void usb_phy_switch_to_uart(void)
{
usb_enable_clock(true);
if (usb_phy_check_in_uart_mode())
return;
cur_usb_mode = UART_MODE;
/* RG_USB20_BC11_SW_EN = 1'b0 */
USBPHY_CLR8(0x1a, 0x80);
/* Set ru_uart_mode to 2'b01 */
USBPHY_SET8(0x6B, 0x5C);
/* Set RG_UART_EN to 1 */
USBPHY_SET8(0x6E, 0x07);
/* Set RG_USB20_DM_100K_EN to 1 */
USBPHY_SET8(0x22, 0x02);
/* Set RG_SUSPENDM to 1 */
USBPHY_SET8(0x68, 0x08);
/* force suspendm = 1 */
USBPHY_SET8(0x6a, 0x04);
/* EN_PU_DM = 1*/
USBPHY_SET8(0x1d, 0x18);
usb_enable_clock(false);
/* GPIO Selection */
mdelay(100);
DRV_WriteReg32(GPIO_BASE + 0x504, 0x20); //set
}
void usb_phy_switch_to_uart(void)
{
if (usb_phy_check_in_uart_mode()) {
return;
}
usb_enable_clock(true);
udelay(50);
/* RG_USB20_BC11_SW_EN = 1'b0 */
USBPHY_CLR8(0x1a, 0x80);
/* Set RG_SUSPENDM to 1 */
USBPHY_SET8(0x68, 0x08);
/* force suspendm = 1 */
USBPHY_SET8(0x6a, 0x04);
/* Set ru_uart_mode to 2'b01 */
USBPHY_SET8(0x6B, 0x5C);
/* Set RG_UART_EN to 1 */
USBPHY_SET8(0x6E, 0x07);
/* Set RG_USB20_DM_100K_EN to 1 */
USBPHY_SET8(0x22, 0x02);
usb_enable_clock(false);
/* GPIO Selection */
DRV_WriteReg32(UART1_BASE + 0x90, 0x1); //set
}
void usb_phy_switch_to_uart(void)
{
if (usb_phy_check_in_uart_mode()) {
return;
}
//ALPS00775710
printk("%s, line %d: force to uart mode!!\n", __func__, __LINE__);
//ALPS00775710
usb_enable_clock(true);
udelay(50);
/* RG_USB20_BC11_SW_EN = 1'b0 */
USBPHY_CLR8(0x1a, 0x80);
/* Set RG_SUSPENDM to 1 */
USBPHY_SET8(0x68, 0x08);
/* force suspendm = 1 */
USBPHY_SET8(0x6a, 0x04);
/* Set ru_uart_mode to 2'b01 */
USBPHY_SET8(0x6B, 0x5C);
/* Set RG_UART_EN to 1 */
USBPHY_SET8(0x6E, 0x07);
/* Set RG_USB20_DM_100K_EN to 1 */
USBPHY_SET8(0x22, 0x02);
usb_enable_clock(false);
}
void usb_phy_switch_to_uart(void)
{
if (usb_phy_check_in_uart_mode())
return;
DBG(0, "Mask PMIC charger detection in UART mode.\n");
pmic_chrdet_int_en(0);
usb_enable_clock(true);
udelay(50);
/* RG_USB20_BC11_SW_EN = 1'b0 */
USBPHY_CLR8(0x1a, 0x80);
/* Set RG_SUSPENDM to 1 */
USBPHY_SET8(0x68, 0x08);
/* force suspendm = 1 */
USBPHY_SET8(0x6a, 0x04);
/* Set ru_uart_mode to 2'b01 */
USBPHY_SET8(0x6B, 0x5C);
/* Set RG_UART_EN to 1 */
USBPHY_SET8(0x6E, 0x07);
/* Set RG_USB20_DM_100K_EN to 1 */
USBPHY_SET8(0x22, 0x02);
usb_enable_clock(false);
/* GPIO Selection */
DRV_WriteReg32(ap_uart0_base + 0xB0, 0x1);
}
void usb_phy_switch_to_uart(void)
{
if (usb_phy_check_in_uart_mode()) {
return;
}
usb_enable_clock(true);
udelay(50);
/* RG_USB20_BC11_SW_EN = 1'b0 */
USBPHY_CLR8(0x1a, 0x80);
/* Set RG_SUSPENDM to 1 */
USBPHY_SET8(0x68, 0x08);
/* force suspendm = 1 */
USBPHY_SET8(0x6a, 0x04);
/* Set ru_uart_mode to 2'b01 */
USBPHY_SET8(0x6B, 0x5C);
/* Set RG_UART_EN to 1 */
USBPHY_SET8(0x6E, 0x07);
/* Set RG_USB20_DM_100K_EN to 1 */
USBPHY_SET8(0x22, 0x02);
usb_enable_clock(false);
/*set uart rx path*/
mtk_uart_usb_rx_sel(1, 1);
usb_port_mode_temp = 1;
printk("usb port value in uart function:%d\n", usb_port_mode_temp);
/* GPIO Selection */
//DRV_WriteReg32(GPIO_BASE + 0x504, 0x10); //set
}
void usb_phy_savecurrent(){
if (usb_phy_check_in_uart_mode())
return;
/*
* swtich to USB function.
