1 /* SPDX-License-Identifier: GPL-2.0-only */
2
3 #include <acpi/acpi.h>
4 #include <console/console.h>
5 #include <device/device.h>
6 #include <device/pnp.h>
7 #include <ec/acpi/ec.h>
8 #include <stdio.h>
9 #include <string.h>
10 #include <smbios.h>
11 #include <option.h>
12 #include <pc80/keyboard.h>
13 #include <types.h>
14
15 #include "h8.h"
16 #include "chip.h"
17
h8_trackpoint_enable(int on)18 void h8_trackpoint_enable(int on)
19 {
20 ec_write(H8_TRACKPOINT_CTRL,
21 on ? H8_TRACKPOINT_ON : H8_TRACKPOINT_OFF);
22 }
23
24 /* Controls radio-off pin in WLAN MiniPCIe slot. */
h8_wlan_enable(int on)25 void h8_wlan_enable(int on)
26 {
27 if (on)
28 ec_set_bit(0x3a, 5);
29 else
30 ec_clr_bit(0x3a, 5);
31 }
32
33 /* Controls radio-off pin in UWB MiniPCIe slot. */
h8_uwb_enable(int on)34 static void h8_uwb_enable(int on)
35 {
36 if (on)
37 ec_set_bit(0x31, 2);
38 else
39 ec_clr_bit(0x31, 2);
40 }
41
h8_fn_ctrl_swap(int on)42 static void h8_fn_ctrl_swap(int on)
43 {
44 if (on)
45 ec_set_bit(0xce, 4);
46 else
47 ec_clr_bit(0xce, 4);
48 }
49
50 enum battery {
51 SECONDARY_BATTERY = 0,
52 PRIMARY_BATTERY = 1,
53 };
54
55 /* h8 charge priority. Defines if primary or secondary
56 * battery is charged first.
57 * Because NVRAM is complete the other way around as this register,
58 * it's inverted by if
59 */
h8_charge_priority(enum battery battery)60 static void h8_charge_priority(enum battery battery)
61 {
62 if (battery == PRIMARY_BATTERY)
63 ec_clr_bit(0x0, 4);
64 else
65 ec_set_bit(0x0, 4);
66 }
67
h8_sticky_fn(int on)68 static void h8_sticky_fn(int on)
69 {
70 if (on)
71 ec_set_bit(0x0, 3);
72 else
73 ec_clr_bit(0x0, 3);
74 }
75
f1_to_f12_as_primary(int on)76 static void f1_to_f12_as_primary(int on)
77 {
78 if (on)
79 ec_set_bit(0x3b, 3);
80 else
81 ec_clr_bit(0x3b, 3);
82 }
83
h8_log_ec_version(void)84 static void h8_log_ec_version(void)
85 {
86 char ecfw[17];
87 u8 len;
88 u16 fwvh, fwvl;
89
90 len = h8_build_id_and_function_spec_version(ecfw, sizeof(ecfw) - 1);
91 ecfw[len] = 0;
92
93 fwvh = ec_read(0xe9);
94 fwvl = ec_read(0xe8);
95
96 printk(BIOS_INFO, "H8: EC Firmware ID %s, Version %d.%d%d%c\n", ecfw,
97 fwvh >> 4, fwvh & 0x0f, fwvl >> 4, 0x41 + (fwvl & 0xf));
98 }
99
h8_set_audio_mute(int mute)100 void h8_set_audio_mute(int mute)
101 {
102 if (mute)
103 ec_set_bit(0x3a, 0);
104 else
105 ec_clr_bit(0x3a, 0);
106 }
107
h8_enable_event(int event)108 void h8_enable_event(int event)
109 {
110 if (event < 0 || event > 127)
111 return;
112
113 ec_set_bit(0x10 + (event >> 3), event & 7);
114 }
115
h8_disable_event(int event)116 void h8_disable_event(int event)
117 {
118 if (event < 0 || event > 127)
119 return;
120
121 ec_clr_bit(0x10 + (event >> 3), event & 7);
122 }
123
h8_usb_always_on_enable(enum usb_always_on on)124 void h8_usb_always_on_enable(enum usb_always_on on)
125 {
126 u8 val;
127
128 switch (on) {
129 case UAO_OFF:
