cpia2: use request_firmware()
David Woodhouse [Mon, 23 Jun 2008 10:36:23 +0000 (11:36 +0100)]
Thanks for Jaswinder Singh for converting the firmware blob itself to ihex.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

drivers/media/video/cpia2/cpia2_core.c
drivers/media/video/cpia2/cpia2patch.h [deleted file]
firmware/Makefile
firmware/WHENCE
firmware/cpia2/stv0672_vp4.bin.ihex [new file with mode: 0644]

index c8b9fdb..f2e8b1c 100644 (file)
 
 #include <linux/slab.h>
 #include <linux/vmalloc.h>
+#include <linux/firmware.h>
 
 /* #define _CPIA2_DEBUG_ */
 
-#include "cpia2patch.h"
-
 #ifdef _CPIA2_DEBUG_
 
 static const char *block_name[] = {
@@ -893,24 +892,53 @@ int cpia2_set_low_power(struct camera_data *cam)
  *  apply_vp_patch
  *
  *****************************************************************************/
+static int cpia2_send_onebyte_command(struct camera_data *cam,
+                                     struct cpia2_command *cmd,
+                                     u8 start, u8 datum)
+{
+       cmd->buffer.block_data[0] = datum;
+       cmd->start = start;
+       cmd->reg_count = 1;
+       return cpia2_send_command(cam, cmd);
+}
+
 static int apply_vp_patch(struct camera_data *cam)
 {
-       int i, j;
+       const struct firmware *fw;
+       const char fw_name[] = "cpia2/stv0672_vp4.bin";
+       int i, ret;
        struct cpia2_command cmd;
 
+       ret = request_firmware(&fw, fw_name, &cam->dev->dev);
+       if (ret) {
+               printk(KERN_ERR "cpia2: failed to load VP patch \"%s\"\n",
+                      fw_name);
+               return ret;
+       }
+
        cmd.req_mode = CAMERAACCESS_TYPE_REPEAT | CAMERAACCESS_VP;
        cmd.direction = TRANSFER_WRITE;
 
-       for (i = 0; i < PATCH_DATA_SIZE; i++) {
-               for (j = 0; j < patch_data[i].count; j++) {
-                       cmd.buffer.block_data[j] = patch_data[i].data[j];
-               }
+       /* First send the start address... */
+       cpia2_send_onebyte_command(cam, &cmd, 0x0A, fw->data[0]); /* hi */
+       cpia2_send_onebyte_command(cam, &cmd, 0x0B, fw->data[1]); /* lo */
 
-               cmd.start = patch_data[i].reg;
-               cmd.reg_count = patch_data[i].count;
+       /* ... followed by the data payload */
+       for (i = 2; i < fw->size; i += 64) {
+               cmd.start = 0x0C; /* Data */
+               cmd.reg_count = min_t(int, 64, fw->size - i);
+               memcpy(cmd.buffer.block_data, &fw->data[i], cmd.reg_count);
                cpia2_send_command(cam, &cmd);
        }
 
+       /* Next send the start address... */
+       cpia2_send_onebyte_command(cam, &cmd, 0x0A, fw->data[0]); /* hi */
+       cpia2_send_onebyte_command(cam, &cmd, 0x0B, fw->data[1]); /* lo */
+
+       /* ... followed by the 'goto' command */
+       cpia2_send_onebyte_command(cam, &cmd, 0x0D, 1);
+
+       release_firmware(fw);
        return 0;
 }
 
