usb2422.c
15411 bytes
1/* Copyright 2021 QMK
2 *
3 * This program is free software: you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation, either version 3 of the License, or
6 * (at your option) any later version.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16#include <string.h>
17#include "usb2422.h"
18#include "i2c_master.h"
19#include "wait.h"
20#include "gpio.h"
21
22/* -------- USB2422_VID : (USB2422L Offset: 0x00) (R/W 16) Vendor ID -------- */
23typedef union {
24 struct {
25 uint16_t VID_LSB : 8;
26 uint16_t VID_MSB : 8;
27 } bit; /*!< Structure used for bit access */
28 uint16_t reg; /*!< Type used for register access */
29} USB2422_VID_Type;
30
31/* -------- USB2422_PID : (USB2422L Offset: 0x02) (R/W 16) Product ID -------- */
32typedef union {
33 struct {
34 uint16_t PID_LSB : 8;
35 uint16_t PID_MSB : 8;
36 } bit; /*!< Structure used for bit access */
37 uint16_t reg; /*!< Type used for register access */
38} USB2422_PID_Type;
39
40/* -------- USB2422_DID : (USB2422L Offset: 0x04) (R/W 16) Device ID -------- */
41typedef union {
42 struct {
43 uint16_t DID_LSB : 8;
44 uint16_t DID_MSB : 8;
45 } bit; /*!< Structure used for bit access */
46 uint16_t reg; /*!< Type used for register access */
47} USB2422_DID_Type;
48
49/* -------- USB2422_CFG1 : (USB2422L Offset: 0x06) (R/W 8) Configuration Data Byte 1-------- */
50typedef union {
51 struct {
52 uint8_t PORT_PWR : 1;
53 uint8_t CURRENT_SNS : 2;
54 uint8_t EOP_DISABLE : 1;
55 uint8_t MTT_ENABLE : 1;
56 uint8_t HS_DISABLE : 1;
57 uint8_t : 1;
58 uint8_t SELF_BUS_PWR : 1;
59 } bit; /*!< Structure used for bit access */
60 uint8_t reg; /*!< Type used for register access */
61} USB2422_CFG1_Type;
62
63/* -------- USB2422_CFG2 : (USB2422L Offset: 0x07) (R/W 8) Configuration Data Byte 2-------- */
64typedef union {
65 struct {
66 uint8_t : 3;
67 uint8_t COMPOUND : 1;
68 uint8_t OC_TIMER : 2;
69 uint8_t : 1;
70 uint8_t DYNAMIC : 1;
71 } bit; /*!< Structure used for bit access */
72 uint8_t reg; /*!< Type used for register access */
73} USB2422_CFG2_Type;
74
75/* -------- USB2422_CFG3 : (USB2422L Offset: 0x08) (R/W 16) Configuration Data Byte 3-------- */
76typedef union {
77 struct {
78 uint8_t STRING_EN : 1;
79 uint8_t : 2;
80 uint8_t PRTMAP_EN : 1;
81 uint8_t : 4;
82 } bit; /*!< Structure used for bit access */
83 uint8_t reg; /*!< Type used for register access */
84} USB2422_CFG3_Type;
85
86/* -------- USB2422_NRD : (USB2422L Offset: 0x09) (R/W 8) Non Removable Device -------- */
87typedef union {
88 struct {
89 uint8_t : 5;
90 uint8_t PORT2_NR : 1;
91 uint8_t PORT1_NR : 1;
92 uint8_t : 1;
93 } bit; /*!< Structure used for bit access */
94 uint8_t reg; /*!< Type used for register access */
95} USB2422_NRD_Type;
96
97/* -------- USB2422_PDS : (USB2422L Offset: 0x0A) (R/W 8) Port Diable for Self-Powered Operation -------- */
98typedef union {
99 struct {
100 uint8_t : 1;
101 uint8_t PORT1_DIS : 1;
102 uint8_t PORT2_DIS : 1;
103 uint8_t : 5;
104 } bit; /*!< Structure used for bit access */
105 uint8_t reg; /*!< Type used for register access */
106} USB2422_PDS_Type;
107
108/* -------- USB2422_PDB : (USB2422L Offset: 0x0B) (R/W 8) Port Diable for Bus-Powered Operation -------- */
109
110typedef union {
111 struct {
112 uint8_t : 1;
113 uint8_t PORT1_DIS : 1;
114 uint8_t PORT2_DIS : 1;
115 uint8_t : 5;
116 } bit; /*!< Structure used for bit access */
117 uint8_t reg; /*!< Type used for register access */
