mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-23 15:49:17 +07:00
470f229754
This patch fixes the way of comparison for handling of two or more clock sources for UART. For example, if just only one clock source is defined even though there are two clock sources for UART, the serial driver does not set proper clock up. Of course, it is problem. So this patch changes the condition of comparison to avoid useless setup clock and adds a flag 'NO_NEED_CHECK_CLKSRC' which means selection of source clock is not required. In addition, since the Exynos4210 has only one clock source for UART this patch adds the flag into its common_init_uarts(). Signed-off-by: Boojin Kim <boojin.kim@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
286 lines
8.7 KiB
C
286 lines
8.7 KiB
C
/* arch/arm/plat-samsung/include/plat/regs-serial.h
|
|
*
|
|
* From linux/include/asm-arm/hardware/serial_s3c2410.h
|
|
*
|
|
* Internal header file for Samsung S3C2410 serial ports (UART0-2)
|
|
*
|
|
* Copyright (C) 2002 Shane Nay (shane@minirl.com)
|
|
*
|
|
* Additional defines, Copyright 2003 Simtec Electronics (linux@simtec.co.uk)
|
|
*
|
|
* Adapted from:
|
|
*
|
|
* Internal header file for MX1ADS serial ports (UART1 & 2)
|
|
*
|
|
* Copyright (C) 2002 Shane Nay (shane@minirl.com)
|
|
*
|
|
* 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, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#ifndef __ASM_ARM_REGS_SERIAL_H
|
|
#define __ASM_ARM_REGS_SERIAL_H
|
|
|
|
#define S3C24XX_VA_UART0 (S3C_VA_UART)
|
|
#define S3C24XX_VA_UART1 (S3C_VA_UART + 0x4000 )
|
|
#define S3C24XX_VA_UART2 (S3C_VA_UART + 0x8000 )
|
|
#define S3C24XX_VA_UART3 (S3C_VA_UART + 0xC000 )
|
|
|
|
#define S3C2410_PA_UART0 (S3C24XX_PA_UART)
|
|
#define S3C2410_PA_UART1 (S3C24XX_PA_UART + 0x4000 )
|
|
#define S3C2410_PA_UART2 (S3C24XX_PA_UART + 0x8000 )
|
|
#define S3C2443_PA_UART3 (S3C24XX_PA_UART + 0xC000 )
|
|
|
|
#define S3C2410_URXH (0x24)
|
|
#define S3C2410_UTXH (0x20)
|
|
#define S3C2410_ULCON (0x00)
|
|
#define S3C2410_UCON (0x04)
|
|
#define S3C2410_UFCON (0x08)
|
|
#define S3C2410_UMCON (0x0C)
|
|
#define S3C2410_UBRDIV (0x28)
|
|
#define S3C2410_UTRSTAT (0x10)
|
|
#define S3C2410_UERSTAT (0x14)
|
|
#define S3C2410_UFSTAT (0x18)
|
|
#define S3C2410_UMSTAT (0x1C)
|
|
|
|
#define S3C2410_LCON_CFGMASK ((0xF<<3)|(0x3))
|
|
|
|
#define S3C2410_LCON_CS5 (0x0)
|
|
#define S3C2410_LCON_CS6 (0x1)
|
|
#define S3C2410_LCON_CS7 (0x2)
|
|
#define S3C2410_LCON_CS8 (0x3)
|
|
#define S3C2410_LCON_CSMASK (0x3)
|
|
|
|
#define S3C2410_LCON_PNONE (0x0)
|
|
#define S3C2410_LCON_PEVEN (0x5 << 3)
|
|
#define S3C2410_LCON_PODD (0x4 << 3)
|
|
#define S3C2410_LCON_PMASK (0x7 << 3)
|
|
|
|
#define S3C2410_LCON_STOPB (1<<2)
|
|
#define S3C2410_LCON_IRM (1<<6)
|
|
|
|
#define S3C2440_UCON_CLKMASK (3<<10)
|
|
#define S3C2440_UCON_PCLK (0<<10)
|
|
#define S3C2440_UCON_UCLK (1<<10)
|
|
#define S3C2440_UCON_PCLK2 (2<<10)
|
|
#define S3C2440_UCON_FCLK (3<<10)
