Remove the IRQ list from the header, as this is used only
inside the driver itself. Also, get rid of two unused
defines.
The net result is that only struct hi6421_spmi_pmic remains
on it, as this is used by the regulator driver.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/138c3a11e4de0ebabdf27932957852136c2f7510.1611949675.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The original driver, which can be seen at
commit 42f24d9d44 ("staging: regulator: add a regulator driver for HiSilicon 6421v600 SPMI PMIC")
had a complex logic to ensure that there won't be multiple power
enable/disable commands running at the same time. At the original
logic, it were ensured that:
- a next power up/down would wait for at least the on/off period;
- an extra delay would be granted. It turns that such extra delay
has a value of zero, but it was relying on gettimeofday()
call, which can take some time.
This was later simplified, but there are still some possible
issues. In order to avoid that, let's simply add a delay
to wait for the power up line to stabilize after powering up
a device.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/6733dac9813ba6688def404142cb7b964accf758.1611212783.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Both irqnum and irqarray properties reflect the same thing:
the number of bits and bytes for interrupts at this
chipset. E. g.:
irqnum = 8 x irqarray
This can be seen by the way pending interrupts are handled:
/* During probe time */
pmic->irqs = devm_kzalloc(dev, pmic->irqnum * sizeof(int), GFP_KERNEL);
/* While handling IRQs */
for (i = 0; i < pmic->irqarray; i++) {
pending = hi6421_spmi_pmic_read(pmic, (i + pmic->irq_addr));
pending &= 0xff;
for_each_set_bit(offset, &pending, 8)
generic_handle_irq(pmic->irqs[offset + i * 8]);
}
Going further, there are some logic at the driver which assumes
that irqarray is 2:
/* solve powerkey order */
if ((i == HISI_IRQ_KEY_NUM) &&
((pending & HISI_IRQ_KEY_VALUE) == HISI_IRQ_KEY_VALUE)) {
generic_handle_irq(pmic->irqs[HISI_IRQ_KEY_DOWN]);
generic_handle_irq(pmic->irqs[HISI_IRQ_KEY_UP]);
pending &= (~HISI_IRQ_KEY_VALUE);
}
As HISI_IRQ_KEY_DOWN and HISI_IRQ_KEY_UP are fixed values
and don't depend on irqnum/irqarray.
The IRQ addr and mask addr seem to be also fixed, based on some
comments at the OF parsing code. So, get rid of them too,
removing the of parsing function completely.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/e231244e42cb5b56240705cac2f987e11a078038.1597762400.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There are several OF properties that aren't used by Hikey 970,
and some are not even used inside the driver.
So, drop them, as as this makes easier to document what's
actually used.
If latter needed, those could be re-added later.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/332f96c178b81bf1e9908a1da2127f043909ae0c.1597647359.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There are some checks there which could make sense for
downstream builds, but doesn't make much sense for
upstream ones. They came from the official Hikey970 tree
from Linaro, but even there, the commented-out code is not
set via other Kconfig vars.
So, let's just get rid of that. If needed later, this
patch can be (partially?) reversed.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/ecbef801f6c32ba0850ad9e5c534a4304807df3b.1597647359.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add the PMIC SPMI driver for the HiSilicon 6421v600.
[mchehab+huawei@kernel.org: keep just the MFD driver on this patch,
and renamed filenames to better match other upstream drivers]
The compete patch is at:
08464419fb
Signed-off-by: Mayulong <mayulong1@huawei.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/4ffb2694244baa47387e39e2c5d71243242c1fc1.1597647359.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
