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From: "Enrico Weigelt, metux IT consult" <lkml@metux.net>
To: Esben Haabendal <esben@haabendal.dk>,
	"Enrico Weigelt, metux IT consult" <info@metux.net>
Cc: linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org,
	andrew@aj.id.au, andriy.shevchenko@linux.intel.com,
	macro@linux-mips.org, vz@mleia.com, slemieux.tyco@gmail.com,
	khilman@baylibre.com, liviu.dudau@arm.com, sudeep.holla@arm.com,
	lorenzo.pieralisi@arm.com, davem@davemloft.net,
	jacmet@sunsite.dk, linux@prisktech.co.nz, matthias.bgg@gmail.com,
	linux-mips@vger.kernel.org, linux-serial@vger.kernel.org,
	linux-ia64@vger.kernel.org, linux-amlogic@lists.infradead.org,
	linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org
Subject: Re: [PATCH 40/41] drivers: tty: serial: helper for setting mmio range
Date: Mon, 29 Apr 2019 11:43:13 +0200	[thread overview]
Message-ID: <d0b966eb-46b7-d145-92ed-3c62c495f41b@metux.net> (raw)
In-Reply-To: <87ef5lz423.fsf@haabendal.dk>

On 29.04.19 09:03, Esben Haabendal wrote:

> Why not simply replace iobase, mapbase and mapsize with a struct
> resource value instead?

That was actually my original goal, when I started this. But the
situation is a bit more tricky. Many drivers (especially the old ones)
initialize these fields in different ways. And there're many places
accessing these fields.

Drivers for old devices should be handled w/ great care. I don't have
access to all that hardware, so I can't test it. Therefore, I'm trying
to move in small steps. One step ahead another.

One of my next steps would be factoring out more common operations
(eg. mapping, etc) into helpers, up to a point, where someday no driver
is accessing these fields directly anymore.

Then we could easily move everything into struct resource. On that
road, we'd also need to find a way for handling the specialities of
the various UPIO_* modes via struct resource.


--mtx

-- 
Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
info@metux.net -- +49-151-27565287

  reply	other threads:[~2019-04-29  9:43 UTC|newest]

