ARM: uniphier: refactor LED function

The macro, led_write(), is now only used in C sources.  There is no
more reason to keep the tricky assembly macro.  Replace it with a
new C function led_puts().

Also, rename board.h to micro-support-card.h.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arch/arm/mach-uniphier/board_common.c

@@ -1,20 +1,15 @@
 /*
- * Copyright (C) 2012-2014 Panasonic Corporation
- *   Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
+ * Copyright (C) 2012-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
-#include <mach/led.h>
+#include <mach/micro-support-card.h>
 
-/*
- * Routine: board_init
- * Description: Early hardware init.
- */
 int board_init(void)
 {
-	led_write(U, B, O, O);
+	led_puts("Uboo");
 
 	return 0;
 }

arch/arm/mach-uniphier/board_early_init_f.c

@@ -1,27 +1,25 @@
 /*
- * Copyright (C) 2012-2015 Panasonic Corporation
- *   Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
+ * Copyright (C) 2012-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
-#include <mach/led.h>
-#include <mach/board.h>
+#include <mach/micro-support-card.h>
 
 void pin_init(void);
 void clkrst_init(void);
 
 int board_early_init_f(void)
 {
-	led_write(U, 0, , );
+	led_puts("U0");
 
 	pin_init();
 
-	led_write(U, 1, , );
+	led_puts("U1");
 
 	clkrst_init();
 
-	led_write(U, 2, , );
+	led_puts("U2");
 
 	return 0;
 }

arch/arm/mach-uniphier/board_early_init_r.c

@@ -5,7 +5,7 @@
  */
 
 #include <common.h>
-#include <mach/board.h>
+#include <mach/micro-support-card.h>
 
 int board_early_init_r(void)
 {

arch/arm/mach-uniphier/include/mach/led.h

@@ -1,100 +0,0 @@
-/*
- * Copyright (C) 2012-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#ifndef ARCH_LED_H
-#define ARCH_LED_H
-
-#include <config.h>
-
-#define LED_CHAR_0	0x7e
-#define LED_CHAR_1	0x0c
-#define LED_CHAR_2	0xb6
-#define LED_CHAR_3	0x9e
-#define LED_CHAR_4	0xcc
-#define LED_CHAR_5	0xda
-#define LED_CHAR_6	0xfa
-#define LED_CHAR_7	0x4e
-#define LED_CHAR_8	0xfe
-#define LED_CHAR_9	0xde
-
-#define LED_CHAR_A	0xee
-#define LED_CHAR_B	0xf8
-#define LED_CHAR_C	0x72
-#define LED_CHAR_D	0xbc
-#define LED_CHAR_E	0xf2
-#define LED_CHAR_F	0xe2
-#define LED_CHAR_G	0x7a
-#define LED_CHAR_H	0xe8
-#define LED_CHAR_I	0x08
-#define LED_CHAR_J	0x3c
-#define LED_CHAR_K	0xea
-#define LED_CHAR_L	0x70
-#define LED_CHAR_M	0x6e
-#define LED_CHAR_N	0xa8
-#define LED_CHAR_O	0xb8
-#define LED_CHAR_P	0xe6
-#define LED_CHAR_Q	0xce
-#define LED_CHAR_R	0xa0
-#define LED_CHAR_S	0xc8
-#define LED_CHAR_T	0x8c
-#define LED_CHAR_U	0x7c
-#define LED_CHAR_V	0x54
-#define LED_CHAR_W	0xfc
-#define LED_CHAR_X	0xec
-#define LED_CHAR_Y	0xdc
-#define LED_CHAR_Z	0xa4
-
-#define LED_CHAR_SPACE	0x00
-#define LED_CHAR_DOT	0x01
-
-#define LED_CHAR_	(LED_CHAR_SPACE)
-
-/** Macro to translate 4 characters into integer to display led */
-#define LED_C2I(C0, C1, C2, C3)			\
-	(~(					\
-		(LED_CHAR_##C0 << 24) |		\
-		(LED_CHAR_##C1 << 16) |		\
-		(LED_CHAR_##C2 <<  8) |		\
-		(LED_CHAR_##C3)			\
-	))
-
-#if defined(CONFIG_SUPPORT_CARD_LED_BASE)
-
-#define LED_ADDR    CONFIG_SUPPORT_CARD_LED_BASE
-
-#ifdef __ASSEMBLY__
-
-#define led_write(C0, C1, C2, C3)  raw_led_write LED_C2I(C0, C1, C2, C3)
-.macro raw_led_write data
-	ldr r0, =\data
-	ldr r1, =LED_ADDR
-	str r0, [r1]
-.endm
-
-#else /* __ASSEMBLY__ */
-
-#include <linux/io.h>
-
-#define led_write(C0, C1, C2, C3)		\
-do {						\
-	raw_led_write(LED_C2I(C0, C1, C2, C3));	\
-} while (0)
-
-static inline void raw_led_write(u32 data)
-{
-	writel(data, LED_ADDR);
-}
-
-#endif /* __ASSEMBLY__ */
-
-#else /* CONFIG_SUPPORT_CARD_LED_BASE */
-
-#define led_write(C0, C1, C2, C3)
-#define raw_led_write(x)
-
-#endif /* CONFIG_SUPPORT_CARD_LED_BASE */
-
-#endif /* ARCH_LED_H */

arch/arm/mach-uniphier/include/mach/micro-support-card.h

@@ -12,6 +12,7 @@ void support_card_reset(void);
 void support_card_init(void);
 void support_card_late_init(void);
 int check_support_card(void);
+void led_puts(const char *s);
 #else
 static inline void support_card_reset(void)
 {
@@ -29,6 +30,10 @@ static inline int check_support_card(void)
 {
 	return 0;
 }
+
+static inline void led_puts(const char *s)
+{
+}
 #endif
 
