mac68k: replace mac68k SCC code with platform device

Remove the old 68k Mac serial port code and a lot of related cruft. Add new SCC platform devices to mac 68k platform. Signed-off-by: Finn Thain <fthain@telegraphics.com.au> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
git-mirror · Feb 27, 2010 · 80614e5 · 80614e5
1 parent ec9cbe0
commit 80614e5
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Showing 11 changed files with 80 additions and 522 deletions.
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
@@ -536,10 +536,6 @@ config GVPIOEXT_PLIP
 	  Say Y to enable doing IP over the parallel port on your GVP
 	  IO-Extender card, N otherwise.
 
-config MAC_SCC
-	tristate "Macintosh serial support"
-	depends on MAC
-
 config MAC_HID
 	bool
 	depends on INPUT_ADBHID
@@ -595,7 +591,7 @@ config DN_SERIAL
 
 config SERIAL_CONSOLE
 	bool "Support for serial port console"
-	depends on (AMIGA || ATARI || MAC || SUN3 || SUN3X || VME || APOLLO) && (ATARI_MFPSER=y || ATARI_MIDI=y || MAC_SCC=y || AMIGA_BUILTIN_SERIAL=y || GVPIOEXT=y || MULTIFACE_III_TTY=y || SERIAL=y || MVME147_SCC || SERIAL167 || MVME162_SCC || BVME6000_SCC || DN_SERIAL)
+	depends on (AMIGA || ATARI || SUN3 || SUN3X || VME || APOLLO) && (ATARI_MFPSER=y || ATARI_MIDI=y || AMIGA_BUILTIN_SERIAL=y || GVPIOEXT=y || MULTIFACE_III_TTY=y || SERIAL=y || MVME147_SCC || SERIAL167 || MVME162_SCC || BVME6000_SCC || DN_SERIAL)
 	---help---
 	  If you say Y here, it will be possible to use a serial port as the
 	  system console (the system console is the device which receives all

diff --git a/arch/m68k/configs/mac_defconfig b/arch/m68k/configs/mac_defconfig
@@ -839,9 +839,7 @@ CONFIG_HIDRAW=y
 #
 # Character devices
 #
-CONFIG_MAC_SCC=y
 CONFIG_MAC_HID=y
-CONFIG_SERIAL_CONSOLE=y
 
 #
 # File systems

diff --git a/arch/m68k/configs/multi_defconfig b/arch/m68k/configs/multi_defconfig
@@ -987,7 +987,6 @@ CONFIG_ATARI_MIDI=y
 CONFIG_ATARI_DSP56K=m
 CONFIG_AMIGA_BUILTIN_SERIAL=y
 CONFIG_MULTIFACE_III_TTY=m
-CONFIG_MAC_SCC=y
 CONFIG_MAC_HID=y
 CONFIG_MVME147_SCC=y
 CONFIG_SERIAL167=y

diff --git a/arch/m68k/include/asm/machw.h b/arch/m68k/include/asm/machw.h
@@ -21,29 +21,4 @@
 #define VIDEOMEMSIZE	(4096*1024)
 #define VIDEOMEMMASK	(-4096*1024)
 
-#ifndef __ASSEMBLY__
-
-#include <linux/types.h>
-
-#if 0
-/*
-** SCC Z8530
-*/
-
-#define MAC_SCC_BAS (0x50F04000)
-struct MAC_SCC
- {
-  u_char cha_a_ctrl;
-  u_char char_dummy1;
-  u_char cha_a_data;
-  u_char char_dummy2;
-  u_char cha_b_ctrl;
-  u_char char_dummy3;
-  u_char cha_b_data;
- };
-# define mac_scc ((*(volatile struct SCC*)MAC_SCC_BAS))
-#endif
-
-#endif /* __ASSEMBLY__ */
-
 #endif /* linux/machw.h */
diff --git a/arch/m68k/include/asm/macints.h b/arch/m68k/include/asm/macints.h
@@ -37,7 +37,6 @@
 
 #define VIA1_SOURCE_BASE	8
 #define VIA2_SOURCE_BASE	16
-#define MAC_SCC_SOURCE_BASE	24
 #define PSC3_SOURCE_BASE	24
 #define PSC4_SOURCE_BASE	32
 #define PSC5_SOURCE_BASE	40
@@ -96,26 +95,12 @@
 #define IRQ_PSC3_2	  (26)
 #define IRQ_PSC3_3	  (27)
 
