diff options
Diffstat (limited to 'tmk_core/protocol/arm_atsam/usb/usb2422.c')
| -rw-r--r-- | tmk_core/protocol/arm_atsam/usb/usb2422.c | 409 |
1 files changed, 409 insertions, 0 deletions
diff --git a/tmk_core/protocol/arm_atsam/usb/usb2422.c b/tmk_core/protocol/arm_atsam/usb/usb2422.c new file mode 100644 index 0000000000..ac19bf4ea0 --- /dev/null +++ b/tmk_core/protocol/arm_atsam/usb/usb2422.c @@ -0,0 +1,409 @@ +/* +Copyright 2018 Massdrop Inc. + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation, either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include "arm_atsam_protocol.h" +#include <string.h> + +Usb2422 USB2422_shadow; +unsigned char i2c0_buf[34]; + +const uint16_t MFRNAME[] = { 'M','a','s','s','d','r','o','p',' ','I','n','c','.' }; //Massdrop Inc. +const uint16_t PRDNAME[] = { 'M','a','s','s','d','r','o','p',' ','H','u','b' }; //Massdrop Hub +#ifndef MD_BOOTLOADER +//Serial number reported stops before first found space character or at last found character +const uint16_t SERNAME[] = { 'U','n','a','v','a','i','l','a','b','l','e' }; //Unavailable +#else +//In production, this field is found, modified, and offset noted as the last 32-bit word in the bootloader space +//The offset allows the application to use the factory programmed serial (which may differ from the physical serial label) +//Serial number reported stops before first found space character or when max size is reached +__attribute__((__aligned__(4))) +const uint16_t SERNAME[BOOTLOADER_SERIAL_MAX_SIZE] = { 'M','D','H','U','B','B','O','O','T','L','0','0','0','0','0','0','0','0','0','0' }; +//NOTE: Serial replacer will not write a string longer than given here as a precaution, so give enough +// space as needed and adjust BOOTLOADER_SERIAL_MAX_SIZE to match amount given +#endif //MD_BOOTLOADER + +uint8_t usb_host_port; + +#ifndef MD_BOOTLOADER + +uint8_t usb_extra_state; +uint8_t usb_extra_manual; +uint8_t usb_gcr_auto; + +#endif //MD_BOOTLOADER + +uint16_t adc_extra; + +void USB_write2422_block(void) +{ + unsigned char *dest = i2c0_buf; + unsigned char *src; + unsigned char *base = (unsigned char *)&USB2422_shadow; + + DBGC(DC_USB_WRITE2422_BLOCK_BEGIN); + + for (src = base; src < base + 256; src += 32) + { + dest[0] = src - base; + dest[1] = 32; + memcpy(&dest[2], src, 32); + i2c0_transmit(USB2422_ADDR, dest, 34, 50000); + SERCOM0->I2CM.CTRLB.bit.CMD = 0x03; + while (SERCOM0->I2CM.SYNCBUSY.bit.SYSOP) { DBGC(DC_USB_WRITE2422_BLOCK_SYNC_SYSOP); } + CLK_delay_us(100); + } + + DBGC(DC_USB_WRITE2422_BLOCK_COMPLETE); +} + +void USB2422_init(void) +{ + Gclk *pgclk = GCLK; + Mclk *pmclk = MCLK; + Port *pport = PORT; + Oscctrl *posc = OSCCTRL; + Usb *pusb = USB; + + DBGC(DC_USB2422_INIT_BEGIN); + + while ((v_5v = adc_get(ADC_5V)) < ADC_5V_START_LEVEL) { DBGC(DC_USB2422_INIT_WAIT_5V_LOW); } + + //setup peripheral and synchronous bus clocks to USB + pgclk->PCHCTRL[10].bit.GEN = 0; + pgclk->PCHCTRL[10].bit.CHEN = 1; + pmclk->AHBMASK.bit.USB_ = 1; + pmclk->APBBMASK.bit.USB_ = 1; + + //setup port pins for D-, D+, and SOF_1KHZ + pport->Group[0].PMUX[12].reg = 0x77; //PA24, PA25, function column H for USB D-, D+ + pport->Group[0].PINCFG[24].bit.PMUXEN = 1; + pport->Group[0].PINCFG[25].bit.PMUXEN = 1; + pport->Group[1].PMUX[11].bit.PMUXE = 7; //PB22, function column H for USB SOF_1KHz output + pport->Group[1].PINCFG[22].bit.PMUXEN = 1; + + //configure and enable DFLL for USB clock recovery mode at 48MHz + posc->DFLLCTRLA.bit.ENABLE = 0; + while (posc->DFLLSYNC.bit.ENABLE) { DBGC(DC_USB2422_INIT_OSC_SYNC_DISABLING); } + while (posc->DFLLSYNC.bit.DFLLCTRLB) { DBGC(DC_USB2422_INIT_OSC_SYNC_DFLLCTRLB_1); } + posc->DFLLCTRLB.bit.USBCRM = 1; + while (posc->DFLLSYNC.bit.DFLLCTRLB) { DBGC(DC_USB2422_INIT_OSC_SYNC_DFLLCTRLB_2); } + posc->DFLLCTRLB.bit.MODE = 1; + while (posc->DFLLSYNC.bit.DFLLCTRLB) { DBGC(DC_USB2422_INIT_OSC_SYNC_DFLLCTRLB_3); } + posc->DFLLCTRLB.bit.QLDIS = 0; + while (posc->DFLLSYNC.bit.DFLLCTRLB) { DBGC(DC_USB2422_INIT_OSC_SYNC_DFLLCTRLB_4); } + posc->DFLLCTRLB.bit.CCDIS = 1; + posc->DFLLMUL.bit.MUL = 0xBB80; //4800 x 1KHz + while (posc->DFLLSYNC.bit.DFLLMUL) { DBGC(DC_USB2422_INIT_OSC_SYNC_DFLLMUL); } + posc->DFLLCTRLA.bit.ENABLE = 1; + while (posc->DFLLSYNC.bit.ENABLE) { DBGC(DC_USB2422_INIT_OSC_SYNC_ENABLING); } + + pusb->DEVICE.CTRLA.bit.SWRST = 1; + while (pusb->DEVICE.SYNCBUSY.bit.SWRST) { DBGC(DC_USB2422_INIT_USB_SYNC_SWRST); } + while (pusb->DEVICE.CTRLA.bit.SWRST) { DBGC(DC_USB2422_INIT_USB_WAIT_SWRST); } + //calibration from factory presets + pusb->DEVICE.PADCAL.bit.TRANSN = (USB_FUSES_TRANSN_ADDR >> USB_FUSES_TRANSN_Pos) & USB_FUSES_TRANSN_Msk; + pusb->DEVICE.PADCAL.bit.TRANSP = (USB_FUSES_TRANSP_ADDR >> USB_FUSES_TRANSP_Pos) & USB_FUSES_TRANSP_Msk; + pusb->DEVICE.PADCAL.bit.TRIM = (USB_FUSES_TRIM_ADDR >> USB_FUSES_TRIM_Pos) & USB_FUSES_TRIM_Msk; + //device mode, enabled + pusb->DEVICE.CTRLB.bit.SPDCONF = 0; //full speed + pusb->DEVICE.CTRLA.bit.MODE = 0; + pusb->DEVICE.CTRLA.bit.ENABLE = 1; + while (pusb->DEVICE.SYNCBUSY.bit.ENABLE) { DBGC(DC_USB2422_INIT_USB_SYNC_ENABLING); } + + pusb->DEVICE.QOSCTRL.bit.DQOS = 2; + pusb->DEVICE.QOSCTRL.bit.CQOS = 2; + + pport->Group[USB2422_HUB_ACTIVE_GROUP].PINCFG[USB2422_HUB_ACTIVE_PIN].bit.INEN = 1; + + i2c0_init(); //IC2 clk must be high at USB2422 reset release