Re: [U-Boot] [PATCH v2 2/9] sunxi: initial sun7i pinmux and gpio support

2014-03-27 Thread Ian Campbell
On Wed, 2014-03-26 at 10:01 +0100, Wolfgang Denk wrote: I'm not an expert for ARM, but this indeed looks suspiscious - thanks for reporting this. FYI I made the change which prompted this and the resulting code was the same see https://groups.google.com/forum/#!topic/linux-sunxi/REZ18q0wcDY The

Re: [U-Boot] [PATCH v2 2/9] sunxi: initial sun7i pinmux and gpio support

2014-03-26 Thread Ian Campbell
On Mon, 2014-03-24 at 21:54 +0100, Marek Vasut wrote: + cfg = readl(pio-cfg[0] + index); + cfg = ~(0xf offset); + cfg |= val offset; + + writel(cfg, pio-cfg[0] + index); clrsetbits_le32() here. I looked at this transform in a few different contexts and one concern I

Re: [U-Boot] [PATCH v2 2/9] sunxi: initial sun7i pinmux and gpio support

2014-03-26 Thread Ian Campbell
On Mon, 2014-03-24 at 21:54 +0100, Marek Vasut wrote: +int sunxi_gpio_set_cfgpin(u32 pin, u32 val); +int sunxi_gpio_get_cfgpin(u32 pin); +int sunxi_gpio_set_drv(u32 pin, u32 val); +int sunxi_gpio_set_pull(u32 pin, u32 val); +int name_to_gpio(const char *name); +#define name_to_gpio

Re: [U-Boot] [PATCH v2 2/9] sunxi: initial sun7i pinmux and gpio support

2014-03-26 Thread Marek Vasut
On Wednesday, March 26, 2014 at 09:30:38 AM, Ian Campbell wrote: On Mon, 2014-03-24 at 21:54 +0100, Marek Vasut wrote: + cfg = readl(pio-cfg[0] + index); + cfg = ~(0xf offset); + cfg |= val offset; + + writel(cfg, pio-cfg[0] + index); clrsetbits_le32() here.

Re: [U-Boot] [PATCH v2 2/9] sunxi: initial sun7i pinmux and gpio support

2014-03-26 Thread Marek Vasut
On Wednesday, March 26, 2014 at 09:33:01 AM, Ian Campbell wrote: On Mon, 2014-03-24 at 21:54 +0100, Marek Vasut wrote: +int sunxi_gpio_set_cfgpin(u32 pin, u32 val); +int sunxi_gpio_get_cfgpin(u32 pin); +int sunxi_gpio_set_drv(u32 pin, u32 val); +int sunxi_gpio_set_pull(u32 pin, u32

Re: [U-Boot] [PATCH v2 2/9] sunxi: initial sun7i pinmux and gpio support

2014-03-26 Thread Wolfgang Denk
Dear Ian, [Cc: list truncated / changed] In message 1395822638.29683.9.ca...@dagon.hellion.org.uk you wrote: I looked at this transform in a few different contexts and one concern I had was that readl and writel have barriers in them (after the read and before the write respectively) while

Re: [U-Boot] [PATCH v2 2/9] sunxi: initial sun7i pinmux and gpio support

2014-03-26 Thread Wolfgang Denk
Dear Ian Campbell, In message 1395822781.29683.12.ca...@dagon.hellion.org.uk you wrote: On Mon, 2014-03-24 at 21:54 +0100, Marek Vasut wrote: +int sunxi_gpio_set_cfgpin(u32 pin, u32 val); +int sunxi_gpio_get_cfgpin(u32 pin); +int sunxi_gpio_set_drv(u32 pin, u32 val); +int

Re: [U-Boot] [PATCH v2 2/9] sunxi: initial sun7i pinmux and gpio support

2014-03-26 Thread Ian Campbell
On Wed, 2014-03-26 at 10:03 +0100, Wolfgang Denk wrote: Dear Ian Campbell, In message 1395822781.29683.12.ca...@dagon.hellion.org.uk you wrote: On Mon, 2014-03-24 at 21:54 +0100, Marek Vasut wrote: +int sunxi_gpio_set_cfgpin(u32 pin, u32 val); +int sunxi_gpio_get_cfgpin(u32 pin);

Re: [U-Boot] [PATCH v2 2/9] sunxi: initial sun7i pinmux and gpio support

2014-03-26 Thread Marek Vasut
On Wednesday, March 26, 2014 at 10:39:16 AM, Ian Campbell wrote: On Wed, 2014-03-26 at 10:03 +0100, Wolfgang Denk wrote: Dear Ian Campbell, In message 1395822781.29683.12.ca...@dagon.hellion.org.uk you wrote: On Mon, 2014-03-24 at 21:54 +0100, Marek Vasut wrote: +int

Re: [U-Boot] [PATCH v2 2/9] sunxi: initial sun7i pinmux and gpio support

2014-03-26 Thread Wolfgang Denk
Dear Ian Campbell, In message 1395826756.22808.13.ca...@kazak.uk.xensource.com you wrote: Please add a comment to explain that. Unless you object I think I'll do as Marek suggested name the function sunxi_name_to_gpio and make the #define to that, it seems more consistent that way.

Re: [U-Boot] [PATCH v2 2/9] sunxi: initial sun7i pinmux and gpio support

2014-03-24 Thread Marek Vasut
On Friday, March 21, 2014 at 10:54:19 PM, Ian Campbell wrote: [...] diff --git a/arch/arm/cpu/armv7/sunxi/pinmux.c b/arch/arm/cpu/armv7/sunxi/pinmux.c new file mode 100644 index 000..8f5cbfe --- /dev/null +++ b/arch/arm/cpu/armv7/sunxi/pinmux.c @@ -0,0 +1,80 @@ +/* + * (C) Copyright

[U-Boot] [PATCH v2 2/9] sunxi: initial sun7i pinmux and gpio support

2014-03-21 Thread Ian Campbell
This has been stripped back for mainlining and supports only sun7i. These changes are not useful by themselves but are split out to make the patch sizes more manageable. As well as the following signed-off-by the sunxi branch shows commits to these files authored by the following: Carl van