Remove unused bcm_host.h includes, and some other unused includes. An…

…notate some includes with the symbols they come from

dma.cpp

@@ -1,15 +1,10 @@
 #ifndef KERNEL_MODULE
-#include <stdio.h>
-#include <stdlib.h>
-#include <memory.h>
-#include <inttypes.h>
-#include <syslog.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <bcm_host.h>
+#include <stdio.h> // fprintf, stderr
+#include <stdlib.h> // exit
+#include <memory.h> // memset, memcpy
+#include <inttypes.h> // uint32_t
+#include <syslog.h> // syslog
+#include <sys/mman.h> // mmap, munmap, PROT_READ, PROT_WRITE
 #endif
 
 #include "config.h"

gpu.cpp

@@ -1,10 +1,10 @@
-#include <bcm_host.h>
+#include <bcm_host.h> // bcm_host_init, bcm_host_deinit
 
-#include <linux/futex.h>
-#include <sys/syscall.h>
-#include <syslog.h>
-#include <stdio.h>
-#include <math.h>
+#include <linux/futex.h> // FUTEX_WAKE
+#include <sys/syscall.h> // SYS_futex
+#include <syslog.h> // syslog, LOG_ERR
+#include <stdio.h> // fprintf
+#include <math.h> // floor
 
 #include "config.h"
 #include "gpu.h"

keyboard.cpp

@@ -1,16 +1,7 @@
-#include <linux/input.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <memory.h>
-#include <syslog.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <sys/mman.h>
-#include <pthread.h>
-#include <errno.h>
-#include <bcm_host.h>
+#include <linux/input.h> // input_event
+#include <fcntl.h> // O_RDONLY, O_NONBLOCK
+#include <stdio.h> // printf
+#include <stdint.h> // uint64_t
 
 #include "config.h"
 #include "keyboard.h"

spi.cpp

@@ -1,15 +1,10 @@
 #ifndef KERNEL_MODULE
-#include <stdio.h>
-#include <stdlib.h>
-#include <memory.h>
-#include <syslog.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <sys/mman.h>
-#include <pthread.h>
-#include <errno.h>
-#include <bcm_host.h>
+#include <stdio.h> // printf, stderr
+#include <syslog.h> // syslog
+#include <fcntl.h> // open, O_RDWR, O_SYNC
+#include <sys/mman.h> // mmap, munmap
+#include <pthread.h> // pthread_create
+#include <bcm_host.h> // bcm_host_get_peripheral_address, bcm_host_get_peripheral_size, bcm_host_get_sdram_address
 #endif
 
 #include "config.h"