On Sunday 08 January 2017 01:02 AM, Andy Shevchenko wrote:
On Sun, Jan 8, 2017 at 1:57 AM, Sudip Mukherjee
<sudipm.mukherjee@xxxxxxxxx> wrote:
Add the serial driver for the exar chips. And also register the
platform device for the exar gpio.
Did you ignore some comments?
IIRC I recommended to use proper vendor name like Exar (or how is it spelled?).
oops, sorry. I missed that.
Headers, if arranged in alphabetical order, will give a build warning.
I think I know how to make it better.
And thanks for revewing that v6. I think those were the worst patch I
have ever posted.
You may do even more better. See below.
+#undef DEBUG
+#include <asm/byteorder.h>
(1)
+#include <linux/pci.h>
Squeez this to the rest
+#include <linux/8250_pci.h>
(2)
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/serial_core.h>
+#include <linux/serial_reg.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/tty.h>
You perhaps need something like this here:
+ empty line
(1) +#include <asm/byteorder.h>
+
(2) +#include <linux/8250_pci.h>
+#include "8250.h"
not sure if I have understood this header thing properly. But let me
play with it and see,
+
+#define PCI_NUM_BAR_RESOURCES 6
<snip>
+static struct pci_device_id exar_pci_tbl[] = {
+ { PCI_DEVICE_SUB(PCI_VENDOR_ID_EXAR,
+ PCI_DEVICE_ID_EXAR_XR17C152,
+ PCI_SUBVENDOR_ID_CONNECT_TECH,
+ PCI_SUBDEVICE_ID_CONNECT_TECH_PCI_UART_2_232), 0, 0,
+ (kernel_ulong_t)&pbn_b0_2_1843200_200 },
You ignored my comment regarding to make a macro(s).
I used PCI_DEVICE_SUB() and PCI_VDEVICE(), but yes, custom macro might
be better here. I was trying to have one custom macro, but with two
different macros it should be ok.
Moreover, some of data, like number of ports, can be easily calculated
from device ID.
yes, but since the baudrate is different i will need to have different
board id for it.
Like: 'PCI_SUBDEVICE_ID_CONNECT_TECH_PCI_UART_4_232' has a device id
'PCI_DEVICE_ID_EXAR_XR17C154' is having a baudrate of 1843200 but the
other devices with the same deviceid will have a baudrate of 921600.
unless, in the probe I compare the subvendor with
PCI_SUBVENDOR_ID_CONNECT_TECH and modify the baud. Let me try.
Thanks for reviewing.
Regards
Sudip
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