* (system register, force ip into usb mode).
*/
USBPHY_CLR8(0x6b, 0x04);
USBPHY_CLR8(0x6e, 0x01);
/* release force suspendm */
USBPHY_CLR8(0x6a, 0x04);
/* RG_DPPULLDOWN./RG_DMPULLDOWN. */
USBPHY_SET8(0x68, 0xc0);
/* RG_XCVRSEL[1:0] = 2'b01 */
USBPHY_CLR8(0x68, 0x30);
USBPHY_SET8(0x68, 0x10);
/* RG_TERMSEL = 1'b1 */
USBPHY_SET8(0x68, 0x04);
/* RG_DATAIN[3:0] = 4'b0000 */
USBPHY_CLR8(0x69, 0x3c);
/*
* force_dp_pulldown, force_dm_pulldown,
* force_xcversel, force_termsel.
*/
USBPHY_SET8(0x6a, 0xba);
/* RG_USB20_BC11_SW_EN = 1'b0 */
USBPHY_CLR8(0x1a, 0x80);
/* RG_USB20_OTG_VBUSSCMP_EN = 1'b0 */
USBPHY_CLR8(0x1a, 0x10);
udelay(800);
/* rg_usb20_pll_stable = 1 */
USBPHY_SET8(0x63, 0x02);
udelay(1);
/* force suspendm = 1 */
USBPHY_SET8(0x6a, 0x04);
udelay(1);
// force enter device mode
USBPHY_CLR8(0x6c, 0x10);
USBPHY_SET8(0x6c, 0x2E);
USBPHY_SET8(0x6d, 0x3E);
//4 14. turn off internal 48Mhz PLL.
usb_enable_clock(false);
printk("usb save current success\n");
return;
}
/* Denali_USB_PWR Sequence 20141030.xls */
void usb_phy_poweron(void)
{
#ifdef CONFIG_MTK_UART_USB_SWITCH
if (usb_phy_check_in_uart_mode())
return;
#endif
/* enable USB MAC clock. */
usb_enable_clock(true);
/* wait 50 usec for PHY3.3v/1.8v stable. */
udelay(50);
/* force_uart_en, 1'b0 */
USBPHY_CLR8(0x6b, 0x04);
/* RG_UART_EN, 1'b0 */
USBPHY_CLR8(0x6e, 0x01);
/* rg_usb20_gpio_ctl, 1'b0, usb20_gpio_mode, 1'b0 */
USBPHY_CLR8(0x21, 0x03);
/* RG_USB20_BC11_SW_EN, 1'b0 */
USBPHY_CLR8(0x1a, 0x80);
/* rg_usb20_dp_100k_mode, 1'b1 */
USBPHY_SET8(0x22, 0x04);
/* USB20_DP_100K_EN 1'b0, RG_USB20_DM_100K_EN, 1'b0 */
USBPHY_CLR8(0x22, 0x03);
/* RG_USB20_OTG_VBUSCMP_EN, 1'b1 */
USBPHY_SET8(0x1a, 0x10);
/* force_suspendm, 1'b0 */
USBPHY_CLR8(0x6a, 0x04);
/* 7 s7: wait for 800 usec. */
udelay(800);
/* force enter device mode, from K2, FIXME */
USBPHY_CLR8(0x6c, 0x10);
USBPHY_SET8(0x6c, 0x2F);
USBPHY_SET8(0x6d, 0x3F);
DBG(0, "usb power on success\n");
}
void usb_phy_poweron(void){
#ifdef MTK_UART_USB_SWITCH
if (usb_phy_check_in_uart_mode())
return;
#endif
//4 s1: enable USB MAC clock.