diff --git a/drivers/media/video/cpia2/cpia2patch.h b/drivers/media/video/cpia2/cpia2patch.h
deleted file mode 100644 (file)
index 7f085fb..0000000
+++ /dev/null
@@ -1,233 +0,0 @@
-/****************************************************************************
- *
- *  Filename: cpia2patch.h
- *
- *  Copyright 2001, STMicrolectronics, Inc.
- *
- *  Contact:  steve.miller@st.com
- *
- *  Description:
- *     This file contains patch data for the CPiA2 (stv0672) VP4.
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- ****************************************************************************/
-
-#ifndef CPIA2_PATCH_HEADER
-#define CPIA2_PATCH_HEADER
-
-typedef struct {
-       unsigned char reg;
-       unsigned char count;
-       const unsigned char *data;
-} cpia2_patch;
-
-static const unsigned char start_address_hi[1] = {
-       0x01
-};
-
-static const unsigned char start_address_lo[1] = {
-       0xBC
-};
-
-static const unsigned char patch_block0[64] = {
-       0xE3, 0x02, 0xE3, 0x03, 0xE3, 0x04, 0xE3, 0x05,
-       0xE3, 0x06, 0xE3, 0x07, 0x93, 0x44, 0x56, 0xD4,
-       0x93, 0x4E, 0x56, 0x51, 0x93, 0x4E, 0x51, 0xD6,
-       0x93, 0x4E, 0x4F, 0x54, 0x93, 0x4E, 0x92, 0x4F,
-       0x92, 0xA4, 0x93, 0x05, 0x92, 0xF4, 0x93, 0x1B,
-       0x92, 0x92, 0x91, 0xE6, 0x92, 0x36, 0x92, 0x74,
-       0x92, 0x4A, 0x92, 0x8C, 0x92, 0x8E, 0xC8, 0xD0,
-       0x0B, 0x42, 0x02, 0xA0, 0xCA, 0x92, 0x09, 0x02
-};
-
-static const unsigned char patch_block1[64] = {
-       0xC9, 0x10, 0x0A, 0x0A, 0x0A, 0x81, 0xE3, 0xB8,
-       0xE3, 0xB0, 0xE3, 0xA8, 0xE3, 0xA0, 0xE3, 0x98,
-       0xE3, 0x90, 0xE1, 0x00, 0xCF, 0xD7, 0x0A, 0x12,
-       0xCC, 0x95, 0x08, 0xB2, 0x0A, 0x18, 0xE1, 0x00,
-       0x01, 0xEE, 0x0C, 0x08, 0x4A, 0x12, 0xC8, 0x18,
-       0xF0, 0x9A, 0xC0, 0x22, 0xF3, 0x1C, 0x4A, 0x13,
-       0xF3, 0x14, 0xC8, 0xA0, 0xF2, 0x14, 0xF2, 0x1C,
-       0xEB, 0x13, 0xD3, 0xA2, 0x63, 0x16, 0x48, 0x9E
-};
-
-static const unsigned char patch_block2[64] = {
-       0xF0, 0x18, 0xA4, 0x03, 0xF3, 0x93, 0xC0, 0x58,
-       0xF7, 0x13, 0x51, 0x9C, 0xE9, 0x20, 0xCF, 0xEF,
-       0x63, 0xF9, 0x92, 0x2E, 0xD3, 0x5F, 0x63, 0xFA,
-       0x92, 0x2E, 0xD3, 0x67, 0x63, 0xFB, 0x92, 0x2E,
-       0xD3, 0x6F, 0xE9, 0x1A, 0x63, 0x16, 0x48, 0xA7,
-       0xF0, 0x20, 0xA4, 0x06, 0xF3, 0x94, 0xC0, 0x27,
-       0xF7, 0x14, 0xF5, 0x13, 0x51, 0x9D, 0xF6, 0x13,
