From c9913ac42135cf7f1c8986bcb175c5a7dda126e6 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Wed, 12 Jun 2019 15:26:49 +0100 Subject: [PATCH] i2c: qcom-geni: Provide support for ACPI Add a match table to allow automatic probing of ACPI device QCOM0220. Ignore clock attainment errors. Set default clock frequency value. Signed-off-by: Lee Jones Acked-by: Ard Biesheuvel Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-qcom-geni.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-qcom-geni.c b/drivers/i2c/busses/i2c-qcom-geni.c index eec13c72d644..a89bfce5388e 100644 --- a/drivers/i2c/busses/i2c-qcom-geni.c +++ b/drivers/i2c/busses/i2c-qcom-geni.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 // Copyright (c) 2017-2018, The Linux Foundation. All rights reserved. +#include #include #include #include @@ -483,6 +484,14 @@ static const struct i2c_algorithm geni_i2c_algo = { .functionality = geni_i2c_func, }; +#ifdef CONFIG_ACPI +static const struct acpi_device_id geni_i2c_acpi_match[] = { + { "QCOM0220"}, + { }, +}; +MODULE_DEVICE_TABLE(acpi, geni_i2c_acpi_match); +#endif + static int geni_i2c_probe(struct platform_device *pdev) { struct geni_i2c_dev *gi2c; @@ -502,7 +511,7 @@ static int geni_i2c_probe(struct platform_device *pdev) return PTR_ERR(gi2c->se.base); gi2c->se.clk = devm_clk_get(&pdev->dev, "se"); - if (IS_ERR(gi2c->se.clk)) { + if (IS_ERR(gi2c->se.clk) && !has_acpi_companion(&pdev->dev)) { ret = PTR_ERR(gi2c->se.clk); dev_err(&pdev->dev, "Err getting SE Core clk %d\n", ret); return ret; @@ -516,6 +525,9 @@ static int geni_i2c_probe(struct platform_device *pdev) gi2c->clk_freq_out = KHZ(100); } + if (has_acpi_companion(&pdev->dev)) + ACPI_COMPANION_SET(&gi2c->adap.dev, ACPI_COMPANION(&pdev->dev)); + gi2c->irq = platform_get_irq(pdev, 0); if (gi2c->irq < 0) { dev_err(&pdev->dev, "IRQ error for i2c-geni\n"); @@ -662,6 +674,7 @@ static struct platform_driver geni_i2c_driver = { .name = "geni_i2c", .pm = &geni_i2c_pm_ops, .of_match_table = geni_i2c_dt_match, + .acpi_match_table = ACPI_PTR(geni_i2c_acpi_match), }, };