samples: move auxdisplay example code from Documentation

Move auxdisplay examples to samples and remove it from Documentation
Makefile. Create a new Makefile to build auxdisplay. It can be built
from top level directory or from auxdisplay directory:

Run make -C samples/auxdisplay or cd samples/auxdisplay; make

Acked-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

4 files changed, 1 insertions, 290 deletions

diff --git a/Documentation/auxdisplay/.gitignore b/Documentation/auxdisplay/.gitignore
deleted file mode 100644
index 7af222860a96..000000000000
--- a/Documentation/auxdisplay/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-cfag12864b-example
diff --git a/Documentation/auxdisplay/Makefile b/Documentation/auxdisplay/Makefile
deleted file mode 100644
index ada4dac99ef4..000000000000
--- a/Documentation/auxdisplay/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
-# List of programs to build
-hostprogs-y := cfag12864b-example
-
-# Tell kbuild to always build the programs
-always := $(hostprogs-y)
-
-HOSTCFLAGS_cfag12864b-example.o += -I$(objtree)/usr/include
diff --git a/Documentation/auxdisplay/cfag12864b b/Documentation/auxdisplay/cfag12864b
index eb7be393a510..12fd51b8de75 100644
--- a/Documentation/auxdisplay/cfag12864b
+++ b/Documentation/auxdisplay/cfag12864b
@@ -101,5 +101,5 @@ Although the LCD won't get updated until the next refresh time arrives.
 Also, you can mmap the framebuffer: open & mmap, munmap & close...
 which is the best option for most uses.
 