-       0x63, 0x18, 0xC4, 0x20, 0xCB, 0xEF, 0x63, 0xFC
-};
-
-static const unsigned char patch_block3[64] = {
-       0x92, 0x2E, 0xD3, 0x77, 0x63, 0xFD, 0x92, 0x2E,
-       0xD3, 0x7F, 0x63, 0xFE, 0x92, 0x2E, 0xD3, 0x87,
-       0x63, 0xFF, 0x92, 0x2E, 0xD3, 0x8F, 0x64, 0x38,
-       0x92, 0x2E, 0xD3, 0x97, 0x64, 0x39, 0x92, 0x2E,
-       0xD3, 0x9F, 0xE1, 0x00, 0xF5, 0x3A, 0xF4, 0x3B,
-       0xF7, 0xBF, 0xF2, 0xBC, 0xF2, 0x3D, 0xE1, 0x00,
-       0x80, 0x87, 0x90, 0x80, 0x51, 0xD5, 0x02, 0x22,
-       0x02, 0x32, 0x4B, 0xD3, 0xF7, 0x11, 0x0B, 0xDA
-};
-
-static const unsigned char patch_block4[64] = {
-       0xE1, 0x00, 0x0E, 0x02, 0x02, 0x40, 0x0D, 0xB5,
-       0xE3, 0x02, 0x48, 0x55, 0xE5, 0x12, 0xA4, 0x01,
-       0xE8, 0x1B, 0xE3, 0x90, 0xF0, 0x18, 0xA4, 0x01,
-       0xE8, 0xBF, 0x8D, 0xB8, 0x4B, 0xD1, 0x4B, 0xD8,
-       0x0B, 0xCB, 0x0B, 0xC2, 0xE1, 0x00, 0xE3, 0x02,
-       0xE3, 0x03, 0x52, 0xD3, 0x60, 0x59, 0xE6, 0x93,
-       0x0D, 0x22, 0x52, 0xD4, 0xE6, 0x93, 0x0D, 0x2A,
-       0xE3, 0x98, 0xE3, 0x90, 0xE1, 0x00, 0x02, 0x5D
-};
-
-static const unsigned char patch_block5[64] = {
-       0x02, 0x63, 0xE3, 0x02, 0xC8, 0x12, 0x02, 0xCA,
-       0xC8, 0x52, 0x02, 0xC2, 0x82, 0x68, 0xE3, 0x02,
-       0xC8, 0x14, 0x02, 0xCA, 0xC8, 0x90, 0x02, 0xC2,
-       0x0A, 0xD0, 0xC9, 0x93, 0x0A, 0xDA, 0xCC, 0xD2,
-       0x0A, 0xE2, 0x63, 0x12, 0x02, 0xDA, 0x0A, 0x98,
-       0x0A, 0xA0, 0x0A, 0xA8, 0xE3, 0x90, 0xE1, 0x00,
-       0xE3, 0x02, 0x0A, 0xD0, 0xC9, 0x93, 0x0A, 0xDA,
-       0xCC, 0xD2, 0x0A, 0xE2, 0x63, 0x12, 0x02, 0xDA
-};
-
-static const unsigned char patch_block6[64] = {
-       0x0A, 0x98, 0x0A, 0xA0, 0x0A, 0xA8, 0x49, 0x91,
-       0xE5, 0x6A, 0xA4, 0x04, 0xC8, 0x12, 0x02, 0xCA,
-       0xC8, 0x52, 0x82, 0x89, 0xC8, 0x14, 0x02, 0xCA,
-       0xC8, 0x90, 0x02, 0xC2, 0xE3, 0x90, 0xE1, 0x00,
-       0x08, 0x60, 0xE1, 0x00, 0x48, 0x53, 0xE8, 0x97,
-       0x08, 0x5A, 0xE1, 0x00, 0xE3, 0x02, 0xE3, 0x03,
-       0x54, 0xD3, 0x60, 0x59, 0xE6, 0x93, 0x0D, 0x52,
-       0xE3, 0x98, 0xE3, 0x90, 0xE1, 0x00, 0x02, 0x9C
-};
-
-static const unsigned char patch_block7[64] = {
-       0xE3, 0x02, 0x55, 0x13, 0x93, 0x17, 0x55, 0x13,
-       0x93, 0x17, 0xE3, 0x90, 0xE1, 0x00, 0x75, 0x30,
-       0xE3, 0x02, 0xE3, 0x03, 0x55, 0x55, 0x60, 0x59,
-       0xE6, 0x93, 0x0D, 0xB2, 0xE3, 0x98, 0xE3, 0x90,
-       0xE1, 0x00, 0x02, 0xAE, 0xE7, 0x92, 0xE9, 0x18,
