From: Sam Protsenko <semen.protsenko@linaro.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Cc: Tomasz Figa <tomasz.figa@gmail.com>,
Sylwester Nawrocki <s.nawrocki@samsung.com>,
Linus Walleij <linus.walleij@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org, linux-gpio@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
Marek Szyprowski <m.szyprowski@samsung.com>,
Chanho Park <chanho61.park@samsung.com>,
Alim Akhtar <alim.akhtar@gmail.com>
Subject: Re: [PATCH v2 02/28] pinctrl: samsung: accept GPIO bank nodes with a suffix
Date: Fri, 14 Jan 2022 19:00:39 +0200 [thread overview]
Message-ID: <CAPLW+4=TMyytDPO0t4c0Kayy9HAAja6dVq9L8_ic3vf_1LpSRA@mail.gmail.com> (raw)
In-Reply-To: <20220111201426.326777-3-krzysztof.kozlowski@canonical.com>
On Tue, 11 Jan 2022 at 22:15, Krzysztof Kozlowski
<krzysztof.kozlowski@canonical.com> wrote:
>
> Existing dt-bindings expected that each GPIO/pin bank within pin
> controller has its own node with name matching the bank (e.g. gpa0,
> gpx2) and "gpio-controller" property. The node name is then used for
> matching between driver data and DTS.
>
> Newly introduced dtschema expects to have nodes ending with "-gpio-bank"
> suffix, so rewrite bank-devicetree matching to look for old and new
> style of naming.
>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
> ---
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
> drivers/pinctrl/samsung/pinctrl-samsung.c | 57 ++++++++++++++++++-----
> 1 file changed, 45 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.c b/drivers/pinctrl/samsung/pinctrl-samsung.c
> index b19ebc43d886..b3a5bc473841 100644
> --- a/drivers/pinctrl/samsung/pinctrl-samsung.c
> +++ b/drivers/pinctrl/samsung/pinctrl-samsung.c
> @@ -1012,13 +1012,56 @@ static void samsung_banks_of_node_put(struct samsung_pinctrl_drv_data *d)
> of_node_put(bank->of_node);
> }
>
> +/*
> + * Iterate over all driver pin banks to find one matching the name of node,
> + * skipping optional "-gpio" node suffix. When found, assign node to the bank.
> + */
> +static void samsung_banks_of_node_get(struct device *dev,
> + struct samsung_pinctrl_drv_data *d,
> + struct device_node *node)
> +{
> + const char *suffix = "-gpio-bank";
> + struct samsung_pin_bank *bank;
> + struct device_node *child;
> + /* Pin bank names are up to 4 characters */
> + char node_name[20];
> + unsigned int i;
> + size_t len;
> +
> + bank = d->pin_banks;
> + for (i = 0; i < d->nr_banks; ++i, ++bank) {
> + strscpy(node_name, bank->name, sizeof(node_name));
> + len = strlcat(node_name, suffix, sizeof(node_name));
> + if (len >= sizeof(node_name)) {
> + dev_err(dev, "Too long pin bank name '%s', ignoring\n",
> + bank->name);
> + continue;
> + }
> +
> + for_each_child_of_node(node, child) {
> + if (!of_find_property(child, "gpio-controller", NULL))
> + continue;
> + if (of_node_name_eq(child, node_name))
> + break;
> + else if (of_node_name_eq(child, bank->name))
> + break;
> + }
> +
> + if (child)
> + bank->of_node = child;
> + else
> + dev_warn(dev, "Missing node for bank %s - invalid DTB\n",
> + bank->name);
> + /* child reference dropped in samsung_drop_banks_of_node() */
> + }
> +}
> +
> /* retrieve the soc specific data */
> static const struct samsung_pin_ctrl *
> samsung_pinctrl_get_soc_data(struct samsung_pinctrl_drv_data *d,
> struct platform_device *pdev)
> {
> struct device_node *node = pdev->dev.of_node;
> - struct device_node *np;
> const struct samsung_pin_bank_data *bdata;
> const struct samsung_pin_ctrl *ctrl;
> struct samsung_pin_bank *bank;
> @@ -1082,17 +1125,7 @@ samsung_pinctrl_get_soc_data(struct samsung_pinctrl_drv_data *d,
> */
> d->virt_base = virt_base[0];
>
> - for_each_child_of_node(node, np) {
> - if (!of_find_property(np, "gpio-controller", NULL))
> - continue;
> - bank = d->pin_banks;
> - for (i = 0; i < d->nr_banks; ++i, ++bank) {
> - if (of_node_name_eq(np, bank->name)) {
> - bank->of_node = np;
> - break;
> - }
> - }
> - }
> + samsung_banks_of_node_get(&pdev->dev, d, node);
>
> d->pin_base = pin_base;
> pin_base += d->nr_pins;
> --
> 2.32.0
>
next prev parent reply other threads:[~2022-01-14 17:00 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-11 20:13 [PATCH v2 00/28] pinctrl: dt-bindings: samsung: convert to dtschema Krzysztof Kozlowski
