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Merge branch 'for-3.6/dt' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren...
[~andy/linux] / arch / arm / mach-mxs / mach-mxs.c
1 /*
2  * Copyright 2012 Freescale Semiconductor, Inc.
3  * Copyright 2012 Linaro Ltd.
4  *
5  * The code contained herein is licensed under the GNU General Public
6  * License. You may obtain a copy of the GNU General Public License
7  * Version 2 or later at the following locations:
8  *
9  * http://www.opensource.org/licenses/gpl-license.html
10  * http://www.gnu.org/copyleft/gpl.html
11  */
12
13 #include <linux/clk.h>
14 #include <linux/clkdev.h>
15 #include <linux/err.h>
16 #include <linux/init.h>
17 #include <linux/init.h>
18 #include <linux/irqdomain.h>
19 #include <linux/mxsfb.h>
20 #include <linux/of_irq.h>
21 #include <linux/of_platform.h>
22 #include <asm/mach/arch.h>
23 #include <asm/mach/time.h>
24 #include <mach/common.h>
25
26 static struct fb_videomode mx23evk_video_modes[] = {
27         {
28                 .name           = "Samsung-LMS430HF02",
29                 .refresh        = 60,
30                 .xres           = 480,
31                 .yres           = 272,
32                 .pixclock       = 108096, /* picosecond (9.2 MHz) */
33                 .left_margin    = 15,
34                 .right_margin   = 8,
35                 .upper_margin   = 12,
36                 .lower_margin   = 4,
37                 .hsync_len      = 1,
38                 .vsync_len      = 1,
39                 .sync           = FB_SYNC_DATA_ENABLE_HIGH_ACT |
40                                   FB_SYNC_DOTCLK_FAILING_ACT,
41         },
42 };
43
44 static struct fb_videomode mx28evk_video_modes[] = {
45         {
46                 .name           = "Seiko-43WVF1G",
47                 .refresh        = 60,
48                 .xres           = 800,
49                 .yres           = 480,
50                 .pixclock       = 29851, /* picosecond (33.5 MHz) */
51                 .left_margin    = 89,
52                 .right_margin   = 164,
53                 .upper_margin   = 23,
54                 .lower_margin   = 10,
55                 .hsync_len      = 10,
56                 .vsync_len      = 10,
57                 .sync           = FB_SYNC_DATA_ENABLE_HIGH_ACT |
58                                   FB_SYNC_DOTCLK_FAILING_ACT,
59         },
60 };
61
62 static struct mxsfb_platform_data mxsfb_pdata __initdata;
63
64 static struct of_dev_auxdata mxs_auxdata_lookup[] __initdata = {
65         OF_DEV_AUXDATA("fsl,imx23-lcdif", 0x80030000, NULL, &mxsfb_pdata),
66         OF_DEV_AUXDATA("fsl,imx28-lcdif", 0x80030000, NULL, &mxsfb_pdata),
67         { /* sentinel */ }
68 };
69
70 static int __init mxs_icoll_add_irq_domain(struct device_node *np,
71                                 struct device_node *interrupt_parent)
72 {
73         irq_domain_add_legacy(np, 128, 0, 0, &irq_domain_simple_ops, NULL);
74
75         return 0;
76 }
77
78 static int __init mxs_gpio_add_irq_domain(struct device_node *np,
79                                 struct device_node *interrupt_parent)
80 {
81         static int gpio_irq_base = MXS_GPIO_IRQ_START;
82
83         irq_domain_add_legacy(np, 32, gpio_irq_base, 0, &irq_domain_simple_ops, NULL);
84         gpio_irq_base += 32;
85
86         return 0;
87 }
88
89 static const struct of_device_id mxs_irq_match[] __initconst = {
90         { .compatible = "fsl,mxs-icoll", .data = mxs_icoll_add_irq_domain, },
91         { .compatible = "fsl,mxs-gpio", .data = mxs_gpio_add_irq_domain, },
92         { /* sentinel */ }
93 };
94
95 static void __init mxs_dt_init_irq(void)
96 {
97         icoll_init_irq();
98         of_irq_init(mxs_irq_match);
99 }
100
101 static void __init imx23_timer_init(void)
102 {
103         mx23_clocks_init();
104 }
105
106 static struct sys_timer imx23_timer = {
107         .init = imx23_timer_init,
108 };
109
110 static void __init imx28_timer_init(void)
111 {
112         mx28_clocks_init();
113 }
114
115 static struct sys_timer imx28_timer = {
116         .init = imx28_timer_init,
117 };
118
119 enum mac_oui {
120         OUI_FSL,
121         OUI_DENX,
122 };
123
124 static void __init update_fec_mac_prop(enum mac_oui oui)
125 {
126         struct device_node *np, *from = NULL;
127         struct property *oldmac, *newmac;
128         const u32 *ocotp = mxs_get_ocotp();
129         u8 *macaddr;
130         u32 val;
131         int i;
132
133         for (i = 0; i < 2; i++) {
134                 np = of_find_compatible_node(from, NULL, "fsl,imx28-fec");
135                 if (!np)
136                         return;
137                 from = np;
138
139                 newmac = kzalloc(sizeof(*newmac) + 6, GFP_KERNEL);
140                 if (!newmac)
141                         return;
142                 newmac->value = newmac + 1;
143                 newmac->length = 6;
144
145                 newmac->name = kstrdup("local-mac-address", GFP_KERNEL);
146                 if (!newmac->name) {
147                         kfree(newmac);
148                         return;
149                 }
150
151                 /*
152                  * OCOTP only stores the last 4 octets for each mac address,
153                  * so hard-code OUI here.