usb_enable_clock(true);
//4 s2: wait 50 usec for PHY3.3v/1.8v stable.
udelay(50);
//4 s3: swtich to USB function. (system register, force ip into usb mode.
USBPHY_CLR8(0x6b, 0x04);
USBPHY_CLR8(0x6e, 0x01);
USBPHY_CLR8(0x21, 0x03);
//USBPHY_CLR8(0x21, 0x01);
//4 s4: RG_USB20_BC11_SW_EN 1'b0
USBPHY_CLR8(0x1a, 0x80);
//5 s5: RG_USB20_DP_100K_EN 1'b0, RG_USB20_DM_100K_EN 1'b0
USBPHY_SET8(0x22, 0x04);
USBPHY_CLR8(0x22, 0x03);
/*OTG enable*/
USBPHY_SET8(0x20, 0x10);
//6 s6: release force suspendm.
USBPHY_CLR8(0x6a, 0x04);
//6-1. PASS RX sensitivity HQA requirement
USBPHY_SET8(0x18, 0x06);
//7 s7: wait for 800 usec.
udelay(800);
// force enter device mode, k2 need to modify?
USBPHY_CLR8(0x6c, 0x10);
USBPHY_SET8(0x6c, 0x2E);
USBPHY_SET8(0x6d, 0x3E);
printk("usb power on success\n");
}
void usb_phy_switch_to_usb(void)
{
usb_enable_clock(true);
if (!usb_phy_check_in_uart_mode())
return;
cur_usb_mode = USB_MODE;
/* GPIO Selection */
DRV_WriteReg32(GPIO_BASE + 0x508, 0x20); //clear
mdelay(200);
/*cler force_uart_xxx*/
USBPHY_WRITE8(0x6B, 0x00);
/* EN_PU_DM = 0*/
USBPHY_CLR8(0x1d, 0x18);
usb_enable_clock(false);
udelay(1000);
usb_phy_poweron();
}
void usb_phy_poweron(void){
#ifdef MTK_UART_USB_SWITCH
if (usb_phy_check_in_uart_mode())
return;
#endif
//4 s1: enable USB MAC clock.
usb_enable_clock(true);
//4 s2: wait 50 usec for PHY3.3v/1.8v stable.
udelay(50);
//4 s3: swtich to USB function. (system register, force ip into usb mode.
USBPHY_CLR8(0x6b, 0x04);
USBPHY_CLR8(0x6e, 0x01);
//4 s4: RG_USB20_BC11_SW_EN 1'b0
USBPHY_CLR8(0x1a, 0x80);
//RG_USB20_INTR_CAL[4:0] 5'b01101 Internal R selection
USBPHY_WRITE8(0x06,((USBPHY_READ8(0x06)&0x7)|0x68));
//5 s5: RG_USB20_DP_100K_EN 1'b0, RG_USB20_DM_100K_EN 1'b0
USBPHY_CLR8(0x22, 0x03);
//6 s6: release force suspendm.
USBPHY_CLR8(0x6a, 0x04);
//7 s7: wait for 800 usec.
udelay(800);
// force enter device mode
USBPHY_CLR8(0x6c, 0x10);
USBPHY_SET8(0x6c, 0x2E);
USBPHY_SET8(0x6d, 0x3E);
printk("usb power on success\n");
}
void usb_phy_poweron()
{
//turn on USB reference clock.
usb_enable_clock(true);
if (usb_phy_check_in_uart_mode())
return;
//wait 50 usec.
udelay(50);
/*
* swtich to USB function.
* (system register, force ip into usb mode).
