Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / pinctrl / vt8500 / pinctrl-wmt.h

diff --git a/kernel/drivers/pinctrl/vt8500/pinctrl-wmt.h b/kernel/drivers/pinctrl/vt8500/pinctrl-wmt.h
new file mode 100644 (file)
index 0000000..41f5f2d
--- /dev/null
+++ b/kernel/drivers/pinctrl/vt8500/pinctrl-wmt.h
@@ -0,0 +1,79 @@
+/*
+ * Pinctrl driver for the Wondermedia SoC's
+ *
+ * Copyright (c) 2013 Tony Prisk <linux@prisktech.co.nz>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+
+#include <linux/gpio.h>
+
+/* VT8500 has no enable register in the extgpio bank. */
+#define NO_REG 0xFFFF
+
+#define WMT_PINCTRL_BANK(__en, __dir, __dout, __din, __pen, __pcfg)    \
+{                                                                      \
+       .reg_en         = __en,                                         \
+       .reg_dir        = __dir,                                        \
+       .reg_data_out   = __dout,                                       \
+       .reg_data_in    = __din,                                        \
+       .reg_pull_en    = __pen,                                        \
+       .reg_pull_cfg   = __pcfg,                                       \
+}
+
+/* Encode/decode the bank/bit pairs into a pin value */
+#define WMT_PIN(__bank, __offset)      ((__bank << 5) | __offset)
+#define WMT_BANK_FROM_PIN(__pin)       (__pin >> 5)
+#define WMT_BIT_FROM_PIN(__pin)                (__pin & 0x1f)
+
+#define WMT_GROUP(__name, __data)              \
+{                                              \
+       .name = __name,                         \
+       .pins = __data,                         \
+       .npins = ARRAY_SIZE(__data),            \
+}
+
+struct wmt_pinctrl_bank_registers {
+       u32     reg_en;
+       u32     reg_dir;
+       u32     reg_data_out;
+       u32     reg_data_in;
+
+       u32     reg_pull_en;
+       u32     reg_pull_cfg;
+};
+
+struct wmt_pinctrl_group {
+       const char *name;
+       const unsigned int *pins;
+       const unsigned npins;
+};
+
+struct wmt_pinctrl_data {
+       struct device *dev;
+       struct pinctrl_dev *pctl_dev;
+
+       /* must be initialized before calling wmt_pinctrl_probe */
+       void __iomem *base;
+       const struct wmt_pinctrl_bank_registers *banks;
+       const struct pinctrl_pin_desc *pins;
+       const char * const *groups;
+
+       u32 nbanks;
+       u32 npins;
+       u32 ngroups;
+
+       struct gpio_chip gpio_chip;
+       struct pinctrl_gpio_range gpio_range;
+};
+
+int wmt_pinctrl_probe(struct platform_device *pdev,
+                     struct wmt_pinctrl_data *data);
+int wmt_pinctrl_remove(struct platform_device *pdev);