2 * intel_pmic_bxtwc.c - Intel BXT WhiskeyCove PMIC operation region driver
4 * Copyright (C) 2015 Intel Corporation. All rights reserved.
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License version
8 * 2 as published by the Free Software Foundation.
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.
16 #include <linux/init.h>
17 #include <linux/acpi.h>
18 #include <linux/mfd/intel_soc_pmic.h>
19 #include <linux/regmap.h>
20 #include <linux/platform_device.h>
21 #include "intel_pmic.h"
23 #define WHISKEY_COVE_ALRT_HIGH_BIT_MASK 0x0F
24 #define WHISKEY_COVE_ADC_HIGH_BIT(x) (((x & 0x0F) << 8))
25 #define WHISKEY_COVE_ADC_CURSRC(x) (((x & 0xF0) >> 4))
26 #define VR_MODE_DISABLED 0
27 #define VR_MODE_AUTO BIT(0)
28 #define VR_MODE_NORMAL BIT(1)
29 #define VR_MODE_SWITCH BIT(2)
30 #define VR_MODE_ECO (BIT(0)|BIT(1))
31 #define VSWITCH2_OUTPUT BIT(5)
32 #define VSWITCH1_OUTPUT BIT(4)
33 #define VUSBPHY_CHARGE BIT(1)
35 static struct pmic_table power_table[] = {
40 }, /* VDD1 -> VDD1CNT */
45 }, /* VDD2 -> VDD2CNT */
50 }, /* VDD3 -> VDD3CNT */
55 }, /* VLFX -> VFLEXCNT */
59 .bit = VR_MODE_NORMAL,
60 }, /* VP1A -> VPROG1ACNT */
64 .bit = VR_MODE_NORMAL,
65 }, /* VP1B -> VPROG1BCNT */
69 .bit = VR_MODE_NORMAL,
70 }, /* VP1C -> VPROG1CCNT */
74 .bit = VR_MODE_NORMAL,
75 }, /* VP1D -> VPROG1DCNT */
79 .bit = VR_MODE_NORMAL,
80 }, /* VP2A -> VPROG2ACNT */
84 .bit = VR_MODE_NORMAL,
85 }, /* VP2B -> VPROG2BCNT */
89 .bit = VR_MODE_NORMAL,
90 }, /* VP2C -> VPROG2CCNT */
94 .bit = VR_MODE_NORMAL,
95 }, /* VP3A -> VPROG3ACNT */
99 .bit = VR_MODE_NORMAL,
100 }, /* VP3B -> VPROG3BCNT */
104 .bit = VSWITCH2_OUTPUT,
105 }, /* VSW2 -> VLD0CNT Bit 5*/
109 .bit = VSWITCH1_OUTPUT,
110 }, /* VSW1 -> VLD0CNT Bit 4 */
114 .bit = VUSBPHY_CHARGE,
115 }, /* VUPY -> VLDOCNT Bit 1 */
119 .bit = VR_MODE_NORMAL,
120 }, /* VRSO -> VREFSOCCNT*/
124 .bit = VR_MODE_NORMAL,
125 }, /* VP1E -> VPROG1ECNT */
129 .bit = VR_MODE_NORMAL,
130 }, /* VP1F -> VPROG1FCNT */
134 .bit = VR_MODE_NORMAL,
135 }, /* VP2D -> VPROG2DCNT */
139 .bit = VR_MODE_NORMAL,
140 }, /* VP4A -> VPROG4ACNT */
144 .bit = VR_MODE_NORMAL,
145 }, /* VP4B -> VPROG4BCNT */
149 .bit = VR_MODE_NORMAL,
150 }, /* VP4C -> VPROG4CCNT */
154 .bit = VR_MODE_NORMAL,
155 }, /* VP4D -> VPROG4DCNT */
159 .bit = VR_MODE_NORMAL,
160 }, /* VP5A -> VPROG5ACNT */
164 .bit = VR_MODE_NORMAL,
165 }, /* VP5B -> VPROG5BCNT */
169 .bit = VR_MODE_NORMAL,
170 }, /* VP6A -> VPROG6ACNT */
174 .bit = VR_MODE_NORMAL,
175 }, /* VP6B -> VPROG6BCNT */
180 }, /* SDWN_N -> MODEMCTRL Bit 2 */
185 } /* MOFF -> MODEMCTRL Bit 0 */
188 static struct pmic_table thermal_table[] = {
281 static int intel_bxtwc_pmic_get_power(struct regmap *regmap, int reg,
286 if (regmap_read(regmap, reg, &data))
289 *value = (data & bit) ? 1 : 0;