130 val = ec_read(H8_USB_ALWAYS_ON);
131 // Clear bits 0,2,3
132 val &= ~(H8_USB_ALWAYS_ON_ENABLE | H8_USB_ALWAYS_ON_AC_ONLY);
133 ec_write(H8_USB_ALWAYS_ON, val);
134 break;
135
136 case UAO_AC_AND_BATTERY:
137 val = ec_read(H8_USB_ALWAYS_ON);
138 val |= H8_USB_ALWAYS_ON_ENABLE; // Set bit 0
139 val &= ~H8_USB_ALWAYS_ON_AC_ONLY; // Clear bits 2 and 3
140 ec_write(H8_USB_ALWAYS_ON, val);
141 break;
142
143 case UAO_AC_ONLY:
144 val = ec_read(H8_USB_ALWAYS_ON);
145 // Set bits 0,2,3
146 val |= (H8_USB_ALWAYS_ON_ENABLE | H8_USB_ALWAYS_ON_AC_ONLY);
147 ec_write(H8_USB_ALWAYS_ON, val);
148 break;
149 }
150 }
151
h8_usb_power_enable(int onoff)152 void h8_usb_power_enable(int onoff)
153 {
154 if (onoff)
155 ec_set_bit(0x3b, 4);
156 else
157 ec_clr_bit(0x3b, 4);
158 }
159
h8_ultrabay_device_present(void)160 int h8_ultrabay_device_present(void)
161 {
162 return ec_read(H8_STATUS1) & 0x5 ? 0 : 1;
163 }
164
h8_build_id_and_function_spec_version(char * buf,u8 buf_len)165 u8 h8_build_id_and_function_spec_version(char *buf, u8 buf_len)
166 {
167 u8 i, c;
168 char str[16 + 1]; /* 16 ASCII chars + \0 */
169
170 /* Build ID */
171 for (i = 0; i < 8; i++) {
172 c = ec_read(0xf0 + i);
173 if (c < 0x20 || c > 0x7f) {
174 i = snprintf(str, sizeof(str), "*INVALID");
175 break;
176 }
177 str[i] = c;
178 }
179
180 /* EC firmware function specification version */
181 i += snprintf(str + i, sizeof(str) - i, "-%u.%u", ec_read(0xef), ec_read(0xeb));
182
183 i = MIN(buf_len, i);
184 memcpy(buf, str, i);
185
186 return i;
187 }
188
189 #if CONFIG(GENERATE_SMBIOS_TABLES)
h8_smbios_strings(struct device * dev,struct smbios_type11 * t)190 static void h8_smbios_strings(struct device *dev, struct smbios_type11 *t)
191 {
192 char tpec[] = "IBM ThinkPad Embedded Controller -[ ]-";
193
194 h8_build_id_and_function_spec_version(tpec + 35, 17);
195
196 t->count = smbios_add_string(t->eos, tpec);
197 }
198 #endif
199
h8_init(struct device * dev)200 static void h8_init(struct device *dev)
201 {
202 pc_keyboard_init(NO_AUX_DEVICE);
203 }
204
205 #if CONFIG(HAVE_ACPI_TABLES)
h8_acpi_name(const struct device * dev)206 static const char *h8_acpi_name(const struct device *dev)
207 {
208 return "EC";
209 }
210 #endif
211
212 struct device_operations h8_dev_ops = {
213 #if CONFIG(GENERATE_SMBIOS_TABLES)
214 .get_smbios_strings = h8_smbios_strings,
215 #endif
216 #if CONFIG(HAVE_ACPI_TABLES)
217 .acpi_fill_ssdt = h8_ssdt_generator,
218 .acpi_name = h8_acpi_name,
219 #endif
220 .init = h8_init,
221 };
222
h8_mb_init(void)223 void __weak h8_mb_init(void){ /* NOOP */ }
224
h8_enable(struct device * dev)225 static void h8_enable(struct device *dev)
226 {
227 struct ec_lenovo_h8_config *conf = dev->chip_info;
228 u8 val;
229 u8 beepmask0, beepmask1, reg8;
230
231 dev->ops = &h8_dev_ops;
232
233 ec_clear_out_queue();
234 h8_log_ec_version();
235
236 /* Always enable I/O range 0x1600-0x160f and thermal management */
