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Date:	Sun, 2 Nov 2014 09:22:16 -0800
From:	Sören Brinkmann <soren.brinkmann@...inx.com>
To:	Lothar Waßmann <LW@...O-electronics.de>
CC:	Linus Walleij <linus.walleij@...aro.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	Steffen Trumtrar <s.trumtrar@...gutronix.de>,
	Michal Simek <michal.simek@...inx.com>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH RFC v2 1/8] pinctrl: Add driver for Zynq

On Thu, 2014-10-30 at 09:16AM +0100, Lothar Waßmann wrote:
> Hi,
> 
> Sören Brinkmann wrote:
> > On Wed, 2014-10-29 at 05:49AM +0100, Lothar Waßmann wrote:
> > > Hi,
> > > 
> > > Sören Brinkmann wrote:
> > > > On Tue, 2014-10-28 at 04:16PM +0100, Lothar Waßmann wrote:
> > > > > Hi,
> > > > > 
> > > > > Soren Brinkmann wrote:
> > > > > > Signed-off-by: Soren Brinkmann <soren.brinkmann@...inx.com>
> > > > > > ---
> > > > > > changes since RFC:
> > > > > >  - use syscon/regmap to access registers in SLCR space
> > > > > >  - add pinctrl to zc702 DT
> > > > > >  - rebase to 3.18: rename enable -> set_mux
> > > > > >  - add kernel-doc
> > > > > >  - support pinconf
> > > > > >    - supported attributes
> > > > > >      - pin-bias: pull up, tristate, disable
> > > > > >      - slew-rate: 0 == slow, 1 == fast; generic pinconf does not display
> > > > > >        argument
> > > > > > 
> > > > > [...]
> > > > > > +struct zynq_pctrl_group zynq_pctrl_groups[] = {
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(ethernet0_0),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(ethernet1_0),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(mdio0_0),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(mdio1_0),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(qspi0_0),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(qspi1_0),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(qspi_fbclk),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(qspi_cs1),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(spi0_0),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(spi0_1),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(spi0_2),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(spi1_0),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(spi1_1),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(spi1_2),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(spi1_3),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(sdio0_0),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(sdio0_1),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(sdio0_2),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(sdio1_0),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(sdio1_1),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(sdio1_2),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(sdio1_3),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(sdio0_emio_wp),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(sdio0_emio_cd),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(sdio1_emio_wp),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(sdio1_emio_cd),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(smc0_nor),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(smc0_nor_cs1),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(smc0_nor_addr25),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(smc0_nand),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(can0_0),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(can0_1),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(can0_2),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(can0_3),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(can0_4),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(can0_5),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(can0_6),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(can0_7),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(can0_8),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(can0_9),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(can0_10),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(can1_0),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(can1_1),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(can1_2),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(can1_3),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(can1_4),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(can1_5),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(can1_6),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(can1_7),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(can1_8),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(can1_9),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(can1_10),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(can1_11),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(uart0_0),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(uart0_1),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(uart0_2),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(uart0_3),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(uart0_4),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(uart0_5),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(uart0_6),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(uart0_7),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(uart0_8),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(uart0_9),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(uart0_10),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(uart1_0),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(uart1_1),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(uart1_2),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(uart1_3),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(uart1_4),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(uart1_5),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(uart1_6),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(uart1_7),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(uart1_8),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(uart1_9),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(uart1_10),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(uart1_11),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(i2c0_0),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(i2c0_1),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(i2c0_2),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(i2c0_3),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(i2c0_4),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(i2c0_5),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(i2c0_6),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(i2c0_7),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(i2c0_8),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(i2c0_9),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(i2c0_10),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(i2c1_0),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(i2c1_1),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(i2c1_2),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(i2c1_3),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(i2c1_4),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(i2c1_5),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(i2c1_6),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(i2c1_7),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(i2c1_8),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(i2c1_9),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(i2c1_10),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(ttc0_0),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(ttc0_1),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(ttc0_2),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(ttc1_0),