From: Lee Jones <lee.jones@linaro.org> To: patrice.chotard@st.com Cc: gnurou@gmail.com, amelie.delaunay@st.com, vireshk@kernel.org, linus.walleij@linaro.org, linux-gpio@vger.kernel.org, thierry.reding@gmail.com, kernel@pengutronix.de, dinguyen@opensource.altera.com, shawnguo@kernel.org, shiraz.linux.kernel@gmail.com, linux-arm-kernel@lists.infradead.org Subject: Re: [RESEND v2 02/10] mfd: stmpe: Add reset support for all STMPE variant Date: Wed, 10 Aug 2016 09:28:59 +0100 [thread overview] Message-ID: <20160810082859.GH1581@dell> (raw) In-Reply-To: <1470814755-19447-3-git-send-email-patrice.chotard@st.com> On Wed, 10 Aug 2016, patrice.chotard@st.com wrote: > From: Patrice Chotard <patrice.chotard@st.com> > > Reset was only implemented for STMPE1801 variant despite > all variant have a SOFT_RESET bit. > > For STMPE2401/2403/801/1601/1801 SOFT_RESET bit is bit 7 > of SYS_CTRL register. > For STMPE610/811 (which have the same variant id) SOFT_RESET > bit is bit 1 of SYS_CTRL register. > > Signed-off-by: Patrice Chotard <patrice.chotard@st.com> > Acked-by: Linus Walleij <linus.walleij@linaro.org> > Acked-by: Lee Jones <lee.jones@linaro.org> > --- > drivers/mfd/stmpe.c | 23 +++++++++++++++-------- > drivers/mfd/stmpe.h | 7 +++++-- > 2 files changed, 20 insertions(+), 10 deletions(-) Applied, thanks. > diff --git a/drivers/mfd/stmpe.c b/drivers/mfd/stmpe.c > index c553b73..af682d0 100644 > --- a/drivers/mfd/stmpe.c > +++ b/drivers/mfd/stmpe.c > @@ -735,13 +735,22 @@ static int stmpe1801_enable(struct stmpe *stmpe, unsigned int blocks, > enable ? mask : 0); > } > > -static int stmpe1801_reset(struct stmpe *stmpe) > +static int stmpe_reset(struct stmpe *stmpe) > { > + u16 id_val = stmpe->variant->id_val; > unsigned long timeout; > int ret = 0; > + u8 reset_bit; > + > + if (id_val == STMPE811_ID) > + /* STMPE801 and STMPE610 use bit 1 of SYS_CTRL register */ > + reset_bit = STMPE811_SYS_CTRL_RESET; > + else > + /* all other STMPE variant use bit 7 of SYS_CTRL register */ > + reset_bit = STMPE_SYS_CTRL_RESET; > > ret = __stmpe_set_bits(stmpe, stmpe->regs[STMPE_IDX_SYS_CTRL], > - STMPE1801_MSK_SYS_CTRL_RESET, STMPE1801_MSK_SYS_CTRL_RESET); > + reset_bit, reset_bit); > if (ret < 0) > return ret; > > @@ -750,7 +759,7 @@ static int stmpe1801_reset(struct stmpe *stmpe) > ret = __stmpe_reg_read(stmpe, stmpe->regs[STMPE_IDX_SYS_CTRL]); > if (ret < 0) > return ret; > - if (!(ret & STMPE1801_MSK_SYS_CTRL_RESET)) > + if (!(ret & reset_bit)) > return 0; > usleep_range(100, 200); > } > @@ -1074,11 +1083,9 @@ static int stmpe_chip_init(struct stmpe *stmpe) > if (ret) > return ret; > > - if (id == STMPE1801_ID) { > - ret = stmpe1801_reset(stmpe); > - if (ret < 0) > - return ret; > - } > + ret = stmpe_reset(stmpe); > + if (ret < 0) > + return ret; > > if (stmpe->irq >= 0) { > if (id == STMPE801_ID) > diff --git a/drivers/mfd/stmpe.h b/drivers/mfd/stmpe.h > index 406f9f2..4ae343d 100644 > --- a/drivers/mfd/stmpe.h > +++ b/drivers/mfd/stmpe.h > @@ -104,6 +104,8 @@ int stmpe_remove(struct stmpe *stmpe); > #define STMPE_ICR_LSB_EDGE (1 << 1) > #define STMPE_ICR_LSB_GIM (1 << 0) > > +#define STMPE_SYS_CTRL_RESET (1 << 7) > + > /* > * STMPE801 > */ > @@ -126,6 +128,7 @@ int stmpe_remove(struct stmpe *stmpe); > /* > * STMPE811 > */ > +#define STMPE811_ID 0x0811 > > #define STMPE811_IRQ_TOUCH_DET 0 > #define STMPE811_IRQ_FIFO_TH 1 > @@ -155,6 +158,8 @@ int stmpe_remove(struct stmpe *stmpe); > #define STMPE811_REG_GPIO_FE 