From: Ryan Mallon <ryan@bluewatersys.com> To: Alexey Charkov <alchark@gmail.com> Cc: "Russell King - ARM Linux" <linux@arm.linux.org.uk>, linux-arm-kernel@lists.infradead.org, vt8500-wm8505-linux-kernel@googlegroups.com, "Eric Miao" <eric.y.miao@gmail.com>, "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>, "Albin Tonnerre" <albin.tonnerre@free-electrons.com>, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/6 v11] ARM: Add basic architecture support for VIA/WonderMedia 85xx SoC's Date: Thu, 23 Dec 2010 11:59:38 +1300 [thread overview] Message-ID: <4D1282DA.4020804@bluewatersys.com> (raw) In-Reply-To: <20101222222501.GA32693@alchark-u3s> On 12/23/2010 11:25 AM, Alexey Charkov wrote: > This adds support for the family of Systems-on-Chip produced initially > by VIA and now its subsidiary WonderMedia that have recently become > widespread in lower-end Chinese ARM-based tablets and netbooks. > > Support is included for both VT8500 and WM8505, selectable by a > configuration switch at kernel build time. > > Included are basic machine initialization files, register and > interrupt definitions, support for the on-chip interrupt controller, > high-precision OS timer, GPIO lines, necessary macros for early debug, > pulse-width-modulated outputs control, as well as platform device > configurations for the specific drivers implemented elsewhere. > > Signed-off-by: Alexey Charkov <alchark@gmail.com> > --- > > This incorporates latest comments by Ryan regarding helper inlines > in devices-{vt8500,wm8505}.c > > Best regards, > Alexey One final nitpick :-). > +static int vt8500_muxed_gpio_direction_input(struct gpio_chip *chip, > + unsigned offset) > +{ > + struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip); > + unsigned val = readl(regbase + 0x20 + vt8500_chip->regoff); > + > + val &= ~(1 << vt8500_chip->shift << offset); > + writel(val, regbase + 0x20 + vt8500_chip->regoff); The magic numbers (0x20) in the gpio functions should probably be #defined as register names. I'm guessing this is the input enable register? Often people do helper functions for this, i.e: static inline void gpio_write_reg(struct vt8500_gpio_chip *chip, unsigned val, unsigned reg) { writel(val, regbase + chip->regoff + reg); } Other than that, looks good. Reviewed-by: Ryan Mallon <ryan@bluewatersys.com> -- Bluewater Systems Ltd - ARM Technology Solution Centre Ryan Mallon 5 Amuri Park, 404 Barbadoes St ryan@bluewatersys.com PO Box 13 889, Christchurch 8013 http://www.bluewatersys.com New Zealand Phone: +64 3 3779127 Freecall: Australia 1800 148 751 Fax: +64 3 3779135 USA 1800 261 2934
WARNING: multiple messages have this Message-ID (diff)
