linux-kernel - Re: [PATCH 3/6] tty: mxser: serial: 8250: Relocate device IDs from mxser to 8250

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Message-ID: <0d8da651-4e41-4af2-81cc-732f17aab403@kernel.org>
Date: Tue, 11 Jun 2024 09:42:36 +0200
From: Jiri Slaby <jirislaby@...nel.org>
To: Crescent Hsieh <crescentcy.hsieh@...a.com>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org
Subject: Re: [PATCH 3/6] tty: mxser: serial: 8250: Relocate device IDs from
 mxser to 8250_pci

On 07. 06. 24, 13:43, Crescent Hsieh wrote:
> The devices in mxser could be supported by 8250_pci, so this patch
> relocates these device IDs from mxser into 8250_pci.
> 
> Signed-off-by: Crescent Hsieh <crescentcy.hsieh@...a.com>
> ---
>   drivers/tty/mxser.c                | 50 ------------------------------
>   drivers/tty/serial/8250/8250_pci.c | 50 ++++++++++++++++++++++++++++++
>   2 files changed, 50 insertions(+), 50 deletions(-)
> 
> diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c
> index 458bb1280ebf..b0e7ea6611bf 100644
> --- a/drivers/tty/mxser.c
> +++ b/drivers/tty/mxser.c
> @@ -160,31 +160,6 @@
>   #define MXSER_CUSTOM_DIVISOR	(MXSER_BAUD_BASE * 16)
>   
>   #define PCI_DEVICE_ID_MOXA_RC7000	0x0001
> -#define PCI_DEVICE_ID_MOXA_CP102	0x1020
> -#define PCI_DEVICE_ID_MOXA_CP102UL	0x1021
> -#define PCI_DEVICE_ID_MOXA_CP102U	0x1022
> -#define PCI_DEVICE_ID_MOXA_CP102UF	0x1023
> -#define PCI_DEVICE_ID_MOXA_C104		0x1040
> -#define PCI_DEVICE_ID_MOXA_CP104U	0x1041
> -#define PCI_DEVICE_ID_MOXA_CP104JU	0x1042
> -#define PCI_DEVICE_ID_MOXA_CP104EL	0x1043
> -#define PCI_DEVICE_ID_MOXA_POS104UL	0x1044
> -#define PCI_DEVICE_ID_MOXA_CB108	0x1080
> -#define PCI_DEVICE_ID_MOXA_CP112UL	0x1120
> -#define PCI_DEVICE_ID_MOXA_CT114	0x1140
> -#define PCI_DEVICE_ID_MOXA_CP114	0x1141
> -#define PCI_DEVICE_ID_MOXA_CB114	0x1142
> -#define PCI_DEVICE_ID_MOXA_CP114UL	0x1143
> -#define PCI_DEVICE_ID_MOXA_CP118U	0x1180
> -#define PCI_DEVICE_ID_MOXA_CP118EL	0x1181
> -#define PCI_DEVICE_ID_MOXA_CP132	0x1320
> -#define PCI_DEVICE_ID_MOXA_CP132U	0x1321
> -#define PCI_DEVICE_ID_MOXA_CP134U	0x1340
> -#define PCI_DEVICE_ID_MOXA_CB134I	0x1341
> -#define PCI_DEVICE_ID_MOXA_CP138U	0x1380
> -#define PCI_DEVICE_ID_MOXA_C168		0x1680
> -#define PCI_DEVICE_ID_MOXA_CP168U	0x1681
> -#define PCI_DEVICE_ID_MOXA_CP168EL	0x1682
>   
>   #define MXSER_NPORTS(ddata)		((ddata) & 0xffU)
>   #define MXSER_HIGHBAUD			0x0100
> @@ -212,32 +187,7 @@ static const struct {
>   /* driver_data correspond to the lines in the structure above
>      see also ISA probe function before you change something */
>   static const struct pci_device_id mxser_pcibrds[] = {
> -	{ PCI_DEVICE_DATA(MOXA, C168,		8) },
> -	{ PCI_DEVICE_DATA(MOXA, C104,		4) },
> -	{ PCI_DEVICE_DATA(MOXA, CP132,		2) },
> -	{ PCI_DEVICE_DATA(MOXA, CP114,		4) },
> -	{ PCI_DEVICE_DATA(MOXA, CT114,		4) },
> -	{ PCI_DEVICE_DATA(MOXA, CP102,		2 | MXSER_HIGHBAUD) },

How is this MXSER_HIGHBAUD handled in 8250_pci?

> -	{ PCI_DEVICE_DATA(MOXA, CP104U,		4) },
> -	{ PCI_DEVICE_DATA(MOXA, CP168U,		8) },
> -	{ PCI_DEVICE_DATA(MOXA, CP132U,		2) },
> -	{ PCI_DEVICE_DATA(MOXA, CP134U,		4) },
> -	{ PCI_DEVICE_DATA(MOXA, CP104JU,	4) },
>   	{ PCI_DEVICE_DATA(MOXA, RC7000,		8) }, /* RC7000 */

Can you simply add this exception to mxser_get_nports() I suggested in 
1/6 and drop the whole mxser then \o/?

I had a long-term plan to mount mxser onto serial-core (or 8250). I 
haven't managed the conversion yet. So I am glad to see this.

> -	{ PCI_DEVICE_DATA(MOXA, CP118U,		8) },
> -	{ PCI_DEVICE_DATA(MOXA, CP102UL,	2) },
> -	{ PCI_DEVICE_DATA(MOXA, CP102U,		2) },
> -	{ PCI_DEVICE_DATA(MOXA, CP118EL,	8) },
> -	{ PCI_DEVICE_DATA(MOXA, CP168EL,	8) },
> -	{ PCI_DEVICE_DATA(MOXA, CP104EL,	4) },
> -	{ PCI_DEVICE_DATA(MOXA, CB108,		8) },
> -	{ PCI_DEVICE_DATA(MOXA, CB114,		4) },
> -	{ PCI_DEVICE_DATA(MOXA, CB134I,		4) },
> -	{ PCI_DEVICE_DATA(MOXA, CP138U,		8) },
> -	{ PCI_DEVICE_DATA(MOXA, POS104UL,	4) },
> -	{ PCI_DEVICE_DATA(MOXA, CP114UL,	4) },
> -	{ PCI_DEVICE_DATA(MOXA, CP102UF,	2) },
> -	{ PCI_DEVICE_DATA(MOXA, CP112UL,	2) },
>   	{ }
>   };
-- 
js