time to signal SMB configuration + + sr_exp_data.bit.HUB_CONNECT = 1; //connect signal + sr_exp_data.bit.HUB_RESET_N = 1; //reset high + SR_EXP_WriteData(); + + CLK_delay_us(100); + +#ifndef MD_BOOTLOADER + + usb_extra_manual = 0; + usb_gcr_auto = 1; + +#endif //MD_BOOTLOADER + + DBGC(DC_USB2422_INIT_COMPLETE); +} + +void USB_reset(void) +{ + DBGC(DC_USB_RESET_BEGIN); + + //pulse reset for at least 1 usec + sr_exp_data.bit.HUB_RESET_N = 0; //reset low + SR_EXP_WriteData(); + CLK_delay_us(1); + sr_exp_data.bit.HUB_RESET_N = 1; //reset high to run + SR_EXP_WriteData(); + CLK_delay_us(1); + + DBGC(DC_USB_RESET_COMPLETE); +} + +void USB_configure(void) +{ + Usb2422 *pusb2422 = &USB2422_shadow; + memset(pusb2422, 0, sizeof(Usb2422)); + + uint16_t *serial_use = (uint16_t *)SERNAME; //Default to use SERNAME from this file + uint8_t serial_length = sizeof(SERNAME) / sizeof(uint16_t); //Default to use SERNAME from this file +#ifndef MD_BOOTLOADER + uint32_t serial_ptrloc = (uint32_t)&_srom - 4; +#else //MD_BOOTLOADER + uint32_t serial_ptrloc = (uint32_t)&_erom - 4; +#endif //MD_BOOTLOADER + uint32_t serial_address = *(uint32_t *)serial_ptrloc; //Address of bootloader's serial number if available + + DBGC(DC_USB_CONFIGURE_BEGIN); + + if (serial_address != 0xFFFFFFFF && serial_address < serial_ptrloc) //Check for factory programmed serial address + { + if ((serial_address & 0xFF) % 4 == 0) //Check alignment + { + serial_use = (uint16_t *)(serial_address); + serial_length = 0; + while ((*(serial_use + serial_length) > 32 && *(serial_use + serial_length) < 127) && + serial_length < BOOTLOADER_SERIAL_MAX_SIZE) + { + serial_length++; + DBGC(DC_USB_CONFIGURE_GET_SERIAL); + } + } + } + + //configure Usb2422 registers + pusb2422->VID.reg = 0x04D8; // from Microchip 4/19/2018 + pusb2422->PID.reg = 0xEEC5; // from Microchip 4/19/2018 = Massdrop, Inc. USB Hub + pusb2422->DID.reg = 0x0101; // BCD 01.01 + pusb2422->CFG1.bit.SELF_BUS_PWR = 1; // self powered for now + pusb2422->CFG1.bit.HS_DISABLE = 1; // full or high speed + //pusb2422->CFG2.bit.COMPOUND = 0; // compound device + pusb2422->CFG3.bit.STRING_EN = 1; // strings enabled + //pusb2422->NRD.bit.PORT2_NR = 0; // MCU is non-removable + pusb2422->MAXPB.reg = 20; // 0mA + pusb2422->HCMCB.reg = 20; // 0mA + pusb2422->MFRSL.reg = sizeof(MFRNAME) / sizeof(uint16_t); + pusb2422->PRDSL.reg = sizeof(PRDNAME) / sizeof(uint16_t); + pusb2422->SERSL.reg = serial_length; + memcpy(pusb2422->MFRSTR, MFRNAME, sizeof(MFRNAME)); + memcpy(pusb2422->PRDSTR, PRDNAME, sizeof(PRDNAME)); + memcpy(pusb2422->SERSTR, serial_use, serial_length * sizeof(uint16_t)); + //pusb2422->BOOSTUP.bit.BOOST=3; //upstream