From: ryan@bluewatersys.com (Ryan Mallon) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 1/6 v11] ARM: Add basic architecture support for VIA/WonderMedia 85xx SoC's Date: Thu, 23 Dec 2010 11:59:38 +1300 [thread overview] Message-ID: <4D1282DA.4020804@bluewatersys.com> (raw) In-Reply-To: <20101222222501.GA32693@alchark-u3s> On 12/23/2010 11:25 AM, Alexey Charkov wrote: > This adds support for the family of Systems-on-Chip produced initially > by VIA and now its subsidiary WonderMedia that have recently become > widespread in lower-end Chinese ARM-based tablets and netbooks. > > Support is included for both VT8500 and WM8505, selectable by a > configuration switch at kernel build time. > > Included are basic machine initialization files, register and > interrupt definitions, support for the on-chip interrupt controller, > high-precision OS timer, GPIO lines, necessary macros for early debug, > pulse-width-modulated outputs control, as well as platform device > configurations for the specific drivers implemented elsewhere. > > Signed-off-by: Alexey Charkov <alchark@gmail.com> > --- > > This incorporates latest comments by Ryan regarding helper inlines > in devices-{vt8500,wm8505}.c > > Best regards, > Alexey One final nitpick :-). > +static int vt8500_muxed_gpio_direction_input(struct gpio_chip *chip, > + unsigned offset) > +{ > + struct vt8500_gpio_chip *vt8500_chip = to_vt8500(chip); > + unsigned val = readl(regbase + 0x20 + vt8500_chip->regoff); > + > + val &= ~(1 << vt8500_chip->shift << offset); > + writel(val, regbase + 0x20 + vt8500_chip->regoff); The magic numbers (0x20) in the gpio functions should probably be #defined as register names. I'm guessing this is the input enable register? Often people do helper functions for this, i.e: static inline void gpio_write_reg(struct vt8500_gpio_chip *chip, unsigned val, unsigned reg) { writel(val, regbase + chip->regoff + reg); } Other than that, looks good. Reviewed-by: Ryan Mallon <ryan@bluewatersys.com> -- Bluewater Systems Ltd - ARM Technology Solution Centre Ryan Mallon 5 Amuri Park, 404 Barbadoes St ryan at bluewatersys.com PO Box 13 889, Christchurch 8013 http://www.bluewatersys.com New Zealand Phone: +64 3 3779127 Freecall: Australia 1800 148 751 Fax: +64 3 3779135 USA 1800 261 2934
next prev parent reply other threads:[~2010-12-22 22:58 UTC|newest] Thread overview: 184+ messages / expand[flat|nested] mbox.gz Atom feed top 2010-11-07 16:28 [PATCH 1/6 v2] ARM: Add basic architecture support for VIA/WonderMedia 85xx SoC's Alexey Charkov 2010-11-07 16:28 ` Alexey Charkov 2010-11-07 16:28 ` [PATCH 2/6 v2] serial: Add support for UART on VIA VT8500 and compatibles Alexey Charkov 2010-11-07 16:28 ` Alexey Charkov 2010-11-07 23:08 ` Alan Cox 2010-11-07 23:08 ` Alan Cox 2010-11-08 0:58 ` [PATCH 2/6 v3] " Alexey Charkov 2010-11-08 0:58 ` Alexey Charkov 2010-11-08 10:46 ` Alan Cox 2010-11-08 10:46 ` Alan Cox 2010-11-08 17:33 ` [PATCH 2/6 v4] " Alexey Charkov 2010-11-08 17:33 ` Alexey Charkov 2010-11-07 16:28 ` [PATCH 3/6 v2] input: Add support for VIA VT8500 and compatibles in i8042 Alexey Charkov 2010-11-07 16:28 ` Alexey Charkov 2010-11-12 22:54 ` Alexey Charkov 2010-11-12 22:54 ` Alexey Charkov 2010-11-12 22:54 ` Alexey Charkov 2010-11-12 23:30 ` Dmitry Torokhov 2010-11-12 23:30 ` Dmitry Torokhov 2010-11-12 23:30 ` Dmitry Torokhov 2010-11-13 0:00 ` Alexey Charkov 2010-11-13 0:00 ` Alexey Charkov 2010-12-22 21:41 ` [PATCH 3/6 v3] " Alexey Charkov 2010-12-22 21:41 ` Alexey Charkov 2010-11-07 16:28 ` [PATCH 4/6 v2] usb: Add support for VIA