|
|
#define S3C2443_UCON_EPLL (3<<10)
|
|
|
|
#define S3C6400_UCON_CLKMASK (3<<10)
|
|
#define S3C6400_UCON_PCLK (0<<10)
|
|
#define S3C6400_UCON_PCLK2 (2<<10)
|
|
#define S3C6400_UCON_UCLK0 (1<<10)
|
|
#define S3C6400_UCON_UCLK1 (3<<10)
|
|
|
|
#define S3C2440_UCON2_FCLK_EN (1<<15)
|
|
#define S3C2440_UCON0_DIVMASK (15 << 12)
|
|
#define S3C2440_UCON1_DIVMASK (15 << 12)
|
|
#define S3C2440_UCON2_DIVMASK (7 << 12)
|
|
#define S3C2440_UCON_DIVSHIFT (12)
|
|
|
|
#define S3C2412_UCON_CLKMASK (3<<10)
|
|
#define S3C2412_UCON_UCLK (1<<10)
|
|
#define S3C2412_UCON_USYSCLK (3<<10)
|
|
#define S3C2412_UCON_PCLK (0<<10)
|
|
#define S3C2412_UCON_PCLK2 (2<<10)
|
|
|
|
#define S3C2410_UCON_UCLK (1<<10)
|
|
#define S3C2410_UCON_SBREAK (1<<4)
|
|
|
|
#define S3C2410_UCON_TXILEVEL (1<<9)
|
|
#define S3C2410_UCON_RXILEVEL (1<<8)
|
|
#define S3C2410_UCON_TXIRQMODE (1<<2)
|
|
#define S3C2410_UCON_RXIRQMODE (1<<0)
|
|
#define S3C2410_UCON_RXFIFO_TOI (1<<7)
|
|
#define S3C2443_UCON_RXERR_IRQEN (1<<6)
|
|
#define S3C2443_UCON_LOOPBACK (1<<5)
|
|
|
|
#define S3C2410_UCON_DEFAULT (S3C2410_UCON_TXILEVEL | \
|
|
S3C2410_UCON_RXILEVEL | \
|
|
S3C2410_UCON_TXIRQMODE | \
|
|
S3C2410_UCON_RXIRQMODE | \
|
|
S3C2410_UCON_RXFIFO_TOI)
|
|
|
|
#define S3C2410_UFCON_FIFOMODE (1<<0)
|
|
#define S3C2410_UFCON_TXTRIG0 (0<<6)
|
|
#define S3C2410_UFCON_RXTRIG8 (1<<4)
|
|
#define S3C2410_UFCON_RXTRIG12 (2<<4)
|
|
|
|
/* S3C2440 FIFO trigger levels */
|
|
#define S3C2440_UFCON_RXTRIG1 (0<<4)
|
|
#define S3C2440_UFCON_RXTRIG8 (1<<4)
|
|
#define S3C2440_UFCON_RXTRIG16 (2<<4)
|
|
#define S3C2440_UFCON_RXTRIG32 (3<<4)
|
|
|
|
#define S3C2440_UFCON_TXTRIG0 (0<<6)
|
|
#define S3C2440_UFCON_TXTRIG16 (1<<6)
|
|
#define S3C2440_UFCON_TXTRIG32 (2<<6)
|
|
#define S3C2440_UFCON_TXTRIG48 (3<<6)
|
|
|
|
#define S3C2410_UFCON_RESETBOTH (3<<1)
|
|
#define S3C2410_UFCON_RESETTX (1<<2)
|
|
#define S3C2410_UFCON_RESETRX (1<<1)
|
|
|
|
#define S3C2410_UFCON_DEFAULT (S3C2410_UFCON_FIFOMODE | \
|
|
S3C2410_UFCON_TXTRIG0 | \
|
|
S3C2410_UFCON_RXTRIG8 )
|
|
|
|
#define S3C2410_UMCOM_AFC (1<<4)
|
|
#define S3C2410_UMCOM_RTS_LOW (1<<0)
|
|
|
|
#define S3C2412_UMCON_AFC_63 (0<<5) /* same as s3c2443 */
|
|
#define S3C2412_UMCON_AFC_56 (1<<5)
|
|
#define S3C2412_UMCON_AFC_48 (2<<5)
|
|
#define S3C2412_UMCON_AFC_40 (3<<5)
|
|
#define S3C2412_UMCON_AFC_32 (4<<5)
|
|
#define S3C2412_UMCON_AFC_24 (5<<5)
|
|
#define S3C2412_UMCON_AFC_16 (6<<5)
|
|
#define S3C2412_UMCON_AFC_8 (7<<5)
|
|
|
|
#define S3C2410_UFSTAT_TXFULL (1<<9)
|
|
#define S3C2410_UFSTAT_RXFULL (1<<8)
|
|
#define S3C2410_UFSTAT_TXMASK (15<<4)
|
|
#define S3C2410_UFSTAT_TXSHIFT (4)
|
|
#define S3C2410_UFSTAT_RXMASK (15<<0)
|
|
#define S3C2410_UFSTAT_RXSHIFT (0)
|
|
|
|
/* UFSTAT S3C24A0 */
|
|
#define S3C24A0_UFSTAT_TXFULL (1 << 14)
|
|
#define S3C24A0_UFSTAT_RXFULL (1 << 6)
|
|
#define S3C24A0_UFSTAT_TXMASK (63 << 8)
|
|
#define S3C24A0_UFSTAT_TXSHIFT (8)
|
|
#define S3C24A0_UFSTAT_RXMASK (63)
|
|