237 reg8 = conf->config0;
238 reg8 |= H8_CONFIG0_SMM_H8_ENABLE;
239 reg8 |= H8_CONFIG0_TC_ENABLE;
240 ec_write(H8_CONFIG0, reg8);
241
242 reg8 = conf->config1;
243 if (conf->has_keyboard_backlight) {
244 /* Default to both backlights */
245 reg8 = (reg8 & 0xf3) | ((get_uint_option("backlight", 0) & 0x3) << 2);
246 }
247 ec_write(H8_CONFIG1, reg8);
248 ec_write(H8_CONFIG2, conf->config2);
249 ec_write(H8_CONFIG3, conf->config3);
250
251 beepmask0 = conf->beepmask0;
252 beepmask1 = conf->beepmask1;
253
254 if (conf->has_power_management_beeps) {
255 if (get_uint_option("power_management_beeps", 1) == 0) {
256 beepmask0 = 0x00;
257 beepmask1 = 0x00;
258 }
259 }
260
261 if (conf->has_power_management_beeps) {
262 if (get_uint_option("low_battery_beep", 1))
263 beepmask0 |= 2;
264 else
265 beepmask0 &= ~2;
266 }
267
268 ec_write(H8_SOUND_ENABLE0, beepmask0);
269 ec_write(H8_SOUND_ENABLE1, beepmask1);
270
271 /* silence sounds in queue */
272 ec_write(H8_SOUND_REPEAT, 0x00);
273 ec_write(H8_SOUND_REG, 0x00);
274
275 ec_write(0x10, conf->event0_enable);
276 ec_write(0x11, conf->event1_enable);
277 ec_write(0x12, conf->event2_enable);
278 ec_write(0x13, conf->event3_enable);
279 ec_write(0x14, conf->event4_enable);
280 ec_write(0x15, conf->event5_enable);
281 ec_write(0x16, conf->event6_enable);
282 ec_write(0x17, conf->event7_enable);
283 ec_write(0x18, conf->event8_enable);
284 ec_write(0x19, conf->event9_enable);
285 ec_write(0x1a, conf->eventa_enable);
286 ec_write(0x1b, conf->eventb_enable);
287 ec_write(0x1c, conf->eventc_enable);
288 ec_write(0x1d, conf->eventd_enable);
289 ec_write(0x1e, conf->evente_enable);
290 ec_write(0x1f, conf->eventf_enable);
291
292 ec_write(H8_FAN_CONTROL, H8_FAN_CONTROL_AUTO);
293
294 h8_usb_always_on_enable(get_uint_option("usb_always_on", 0));
295
296 h8_wlan_enable(get_uint_option("wlan", 1));
297
298 h8_trackpoint_enable(1);
299 h8_usb_power_enable(1);
300
301 unsigned int volume = get_uint_option("volume", ~0);
302 if (volume <= 0xff && !acpi_is_wakeup_s3())
303 ec_write(H8_VOLUME_CONTROL, volume);
304
305 val = (CONFIG(H8_SUPPORT_BT_ON_WIFI) || h8_has_bdc(dev)) &&
306 h8_bluetooth_nv_enable();
307 h8_bluetooth_enable(val);
308
309 val = h8_has_wwan(dev) && h8_wwan_nv_enable();
310 h8_wwan_enable(val);
311
312 if (conf->has_uwb)
313 h8_uwb_enable(get_uint_option("uwb", 1));
314
315 h8_fn_ctrl_swap(get_uint_option("fn_ctrl_swap", CONFIG(H8_FN_CTRL_SWAP)));
316
317 h8_sticky_fn(get_uint_option("sticky_fn", 0));
318
319 if (CONFIG(H8_HAS_PRIMARY_FN_KEYS))
320 f1_to_f12_as_primary(get_uint_option("f1_to_f12_as_primary", 1));
321
322 h8_charge_priority(get_uint_option("first_battery", PRIMARY_BATTERY));
323
324 h8_set_audio_mute(0);
325 h8_mb_init();
326 }
327
328 struct chip_operations ec_lenovo_h8_ops = {
329 .name = "Lenovo H8 EC",
330 .enable_dev = h8_enable,
331 };
332