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Platform: OLPC: Add XO-1.75 EC driver
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It's based off the driver from the OLPC kernel sources. Somewhat
modernized and cleaned up, for better or worse.

Modified to plug into the olpc-ec driver infrastructure (so that battery
interface and debugfs could be reused) and the SPI slave framework.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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Lubomir Rintel authored and Andy Shevchenko committed May 20, 2019
1 parent 8097548 commit 0c3d931
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Showing 7 changed files with 774 additions and 4 deletions.
1 change: 1 addition & 0 deletions arch/x86/Kconfig
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Expand Up @@ -2698,6 +2698,7 @@ config OLPC
select OF
select OF_PROMTREE
select IRQ_DOMAIN
select OLPC_EC
---help---
Add support for detecting the unique features of the OLPC
XO hardware.
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2 changes: 2 additions & 0 deletions drivers/platform/Kconfig
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Expand Up @@ -10,3 +10,5 @@ source "drivers/platform/goldfish/Kconfig"
source "drivers/platform/chrome/Kconfig"

source "drivers/platform/mellanox/Kconfig"

source "drivers/platform/olpc/Kconfig"
2 changes: 1 addition & 1 deletion drivers/platform/Makefile
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Expand Up @@ -6,6 +6,6 @@
obj-$(CONFIG_X86) += x86/
obj-$(CONFIG_MELLANOX_PLATFORM) += mellanox/
obj-$(CONFIG_MIPS) += mips/
obj-$(CONFIG_OLPC) += olpc/
obj-$(CONFIG_OLPC_EC) += olpc/
obj-$(CONFIG_GOLDFISH) += goldfish/
obj-$(CONFIG_CHROME_PLATFORMS) += chrome/
14 changes: 14 additions & 0 deletions drivers/platform/olpc/Kconfig
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@@ -0,0 +1,14 @@
config OLPC_EC
bool

config OLPC_XO175_EC
tristate "OLPC XO 1.75 Embedded Controller"
depends on ARCH_MMP || COMPILE_TEST
select SPI_SLAVE
select OLPC_EC
help
Include support for the OLPC XO Embedded Controller (EC). The EC
provides various platform services, including support for the power,
button, restart, shutdown and battery charging status.

Unless you have an OLPC XO laptop, you will want to say N.
3 changes: 2 additions & 1 deletion drivers/platform/olpc/Makefile
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@@ -1,4 +1,5 @@
#
# OLPC XO platform-specific drivers
#
obj-$(CONFIG_OLPC) += olpc-ec.o
obj-$(CONFIG_OLPC_EC) += olpc-ec.o
obj-$(CONFIG_OLPC_XO175_EC) += olpc-xo175-ec.o
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