arm: tegra: enterprise: SMPS1 controlled by PREQ2 input
[linux-2.6.git] / arch / arm / mach-tegra / board-enterprise-power.c
1 /*
2  * arch/arm/mach-tegra/board-enterprise-power.c
3  *
4  * Copyright (C) 2011 NVIDIA, Inc.
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18  * 02111-1307, USA
19  */
20 #include <linux/i2c.h>
21 #include <linux/pda_power.h>
22 #include <linux/platform_device.h>
23 #include <linux/resource.h>
24 #include <linux/regulator/machine.h>
25 #include <linux/regulator/gpio-switch-regulator.h>
26 #include <linux/mfd/tps80031.h>
27 #include <linux/regulator/tps80031-regulator.h>
28 #include <linux/gpio.h>
29 #include <linux/io.h>
30
31 #include <mach/iomap.h>
32 #include <mach/irqs.h>
33 #include <mach/pinmux.h>
34
35 #include "gpio-names.h"
36 #include "board-enterprise.h"
37 #include "pm.h"
38 #include "wakeups-t3.h"
39
40 #define PMC_CTRL                0x0
41 #define PMC_CTRL_INTR_LOW       (1 << 17)
42
43 /************************ TPS80031 based regulator ****************/
44 static struct regulator_consumer_supply tps80031_vio_supply[] = {
45         REGULATOR_SUPPLY("vio_1v8", NULL),
46         REGULATOR_SUPPLY("avdd_osc", NULL),
47         REGULATOR_SUPPLY("vddio_sys", NULL),
48         REGULATOR_SUPPLY("vddio_uart", NULL),
49         REGULATOR_SUPPLY("vddio_lcd", NULL),
50         REGULATOR_SUPPLY("vddio_audio", NULL),
51         REGULATOR_SUPPLY("vddio_bb", NULL),
52         REGULATOR_SUPPLY("vddio_gmi", NULL),
53         REGULATOR_SUPPLY("avdd_usb_pll", NULL),
54         REGULATOR_SUPPLY("vddio_cam", NULL),
55         REGULATOR_SUPPLY("vddio_sdmmc1", NULL),
56         REGULATOR_SUPPLY("vddio_sdmmc4", NULL),
57         REGULATOR_SUPPLY("avdd_hdmi_pll", NULL),
58         REGULATOR_SUPPLY("vddio_gps", NULL),
59         REGULATOR_SUPPLY("vdd_lcd_buffered", NULL),
60         REGULATOR_SUPPLY("vddio_nand", NULL),
61         REGULATOR_SUPPLY("vddio_sd", NULL),
62         REGULATOR_SUPPLY("vdd_bat", NULL),
63         REGULATOR_SUPPLY("vdd_io", NULL),
64 };
65
66 static struct regulator_consumer_supply tps80031_smps1_supply[] = {
67         REGULATOR_SUPPLY("vdd_cpu", NULL),
68 };
69
70 static struct regulator_consumer_supply tps80031_smps2_supply[] = {
71         REGULATOR_SUPPLY("vdd_core", NULL),
72 };
73
74 static struct regulator_consumer_supply tps80031_smps3_supply[] = {
75         REGULATOR_SUPPLY("en_vddio_ddr_1v2", NULL),
76         REGULATOR_SUPPLY("vddio_ddr", NULL),
77         REGULATOR_SUPPLY("vdd_lpddr", NULL),
78         REGULATOR_SUPPLY("ddr_comp_pu", NULL),
79 };
80
81 static struct regulator_consumer_supply tps80031_smps4_supply[] = {
82         REGULATOR_SUPPLY("vddio_sdmmc_2v85", NULL),
83 };
84
85 static struct regulator_consumer_supply tps80031_vana_supply[] = {
86         REGULATOR_SUPPLY("unused_vana", NULL),
87 };
88
89 static struct regulator_consumer_supply tps80031_ldo1_supply[] = {
90         REGULATOR_SUPPLY("avdd_dsi_csi", NULL),
91 };
92
93 static struct regulator_consumer_supply tps80031_ldo2_supply[] = {
94         REGULATOR_SUPPLY("vdd_rtc", NULL),
95 };
96
97 static struct regulator_consumer_supply tps80031_ldo3_supply[] = {
98         REGULATOR_SUPPLY("vdd_vbrtr", NULL),
99 };
100
101 static struct regulator_consumer_supply tps80031_ldo4_supply[] = {
102         REGULATOR_SUPPLY("avdd_lcd", NULL),
103 };
104
105 static struct regulator_consumer_supply tps80031_ldo5_supply[] = {
106         REGULATOR_SUPPLY("vdd_sensor", NULL),
107         REGULATOR_SUPPLY("vdd_compass", NULL),
