From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Peter Hung <hpeter@gmail.com>,
linus.walleij@linaro.org, gnurou@gmail.com,
gregkh@linuxfoundation.org, paul.gortmaker@windriver.com,
lee.jones@linaro.org, jslaby@suse.com,
gnomes@lxorguk.ukuu.org.uk, peter_hong@fintek.com.tw
Cc: heikki.krogerus@linux.intel.com, peter@hurleysoftware.com,
soeren.grunewald@desy.de, udknight@gmail.com,
adam.lee@canonical.com, arnd@arndb.de, manabian@gmail.com,
scottwood@freescale.com, yamada.masahiro@socionext.com,
paul.burton@imgtec.com, mans@mansr.com, matthias.bgg@gmail.com,
ralf@linux-mips.org, linux-kernel@vger.kernel.org,
linux-gpio@vger.kernel.org, linux-serial@vger.kernel.org,
tom_tsai@fintek.com.tw,
Peter Hung <hpeter+linux_kernel@gmail.com>
Subject: Re: [PATCH V4 1/4] mfd: f81504-core: Add Fintek F81504/508/512 PCIE-to-UART/GPIO core support
Date: Tue, 23 Feb 2016 13:05:17 +0200 [thread overview]
Message-ID: <1456225517.13244.41.camel@linux.intel.com> (raw)
In-Reply-To: <1456209003-22396-2-git-send-email-hpeter+linux_kernel@gmail.com>
On Tue, 2016-02-23 at 14:30 +0800, Peter Hung wrote:
> The Fintek F81504/508/512 had implemented the basic serial port
> function in
> 8250_pci.c. We try to implement high baudrate & GPIOLIB with a spilt
> file
> 8250_f81504.c, but it seems too complex to add GPIOLIB.
[...]
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -345,6 +345,18 @@ config HTC_I2CPLD
> This device provides input and output GPIOs through an I2C
> interface to one or more sub-chips.
>
> +config MFD_FINTEK_F81504_CORE
> + tristate "Fintek F81504/508/512 PCIE-to-UART/GPIO MFD
> support"
> + depends on PCI
> + select MFD_CORE
> + default SERIAL_8250
SERIAL_8250_PCI ?
> +static bool f81504_is_gpio(unsigned int idx, u8 gpio_en)
> +{
> + unsigned int i;
> +
> + /* Find every port to check is multi-function port */
> + for (i = 0; i < ARRAY_SIZE(fintek_gpio_mapping); i++) {
> + if (fintek_gpio_mapping[i] != idx || !(gpio_en &
> BIT(i)))
> + continue;
> +
> + /*
> + * This port is multi-function and enabled as gpio
> mode.
> + * So we'll not configure it as serial port.
> + */
> + return true;
Perhaps
if (fintek_gpio_mapping[i] == idx && (gpio_en & BIT(i)))
return true;
?
> + }
> +
> + return false;
> +}
--
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Intel Finland Oy
next prev parent reply other threads:[~2016-02-23 11:04 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-23 6:29 [PATCH V4 0/4] Transform Fintek PCIE driver from 8250 to MFD Peter Hung
2016-02-23 6:30 ` [PATCH V4 1/4] mfd: f81504-core: Add Fintek F81504/508/512 PCIE-to-UART/GPIO core support Peter Hung
2016-02-23 11:05 ` Andy Shevchenko [this message]
2016-03-02 7:34 ` Peter Hung
2016-02-23 6:30 ` [PATCH V4 2/4] gpio: gpio-f81504: Add Fintek F81504/508/512 PCIE-to-UART/GPIO GPIOLIB support Peter Hung
2016-02-25 9:59 ` Linus Walleij
2016-02-23 6:30 ` [PATCH V4 3/4] 8250: 8250_f81504: Add Fintek F81504/508/512 PCIE-to-UART/GPIO UART support Peter Hung
2016-02-23 6:30 ` [PATCH V4 4/4] serial: 8250_pci: Remove Fintek F81504/508/512 UART driver Peter Hung
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