*/
USBPHY_CLR8(0x6b, 0x04);
USBPHY_CLR8(0x6e, 0x01);
/* RG_USB20_BC11_SW_EN = 1'b0 */
USBPHY_CLR8(0x1a, 0x80);
/*DP, DM 100K disable*/
USBPHY_CLR8(0x22, 0x03);
/* release force suspendm */
USBPHY_CLR8(0x6a, 0x04);
udelay(800);
// force enter device mode
USBPHY_CLR8(0x6c, 0x10);
USBPHY_SET8(0x6c, 0x2E);
USBPHY_SET8(0x6d, 0x3E);
printk("usb power on success\n");
return;
}
void usb_phy_recover(){
//turn on USB reference clock.
usb_enable_clock(true);
if (usb_phy_check_in_uart_mode())
return;
//wait 50 usec.
udelay(50);
/* force_uart_en = 1'b0 */
USBPHY_CLR8(0x6b, 0x04);
/* RG_UART_EN = 1'b0 */
USBPHY_CLR8(0x6e, 0x01);
/* force_uart_en = 1'b0 */
USBPHY_CLR8(0x6a, 0x04);
/* RG_DPPULLDOWN./RG_DMPULLDOWN. */
/* RG_XCVRSEL[1:0] = 2'b00 */
/* RG_TERMSEL = 1'b0 */
USBPHY_CLR8(0x68, 0xf4);
/* RG_DATAIN[3:0] = 4'b0000 */
USBPHY_CLR8(0x69, 0x3c);
/*
* force_dp_pulldown, force_dm_pulldown,
* force_xcversel, force_termsel.
*/
USBPHY_CLR8(0x6a, 0xba);
/* RG_USB20_BC11_SW_EN = 1'b0 */
USBPHY_CLR8(0x1a, 0x80);
/* RG_USB20_OTG_VBUSSCMP_EN = 1'b1 */
USBPHY_SET8(0x1a, 0x10);
udelay(800);
// force enter device mode
USBPHY_CLR8(0x6c, 0x10);
USBPHY_SET8(0x6c, 0x2E);
USBPHY_SET8(0x6d, 0x3E);
hs_slew_rate_cal();
//RG_USB20_VRT_VREF_SEL[2:0]=5 (ori:4) (0x11110804[14:12])
USBPHY_SET8(0x05, 0x10);
//RG_USB20_TERM_VREF_SEL[2:0]=5 (ori:4) (0x11110804[10:8])
USBPHY_SET8(0x05, 0x01);
printk("USB HW reg: index18=0x%x, index7=0x%x\n", get_devinfo_with_index(18), get_devinfo_with_index(7));
if (get_devinfo_with_index(18) & (0x01<<14))
{
USBPHY_CLR8(0x00, 0x20);
printk("USB HW reg: write RG_USB20_INTR_EN 0x%x\n", USBPHY_READ8(0x00));
}
if (get_devinfo_with_index(7) & (0x07<<8))
{
//RG_USB20_VRT_VREF_SEL[2:0]=5 (ori:4) (0x11110804[14:12])
USBPHY_CLR8(0x05, 0x70);
USBPHY_SET8(0x05, ((get_devinfo_with_index(7)>>8)<<4)&0x70);
printk("USB HW reg: overwrite RG_USB20_VRT_VREF_SEL 0x%x\n", USBPHY_READ8(0x05));
}
void usb_phy_recover(void){
//4 1. turn on USB reference clock.
usb_enable_clock(true);
//4 2. wait 50 usec.
udelay(50);
#ifdef MTK_UART_USB_SWITCH
if (!usb_phy_check_in_uart_mode()) {
// clean PUPD_BIST_EN
// PUPD_BIST_EN = 1'b0
// PMIC will use it to detect charger type
USBPHY_CLR8(0x1d, 0x10);
//4 3. force_uart_en = 1'b0
USBPHY_CLR8(0x6b, 0x04);
//4 4. RG_UART_EN = 1'b0
USBPHY_CLR8(0x6e, 0x1);
//4 5. release force suspendm.