-       0xEA, 0x9A, 0xE8, 0x98, 0xE8, 0x10, 0xE8, 0x11,
-       0xE8, 0x51, 0xD2, 0xDA, 0xD2, 0xF3, 0xE8, 0x13,
-       0xD2, 0xFA, 0xE8, 0x50, 0xD2, 0xEA, 0xE8, 0xD0
-};
-
-static const unsigned char patch_block8[64] = {
-       0xE8, 0xD1, 0xD3, 0x0A, 0x03, 0x09, 0x48, 0x23,
-       0xE5, 0x2C, 0xA0, 0x03, 0x48, 0x24, 0xEA, 0x1C,
-       0x03, 0x08, 0xD2, 0xE3, 0xD3, 0x03, 0xD3, 0x13,
-       0xE1, 0x00, 0x02, 0xCB, 0x05, 0x93, 0x57, 0x93,
-       0xF0, 0x9A, 0xAC, 0x0B, 0xE3, 0x07, 0x92, 0xEA,
-       0xE2, 0x9F, 0xE5, 0x06, 0xE3, 0xB0, 0xA0, 0x02,
-       0xEB, 0x1E, 0x82, 0xD7, 0xEA, 0x1E, 0xE2, 0x3B,
-       0x85, 0x9B, 0xE9, 0x1E, 0xC8, 0x90, 0x85, 0x94
-};
-
-static const unsigned char patch_block9[64] = {
-       0x02, 0xDE, 0x05, 0x80, 0x57, 0x93, 0xF0, 0xBA,
-       0xAC, 0x06, 0x92, 0xEA, 0xE2, 0xBF, 0xE5, 0x06,
-       0xA0, 0x01, 0xEB, 0xBF, 0x85, 0x88, 0xE9, 0x3E,
-       0xC8, 0x90, 0x85, 0x81, 0xE9, 0x3E, 0xF0, 0xBA,
-       0xF3, 0x39, 0xF0, 0x3A, 0x60, 0x17, 0xF0, 0x3A,
-       0xC0, 0x90, 0xF0, 0xBA, 0xE1, 0x00, 0x00, 0x3F,
-       0xE3, 0x02, 0xE3, 0x03, 0x58, 0x10, 0x60, 0x59,
-       0xE6, 0x93, 0x0D, 0xA2, 0x58, 0x12, 0xE6, 0x93
-};
-
-static const unsigned char patch_block10[64] = {
-       0x0D, 0xAA, 0xE3, 0x98, 0xE3, 0x90, 0xE1, 0x00,
-       0x03, 0x01, 0xE1, 0x00, 0x03, 0x03, 0x9B, 0x7D,
-       0x8B, 0x8B, 0xE3, 0x02, 0xE3, 0x03, 0x58, 0x56,
-       0x60, 0x59, 0xE6, 0x93, 0x0D, 0xBA, 0xE3, 0x98,
-       0xE3, 0x90, 0xE1, 0x00, 0x03, 0x0F, 0x93, 0x11,
-       0xE1, 0x00, 0xE3, 0x02, 0x4A, 0x11, 0x0B, 0x42,
-       0x91, 0xAF, 0xE3, 0x90, 0xE1, 0x00, 0xF2, 0x91,
-       0xF0, 0x91, 0xA3, 0xFE, 0xE1, 0x00, 0x60, 0x92
-};
-
-static const unsigned char patch_block11[64] = {
-       0xC0, 0x5F, 0xF0, 0x13, 0xF0, 0x13, 0x59, 0x5B,
-       0xE2, 0x13, 0xF0, 0x11, 0x5A, 0x19, 0xE2, 0x13,
-       0xE1, 0x00, 0x00, 0x00, 0x03, 0x27, 0x68, 0x61,
-       0x76, 0x61, 0x6E, 0x61, 0x00, 0x06, 0x03, 0x2C,
-       0xE3, 0x02, 0xE3, 0x03, 0xE9, 0x38, 0x59, 0x15,
-       0x59, 0x5A, 0xF2, 0x9A, 0xBC, 0x0B, 0xA4, 0x0A,
-       0x59, 0x1E, 0xF3, 0x11, 0xF0, 0x1A, 0xE2, 0xBB,
-       0x59, 0x15, 0xF0, 0x11, 0x19, 0x2A, 0xE5, 0x02
-};
-
-static const unsigned char patch_block12[54] = {
-       0xA4, 0x01, 0xEB, 0xBF, 0xE3, 0x98, 0xE3, 0x90,
-       0xE1, 0x00, 0x03, 0x42, 0x19, 0x28, 0xE1, 0x00,
-       0xE9, 0x30, 0x60, 0x79, 0xE1, 0x00, 0xE3, 0x03,