108         REGULATOR_SUPPLY("vdd_als", NULL),
109         REGULATOR_SUPPLY("vdd_gyro", NULL),
110         REGULATOR_SUPPLY("vdd_touch", NULL),
111         REGULATOR_SUPPLY("vdd_proxim_diode", NULL),
112 };
113
114 static struct regulator_consumer_supply tps80031_ldo6_supply[] = {
115         REGULATOR_SUPPLY("vdd_ddr_rx", NULL),
116         REGULATOR_SUPPLY("vddf_core_emmc", NULL),
117 };
118
119 static struct regulator_consumer_supply tps80031_ldo7_supply[] = {
120         REGULATOR_SUPPLY("vdd_plla_p_c_s", NULL),
121         REGULATOR_SUPPLY("vdd_pllm", NULL),
122         REGULATOR_SUPPLY("vdd_pllu_d", NULL),
123         REGULATOR_SUPPLY("vdd_pllx", NULL),
124 };
125
126 static struct regulator_consumer_supply tps80031_ldoln_supply[] = {
127         REGULATOR_SUPPLY("vdd_ddr_hs", NULL),
128 };
129
130 static struct regulator_consumer_supply tps80031_ldousb_supply[] = {
131         REGULATOR_SUPPLY("unused_ldousb", NULL),
132 };
133
134 static struct regulator_consumer_supply tps80031_vbus_supply[] = {
135         REGULATOR_SUPPLY("usb_vbus", NULL),
136 };
137
138 #define TPS_PDATA_INIT(_id, _minmv, _maxmv, _supply_reg, _always_on,    \
139         _boot_on, _apply_uv, _init_uV, _init_enable, _init_apply, _flags) \
140         static struct tps80031_regulator_platform_data pdata_##_id = {  \
141                 .regulator = {                                          \
142                         .constraints = {                                \
143                                 .min_uV = (_minmv)*1000,                \
144                                 .max_uV = (_maxmv)*1000,                \
145                                 .valid_modes_mask = (REGULATOR_MODE_NORMAL |  \
146                                                 REGULATOR_MODE_STANDBY),      \
147                                 .valid_ops_mask = (REGULATOR_CHANGE_MODE |    \
148                                                 REGULATOR_CHANGE_STATUS |     \
149                                                 REGULATOR_CHANGE_VOLTAGE),    \
150                                 .always_on = _always_on,                \
151                                 .boot_on = _boot_on,                    \
152                                 .apply_uV = _apply_uv,                  \
153                         },                                              \
154                         .num_consumer_supplies =                        \
155                                 ARRAY_SIZE(tps80031_##_id##_supply),    \
156                         .consumer_supplies = tps80031_##_id##_supply,   \
157                         .supply_regulator = _supply_reg,                \
158                 },                                                      \
159                 .init_uV =  _init_uV * 1000,                            \
160                 .init_enable = _init_enable,                            \
161                 .init_apply = _init_apply,                              \
162                 .flags = _flags,                                        \
163         }
164
165 TPS_PDATA_INIT(vio,   600, 2100, 0, 0, 0, 0, -1, 0, 0, 0);
166 TPS_PDATA_INIT(smps1, 600, 2100, 0, 0, 0, 0, -1, 0, 0, PWR_REQ_INPUT_PREQ2);
167 TPS_PDATA_INIT(smps2, 600, 2100, 0, 0, 0, 0, -1, 0, 0, 0);
168 TPS_PDATA_INIT(smps3, 600, 2100, 0, 0, 0, 0, -1, 0, 0, 0);
169 TPS_PDATA_INIT(smps4, 600, 2100, 0, 0, 0, 0, -1, 0, 0, 0);
170
171 TPS_PDATA_INIT(ldo1, 1000, 3300, tps80031_rails(VIO), 0, 0, 0, -1, 0, 0, 0);
