From: Ben Hutchings <ben.hutchings@codethink.co.uk>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Ian Molton <ian@mnementh.co.uk>,
linux-mmc@vger.kernel.org, linux-sh@vger.kernel.org,
linux-gpio@vger.kernel.org, linux-kernel@lists.codethink.co.uk,
Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>,
Simon Horman <horms@verge.net.au>,
Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Subject: Re: [PATCH v4 2/8] pinctrl: sh-pfc: r8a7790: Implement voltage switching for SDHI
Date: Thu, 09 Jul 2015 13:34:34 +0100 [thread overview]
Message-ID: <1436445274.25102.0.camel@codethink.co.uk> (raw)
In-Reply-To: <1435879310.7541.2.camel@codethink.co.uk>
On Fri, 2015-07-03 at 00:21 +0100, Ben Hutchings wrote:
> On Wed, 2015-07-01 at 10:37 +0300, Laurent Pinchart wrote:
> [...]
> > > +#define PIN_IO_VOLTAGE(bank, _pin, _name, sfx) \
> > > + [RCAR_GP_PIN(bank, _pin)].configs = SH_PFC_PIN_CFG_IO_VOLTAGE
> > > +
> > > static const struct sh_pfc_pin pinmux_pins[] = {
> > > PINMUX_GPIO_GP_ALL(),
> > >
> > > - /* Pins not associated with a GPIO port */
> > > + /*
> > > + * All pins assigned to GPIO bank 3 can be used for SD interfaces
> > > + * in which case they support both 3.3V and 1.8V signalling.
> > > + */
> > > + PORT_GP_32(3, PIN_IO_VOLTAGE, unused),
> > > +
> > > + /* Pins not associated with a GPIO port, placed after all the GPIOs */
> > > + [RCAR_GP_PIN(5, 31) + 1] =
> >
> > I'm sorry but I still don't like this. gcc outputs a warning when overriding
> > an initializer if you enable -Wextra, which leads me to believe this construct
> > is dubious. It should at least be tested with LLVM.
> >
> > I'd much prefer replacing PINMUX_GPIO_GP_ALL() with a version that will
> > initialize the pins correctly right away.
> [...]
>
> Something like this?
Laurent, please can you answer whether this is the right way to go.
Ben.
> diff --git a/drivers/pinctrl/sh-pfc/pfc-emev2.c b/drivers/pinctrl/sh-pfc/pfc-emev2.c
> index 849c6943ed30..ad1a8281a91b 100644
> --- a/drivers/pinctrl/sh-pfc/pfc-emev2.c
> +++ b/drivers/pinctrl/sh-pfc/pfc-emev2.c
> @@ -228,7 +228,7 @@ enum {
>
> /* Expand to a list of sh_pfc_pin entries (named PORT#).
> * NOTE: No config are recorded since the driver do not handle pinconf. */
> -#define __PIN_CFG(pn, pfx, sfx) SH_PFC_PIN_CFG(pfx, 0)
> +#define __PIN_CFG(pn, pfx, sfx) SH_PFC_PORT_CFG(pfx, 0)
> #define PINMUX_EMEV_GPIO_ALL() CPU_ALL_PORT(__PIN_CFG, , unused)
>
> static const struct sh_pfc_pin pinmux_pins[] = {
> diff --git a/drivers/pinctrl/sh-pfc/pfc-r8a73a4.c b/drivers/pinctrl/sh-pfc/pfc-r8a73a4.c
> index 280a56f97786..ca1538371563 100644
> --- a/drivers/pinctrl/sh-pfc/pfc-r8a73a4.c
> +++ b/drivers/pinctrl/sh-pfc/pfc-r8a73a4.c
> @@ -1272,8 +1272,8 @@ static const u16 pinmux_data[] = {
> #define __IO (SH_PFC_PIN_CFG_INPUT | SH_PFC_PIN_CFG_OUTPUT)