-       0xE3, 0x07, 0x60, 0x79, 0x93, 0x4E, 0xE3, 0xB8,
-       0xE3, 0x98, 0xE1, 0x00, 0xE9, 0x1A, 0xF0, 0x1F,
-       0xE2, 0x33, 0xF0, 0x91, 0xE2, 0x92, 0xE0, 0x32,
-       0xF0, 0x31, 0xE1, 0x00, 0x00, 0x00
-};
-
-static const unsigned char do_call[1] = {
-       0x01
-};
-
-
-#define PATCH_DATA_SIZE 18
-
-static const cpia2_patch patch_data[PATCH_DATA_SIZE] = {
-       {0x0A, sizeof(start_address_hi), start_address_hi}
-       ,                       // 0
-       {0x0B, sizeof(start_address_lo), start_address_lo}
-       ,                       // 1
-       {0x0C, sizeof(patch_block0), patch_block0}
-       ,                       // 2
-       {0x0C, sizeof(patch_block1), patch_block1}
-       ,                       // 3
-       {0x0C, sizeof(patch_block2), patch_block2}
-       ,                       // 4
-       {0x0C, sizeof(patch_block3), patch_block3}
-       ,                       // 5
-       {0x0C, sizeof(patch_block4), patch_block4}
-       ,                       // 6
-       {0x0C, sizeof(patch_block5), patch_block5}
-       ,                       // 7
-       {0x0C, sizeof(patch_block6), patch_block6}
-       ,                       // 8
-       {0x0C, sizeof(patch_block7), patch_block7}
-       ,                       // 9
-       {0x0C, sizeof(patch_block8), patch_block8}
-       ,                       // 10
-       {0x0C, sizeof(patch_block9), patch_block9}
-       ,                       //11
-       {0x0C, sizeof(patch_block10), patch_block10}
-       ,                       // 12
-       {0x0C, sizeof(patch_block11), patch_block11}
-       ,                       // 13
-       {0x0C, sizeof(patch_block12), patch_block12}
-       ,                       // 14
-       {0x0A, sizeof(start_address_hi), start_address_hi}
-       ,                       // 15
-       {0x0B, sizeof(start_address_lo), start_address_lo}
-       ,                       // 16
-       {0x0D, sizeof(do_call), do_call}        //17
-};
-
-
-#endif
index 2f81089..8d5465f 100644 (file)
@@ -60,6 +60,7 @@ fw-shipped-$(CONFIG_USB_SERIAL_WHITEHEAT) += whiteheat_loader.fw whiteheat.fw \
                                           # whiteheat_loader_debug.fw
 fw-shipped-$(CONFIG_USB_SERIAL_KEYSPAN_PDA) += keyspan_pda/keyspan_pda.fw
 fw-shipped-$(CONFIG_USB_SERIAL_XIRCOM) += keyspan_pda/xircom_pgs.fw
+fw-shipped-$(CONFIG_VIDEO_CPIA2) += cpia2/stv0672_vp4.bin
 
