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authorLinus Torvalds <torvalds@linux-foundation.org>2013-07-02 17:33:21 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-02 17:33:21 -0400
commit0bf6a210a43f7118d858806200127e421649fc4e (patch)
tree9a17d88ebd1b9bc693fba7f39c12123dec96e930 /arch/arm/mach-omap1
parentee1a8d402e7e204d57fb108aa40003b6d1633036 (diff)
parent5c913a9a9772f4b434aaea7328836419287b5d1c (diff)
Merge tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver specific changes from Arnd Bergmann: "These changes are all driver specific and cross over between arm-soc contents and some other subsystem, in these cases cpufreq, crypto, dma, pinctrl, mailbox and usb, and the subsystem owners agreed to have these changes merged through arm-soc. As we proceed to untangle the dependencies between platform code and driver code, the amount of changes in this category is fortunately shrinking, for 3.11 we have 16 branches here and 101 non-merge changesets, the majority of which are for the stedma40 dma engine driver used in the ux500 platform. Cleaning up that code touches multiple subsystems, but gets rid of the dependency in the end. The mailbox code moved out from mach-omap2 to drivers/mailbox is an intermediate step and is still omap specific at the moment. Patches exist to generalize the subsystem and add other drivers with the same API, but those did not make it for 3.11." * tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (101 commits) crypto: ux500: use dmaengine_submit API crypto: ux500: use dmaengine_prep_slave_sg API crypto: ux500: use dmaengine_device_control API crypto: ux500/crypt: add missing __iomem qualifiers crypto: ux500/hash: add missing static qualifiers crypto: ux500/hash: use readl on iomem addresses dmaengine: ste_dma40: Declare memcpy config as static ARM: ux500: Remove mop500_snowball_ethernet_clock_enable() ARM: ux500: Correct the EN_3v3 regulator's on/off GPIO ARM: ux500: Provide a AB8500 GPIO Device Tree node gpio: rcar: fix gpio_rcar_of_table gpio-rcar: Remove #ifdef CONFIG_OF around OF-specific sections gpio-rcar: Reference core gpio documentation in the DT bindings clk: exynos5250: Add enum entries for divider clock of i2s1 and i2s2 ARM: dts: Update Samsung I2S documentation ARM: dts: add clock provider information for i2s controllers in Exynos5250 ARM: dts: add Exynos audio subsystem clock controller node clk: samsung: register audio subsystem clocks using common clock framework ARM: dts: use #include for all device trees for Samsung pinctrl: s3c24xx: use correct header for chained_irq functions ...
Diffstat (limited to 'arch/arm/mach-omap1')
-rw-r--r--arch/arm/mach-omap1/Makefile4
-rw-r--r--arch/arm/mach-omap1/mailbox.c199
2 files changed, 0 insertions, 203 deletions
diff --git a/arch/arm/mach-omap1/Makefile b/arch/arm/mach-omap1/Makefile
index 222d58c0ae76..3889b6cd211e 100644
--- a/arch/arm/mach-omap1/Makefile
+++ b/arch/arm/mach-omap1/Makefile
@@ -19,10 +19,6 @@ obj-$(CONFIG_ARCH_OMAP16XX) += ocpi.o
19# Power Management 19# Power Management
20obj-$(CONFIG_PM) += pm.o sleep.o 20obj-$(CONFIG_PM) += pm.o sleep.o
21 21
22# DSP
23obj-$(CONFIG_OMAP_MBOX_FWK) += mailbox_mach.o
24mailbox_mach-objs := mailbox.o
25
26i2c-omap-$(CONFIG_I2C_OMAP) := i2c.o 22i2c-omap-$(CONFIG_I2C_OMAP) := i2c.o
27obj-y += $(i2c-omap-m) $(i2c-omap-y) 23obj-y += $(i2c-omap-m) $(i2c-omap-y)
28 24
diff --git a/arch/arm/mach-omap1/mailbox.c b/arch/arm/mach-omap1/mailbox.c
deleted file mode 100644
index efc8f207f6fc..000000000000
--- a/arch/arm/mach-omap1/mailbox.c
+++ /dev/null
@@ -1,199 +0,0 @@
1/*
2 * Mailbox reservation modules for OMAP1
3 *
4 * Copyright (C) 2006-2009 Nokia Corporation
5 * Written by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
6 *
7 * This file is subject to the terms and conditions of the GNU General Public
8 * License. See the file "COPYING" in the main directory of this archive
9 * for more details.