2022-01-11 20:13 ` [PATCH v2 01/28] pinctrl: samsung: drop pin banks references on error paths Krzysztof Kozlowski
2022-01-12 5:28 ` Chanho Park
2022-01-14 16:38 ` Sam Protsenko
2022-01-11 20:14 ` [PATCH v2 02/28] pinctrl: samsung: accept GPIO bank nodes with a suffix Krzysztof Kozlowski
2022-01-14 17:00 ` Sam Protsenko [this message]
2022-01-11 20:14 ` [PATCH v2 03/28] ARM: dts: exynos: drop unused pinctrl defines in Exynos3250 Krzysztof Kozlowski
2022-01-11 20:14 ` [PATCH v2 04/28] ARM: dts: exynos: simplify PMIC DVS pin configuration in Odroid XU Krzysztof Kozlowski
2022-01-11 20:14 ` [PATCH v2 05/28] ARM: dts: exynos: override pins by label in Peach Pit Krzysztof Kozlowski
2022-01-11 20:14 ` [PATCH v2 06/28] ARM: dts: exynos: simplify PMIC DVS pin configuration " Krzysztof Kozlowski
2022-01-11 20:17 ` [PATCH v2 07/28] ARM: dts: exynos: override pins by label in Peach Pi Krzysztof Kozlowski
2022-01-11 20:17 ` [PATCH v2 08/28] ARM: dts: exynos: simplify PMIC DVS pin configuration " Krzysztof Kozlowski
2022-01-11 20:17 ` [PATCH v2 09/28] ARM: dts: s3c64xx: drop unneeded pinctrl wake-up interrupt mapping Krzysztof Kozlowski
2022-01-11 20:17 ` [PATCH v2 10/28] ARM: dts: exynos: align pinctrl with dtschema in Exynos3250 Krzysztof Kozlowski
2022-01-11 20:17 ` [PATCH v2 11/28] ARM: dts: exynos: align pinctrl with dtschema in Exynos4210 Krzysztof Kozlowski
2022-01-11 20:17 ` [PATCH v2 12/28] ARM: dts: exynos: align pinctrl with dtschema in Exynos4412 Krzysztof Kozlowski
2022-01-11 20:17 ` [PATCH v2 13/28] ARM: dts: exynos: align pinctrl with dtschema in Exynos5250 Krzysztof Kozlowski
2022-01-11 20:17 ` [PATCH v2 14/28] ARM: dts: exynos: align pinctrl with dtschema in Exynos5260 Krzysztof Kozlowski
2022-01-11 20:17 ` [PATCH v2 15/28] ARM: dts: exynos: align pinctrl with dtschema in Exynos5410 Krzysztof Kozlowski
2022-01-11 20:17 ` [PATCH v2 16/28] ARM: dts: exynos: align pinctrl with dtschema in Exynos542x/5800 Krzysztof Kozlowski
2022-01-11 20:17 ` [PATCH v2 17/28] arm64: dts: exynos: align pinctrl with dtschema in Exynos5433 Krzysztof Kozlowski
2022-01-11 20:17 ` [PATCH v2 18/28] arm64: dts: exynos: align pinctrl with dtschema in Exynos7 Krzysztof Kozlowski
2022-01-16 15:34 ` Alim Akhtar
2022-01-11 20:17 ` [PATCH v2 19/28] arm64: dts: exynos: align pinctrl with dtschema in Exynos850 Krzysztof Kozlowski
2022-01-11 20:17 ` [PATCH v2 20/28] arm64: dts: exynos: align pinctrl with dtschema in ExynosAutov9 Krzysztof Kozlowski
2022-01-12 5:21 ` Chanho Park
2022-01-14 16:40 ` Sam Protsenko
2022-01-11 20:17 ` [PATCH v2 21/28] ARM: dts: s3c24xx: align pinctrl with dtschema Krzysztof Kozlowski
2022-01-11 20:17 ` [PATCH v2 22/28] ARM: dts: s3c64xx: " Krzysztof Kozlowski
2022-01-11 20:17 ` [PATCH v2 23/28] ARM: dts: s5pv210: " Krzysztof Kozlowski
2022-01-11 20:17 ` [PATCH v2 24/28] dt-bindings: pinctrl: samsung: convert to dtschema Krzysztof Kozlowski
2022-01-16 0:55 ` Linus Walleij
2022-01-16 17:10 ` Krzysztof Kozlowski
2022-01-16 21:38 ` Linus Walleij
2022-01-17 7:45 ` Krzysztof Kozlowski
2022-01-17 20:26 ` Olof Johansson
2022-01-18 7:52 ` Krzysztof Kozlowski
2022-01-11 20:17 ` [PATCH v2 25/28] dt-bindings: pinctrl: samsung: describe Exynos850 and ExynosAutov9 wake-ups Krzysztof Kozlowski
2022-01-12 2:26 ` Rob Herring
2022-01-14 19:44 ` Sam Protsenko
2022-01-11 20:17 ` [PATCH v2 26/28] pinctrl: samsung: add support for " Krzysztof Kozlowski
2022-01-12 5:21 ` Chanho Park
2022-01-14 16:39 ` Sam Protsenko
2022-01-11 20:17 ` [PATCH v2 27/28] arm64: dts: exynos: use dedicated wake-up pinctrl compatible in Exynos850 Krzysztof Kozlowski
2022-01-14 18:34 ` Sam Protsenko
2022-01-11 20:17 ` [PATCH v2 28/28] arm64: dts: exynos: use dedicated wake-up pinctrl compatible in ExynosAutov9 Krzysztof Kozlowski
2022-01-12 5:28 ` Chanho Park
2022-01-14 16:31 ` Sam Protsenko
2022-01-14 18:31 ` [PATCH v2 00/28] pinctrl: dt-bindings: samsung: convert to dtschema Sam Protsenko
2022-01-15 15:46 ` Krzysztof Kozlowski
2022-01-23 11:46 ` Krzysztof Kozlowski
2022-01-23 17:09 ` Krzysztof Kozlowski
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