From: Lee Jones <lee.jones@linaro.org>
To: alokc@codeaurora.org, andy.gross@linaro.org,
david.brown@linaro.org, wsa+renesas@sang-engineering.com,
bjorn.andersson@linaro.org, linus.walleij@linaro.org,
balbi@kernel.org, gregkh@linuxfoundation.org
Cc: linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org,
linux-i2c@vger.kernel.org, jlhugo@gmail.com,
Lee Jones <lee.jones@linaro.org>,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 1/8] i2c: i2c-qcom-geni: Provide support for ACPI
Date: Fri, 7 Jun 2019 09:28:54 +0100 [thread overview]
Message-ID: <20190607082901.6491-1-lee.jones@linaro.org> (raw)
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 <lee.jones@linaro.org>
---
drivers/i2c/busses/i2c-qcom-geni.c | 19 +++++++++++++++++--
1 file changed, 17 insertions(+), 2 deletions(-)
diff --git a/drivers/i2c/busses/i2c-qcom-geni.c b/drivers/i2c/busses/i2c-qcom-geni.c
index db075bc0d952..0fa93b448e8d 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 <linux/acpi.h>
#include <linux/clk.h>
#include <linux/dma-mapping.h>
#include <linux/err.h>
@@ -483,6 +484,12 @@ static const struct i2c_algorithm geni_i2c_algo = {
.functionality = geni_i2c_func,
};
+static const struct acpi_device_id geni_i2c_acpi_match[] = {
+ { "QCOM0220"},
+ { },
+};
+MODULE_DEVICE_TABLE(acpi, geni_i2c_acpi_match);
+
static int geni_i2c_probe(struct platform_device *pdev)
{
struct geni_i2c_dev *gi2c;
@@ -502,7 +509,7 @@ 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) && !ACPI_HANDLE(&pdev->dev)) {
ret = PTR_ERR(gi2c->se.clk);
dev_err(&pdev->dev, "Err getting SE Core clk %d\n", ret);
return ret;
@@ -510,12 +517,19 @@ static int geni_i2c_probe(struct platform_device *pdev)
ret = device_property_read_u32(&pdev->dev, "clock-frequency",
&gi2c->clk_freq_out);
- if (ret) {
+ if (ret && !ACPI_HANDLE(&pdev->dev)) {
dev_info(&pdev->dev,
"Bus frequency not specified, default to 100kHz.\n");
gi2c->clk_freq_out = KHZ(100);
}
+ if (ACPI_HANDLE(&pdev->dev)) {
+ ACPI_COMPANION_SET(&gi2c->adap.dev, ACPI_COMPANION(&pdev->dev));
+
+ /* Using default, same as the !ACPI case above */
+ gi2c->clk_freq_out = KHZ(100);
+ }
+
gi2c->irq = platform_get_irq(pdev, 0);
if (gi2c->irq < 0) {
dev_err(&pdev->dev, "IRQ error for i2c-geni\n");
@@ -660,6 +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),
},
};
--
2.17.1
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next reply other threads:[~2019-06-07 8:29 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-07 8:28 Lee Jones [this message]
2019-06-07 8:28 ` [PATCH v2 2/8] i2c: i2c-qcom-geni: Signify successful driver probe Lee Jones
2019-06-07 11:08 ` Ard Biesheuvel
2019-06-07 8:28 ` [PATCH v2 3/8] pinctrl: msm: Add ability for drivers to supply a reserved GPIO list Lee Jones
2019-06-07 11:10 ` Ard Biesheuvel
2019-06-07 18:10 ` Bjorn Andersson
2019-06-08 14:22 ` Linus Walleij
2019-06-07 8:28 ` [PATCH v2 4/8] pinctrl: qcom: sdm845: Provide ACPI support Lee Jones
2019-06-07 11:12 ` Ard Biesheuvel
2019-06-07 8:28 ` [PATCH v2 5/8] soc: qcom: geni: Add support for ACPI Lee Jones
2019-06-07 11:14 ` Ard Biesheuvel
2019-06-07 8:28 ` [PATCH v2 6/8] usb: dwc3: qcom: Add support for booting with ACPI Lee Jones
2019-06-07 8:29 ` [PATCH v2 7/8] usb: dwc3: qcom: Start USB in 'host mode' on the SDM845 Lee Jones
2019-06-07 8:29 ` [PATCH v2 8/8] usb: dwc3: qcom: Improve error handling Lee Jones
2019-06-07 11:08 ` [PATCH v2 1/8] i2c: i2c-qcom-geni: Provide support for ACPI Ard Biesheuvel
2019-06-10 6:44 ` Lee Jones
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