10 */
11
12#include <linux/module.h>
13#include <linux/interrupt.h>
14#include <linux/platform_device.h>
15#include <linux/io.h>
16#include <plat/mailbox.h>
17
18#define MAILBOX_ARM2DSP1 0x00
19#define MAILBOX_ARM2DSP1b 0x04
20#define MAILBOX_DSP2ARM1 0x08
21#define MAILBOX_DSP2ARM1b 0x0c
22#define MAILBOX_DSP2ARM2 0x10
23#define MAILBOX_DSP2ARM2b 0x14
24#define MAILBOX_ARM2DSP1_Flag 0x18
25#define MAILBOX_DSP2ARM1_Flag 0x1c
26#define MAILBOX_DSP2ARM2_Flag 0x20
27
28static void __iomem *mbox_base;
29
30struct omap_mbox1_fifo {
31 unsigned long cmd;
32 unsigned long data;
33 unsigned long flag;
34};
35
36struct omap_mbox1_priv {
37 struct omap_mbox1_fifo tx_fifo;
38 struct omap_mbox1_fifo rx_fifo;
39};
40
41static inline int mbox_read_reg(size_t ofs)
42{
43 return __raw_readw(mbox_base + ofs);
44}
45
46static inline void mbox_write_reg(u32 val, size_t ofs)
47{
48 __raw_writew(val, mbox_base + ofs);
49}
50
51/* msg */
52static mbox_msg_t omap1_mbox_fifo_read(struct omap_mbox *mbox)
53{
54 struct omap_mbox1_fifo *fifo =
55 &((struct omap_mbox1_priv *)mbox->priv)->rx_fifo;
56 mbox_msg_t msg;
57
58 msg = mbox_read_reg(fifo->data);
59 msg |= ((mbox_msg_t) mbox_read_reg(fifo->cmd)) << 16;
60
61 return msg;
62}
63
64static void
65omap1_mbox_fifo_write(struct omap_mbox *mbox, mbox_msg_t msg)
66{
67 struct omap_mbox1_fifo *fifo =
68 &((struct omap_mbox1_priv *)mbox->priv)->tx_fifo;
69
70 mbox_write_reg(msg & 0xffff, fifo->data);
71 mbox_write_reg(msg >> 16, fifo->cmd);
72}
73
74static int omap1_mbox_fifo_empty(struct omap_mbox *mbox)
75{
76 return 0;
77}
78
79static int omap1_mbox_fifo_full(struct omap_mbox *mbox)
80{
81 struct omap_mbox1_fifo *fifo =
82 &((struct omap_mbox1_priv *)mbox->priv)->rx_fifo;
83
84 return mbox_read_reg(fifo->flag);
85}
86
87/* irq */
88static void
89omap1_mbox_enable_irq(struct omap_mbox *mbox, omap_mbox_type_t irq)
90{
91 if (irq == IRQ_RX)
92 enable_irq(mbox->irq);
93}
94
95static void
96omap1_mbox_disable_irq(struct omap_mbox *mbox, omap_mbox_type_t irq)
97{
98 if (irq == IRQ_RX)
99 disable_irq(mbox->irq);
100}
101
102static int
103omap1_mbox_is_irq(struct omap_mbox *mbox, omap_mbox_type_t irq)
104{
105 if (irq == IRQ_TX)
106 return 0;
107 return 1;
108}
109
110static struct omap_mbox_ops omap1_mbox_ops = {
111 .type = OMAP_MBOX_TYPE1,
112 .fifo_read = omap1_mbox_fifo_read,
113 .fifo_write = omap1_mbox_fifo_write,
114 .fifo_empty = omap1_mbox_fifo_empty,
115 .fifo_full = omap1_mbox_fifo_full,
116 .enable_irq = omap1_mbox_enable_irq,
117 .disable_irq = omap1_mbox_disable_irq,
118 .is_irq = omap1_mbox_is_irq,
119};
120
121/* FIXME: the following struct should be created automatically by the user id */
122
123/* DSP */
124static struct omap_mbox1_priv omap1_mbox_dsp_priv = {
125 .tx_fifo = {
126 .cmd = MAILBOX_ARM2DSP1b,
127 .data = MAILBOX_ARM2DSP1,
128 .flag = MAILBOX_ARM2DSP1_Flag,
129 },
130 .rx_fifo = {
131 .cmd = MAILBOX_DSP2ARM1b,
132 .data = MAILBOX_DSP2ARM1,
133 .flag = MAILBOX_DSP2ARM1_Flag,
134 },
135};
136
137static struct omap_mbox mbox_dsp_info = {
138 .name = "dsp",
139 .ops = &omap1_mbox_ops,
140 .priv = &omap1_mbox_dsp_priv,
141};
142
143static struct omap_mbox *omap1_mboxes[] = { &mbox_dsp_info, NULL };
144
145static int omap1_mbox_probe(struct platform_device *pdev)
146{
147 struct resource *mem;
148 int ret;
149 struct omap_mbox **list;
150
151 list = omap1_mboxes;
152 list[0]->irq = platform_get_irq_byname(pdev, "dsp");
153
154 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
155 mbox_base = ioremap(mem->start, resource_size(mem));
156 if (!mbox_base)
157 return -ENOMEM;
158
159 ret = omap_mbox_register(&pdev->dev, list);
160 if (ret) {
161 iounmap(mbox_base);
162 return ret;
163 }
164
165 return 0;
166}
167
168static int omap1_mbox_remove(struct platform_device *pdev)
169{
170 omap_mbox_unregister();
171 iounmap(mbox_base);
172 return 0;
173}
174
175static struct platform_driver omap1_mbox_driver = {
176 .probe = omap1_mbox_probe,
177 .remove = omap1_mbox_remove,
178 .driver = {
179 .name = "omap-mailbox",
180 },
181};
182
183static int __init omap1_mbox_init(void)
184{
185 return platform_driver_register(&omap1_mbox_driver);
186}
187
188static void __exit omap1_mbox_exit(void)
189{
190 platform_driver_unregister(&omap1_mbox_driver);
191}
192
193module_init(omap1_mbox_init);
194module_exit(omap1_mbox_exit);
195
196MODULE_LICENSE("GPL v2");
197MODULE_DESCRIPTION("omap mailbox: omap1 architecture specific functions");
198MODULE_AUTHOR("Hiroshi DOYU <Hiroshi.DOYU@nokia.com>");
199MODULE_ALIAS("platform:omap1-mailbox");