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Message-ID: <20240611061543.jivkvda6hhsyv4xu@dhruva>
Date: Tue, 11 Jun 2024 11:45:43 +0530
From: Dhruva Gole <d-gole@...com>
To: Andrew Davis <afd@...com>
CC: Sebastian Reichel <sre@...nel.org>,
Florian Fainelli
<florian.fainelli@...adcom.com>,
Broadcom internal kernel review list
<bcm-kernel-feedback-list@...adcom.com>,
<linux-pm@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/5] power: reset: brcmstb: Use
syscon_regmap_lookup_by_phandle_args() helper
Hi,
On Jun 10, 2024 at 09:28:34 -0500, Andrew Davis wrote:
> Simplify probe by fetching the regmap and its arguments in one call.
>
> Signed-off-by: Andrew Davis <afd@...com>
> ---
> drivers/power/reset/brcmstb-reboot.c | 22 ++++------------------
> 1 file changed, 4 insertions(+), 18 deletions(-)
>
> diff --git a/drivers/power/reset/brcmstb-reboot.c b/drivers/power/reset/brcmstb-reboot.c
> index db5b7120eadd0..94ea317f61ef4 100644
> --- a/drivers/power/reset/brcmstb-reboot.c
> +++ b/drivers/power/reset/brcmstb-reboot.c
> @@ -18,9 +18,6 @@
> #include <linux/smp.h>
> #include <linux/mfd/syscon.h>
>
> -#define RESET_SOURCE_ENABLE_REG 1
> -#define SW_MASTER_RESET_REG 2
> -
> static struct regmap *regmap;
> static u32 rst_src_en;
> static u32 sw_mstr_rst;
> @@ -87,6 +84,7 @@ static int brcmstb_reboot_probe(struct platform_device *pdev)
> {
> int rc;
> struct device_node *np = pdev->dev.of_node;
> + unsigned int args[2];
You can also call it syscon_args, but I'm fine either way.
>
> reset_masks = device_get_match_data(&pdev->dev);
> if (!reset_masks) {
> @@ -94,25 +92,13 @@ static int brcmstb_reboot_probe(struct platform_device *pdev)
> return -EINVAL;
> }
>
> - regmap = syscon_regmap_lookup_by_phandle(np, "syscon");
> + regmap = syscon_regmap_lookup_by_phandle_args(np, "syscon", 2, args);
> if (IS_ERR(regmap)) {
> pr_err("failed to get syscon phandle\n");
> return -EINVAL;
> }
> -
> - rc = of_property_read_u32_index(np, "syscon", RESET_SOURCE_ENABLE_REG,
> - &rst_src_en);
> - if (rc) {
> - pr_err("can't get rst_src_en offset (%d)\n", rc);
> - return -EINVAL;
> - }
> -
> - rc = of_property_read_u32_index(np, "syscon", SW_MASTER_RESET_REG,
> - &sw_mstr_rst);
> - if (rc) {
> - pr_err("can't get sw_mstr_rst offset (%d)\n", rc);
> - return -EINVAL;
> - }
> + rst_src_en = args[0];
> + sw_mstr_rst = args[1];
Reviewed-by: Dhruva Gole <d-gole@...com>
--
Best regards,
Dhruva
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