172 TPS_PDATA_INIT(ldo2, 1000, 3300, 0, 0, 0, 0, -1, 0, 0, 0);
173 TPS_PDATA_INIT(ldo3, 1000, 3300, tps80031_rails(VIO), 0, 0, 0, -1, 0, 0, 0);
174 TPS_PDATA_INIT(ldo4, 1000, 3300, 0, 0, 0, 0, -1, 0, 0, 0);
175 TPS_PDATA_INIT(ldo5, 1000, 3300, 0, 0, 0, 0, -1, 0, 0, 0);
176 TPS_PDATA_INIT(ldo6, 1000, 3300, 0, 0, 0, 0, -1, 0, 0, 0);
177 TPS_PDATA_INIT(ldo7, 1000, 3300, tps80031_rails(VIO), 0, 0, 0, -1, 0, 0, 0);
178 TPS_PDATA_INIT(ldoln, 1000, 3300, tps80031_rails(SMPS3), 0, 0, 0, -1, 0, 0, 0);
179 TPS_PDATA_INIT(ldousb, 1000, 3300, 0, 0, 0, 0, -1, 0, 0, USBLDO_INPUT_VSYS);
180 TPS_PDATA_INIT(vana,  1000, 3300, 0, 0, 0, 0, -1, 0, 0, 0);
181 TPS_PDATA_INIT(vbus,  0, 5000, 0, 0, 0, 0, -1, 0, 0, VBUS_SW_ONLY);
182
183 static struct tps80031_rtc_platform_data rtc_data = {
184         .irq = TPS80031_IRQ_BASE + TPS80031_INT_RTC_ALARM,
185         .time = {
186                 .tm_year = 2011,
187                 .tm_mon = 0,
188                 .tm_mday = 1,
189                 .tm_hour = 1,
190                 .tm_min = 2,
191                 .tm_sec = 3,
192         },
193 };
194
195 #define TPS_RTC()                               \
196         {                                               \
197                 .id     = 0,            \
198                 .name   = "rtc_tps80031",       \
199                 .platform_data = &rtc_data,     \
200         }
201
202 #define TPS_REG(_id, _data)                             \
203         {                                               \
204                 .id      = TPS80031_ID_##_id,           \
205                 .name   = "tps80031-regulator",         \
206                 .platform_data  = &pdata_##_data,       \
207         }
208
209 static struct tps80031_subdev_info tps80031_devs[] = {
210         TPS_REG(VIO, vio),
211         TPS_REG(SMPS1, smps1),
212         TPS_REG(SMPS2, smps2),
213         TPS_REG(SMPS3, smps3),
214         TPS_REG(SMPS4, smps4),
215         TPS_REG(LDO1, ldo1),
216         TPS_REG(LDO2, ldo2),
217         TPS_REG(LDO3, ldo3),
218         TPS_REG(LDO4, ldo4),
219         TPS_REG(LDO5, ldo5),
220         TPS_REG(LDO6, ldo6),
221         TPS_REG(LDO7, ldo7),
222         TPS_REG(LDOLN, ldoln),
223         TPS_REG(LDOUSB, ldousb),
224         TPS_REG(VANA, vana),
225         TPS_REG(VBUS, vbus),
226         TPS_RTC(),
227 };
228
229 struct tps80031_32kclock_plat_data clk32k_pdata = {
230         .en_clk32kg = 1,
231 };
232 static struct tps80031_platform_data tps_platform = {
233         .num_subdevs    = ARRAY_SIZE(tps80031_devs),
234         .subdevs        = tps80031_devs,
235         .irq_base       = TPS80031_IRQ_BASE,
236         .gpio_base      = TPS80031_GPIO_BASE,
237         .clk32k_pdata   = &clk32k_pdata,
238 };
239
240 static struct i2c_board_info __initdata enterprise_regulators[] = {
241         {
242                 I2C_BOARD_INFO("tps80031", 0x48),
243                 .irq            = INT_EXTERNAL_PMU,
244                 .platform_data  = &tps_platform,
245         },
246 };
247
248 /************************ GPIO based switch regulator ****************/
249
250 /* REGEN1 from PMU*/
251 static struct regulator_consumer_supply gpio_switch_pmu_5v15_en_supply[] = {
252         REGULATOR_SUPPLY("vdd_5v15", NULL),
253 };
254 static int gpio_switch_pmu_5v15_en_voltages[] = {5000};
255
256 /* REGEN2 from PMU*/
257 static struct regulator_consumer_supply gpio_switch_pmu_3v3_en_supply[] = {
