From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
To: Andrea della Porta <andrea.porta@suse.com>,
Ulf Hansson <ulf.hansson@linaro.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Florian Fainelli <florian.fainelli@broadcom.com>,
Broadcom internal kernel review list
<bcm-kernel-feedback-list@broadcom.com>,
Linus Walleij <linus.walleij@linaro.org>,
Adrian Hunter <adrian.hunter@intel.com>,
Kamal Dasu <kamal.dasu@broadcom.com>,
Al Cooper <alcooperx@gmail.com>,
linux-mmc@vger.kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org,
Jonathan Bell <jonathan@raspberrypi.com>,
Phil Elwell <phil@raspberrypi.com>
Subject: Re: [PATCH 4/6] pinctrl: bcm: Add pinconf/pinmux controller driver for BCM2712
Date: Sun, 14 Apr 2024 09:19:46 +0200 [thread overview]
Message-ID: <66b11910-c6e2-401c-a293-441f6d85bb90@wanadoo.fr> (raw)
In-Reply-To: <8fb5dde9404875777587c867e7bdb4f691ab83f2.1713036964.git.andrea.porta@suse.com>
Le 14/04/2024 à 00:14, Andrea della Porta a écrit :
> Add a pincontrol driver for BCM2712. BCM2712 allows muxing GPIOs
> and setting configuration on pads.
>
> Originally-by: Jonathan Bell <jonathan@raspberrypi.com>
> Originally-by: Phil Elwell <phil@raspberrypi.com>
> Signed-off-by: Andrea della Porta <andrea.porta@suse.com>
> ---
> drivers/pinctrl/bcm/Kconfig | 9 +
> drivers/pinctrl/bcm/Makefile | 1 +
> drivers/pinctrl/bcm/pinctrl-bcm2712.c | 1247 +++++++++++++++++++++++++
> 3 files changed, 1257 insertions(+)
> create mode 100644 drivers/pinctrl/bcm/pinctrl-bcm2712.c
...
> +static int bcm2712_pmx_get_function_groups(struct pinctrl_dev *pctldev,
> + unsigned selector,
> + const char * const **groups,
> + unsigned * const num_groups)
> +{
> + struct bcm2712_pinctrl *pc = pinctrl_dev_get_drvdata(pctldev);
Missing empty new line.
> + /* every pin can do every function */
> + *groups = pc->gpio_groups;
> + *num_groups = pc->pctl_desc.npins;
> +
> + return 0;
> +}
...
> +static int bcm2712_pinconf_get(struct pinctrl_dev *pctldev,
> + unsigned pin, unsigned long *config)
> +{
> + struct bcm2712_pinctrl *pc = pinctrl_dev_get_drvdata(pctldev);
> + enum pin_config_param param = pinconf_to_config_param(*config);
> + u32 arg;
> +
> + switch (param) {
> + case PIN_CONFIG_BIAS_DISABLE:
> + arg = (bcm2712_pull_config_get(pc, pin) == BCM2712_PULL_NONE);
> + break;
> + case PIN_CONFIG_BIAS_PULL_DOWN:
> + arg = (bcm2712_pull_config_get(pc, pin) == BCM2712_PULL_DOWN);
> + break;
> + case PIN_CONFIG_BIAS_PULL_UP:
> + arg = (bcm2712_pull_config_get(pc, pin) == BCM2712_PULL_UP);
> + break;
> + default:
> + return -ENOTSUPP;
> + }
> +
> + *config = pinconf_to_config_packed(param, arg);
> +
> + return -ENOTSUPP;
Strange.
return 0;
?
> +}
> +
> +static int bcm2712_pinconf_set(struct pinctrl_dev *pctldev,
> + unsigned int pin, unsigned long *configs,
> + unsigned int num_configs)
> +{
> + struct bcm2712_pinctrl *pc = pinctrl_dev_get_drvdata(pctldev);
> + u32 param, arg;
> + int i;
> +
> + for (i = 0; i < num_configs; i++) {
> + param = pinconf_to_config_param(configs[i]);
> + arg = pinconf_to_config_argument(configs[i]);
> +
> + switch (param) {
> + case PIN_CONFIG_BIAS_DISABLE:
> + bcm2712_pull_config_set(pc, pin, BCM2712_PULL_NONE);
> + break;
> + case PIN_CONFIG_BIAS_PULL_DOWN:
> + bcm2712_pull_config_set(pc, pin, BCM2712_PULL_DOWN);
> + break;
> + case PIN_CONFIG_BIAS_PULL_UP:
> + bcm2712_pull_config_set(pc, pin, BCM2712_PULL_UP);
> + break;
> + default:
> + return -ENOTSUPP;
> + }
> + } /* for each config */
This comment is not really usefull, IMHO.
> +
> + return 0;
> +}
...