-/* Level 4 (SCC) interrupts */
-#define IRQ_SCC		     (32)
-#define IRQ_SCCA	     (33)
-#define IRQ_SCCB	     (34)
-#if 0 /* FIXME: are there multiple interrupt conditions on the SCC ?? */
-/* SCC interrupts */
-#define IRQ_SCCB_TX	     (32)
-#define IRQ_SCCB_STAT	     (33)
-#define IRQ_SCCB_RX	     (34)
-#define IRQ_SCCB_SPCOND	     (35)
-#define IRQ_SCCA_TX	     (36)
-#define IRQ_SCCA_STAT	     (37)
-#define IRQ_SCCA_RX	     (38)
-#define IRQ_SCCA_SPCOND	     (39)
-#endif
-
 /* Level 4 (PSC, AV Macs only) interrupts */
 #define IRQ_PSC4_0	  (32)
 #define IRQ_PSC4_1	  (33)
+#define IRQ_MAC_SCC_A	  IRQ_PSC4_1
 #define IRQ_PSC4_2	  (34)
+#define IRQ_MAC_SCC_B	  IRQ_PSC4_2
 #define IRQ_PSC4_3	  (35)
 #define IRQ_MAC_MACE_DMA  IRQ_PSC4_3
 
@@ -146,6 +131,9 @@
 #define IRQ_BABOON_2	  (66)
 #define IRQ_BABOON_3	  (67)
 
+/* On non-PSC machines, the serial ports share an IRQ */
+#define IRQ_MAC_SCC	  IRQ_AUTO_4
+
 #define SLOT2IRQ(x)	  (x + 47)
 #define IRQ2SLOT(x)	  (x - 47)
 

diff --git a/arch/m68k/mac/Makefile b/arch/m68k/mac/Makefile
@@ -3,4 +3,4 @@
 #
 
 obj-y		:= config.o macints.o iop.o via.o oss.o psc.o \
-			baboon.o macboing.o debug.o misc.o
+			baboon.o macboing.o misc.o
diff --git a/arch/m68k/mac/config.c b/arch/m68k/mac/config.c
@@ -792,6 +792,32 @@ static struct mac_model mac_data_table[] = {
 	}
 };
 
+static struct resource scc_a_rsrcs[] = {
+	{ .flags = IORESOURCE_MEM },
+	{ .flags = IORESOURCE_IRQ },
+};
+
+static struct resource scc_b_rsrcs[] = {
+	{ .flags = IORESOURCE_MEM },
+	{ .flags = IORESOURCE_IRQ },
+};
+
+struct platform_device scc_a_pdev = {
+	.name           = "scc",
+	.id             = 0,
+	.num_resources  = ARRAY_SIZE(scc_a_rsrcs),
+	.resource       = scc_a_rsrcs,
+};
+EXPORT_SYMBOL(scc_a_pdev);
+
+struct platform_device scc_b_pdev = {
+	.name           = "scc",
+	.id             = 1,
+	.num_resources  = ARRAY_SIZE(scc_b_rsrcs),
+	.resource       = scc_b_rsrcs,
+};
+EXPORT_SYMBOL(scc_b_pdev);
+
 static void __init mac_identify(void)
 {
 	struct mac_model *m;
@@ -814,6 +840,24 @@ static void __init mac_identify(void)
 		}
 	}
 
+	/* Set up serial port resources for the console initcall. */
+
+	scc_a_rsrcs[0].start = (resource_size_t) mac_bi_data.sccbase + 2;
+	scc_a_rsrcs[0].end   = scc_a_rsrcs[0].start;
+	scc_b_rsrcs[0].start = (resource_size_t) mac_bi_data.sccbase;
+	scc_b_rsrcs[0].end   = scc_b_rsrcs[0].start;
+
+	switch (macintosh_config->scc_type) {
+	case MAC_SCC_PSC:
+		scc_a_rsrcs[1].start = scc_a_rsrcs[1].end = IRQ_MAC_SCC_A;
+		scc_b_rsrcs[1].start = scc_b_rsrcs[1].end = IRQ_MAC_SCC_B;
+		break;
+	default:
+		scc_a_rsrcs[1].start = scc_a_rsrcs[1].end = IRQ_MAC_SCC;
+		scc_b_rsrcs[1].start = scc_b_rsrcs[1].end = IRQ_MAC_SCC;
+		break;
+	}
+
 	/*
 	 * We need to pre-init the IOPs, if any. Otherwise
 	 * the serial console won't work if the user had
@@ -871,6 +915,13 @@ int __init mac_platform_init(void)
 {
 	u8 *swim_base;
 
+	/*
+	 * Serial devices
+	 */
+
+	platform_device_register(&scc_a_pdev);
+	platform_device_register(&scc_b_pdev);
+
 	/*
 	 * Floppy device
 	 */