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author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-10 11:58:25 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-11-10 11:58:25 -0800 |
commit | d55fc37856244c929965c190c8e9dcb49e2c07aa (patch) | |
tree | ccb348340a6f0aac546b06487ea6a1d1d35490f6 /drivers/i2c/busses/i2c-designware-platdrv.c | |
parent | 42d4ebb42a17754d2e8344dc1aa486119671d0eb (diff) | |
parent | 75ecc64ef5a1f310fc80f732ad8cfb7e1bdc59d5 (diff) | |
download | op-kernel-dev-d55fc37856244c929965c190c8e9dcb49e2c07aa.zip op-kernel-dev-d55fc37856244c929965c190c8e9dcb49e2c07aa.tar.gz |
Merge branch 'i2c/for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang:
- New drivers: UniPhier (with and without FIFO)
- some drivers got some bigger rework: ismt, designware, img-scb (rcar
had to be reverted because issues were showing up just lately)
- ACPI: reworked the device scanning and added support for muxes
... and quite a lot of driver bugfixes and cleanups this time. All
files touched outside of the i2c realm have proper acks.
* 'i2c/for-4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (70 commits)
i2c: rcar: Revert the latest refactoring series
i2c: pnx: remove superfluous assignment
MAINTAINERS: i2c: drop i2c-pnx maintainer
MAINTAINERS: i2c: mark also subdirectories as maintained
i2c: cadence: enable driver for ARM64
i2c: i801: Document Intel DNV and Broxton
i2c: at91: manage unexpected RXRDY flag when starting a transfer
i2c: pnx: Use setup_timer instead of open coding it
i2c: add ACPI support for I2C mux ports
acpi: add acpi_preset_companion() stub
i2c: pxa: Add support for pxa910/988 & new configuration features
i2c: au1550: Convert to devm_kzalloc and devm_ioremap_resource
i2c-dev: Fix I2C_SLAVE ioctl comment
i2c-dev: Fix typo in ioctl name reference
i2c: sirf: tune the divider to make i2c bus freq more accurate
i2c: imx: Use -ENXIO as error in the NACK case
i2c: i801: Add support for Intel Broxton
i2c: i801: Add support for Intel DNV
i2c: mediatek: add i2c resume support
i2c: imx: implement bus recovery
...
Diffstat (limited to 'drivers/i2c/busses/i2c-designware-platdrv.c')
-rw-r--r-- | drivers/i2c/busses/i2c-designware-platdrv.c | 81 |
1 files changed, 17 insertions, 64 deletions
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c index 472b882..809579e 100644 --- a/drivers/i2c/busses/i2c-designware-platdrv.c +++ b/drivers/i2c/busses/i2c-designware-platdrv.c @@ -42,10 +42,6 @@ #include <linux/platform_data/i2c-designware.h> #include "i2c-designware-core.h" -static struct i2c_algorithm i2c_dw_algo = { - .master_xfer = i2c_dw_xfer, - .functionality = i2c_dw_func, -}; static u32 i2c_dw_get_clk_rate_khz(struct dw_i2c_dev *dev) { return clk_get_rate(dev->clk)/1000; @@ -97,7 +93,6 @@ static void dw_i2c_acpi_params(struct platform_device *pdev, char method[], static int dw_i2c_acpi_configure(struct platform_device *pdev) { struct dw_i2c_dev *dev = platform_get_drvdata(pdev); - const struct acpi_device_id *id; dev->adapter.nr = -1; dev->tx_fifo_depth = 32; @@ -111,29 +106,9 @@ static int dw_i2c_acpi_configure(struct platform_device *pdev) dw_i2c_acpi_params(pdev, "FMCN", &dev->fs_hcnt, &dev->fs_lcnt, &dev->sda_hold_time); - /* - * Provide a way for Designware I2C host controllers that are not - * based on Intel LPSS to specify their input clock frequency via - * id->driver_data. - */ - id = acpi_match_device(pdev->dev.driver->acpi_match_table, &pdev->dev); - if (id && id->driver_data) - clk_register_fixed_rate(&pdev->dev, dev_name(&pdev->dev), NULL, - CLK_IS_ROOT, id->driver_data); - return 0; } -static void dw_i2c_acpi_unconfigure(struct platform_device *pdev) -{ - struct dw_i2c_dev *dev = platform_get_drvdata(pdev); - const struct acpi_device_id *id; - - id = acpi_match_device(pdev->dev.driver->acpi_match_table, &pdev->dev); - if (id && id->driver_data) - clk_unregister(dev->clk); -} - static const struct acpi_device_id dw_i2c_acpi_match[] = { { "INT33C2", 0 }, { "INT33C3", 0 }, @@ -141,7 +116,7 @@ static const struct acpi_device_id dw_i2c_acpi_match[] = { { "INT3433", 0 }, { "80860F41", 0 }, { "808622C1", 0 }, - { "AMD0010", 133 * 1000 * 1000 }, + { "AMD0010", 