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hc
2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 
 kernel/drivers/mtd/lpddr/lpddr_cmds.c
....@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  * LPDDR flash memory device operations. This module provides read, write,
34  * erase, lock/unlock support for LPDDR flash memories
....@@ -5,20 +6,6 @@
56  * (C) 2008 Vasiliy Leonenko <vasiliy.leonenko@gmail.com>
67  * Many thanks to Roman Borisov for initial enabling
78  *
8
- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public License
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- * as published by the Free Software Foundation; either version 2
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- * of the License, or (at your option) any later version.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, write to the Free Software
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- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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- * 02110-1301, USA.
229  * TODO:
2310  * Implement VPP management
2411  * Implement XIP support
....@@ -106,6 +93,34 @@
10693 	return mtd;
10794 }
10895 EXPORT_SYMBOL(lpddr_cmdset);
96
+
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+static void print_drs_error(unsigned int dsr)
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+{
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+	int prog_status = (dsr & DSR_RPS) >> 8;
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+
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+	if (!(dsr & DSR_AVAILABLE))
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+		pr_notice("DSR.15: (0) Device not Available\n");
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+	if ((prog_status & 0x03) == 0x03)
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+		pr_notice("DSR.9,8: (11) Attempt to program invalid half with 41h command\n");
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+	else if (prog_status & 0x02)
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+		pr_notice("DSR.9,8: (10) Object Mode Program attempt in region with Control Mode data\n");
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+	else if (prog_status &  0x01)
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+		pr_notice("DSR.9,8: (01) Program attempt in region with Object Mode data\n");
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+	if (!(dsr & DSR_READY_STATUS))
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+		pr_notice("DSR.7: (0) Device is Busy\n");
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+	if (dsr & DSR_ESS)
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+		pr_notice("DSR.6: (1) Erase Suspended\n");
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+	if (dsr & DSR_ERASE_STATUS)
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+		pr_notice("DSR.5: (1) Erase/Blank check error\n");
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+	if (dsr & DSR_PROGRAM_STATUS)
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+		pr_notice("DSR.4: (1) Program Error\n");
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+	if (dsr & DSR_VPPS)
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+		pr_notice("DSR.3: (1) Vpp low detect, operation aborted\n");
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+	if (dsr & DSR_PSS)
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+		pr_notice("DSR.2: (1) Program suspended\n");
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+	if (dsr & DSR_DPS)
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+		pr_notice("DSR.1: (1) Aborted Erase/Program attempt on locked block\n");
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+}
109124 
110125 static int wait_for_ready(struct map_info *map, struct flchip *chip,
111126 		unsigned int chip_op_time)
....@@ -317,7 +332,7 @@
317332 		/* Only if there's no operation suspended... */
318333 		if (mode == FL_READY && chip->oldstate == FL_READY)
319334 			return 0;
320
-
335
+		fallthrough;
321336 	default:
322337 sleep:
323338 		set_current_state(TASK_UNINTERRUPTIBLE);