118} USB2422_PDB_Type;
119
120/* -------- USB2422_MAXPS : (USB2422L Offset: 0x0C) (R/W 8) Max Power for Self-Powered Operation -------- */
121typedef union {
122 struct {
123 uint8_t MAX_PWR_SP : 8;
124 } bit; /*!< Structure used for bit access */
125 uint8_t reg; /*!< Type used for register access */
126} USB2422_MAXPS_Type;
127
128/* -------- USB2422_MAXPB : (USB2422L Offset: 0x0D) (R/W 8) Max Power for Bus-Powered Operation -------- */
129typedef union {
130 struct {
131 uint8_t MAX_PWR_BP : 8;
132 } bit; /*!< Structure used for bit access */
133 uint8_t reg; /*!< Type used for register access */
134} USB2422_MAXPB_Type;
135
136/* -------- USB2422_HCMCS : (USB2422L Offset: 0x0E) (R/W 8) Hub Controller Max Current for Self-Powered Operation -------- */
137typedef union {
138 struct {
139 uint8_t HC_MAX_C_SP : 8;
140 } bit; /*!< Structure used for bit access */
141 uint8_t reg; /*!< Type used for register access */
142} USB2422_HCMCS_Type;
143
144/* -------- USB2422_HCMCB : (USB2422L Offset: 0x0F) (R/W 8) Hub Controller Max Current for Bus-Powered Operation -------- */
145typedef union {
146 struct {
147 uint8_t HC_MAX_C_BP : 8;
148 } bit; /*!< Structure used for bit access */
149 uint8_t reg; /*!< Type used for register access */
150} USB2422_HCMCB_Type;
151
152/* -------- USB2422_PWRT : (USB2422L Offset: 0x10) (R/W 8) Power On Time -------- */
153typedef union {
154 struct {
155 uint8_t POWER_ON_TIME : 8;
156 } bit; /*!< Structure used for bit access */
157 uint8_t reg; /*!< Type used for register access */
158} USB2422_PWRT_Type;
159
160/* -------- USB2422_LANGID LSB : (USB2422L Offset: 0x11) (R/W 16) Language ID -------- */
161typedef union {
162 struct {
163 uint8_t LANGID_LSB : 8;
164 } bit; /*!< Structure used for bit access */
165 uint8_t reg; /*!< Type used for register access */
166} USB2422_LANGID_LSB_Type;
167
168/* -------- USB2422_LANGID MSB : (USB2422L Offset: 0x12) (R/W 16) Language ID -------- */
169typedef union {
170 struct {
171 uint8_t LANGID_MSB : 8;
172 } bit; /*!< Structure used for bit access */
173 uint8_t reg; /*!< Type used for register access */
174} USB2422_LANGID_MSB_Type;
175
176/* -------- USB2422_MFRSL : (USB2422L Offset: 0x13) (R/W 8) Manufacturer String Length -------- */
177typedef union {
178 struct {
179 uint8_t MFR_STR_LEN : 8;
180 } bit; /*!< Structure used for bit access */
181 uint8_t reg; /*!< Type used for register access */
182} USB2422_MFRSL_Type;
183
184/* -------- USB2422_PRDSL : (USB2422L Offset: 0x14) (R/W 8) Product String Length -------- */
185typedef union {
186 struct {
187 uint8_t PRD_STR_LEN : 8;
188 } bit; /*!< Structure used for bit access */
189 uint8_t reg; /*!< Type used for register access */
190} USB2422_PRDSL_Type;
191
192/* -------- USB2422_SERSL : (USB2422L Offset: 0x15) (R/W 8) Serial String Length -------- */
193typedef union {
194 struct {
195 uint8_t SER_STR_LEN : 8;
196 } bit; /*!< Structure used for bit access */
197 uint8_t reg; /*!< Type used for register access */
198} USB2422_SERSL_Type;
199
200/* -------- USB2422_MFRSTR : (USB2422L Offset: 0x16-53) (R/W 8) Maufacturer String -------- */
201typedef uint16_t USB2422_MFRSTR_Type;
202
203/* -------- USB2422_PRDSTR : (USB2422L Offset: 0x54-91) (R/W 8) Product String -------- */
204typedef uint16_t USB2422_PRDSTR_Type;
205
206/* -------- USB2422_SERSTR : (USB2422L Offset: 0x92-CF) (R/W 8) Serial String -------- */
207typedef uint16_t USB2422_SERSTR_Type;
