Blackfin: import gpio/portmux layer from Linux

The current pinmux handling has spread throughout Blackfin drivers and
board code and is getting hideous to maintain.  So import the gpio and
portmux layer from the Blackfin Linux code.  This should spur a serious
of cleanups across the Blackfin tree.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

1 files changed, 201 insertions, 0 deletions

diff --git a/arch/blackfin/include/asm/gpio.h b/arch/blackfin/include/asm/gpio.h
new file mode 100644
index 0000000..b650ef0
--- /dev/null
+++ b/arch/blackfin/include/asm/gpio.h
@@ -0,0 +1,201 @@
+/*
+ * Copyright 2006-2009 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __ARCH_BLACKFIN_GPIO_H__
+#define __ARCH_BLACKFIN_GPIO_H__
+
+#define gpio_bank(x)	((x) >> 4)
+#define gpio_bit(x)	(1<<((x) & 0xF))
+#define gpio_sub_n(x)	((x) & 0xF)
+
+#define GPIO_BANKSIZE	16
+#define GPIO_BANK_NUM	DIV_ROUND_UP(MAX_BLACKFIN_GPIOS, GPIO_BANKSIZE)
+
+#define GPIO_0	0
+#define GPIO_1	1
+#define GPIO_2	2
+#define GPIO_3	3
+#define GPIO_4	4
+#define GPIO_5	5
+#define GPIO_6	6
+#define GPIO_7	7
+#define GPIO_8	8
+#define GPIO_9	9
+#define GPIO_10	10
+#define GPIO_11	11
+#define GPIO_12	12
+#define GPIO_13	13
+#define GPIO_14	14
+#define GPIO_15	15
+#define GPIO_16	16
+#define GPIO_17	17
+#define GPIO_18	18
+#define GPIO_19	19
+#define GPIO_20	20
+#define GPIO_21	21
+#define GPIO_22	22
+#define GPIO_23	23
+#define GPIO_24	24
+#define GPIO_25	25
+#define GPIO_26	26
+#define GPIO_27	27
+#define GPIO_28	28
+#define GPIO_29	29
+#define GPIO_30	30
+#define GPIO_31	31
+#define GPIO_32	32
+#define GPIO_33	33
+#define GPIO_34	34
+#define GPIO_35	35
+#define GPIO_36	36
+#define GPIO_37	37
+#define GPIO_38	38
+#define GPIO_39	39
+#define GPIO_40	40
+#define GPIO_41	41
+#define GPIO_42	42
+#define GPIO_43	43
+#define GPIO_44	44
+#define GPIO_45	45
+#define GPIO_46	46
+#define GPIO_47	47
+
+#define PERIPHERAL_USAGE 1
+#define GPIO_USAGE 0
+
+#ifndef __ASSEMBLY__
+
+#ifndef CONFIG_BF54x
+void set_gpio_dir(unsigned, unsigned short);
+void set_gpio_inen(unsigned, unsigned short);
+void set_gpio_polar(unsigned, unsigned short);
+void set_gpio_edge(unsigned, unsigned short);
+void set_gpio_both(unsigned, unsigned short);
+void set_gpio_data(unsigned, unsigned short);
+void set_gpio_maska(unsigned, unsigned short);
+void set_gpio_maskb(unsigned, unsigned short);
+void set_gpio_toggle(unsigned);
+void set_gpiop_dir(unsigned, unsigned short);
+void set_gpiop_inen(unsigned, unsigned short);
+void set_gpiop_polar(unsigned, unsigned short);
+void set_gpiop_edge(unsigned, unsigned short);
+void set_gpiop_both(unsigned, unsigned short);
+void set_gpiop_data(unsigned, unsigned short);
+void set_gpiop_maska(unsigned, unsigned short);
+void set_gpiop_maskb(unsigned, unsigned short);
+unsigned short get_gpio_dir(unsigned);
+unsigned short get_gpio_inen(unsigned);
+unsigned short get_gpio_polar(unsigned);
+unsigned short get_gpio_edge(unsigned);
