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Message-ID: <20121206164054.GV2718@gmail.com> Date: Thu, 6 Dec 2012 16:40:54 +0000 From: Lee Jones <lee.jones@...aro.org> To: Viresh Kumar <viresh.kumar@...aro.org> Cc: sameo@...ux.intel.com, devicetree-discuss@...ts.ozlabs.org, linux-kernel@...r.kernel.org, spear-devel@...t.st.com, Vipul Kumar Samar <vipulkumar.samar@...com> Subject: Re: [PATCH V6] mfd: stmpe: Update DT support for stmpe driver On Thu, 06 Dec 2012, Viresh Kumar wrote: > From: Vipul Kumar Samar <vipulkumar.samar@...com> > > This patch extends existing DT support for stmpe devices. This updates: > - missing header files in stmpe.c > - stmpe_of_probe() with pwm, rotator and new bindings. > - Bindings are updated in binding document. > > Acked-by: Lee Jones <lee.jones@...aro.org> > Signed-off-by: Vipul Kumar Samar <vipulkumar.samar@...com> > Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org> > --- > Hi Samuel, > > I have added acked by Lee as he earlier Acked this patch, most of the part is > still the same. And nothing new added. > > V5->V6: > - Removed of_devide_id tables from stmpe-i2c[spi].c > > Documentation/devicetree/bindings/mfd/stmpe.txt | 9 ++++++--- > drivers/mfd/stmpe.c | 27 +++++++++++++++++++------ > 2 files changed, 27 insertions(+), 9 deletions(-) > > diff --git a/Documentation/devicetree/bindings/mfd/stmpe.txt b/Documentation/devicetree/bindings/mfd/stmpe.txt > index 8f0aeda..d2d88d9 100644 > --- a/Documentation/devicetree/bindings/mfd/stmpe.txt > +++ b/Documentation/devicetree/bindings/mfd/stmpe.txt > @@ -1,8 +1,11 @@ > -* STMPE Multi-Functional Device > +* ST Microelectronics STMPE Multi-Functional Device > + > +STMPE is an MFD device which may expose following inbuilt devices: gpio, keypad, ^ the > +touchscreen, adc, pwm, rotator. > > Required properties: > - - compatible : "st,stmpe[811|1601|2401|2403]" > - - reg : I2C address of the device > + - compatible : "st,stmpe[610|801|811|1601|2401|2403]" > + - reg : I2C/SPI address of the device > > Optional properties: > - interrupts : The interrupt outputs from the controller > diff --git a/drivers/mfd/stmpe.c b/drivers/mfd/stmpe.c > index 34408b4..bb2dfdb 100644 > --- a/drivers/mfd/stmpe.c > +++ b/drivers/mfd/stmpe.c > @@ -7,12 +7,15 @@ > * Author: Rabin Vincent <rabin.vincent@...ricsson.com> for ST-Ericsson > */ > > +#include <linux/err.h> > #include <linux/gpio.h> > #include <linux/export.h> > #include <linux/kernel.h> > #include <linux/interrupt.h> > #include <linux/irq.h> > #include <linux/irqdomain.h> > +#include <linux/of.h> > +#include <linux/of_gpio.h> > #include <linux/pm.h> > #include <linux/slab.h> > #include <linux/mfd/core.h> > @@ -1019,6 +1022,14 @@ void __devinit stmpe_of_probe(struct stmpe_platform_data *pdata, > { > struct device_node *child; > > + /* > + * Distinct names of same cell-type within multiple instances of stmpe > + * will be guaranteed by DT. > + */ I think the comment is unnecessary. > + pdata->id = -1; Perhaps PLATFORM_DEVID_AUTO would be better? > + pdata->irq_trigger = IRQF_TRIGGER_NONE; > + There's no need for this. It's guaranteed to be zero by: pdata = kzalloc(sizeof(*pdata), GFP_KERNEL); > of_property_read_u32(np, "st,autosleep-timeout", > &pdata->autosleep_timeout); > > @@ -1027,15 +1038,16 @@ void __devinit stmpe_of_probe(struct stmpe_platform_data *pdata, > for_each_child_of_node(np, child) { > if (!strcmp(child->name, "stmpe_gpio")) { > pdata->blocks |= STMPE_BLOCK_GPIO; > - } > - if (!strcmp(child->name, "stmpe_keypad")) { > + } else if (!strcmp(child->name, "stmpe_keypad")) { > pdata->blocks |= STMPE_BLOCK_KEYPAD; > - } > - if (!strcmp(child->name, "stmpe_touchscreen")) { > + } else if (!strcmp(child->name, "stmpe_touchscreen")) { > pdata->blocks |= STMPE_BLOCK_TOUCHSCREEN; > - } > - if (!strcmp(child->name, "stmpe_adc")) { > + } else if (!strcmp(child->name, "stmpe_adc")) { > pdata->blocks |= STMPE_BLOCK_ADC; > + } else if (!strcmp(child->name, "stmpe_pwm")) { > + pdata->blocks |= STMPE_BLOCK_PWM; > + } else if (!strcmp(child->name, "stmpe_rotator")) { > + pdata->blocks |= STMPE_BLOCK_ROTATOR; > } > } > } > @@ -1106,6 +1118,9 @@ int __devinit stmpe_probe(struct stmpe_client_info *ci, int partnum) > return -ENODEV; > } > stmpe->variant = stmpe_noirq_variant_info[stmpe->partnum]; > + } else if (pdata->irq_trigger == IRQF_TRIGGER_NONE) { > + pdata->irq_trigger = > + irqd_get_trigger_type(irq_get_irq_data(stmpe->irq)); > } > > ret = stmpe_chip_init(stmpe); > -- > 1.7.12.rc2.18.g61b472e > -- Lee Jones Linaro ST-Ericsson Landing Team Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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