VT8500 and compatibles in EHCI HCD Alexey Charkov 2010-11-07 16:28 ` Alexey Charkov 2010-11-07 16:28 ` [PATCH 5/6 v2] rtc: Add support for the RTC in VIA VT8500 and compatibles Alexey Charkov 2010-11-07 16:28 ` Alexey Charkov 2010-11-12 22:53 ` Alexey Charkov 2010-11-12 22:53 ` Alexey Charkov 2010-11-13 12:14 ` Lars-Peter Clausen 2010-11-13 12:14 ` Lars-Peter Clausen 2010-11-13 23:56 ` [PATCH 5/6 v3] " Alexey Charkov 2010-11-13 23:56 ` Alexey Charkov 2010-11-14 15:50 ` Lars-Peter Clausen 2010-11-14 15:50 ` Lars-Peter Clausen 2010-11-14 17:00 ` [PATCH 5/6 v4] " Alexey Charkov 2010-11-14 17:00 ` Alexey Charkov 2010-11-23 19:17 ` Alexey Charkov 2010-11-23 19:17 ` Alexey Charkov 2010-11-24 19:23 ` Lars-Peter Clausen 2010-11-24 19:23 ` Lars-Peter Clausen 2010-11-24 22:47 ` [PATCH 5/6 v5] " Alexey Charkov 2010-11-24 22:47 ` Alexey Charkov 2010-11-07 16:28 ` [PATCH 6/6 v2] ARM: Add support for the display controllers in VT8500 and WM8505 Alexey Charkov 2010-11-07 16:28 ` Alexey Charkov 2010-11-08 4:17 ` Paul Mundt 2010-11-08 4:17 ` Paul Mundt 2010-11-08 12:56 ` Alexey Charkov 2010-11-08 12:56 ` Alexey Charkov 2010-11-08 14:14 ` [PATCH 6/6 v3] " Alexey Charkov 2010-11-08 14:14 ` Alexey Charkov 2010-11-08 20:43 ` Paul Mundt 2010-11-08 20:43 ` Paul Mundt 2010-11-08 21:15 ` Alexey Charkov 2010-11-08 21:15 ` Alexey Charkov 2010-11-08 21:30 ` Paul Mundt 2010-11-08 21:30 ` Paul Mundt 2010-11-08 23:42 ` [PATCH 6/6 v4] " Alexey Charkov 2010-11-08 23:42 ` Alexey Charkov 2010-11-08 23:54 ` Paul Mundt 2010-11-08 23:54 ` Paul Mundt 2010-11-09 0:03 ` Alexey Charkov 2010-11-09 0:03 ` Alexey Charkov 2010-11-09 7:36 ` Guennadi Liakhovetski 2010-11-09 7:36 ` Guennadi Liakhovetski 2010-11-09 9:39 ` Paul Mundt 2010-11-09 9:39 ` Paul Mundt 2010-11-09 9:49 ` Alexey Charkov 2010-11-09 9:49 ` Alexey Charkov 2010-11-09 10:33 ` [PATCH 6/6 v3] " Russell King - ARM Linux 2010-11-09 10:33 ` Russell King - ARM Linux 2010-11-09 10:51 ` Paul Mundt 2010-11-09 10:51 ` Paul Mundt 2010-11-09 11:04 ` Russell King - ARM Linux 2010-11-09 11:04 ` Russell King - ARM Linux 2010-11-09 13:02 ` Geert Uytterhoeven 2010-11-09 13:02 ` Geert Uytterhoeven 2010-11-09 13:33 ` Arnd Bergmann 2010-11-09 13:33 ` Arnd Bergmann 2010-11-09 16:20 ` Paul Mundt 2010-11-09 16:20 ` Paul Mundt 2010-11-08 8:47 ` [PATCH 6/6 v2] " Arnd Bergmann 2010-11-08 8:47 ` Arnd Bergmann 2010-11-09 10:23 ` Alexey Charkov 2010-11-09 10:23 ` Alexey Charkov 2010-11-09 15:03 ` Arnd Bergmann 2010-11-09 15:03 ` Arnd Bergmann 2010-11-07 16:57 ` [PATCH 1/6 v2] ARM: Add basic architecture support for VIA/WonderMedia 85xx SoC's Russell King - ARM Linux 2010-11-07 16:57 ` Russell King - ARM Linux 2010-11-07 17:08 ` Alexey Charkov 2010-11-07 17:08 ` Alexey Charkov 2010-11-07 17:17 ` Russell King - ARM Linux 2010-11-07 17:17 ` Russell King - ARM Linux 2010-11-07 18:25 ` [PATCH 1/6 v3] " Alexey Charkov 2010-11-07 18:25 ` Alexey Charkov 2010-11-08 17:19 ` [PATCH 1/6 v4] " Alexey Charkov 2010-11-08 17:19 ` Alexey Charkov 2010-11-10 15:16 ` saeed bishara 2010-11-10 15:16 ` saeed bishara 2010-11-10 15:18 ` Russell King - ARM Linux 2010-11-10 15:18 ` Russell