 fw-shipped-all := $(fw-shipped-y) $(fw-shipped-m) $(fw-shipped-)
 
index 6c7b0b4..d8f6199 100644 (file)
@@ -236,3 +236,16 @@ Licence: Unknown
 Found in hex form in kernel source.
 
 --------------------------------------------------------------------------
+
+Driver: CPiA2 -- cameras based on Vision's CPiA2
+
+File: cpia2/stv0672_vp4.bin
+
+Licence: Allegedly GPLv2+, but no source visible. Marked:
+       Copyright (C) 2001 STMicroelectronics, Inc.
+       Contact:  steve.miller@st.com
+       Description: This file contains patch data for the CPiA2 (stv0672) VP4.
+
+Found in hex form in kernel source.
+
+--------------------------------------------------------------------------
diff --git a/firmware/cpia2/stv0672_vp4.bin.ihex b/firmware/cpia2/stv0672_vp4.bin.ihex
new file mode 100644 (file)
index 0000000..bd0b9cf
--- /dev/null
@@ -0,0 +1,73 @@
+:1000000001BCE302E303E304E305E306E3079344EF
+:1000100056D4934E5651934E51D6934E4F54934EC1
+:10002000924F92A4930592F4931B929291E692368A
+:100030009274924A928C928EC8D00B4202A0CA92BD
+:100040000902C9100A0A0A81E3B8E3B0E3A8E3A0F1
+:10005000E398E390E100CFD70A12CC9508B20A18D2
+:10006000E10001EE0C084A12C818F09AC022F31CF5
+:100070004A13F314C8A0F214F21CEB13D3A26316B4
+:10008000489EF018A403F393C058F713519CE9203D
+:10009000CFEF63F9922ED35F63FA922ED36763FB9F
+:1000A000922ED36FE91A631648A7F020A406F394A2
+:1000B000C027F714F513519DF6136318C420CBEF36
+:1000C00063FC922ED37763FD922ED37F63FE922E34
+:1000D000D38763FF922ED38F6438922ED3976439DF
+:1000E000922ED39FE100F53AF43BF7BFF2BCF23D0C
+:1000F000E1008087908051D5022202324BD3F71164
+:100100000BDAE1000E0202400DB5E3024855E5129C
+:10011000A401E81BE390F018A401E8BF8DB84BD10F
+:100120004BD80BCB0BC2E100E302E30352D360597F
+:10013000E6930D2252D4E6930D2AE398E390E10072
+:10014000025D0263E302C81202CAC85202C2826898
+:10015000E302C81402CAC89002C20AD0C9930ADADC
+:10016000CCD20AE2631202DA0A980AA00AA8E39043
+:10017000E100E3020AD0C9930ADACCD20AE26312A0
+:1001800002DA0A980AA00AA84991E56AA404C812EA
+:1001900002CAC8528289C81402CAC89002C2E39037
+:1001A000E1000860E1004853E897085AE100E302E3
+:1001B000E30354D36059E6930D52E398E390E100D2
+:1001C000029CE3025513931755139317E390E10034
+:1001D0007530E302E30355556059E6930DB2E39899
+:1001E000E390E10002AEE792E918EA9AE898E81095
+:1001F000E811E851D2DAD2F3E813D2FAE850D2EAA1
+:10020000E8D0E8D1D30A03094823E52CA003482409
+:10021000EA1C0308D2E3D303D313E10002CB059316
+:100220005793F09AAC0BE30792EAE29FE506E3B03E
+:10023000A002EB1E82D7EA1EE23B859BE91EC89016
+:10024000859402DE05805793F0BAAC0692EAE2BFCD
+:10025000E506A001EBBF8588E93EC8908581E93EAF
+:10026000F0BAF339F03A6017F03AC090F0BAE10012
+:10027000003FE302E30358106059E6930DA25812C1
+:10028000E6930DAAE398E390E1000301E100030384
+:100290009B7D8B8BE302E30358566059E6930DBABE
+:1002A000E398E390E100030F9311E100E3024A11A8
+:1002B0000B4291AFE390E100F291F091A3FEE100D7
+:1002C0006092C05FF013F013595BE213F0115A19FA
+:1002D000E213E10000000327686176616E610006A9
+:1002E000032CE302E303E9385915595AF29ABC0B7F
+:1002F000A40A591EF311F01AE2BB5915F011192A7C
+:10030000E502A401EBBFE398E390E1000342192862
+:10031000E100E9306079E100E303E3076079934E9F
+:10032000E3B8E398E100E91AF01FE233F091E292BA
+:08033000E032F031E1000000B1
+:00000001FF
+
+  Copyright 2001, STMicrolectronics, Inc.
+  Contact:  steve.miller@st.com
+
+  Description:
+     This file contains patch data for the CPiA2 (stv0672) VP4.
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  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., 675 Mass Ave, Cambridge, MA 02139, USA.