USBPHY_CLR8(0x6a, 0x04);
USBPHY_CLR8(0x22, 0x02);
skipDisableUartMode = false;
} else {
//if (!skipDisableUartMode)
return;
}
#else
// clean PUPD_BIST_EN
// PUPD_BIST_EN = 1'b0
// PMIC will use it to detect charger type
USBPHY_CLR8(0x1d, 0x10);
//4 3. force_uart_en = 1'b0
USBPHY_CLR8(0x6b, 0x04);
//4 4. RG_UART_EN = 1'b0
USBPHY_CLR8(0x6e, 0x1);
//4 5. force_uart_en = 1'b0
USBPHY_CLR8(0x6a, 0x04);
USBPHY_CLR8(0x21, 0x03);
#endif
//4 6. RG_DPPULLDOWN = 1'b0
USBPHY_CLR8(0x68, 0x40);
//4 7. RG_DMPULLDOWN = 1'b0
USBPHY_CLR8(0x68, 0x80);
//4 8. RG_XCVRSEL = 2'b00
USBPHY_CLR8(0x68, 0x30);
//4 9. RG_TERMSEL = 1'b0
USBPHY_CLR8(0x68, 0x04);
//4 10. RG_DATAIN[3:0] = 4'b0000
USBPHY_CLR8(0x69, 0x3c);
//4 11. force_dp_pulldown = 1b'0
USBPHY_CLR8(0x6a, 0x10);
//4 12. force_dm_pulldown = 1b'0
USBPHY_CLR8(0x6a, 0x20);
//4 13. force_xcversel = 1b'0
USBPHY_CLR8(0x6a, 0x08);
//4 14. force_termsel = 1b'0
USBPHY_CLR8(0x6a, 0x02);
//4 15. force_datain = 1b'0
USBPHY_CLR8(0x6a, 0x80);
//4 16. RG_USB20_BC11_SW_EN 1'b0
USBPHY_CLR8(0x1a, 0x80);
//4 17. RG_USB20_OTG_VBUSSCMP_EN 1'b1
USBPHY_SET8(0x1a, 0x10);
//18. PASS RX sensitivity HQA requirement
USBPHY_CLR8(0x18, 0x08);
USBPHY_SET8(0x18, 0x06);
//4 18. wait 800 usec.
udelay(800);
// force enter device mode, k2 need?
USBPHY_CLR8(0x6c, 0x10);
USBPHY_SET8(0x6c, 0x2E);
USBPHY_SET8(0x6d, 0x3E);
#if defined(MTK_HDMI_SUPPORT)
USBPHY_SET8(0x05, 0x05);
USBPHY_SET8(0x05, 0x50);
#endif
hs_slew_rate_cal();
printk("usb recovery success\n");
return;
}
void usb_phy_context_save(void)
{
#ifdef CONFIG_MTK_UART_USB_SWITCH
in_uart_mode = usb_phy_check_in_uart_mode();
#endif
}
/* Denali_USB_PWR Sequence 20141030.xls */
void usb_phy_recover(void)
{
/* to avoid hw access during clock-on */
unsigned long flags;
int do_lock;
do_lock = 0;
if (mtk_musb) {
spin_lock_irqsave(&mtk_musb->lock, flags);
do_lock = 1;
} else {
DBG(0, "mtk_musb is NULL\n");
return;
}
/* turn on USB reference clock. */
usb_enable_clock(true);
if (do_lock)
spin_unlock_irqrestore(&mtk_musb->lock, flags);
/* wait 50 usec. */
udelay(50);
#ifdef CONFIG_MTK_UART_USB_SWITCH
if (!usb_phy_check_in_uart_mode()) {
/* clean PUPD_BIST_EN */
/* PUPD_BIST_EN = 1'b0 */
/* PMIC will use it to detect charger type */
USBPHY_CLR8(0x1d, 0x10);
/* force_uart_en, 1'b0 */
USBPHY_CLR8(0x6b, 0x04);
/* RG_UART_EN, 1'b0 */
USBPHY_CLR8(0x6e, 0x01);
