/usb/serial/ezusb.c
index a9b5263221fa..bc3076f2c066 100644
--- a/drivers/usb/serial/ezusb.c
+++ b/drivers/usb/serial/ezusb.c
@@ -14,11 +14,25 @@
 #include <linux/module.h>
 #include <linux/usb.h>
 
-/* EZ-USB Control and Status Register.  Bit 0 controls 8051 reset */
-#define CPUCS_REG    0x7F92
+struct ezusb_fx_type {
+        /* EZ-USB Control and Status Register.  Bit 0 controls 8051 reset */
+        unsigned short cpucs_reg;
+        unsigned short max_internal_adress;
+};
 
-/* Command for writing to internal memory */
+struct ezusb_fx_type ezusb_fx1 = {
+        .cpucs_reg = 0x7F92,
+        .max_internal_adress = 0x1B3F,
+};
+
+struct ezusb_fx_type ezusb_fx2 = {
+        .cpucs_reg = 0xE600,
+        .max_internal_adress = 0x3FFF,
+};
+
+/* Commands for writing to memory */
 #define WRITE_INT_RAM 0xA0
+#define WRITE_EXT_RAM 0xA3
 
 int ezusb_writememory(struct usb_device *dev, int address,
                                 unsigned char *data, int length, __u8 request)
@@ -44,13 +58,24 @@ int ezusb_writememory(struct usb_device *dev, int address,
 }
 EXPORT_SYMBOL_GPL(ezusb_writememory);
 
-int ezusb_set_reset(struct usb_device *dev, unsigned char reset_bit)
+int ezusb_set_reset(struct usb_device *dev, unsigned short cpucs_reg,
+                         unsigned char reset_bit)
 {
-        int response = ezusb_writememory(dev, CPUCS_REG, &reset_bit, 1, WRITE_INT_RAM);
+        int response = ezusb_writememory(dev, cpucs_reg, &reset_bit, 1, WRITE_INT_RAM);
         if (response < 0)
                 dev_err(&dev->dev, "%s-%d failed: %d\n",
                                                 __func__, reset_bit, response);
         return response;
 }
-EXPORT_SYMBOL_GPL(ezusb_set_reset);
 
+int ezusb_fx1_set_reset(struct usb_device *dev, unsigned char reset_bit)
+{
+        return ezusb_set_reset(dev, ezusb_fx1.cpucs_reg, reset_bit);
+}
+EXPORT_SYMBOL_GPL(ezusb_fx1_set_reset);
+
+int ezusb_fx2_set_reset(struct usb_device *dev, unsigned char reset_bit)
+{
+        return ezusb_set_reset(dev, ezusb_fx2.cpucs_reg, reset_bit);
+}
+EXPORT_SYMBOL_GPL(ezusb_fx2_set_reset);
diff --git a/drivers/usb/serial/keyspan.c b/drivers/usb/serial/keyspan.c
index 566056cb04dc..4f25849d343e 100644
--- a/drivers/usb/serial/keyspan.c
+++ b/drivers/usb/serial/keyspan.c
@@ -43,6 +43,7 @@
 #include <linux/uaccess.h>
 #include <linux/usb.h>
 #include <linux/usb/serial.h>
+#include <linux/usb/ezusb.h>
 #include "keyspan.h"
 
 /*
@@ -1245,7 +1246,7 @@ static int keyspan_fake_startup(struct usb_serial *serial)
         dev_dbg(&serial->dev->dev, "Uploading Keyspan %s firmware.\n", fw_name);
 
                 /* download the firmware image */
-        response = ezusb_set_reset(serial->dev, 1);
+        response = ezusb_fx1_set_reset(serial->dev, 1);
 
         record = (const struct ihex_binrec *)fw->data;
 