208
209/* -------- USB2422_BCEN : (USB2422L Offset: 0xD0) (R/W 8) Battery Charging Enable -------- */
210
211typedef union {
212 struct {
213 uint8_t : 1;
214 uint8_t PORT1_BCE : 1;
215 uint8_t PORT2_BCE : 1;
216 uint8_t : 5;
217 } bit; /*!< Structure used for bit access */
218 uint8_t reg; /*!< Type used for register access */
219} USB2422_BCEN_Type;
220
221/* -------- USB2422_BOOSTUP : (USB2422L Offset: 0xF6) (R/W 8) Boost Upstream -------- */
222typedef union {
223 struct {
224 uint8_t BOOST : 2;
225 uint8_t : 6;
226 } bit; /*!< Structure used for bit access */
227 uint8_t reg; /*!< Type used for register access */
228} USB2422_BOOSTUP_Type;
229
230/* -------- USB2422_BOOSTDOWN : (USB2422L Offset: 0xF8) (R/W 8) Boost Downstream -------- */
231typedef union {
232 struct {
233 uint8_t BOOST1 : 2;
234 uint8_t BOOST2 : 2;
235 uint8_t : 4;
236 } bit; /*!< Structure used for bit access */
237 uint8_t reg; /*!< Type used for register access */
238} USB2422_BOOSTDOWN_Type;
239
240/* -------- USB2422_PRTSP : (USB2422L Offset: 0xFA) (R/W 8) Port Swap -------- */
241typedef union {
242 struct {
243 uint8_t : 1;
244 uint8_t PORT1_SP : 1;
245 uint8_t PORT2_SP : 1;
246 uint8_t : 5;
247 } bit; /*!< Structure used for bit access */
248 uint8_t reg; /*!< Type used for register access */
249} USB2422_PRTSP_Type;
250
251/* -------- USB2422_PRTR12 : (USB2422L Offset: 0xFB) (R/W 8) Port 1/2 Remap -------- */
252typedef union {
253 struct {
254 uint8_t PORT1_REMAP : 4;
255 uint8_t PORT2_REMAP : 4;
256 } bit; /*!< Structure used for bit access */
257 uint8_t reg; /*!< Type used for register access */
258} USB2422_PRTR12_Type;
259
260#define USB2422_PRTR12_DISABLE 0
261#define USB2422_PRT12_P2TOL1 1
262#define USB2422_PRT12_P2XTOL2 2
263#define USB2422_PRT12_P1TOL1 1
264#define USB2422_PRT12_P1XTOL2 2
265
266/* -------- USB2422_STCD : (USB2422L Offset: 0xFF) (R/W 8) Status Command -------- */
267typedef union {
268 struct {
269 uint8_t USB_ATTACH : 1;
270 uint8_t RESET : 1;
271 uint8_t INTF_PWRDN : 1;
272 uint8_t : 5;
273 } bit; /*!< Structure used for bit access */
274 uint8_t reg; /*!< Type used for register access */
275} USB2422_STCD_Type;
276
277/** \brief USB2422 device hardware registers */
278typedef struct {
279 USB2422_VID_Type VID; /**< \brief Offset: 0x00*/
280 USB2422_PID_Type PID; /**< \brief Offset: 0x02*/
281 USB2422_DID_Type DID; /**< \brief Offset: 0x04*/
282 USB2422_CFG1_Type CFG1; /**< \brief Offset: 0x06*/
283 USB2422_CFG2_Type CFG2; /**< \brief Offset: 0x07*/
284 USB2422_CFG3_Type CFG3; /**< \brief Offset: 0x08*/
285 USB2422_NRD_Type NRD; /**< \brief Offset: 0x09*/
286 USB2422_PDS_Type PDS; /**< \brief Offset: 0x0A*/
287 USB2422_PDB_Type PDB; /**< \brief Offset: 0x0B*/
288 USB2422_MAXPS_Type MAXPS; /**< \brief Offset: 0x0C*/
289 USB2422_MAXPB_Type MAXPB; /**< \brief Offset: 0x0D*/
290 USB2422_HCMCS_Type HCMCS; /**< \brief Offset: 0x0E*/
291 USB2422_HCMCB_Type HCMCB; /**< \brief Offset: 0x0F*/
292 USB2422_PWRT_Type PWRT; /**< \brief Offset: 0x10*/
293 USB2422_LANGID_LSB_Type LANGID_LSB; /**< \brief Offset: 0x11*/
294 USB2422_LANGID_MSB_Type LANGID_MSB; /**< \brief Offset: 0x12*/
295 USB2422_MFRSL_Type MFRSL; /**< \brief Offset: 0x13*/
296 USB2422_PRDSL_Type PRDSL; /**< \brief Offset: 0x14*/
297 USB2422_SERSL_Type SERSL; /**< \brief Offset: 0x15*/
298 USB2422_MFRSTR_Type MFRSTR[31]; /**< \brief Offset: 0x16*/
299 USB2422_PRDSTR_Type PRDSTR[31]; /**< \brief Offset: 0x54*/