0 }, { } }; MODULE_DEVICE_TABLE(acpi, dw_i2c_acpi_match); @@ -150,10 +125,9 @@ static inline int dw_i2c_acpi_configure(struct platform_device *pdev) { return -ENODEV; } -static inline void dw_i2c_acpi_unconfigure(struct platform_device *pdev) { } #endif -static int dw_i2c_probe(struct platform_device *pdev) +static int dw_i2c_plat_probe(struct platform_device *pdev) { struct dw_i2c_dev *dev; struct i2c_adapter *adap; @@ -175,8 +149,6 @@ static int dw_i2c_probe(struct platform_device *pdev) if (IS_ERR(dev->base)) return PTR_ERR(dev->base); - init_completion(&dev->cmd_complete); - mutex_init(&dev->lock); dev->dev = &pdev->dev; dev->irq = irq; platform_set_drvdata(pdev, dev); @@ -251,26 +223,11 @@ static int dw_i2c_probe(struct platform_device *pdev) dev->rx_fifo_depth = ((param1 >> 8) & 0xff) + 1; dev->adapter.nr = pdev->id; } - r = i2c_dw_init(dev); - if (r) - return r; - - i2c_dw_disable_int(dev); - r = devm_request_irq(&pdev->dev, dev->irq, i2c_dw_isr, IRQF_SHARED, - pdev->name, dev); - if (r) { - dev_err(&pdev->dev, "failure requesting irq %i\n", dev->irq); - return r; - } adap = &dev->adapter; - i2c_set_adapdata(adap, dev); adap->owner = THIS_MODULE; adap->class = I2C_CLASS_DEPRECATED; - strlcpy(adap->name, "Synopsys DesignWare I2C adapter", - sizeof(adap->name)); - adap->algo = &i2c_dw_algo; - adap->dev.parent = &pdev->dev; + ACPI_COMPANION_SET(&adap->dev, ACPI_COMPANION(&pdev->dev)); adap->dev.of_node = pdev->dev.of_node; if (dev->pm_runtime_disabled) { @@ -282,9 +239,8 @@ static int dw_i2c_probe(struct platform_device *pdev) pm_runtime_enable(&pdev->dev); } - r = i2c_add_numbered_adapter(adap); + r = i2c_dw_probe(dev); if (r) { - dev_err(&pdev->dev, "failure adding adapter\n"); pm_runtime_disable(&pdev->dev); return r; } @@ -292,7 +248,7 @@ static int dw_i2c_probe(struct platform_device *pdev) return 0; } -static int dw_i2c_remove(struct platform_device *pdev) +static int dw_i2c_plat_remove(struct platform_device *pdev) { struct dw_i2c_dev *dev = platform_get_drvdata(pdev); @@ -306,9 +262,6 @@ static int dw_i2c_remove(struct platform_device *pdev) pm_runtime_put_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); - if (has_acpi_companion(&pdev->dev)) - dw_i2c_acpi_unconfigure(pdev); - return 0; } @@ -321,23 +274,23 @@ MODULE_DEVICE_TABLE(of, dw_i2c_of_match); #endif #ifdef CONFIG_PM_SLEEP -static int dw_i2c_prepare(struct device *dev) +static int dw_i2c_plat_prepare(struct device *dev) { return pm_runtime_suspended(dev); } -static void dw_i2c_complete(struct device *dev) +static void dw_i2c_plat_complete(struct device *dev) { if (dev->power.direct_complete) pm_request_resume(dev); } #else -#define dw_i2c_prepare NULL -#define dw_i2c_complete NULL +#define dw_i2c_plat_prepare NULL +#define dw_i2c_plat_complete NULL #endif #ifdef CONFIG_PM -static int dw_i2c_suspend(struct device *dev) +static int dw_i2c_plat_suspend(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct dw_i2c_dev *i_dev = platform_get_drvdata(pdev); @@ -348,7 +301,7 @@ static int dw_i2c_suspend(struct device *dev) return 0; } -static int dw_i2c_resume(struct device *dev) +static int dw_i2c_plat_resume(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct dw_i2c_dev *i_dev = platform_get_drvdata(pdev); @@ -362,10 +315,10 @@ static int dw_i2c_resume(struct device *dev) } static const struct dev_pm_ops dw_i2c_dev_pm_ops = { - .prepare = dw_i2c_prepare, - .complete = dw_i2c_complete, - SET_SYSTEM_SLEEP_PM_OPS(dw_i2c_suspend, dw_i2c_resume) - SET_RUNTIME_PM_OPS(dw_i2c_suspend, dw_i2c_resume, NULL) + .prepare = dw_i2c_plat_prepare, + .complete = dw_i2c_plat_complete, + SET_SYSTEM_SLEEP_PM_OPS(dw_i2c_plat_suspend, dw_i2c_plat_resume) + SET_RUNTIME_PM_OPS(dw_i2c_plat_suspend, dw_i2c_plat_resume, NULL) }; #define DW_I2C_DEV_PMOPS (&dw_i2c_dev_pm_ops) @@ -377,8 +330,8 @@ static const struct dev_pm_ops dw_i2c_dev_pm_ops = { MODULE_ALIAS("platform:i2c_designware"); static struct platform_driver dw_i2c_driver = { - .probe = dw_i2c_probe, - .remove = dw_i2c_remove, + .probe = dw_i2c_plat_probe, + .remove = dw_i2c_plat_remove, .driver = { .name = "i2c_designware", .of_match_table = of_match_ptr(dw_i2c_of_match), |