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(ttc1_1),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(ttc1_2),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(swdt0_0),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(swdt0_1),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(swdt0_2),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(swdt0_3),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(swdt0_4),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_0),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_1),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_2),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_3),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_4),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_5),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_6),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_7),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_8),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_9),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_10),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_11),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_12),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_13),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_14),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_15),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_16),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_17),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_18),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_19),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_20),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_21),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_22),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_23),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_24),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_25),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_26),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_27),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_28),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_29),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_30),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_31),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_32),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_33),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_34),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_35),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_36),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_37),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_38),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_39),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_40),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_41),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_42),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_43),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_44),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_45),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_46),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_47),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_48),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_49),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_50),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_51),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_52),
> > > > > > +	DEFINE_ZYNQ_PINCTRL_GRP(gpio0_53)
> > > > > dto.
> > > > > 
> > > > > [...]
> > > > > > +#define DEFINE_ZYNQ_PINMUX_FUNCTION(fname, mval)	\
> > > > > > +	[ZYNQ_PMUX_##fname] = {				\
> > > > > > +		.name = #fname,				\
> > > > > > +		.groups = fname##_groups,		\
> > > > > > +		.ngroups = ARRAY_SIZE(fname##_groups),	\
> > > > > > +		.mux_val = mval				\
> > > > > > +	}
> > > > > > +
> > > > > dto.
> > > > > 
> > > > > [...]
> > > > > > +#define DEFINE_ZYNQ_PINMUX_FUNCTION_MUX(fname, mval, mux, mask, shift)	\
> > > > > > +	[ZYNQ_PMUX_##fname] = {				\
> > > > > > +		.name = #fname,				\
> > > > > > +		.groups = fname##_groups,		\
> > > > > > +		.ngroups = ARRAY_SIZE(fname##_groups),	\
> > > > > > +		.mux_val = mval,			\
> > > > > > +		.mux_mask = mask,			\
> > > > > > +		.mux_shift = shift			\
> > > > > dto.
> > > > > 
> > > > > [...]
> > > > > > +static const struct zynq_pinmux_function zynq_pmux_functions[] = {
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(ethernet0, 1),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(ethernet1, 1),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(mdio0, 0x40),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(mdio1, 0x50),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(qspi0, 1),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(qspi1, 1),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(qspi_fbclk, 1),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(qspi_cs1, 1),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(spi0, 0x50),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(spi1, 0x50),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(sdio0, 0x40),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(sdio0_pc, 0xc),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION_MUX(sdio0_wp, 0, 130, ZYNQ_SDIO_WP_MASK,
> > > > > > +					ZYNQ_SDIO_WP_SHIFT),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION_MUX(sdio0_cd, 0, 130, ZYNQ_SDIO_CD_MASK,
> > > > > > +					ZYNQ_SDIO_CD_SHIFT),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(sdio1, 0x40),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(sdio1_pc, 0xc),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION_MUX(sdio1_wp, 0, 134, ZYNQ_SDIO_WP_MASK,
> > > > > > +					ZYNQ_SDIO_WP_SHIFT),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION_MUX(sdio1_cd, 0, 134, ZYNQ_SDIO_CD_MASK,
> > > > > > +					ZYNQ_SDIO_CD_SHIFT),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(smc0_nor, 4),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(smc0_nor_cs1, 8),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(smc0_nor_addr25, 4),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(smc0_nand, 8),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(can0, 0x10),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(can1, 0x10),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(uart0, 0x70),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(uart1, 0x70),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(i2c0, 0x20),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(i2c1, 0x20),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(ttc0, 0x60),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(ttc1, 0x60),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(swdt0, 0x30),
> > > > > > +	DEFINE_ZYNQ_PINMUX_FUNCTION(gpio0, 0)
> > > > > dto.
> > > > > 
> > > > > [...]
> > > > > > +static const struct pinctrl_ops zynq_pctrl_ops = {
> > > > > > +	.get_groups_count = zynq_pctrl_get_groups_count,
> > > > > > +	.get_group_name = zynq_pctrl_get_group_name,
> > > > > > +	.get_group_pins = zynq_pctrl_get_group_pins,
> > > > > > +	.dt_node_to_map = pinconf_generic_dt_node_to_map_group,
> > > > > > +	.dt_free_map = pinctrl_utils_dt_free_map
> > > > > dto.
> > > > 
> > > > Can we please use full sentences? But at least real words? I have no
> > > > idea what you're trying to tell me.
> > > > 
> > > Sorry, I must have accidentally removed my first comment which was:
> > > 'missing comma at end of initializer.'
> > 
> > Why should there be one? Neither gcc nor checkpatch seem to "miss" one.
> > 
> It helps further patching and avoiding possible conflicts because you
> don't need to modify an existing line when adding a new one at the end.

Guess that makes sense. I add some commas.

	Thanks,
	Sören
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