154                  */
155                 macaddr = newmac->value;
156                 switch (oui) {
157                 case OUI_FSL:
158                         macaddr[0] = 0x00;
159                         macaddr[1] = 0x04;
160                         macaddr[2] = 0x9f;
161                         break;
162                 case OUI_DENX:
163                         macaddr[0] = 0xc0;
164                         macaddr[1] = 0xe5;
165                         macaddr[2] = 0x4e;
166                         break;
167                 }
168                 val = ocotp[i];
169                 macaddr[3] = (val >> 16) & 0xff;
170                 macaddr[4] = (val >> 8) & 0xff;
171                 macaddr[5] = (val >> 0) & 0xff;
172
173                 oldmac = of_find_property(np, newmac->name, NULL);
174                 if (oldmac)
175                         prom_update_property(np, newmac, oldmac);
176                 else
177                         prom_add_property(np, newmac);
178         }
179 }
180
181 static void __init imx23_evk_init(void)
182 {
183         mxsfb_pdata.mode_list = mx23evk_video_modes;
184         mxsfb_pdata.mode_count = ARRAY_SIZE(mx23evk_video_modes);
185         mxsfb_pdata.default_bpp = 32;
186         mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT;
187 }
188
189 static void __init imx28_evk_init(void)
190 {
191         struct clk *clk;
192
193         /* Enable fec phy clock */
194         clk = clk_get_sys("enet_out", NULL);
195         if (!IS_ERR(clk))
196                 clk_prepare_enable(clk);
197
198         update_fec_mac_prop(OUI_FSL);
199
200         mxsfb_pdata.mode_list = mx28evk_video_modes;
201         mxsfb_pdata.mode_count = ARRAY_SIZE(mx28evk_video_modes);
202         mxsfb_pdata.default_bpp = 32;
203         mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT;
204 }
205
206 static void __init mxs_machine_init(void)
207 {
208         if (of_machine_is_compatible("fsl,imx28-evk"))
209                 imx28_evk_init();
210         else if (of_machine_is_compatible("fsl,imx23-evk"))
211                 imx23_evk_init();
212
213         of_platform_populate(NULL, of_default_bus_match_table,
214                              mxs_auxdata_lookup, NULL);
215 }
216
217 static const char *imx23_dt_compat[] __initdata = {
218         "fsl,imx23-evk",
219         "olimex,imx23-olinuxino",
220         "fsl,imx23",
221         NULL,
222 };
223
224 static const char *imx28_dt_compat[] __initdata = {
225         "crystalfontz,cfa10036",
226         "fsl,imx28-evk",
227         "fsl,imx28",
228         NULL,
229 };
230
231 DT_MACHINE_START(IMX23, "Freescale i.MX23 (Device Tree)")
232         .map_io         = mx23_map_io,
233         .init_irq       = mxs_dt_init_irq,
234         .timer          = &imx23_timer,
235         .init_machine   = mxs_machine_init,
236         .dt_compat      = imx23_dt_compat,
237         .restart        = mxs_restart,
238 MACHINE_END
239
240 DT_MACHINE_START(IMX28, "Freescale i.MX28 (Device Tree)")
241         .map_io         = mx28_map_io,
242         .init_irq       = mxs_dt_init_irq,
243         .timer          = &imx28_timer,
244         .init_machine   = mxs_machine_init,
245         .dt_compat      = imx28_dt_compat,
246         .restart        = mxs_restart,
247 MACHINE_END