300 USB2422_SERSTR_Type SERSTR[31]; /**< \brief Offset: 0x92*/
301 USB2422_BCEN_Type BCEN; /**< \brief Offset: 0xD0*/
302 uint8_t Reserved1[0x25];
303 USB2422_BOOSTUP_Type BOOSTUP; /**< \brief Offset: 0xF6*/
304 uint8_t Reserved2[0x1];
305 USB2422_BOOSTDOWN_Type BOOSTDOWN; /**< \brief Offset: 0xF8*/
306 uint8_t Reserved3[0x1];
307 USB2422_PRTSP_Type PRTSP; /**< \brief Offset: 0xFA*/
308 USB2422_PRTR12_Type PRTR12; /**< \brief Offset: 0xFB*/
309 uint8_t Reserved4[0x3];
310 USB2422_STCD_Type STCD; /**< \brief Offset: 0xFF*/
311} Usb2422_t;
312
313// ***************************************************************
314
315static Usb2422_t config;
316
317// ***************************************************************
318
319/** \brief Handle the conversion to allow simple strings
320 */
321static void USB2422_strcpy(const char* str, USB2422_MFRSTR_Type* dest, uint8_t len) {
322 for (uint8_t i = 0; i < len; i++) {
323 dest[i] = str[i];
324 }
325}
326
327/** \brief Handle the conversion to allow simple strings
328 */
329static void USB2422_write_block(void) {
330 static unsigned char i2c0_buf[34];
331
332 unsigned char* dest = i2c0_buf;
333 unsigned char* src;
334 unsigned char* base = (unsigned char*)&config;
335
336 for (src = base; src < base + 256; src += 32) {
337 dest[0] = src - base;
338 dest[1] = 32;
339 memcpy(&dest[2], src, 32);
340 i2c_transmit(USB2422_ADDRESS, dest, 34, 50000);
341 wait_us(100);
342 }
343}
344
345// ***************************************************************
346
347void USB2422_init(void) {
348#ifdef USB2422_RESET_PIN
349 gpio_set_pin_output(USB2422_RESET_PIN);
350#endif
351#ifdef USB2422_ACTIVE_PIN
352 gpio_set_pin_input(USB2422_ACTIVE_PIN);
353#endif
354
355 i2c_init(); // IC2 clk must be high at USB2422 reset release time to signal SMB configuration
356}
357
358void USB2422_configure(void) {
359 static const char SERNAME[] = "Unavailable";
360
361 memset(&config, 0, sizeof(Usb2422_t));
362
363 // configure Usb2422 registers
364 config.VID.reg = USB2422_VENDOR_ID;
365 config.PID.reg = USB2422_PRODUCT_ID;
366 config.DID.reg = USB2422_DEVICE_VER; // BCD format, eg 01.01
367 config.CFG1.bit.SELF_BUS_PWR = 1; // self powered for now
368 config.CFG1.bit.HS_DISABLE = 1; // full or high speed
369 // config.CFG2.bit.COMPOUND = 0; // compound device
370 config.CFG3.bit.STRING_EN = 1; // strings enabled
371 // config.NRD.bit.PORT2_NR = 0; // MCU is non-removable
372 config.MAXPB.reg = 20; // 0mA
373 config.HCMCB.reg = 20; // 0mA
374 config.MFRSL.reg = sizeof(USB2422_MANUFACTURER);
375 config.PRDSL.reg = sizeof(USB2422_PRODUCT);
376 config.SERSL.reg = sizeof(SERNAME);
377 USB2422_strcpy(USB2422_MANUFACTURER, config.MFRSTR, sizeof(USB2422_MANUFACTURER));
378 USB2422_strcpy(USB2422_PRODUCT, config.PRDSTR, sizeof(USB2422_PRODUCT));
379 USB2422_strcpy(SERNAME, config.SERSTR, sizeof(SERNAME));
380 // config.BOOSTUP.bit.BOOST=3; //upstream port
381 // config.BOOSTDOWN.bit.BOOST1=0; // extra port
382 // config.BOOSTDOWN.bit.BOOST2=2; //MCU is close
383 config.STCD.bit.USB_ATTACH = 1;
384
385 USB2422_write_block();
386}
387
388void USB2422_reset(void) {
389#ifdef USB2422_RESET_PIN
390 gpio_write_pin_low(USB2422_RESET_PIN);
391 wait_us(2);
392 gpio_write_pin_high(USB2422_RESET_PIN);
393#endif
394}
395
396bool USB2422_active(void) {
397#ifdef USB2422_ACTIVE_PIN
398 return gpio_read_pin(USB2422_ACTIVE_PIN);
399#else
400 return 1;
401#endif
402}