summaryrefslogtreecommitdiff
path: root/target/linux/brcm63xx/patches-3.7/425-MIPS-BCM63XX-add-HS-SPI-platform-device-and-register.patch
blob: ee3b5d436423b04376c40af5088bf2f64f688c81 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
From 261ee140e75615351128eee497e6bbd76686784b Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jonas.gorski@gmail.com>
Date: Sat, 12 Nov 2011 12:18:26 +0100
Subject: [PATCH 51/72] MIPS: BCM63XX: add HS SPI platform device and register
 it

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
---
 arch/mips/bcm63xx/Makefile                         |    4 +-
 arch/mips/bcm63xx/boards/board_bcm963xx.c          |    2 +
 arch/mips/bcm63xx/dev-hsspi.c                      |   57 ++++++++++++++++++++
 .../include/asm/mach-bcm63xx/bcm63xx_dev_hsspi.h   |   20 +++++++
 4 files changed, 81 insertions(+), 2 deletions(-)
 create mode 100644 arch/mips/bcm63xx/dev-hsspi.c
 create mode 100644 arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_hsspi.h

--- a/arch/mips/bcm63xx/Makefile
+++ b/arch/mips/bcm63xx/Makefile
@@ -1,7 +1,7 @@
 obj-y		+= clk.o cpu.o cs.o gpio.o irq.o nvram.o prom.o reset.o \
 		   setup.o timer.o dev-dsp.o dev-enet.o dev-flash.o \
-		   dev-pcmcia.o dev-rng.o dev-spi.o dev-uart.o dev-wdt.o \
-		   dev-usb-ehci.o dev-usb-ohci.o dev-usb-usbd.o
+		   dev-hsspi.o dev-pcmcia.o dev-rng.o dev-spi.o dev-uart.o \
+		   dev-wdt.o dev-usb-ehci.o dev-usb-ohci.o dev-usb-usbd.o
 obj-$(CONFIG_EARLY_PRINTK)	+= early_printk.o
 
 obj-y		+= boards/
--- a/arch/mips/bcm63xx/boards/board_bcm963xx.c
+++ b/arch/mips/bcm63xx/boards/board_bcm963xx.c
@@ -26,6 +26,7 @@
 #include <bcm63xx_dev_enet.h>
 #include <bcm63xx_dev_dsp.h>
 #include <bcm63xx_dev_flash.h>
+#include <bcm63xx_dev_hsspi.h>
 #include <bcm63xx_dev_pcmcia.h>
 #include <bcm63xx_dev_spi.h>
 #include <bcm63xx_dev_usb_ohci.h>
@@ -955,6 +956,7 @@ int __init board_register_devices(void)
 			pr_err(PFX "failed to register fallback SPROM\n");
 	}
 #endif
+	bcm63xx_hsspi_register();
 
 	bcm63xx_spi_register();
 
--- /dev/null
+++ b/arch/mips/bcm63xx/dev-hsspi.c
@@ -0,0 +1,57 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2012 Jonas Gorski <jonas.gorski@gmail.com>
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+
+#include <bcm63xx_cpu.h>
+#include <bcm63xx_dev_hsspi.h>
+#include <bcm63xx_regs.h>
+
+static struct resource spi_resources[] = {
+	{
+		.start		= -1, /* filled at runtime */
+		.end		= -1, /* filled at runtime */
+		.flags		= IORESOURCE_MEM,
+	},
+	{
+		.start		= -1, /* filled at runtime */
+		.flags		= IORESOURCE_IRQ,
+	},
+};
+
+static struct bcm63xx_hsspi_pdata spi_pdata = {
+	.bus_num	= 0,
+};
+
+static struct platform_device bcm63xx_hsspi_device = {
+	.name		= "bcm63xx-hsspi",
+	.id		= 0,
+	.num_resources	= ARRAY_SIZE(spi_resources),
+	.resource	= spi_resources,
+	.dev		= {
+		.platform_data = &spi_pdata,
+	},
+};
+
+int __init bcm63xx_hsspi_register(void)
+{
+
+	if (!BCMCPU_IS_6328())
+		return -ENODEV;
+
+	spi_resources[0].start = bcm63xx_regset_address(RSET_HSSPI);
+	spi_resources[0].end = spi_resources[0].start;
+	spi_resources[0].end += RSET_HSSPI_SIZE - 1;
+	spi_resources[1].start = bcm63xx_get_irq_number(IRQ_HSSPI);
+
+	spi_pdata.speed_hz = HSSPI_PLL_HZ_6328;
+
+	return platform_device_register(&bcm63xx_hsspi_device);
+}
--- /dev/null
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_hsspi.h
@@ -0,0 +1,20 @@
+#ifndef BCM63XX_DEV_HSSPI_H
+#define BCM63XX_DEV_HSSPI_H
+
+#include <linux/types.h>
+#include <bcm63xx_io.h>
+#include <bcm63xx_regs.h>
+
+int __init bcm63xx_hsspi_register(void);
+
+struct bcm63xx_hsspi_pdata {
+	int		bus_num;
+	u32		speed_hz;
+};
+
+#define bcm_hsspi_readl(o)	bcm_rset_readl(RSET_HSSPI, (o))
+#define bcm_hsspi_writel(v, o)	bcm_rset_writel(RSET_HSSPI, (v), (o))
+
+#define HSSPI_PLL_HZ_6328	133333333
+
+#endif /* BCM63XX_DEV_HSSPI_H */