> #define __PUD (SH_PFC_PIN_CFG_PULL_DOWN | SH_PFC_PIN_CFG_PULL_UP)
>
> -#define R8A73A4_PIN_IO_PU_PD(pin) SH_PFC_PIN_CFG(pin, __IO | __PUD)
> -#define R8A73A4_PIN_O(pin) SH_PFC_PIN_CFG(pin, __O)
> +#define R8A73A4_PIN_IO_PU_PD(pin) SH_PFC_PORT_CFG(pin, __IO | __PUD)
> +#define R8A73A4_PIN_O(pin) SH_PFC_PORT_CFG(pin, __O)
>
> static const struct sh_pfc_pin pinmux_pins[] = {
> R8A73A4_PIN_IO_PU_PD(0), R8A73A4_PIN_IO_PU_PD(1),
> diff --git a/drivers/pinctrl/sh-pfc/pfc-r8a7740.c b/drivers/pinctrl/sh-pfc/pfc-r8a7740.c
> index b486e9d20cc2..92939cbd7ad0 100644
> --- a/drivers/pinctrl/sh-pfc/pfc-r8a7740.c
> +++ b/drivers/pinctrl/sh-pfc/pfc-r8a7740.c
> @@ -1535,15 +1535,15 @@ static const u16 pinmux_data[] = {
> #define __PU (SH_PFC_PIN_CFG_PULL_UP)
> #define __PUD (SH_PFC_PIN_CFG_PULL_DOWN | SH_PFC_PIN_CFG_PULL_UP)
>
> -#define R8A7740_PIN_I_PD(pin) SH_PFC_PIN_CFG(pin, __I | __PD)
> -#define R8A7740_PIN_I_PU(pin) SH_PFC_PIN_CFG(pin, __I | __PU)
> -#define R8A7740_PIN_I_PU_PD(pin) SH_PFC_PIN_CFG(pin, __I | __PUD)
> -#define R8A7740_PIN_IO(pin) SH_PFC_PIN_CFG(pin, __IO)
> -#define R8A7740_PIN_IO_PD(pin) SH_PFC_PIN_CFG(pin, __IO | __PD)
> -#define R8A7740_PIN_IO_PU(pin) SH_PFC_PIN_CFG(pin, __IO | __PU)
> -#define R8A7740_PIN_IO_PU_PD(pin) SH_PFC_PIN_CFG(pin, __IO | __PUD)
> -#define R8A7740_PIN_O(pin) SH_PFC_PIN_CFG(pin, __O)
> -#define R8A7740_PIN_O_PU_PD(pin) SH_PFC_PIN_CFG(pin, __O | __PUD)
> +#define R8A7740_PIN_I_PD(pin) SH_PFC_PORT_CFG(pin, __I | __PD)
> +#define R8A7740_PIN_I_PU(pin) SH_PFC_PORT_CFG(pin, __I | __PU)
> +#define R8A7740_PIN_I_PU_PD(pin) SH_PFC_PORT_CFG(pin, __I | __PUD)
> +#define R8A7740_PIN_IO(pin) SH_PFC_PORT_CFG(pin, __IO)
> +#define R8A7740_PIN_IO_PD(pin) SH_PFC_PORT_CFG(pin, __IO | __PD)
> +#define R8A7740_PIN_IO_PU(pin) SH_PFC_PORT_CFG(pin, __IO | __PU)
> +#define R8A7740_PIN_IO_PU_PD(pin) SH_PFC_PORT_CFG(pin, __IO | __PUD)
> +#define R8A7740_PIN_O(pin) SH_PFC_PORT_CFG(pin, __O)
> +#define R8A7740_PIN_O_PU_PD(pin) SH_PFC_PORT_CFG(pin, __O | __PUD)
>
> static const struct sh_pfc_pin pinmux_pins[] = {
> /* Table 56-1 (I/O and Pull U/D) */
> diff --git a/drivers/pinctrl/sh-pfc/pfc-r8a7790.c b/drivers/pinctrl/sh-pfc/pfc-r8a7790.c
> index 1137bbc810cd..1e59e1775374 100644
> --- a/drivers/pinctrl/sh-pfc/pfc-r8a7790.c
> +++ b/drivers/pinctrl/sh-pfc/pfc-r8a7790.c
> @@ -1740,20 +1740,23 @@ static const u16 pinmux_data[] = {
> #define PIN_NUMBER(r, c) (((r) - 'A') * 31 + (c) + 200)
> #define PIN_A_NUMBER(r, c) PIN_NUMBER(ROW_GROUP_A(r), c)
>
> -#define PIN_IO_VOLTAGE(bank, _pin, _name, sfx) \
> - [RCAR_GP_PIN(bank, _pin)].configs = SH_PFC_PIN_CFG_IO_VOLTAGE
> +/*
> + * All pins assigned to GPIO bank 3 can be used for SD interfaces in
> + * which case they support both 3.3V and 1.8V signalling.
