gpio: AMD G-Series PCH gpio driver

GPIO platform driver for the AMD G-series PCH (eg. on GX-412TC)

This driver doesn't registers itself automatically, as it needs to
be provided with platform specific configuration, provided by some
board driver setup code.

Didn't implement oftree probing yet, as it's rarely found on x86.

Cc: linux-gpio@vger.kernel.org
Cc: linus.walleij@linaro.org
Cc: bgolaszewski@baylibre.com
Cc: dvhart@infradead.org
Cc: platform-driver-x86@vger.kernel.org
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 46 insertions, 0 deletions

diff --git a/include/linux/platform_data/gpio/gpio-amd-fch.h b/include/linux/platform_data/gpio/gpio-amd-fch.h
new file mode 100644
index 000000000000..a867637e172d
--- /dev/null
+++ b/include/linux/platform_data/gpio/gpio-amd-fch.h
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: GPL+ */
+
+/*
+ * AMD FCH gpio driver platform-data
+ *
+ * Copyright (C) 2018 metux IT consult
+ * Author: Enrico Weigelt <info@metux.net>
+ *
+ */
+
+#ifndef __LINUX_PLATFORM_DATA_GPIO_AMD_FCH_H
+#define __LINUX_PLATFORM_DATA_GPIO_AMD_FCH_H
+
+#define AMD_FCH_GPIO_DRIVER_NAME "gpio_amd_fch"
+
+/*
+ * gpio register index definitions
+ */
+#define AMD_FCH_GPIO_REG_GPIO49         0x40
+#define AMD_FCH_GPIO_REG_GPIO50         0x41
+#define AMD_FCH_GPIO_REG_GPIO51         0x42
+#define AMD_FCH_GPIO_REG_GPIO59_DEVSLP0 0x43
+#define AMD_FCH_GPIO_REG_GPIO57         0x44
+#define AMD_FCH_GPIO_REG_GPIO58         0x45
+#define AMD_FCH_GPIO_REG_GPIO59_DEVSLP1 0x46
+#define AMD_FCH_GPIO_REG_GPIO64         0x47
+#define AMD_FCH_GPIO_REG_GPIO68         0x48
+#define AMD_FCH_GPIO_REG_GPIO66_SPKR    0x5B
+#define AMD_FCH_GPIO_REG_GPIO71         0x4D
+#define AMD_FCH_GPIO_REG_GPIO32_GE1     0x59
+#define AMD_FCH_GPIO_REG_GPIO33_GE2     0x5A
+#define AMT_FCH_GPIO_REG_GEVT22         0x09
+
+/*
+ * struct amd_fch_gpio_pdata - GPIO chip platform data
+ * @gpio_num: number of entries
+ * @gpio_reg: array of gpio registers
+ * @gpio_names: array of gpio names
+ */
+struct amd_fch_gpio_pdata {
+        int                     gpio_num;
+        int                     *gpio_reg;
+        const char * const      *gpio_names;
+};
+
+#endif /* __LINUX_PLATFORM_DATA_GPIO_AMD_FCH_H */