+unsigned short get_gpio_both(unsigned);
+unsigned short get_gpio_maska(unsigned);
+unsigned short get_gpio_maskb(unsigned);
+unsigned short get_gpio_data(unsigned);
+unsigned short get_gpiop_dir(unsigned);
+unsigned short get_gpiop_inen(unsigned);
+unsigned short get_gpiop_polar(unsigned);
+unsigned short get_gpiop_edge(unsigned);
+unsigned short get_gpiop_both(unsigned);
+unsigned short get_gpiop_maska(unsigned);
+unsigned short get_gpiop_maskb(unsigned);
+unsigned short get_gpiop_data(unsigned);
+
+struct gpio_port_t {
+	unsigned short data;
+	unsigned short dummy1;
+	unsigned short data_clear;
+	unsigned short dummy2;
+	unsigned short data_set;
+	unsigned short dummy3;
+	unsigned short toggle;
+	unsigned short dummy4;
+	unsigned short maska;
+	unsigned short dummy5;
+	unsigned short maska_clear;
+	unsigned short dummy6;
+	unsigned short maska_set;
+	unsigned short dummy7;
+	unsigned short maska_toggle;
+	unsigned short dummy8;
+	unsigned short maskb;
+	unsigned short dummy9;
+	unsigned short maskb_clear;
+	unsigned short dummy10;
+	unsigned short maskb_set;
+	unsigned short dummy11;
+	unsigned short maskb_toggle;
+	unsigned short dummy12;
+	unsigned short dir;
+	unsigned short dummy13;
+	unsigned short polar;
+	unsigned short dummy14;
+	unsigned short edge;
+	unsigned short dummy15;
+	unsigned short both;
+	unsigned short dummy16;
+	unsigned short inen;
+};
+#endif
+
+#ifdef CONFIG_BFIN_GPIO_TRACK
+void bfin_gpio_labels(void);
+#else
+#define bfin_gpio_labels()
+#define bfin_gpio_request(gpio, label) bfin_gpio_request(gpio)
+#define bfin_special_gpio_request(gpio, label) bfin_special_gpio_request(gpio)
+#endif
+
+#ifdef BFIN_SPECIAL_GPIO_BANKS
+void bfin_special_gpio_free(unsigned gpio);
+int bfin_special_gpio_request(unsigned gpio, const char *label);
+#endif
+
+int bfin_gpio_request(unsigned gpio, const char *label);
+void bfin_gpio_free(unsigned gpio);
+int bfin_gpio_direction_input(unsigned gpio);
+int bfin_gpio_direction_output(unsigned gpio, int value);
+int bfin_gpio_get_value(unsigned gpio);
+void bfin_gpio_set_value(unsigned gpio, int value);
+void bfin_gpio_toggle_value(unsigned gpio);
+
+static inline int gpio_request(unsigned gpio, const char *label)
+{
+	return bfin_gpio_request(gpio, label);
+}
+
+static inline void gpio_free(unsigned gpio)
+{
+	return bfin_gpio_free(gpio);
+}
+
+static inline int gpio_direction_input(unsigned gpio)
+{
+	return bfin_gpio_direction_input(gpio);
+}
+
+static inline int gpio_direction_output(unsigned gpio, int value)
+{
+	return bfin_gpio_direction_output(gpio, value);
+}
+
+static inline int gpio_get_value(unsigned gpio)
+{
+	return bfin_gpio_get_value(gpio);
+}
+
+static inline void gpio_set_value(unsigned gpio, int value)
+{
+	return bfin_gpio_set_value(gpio, value);
+}
+
+static inline int gpio_is_valid(int number)
+{
+	return number >= 0 && number < MAX_BLACKFIN_GPIOS;
+}
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* __ARCH_BLACKFIN_GPIO_H__ */