 #endif /* ARCH_BOARD_H */

arch/arm/mach-uniphier/lowlevel_init.S

@@ -8,7 +8,6 @@
 #include <linux/linkage.h>
 #include <linux/sizes.h>
 #include <asm/system.h>
-#include <mach/led.h>
 #include <mach/arm-mpcore.h>
 #include <mach/sbc-regs.h>
 #include <mach/ssc-regs.h>

arch/arm/mach-uniphier/print_misc_info.c

@@ -5,7 +5,7 @@
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
-#include <mach/board.h>
+#include <mach/micro-support-card.h>
 
 int misc_init_f(void)
 {

arch/arm/mach-uniphier/spl.c

@@ -7,8 +7,7 @@
 #include <common.h>
 #include <spl.h>
 #include <linux/compiler.h>
-#include <mach/led.h>
-#include <mach/board.h>
+#include <mach/micro-support-card.h>
 
 void __weak bcu_init(void)
 {
@@ -46,25 +45,25 @@ void spl_board_init(void)
 
 	support_card_init();
 
-	led_write(L, 0, , );
+	led_puts("L0");
 
 	memconf_init();
 
-	led_write(L, 1, , );
+	led_puts("L1");
 
 	early_clkrst_init();
 
-	led_write(L, 2, , );
+	led_puts("L2");
 
 	early_pin_init();
 
-	led_write(L, 3, , );
+	led_puts("L3");
 
 #ifdef CONFIG_SPL_SERIAL_SUPPORT
 	preloader_console_init();
 #endif
 
-	led_write(L, 4, , );
+	led_puts("L4");
 
 	{
 		int res;
@@ -75,9 +74,10 @@ void spl_board_init(void)
 				;
 		}
 	}
-	led_write(L, 5, , );
+
+	led_puts("L5");
 
 	enable_dpll_ssc();
 
-	led_write(L, 6, , );
+	led_puts("L6");
 }

arch/arm/mach-uniphier/support_card.c

@@ -5,8 +5,9 @@
  */
 
 #include <common.h>
+#include <linux/ctype.h>
 #include <linux/io.h>
-#include <mach/board.h>
+#include <mach/micro-support-card.h>
 
 #define MICRO_SUPPORT_CARD_RESET	\
 				((CONFIG_SUPPORT_CARD_BASE) + 0x000D0034)
@@ -155,3 +156,73 @@ void support_card_late_init(void)
 {
 	detect_num_flash_banks();
 }
+
+static const u8 ledval_num[] = {
+	0x7e, /* 0 */
+	0x0c, /* 1 */
+	0xb6, /* 2 */
+	0x9e, /* 3 */
+	0xcc, /* 4 */
+	0xda, /* 5 */
+	0xfa, /* 6 */
+	0x4e, /* 7 */
+	0xfe, /* 8 */
+	0xde, /* 9 */
+};
+
+static const u8 ledval_alpha[] = {
+	0xee, /* A */
+	0xf8, /* B */
+	0x72, /* C */
+	0xbc, /* D */
+	0xf2, /* E */
+	0xe2, /* F */
+	0x7a, /* G */
+	0xe8, /* H */
+	0x08, /* I */
+	0x3c, /* J */
+	0xea, /* K */
+	0x70, /* L */
+	0x6e, /* M */
+	0xa8, /* N */
+	0xb8, /* O */
+	0xe6, /* P */
+	0xce, /* Q */
+	0xa0, /* R */
+	0xc8, /* S */
+	0x8c, /* T */
+	0x7c, /* U */
+	0x54, /* V */
+	0xfc, /* W */
+	0xec, /* X */
+	0xdc, /* Y */
+	0xa4, /* Z */
+};
+
+static u8 char2ledval(char c)
+{
+	if (isdigit(c))
+		return ledval_num[c - '0'];
+	else if (isalpha(c))
+		return ledval_alpha[toupper(c) - 'A'];
+
+	return 0;
+}
+
+void led_puts(const char *s)
+{
+	int i;
+	u32 val = 0;
+
+	if (!s)
+		return;
+
+	for (i = 0; i < 4; i++) {
+		val <<= 8;
+		val |= char2ledval(*s);
+		if (*s != '\0')
+			s++;
+	}
+
+	writel(~val, CONFIG_SUPPORT_CARD_LED_BASE);
+}