0x16 > #define STMPE811_REG_GPIO_AF 0x17 > > +#define STMPE811_SYS_CTRL_RESET (1 << 1) > + > #define STMPE811_SYS_CTRL2_ADC_OFF (1 << 0) > #define STMPE811_SYS_CTRL2_TSC_OFF (1 << 1) > #define STMPE811_SYS_CTRL2_GPIO_OFF (1 << 2) > @@ -244,8 +249,6 @@ int stmpe_remove(struct stmpe *stmpe); > #define STMPE1801_REG_GPIO_PULL_UP_MID 0x23 > #define STMPE1801_REG_GPIO_PULL_UP_HIGH 0x24 > > -#define STMPE1801_MSK_SYS_CTRL_RESET (1 << 7) > - > #define STMPE1801_MSK_INT_EN_KPC (1 << 1) > #define STMPE1801_MSK_INT_EN_GPIO (1 << 3) > -- Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
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From: lee.jones@linaro.org (Lee Jones) To: linux-arm-kernel@lists.infradead.org Subject: [RESEND v2 02/10] mfd: stmpe: Add reset support for all STMPE variant Date: Wed, 10 Aug 2016 09:28:59 +0100 [thread overview] Message-ID: <20160810082859.GH1581@dell> (raw) In-Reply-To: <1470814755-19447-3-git-send-email-patrice.chotard@st.com> On Wed, 10 Aug 2016, patrice.chotard at st.com wrote: > From: Patrice Chotard <patrice.chotard@st.com> > > Reset was only implemented for STMPE1801 variant despite > all variant have a SOFT_RESET bit. > > For STMPE2401/2403/801/1601/1801 SOFT_RESET bit is bit 7 > of SYS_CTRL register. > For STMPE610/811 (which have the same variant id) SOFT_RESET > bit is bit 1 of SYS_CTRL register. > > Signed-off-by: Patrice Chotard <patrice.chotard@st.com> > Acked-by: Linus Walleij <linus.walleij@linaro.org> > Acked-by: Lee Jones <lee.jones@linaro.org> > --- > drivers/mfd/stmpe.c | 23 +++++++++++++++-------- > drivers/mfd/stmpe.h | 7 +++++-- > 2 files changed, 20 insertions(+), 10 deletions(-) Applied, thanks. > diff --git a/drivers/mfd/stmpe.c b/drivers/mfd/stmpe.c > index c553b73..af682d0 100644 > --- a/drivers/mfd/stmpe.c > +++ b/drivers/mfd/stmpe.c > @@ -735,13 +735,22 @@ static int stmpe1801_enable(struct stmpe *stmpe, unsigned int blocks, > enable ? mask : 0); > } > > -static int stmpe1801_reset(struct stmpe *stmpe) > +static int stmpe_reset(struct stmpe *stmpe) > { > + u16 id_val = stmpe->variant->id_val; > unsigned long timeout; > int ret = 0; > + u8 reset_bit; > + > + if (id_val == STMPE811_ID) > + /* STMPE801 and STMPE610 use bit 1 of SYS_CTRL register */ > + reset_bit = STMPE811_SYS_CTRL_RESET; > + else > + /* all other STMPE variant use bit 7 of SYS_CTRL register */ > + reset_bit = STMPE_SYS_CTRL_RESET; > > ret = __stmpe_set_bits(stmpe, stmpe->regs[STMPE_IDX_SYS_CTRL], > - STMPE1801_MSK_SYS_CTRL_RESET, STMPE1801_MSK_SYS_CTRL_RESET); > + reset_bit, reset_bit); > if (ret < 0) > return ret; > > @@ -750,7 +759,7 @@ static int stmpe1801_reset(struct stmpe *stmpe) > ret = __stmpe_reg_read(stmpe, stmpe->regs[STMPE_IDX_SYS_CTRL]); > if (ret < 0) > return ret; > - if (!(ret & STMPE1801_MSK_SYS_CTRL_RESET)) > + if (!(ret & reset_bit)) > return 0; > usleep_range(100, 200); > } > @@ -1074,11 +1083,9 @@ static int stmpe_chip_init(struct stmpe *stmpe) > if (ret) > return ret; > > - if (id == STMPE1801_ID) { > - ret = stmpe1801_reset(stmpe); > - if (ret < 0) > - return ret; > - } > + ret = stmpe_reset(stmpe); > + if (ret < 0) > + return ret; > > if (stmpe->irq >= 0) { > if (id == STMPE801_ID) > diff --git a/drivers/mfd/stmpe.h b/drivers/mfd/stmpe.h > index 406f9f2..4ae343d 100644 > --- a/drivers/mfd/stmpe.h > +++ b/drivers/mfd/stmpe.h > @@ -104,6 +104,8 @@ int stmpe_remove(struct stmpe *stmpe); > #define STMPE_ICR_LSB_EDGE (1 << 1) > #define