258         REGULATOR_SUPPLY("avdd_usb_hdmi_3v3", NULL),
259         REGULATOR_SUPPLY("avdd_usb", NULL),
260         REGULATOR_SUPPLY("avdd_hdmi", NULL),
261         REGULATOR_SUPPLY("vdd_nct1008", NULL),
262 };
263 static int gpio_switch_pmu_3v3_en_voltages[] = {3300};
264
265 /* SYSEN from PMU*/
266 static struct regulator_consumer_supply gpio_switch_pmu_hdmi_5v0_en_supply[] = {
267         REGULATOR_SUPPLY("hdmi_5v0", NULL),
268 };
269 static int gpio_switch_pmu_hdmi_5v0_en_voltages[] = {5000};
270
271 /* LCD-D16 (GPIO M0) from T30*/
272 static struct regulator_consumer_supply gpio_switch_vdd_fuse_en_supply[] = {
273         REGULATOR_SUPPLY("vpp_fuse", NULL),
274 };
275 static int gpio_switch_vdd_fuse_en_voltages[] = {3300};
276
277 /* LCD-D17 (GPIO M1) from T30*/
278 static struct regulator_consumer_supply gpio_switch_sdmmc3_vdd_sel_supply[] = {
279         REGULATOR_SUPPLY("vddio_sdmmc3_2v85_1v8", NULL),
280         REGULATOR_SUPPLY("sdmmc3_compu_pu", NULL),
281         REGULATOR_SUPPLY("vddio_sdmmc3", NULL),
282 };
283 static int gpio_switch_sdmmc3_vdd_sel_voltages[] = {2850};
284
285 /* LCD-D23 (GPIO M7) from T30*/
286 static struct regulator_consumer_supply gpio_switch_cam_ldo_2v8_en_supply[] = {
287         REGULATOR_SUPPLY("vdd_2v8_cam", NULL),
288 };
289 static int gpio_switch_cam_ldo_2v8_en_voltages[] = {2800};
290
291 /* LCD-D9 (GPIO F1) from T30*/
292 static struct regulator_consumer_supply gpio_switch_cam_ldo_1v8_en_supply[] = {
293         REGULATOR_SUPPLY("vdd_1v8_cam", NULL),
294 };
295 static int gpio_switch_cam_ldo_1v8_en_voltages[] = {1800};
296
297 /* Macro for defining gpio switch regulator sub device data */
298 #define GREG_INIT(_id, _name, _input_supply, _gpio_nr, _active_low, \
299                         _init_state, _pg, _enable, _disable)            \
300         static struct gpio_switch_regulator_subdev_data gpio_pdata_##_name =  \
301         {                                                               \
302                 .regulator_name = "gpio-switch-"#_name,                 \
303                 .input_supply   = _input_supply,                        \
304                 .id             = _id,                                  \
305                 .gpio_nr        = _gpio_nr,                             \
306                 .pin_group      = _pg,                                  \
307                 .active_low     = _active_low,                          \
308                 .init_state     = _init_state,                          \
309                 .voltages       = gpio_switch_##_name##_voltages,       \
310                 .n_voltages     = ARRAY_SIZE(gpio_switch_##_name##_voltages), \
311                 .num_consumer_supplies =                                \
312                                 ARRAY_SIZE(gpio_switch_##_name##_supply), \
313                 .consumer_supplies = gpio_switch_##_name##_supply,      \
314                 .constraints = {                                        \
315                         .valid_modes_mask = (REGULATOR_MODE_NORMAL |    \
316                                         REGULATOR_MODE_STANDBY),        \
317                         .valid_ops_mask = (REGULATOR_CHANGE_MODE |      \
318                                         REGULATOR_CHANGE_STATUS |       \
319                                         REGULATOR_CHANGE_VOLTAGE),      \
320                 },                                                      \
