From 35a9f9363a89aa964c85b769c434a42b8b0f4b0d Mon Sep 17 00:00:00 2001
From: Angelo Dureghello <angelo@kernel-space.org>
Date: Fri, 2 Jul 2021 11:48:39 +0200
Subject: m68k: m5441x: add flexcan support

Add flexcan support.

Signed-off-by: Angelo Dureghello <angelo@kernel-space.org>

Made the flexcan resource inclusion conditional based on the enablement
of the flexcan driver. This commit is no longer dependant on the
presence of the updated driver in mainline.

Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>
---
 arch/m68k/coldfire/device.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
 arch/m68k/coldfire/m5441x.c |  8 ++++----
 2 files changed, 48 insertions(+), 4 deletions(-)

(limited to 'arch/m68k/coldfire')

diff --git a/arch/m68k/coldfire/device.c b/arch/m68k/coldfire/device.c
index 59f7dfe50a4d..0386252e9d04 100644
--- a/arch/m68k/coldfire/device.c
+++ b/arch/m68k/coldfire/device.c
@@ -581,6 +581,47 @@ static struct platform_device mcf_esdhc = {
 };
 #endif /* MCFSDHC_BASE */
 
+#if IS_ENABLED(CONFIG_CAN_FLEXCAN)
+
+#include <linux/can/platform/flexcan.h>
+
+static struct flexcan_platform_data mcf5441x_flexcan_info = {
+	.clk_src = 1,
+	.clock_frequency = 120000000,
+};
+
+static struct resource mcf5441x_flexcan0_resource[] = {
+	{
+		.start = MCFFLEXCAN_BASE0,
+		.end = MCFFLEXCAN_BASE0 + MCFFLEXCAN_SIZE,
+		.flags = IORESOURCE_MEM,
+	},
+	{
+		.start = MCF_IRQ_IFL0,
+		.end = MCF_IRQ_IFL0,
+		.flags = IORESOURCE_IRQ,
+	},
+	{
+		.start = MCF_IRQ_BOFF0,
+		.end = MCF_IRQ_BOFF0,
+		.flags = IORESOURCE_IRQ,
+	},
+	{
+		.start = MCF_IRQ_ERR0,
+		.end = MCF_IRQ_ERR0,
+		.flags = IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device mcf_flexcan0 = {
+	.name = "flexcan-mcf5441x",
+	.id = 0,
+	.num_resources = ARRAY_SIZE(mcf5441x_flexcan0_resource),
+	.resource = mcf5441x_flexcan0_resource,
+	.dev.platform_data = &mcf5441x_flexcan_info,
+};
+#endif /* IS_ENABLED(CONFIG_CAN_FLEXCAN) */
+
 static struct platform_device *mcf_devices[] __initdata = {
 	&mcf_uart,
 #if IS_ENABLED(CONFIG_FEC)
@@ -616,6 +657,9 @@ static struct platform_device *mcf_devices[] __initdata = {
 #ifdef MCFSDHC_BASE
 	&mcf_esdhc,
 #endif
+#if IS_ENABLED(CONFIG_CAN_FLEXCAN)
+	&mcf_flexcan0,
+#endif
 };
 
 /*
diff --git a/arch/m68k/coldfire/m5441x.c b/arch/m68k/coldfire/m5441x.c
index ce14693d18b6..39855044090d 100644
--- a/arch/m68k/coldfire/m5441x.c
+++ b/arch/m68k/coldfire/m5441x.c
@@ -19,8 +19,8 @@
 #include <asm/mcfclk.h>
 
 DEFINE_CLK(0, "flexbus", 2, MCF_CLK);
-DEFINE_CLK(0, "mcfcan.0", 8, MCF_CLK);
-DEFINE_CLK(0, "mcfcan.1", 9, MCF_CLK);
+DEFINE_CLK(0, "flexcan.0", 8, MCF_CLK);
+DEFINE_CLK(0, "flexcan.1", 9, MCF_CLK);
 DEFINE_CLK(0, "imx1-i2c.1", 14, MCF_CLK);
 DEFINE_CLK(0, "mcfdspi.1", 15, MCF_CLK);
 DEFINE_CLK(0, "edma", 17, MCF_CLK);
@@ -142,6 +142,8 @@ static struct clk_lookup m5411x_clk_lookup[] = {
 
 static struct clk * const enable_clks[] __initconst = {
 	/* make sure these clocks are enabled */
+	&__clk_0_8, /* flexcan.0 */
+	&__clk_0_9, /* flexcan.1 */
 	&__clk_0_15, /* dspi.1 */
 	&__clk_0_17, /* eDMA */
 	&__clk_0_18, /* intc0 */
@@ -162,8 +164,6 @@ static struct clk * const enable_clks[] __initconst = {
 	&__clk_1_37, /* gpio */
 };
 static struct clk * const disable_clks[] __initconst = {
-	&__clk_0_8, /* can.0 */
-	&__clk_0_9, /* can.1 */
 	&__clk_0_14, /* i2c.1 */
 	&__clk_0_22, /* i2c.0 */
 	&__clk_0_23, /* dspi.0 */
-- 
cgit