mirror of
https://github.com/AsahiLinux/u-boot
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2016, STMicroelectronics - All Rights Reserved
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* Author(s): Vikas Manocha, <vikas.manocha@st.com> for STMicroelectronics.
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*/
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#ifndef _SERIAL_STM32_
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#define _SERIAL_STM32_
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#define CR1_OFFSET(x) (x ? 0x0c : 0x00)
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#define CR3_OFFSET(x) (x ? 0x14 : 0x08)
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#define BRR_OFFSET(x) (x ? 0x08 : 0x0c)
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#define ISR_OFFSET(x) (x ? 0x00 : 0x1c)
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#define ICR_OFFSET 0x20
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/*
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* STM32F4 has one Data Register (DR) for received or transmitted
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* data, so map Receive Data Register (RDR) and Transmit Data
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* Register (TDR) at the same offset
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*/
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#define RDR_OFFSET(x) (x ? 0x04 : 0x24)
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#define TDR_OFFSET(x) (x ? 0x04 : 0x28)
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struct stm32_uart_info {
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u8 uart_enable_bit; /* UART_CR1_UE */
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bool stm32f4; /* true for STM32F4, false otherwise */
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bool has_fifo;
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};
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struct stm32_uart_info stm32f4_info = {
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.stm32f4 = true,
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.uart_enable_bit = 13,
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.has_fifo = false,
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};
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struct stm32_uart_info stm32f7_info = {
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.uart_enable_bit = 0,
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.stm32f4 = false,
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.has_fifo = false,
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};
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struct stm32_uart_info stm32h7_info = {
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.uart_enable_bit = 0,
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.stm32f4 = false,
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.has_fifo = true,
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};
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/* Information about a serial port */
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struct stm32x7_serial_platdata {
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fdt_addr_t base; /* address of registers in physical memory */
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struct stm32_uart_info *uart_info;
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unsigned long int clock_rate;
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};
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#define USART_CR1_FIFOEN BIT(29)
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#define USART_CR1_OVER8 BIT(15)
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#define USART_CR1_TE BIT(3)
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#define USART_CR1_RE BIT(2)
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#define USART_CR3_OVRDIS BIT(12)
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#define USART_ISR_FLAG_ORE BIT(3)
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#define USART_ISR_FLAG_RXNE BIT(5)
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#define USART_ISR_FLAG_TXE BIT(7)
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#define USART_BRR_F_MASK GENMASK(7, 0)
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#define USART_BRR_M_SHIFT 4
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#define USART_BRR_M_MASK GENMASK(15, 4)
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#define USART_ICR_OREF BIT(3)
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#endif
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