/* rg_usb20_gpio_ctl, 1'b0, usb20_gpio_mode, 1'b0 */
USBPHY_CLR8(0x21, 0x03);
/* force_suspendm, 1'b0 */
USBPHY_CLR8(0x6a, 0x04);
skipDisableUartMode = false;
} else {
if (!skipDisableUartMode)
return;
}
#else
/* clean PUPD_BIST_EN */
/* PUPD_BIST_EN = 1'b0 */
/* PMIC will use it to detect charger type */
USBPHY_CLR8(0x1d, 0x10);
/* force_uart_en, 1'b0 */
USBPHY_CLR8(0x6b, 0x04);
/* RG_UART_EN, 1'b0 */
USBPHY_CLR8(0x6e, 0x01);
/* rg_usb20_gpio_ctl, 1'b0, usb20_gpio_mode, 1'b0 */
USBPHY_CLR8(0x21, 0x03);
/* force_suspendm, 1'b0 */
USBPHY_CLR8(0x6a, 0x04);
#endif
/* RG_DPPULLDOWN, 1'b0, RG_DMPULLDOWN, 1'b0 */
USBPHY_CLR8(0x68, 0xc0);
/* RG_XCVRSEL[1:0], 2'b00. */
USBPHY_CLR8(0x68, 0x30);
/* RG_TERMSEL, 1'b0 */
USBPHY_CLR8(0x68, 0x04);
/* RG_DATAIN[3:0], 4'b0000 */
USBPHY_CLR8(0x69, 0x3c);
/* force_dp_pulldown, 1'b0, force_dm_pulldown, 1'b0,
force_xcversel, 1'b0, force_termsel, 1'b0, force_datain, 1'b0 */
USBPHY_CLR8(0x6a, 0xba);
/* RG_USB20_BC11_SW_EN, 1'b0 */
USBPHY_CLR8(0x1a, 0x80);
/* RG_USB20_OTG_VBUSCMP_EN, 1'b1 */
USBPHY_SET8(0x1a, 0x10);
/* wait 800 usec. */
udelay(800);
/* force enter device mode, from K2, FIXME */
USBPHY_CLR8(0x6c, 0x10);
USBPHY_SET8(0x6c, 0x2F);
USBPHY_SET8(0x6d, 0x3F);
/* from K2, FIXME */
#if defined(MTK_HDMI_SUPPORT)
USBPHY_SET8(0x05, 0x05);
USBPHY_SET8(0x05, 0x50);
#endif
/* adjustment after HQA */
HQA_special();
hs_slew_rate_cal();
DBG(0, "usb recovery success\n");
}
/* Denali_USB_PWR Sequence 20141030.xls */
static void usb_phy_savecurrent_internal(void)
{
/* 4 1. swtich to USB function. (system register, force ip into usb mode. */
#ifdef CONFIG_MTK_UART_USB_SWITCH
if (!usb_phy_check_in_uart_mode()) {
/* enable USB MAC clock. */
usb_enable_clock(true);
/* wait 50 usec for PHY3.3v/1.8v stable. */
udelay(50);
/* force_uart_en, 1'b0 */
USBPHY_CLR8(0x6b, 0x04);
/* RG_UART_EN, 1'b0 */
USBPHY_CLR8(0x6e, 0x01);
/* rg_usb20_gpio_ctl, 1'b0, usb20_gpio_mode, 1'b0 */
USBPHY_CLR8(0x21, 0x03);
/* RG_USB20_BC11_SW_EN, 1'b0 */
USBPHY_CLR8(0x1a, 0x80);
/* RG_USB20_OTG_VBUSCMP_EN, 1'b0 */
USBPHY_CLR8(0x1a, 0x10);
/* RG_SUSPENDM, 1'b1 */
USBPHY_SET8(0x68, 0x08);
/* force_suspendm, 1'b1 */
USBPHY_SET8(0x6a, 0x04);
usb_enable_clock(false);
} else {
if (skipDisableUartMode)
skipDisableUartMode = false;
else
return;
}
#else
/* force_uart_en, 1'b0 */
USBPHY_CLR8(0x6b, 0x04);
/* RG_UART_EN, 1'b0 */
