diff options
Diffstat (limited to 'platform/mediatek/mt6797/uart.c')
| -rw-r--r-- | platform/mediatek/mt6797/uart.c | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/platform/mediatek/mt6797/uart.c b/platform/mediatek/mt6797/uart.c deleted file mode 100644 index 21fe0e87..00000000 --- a/platform/mediatek/mt6797/uart.c +++ /dev/null @@ -1,157 +0,0 @@ -/* - * Copyright (c) 2015 MediaTek Inc. - * - * Permission is hereby granted, free of charge, to any person obtaining - * a copy of this software and associated documentation files - * (the "Software"), to deal in the Software without restriction, - * including without limitation the rights to use, copy, modify, merge, - * publish, distribute, sublicense, and/or sell copies of the Software, - * and to permit persons to whom the Software is furnished to do so, - * subject to the following conditions: - * - * The above copyright notice and this permission notice shall be - * included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. - * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY - * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, - * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE - * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ -#include <debug.h> -#include <reg.h> -#include <dev/uart.h> -#include <string.h> - -#include <platform/mt_typedefs.h> -#include <platform/mt_reg_base.h> -#include <platform/mt_uart.h> -#include <sync_write.h> - -// output uart port -static volatile unsigned int g_uart; -// output uart baudrate -static unsigned int g_brg; - -static void uart_setbrg(void) -{ - unsigned int byte,speed; - unsigned int highspeed; - unsigned int quot, divisor, remainder; - unsigned int uartclk; - unsigned short data, high_speed_div, sample_count, sample_point; - unsigned int tmp_div; - - speed = g_brg; - uartclk = UART_SRC_CLK; - - if (speed <= 115200 ) { - highspeed = 0; - quot = 16; - } else { - highspeed = 3; - quot = 1; - } - - if (highspeed < 3) { /*0~2*/ - /* Set divisor DLL and DLH */ - divisor = uartclk / (quot * speed); - remainder = uartclk % (quot * speed); - - if (remainder >= (quot / 2) * speed) - divisor += 1; - - mt_reg_sync_writew(highspeed, UART_HIGHSPEED(g_uart)); - byte = DRV_Reg32(UART_LCR(g_uart)); /* DLAB start */ - mt_reg_sync_writel((byte | UART_LCR_DLAB), UART_LCR(g_uart)); - mt_reg_sync_writel((divisor & 0x00ff), UART_DLL(g_uart)); - mt_reg_sync_writel(((divisor >> 8)&0x00ff), UART_DLH(g_uart)); - mt_reg_sync_writel(byte, UART_LCR(g_uart)); /* DLAB end */ - } else { - data=(unsigned short)(uartclk/speed); - high_speed_div = (data>>8) + 1; // divided by 256 - - tmp_div=uartclk/(speed*high_speed_div); - divisor = (unsigned short)tmp_div; - - remainder = (uartclk)%(high_speed_div*speed); - /*get (sample_count+1)*/ - if (remainder >= ((speed)*(high_speed_div))>>1) - divisor = (unsigned short)(tmp_div+1); - else - divisor = (unsigned short)tmp_div; - - sample_count=divisor-1; - - /*get the sample point*/ - sample_point=(sample_count-1)>>1; - - /*configure register*/ - mt_reg_sync_writel(highspeed, UART_HIGHSPEED(g_uart)); - - byte = DRV_Reg32(UART_LCR(g_uart)); /* DLAB start */ - mt_reg_sync_writel((byte | UART_LCR_DLAB), UART_LCR(g_uart)); - mt_reg_sync_writel((high_speed_div & 0x00ff), UART_DLL(g_uart)); - mt_reg_sync_writel(((high_speed_div >> 8)&0x00ff), UART_DLH(g_uart)); - mt_reg_sync_writel(sample_count, UART_SAMPLE_COUNT(g_uart)); - mt_reg_sync_writel(sample_point, UART_SAMPLE_POINT(g_uart)); - mt_reg_sync_writel(byte, UART_LCR(g_uart)); /* DLAB end */ - } -} - -void mtk_set_current_uart(MTK_UART uart_base) -{ - g_uart = uart_base; -} - -int mtk_get_current_uart(void) -{ - return g_uart; -} - -void uart_init_early(void) -{ - mtk_set_current_uart(UART1); - - DRV_SetReg32(UART_FCR(g_uart), UART_FCR_FIFO_INIT); /* clear fifo */ - mt_reg_sync_writew(UART_NONE_PARITY | UART_WLS_8 | UART_1_STOP, UART_LCR(g_uart)); - g_brg = CONFIG_BAUDRATE; - uart_setbrg(); -} - -void uart_init(void) -{ -} - -void uart_flush_tx(int port) -{ -} - -void uart_flush_rx(int port) -{ -} - -void uart_init_port(int port, uint baud) -{ -} - -int uart_putc(int port, char c) -{ - while (!(DRV_Reg32(UART_LSR(port)) & UART_LSR_THRE)); - - if (c == '\n') - mt_reg_sync_writel((unsigned int)'\r', UART_THR(port)); - - mt_reg_sync_writel((unsigned int)c, UART_THR(port)); - - return 0; -} - -int uart_getc(int port, bool wait) -{ - while (!(DRV_Reg32(UART_LSR(port)) & UART_LSR_DR)); - return (int)DRV_Reg32(UART_RBR(port)); -} - |