321                 .enable_rail = _enable,                                 \
322                 .disable_rail = _disable,                               \
323         }
324
325 GREG_INIT(0, pmu_5v15_en,     NULL,      TPS80031_GPIO_REGEN1, false, 0, 0, 0, 0);
326 GREG_INIT(1, pmu_3v3_en,      "vdd_5v15", TPS80031_GPIO_REGEN2, false, 0, 0, 0, 0);
327 GREG_INIT(2, pmu_hdmi_5v0_en, "vdd_5v15", TPS80031_GPIO_SYSEN, false, 0, 0, 0, 0);
328
329 GREG_INIT(3, vdd_fuse_en,    "avdd_usb_hdmi_3v3", TEGRA_GPIO_PM0, false, 0, 0, 0, 0);
330 GREG_INIT(4, sdmmc3_vdd_sel, "vddio_sdmmc_2v85", TEGRA_GPIO_PM1, false, 0, 0, 0, 0);
331 GREG_INIT(5, cam_ldo_2v8_en,    NULL, TEGRA_GPIO_PM7, false, 0, 0, 0, 0);
332 GREG_INIT(6, cam_ldo_1v8_en,    NULL, TEGRA_GPIO_PF1, false, 0, 0, 0, 0);
333
334 #define ADD_GPIO_REG(_name)     (&gpio_pdata_##_name)
335 static struct gpio_switch_regulator_subdev_data *gswitch_subdevs[] = {
336         ADD_GPIO_REG(pmu_5v15_en),
337         ADD_GPIO_REG(pmu_3v3_en),
338         ADD_GPIO_REG(pmu_hdmi_5v0_en),
339         ADD_GPIO_REG(vdd_fuse_en),
340         ADD_GPIO_REG(sdmmc3_vdd_sel),
341         ADD_GPIO_REG(cam_ldo_2v8_en),
342         ADD_GPIO_REG(cam_ldo_1v8_en),
343 };
344
345 static struct gpio_switch_regulator_platform_data  gswitch_pdata = {
346         .num_subdevs = ARRAY_SIZE(gswitch_subdevs),
347         .subdevs = gswitch_subdevs,
348 };
349
350 static struct platform_device gswitch_regulator_pdata = {
351         .name   = "gpio-switch-regulator",
352         .id     = -1,
353         .dev    = {
354                 .platform_data = &gswitch_pdata,
355         },
356 };
357
358 static int __init enterprise_gpio_switch_regulator_init(void)
359 {
360         int i;
361         for (i = 0; i < gswitch_pdata.num_subdevs; ++i) {
362                 struct gpio_switch_regulator_subdev_data *gswitch_data =
363                                                 gswitch_pdata.subdevs[i];
364                 if (gswitch_data->gpio_nr <= TEGRA_NR_GPIOS)
365                         tegra_gpio_enable(gswitch_data->gpio_nr);
366         }
367         return platform_device_register(&gswitch_regulator_pdata);
368 }
369
370 static void enterprise_power_off(void)
371 {
372         int ret;
373         pr_info("enterprise: Powering off the device\n");
374         ret = tps80031_power_off();
375         if (ret)
376                 pr_err("enterprise: failed to power off\n");
377         while(1);
378 }
379
380 int __init enterprise_regulator_init(void)
381 {
382         void __iomem *pmc = IO_ADDRESS(TEGRA_PMC_BASE);
383         u32 pmc_ctrl;
384
385         /* configure the power management controller to trigger PMU
386          * interrupts when low */
387
388         pmc_ctrl = readl(pmc + PMC_CTRL);
389         writel(pmc_ctrl | PMC_CTRL_INTR_LOW, pmc + PMC_CTRL);
390
391         i2c_register_board_info(4, enterprise_regulators, 1);
392         enterprise_gpio_switch_regulator_init();
393         pm_power_off = enterprise_power_off;
394         return 0;
395 }
396
397 static struct tegra_suspend_platform_data enterprise_suspend_data = {
398         .cpu_timer      = 2000,
399         .cpu_off_timer  = 200,
400         .suspend_mode   = TEGRA_SUSPEND_LP1,
401         .core_timer     = 0x7e7e,
402         .core_off_timer = 0,
403         .corereq_high   = true,
404         .sysclkreq_high = true,
405 };
406
407 int __init enterprise_suspend_init(void)
408 {
409         tegra_init_suspend(&enterprise_suspend_data);
410         return 0;
411 }