FMC: show_sdb_tree: dump synthesis/commit ID info

This completes the show_sdb_tree functionality, with the
new informative fields. The output for a verbose module is now
like this (long lines are unavoidable):

SDB: 00000651:e6a542c9 WB4-Crossbar-GSI
SDB: 0000ce42:00000601 WB-DMA.Control (00001000-0000103f)
SDB: 0000ce42:779c5443 WB-OneWire-Master (00001100-000011ff)
SDB: 0000ce42:00000603 WB-SPEC-CSR (00001200-0000121f)
SDB: 0000ce42:00000013 WB-VIC-Int.Control (00001300-000013ff)
SDB: 0000ce42:d5735ab4 WB-DMA.EIC (00001400-0000140f)
SDB: 00000651:eef0b198 WB4-Bridge-GSI (bridge: 00002000)
SDB: 00000651:e6a542c9 WB4-Crossbar-GSI
SDB: 0000ce42:123c5443 WB-I2C-Master (00003000-000030ff)
SDB: 0000ce42:e503947e WB-SPI.Control (00003100-0000311f)
SDB: 0000ce42:123c5443 WB-I2C-Master (00003200-000032ff)
SDB: 0000ce42:00000608 WB-FMC-ADC-Core (00003300-0000337f)
SDB: 0000ce42:779c5443 WB-OneWire-Master (00003400-000034ff)
SDB: 0000ce42:26ec6086 WB-FMC-ADC.EIC (00003500-0000350f)
SDB: 0000ce42:00000604 WB-Timetag-Core (00003600-0000367f)
SDB: Synthesis repository: git://ohwr.org/fmc-projects/fmc-adc-100m14b4cha.git
SDB: Bitstream 'spec_top_fmc_adcmc-projects/fmc-adc-100m14b4cha.git' \
synthesized 20140116 by mcattin (ISE version 133), commit f0a539dffe6d

Signed-off-by: Tomasz Wlostowski <[e-mail]>
Acked-by: Alessandro Rubini <[e-mail]>
Acked-by: Juan David Gonzalez Cobas <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/fmc/fmc-sdb.c

···
 }
 EXPORT_SYMBOL(fmc_reprogram);
 
+static char *__strip_trailing_space(char *buf, char *str, int len)
+{
+	int i = len - 1;
+
+	memcpy(buf, str, len);
+	while(i >= 0 && buf[i] == ' ')
+		buf[i--] = '\0';
+	return buf;
+}
+
+#define __sdb_string(buf, field) ({			\
+	BUILD_BUG_ON(sizeof(buf) < sizeof(field));	\
+	__strip_trailing_space(buf, (void *)(field), sizeof(field));	\
+		})
+
 static void __fmc_show_sdb_tree(const struct fmc_device *fmc,
 				const struct sdb_array *arr)
 {
 	unsigned long base = arr->baseaddr;
 	int i, j, n = arr->len, level = arr->level;
+	char buf[64];
 
 	for (i = 0; i < n; i++) {
 		union  sdb_record *r;
···
 			       p->name,
 			       __be64_to_cpu(c->addr_first) + base);
 			if (IS_ERR(arr->subtree[i])) {
-				printk(KERN_CONT "(bridge error %li)\n",
-				       PTR_ERR(arr->subtree[i]));
+				dev_info(&fmc->dev, "SDB: (bridge error %li)\n",
+					 PTR_ERR(arr->subtree[i]));
 				break;
 			}
 			__fmc_show_sdb_tree(fmc, arr->subtree[i]);
···
 			printk(KERN_CONT "integration\n");
 			break;
 		case sdb_type_repo_url:
-			printk(KERN_CONT "repo-url\n");
+			printk(KERN_CONT "Synthesis repository: %s\n",
+			       __sdb_string(buf, r->repo_url.repo_url));
 			break;
 		case sdb_type_synthesis:
-			printk(KERN_CONT "synthesis-info\n");
+			printk(KERN_CONT "Bitstream '%s' ",
+			       __sdb_string(buf, r->synthesis.syn_name));
+			printk(KERN_CONT "synthesized %08x by %s ",
+			       __be32_to_cpu(r->synthesis.date),
+			       __sdb_string(buf, r->synthesis.user_name));
+			printk(KERN_CONT "(%s version %x), ",
+			       __sdb_string(buf, r->synthesis.tool_name),
+			       __be32_to_cpu(r->synthesis.tool_version));
+			printk(KERN_CONT "commit %pm\n",
+			       r->synthesis.commit_id);
 			break;
 		case sdb_type_empty:
 			printk(KERN_CONT "empty\n");

include/linux/fmc-sdb.h

···
 	struct sdb_bridge bridge;
 	struct sdb_integration integr;
 	struct sdb_empty empty;
+	struct sdb_synthesis synthesis;
+	struct sdb_repo_url repo_url;
 };
 
 struct fmc_device;