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Diffstat (limited to 'plat/mediatek/drivers/uart/uart.h')
| -rw-r--r-- | plat/mediatek/drivers/uart/uart.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/plat/mediatek/drivers/uart/uart.h b/plat/mediatek/drivers/uart/uart.h new file mode 100644 index 0000000..2ca74fa --- /dev/null +++ b/plat/mediatek/drivers/uart/uart.h @@ -0,0 +1,100 @@ +/* + * Copyright (c) 2020-2022, MediaTek Inc. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef UART_H +#define UART_H + +#include <platform_def.h> + +/* UART HW information */ +#define HW_SUPPORT_UART_PORTS 2 +#define DRV_SUPPORT_UART_PORTS 2 + +/* console UART clock cg */ +#define UART_CLOCK_GATE_SET (INFRACFG_AO_BASE + 0x80) +#define UART_CLOCK_GATE_CLR (INFRACFG_AO_BASE + 0x84) +#define UART_CLOCK_GATE_STA (INFRACFG_AO_BASE + 0x90) +#define UART0_CLOCK_GATE_BIT (1U<<22) +#define UART1_CLOCK_GATE_BIT (1U<<23) + +/* UART registers */ +#define UART_RBR(_baseaddr) (_baseaddr + 0x0) +#define UART_THR(_baseaddr) (_baseaddr + 0x0) +#define UART_IER(_baseaddr) (_baseaddr + 0x4) +#define UART_IIR(_baseaddr) (_baseaddr + 0x8) +#define UART_FCR(_baseaddr) (_baseaddr + 0x8) +#define UART_LCR(_baseaddr) (_baseaddr + 0xc) +#define UART_MCR(_baseaddr) (_baseaddr + 0x10) +#define UART_LSR(_baseaddr) (_baseaddr + 0x14) +#define UART_MSR(_baseaddr) (_baseaddr + 0x18) +#define UART_SCR(_baseaddr) (_baseaddr + 0x1c) +#define UART_DLL(_baseaddr) (_baseaddr + 0x0) +#define UART_DLH(_baseaddr) (_baseaddr + 0x4) +#define UART_EFR(_baseaddr) (_baseaddr + 0x8) +#define UART_XON1(_baseaddr) (_baseaddr + 0x10) +#define UART_XON2(_baseaddr) (_baseaddr + 0x14) +#define UART_XOFF1(_baseaddr) (_baseaddr + 0x18) +#define UART_XOFF2(_baseaddr) (_baseaddr + 0x1c) +#define UART_AUTOBAUD(_baseaddr) (_baseaddr + 0x20) +#define UART_HIGHSPEED(_baseaddr) (_baseaddr + 0x24) +#define UART_SAMPLE_COUNT(_baseaddr) (_baseaddr + 0x28) +#define UART_SAMPLE_POINT(_baseaddr) (_baseaddr + 0x2c) +#define UART_AUTOBAUD_REG(_baseaddr) (_baseaddr + 0x30) +#define UART_RATE_FIX_REG(_baseaddr) (_baseaddr + 0x34) +#define UART_AUTO_BAUDSAMPLE(_baseaddr) (_baseaddr + 0x38) +#define UART_GUARD(_baseaddr) (_baseaddr + 0x3c) +#define UART_ESCAPE_DAT(_baseaddr) (_baseaddr + 0x40) +#define UART_ESCAPE_EN(_baseaddr) (_baseaddr + 0x44) +#define UART_SLEEP_EN(_baseaddr) (_baseaddr + 0x48) +#define UART_DMA_EN(_baseaddr) (_baseaddr + 0x4c) +#define UART_RXTRI_AD(_baseaddr) (_baseaddr + 0x50) +#define UART_FRACDIV_L(_baseaddr) (_baseaddr + 0x54) +#define UART_FRACDIV_M(_baseaddr) (_baseaddr + 0x58) +#define UART_FCR_RD(_baseaddr) (_baseaddr + 0x5C) +#define UART_USB_RX_SEL(_baseaddr) (_baseaddr + 0xB0) +#define UART_SLEEP_REQ(_baseaddr) (_baseaddr + 0xB4) +#define UART_SLEEP_ACK(_baseaddr) (_baseaddr + 0xB8) +#define UART_SPM_SEL(_baseaddr) (_baseaddr + 0xBC) +#define UART_LCR_DLAB 0x0080 +#define UART_LCR_MODE_B 0x00bf + +enum uart_port_ID { + UART_PORT0 = 0, + UART_PORT1 +}; + +struct mt_uart_register { + uint32_t dll; + uint32_t dlh; + uint32_t ier; + uint32_t lcr; + uint32_t mcr; + uint32_t fcr; + uint32_t lsr; + uint32_t scr; + uint32_t efr; + uint32_t highspeed; + uint32_t sample_count; + uint32_t sample_point; + uint32_t fracdiv_l; + uint32_t fracdiv_m; + uint32_t escape_en; + uint32_t guard; + uint32_t rx_sel; +}; + +struct mt_uart { + unsigned long base; + struct mt_uart_register registers; +}; + +/* external API */ +void mt_uart_save(void); +void mt_uart_restore(void); +void mt_console_uart_cg(int on); +uint32_t mt_console_uart_cg_status(void); + +#endif /* __UART_H__ */ |