USBPHY_CLR8(0x6e, 0x01);
/* rg_usb20_gpio_ctl, 1'b0, usb20_gpio_mode, 1'b0 */
USBPHY_CLR8(0x21, 0x03);
/* RG_USB20_BC11_SW_EN, 1'b0 */
USBPHY_CLR8(0x1a, 0x80);
/* RG_USB20_OTG_VBUSCMP_EN, 1'b0 */
USBPHY_CLR8(0x1a, 0x10);
/* RG_SUSPENDM, 1'b1 */
USBPHY_SET8(0x68, 0x08);
/* force_suspendm, 1'b1 */
USBPHY_SET8(0x6a, 0x04);
#endif
/* RG_DPPULLDOWN, 1'b1, RG_DMPULLDOWN, 1'b1 */
USBPHY_SET8(0x68, 0xc0);
/* RG_XCVRSEL[1:0], 2'b01. */
USBPHY_CLR8(0x68, 0x20);
USBPHY_SET8(0x68, 0x10);
/* RG_TERMSEL, 1'b1 */
USBPHY_SET8(0x68, 0x04);
/* RG_DATAIN[3:0], 4'b0000 */
USBPHY_CLR8(0x69, 0x3c);
/* force_dp_pulldown, 1'b1, force_dm_pulldown, 1'b1,
force_xcversel, 1'b1, force_termsel, 1'b1, force_datain, 1'b1 */
USBPHY_SET8(0x6a, 0xba);
udelay(800);
/* RG_SUSPENDM, 1'b0 */
USBPHY_CLR8(0x68, 0x08);
/* ALPS00427972, implement the analog register formula */
/*
DBG(0, "%s: USBPHY_READ8(0x05) = 0x%x\n", __func__, USBPHY_READ8(0x05));
DBG(0, "%s: USBPHY_READ8(0x07) = 0x%x\n", __func__, USBPHY_READ8(0x07));
*/
/* ALPS00427972, implement the analog register formula */
udelay(1);
/* force enter device mode, from K2, FIXME */
/* force enter device mode */
/* USBPHY_CLR8(0x6c, 0x10); */
/* USBPHY_SET8(0x6c, 0x2E); */
/* USBPHY_SET8(0x6d, 0x3E); */
#ifdef CONFIG_MTK_UART_USB_SWITCH
if (in_uart_mode) {
USBPHY_SET8(0x68, 0x08);
DBG(0, "%s:%d - SWITCH to UART MODE after savecurrent!\n", __func__, __LINE__);
}
#endif
}
static void usb_phy_savecurrent_internal(void){
//4 1. swtich to USB function. (system register, force ip into usb mode.
#ifdef MTK_UART_USB_SWITCH
if (!usb_phy_check_in_uart_mode()) {
//4 s1: enable USB MAC clock.
usb_enable_clock(true);
//4 s2: wait 50 usec for PHY3.3v/1.8v stable.
udelay(50);
USBPHY_CLR8(0x6b, 0x04);
USBPHY_CLR8(0x6e, 0x01);
//4 2. release force suspendm.
USBPHY_CLR8(0x6a, 0x04);
usb_enable_clock(false);
} else {
if (skipDisableUartMode)
skipDisableUartMode = false;
else
return;
}
#else
USBPHY_CLR8(0x6b, 0x04);
USBPHY_CLR8(0x6e, 0x01);
//4 2. release force suspendm.
USBPHY_CLR8(0x6a, 0x04);
#endif
//4 3. RG_DPPULLDOWN./RG_DMPULLDOWN.
USBPHY_SET8(0x68, 0xc0);
//4 4. RG_XCVRSEL[1:0] =2'b01.
USBPHY_CLR8(0x68, 0x30);
USBPHY_SET8(0x68, 0x10);
//4 5. RG_TERMSEL = 1'b1
USBPHY_SET8(0x68, 0x04);
//4 6. RG_DATAIN[3:0]=4'b0000
USBPHY_CLR8(0x69, 0x3c);
//4 7.force_dp_pulldown, force_dm_pulldown, force_xcversel,force_termsel.
