Re: [RESEND PATCH v16 mfd 1/8] mfd: ocelot: add helper to get regmap from a resource
From: Lee Jones <lee@kernel.org>
Date: 2022-09-08 09:41:06
Also in:
linux-arm-kernel, linux-devicetree, linux-gpio, lkml
On Mon, 05 Sep 2022, Colin Foster wrote:
Several ocelot-related modules are designed for MMIO / regmaps. As such,
they often use a combination of devm_platform_get_and_ioremap_resource()
and devm_regmap_init_mmio().
Operating in an MFD might be different, in that it could be memory mapped,
or it could be SPI, I2C... In these cases a fallback to use IORESOURCE_REG
instead of IORESOURCE_MEM becomes necessary.
When this happens, there's redundant logic that needs to be implemented in
every driver. In order to avoid this redundancy, utilize a single function
that, if the MFD scenario is enabled, will perform this fallback logic.
Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andy Shevchenko <redacted>
---
v16
* Add Andy Reviewed-by tag
v15
* Add missed errno.h and ioport.h includes
* Add () to function references in both the commit log and comments
v14
* Add header guard
* Change regs type from u32* to void*
* Add Reviewed-by tag
---
MAINTAINERS | 5 +++
include/linux/mfd/ocelot.h | 62 ++++++++++++++++++++++++++++++++++++++
2 files changed, 67 insertions(+)
create mode 100644 include/linux/mfd/ocelot.hApplied, thanks. -- Lee Jones [李琼斯]