| Message ID | 1397661299-31342-1-git-send-email-balbi@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
* Felipe Balbi <balbi@ti.com> [140416 08:18]: > TRM says we *must* write 1 to each bit we're handling > in order to clear the IRQ status and bring IRQ line > low. This patch implements that. > > Signed-off-by: Felipe Balbi <balbi@ti.com> > --- > > Russell, I don't have HW to test, but this should > solve the problem you saw when not using battery > with Zoom board. Let me know if it doesn't. BTW, looks like we're enabling BCI automatically in twl4030.dtsi while the legacy booting does not have TWL_COMMON_PDATA_BCI enabled for LDP. Anyways, for LDP BCI should be enabled for sure, that's the only way to power at least the earlier LDP revisions. > drivers/power/twl4030_charger.c | 16 ++++++++++++++-- > 1 file changed, 14 insertions(+), 2 deletions(-) > > diff --git a/drivers/power/twl4030_charger.c b/drivers/power/twl4030_charger.c > index f141088..b090842 100644 > --- a/drivers/power/twl4030_charger.c > +++ b/drivers/power/twl4030_charger.c > @@ -301,12 +301,24 @@ static irqreturn_t twl4030_bci_interrupt(int irq, void *arg) > ret = twl_i2c_read_u8(TWL4030_MODULE_INTERRUPTS, &irqs1, > TWL4030_INTERRUPTS_BCIISR1A); > if (ret < 0) > - return IRQ_HANDLED; > + return IRQ_NONE; > + > + /* clear IRQs early */ > + ret = twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, irqs1, > + TWL4030_INTERRUPTS_BCIISR1A); > + if (ret < 0) > + return IRQ_NONE; > > ret = twl_i2c_read_u8(TWL4030_MODULE_INTERRUPTS, &irqs2, > TWL4030_INTERRUPTS_BCIISR2A); > if (ret < 0) > - return IRQ_HANDLED; > + return IRQ_NONE; > + > + /* clear IRQs early */ > + ret = twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, irqs2, > + TWL4030_INTERRUPTS_BCIISR2A); > + if (ret < 0) > + return IRQ_NONE; > > dev_dbg(bci->dev, "BCI irq %02x %02x\n", irqs2, irqs1); > > -- > 1.9.1.286.g5172cb3 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
On 04/16/2014 11:35 AM, Tony Lindgren wrote: > * Felipe Balbi <balbi@ti.com> [140416 08:18]: >> TRM says we *must* write 1 to each bit we're handling >> in order to clear the IRQ status and bring IRQ line >> low. This patch implements that. >> >> Signed-off-by: Felipe Balbi <balbi@ti.com> >> --- >> >> Russell, I don't have HW to test, but this should >> solve the problem you saw when not using battery >> with Zoom board. Let me know if it doesn't. > > BTW, looks like we're enabling BCI automatically in twl4030.dtsi > while the legacy booting does not have TWL_COMMON_PDATA_BCI > enabled for LDP. Anyways, for LDP BCI should be enabled for > sure, that's the only way to power at least the earlier LDP > revisions. > I picked up https://patchwork.kernel.org/patch/4002371/ for testing. Unfortunately, it does not seem to work in my tests: ldp-board-no-battery uses upstream u-boot in a chainloaded configuration + does not have battery plugged in, instead, just J58 (charger) is connected - this is plugged on a remote farm setup for developers to work with. ldp-board-with-battery uses legacy bootloader with a battery simulator. omap2plus_defconfig + CONFIG_CHARGER_TWL4030 enabled. Result: v3-15-rc2-ldp-board-no-battery: Boot FAIL: http://slexy.org/raw/s20riTwu04 v3-15-rc2-ldp-board-with-battery: Boot PASS: http://slexy.org/raw/s2elKdJpI7 v3-15-rc2-with-felipe-fix-ldp-board-no-battery: Boot FAIL: http://slexy.org/raw/s20lKp2o0s This patch should probably also acknowledge that Russell reported this issue.
On Fri, Apr 25, 2014 at 03:58:10PM -0500, Nishanth Menon wrote: > On 04/16/2014 11:35 AM, Tony Lindgren wrote: > > * Felipe Balbi <balbi@ti.com> [140416 08:18]: > >> TRM says we *must* write 1 to each bit we're handling > >> in order to clear the IRQ status and bring IRQ line > >> low. This patch implements that. > >> > >> Signed-off-by: Felipe Balbi <balbi@ti.com> > >> --- > >> > >> Russell, I don't have HW to test, but this should > >> solve the problem you saw when not using battery > >> with Zoom board. Let me know if it doesn't. > > > > BTW, looks like we're enabling BCI automatically in twl4030.dtsi > > while the legacy booting does not have TWL_COMMON_PDATA_BCI > > enabled for LDP. Anyways, for LDP BCI should be enabled for > > sure, that's the only way to power at least the earlier LDP > > revisions. > > > I picked up https://patchwork.kernel.org/patch/4002371/ for testing. > > Unfortunately, it does not seem to work in my tests: alright, I'll have a look after I get this other issue out of the way. Probably not until next week. > This patch should probably also acknowledge that Russell reported this > issue. sure I can add that, although it doesn't solve anything as it is ...
diff --git a/drivers/power/twl4030_charger.c b/drivers/power/twl4030_charger.c index f141088..b090842 100644 --- a/drivers/power/twl4030_charger.c +++ b/drivers/power/twl4030_charger.c @@ -301,12 +301,24 @@ static irqreturn_t twl4030_bci_interrupt(int irq, void *arg) ret = twl_i2c_read_u8(TWL4030_MODULE_INTERRUPTS, &irqs1, TWL4030_INTERRUPTS_BCIISR1A); if (ret < 0) - return IRQ_HANDLED; + return IRQ_NONE; + + /* clear IRQs early */ + ret = twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, irqs1, + TWL4030_INTERRUPTS_BCIISR1A); + if (ret < 0) + return IRQ_NONE; ret = twl_i2c_read_u8(TWL4030_MODULE_INTERRUPTS, &irqs2, TWL4030_INTERRUPTS_BCIISR2A); if (ret < 0) - return IRQ_HANDLED; + return IRQ_NONE; + + /* clear IRQs early */ + ret = twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, irqs2, + TWL4030_INTERRUPTS_BCIISR2A); + if (ret < 0) + return IRQ_NONE; dev_dbg(bci->dev, "BCI irq %02x %02x\n", irqs2, irqs1);
TRM says we *must* write 1 to each bit we're handling in order to clear the IRQ status and bring IRQ line low. This patch implements that. Signed-off-by: Felipe Balbi <balbi@ti.com> --- Russell, I don't have HW to test, but this should solve the problem you saw when not using battery with Zoom board. Let me know if it doesn't. cheers drivers/power/twl4030_charger.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-)