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[80.251.214.228]) by smtp.gmail.com with ESMTPSA id gz24sm7052956pjb.0.2021.07.04.00.41.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 04 Jul 2021 00:41:16 -0700 (PDT) From: Shawn Guo To: Sebastian Reichel Cc: Rob Herring , Vinod Koul , Bjorn Andersson , devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org, Shawn Guo Subject: [PATCH 3/3] power: reset: qcom-pon: Add support for 'qcom, mode-in-imem' Date: Sun, 4 Jul 2021 15:40:45 +0800 Message-Id: <20210704074045.21643-4-shawn.guo@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210704074045.21643-1-shawn.guo@linaro.org> References: <20210704074045.21643-1-shawn.guo@linaro.org> Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Add support for DT property 'qcom,mode-in-imem', which is used on devices like Sony Xperia M4 Aqua phone (MSM8939) to store a different set of mode values IMEM rather than PON register. Signed-off-by: Shawn Guo --- drivers/power/reset/qcom-pon.c | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) diff --git a/drivers/power/reset/qcom-pon.c b/drivers/power/reset/qcom-pon.c index 4a688741a88a..f63d49c72f55 100644 --- a/drivers/power/reset/qcom-pon.c +++ b/drivers/power/reset/qcom-pon.c @@ -42,6 +42,24 @@ static int pm8916_reboot_mode_write(struct reboot_mode_driver *reboot, return ret; } +static int pm8916_reboot_mode_write_imem(struct reboot_mode_driver *reboot, + unsigned int magic) +{ + struct pm8916_pon *pon = container_of(reboot, struct pm8916_pon, + reboot_mode); + void __iomem *imem; + + imem = devm_ioremap(pon->dev, pon->baseaddr, 4); + if (!imem) { + dev_err(pon->dev, "failed to map imem\n"); + return -ENOMEM; + } + + writel(magic, imem); + + return 0; +} + static int pm8916_pon_probe(struct platform_device *pdev) { struct pm8916_pon *pon; @@ -66,7 +84,12 @@ static int pm8916_pon_probe(struct platform_device *pdev) pon->reboot_mode.dev = &pdev->dev; pon->reason_shift = (long)of_device_get_match_data(&pdev->dev); - pon->reboot_mode.write = pm8916_reboot_mode_write; + + if (device_property_present(&pdev->dev, "qcom,mode-in-imem")) + pon->reboot_mode.write = pm8916_reboot_mode_write_imem; + else + pon->reboot_mode.write = pm8916_reboot_mode_write; + error = devm_reboot_mode_register(&pdev->dev, &pon->reboot_mode); if (error) { dev_err(&pdev->dev, "can't register reboot mode\n");