diff options
Diffstat (limited to 'drivers/i2c')
-rw-r--r-- | drivers/i2c/busses/Kconfig | 3 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-nomadik.c | 90 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-piix4.c | 3 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-stu300.c | 16 | ||||
-rw-r--r-- | drivers/i2c/i2c-core.c | 2 |
5 files changed, 28 insertions, 86 deletions
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig index 631736e..5275036 100644 --- a/drivers/i2c/busses/Kconfig +++ b/drivers/i2c/busses/Kconfig @@ -150,6 +150,7 @@ config I2C_PIIX4 ATI SB700/SP5100 ATI SB800 AMD Hudson-2 + AMD CZ Serverworks OSB4 Serverworks CSB5 Serverworks CSB6 @@ -685,7 +686,7 @@ config I2C_SIMTEC config I2C_SIRF tristate "CSR SiRFprimaII I2C interface" - depends on ARCH_PRIMA2 + depends on ARCH_SIRF help If you say yes to this option, support will be included for the CSR SiRFprimaII I2C interface. diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c index 650293f..c7e3b0c 100644 --- a/drivers/i2c/busses/i2c-nomadik.c +++ b/drivers/i2c/busses/i2c-nomadik.c @@ -148,10 +148,6 @@ struct i2c_nmk_client { * @stop: stop condition. * @xfer_complete: acknowledge completion for a I2C message. * @result: controller propogated result. - * @pinctrl: pinctrl handle. - * @pins_default: default state for the pins. - * @pins_idle: idle state for the pins. - * @pins_sleep: sleep state for the pins. * @busy: Busy doing transfer. */ struct nmk_i2c_dev { @@ -165,11 +161,6 @@ struct nmk_i2c_dev { int stop; struct completion xfer_complete; int result; - /* Three pin states - default, idle & sleep */ - struct pinctrl *pinctrl; - struct pinctrl_state *pins_default; - struct pinctrl_state *pins_idle; - struct pinctrl_state *pins_sleep; bool busy; }; @@ -645,13 +636,7 @@ static int nmk_i2c_xfer(struct i2c_adapter *i2c_adap, } /* Optionaly enable pins to be muxed in and configured */ - if (!IS_ERR(dev->pins_default)) { - status = pinctrl_select_state(dev->pinctrl, - dev->pins_default); - if (status) - dev_err(&dev->adev->dev, - "could not set default pins\n"); - } + pinctrl_pm_select_default_state(&dev->adev->dev); status = init_hw(dev); if (status) @@ -681,13 +666,7 @@ out: clk_disable_unprepare(dev->clk); out_clk: /* Optionally let pins go into idle state */ - if (!IS_ERR(dev->pins_idle)) { - status = pinctrl_select_state(dev->pinctrl, - dev->pins_idle); - if (status) - dev_err(&dev->adev->dev, - "could not set pins to idle state\n"); - } + pinctrl_pm_select_idle_state(&dev->adev->dev); pm_runtime_put_sync(&dev->adev->dev); @@ -882,41 +861,22 @@ static int nmk_i2c_suspend(struct device *dev) { struct amba_device *adev = to_amba_device(dev); struct nmk_i2c_dev *nmk_i2c = amba_get_drvdata(adev); - int ret; if (nmk_i2c->busy) return -EBUSY; - if (!IS_ERR(nmk_i2c->pins_sleep)) { - ret = pinctrl_select_state(nmk_i2c->pinctrl, - nmk_i2c->pins_sleep); - if (ret) - dev_err(dev, "could not set pins to sleep state\n"); - } + pinctrl_pm_select_sleep_state(dev); return 0; } static int nmk_i2c_resume(struct device *dev) { - struct amba_device *adev = to_amba_device(dev); - struct nmk_i2c_dev *nmk_i2c = amba_get_drvdata(adev); - int ret; - /* First go to the default state */ - if (!IS_ERR(nmk_i2c->pins_default)) { - ret = pinctrl_select_state(nmk_i2c->pinctrl, - nmk_i2c->pins_default); - if (ret) - dev_err(dev, "could not set pins to default state\n"); - } + pinctrl_pm_select_default_state(dev); /* Then let's idle the pins until the next transfer happens */ - if (!IS_ERR(nmk_i2c->pins_idle)) { - ret = pinctrl_select_state(nmk_i2c->pinctrl, - nmk_i2c->pins_idle); - if (ret) - dev_err(dev, "could not set pins to idle state\n"); - } + pinctrl_pm_select_idle_state(dev); + return 0; } #else @@ -1004,39 +964,10 @@ static int nmk_i2c_probe(struct amba_device *adev, const struct amba_id *id) dev->adev = adev; amba_set_drvdata(adev, dev); - dev->pinctrl = devm_pinctrl_get(&adev->dev); - if (IS_ERR(dev->pinctrl)) { - ret = PTR_ERR(dev->pinctrl); - goto err_pinctrl; - } - - dev->pins_default = pinctrl_lookup_state(dev->pinctrl, - PINCTRL_STATE_DEFAULT); - if (IS_ERR(dev->pins_default)) { - dev_err(&adev->dev, "could