293 static int intel_bxtwc_pmic_update_power(struct regmap *regmap, int reg,
303 return regmap_update_bits(regmap, reg, mask, val);
306 static int intel_bxtwc_pmic_get_raw_temp(struct regmap *regmap, int reg)
308 unsigned int val, adc_val, reg_val;
309 u8 temp_l, temp_h, cursrc;
311 static const unsigned long rlsb_array[] = {
312 0, 260420, 130210, 65100, 32550, 16280,
313 8140, 4070, 2030, 0, 260420, 130210 };
315 if (regmap_read(regmap, reg, &val))
319 if (regmap_read(regmap, (reg - 1), &val))
323 reg_val = temp_l | WHISKEY_COVE_ADC_HIGH_BIT(temp_h);
324 cursrc = WHISKEY_COVE_ADC_CURSRC(temp_h);
325 rlsb = rlsb_array[cursrc];
326 adc_val = reg_val * rlsb / 1000;
332 intel_bxtwc_pmic_update_aux(struct regmap *regmap, int reg, int raw)
335 u16 resi_val, count = 0, thrsh = 0;
336 u8 alrt_h, alrt_l, cursel = 0;
341 count = fls(bsr_num) - 1;
343 cursel = clamp_t(s8, (count - 7), 0, 7);
344 thrsh = raw / (1 << (4 + cursel));
346 resi_val = (cursel << 9) | thrsh;
347 alrt_h = (resi_val >> 8) & WHISKEY_COVE_ALRT_HIGH_BIT_MASK;
348 if (regmap_update_bits(regmap,
350 WHISKEY_COVE_ALRT_HIGH_BIT_MASK,
354 alrt_l = (u8)resi_val;
355 return regmap_write(regmap, reg, alrt_l);
359 intel_bxtwc_pmic_get_policy(struct regmap *regmap, int reg, int bit, u64 *value)
364 if (regmap_read(regmap, reg, &val))
367 *value = (val & mask) >> bit;
372 intel_bxtwc_pmic_update_policy(struct regmap *regmap,
373 int reg, int bit, int enable)
375 u8 mask = BIT(bit), val = enable << bit;
377 return regmap_update_bits(regmap, reg, mask, val);
380 static struct intel_pmic_opregion_data intel_bxtwc_pmic_opregion_data = {
381 .get_power = intel_bxtwc_pmic_get_power,
382 .update_power = intel_bxtwc_pmic_update_power,
383 .get_raw_temp = intel_bxtwc_pmic_get_raw_temp,
384 .update_aux = intel_bxtwc_pmic_update_aux,
385 .get_policy = intel_bxtwc_pmic_get_policy,
386 .update_policy = intel_bxtwc_pmic_update_policy,
387 .power_table = power_table,
388 .power_table_count = ARRAY_SIZE(power_table),
389 .thermal_table = thermal_table,
390 .thermal_table_count = ARRAY_SIZE(thermal_table),
393 static int intel_bxtwc_pmic_opregion_probe(struct platform_device *pdev)
395 struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent);
397 return intel_pmic_install_opregion_handler(&pdev->dev,
398 ACPI_HANDLE(pdev->dev.parent),
400 &intel_bxtwc_pmic_opregion_data);
403 static struct platform_device_id bxt_wc_opregion_id_table[] = {
404 { .name = "bxt_wcove_region" },
408 static struct platform_driver intel_bxtwc_pmic_opregion_driver = {
409 .probe = intel_bxtwc_pmic_opregion_probe,
411 .name = "bxt_whiskey_cove_pmic",
413 .id_table = bxt_wc_opregion_id_table,
416 static int __init intel_bxtwc_pmic_opregion_driver_init(void)
418 return platform_driver_register(&intel_bxtwc_pmic_opregion_driver);
420 device_initcall(intel_bxtwc_pmic_opregion_driver_init);