King - ARM Linux 2010-11-10 15:20 ` saeed bishara 2010-11-10 15:20 ` saeed bishara 2010-11-11 21:23 ` [PATCH 1/6 v5] " Alexey Charkov 2010-11-11 21:23 ` Alexey Charkov 2010-11-11 23:49 ` Russell King - ARM Linux 2010-11-11 23:49 ` Russell King - ARM Linux 2010-11-12 16:54 ` [PATCH 1/6 v6] " Alexey Charkov 2010-11-12 16:54 ` Alexey Charkov 2010-11-12 20:14 ` Alexey Charkov 2010-11-12 20:14 ` Alexey Charkov 2010-11-23 19:50 ` [PATCH 1/6 v7] " Alexey Charkov 2010-11-23 19:50 ` Alexey Charkov 2010-12-19 17:40 ` [PATCH 1/6 v8] " Alexey Charkov 2010-12-19 17:40 ` Alexey Charkov 2010-12-20 18:15 ` Arnd Bergmann 2010-12-20 18:15 ` Arnd Bergmann 2010-12-20 19:15 ` Russell King - ARM Linux 2010-12-20 19:15 ` Russell King - ARM Linux 2010-12-20 19:26 ` Alexey Charkov 2010-12-20 19:26 ` Alexey Charkov 2010-12-20 19:54 ` [PATCH 1/6 v9] " Alexey Charkov 2010-12-20 19:54 ` Alexey Charkov 2010-12-20 20:50 ` Ryan Mallon 2010-12-20 20:50 ` Ryan Mallon 2010-12-20 21:48 ` Alexey Charkov 2010-12-20 21:48 ` Alexey Charkov 2010-12-20 22:23 ` Ryan Mallon 2010-12-20 22:23 ` Ryan Mallon 2010-12-20 23:00 ` Alexey Charkov 2010-12-20 23:00 ` Alexey Charkov 2010-12-20 23:22 ` Ryan Mallon 2010-12-20 23:22 ` Ryan Mallon 2010-12-20 23:49 ` Alexey Charkov 2010-12-20 23:49 ` Alexey Charkov 2010-12-21 0:09 ` Alexey Charkov 2010-12-21 0:09 ` Alexey Charkov 2010-12-21 2:32 ` Ryan Mallon 2010-12-21 2:32 ` Ryan Mallon 2010-12-21 10:00 ` Alexey Charkov 2010-12-21 10:00 ` Alexey Charkov 2010-12-21 12:05 ` Arnd Bergmann 2010-12-21 12:05 ` Arnd Bergmann 2010-12-21 19:39 ` Ryan Mallon 2010-12-21 19:39 ` Ryan Mallon 2010-12-22 21:18 ` [PATCH 1/6 v10] " Alexey Charkov 2010-12-22 21:18 ` Alexey Charkov 2010-12-22 21:52 ` Ryan Mallon 2010-12-22 21:52 ` Ryan Mallon 2010-12-22 22:02 ` Alexey Charkov 2010-12-22 22:02 ` Alexey Charkov 2010-12-22 22:32 ` Ryan Mallon 2010-12-22 22:32 ` Ryan Mallon 2010-12-22 22:25 ` [PATCH 1/6 v11] " Alexey Charkov 2010-12-22 22:25 ` Alexey Charkov 2010-12-22 22:59 ` Ryan Mallon [this message] 2010-12-22 22:59 ` Ryan Mallon 2010-12-22 23:38 ` [PATCH 1/6 v12] " Alexey Charkov 2010-12-22 23:38 ` Alexey Charkov 2010-12-28 14:52 ` Alexey Charkov 2010-12-28 14:52 ` Alexey Charkov 2011-01-15 0:53 ` Alexey Charkov 2011-01-15 0:53 ` Alexey Charkov 2011-01-15 0:58 ` Russell King - ARM Linux 2011-01-15 0:58 ` Russell King - ARM Linux 2011-01-15 1:13 ` Alexey Charkov 2011-01-15 1:13 ` Alexey Charkov 2011-01-21 10:43 ` Russell King - ARM Linux 2011-01-21 10:43 ` Russell King - ARM Linux 2011-07-06 12:34 ` [PATCH 1/6 v8] " Russell King - ARM Linux 2011-07-06 12:34 ` Russell King - ARM Linux 2011-07-07 7:13 ` Alexey Charkov 2011-07-07 7:13 ` Alexey Charkov 2011-07-07 7:54 ` Arnd Bergmann 2011-07-07 7:54 ` Arnd Bergmann 2011-07-07 7:59 ` Russell King - ARM Linux 2011-07-07 7:59 ` Russell King - ARM Linux 2011-07-07 8:05 ` Arnd Bergmann 2011-07-07 8:05 ` Arnd Bergmann 2010-11-07 17:00 ` [PATCH 1/6 v2] " Russell King - ARM Linux 2010-11-07 17:00 ` Russell King - ARM Linux 2010-11-07 17:16 ` Alexey Charkov 2010-11-07 17:16 ` Alexey Charkov
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