> + */
> +#define GP_GPIO_IO_VOLTAGE(bank, _pin, _name, sfx) \
> + [RCAR_GP_PIN(bank, _pin)] = \
> + SH_PFC_GPIO_CFG(bank, _pin, _name, SH_PFC_PIN_CFG_IO_VOLTAGE)
>
> static const struct sh_pfc_pin pinmux_pins[] = {
> - PINMUX_GPIO_GP_ALL(),
> -
> - /*
> - * All pins assigned to GPIO bank 3 can be used for SD interfaces
> - * in which case they support both 3.3V and 1.8V signalling.
> - */
> - PORT_GP_32(3, PIN_IO_VOLTAGE, unused),
> + PORT_GP_32(0, _GP_GPIO, unused),
> + PORT_GP_32(1, _GP_GPIO, unused),
> + PORT_GP_32(2, _GP_GPIO, unused),
> + PORT_GP_32(3, GP_GPIO_IO_VOLTAGE, unused),
> + PORT_GP_32(4, _GP_GPIO, unused),
> + PORT_GP_32(5, _GP_GPIO, unused),
>
> /* Pins not associated with a GPIO port, placed after all the GPIOs */
> - [RCAR_GP_PIN(5, 31) + 1] =
> SH_PFC_PIN_NAMED(ROW_GROUP_A('F'), 15, AF15),
> SH_PFC_PIN_NAMED(ROW_GROUP_A('G'), 15, AG15),
> SH_PFC_PIN_NAMED(ROW_GROUP_A('H'), 15, AH15),
> diff --git a/drivers/pinctrl/sh-pfc/pfc-sh73a0.c b/drivers/pinctrl/sh-pfc/pfc-sh73a0.c
> index d2efbfb776ac..2c798550cd8c 100644
> --- a/drivers/pinctrl/sh-pfc/pfc-sh73a0.c
> +++ b/drivers/pinctrl/sh-pfc/pfc-sh73a0.c
> @@ -1166,14 +1166,14 @@ static const u16 pinmux_data[] = {
> #define __PU (SH_PFC_PIN_CFG_PULL_UP)
> #define __PUD (SH_PFC_PIN_CFG_PULL_DOWN | SH_PFC_PIN_CFG_PULL_UP)
>
> -#define SH73A0_PIN_I_PD(pin) SH_PFC_PIN_CFG(pin, __I | __PD)
> -#define SH73A0_PIN_I_PU(pin) SH_PFC_PIN_CFG(pin, __I | __PU)
> -#define SH73A0_PIN_I_PU_PD(pin) SH_PFC_PIN_CFG(pin, __I | __PUD)
> -#define SH73A0_PIN_IO(pin) SH_PFC_PIN_CFG(pin, __IO)
> -#define SH73A0_PIN_IO_PD(pin) SH_PFC_PIN_CFG(pin, __IO | __PD)
> -#define SH73A0_PIN_IO_PU(pin) SH_PFC_PIN_CFG(pin, __IO | __PU)
> -#define SH73A0_PIN_IO_PU_PD(pin) SH_PFC_PIN_CFG(pin, __IO | __PUD)
> -#define SH73A0_PIN_O(pin) SH_PFC_PIN_CFG(pin, __O)
> +#define SH73A0_PIN_I_PD(pin) SH_PFC_PORT_CFG(pin, __I | __PD)
> +#define SH73A0_PIN_I_PU(pin) SH_PFC_PORT_CFG(pin, __I | __PU)
> +#define SH73A0_PIN_I_PU_PD(pin) SH_PFC_PORT_CFG(pin, __I | __PUD)
> +#define SH73A0_PIN_IO(pin) SH_PFC_PORT_CFG(pin, __IO)
> +#define SH73A0_PIN_IO_PD(pin) SH_PFC_PORT_CFG(pin, __IO | __PD)
> +#define SH73A0_PIN_IO_PU(pin) SH_PFC_PORT_CFG(pin, __IO | __PU)
> +#define SH73A0_PIN_IO_PU_PD(pin) SH_PFC_PORT_CFG(pin, __IO | __PUD)
> +#define SH73A0_PIN_O(pin) SH_PFC_PORT_CFG(pin, __O)
>
> /* Pin numbers for pins without a corresponding GPIO port number are computed
> * from the row and column numbers with a 1000 offset to avoid collisions with
> diff --git a/drivers/pinctrl/sh-pfc/sh_pfc.h b/drivers/pinctrl/sh-pfc/sh_pfc.h
> index 734f7a92229c..3eca740bba02 100644
> --- a/drivers/pinctrl/sh-pfc/sh_pfc.h
> +++ b/drivers/pinctrl/sh-pfc/sh_pfc.h
