From a71852147516bc1cb5b0b3cbd13639bfd4022dc8 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Fabian=20Silva=20Delgado?= Date: Thu, 29 Oct 2015 13:45:54 -0300 Subject: Linux-libre 4.2.5-gnu --- drivers/i2c/busses/i2c-designware-platdrv.c | 33 +++++++++++++++++++++++------ drivers/i2c/busses/i2c-rcar.c | 7 +++--- drivers/i2c/busses/i2c-s3c2410.c | 8 ++++--- 3 files changed, 36 insertions(+), 12 deletions(-) (limited to 'drivers/i2c/busses') diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c index 3dd2de31a..472b88285 100644 --- a/drivers/i2c/busses/i2c-designware-platdrv.c +++ b/drivers/i2c/busses/i2c-designware-platdrv.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include #include @@ -51,6 +52,22 @@ static u32 i2c_dw_get_clk_rate_khz(struct dw_i2c_dev *dev) } #ifdef CONFIG_ACPI +/* + * The HCNT/LCNT information coming from ACPI should be the most accurate + * for given platform. However, some systems get it wrong. On such systems + * we get better results by calculating those based on the input clock. + */ +static const struct dmi_system_id dw_i2c_no_acpi_params[] = { + { + .ident = "Dell Inspiron 7348", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7348"), + }, + }, + { } +}; + static void dw_i2c_acpi_params(struct platform_device *pdev, char method[], u16 *hcnt, u16 *lcnt, u32 *sda_hold) { @@ -58,6 +75,9 @@ static void dw_i2c_acpi_params(struct platform_device *pdev, char method[], acpi_handle handle = ACPI_HANDLE(&pdev->dev); union acpi_object *obj; + if (dmi_check_system(dw_i2c_no_acpi_params)) + return; + if (ACPI_FAILURE(acpi_evaluate_object(handle, method, NULL, &buf))) return; @@ -253,12 +273,6 @@ static int dw_i2c_probe(struct platform_device *pdev) adap->dev.parent = &pdev->dev; adap->dev.of_node = pdev->dev.of_node; - r = i2c_add_numbered_adapter(adap); - if (r) { - dev_err(&pdev->dev, "failure adding adapter\n"); - return r; - } - if (dev->pm_runtime_disabled) { pm_runtime_forbid(&pdev->dev); } else { @@ -268,6 +282,13 @@ static int dw_i2c_probe(struct platform_device *pdev) pm_runtime_enable(&pdev->dev); } + r = i2c_add_numbered_adapter(adap); + if (r) { + dev_err(&pdev->dev, "failure adding adapter\n"); + pm_runtime_disable(&pdev->dev); + return r; + } + return 0; } diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c index d8361dada..d8b5a8fee 100644 --- a/drivers/i2c/busses/i2c-rcar.c +++ b/drivers/i2c/busses/i2c-rcar.c @@ -690,15 +690,16 @@ static int rcar_i2c_probe(struct platform_device *pdev) return ret; } + pm_runtime_enable(dev); + platform_set_drvdata(pdev, priv); + ret = i2c_add_numbered_adapter(adap); if (ret < 0) { dev_err(dev, "reg adap failed: %d\n", ret); + pm_runtime_disable(dev); return ret; } - pm_runtime_enable(dev); - platform_set_drvdata(pdev, priv); - dev_info(dev, "probed\n"); return 0; diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c index 50bfd8cef..5df819610 100644 --- a/drivers/i2c/busses/i2c-s3c2410.c +++ b/drivers/i2c/busses/i2c-s3c2410.c @@ -1243,17 +1243,19 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev) i2c->adap.nr = i2c->pdata->bus_num; i2c->adap.dev.of_node = pdev->dev.of_node; + platform_set_drvdata(pdev, i2c); + + pm_runtime_enable(&pdev->dev); + ret = i2c_add_numbered_adapter(&i2c->adap); if (ret < 0) { dev_err(&pdev->dev, "failed to add bus to i2c core\n"); + pm_runtime_disable(&pdev->dev); s3c24xx_i2c_deregister_cpufreq(i2c); clk_unprepare(i2c->clk); return ret; } - platform_set_drvdata(pdev, i2c); - - pm_runtime_enable(&pdev->dev); pm_runtime_enable(&i2c->adap.dev); dev_info(&pdev->dev, "%s: S3C I2C adapter\n", dev_name(&i2c->adap.dev)); -- cgit v1.2.3