[PATCH 20/30] staging: comedi: usbdux: move usbdux_firmware_upload()
H Hartley Sweeten
hsweeten at visionengravers.com
Thu Jul 25 23:09:13 UTC 2013
For aesthetics, move this function closer to the (*auto_attach).
Also, rename some of the defined constants that are used by the
firmware upload.
Signed-off-by: H Hartley Sweeten <hsweeten at visionengravers.com>
Cc: Ian Abbott <abbotti at mev.co.uk>
Cc: Greg Kroah-Hartman <gregkh at linuxfondation.org>
---
drivers/staging/comedi/drivers/usbdux.c | 170 +++++++++++++++-----------------
1 file changed, 82 insertions(+), 88 deletions(-)
diff --git a/drivers/staging/comedi/drivers/usbdux.c b/drivers/staging/comedi/drivers/usbdux.c
index 6991e85..92d740a 100644
--- a/drivers/staging/comedi/drivers/usbdux.c
+++ b/drivers/staging/comedi/drivers/usbdux.c
@@ -91,17 +91,16 @@ sampling rate. If you sample two channels you get 4kHz and so on.
#include "comedi_fc.h"
-/* timeout for the USB-transfer in ms*/
-#define BULK_TIMEOUT 1000
+/* constants for firmware upload and download */
+#define USBDUX_FIRMWARE "usbdux_firmware.bin"
+#define USBDUX_FIRMWARE_MAX_LEN 0x2000
+#define USBDUX_FIRMWARE_CMD 0xa0
+#define VENDOR_DIR_IN 0xc0
+#define VENDOR_DIR_OUT 0x40
+#define USBDUX_CPU_CS 0xe600
-/* constants for "firmware" upload and download */
-#define FIRMWARE "usbdux_firmware.bin"
-#define USBDUXSUB_FIRMWARE 0xA0
-#define VENDOR_DIR_IN 0xC0
-#define VENDOR_DIR_OUT 0x40
-
-/* internal addresses of the 8051 processor */
-#define USBDUXSUB_CPUCS 0xE600
+/* timeout for the USB-transfer in ms */
+#define BULK_TIMEOUT 1000
/* 300Hz max frequ under PWM */
#define MIN_PWM_PERIOD ((long)(1E9/300))
@@ -539,80 +538,6 @@ static void usbduxsub_ao_isoc_irq(struct urb *urb)
}
}
-#define FIRMWARE_MAX_LEN 0x2000
-
-static int usbdux_firmware_upload(struct comedi_device *dev,
- const u8 *data, size_t size,
- unsigned long context)
-{
- struct usb_device *usb = comedi_to_usb_dev(dev);
- uint8_t *buf;
- uint8_t *tmp;
- int ret;
-
- if (!data)
- return 0;
-
- if (size > FIRMWARE_MAX_LEN) {
- dev_err(dev->class_dev,
- "usbdux firmware binary it too large for FX2.\n");
- return -ENOMEM;
- }
-
- /* we generate a local buffer for the firmware */
- buf = kmemdup(data, size, GFP_KERNEL);
- if (!buf)
- return -ENOMEM;
-
- /* we need a malloc'ed buffer for usb_control_msg() */
- tmp = kmalloc(1, GFP_KERNEL);
- if (!tmp) {
- kfree(buf);
- return -ENOMEM;
- }
-
- /* stop the current firmware on the device */
- *tmp = 1; /* 7f92 to one */
- ret = usb_control_msg(usb, usb_sndctrlpipe(usb, 0),
- USBDUXSUB_FIRMWARE,
- VENDOR_DIR_OUT,
- USBDUXSUB_CPUCS, 0x0000,
- tmp, 1,
- BULK_TIMEOUT);
- if (ret < 0) {
- dev_err(dev->class_dev, "can not stop firmware\n");
- goto done;
- }
-
- /* upload the new firmware to the device */
- ret = usb_control_msg(usb, usb_sndctrlpipe(usb, 0),
- USBDUXSUB_FIRMWARE,
- VENDOR_DIR_OUT,
- 0, 0x0000,
- buf, size,
- BULK_TIMEOUT);
- if (ret < 0) {
- dev_err(dev->class_dev, "firmware upload failed\n");