> @@ -272,14 +272,18 @@ struct sh_pfc_soc_info {
> .enum_id = _pin##_DATA, \
> }
>
> -/* SH_PFC_PIN_CFG - Expand to a sh_pfc_pin entry (named PORT#) with config */
> -#define SH_PFC_PIN_CFG(_pin, cfgs) \
> +/* SH_PFC_{PORT,GPIO}_CFG - Expand to a sh_pfc_pin entry with config */
> +#define _SH_PFC_PIN_CFG(_pin, _name, cfgs) \
> { \
> .pin = _pin, \
> - .name = __stringify(PORT##_pin), \
> - .enum_id = PORT##_pin##_DATA, \
> + .name = __stringify(_name), \
> + .enum_id = _name##_DATA, \
> .configs = cfgs, \
> }
> +#define SH_PFC_PORT_CFG(_pin, cfgs) \
> + _SH_PFC_PIN_CFG(PORT##_pin, PORT##_pin, cfgs)
> +#define SH_PFC_GPIO_CFG(bank, _pin, _name, cfgs) \
> + _SH_PFC_PIN_CFG((bank * 32) + _pin, _name, cfgs)
>
> /* SH_PFC_PIN_NAMED - Expand to a sh_pfc_pin entry with the given name */
> #define SH_PFC_PIN_NAMED(row, col, _name) \
> --- END ---
>
> If you're happy with that, I'll re-send the series (hopefully for the
> last time!) with the r8a7790 changes squashed into "pinctrl: sh-pfc:
> r8a7790: Implement voltage switching for SDHI" and the SH_PFC_PIN_CFG
> macro change as a new patch before it.
>
> Ben.
>
next prev parent reply other threads:[~2015-07-09 12:34 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-30 16:52 [PATCH v4 0/8] UHS-I support for sh_mobile_sdhi Ben Hutchings
2015-06-30 16:53 ` [PATCH v4 1/8] pinctrl: sh-pfc: Implement pinconf power-source param for voltage switching Ben Hutchings
2015-07-01 7:24 ` Laurent Pinchart
2015-08-24 8:45 ` Linus Walleij
2015-06-30 16:54 ` [PATCH v4 2/8] pinctrl: sh-pfc: r8a7790: Implement voltage switching for SDHI Ben Hutchings
2015-07-01 7:37 ` Laurent Pinchart
2015-07-02 23:21 ` Ben Hutchings
2015-07-09 12:34 ` Ben Hutchings [this message]
2015-11-13 8:38 ` Kuninori Morimoto
2016-02-03 9:59 ` Laurent Pinchart
2016-02-11 13:53 ` Wolfram Sang
2015-06-30 16:54 ` [PATCH v4 3/8] mmc: tmio, sh_mobile_sdhi: Pass tmio_mmc_host ptr to clk_{enable,disable} ops Ben Hutchings
2015-06-30 16:56 ` [PATCH v4 4/8] mmc: tmio, sh_mobile_sdhi: Add support for variable input clock frequency Ben Hutchings
2015-06-30 16:56 ` [PATCH v4 5/8] mmc: tmio: Add UHS-I mode support Ben Hutchings
2015-06-30 16:57 ` [PATCH v4 6/8] mmc: sh_mobile_sdhi: " Ben Hutchings
2015-06-30 16:57 ` [PATCH v4 7/8] ARM: shmobile: r8a7790: Set maximum frequencies for SDHI clocks Ben Hutchings
2015-07-07 0:39 ` Simon Horman
2015-07-07 1:19 ` Kuninori Morimoto
2015-07-08 1:25 ` Simon Horman
2015-07-07 1:19 ` Kuninori Morimoto
2015-06-30 16:57 ` [PATCH v4 8/8] ARM: shmobile: lager: Enable UHS-I SDR-50 Ben Hutchings
2015-07-01 0:28 ` [PATCH v4 0/8] UHS-I support for sh_mobile_sdhi Kuninori Morimoto
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