STMPE_ICR_LSB_GIM (1 << 0) > > +#define STMPE_SYS_CTRL_RESET (1 << 7) > + > /* > * STMPE801 > */ > @@ -126,6 +128,7 @@ int stmpe_remove(struct stmpe *stmpe); > /* > * STMPE811 > */ > +#define STMPE811_ID 0x0811 > > #define STMPE811_IRQ_TOUCH_DET 0 > #define STMPE811_IRQ_FIFO_TH 1 > @@ -155,6 +158,8 @@ int stmpe_remove(struct stmpe *stmpe); > #define STMPE811_REG_GPIO_FE 0x16 > #define STMPE811_REG_GPIO_AF 0x17 > > +#define STMPE811_SYS_CTRL_RESET (1 << 1) > + > #define STMPE811_SYS_CTRL2_ADC_OFF (1 << 0) > #define STMPE811_SYS_CTRL2_TSC_OFF (1 << 1) > #define STMPE811_SYS_CTRL2_GPIO_OFF (1 << 2) > @@ -244,8 +249,6 @@ int stmpe_remove(struct stmpe *stmpe); > #define STMPE1801_REG_GPIO_PULL_UP_MID 0x23 > #define STMPE1801_REG_GPIO_PULL_UP_HIGH 0x24 > > -#define STMPE1801_MSK_SYS_CTRL_RESET (1 << 7) > - > #define STMPE1801_MSK_INT_EN_KPC (1 << 1) > #define STMPE1801_MSK_INT_EN_GPIO (1 << 3) > -- Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org ? Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog
next prev parent reply other threads:[~2016-08-10 8:28 UTC|newest] Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-08-10 7:39 [RESEND v2 00/10] STMPE fixes/rework and add STMPE1600 support patrice.chotard 2016-08-10 7:39 ` patrice.chotard at st.com 2016-08-10 7:39 ` [RESEND v2 01/10] mfd: stmpe: Add STMPE_IDX_SYS_CTRL/2 enum patrice.chotard 2016-08-10 7:39 ` patrice.chotard at st.com 2016-08-10 8:28 ` Lee Jones 2016-08-10 8:28 ` Lee Jones 2016-08-10 7:39 ` [RESEND v2 02/10] mfd: stmpe: Add reset support for all STMPE variant patrice.chotard 2016-08-10 7:39 ` patrice.chotard at st.com 2016-08-10 8:28 ` Lee Jones [this message] 2016-08-10 8:28 ` Lee Jones 2016-08-10 7:39 ` [RESEND v2 03/10] gpio: stmpe: fix edge and rising/falling edge detection patrice.chotard 2016-08-10 7:39 ` patrice.chotard at st.com 2016-08-10 8:29 ` Lee Jones 2016-08-10 8:29 ` Lee Jones 2016-08-10 7:39 ` [RESEND v2 04/10] gpio: stmpe: write int status register only when needed patrice.chotard 2016-08-10 7:39 ` patrice.chotard at st.com 2016-08-10 8:29 ` Lee Jones 2016-08-10 8:29 ` Lee Jones 2016-08-10 7:39 ` [RESEND v2 05/10] mfd: stmpe: use generic bit mask name patrice.chotard 2016-08-10 7:39 ` patrice.chotard at st.com 2016-08-10 8:29 ` Lee Jones 2016-08-10 8:29 ` Lee Jones 2016-08-10 7:39 ` [RESEND v2 06/10] mfd: stmpe: rework registers access patrice.chotard 2016-08-10 7:39 ` patrice.chotard at st.com 2016-08-10 8:29 ` Lee Jones 2016-08-10 8:29 ` Lee Jones 2016-08-10 7:39 ` [RESEND v2 07/10] gpio: " patrice.chotard 2016-08-10 7:39 ` patrice.chotard at st.com 2016-08-10 8:29 ` Lee Jones 2016-08-10 8:29 ` Lee Jones 2016-08-10 7:39 ` [RESEND v2 08/10] Documentation: dt: add stmpe1600 compatible string to stmpe mfd patrice.chotard 2016-08-10 7:39 ` patrice.chotard at st.com 2016-08-10 8:30 ` Lee Jones 2016-08-10 8:30 ` Lee Jones 2016-08-10 7:39 ` [RESEND v2 09/10] mfd: Add STMPE1600 support patrice.chotard 2016-08-10 7:39 ` patrice.chotard at st.com 2016-08-10 8:30 ` Lee Jones 2016-08-10 8:30 ` Lee Jones 2016-08-10 7:39 ` [RESEND v2 10/10] gpio: stmpe: " patrice.chotard 2016-08-10 7:39 ` patrice.chotard at st.com 2016-08-10 8:30 ` Lee Jones 2016-08-10 8:30 ` Lee Jones 2016-08-10 8:42 ` [GIT PULL] Immutable branch between MFD and GPIO due for v4.9 Lee Jones 2016-08-10 8:42 ` Lee Jones 2016-08-11 12:07 ` Linus Walleij 2016-08-11 12:07 ` Linus Walleij
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