- goto done;
- }
-
- /* start the new firmware on the device */
- *tmp = 0; /* 7f92 to zero */
- ret = usb_control_msg(usb, usb_sndctrlpipe(usb, 0),
- USBDUXSUB_FIRMWARE,
- VENDOR_DIR_OUT,
- USBDUXSUB_CPUCS, 0x0000,
- tmp, 1,
- BULK_TIMEOUT);
- if (ret < 0)
- dev_err(dev->class_dev, "can not start firmware\n");
-
-done:
- kfree(tmp);
- kfree(buf);
- return ret;
-}
-
static int usbduxsub_submit_inurbs(struct comedi_device *dev)
{
struct usb_device *usb = comedi_to_usb_dev(dev);
@@ -1635,8 +1560,77 @@ static int usbdux_pwm_config(struct comedi_device *dev,
return -EINVAL;
}
-/* end of PWM */
-/*****************************************************************/
+static int usbdux_firmware_upload(struct comedi_device *dev,
+ const u8 *data, size_t size,
+ unsigned long context)
+{
+ struct usb_device *usb = comedi_to_usb_dev(dev);
+ uint8_t *buf;
+ uint8_t *tmp;
+ int ret;
+
+ if (!data)
+ return 0;
+
+ if (size > USBDUX_FIRMWARE_MAX_LEN) {
+ dev_err(dev->class_dev,
+ "usbdux firmware binary it too large for FX2.\n");
+ return -ENOMEM;
+ }
+
+ /* we generate a local buffer for the firmware */
+ buf = kmemdup(data, size, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ /* we need a malloc'ed buffer for usb_control_msg() */
+ tmp = kmalloc(1, GFP_KERNEL);
+ if (!tmp) {
+ kfree(buf);
+ return -ENOMEM;
+ }
+
+ /* stop the current firmware on the device */
+ *tmp = 1; /* 7f92 to one */
+ ret = usb_control_msg(usb, usb_sndctrlpipe(usb, 0),
+ USBDUX_FIRMWARE_CMD,
+ VENDOR_DIR_OUT,
+ USBDUX_CPU_CS, 0x0000,
+ tmp, 1,
+ BULK_TIMEOUT);
+ if (ret < 0) {
+ dev_err(dev->class_dev, "can not stop firmware\n");
+ goto done;
+ }
+
+ /* upload the new firmware to the device */
+ ret = usb_control_msg(usb, usb_sndctrlpipe(usb, 0),
+ USBDUX_FIRMWARE_CMD,
+ VENDOR_DIR_OUT,
+ 0, 0x0000,
+ buf, size,
+ BULK_TIMEOUT);
+ if (ret < 0) {
+ dev_err(dev->class_dev, "firmware upload failed\n");
+ goto done;
+ }
+
+ /* start the new firmware on the device */
+ *tmp = 0; /* 7f92 to zero */
+ ret = usb_control_msg(usb, usb_sndctrlpipe(usb, 0),
+ USBDUX_FIRMWARE_CMD,
+ VENDOR_DIR_OUT,
+ USBDUX_CPU_CS, 0x0000,
+ tmp, 1,
+ BULK_TIMEOUT);
+ if (ret < 0)
+ dev_err(dev->class_dev, "can not start firmware\n");
+
+done:
+ kfree(tmp);
+ kfree(buf);
+ return ret;
+}
static int usbdux_alloc_usb_buffers(struct comedi_device *dev)
{
@@ -1831,7 +1825,7 @@ static int usbdux_auto_attach(struct comedi_device *dev,
return ret;
}
- ret = comedi_load_firmware(dev, &usb->dev, FIRMWARE,
+ ret = comedi_load_firmware(dev, &usb->dev, USBDUX_FIRMWARE,
usbdux_firmware_upload, 0);
if (ret < 0)
return ret;
@@ -1958,4 +1952,4 @@ module_comedi_usb_driver(usbdux_driver, usbdux_usb_driver);
MODULE_AUTHOR("Bernd Porr, BerndPorr at f2s.com");
MODULE_DESCRIPTION("Stirling/ITL USB-DUX -- Bernd.Porr at f2s.com");
MODULE_LICENSE("GPL");
-MODULE_FIRMWARE(FIRMWARE);
+MODULE_FIRMWARE(USBDUX_FIRMWARE);
--
1.8.3.2
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