> +static int bcm2712_pinctrl_probe(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + //struct device_node *np = dev->of_node;
> + const struct bcm_plat_data *pdata;
> + //const struct of_device_id *match;
> + struct bcm2712_pinctrl *pc;
> + const char **names;
> + int num_pins, i;
> +
> + pdata = device_get_match_data(&pdev->dev);
> + if (!pdata)
> + return -EINVAL;
> +
> + pc = devm_kzalloc(dev, sizeof(*pc), GFP_KERNEL);
> + if (!pc)
> + return -ENOMEM;
> +
> + platform_set_drvdata(pdev, pc);
> + pc->dev = dev;
> + spin_lock_init(&pc->lock);
> +
> + //pc->base = devm_of_iomap(dev, np, 0, NULL);
Any use for this commented code? (and variable declarations above)
CJ
> + pc->base = devm_platform_ioremap_resource(pdev, 0);
> + if (WARN_ON(IS_ERR(pc->base))) {
> + //dev_err(dev, "could not get IO memory\n");
> + return PTR_ERR(pc->base);
> + }
> +
> + pc->pctl_desc = *pdata->pctl_desc;
> + num_pins = pc->pctl_desc.npins;
> + names = devm_kmalloc_array(dev, num_pins, sizeof(const char *),
> + GFP_KERNEL);
> + if (!names)
> + return -ENOMEM;
> + for (i = 0; i < num_pins; i++)
> + names[i] = pc->pctl_desc.pins[i].name;
> + pc->gpio_groups = names;
> + pc->pin_regs = pdata->pin_regs;
> + pc->pin_funcs = pdata->pin_funcs;
> + pc->pctl_dev = devm_pinctrl_register(dev, &pc->pctl_desc, pc);
> + if (IS_ERR(pc->pctl_dev))
> + return PTR_ERR(pc->pctl_dev);
> +
> + pc->gpio_range = *pdata->gpio_range;
> + pinctrl_add_gpio_range(pc->pctl_dev, &pc->gpio_range);
> +
> + return 0;
> +}
...
next prev parent reply other threads:[~2024-04-14 7:21 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-13 22:14 [PATCH 0/6] Add support for BCM2712 SD card controller Andrea della Porta
2024-04-13 22:14 ` [PATCH 1/6] dt-bindings: pinctrl: Add support for BCM2712 pin controller Andrea della Porta
2024-04-13 23:22 ` Rob Herring
2024-04-14 6:09 ` Krzysztof Kozlowski
2024-04-14 15:45 ` Florian Fainelli
2024-04-16 12:59 ` Linus Walleij
2024-04-27 10:55 ` Andrea della Porta
2024-04-13 22:14 ` [PATCH 2/6] dt-bindings: mmc: Add support for BCM2712 SD host controller Andrea della Porta
2024-04-13 23:22 ` Rob Herring
2024-04-14 6:11 ` Krzysztof Kozlowski
2024-04-14 15:55 ` Florian Fainelli
2024-04-13 22:14 ` [PATCH 3/6] arm64: dts: broadcom: Add support for BCM2712 Andrea della Porta
2024-04-14 6:22 ` Krzysztof Kozlowski
2024-04-14 16:01 ` Florian Fainelli
2024-04-27 11:02 ` Andrea della Porta
2024-04-15 8:20 ` Stefan Wahren
2024-04-15 8:52 ` Phil Elwell
2024-04-15 9:06 ` Stefan Wahren
2024-04-15 10:43 ` Phil Elwell
2024-04-13 22:14 ` [PATCH 4/6] pinctrl: bcm: Add pinconf/pinmux controller driver " Andrea della Porta
2024-04-14 7:19 ` Christophe JAILLET [this message]
2024-04-27 11:04 ` Andrea della Porta
2024-04-14 16:00 ` Florian Fainelli
2024-04-27 11:06 ` Andrea della Porta
2024-04-16 13:07 ` Linus Walleij
2024-04-27 11:13 ` Andrea della Porta
2024-04-13 22:14 ` [PATCH 5/6] mmc: sdhci-brcmstb: Add BCM2712 support Andrea della Porta
2024-04-14 6:25 ` Krzysztof Kozlowski
2024-04-14 7:28 ` Christophe JAILLET
2024-04-14 15:53 ` Florian Fainelli
2024-04-13 22:14 ` [PATCH 6/6] mmc: sdhci-brcmstb: Add BCM2712 SD Express support Andrea della Porta
2024-04-14 7:34 ` Christophe JAILLET
2024-04-27 11:16 ` Andrea della Porta
2024-04-14 15:55 ` Florian Fainelli
2024-04-27 11:21 ` Andrea della Porta
2024-04-14 10:07 ` [PATCH 0/6] Add support for BCM2712 SD card controller Stefan Wahren
2024-05-02 9:12 ` Andrea della Porta
2024-04-14 15:54 ` Florian Fainelli
2024-04-15 18:47 ` Rob Herring
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