port + //pusb2422->BOOSTDOWN.bit.BOOST1=0; // extra port + //pusb2422->BOOSTDOWN.bit.BOOST2=2; //MCU is close + pusb2422->STCD.bit.USB_ATTACH = 1; + USB_write2422_block(); + + adc_extra = 0; + + DBGC(DC_USB_CONFIGURE_COMPLETE); +} + +uint16_t USB_active(void) +{ + return (PORT->Group[USB2422_HUB_ACTIVE_GROUP].IN.reg & (1 << USB2422_HUB_ACTIVE_PIN)) != 0; +} + +void USB_set_host_by_voltage(void) +{ + //UP is upstream device (HOST) + //DN1 is downstream device (EXTRA) + //DN2 is keyboard (KEYB) + + DBGC(DC_USB_SET_HOST_BY_VOLTAGE_BEGIN); + + usb_host_port = USB_HOST_PORT_UNKNOWN; +#ifndef MD_BOOTLOADER + usb_extra_state = USB_EXTRA_STATE_UNKNOWN; +#endif //MD_BOOTLOADER + sr_exp_data.bit.SRC_1 = 1; //USBC-1 available for test + sr_exp_data.bit.SRC_2 = 1; //USBC-2 available for test + sr_exp_data.bit.E_UP_N = 1; //HOST disable + sr_exp_data.bit.E_DN1_N = 1; //EXTRA disable + sr_exp_data.bit.E_VBUS_1 = 0; //USBC-1 disable full power I/O + sr_exp_data.bit.E_VBUS_2 = 0; //USBC-2 disable full power I/O + + SR_EXP_WriteData(); + + CLK_delay_ms(250); + + while ((v_5v = adc_get(ADC_5V)) < ADC_5V_START_LEVEL) { DBGC(DC_USB_SET_HOST_5V_LOW_WAITING); } + + v_con_1 = adc_get(ADC_CON1); + v_con_2 = adc_get(ADC_CON2); + + v_con_1_boot = v_con_1; + v_con_2_boot = v_con_2; + + if (v_con_1 > v_con_2) + { + sr_exp_data.bit.S_UP = 0; //HOST to USBC-1 + sr_exp_data.bit.S_DN1 = 1; //EXTRA to USBC-2 + sr_exp_data.bit.SRC_1 = 1; //HOST on USBC-1 + sr_exp_data.bit.SRC_2 = 0; //EXTRA available on USBC-2 + + sr_exp_data.bit.E_VBUS_1 = 1; //USBC-1 enable full power I/O + sr_exp_data.bit.E_VBUS_2 = 0; //USBC-2 disable full power I/O + + SR_EXP_WriteData(); + + sr_exp_data.bit.E_UP_N = 0; //HOST enable + + SR_EXP_WriteData(); + + usb_host_port = USB_HOST_PORT_1; + } + else + { + sr_exp_data.bit.S_UP = 1; //EXTRA to USBC-1 + sr_exp_data.bit.S_DN1 = 0; //HOST to USBC-2 + sr_exp_data.bit.SRC_1 = 0; //EXTRA available on USBC-1 + sr_exp_data.bit.SRC_2 = 1; //HOST on USBC-2 + + sr_exp_data.bit.E_VBUS_1 = 0; //USBC-1 disable full power I/O + sr_exp_data.bit.E_VBUS_2 = 1; //USBC-2 enable full power I/O + + SR_EXP_WriteData(); + + sr_exp_data.bit.E_UP_N = 0; //HOST enable + + SR_EXP_WriteData(); + + usb_host_port = USB_HOST_PORT_2; + } + +#ifndef MD_BOOTLOADER + usb_extra_state = USB_EXTRA_STATE_DISABLED; +#endif //MD_BOOTLOADER + + USB_reset(); + USB_configure(); + + DBGC(DC_USB_SET_HOST_BY_VOLTAGE_COMPLETE); +} + +uint8_t USB2422_Port_Detect_Init(void) +{ + uint32_t port_detect_retry_ms; + uint32_t tmod; + + DBGC(DC_PORT_DETECT_INIT_BEGIN); + + USB_set_host_by_voltage(); + + port_detect_retry_ms = CLK_get_ms() + PORT_DETECT_RETRY_INTERVAL; + + while (!USB_active()) + { + tmod = CLK_get_ms() % PORT_DETECT_RETRY_INTERVAL; + + if (v_con_1 > v_con_2) //Values updated from USB_set_host_by_voltage(); + { + //1 flash for port 1 detected + if (tmod > 500 && tmod < 600) { DBG_LED_ON; } + else { DBG_LED_OFF; } + } + else if (v_con_2 > v_con_1) //Values updated from USB_set_host_by_voltage(); + { + //2 flash for port 2 detected + if (tmod > 500 && tmod < 600) { DBG_LED_ON; } + else if (tmod > 700 && tmod < 800) { DBG_LED_ON; } + else { DBG_LED_OFF; } + } + + if (CLK_get_ms() > port_detect_retry_ms) + { + DBGC(DC_PORT_DETECT_INIT_FAILED); + return 0; + } + } + + DBGC(DC_PORT_DETECT_INIT_COMPLETE); + + return 1; +} + +#ifndef MD_BOOTLOADER + +void USB_ExtraSetState(uint8_t state) +{ + uint8_t state_save = state; + + if (state == USB_EXTRA_STATE_DISABLED_UNTIL_REPLUG) + state = USB_EXTRA_STATE_DISABLED; + + if (usb_host_port == USB_HOST_PORT_1) sr_exp_data.bit.E_VBUS_2 = state; + else if (usb_host_port == USB_HOST_PORT_2) sr_exp_data.bit.E_VBUS_1 = state; + else return; + + sr_exp_data.bit.E_DN1_N = !state; + SR_EXP_WriteData(); + + usb_extra_state = state_save; + + if (usb_extra_state == USB_EXTRA_STATE_ENABLED) CDC_print("USB: Extra enabled\r\n"); + else if (usb_extra_state == USB_EXTRA_STATE_DISABLED) + { + CDC_print("USB: Extra disabled\r\n"); + if (led_animation_breathing) gcr_breathe = gcr_desired; + } + else if (usb_extra_state == USB_EXTRA_STATE_DISABLED_UNTIL_REPLUG) CDC_print("USB: Extra disabled until replug\r\n"); + else CDC_print("USB: Extra state unknown\r\n"); +} + +void USB_HandleExtraDevice(void) +{ + uint16_t adcval; + + if (usb_host_port == USB_HOST_PORT_1) adcval = adc_get(ADC_CON2); + else if (usb_host_port == USB_HOST_PORT_2) adcval = adc_get(ADC_CON1); + else return; + + adc_extra = adc_extra * 0.9 + adcval * 0.1; + + //Check for a forced disable state (such as overload prevention) + if (usb_extra_state == USB_EXTRA_STATE_DISABLED_UNTIL_REPLUG) + { + //Detect unplug and reset state to disabled + if (adc_extra > USB_EXTRA_ADC_THRESHOLD) usb_extra_state = USB_EXTRA_STATE_DISABLED; + + return; //Return even if unplug detected + } + + if (usb_extra_manual) + { + if (usb_extra_state == USB_EXTRA_STATE_DISABLED) + USB_ExtraSetState(USB_EXTRA_STATE_ENABLED); + + return; + } + + //dpf("a %i %i\r\n",adcval, adc_extra); + if (usb_extra_state == USB_EXTRA_STATE_DISABLED && adc_extra < USB_EXTRA_ADC_THRESHOLD) USB_ExtraSetState(USB_EXTRA_STATE_ENABLED); + else if (usb_extra_state == USB_EXTRA_STATE_ENABLED && adc_extra > USB_EXTRA_ADC_THRESHOLD) USB_ExtraSetState(USB_EXTRA_STATE_DISABLED); +} + +#endif //MD_BOOTLOADER + |