-Check Documentation/auxdisplay/cfag12864b-example.c
+Check samples/auxdisplay/cfag12864b-example.c
 for a real working userspace complete program with usage examples.
diff --git a/Documentation/auxdisplay/cfag12864b-example.c b/Documentation/auxdisplay/cfag12864b-example.c
deleted file mode 100644
index e7823ffb1ca0..000000000000
--- a/Documentation/auxdisplay/cfag12864b-example.c
+++ /dev/null
@@ -1,281 +0,0 @@
-/*
- *    Filename: cfag12864b-example.c
- *     Version: 0.1.0
- * Description: cfag12864b LCD userspace example program
- *     License: GPLv2
- *
- *      Author: Copyright (C) Miguel Ojeda Sandonis
- *        Date: 2006-10-31
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License version 2 as
- *  published by the Free Software Foundation.
- *
- *  This program is distributed in the hope that 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.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
- */
-
-/*
- * ------------------------
- * start of cfag12864b code
- * ------------------------
- */
-
-#include <string.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/mman.h>
-
-#define CFAG12864B_WIDTH		(128)
-#define CFAG12864B_HEIGHT		(64)
-#define CFAG12864B_SIZE			(128 * 64 / 8)
-#define CFAG12864B_BPB			(8)
-#define CFAG12864B_ADDRESS(x, y)	((y) * CFAG12864B_WIDTH / \
-					CFAG12864B_BPB + (x) / CFAG12864B_BPB)
-#define CFAG12864B_BIT(n)		(((unsigned char) 1) << (n))
-
-#undef CFAG12864B_DOCHECK
-#ifdef CFAG12864B_DOCHECK
-	#define CFAG12864B_CHECK(x, y)		((x) < CFAG12864B_WIDTH && \
-						(y) < CFAG12864B_HEIGHT)
-#else
-	#define CFAG12864B_CHECK(x, y)		(1)
-#endif
-
-int cfag12864b_fd;
-unsigned char * cfag12864b_mem;
-unsigned char cfag12864b_buffer[CFAG12864B_SIZE];
-
-/*
- * init a cfag12864b framebuffer device
- *
- * No error:       return = 0
- * Unable to open: return = -1
- * Unable to mmap: return = -2
- */
-static int cfag12864b_init(char *path)
-{
-	cfag12864b_fd = open(path, O_RDWR);
-	if (cfag12864b_fd == -1)
-		return -1;
-
-	cfag12864b_mem = mmap(0, CFAG12864B_SIZE, PROT_READ | PROT_WRITE,
-		MAP_SHARED, cfag12864b_fd, 0);
-	if (cfag12864b_mem == MAP_FAILED) {
-		close(cfag12864b_fd);
-		return -2;
-	}
-
-	return 0;
-}
-
-/*
- * exit a cfag12864b framebuffer device
- */
-static void cfag12864b_exit(void)
-{
-	munmap(cfag12864b_mem, CFAG12864B_SIZE);
-	close(cfag12864b_fd);
-}
-
-/*
- * set (x, y) pixel
- */
-static void cfag12864b_set(unsigned char x, unsigned char y)
-{
-	if (CFAG12864B_CHECK(x, y))
-		cfag12864b_buffer[CFAG12864B_ADDRESS(x, y)] |=
-			CFAG12864B_BIT(x % CFAG12864B_BPB);
-}
-
-/*
- * unset (x, y) pixel
- */
-static void cfag12864b_unset(unsigned char x, unsigned char y)
-{
-	if (CFAG12864B_CHECK(x, y))
-		cfag12864b_buffer[CFAG12864B_ADDRESS(x, y)] &=
-			~CFAG12864B_BIT(x % CFAG12864B_BPB);
-}
-
-/*
- * is set (x, y) pixel?
- *
- * Pixel off: return = 0
- * Pixel on:  return = 1
- */
-static unsigned char cfag12864b_isset(unsigned char x, unsigned char y)
-{
-	if (CFAG12864B_CHECK(x, y))
-		if (cfag12864b_buffer[CFAG12864B_ADDRESS(x, y)] &
-			CFAG12864B_BIT(x % CFAG12864B_BPB))
-			return 1;
-
-	return 0;
-}
-
-/*
- * not (x, y) pixel
- */
-static void cfag12864b_not(unsigned char x, unsigned char y)
-{
-	if (cfag12864b_isset(x, y))
-		cfag12864b_unset(x, y);
-	else
-		cfag12864b_set(x, y);
-}
-
-/*
- * fill (set all pixels)
- */
-static void cfag12864b_fill(void)
-{
-	unsigned short i;
-
-	for (i = 0; i < CFAG12864B_SIZE; i++)
-		cfag12864b_buffer[i] = 0xFF;
-}
-
-/*
- * clear (unset all pixels)
- */
-static void cfag12864b_clear(void)
-{
-	unsigned short i;
-
-	for (i = 0; i < CFAG12864B_SIZE; i++)
-		cfag12864b_buffer[i] = 0;
-}
-
-/*
- * format a [128*64] matrix
- *
- * Pixel off: src[i] = 0
- * Pixel on:  src[i] > 0
- */
-static void cfag12864b_format(unsigned char * matrix)
-{
-	unsigned char i, j, n;
-
-	for (i = 0; i < CFAG12864B_HEIGHT; i++)
-	for (j = 0; j < CFAG12864B_WIDTH / CFAG12864B_BPB; j++) {
-		cfag12864b_buffer[i * CFAG12864B_WIDTH / CFAG12864B_BPB +
-			j] = 0;
-		for (n = 0; n < CFAG12864B_BPB; n++)
-			if (matrix[i * CFAG12864B_WIDTH +
-				j * CFAG12864B_BPB + n])
-				cfag12864b_buffer[i * CFAG12864B_WIDTH /
-					CFAG12864B_BPB + j] |=
-					CFAG12864B_BIT(n);
-	}
-}
-
-/*
- * blit buffer to lcd
- */
-static void cfag12864b_blit(void)
-{
-	memcpy(cfag12864b_mem, cfag12864b_buffer, CFAG12864B_SIZE);
-}
-
-/*
- * ----------------------
- * end of cfag12864b code
- * ----------------------
- */
-
-#include <stdio.h>
-
-#define EXAMPLES	6
-
-static void example(unsigned char n)
-{
-	unsigned short i, j;
-	unsigned char matrix[CFAG12864B_WIDTH * CFAG12864B_HEIGHT];
-
-	if (n > EXAMPLES)
-		return;
-
-	printf("Example %i/%i - ", n, EXAMPLES);
-
-	switch (n) {
-	case 1:
-		printf("Draw points setting bits");
-		cfag12864b_clear();
-		for (i = 0; i < CFAG12864B_WIDTH; i += 2)
-			for (j = 0; j < CFAG12864B_HEIGHT; j += 2)
-				cfag12864b_set(i, j);
-		break;
-
-	case 2:
-		printf("Clear the LCD");
-		cfag12864b_clear();
-		break;
-
-	case 3:
-		printf("Draw rows formatting a [128*64] matrix");
-		memset(matrix, 0, CFAG12864B_WIDTH * CFAG12864B_HEIGHT);
-		for (i = 0; i < CFAG12864B_WIDTH; i++)
-			for (j = 0; j < CFAG12864B_HEIGHT; j += 2)
-				matrix[j * CFAG12864B_WIDTH + i] = 1;
-		cfag12864b_format(matrix);
-		break;
-
-	case 4:
-		printf("Fill the lcd");
-		cfag12864b_fill();
-		break;
-
-	case 5:
-		printf("Draw columns unsetting bits");
-		for (i = 0; i < CFAG12864B_WIDTH; i += 2)
-			for (j = 0; j < CFAG12864B_HEIGHT; j++)
-				cfag12864b_unset(i, j);
-		break;
-
-	case 6:
-		printf("Do negative not-ing all bits");
-		for (i = 0; i < CFAG12864B_WIDTH; i++)
-			for (j = 0; j < CFAG12864B_HEIGHT; j ++)
-				cfag12864b_not(i, j);
-		break;
-	}
-
-	puts(" - [Press Enter]");
-}
-
-int main(int argc, char *argv[])
-{
-	unsigned char n;
-
-	if (argc != 2) {
-		printf(
-			"Sintax:  %s fbdev\n"
-			"Usually: /dev/fb0, /dev/fb1...\n", argv[0]);
-		return -1;
-	}
-
-	if (cfag12864b_init(argv[1])) {
-		printf("Can't init %s fbdev\n", argv[1]);
-		return -2;
-	}
-
-	for (n = 1; n <= EXAMPLES; n++) {
-		example(n);
-		cfag12864b_blit();
-		while (getchar() != '\n');
-	}
-
-	cfag12864b_exit();
-
-	return 0;
-}