linux-kernel - [PATCH 05/10] EDAC, altera: Add Arria10 NAND EDAC support

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Message-ID: <1468512408-5156-6-git-send-email-tthayer@opensource.altera.com>
Date:	Thu, 14 Jul 2016 11:06:43 -0500
From:	<tthayer@...nsource.altera.com>
To:	<bp@...en8.de>, <dougthompson@...ssion.com>,
	<m.chehab@...sung.com>, <robh+dt@...nel.org>, <pawel.moll@....com>,
	<mark.rutland@....com>, <ijc+devicetree@...lion.org.uk>,
	<galak@...eaurora.org>, <linux@....linux.org.uk>,
	<dinguyen@...nsource.altera.com>, <grant.likely@...aro.org>
CC:	<devicetree@...r.kernel.org>, <linux-doc@...r.kernel.org>,
	<linux-edac@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <tthayer.linux@...il.com>,
	<tthayer@...nsource.altera.com>
Subject: [PATCH 05/10] EDAC, altera: Add Arria10 NAND EDAC support

From: Thor Thayer <tthayer@...nsource.altera.com>

Add Altera Arria10 NAND FIFO memory EDAC support.

Signed-off-by: Thor Thayer <tthayer@...nsource.altera.com>
---
 drivers/edac/Kconfig       |    7 +++++++
 drivers/edac/altera_edac.c |   34 +++++++++++++++++++++++++++++++++-
 2 files changed, 40 insertions(+), 1 deletion(-)

diff --git a/drivers/edac/Kconfig b/drivers/edac/Kconfig
index d0c1dab..47378b3 100644
--- a/drivers/edac/Kconfig
+++ b/drivers/edac/Kconfig
@@ -398,6 +398,13 @@ config EDAC_ALTERA_ETHERNET
 	  Support for error detection and correction on the
 	  Altera Ethernet FIFO Memory for Altera SoCs.
 
+config EDAC_ALTERA_NAND
+	bool "Altera NAND FIFO ECC"
+	depends on EDAC_ALTERA=y && MTD_NAND_DENALI
+	help
+	  Support for error detection and correction on the
+	  Altera NAND FIFO Memory for Altera SoCs.
+
 config EDAC_SYNOPSYS
 	tristate "Synopsys DDR Memory Controller"
 	depends on EDAC_MM_EDAC && ARCH_ZYNQ
diff --git a/drivers/edac/altera_edac.c b/drivers/edac/altera_edac.c
index 2398d07..35d87d1 100644
--- a/drivers/edac/altera_edac.c
+++ b/drivers/edac/altera_edac.c
@@ -1285,6 +1285,33 @@ early_initcall(socfpga_init_ethernet_ecc);
 
 #endif	/* CONFIG_EDAC_ALTERA_ETHERNET */
 
+/********************** NAND Device Functions **********************/
+
+#ifdef CONFIG_EDAC_ALTERA_NAND
+
+static const struct edac_device_prv_data a10_nandecc_data = {
+	.setup = altr_check_ecc_deps,
+	.ce_clear_mask = ALTR_A10_ECC_SERRPENA,
+	.ue_clear_mask = ALTR_A10_ECC_DERRPENA,
+	.dbgfs_name = "altr_trigger",
+	.ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL,
+	.ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST,
+	.ce_set_mask = ALTR_A10_ECC_TSERRA,
+	.ue_set_mask = ALTR_A10_ECC_TDERRA,
+	.set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
+	.ecc_irq_handler = altr_edac_a10_ecc_irq,
+	.inject_fops = &altr_edac_a10_device_inject_fops,
+};
+
+static int __init socfpga_init_nand_ecc(void)
+{
+	return altr_init_a10_ecc_device_type("altr,socfpga-nand-ecc");
+}
+
+early_initcall(socfpga_init_nand_ecc);
+
+#endif	/* CONFIG_EDAC_ALTERA_NAND */
+
 /********************* Arria10 EDAC Device Functions *************************/
 static const struct of_device_id altr_edac_a10_device_of_match[] = {
 #ifdef CONFIG_EDAC_ALTERA_L2C
@@ -1298,6 +1325,9 @@ static const struct of_device_id altr_edac_a10_device_of_match[] = {
 	{ .compatible = "altr,socfpga-eth-mac-ecc",
 	  .data = &a10_enetecc_data },
 #endif
+#ifdef CONFIG_EDAC_ALTERA_NAND
+	{ .compatible = "altr,socfpga-nand-ecc", .data = &a10_nandecc_data },
+#endif
 	{},
 };
 MODULE_DEVICE_TABLE(of, altr_edac_a10_device_of_match);
@@ -1589,7 +1619,9 @@ static int altr_edac_a10_probe(struct platform_device *pdev)
 		else if ((of_device_is_compatible(child,
 					"altr,socfpga-a10-ocram-ecc")) ||
 			 (of_device_is_compatible(child,
-					"altr,socfpga-eth-mac-ecc")))
+					"altr,socfpga-eth-mac-ecc")) ||
+			 (of_device_is_compatible(child,
+						  "altr,socfpga-nand-ecc")))
 			altr_edac_a10_device_add(edac, child);
 		else if (of_device_is_compatible(child,
 						 "altr,sdram-edac-a10"))
-- 
1.7.9.5