USBPHY_SET8(0x6a, 0xba);
//4 8.RG_USB20_BC11_SW_EN 1'b0
USBPHY_CLR8(0x1a, 0x80);
//RG_USB20_INTR_CAL[4:0] 5'b01101 Internal R selection
USBPHY_WRITE8(0x06,((USBPHY_READ8(0x06)&0x7)|0x68));
//4 9.RG_USB20_OTG_VBUSSCMP_EN 1'b0
USBPHY_CLR8(0x1a, 0x10);
//4 10. delay 800us.
udelay(800);
//4 11. rg_usb20_pll_stable = 1
USBPHY_SET8(0x63, 0x02);
//ALPS00427972, implement the analog register formula
printk("%s: USBPHY_READ8(0x05) = 0x%x \n", __func__, USBPHY_READ8(0x05));
printk("%s: USBPHY_READ8(0x07) = 0x%x \n", __func__, USBPHY_READ8(0x07));
//ALPS00427972, implement the analog register formula
udelay(1);
//4 12. force suspendm = 1.
USBPHY_SET8(0x6a, 0x04);
//4 13. wait 1us
udelay(1);
// force enter device mode
USBPHY_CLR8(0x6c, 0x10);
USBPHY_SET8(0x6c, 0x2E);
USBPHY_SET8(0x6d, 0x3E);
}
void usb_phy_recover(void){
//4 1. turn on USB reference clock.
usb_enable_clock(true);
//4 2. wait 50 usec.
udelay(50);
#ifdef MTK_UART_USB_SWITCH
if (!usb_phy_check_in_uart_mode()) {
// clean PUPD_BIST_EN
// PUPD_BIST_EN = 1'b0
// PMIC will use it to detect charger type
USBPHY_CLR8(0x1d, 0x10);
//4 3. force_uart_en = 1'b0
USBPHY_CLR8(0x6b, 0x04);
//4 4. RG_UART_EN = 1'b0
USBPHY_CLR8(0x6e, 0x1);
//4 5. release force suspendm.
USBPHY_CLR8(0x6a, 0x04);
skipDisableUartMode = false;
} else {
if (!skipDisableUartMode)
return;
}
#else
// clean PUPD_BIST_EN
// PUPD_BIST_EN = 1'b0
// PMIC will use it to detect charger type
USBPHY_CLR8(0x1d, 0x10);
//4 3. force_uart_en = 1'b0
USBPHY_CLR8(0x6b, 0x04);
//4 4. RG_UART_EN = 1'b0
USBPHY_CLR8(0x6e, 0x1);
//4 5. force_uart_en = 1'b0
USBPHY_CLR8(0x6a, 0x04);
#endif
//4 6. RG_DPPULLDOWN = 1'b0
USBPHY_CLR8(0x68, 0x40);
//4 7. RG_DMPULLDOWN = 1'b0
USBPHY_CLR8(0x68, 0x80);
//4 8. RG_XCVRSEL = 2'b00
USBPHY_CLR8(0x68, 0x30);
//4 9. RG_TERMSEL = 1'b0
USBPHY_CLR8(0x68, 0x04);
//4 10. RG_DATAIN[3:0] = 4'b0000
USBPHY_CLR8(0x69, 0x3c);
//4 11. force_dp_pulldown = 1b'0
USBPHY_CLR8(0x6a, 0x10);
//4 12. force_dm_pulldown = 1b'0
USBPHY_CLR8(0x6a, 0x20);
//4 13. force_xcversel = 1b'0
USBPHY_CLR8(0x6a, 0x08);
//4 14. force_termsel = 1b'0
USBPHY_CLR8(0x6a, 0x02);
//4 15. force_datain = 1b'0
USBPHY_CLR8(0x6a, 0x80);
//4 16. RG_USB20_BC11_SW_EN 1'b0
USBPHY_CLR8(0x1a, 0x80);
//RG_USB20_INTR_CAL[4:0] 5'b01101 Internal R selection
if (get_devinfo_with_index(19) & (0xF80))
{
//printk("USB HW reg: read RG_USB20_INTR_CAL 0x%x\n", USBPHY_READ8(0x06));
USBPHY_WRITE8(0x06,((USBPHY_READ8(0x06)&0x7)|((get_devinfo_with_index(19)&0xF80)>>4)));
printk("USB HW reg: write RG_USB20_INTR_CAL 0x%x\n", USBPHY_READ8(0x06));
}