@@ -1264,7 +1265,7 @@ static int keyspan_fake_startup(struct usb_serial *serial)
         release_firmware(fw);
                 /* bring device out of reset. Renumeration will occur in a
                    moment and the new device will bind to the real driver */
-        response = ezusb_set_reset(serial->dev, 0);
+        response = ezusb_fx1_set_reset(serial->dev, 0);
 
         /* we don't want this device to have a driver assigned to it. */
         return 1;
diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c
index 124d4e5d3d10..39ab6687ce23 100644
--- a/drivers/usb/serial/keyspan_pda.c
+++ b/drivers/usb/serial/keyspan_pda.c
@@ -30,6 +30,7 @@
 #include <linux/uaccess.h>
 #include <linux/usb.h>
 #include <linux/usb/serial.h>
+#include <linux/usb/ezusb.h>
 
 /* make a simple define to handle if we are compiling keyspan_pda or xircom support */
 #if defined(CONFIG_USB_SERIAL_KEYSPAN_PDA) || defined(CONFIG_USB_SERIAL_KEYSPAN_PDA_MODULE)
@@ -678,7 +679,7 @@ static int keyspan_pda_fake_startup(struct usb_serial *serial)
         const struct firmware *fw;
 
         /* download the firmware here ... */
-        response = ezusb_set_reset(serial->dev, 1);
+        response = ezusb_fx1_set_reset(serial->dev, 1);
 
         if (0) { ; }
 #ifdef KEYSPAN
@@ -718,7 +719,7 @@ static int keyspan_pda_fake_startup(struct usb_serial *serial)
         release_firmware(fw);
         /* bring device out of reset. Renumeration will occur in a moment
            and the new device will bind to the real driver */
-        response = ezusb_set_reset(serial->dev, 0);
+        response = ezusb_fx1_set_reset(serial->dev, 0);
 
         /* we want this device to fail to have a driver assigned to it. */
         return 1;
diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c
index 80555fc8c95d..8172ea3aead0 100644
--- a/drivers/usb/serial/whiteheat.c
+++ b/drivers/usb/serial/whiteheat.c
@@ -32,6 +32,7 @@
 #include <linux/serial_reg.h>
 #include <linux/serial.h>
 #include <linux/usb/serial.h>
+#include <linux/usb/ezusb.h>
 #include <linux/firmware.h>
 #include <linux/ihex.h>
 #include "whiteheat.h"                  /* WhiteHEAT specific commands */
@@ -211,7 +212,7 @@ static int whiteheat_firmware_download(struct usb_serial *serial,
                 goto out;
         }
         ret = 0;
-        response = ezusb_set_reset(serial->dev, 1);
+        response = ezusb_fx1_set_reset(serial->dev, 1);
 
         record = (const struct ihex_binrec *)loader_fw->data;
         while (record) {
@@ -228,7 +229,7 @@ static int whiteheat_firmware_download(struct usb_serial *serial,
                 record = ihex_next_binrec(record);
         }
 
-        response = ezusb_set_reset(serial->dev, 0);
+        response = ezusb_fx1_set_reset(serial->dev, 0);
 
         record = (const struct ihex_binrec *)firmware_fw->data;
         while (record && be32_to_cpu(record->addr) < 0x1b40)
@@ -248,7 +249,7 @@ static int whiteheat_firmware_download(struct usb_serial *serial,
                 ++record;
         }
 
-        response = ezusb_set_reset(serial->dev, 1);
+        response = ezusb_fx1_set_reset(serial->dev, 1);
 
         record = (const struct ihex_binrec *)firmware_fw->data;
         while (record && be32_to_cpu(record->addr) < 0x1b40) {
@@ -266,7 +267,7 @@ static int whiteheat_firmware_download(struct usb_serial *serial,
                 ++record;
         }
         ret = 0;
-        response = ezusb_set_reset(serial->dev, 0);
+        response = ezusb_fx1_set_reset(serial->dev, 0);
  out:
         release_firmware(loader_fw);
         release_firmware(firmware_fw);