not get default pinstate\n"); - } else { - ret = pinctrl_select_state(dev->pinctrl, - dev->pins_default); - if (ret) - dev_dbg(&adev->dev, "could not set default pinstate\n"); - } - - dev->pins_idle = pinctrl_lookup_state(dev->pinctrl, - PINCTRL_STATE_IDLE); - if (IS_ERR(dev->pins_idle)) { - dev_dbg(&adev->dev, "could not get idle pinstate\n"); - } else { - /* If possible, let's go to idle until the first transfer */ - ret = pinctrl_select_state(dev->pinctrl, - dev->pins_idle); - if (ret) - dev_dbg(&adev->dev, "could not set idle pinstate\n"); - } - - dev->pins_sleep = pinctrl_lookup_state(dev->pinctrl, - PINCTRL_STATE_SLEEP); - if (IS_ERR(dev->pins_sleep)) - dev_dbg(&adev->dev, "could not get sleep pinstate\n"); + /* Select default pin state */ + pinctrl_pm_select_default_state(&adev->dev); + /* If possible, let's go to idle until the first transfer */ + pinctrl_pm_select_idle_state(&adev->dev); dev->virtbase = ioremap(adev->res.start, resource_size(&adev->res)); if (!dev->virtbase) { @@ -1106,7 +1037,6 @@ static int nmk_i2c_probe(struct amba_device *adev, const struct amba_id *id) iounmap(dev->virtbase); err_no_ioremap: kfree(dev); - err_pinctrl: err_no_mem: return ret; diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c index 39ab78c..d05ad59 100644 --- a/drivers/i2c/busses/i2c-piix4.c +++ b/drivers/i2c/busses/i2c-piix4.c @@ -22,7 +22,7 @@ Intel PIIX4, 440MX Serverworks OSB4, CSB5, CSB6, HT-1000, HT-1100 ATI IXP200, IXP300, IXP400, SB600, SB700/SP5100, SB800 - AMD Hudson-2 + AMD Hudson-2, CZ SMSC Victory66 Note: we assume there can only be one device, with one or more @@ -522,6 +522,7 @@ static DEFINE_PCI_DEVICE_TABLE(piix4_ids) = { { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP400_SMBUS) }, { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS) }, { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SMBUS) }, + { PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x790b) }, { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_OSB4) }, { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, diff --git a/drivers/i2c/busses/i2c-stu300.c b/drivers/i2c/busses/i2c-stu300.c index 0a6f941..d1a6b20 100644 --- a/drivers/i2c/busses/i2c-stu300.c +++ b/drivers/i2c/busses/i2c-stu300.c @@ -17,6 +17,7 @@ #include <linux/clk.h> #include <linux/io.h> #include <linux/slab.h> +#include <linux/of_i2c.h> /* the name of this kernel module */ #define NAME "stu300" @@ -867,7 +868,6 @@ stu300_probe(struct platform_device *pdev) struct resource *res; int bus_nr; int ret = 0; - char clk_name[] = "I2C0"; dev = devm_kzalloc(&pdev->dev, sizeof(struct stu300_dev), GFP_KERNEL); if (!dev) { @@ -876,8 +876,7 @@ stu300_probe(struct platform_device *pdev) } bus_nr = pdev->id; - clk_name[3] += (char)bus_nr; - dev->clk = devm_clk_get(&pdev->dev, clk_name); + dev->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(dev->clk)) { dev_err(&pdev->dev, "could not retrieve i2c bus clock\n"); return PTR_ERR(dev->clk); @@ -923,6 +922,7 @@ stu300_probe(struct platform_device *pdev) adap->nr = bus_nr; adap->algo = &stu300_algo; adap->dev.parent = &pdev->dev; + adap->dev.of_node = pdev->dev.of_node; i2c_set_adapdata(adap, dev); /* i2c device drivers may be active on return from add_adapter() */ @@ -934,6 +934,10 @@ stu300_probe(struct platform_device *pdev) } platform_set_drvdata(pdev, dev); + dev_info(&pdev->dev, "ST DDC I2C @ %p, irq %d\n", + dev->virtbase, dev->irq); + of_i2c_register_devices(adap); + return 0; } @@ -978,11 +982,17 @@ stu300_remove(struct platform_device *pdev) return 0; } +static const struct of_device_id stu300_dt_match[] = { + { .compatible = "st,ddci2c" }, + {}, +}; + static struct platform_driver stu300_i2c_driver = { .driver = { .name = NAME, .owner = THIS_MODULE, .pm = STU300_I2C_PM, + .of_match_table = stu300_dt_match, }, .remove = __exit_p(stu300_remove), diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 48e31ed..f32ca29 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -435,7 +435,7 @@ static const struct dev_pm_ops i2c_device_pm_ops = { SET_RUNTIME_PM_OPS( pm_generic_runtime_suspend, pm_generic_runtime_resume, - pm_generic_runtime_idle + NULL ) }; |