Thread overview: 83+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-27 12:51 serial drivers polishing Enrico Weigelt, metux IT consult
2019-04-27 12:51 ` [PATCH 01/41] drivers: tty: serial: dz: use dev_err() instead of printk() Enrico Weigelt, metux IT consult
2019-04-27 13:29   ` Greg KH
2019-04-29 14:11     ` Enrico Weigelt, metux IT consult
2019-04-29 14:23       ` Greg KH
2019-04-27 13:31   ` Greg KH
2019-04-29  7:23     ` Enrico Weigelt, metux IT consult
2019-04-29 12:37     ` Enrico Weigelt, metux IT consult
2019-04-29 13:12       ` Greg KH
2019-05-01  2:20         ` Maciej W. Rozycki
2019-04-27 12:51 ` [PATCH 02/41] drivers: tty: serial: dz: include <linux/io.h> instead of <asm/io.h> Enrico Weigelt, metux IT consult
2019-04-27 12:51 ` [PATCH 03/41] drivers: tty: serial: dz: fix missing parentheses Enrico Weigelt, metux IT consult
2019-04-27 12:51 ` [PATCH 04/41] drivers: tty: serial: dz: fix use fix bare 'unsigned' Enrico Weigelt, metux IT consult
2019-04-27 12:51 ` [PATCH 05/41] drivers: tty: serial: dz: use pr_info() instead of incomplete printk() Enrico Weigelt, metux IT consult
2019-04-27 13:30   ` Greg KH
2019-04-27 12:51 ` [PATCH 06/41] drivers: tty: serial: sb1250-duart: use dev_err() instead of printk() Enrico Weigelt, metux IT consult
2019-05-01  2:29   ` Maciej W. Rozycki
2019-04-27 12:51 ` [PATCH 07/41] drivers: tty: serial: sb1250-duart: include <linux/io.h> instead of <asm/io.h> Enrico Weigelt, metux IT consult
2019-04-27 12:51 ` [PATCH 08/41] drivers: tty: serial: sb1250-duart: fix checkpatch warning on printk() Enrico Weigelt, metux IT consult
2019-04-27 12:51 ` [PATCH 09/41] drivers: tty: serial: sb1250-duart: fill mapsize and use it Enrico Weigelt, metux IT consult
2019-04-27 12:51 ` [PATCH 10/41] drivers: tty: serial: sb1250-duart: fix missing parentheses Enrico Weigelt, metux IT consult
2019-04-27 13:32   ` Greg KH
2019-04-27 12:51 ` [PATCH 11/41] drivers: tty: serial: sb1250-duart: fix formatting error Enrico Weigelt, metux IT consult
2019-04-27 12:51 ` [PATCH 12/41] drivers: tty: serial: uartlite: use dev_dbg() instead of pr_debug() Enrico Weigelt, metux IT consult
2019-04-29 15:26   ` Peter Korsgaard
2019-04-27 12:51 ` [PATCH 13/41] drivers: tty: serial: uartlite: fill mapsize and use it Enrico Weigelt, metux IT consult
2019-04-29 15:19   ` Peter Korsgaard
2019-04-29 18:26     ` Enrico Weigelt, metux IT consult
2019-04-27 12:51 ` [PATCH 14/41] drivers: tty: serial: uartlite: remove unnecessary braces Enrico Weigelt, metux IT consult
2019-04-29 15:20   ` Peter Korsgaard
2019-04-27 12:51 ` [PATCH 15/41] drivers: tty: serial: uartlite: fix use fix bare 'unsigned' Enrico Weigelt, metux IT consult
2019-04-29 15:21   ` Peter Korsgaard
2019-04-27 12:51 ` [PATCH 16/41] drivers: tty: serial: uartlite: fix overlong lines Enrico Weigelt, metux IT consult
2019-04-29 15:24   ` Peter Korsgaard
2019-04-27 12:51 ` [PATCH 17/41] drivers: tty: serial: apbuart: fix logging calls Enrico Weigelt, metux IT consult
2019-04-27 12:51 ` [PATCH 18/41] drivers: tty: serial: apbuart: use dev_info() instead of printk() Enrico Weigelt, metux IT consult
2019-04-27 12:52 ` [PATCH 19/41] drivers: tty: serial: apbuart: fix code formatting Enrico Weigelt, metux IT consult
2019-04-27 12:52 ` [PATCH 20/41] drivers: tty: serial: cpm_uart: use dev_err()/dev_warn() instead of printk() Enrico Weigelt, metux IT consult
2019-04-29 16:02   ` Christophe Leroy
2019-04-27 12:52 ` [PATCH 21/41] drivers: tty: serial: cpm_uart: fix includes Enrico Weigelt, metux IT consult
2019-04-29 16:02   ` Christophe Leroy
2019-04-27 12:52 ` [PATCH 22/41] drivers: tty: serial: cpm_uart: fix logging calls Enrico Weigelt, metux IT consult
2019-04-29 15:59   ` Christophe Leroy
2019-04-29 16:20     ` Enrico Weigelt, metux IT consult
2019-04-30 14:10     ` Andy Shevchenko
2019-04-27 12:52 ` [PATCH 23/41] drivers: tty: serial: cpm_uart: fix styling issues Enrico Weigelt, metux IT consult
2019-04-29 15:56   ` Christophe Leroy
2019-04-27 12:52 ` [PATCH 24/41] drivers: tty: serial: timbuart: use dev_err() instead of printk() Enrico Weigelt, metux IT consult
2019-04-27 12:52 ` [PATCH 25/41] drivers: tty: serial: timbuart: fix formatting issues Enrico Weigelt, metux IT consult
2019-04-27 12:52 ` [PATCH 26/41] drivers: tty: serial: sunzilog: use dev_info() instead of printk() Enrico Weigelt, metux IT consult
2019-04-27 12:52 ` [PATCH 27/41] drivers: tty: serial: sunzilog: fix formatting issues Enrico Weigelt, metux IT consult
2019-04-27 12:52 ` [PATCH 28/41] drivers: tty: serial: sunzilog: fix includes Enrico Weigelt, metux IT consult
2019-04-27 12:52 ` [PATCH 29/41] drivers: tty: serial: sunzilog: cleanup logging Enrico Weigelt, metux IT consult
2019-04-27 12:52 ` [PATCH 30/41] drivers: tty: serial: ioc4_serial: use dev_warn() instead of printk() Enrico Weigelt, metux IT consult
2019-04-27 12:52 ` [PATCH 31/41] drivers: tty: serial: ioc4_serial: use pr_*() " Enrico Weigelt, metux IT consult
2019-04-27 12:52 ` [PATCH 32/41] drivers: tty: serial: 21285: define's for address/size, use mapsize field Enrico Weigelt, metux IT consult
2019-04-27 12:52 ` [PATCH 33/41] drivers: tty: serial: zs: use dev_err() instead of printk() Enrico Weigelt, metux IT consult
2019-04-27 12:52 ` [PATCH 34/41] drivers: tty: serial: zs: fill mapsize and use it Enrico Weigelt, metux IT consult
2019-04-27 12:52 ` [PATCH 35/41] drivers: tty: serial: 8250: add mapsize to platform data Enrico Weigelt, metux IT consult
2019-04-29  7:06   ` Esben Haabendal
2019-04-27 12:52 ` [PATCH 36/41] drivers: tty: serial: 8250: store mmio resource size in port struct Enrico Weigelt, metux IT consult
2019-04-28 15:18   ` Andy Shevchenko
2019-04-29 14:55     ` Enrico Weigelt, metux IT consult
2019-04-29 15:39       ` Andy Shevchenko
2019-04-27 12:52 ` [PATCH 37/41] drivers: tty: serial: 8250: simplify io resource size computation Enrico Weigelt, metux IT consult
2019-04-27 13:03   ` John Paul Adrian Glaubitz
2019-04-29 15:58     ` Enrico Weigelt, metux IT consult
2019-04-28 15:21   ` Andy Shevchenko
2019-04-29  6:48     ` Enrico Weigelt, metux IT consult
2019-04-29 13:19       ` Andy Shevchenko
2019-04-27 12:52 ` [PATCH 38/41] drivers: tty: serial: xilinx_uartps: fill mapsize and use it Enrico Weigelt, metux IT consult
2019-04-27 12:52 ` [PATCH 39/41] drivers: tty: serial: pmac_zilog: " Enrico Weigelt, metux IT consult
2019-04-27 12:52 ` [PATCH 40/41] drivers: tty: serial: helper for setting mmio range Enrico Weigelt, metux IT consult
2019-04-28 15:39   ` Andy Shevchenko
2019-04-29 10:12     ` Enrico Weigelt, metux IT consult
2019-04-29 13:28       ` Andy Shevchenko
2019-04-29  6:57   ` Esben Haabendal
2019-04-29  7:03   ` Esben Haabendal
2019-04-29  9:43     ` Enrico Weigelt, metux IT consult [this message]
2019-04-27 12:52 ` [PATCH 41/41] drivers: tty: serial: lpc32xx_hs: fill mapsize and use it Enrico Weigelt, metux IT consult
2019-04-30 20:52   ` Vladimir Zapolskiy
2019-04-29 16:16 ` serial drivers polishing Christophe Leroy
2019-04-29 16:50   ` Enrico Weigelt, metux IT consult

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