#define S3C24A0_UFSTAT_RXSHIFT (0)
|
|
|
|
/* UFSTAT S3C2443 same as S3C2440 */
|
|
#define S3C2440_UFSTAT_TXFULL (1<<14)
|
|
#define S3C2440_UFSTAT_RXFULL (1<<6)
|
|
#define S3C2440_UFSTAT_TXSHIFT (8)
|
|
#define S3C2440_UFSTAT_RXSHIFT (0)
|
|
#define S3C2440_UFSTAT_TXMASK (63<<8)
|
|
#define S3C2440_UFSTAT_RXMASK (63)
|
|
|
|
#define S3C2410_UTRSTAT_TXE (1<<2)
|
|
#define S3C2410_UTRSTAT_TXFE (1<<1)
|
|
#define S3C2410_UTRSTAT_RXDR (1<<0)
|
|
|
|
#define S3C2410_UERSTAT_OVERRUN (1<<0)
|
|
#define S3C2410_UERSTAT_FRAME (1<<2)
|
|
#define S3C2410_UERSTAT_BREAK (1<<3)
|
|
#define S3C2443_UERSTAT_PARITY (1<<1)
|
|
|
|
#define S3C2410_UERSTAT_ANY (S3C2410_UERSTAT_OVERRUN | \
|
|
S3C2410_UERSTAT_FRAME | \
|
|
S3C2410_UERSTAT_BREAK)
|
|
|
|
#define S3C2410_UMSTAT_CTS (1<<0)
|
|
#define S3C2410_UMSTAT_DeltaCTS (1<<2)
|
|
|
|
#define S3C2443_DIVSLOT (0x2C)
|
|
|
|
/* S3C64XX interrupt registers. */
|
|
#define S3C64XX_UINTP 0x30
|
|
#define S3C64XX_UINTSP 0x34
|
|
#define S3C64XX_UINTM 0x38
|
|
|
|
/* Following are specific to S5PV210 */
|
|
#define S5PV210_UCON_CLKMASK (1<<10)
|
|
#define S5PV210_UCON_PCLK (0<<10)
|
|
#define S5PV210_UCON_UCLK (1<<10)
|
|
|
|
#define S5PV210_UFCON_TXTRIG0 (0<<8)
|
|
#define S5PV210_UFCON_TXTRIG4 (1<<8)
|
|
#define S5PV210_UFCON_TXTRIG8 (2<<8)
|
|
#define S5PV210_UFCON_TXTRIG16 (3<<8)
|
|
#define S5PV210_UFCON_TXTRIG32 (4<<8)
|
|
#define S5PV210_UFCON_TXTRIG64 (5<<8)
|
|
#define S5PV210_UFCON_TXTRIG128 (6<<8)
|
|
#define S5PV210_UFCON_TXTRIG256 (7<<8)
|
|
|
|
#define S5PV210_UFCON_RXTRIG1 (0<<4)
|
|
#define S5PV210_UFCON_RXTRIG4 (1<<4)
|
|
#define S5PV210_UFCON_RXTRIG8 (2<<4)
|
|
#define S5PV210_UFCON_RXTRIG16 (3<<4)
|
|
#define S5PV210_UFCON_RXTRIG32 (4<<4)
|
|
#define S5PV210_UFCON_RXTRIG64 (5<<4)
|
|
#define S5PV210_UFCON_RXTRIG128 (6<<4)
|
|
#define S5PV210_UFCON_RXTRIG256 (7<<4)
|
|
|
|
#define S5PV210_UFSTAT_TXFULL (1<<24)
|
|
#define S5PV210_UFSTAT_RXFULL (1<<8)
|
|
#define S5PV210_UFSTAT_TXMASK (255<<16)
|
|
#define S5PV210_UFSTAT_TXSHIFT (16)
|
|
#define S5PV210_UFSTAT_RXMASK (255<<0)
|
|
#define S5PV210_UFSTAT_RXSHIFT (0)
|
|
|
|
#define NO_NEED_CHECK_CLKSRC 1
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
/* struct s3c24xx_uart_clksrc
|
|
*
|
|
* this structure defines a named clock source that can be used for the
|
|
* uart, so that the best clock can be selected for the requested baud
|
|
* rate.
|
|
*
|
|
* min_baud and max_baud define the range of baud-rates this clock is
|
|
* acceptable for, if they are both zero, it is assumed any baud rate that
|
|
* can be generated from this clock will be used.
|
|
*
|
|
* divisor gives the divisor from the clock to the one seen by the uart
|
|
*/
|
|
|
|
struct s3c24xx_uart_clksrc {
|
|
const char *name;
|
|
unsigned int divisor;
|
|
unsigned int min_baud;
|
|
unsigned int max_baud;
|
|
};
|
|
|
|
/* configuration structure for per-machine configurations for the
|
|
* serial port
|
|
*
|
|
* the pointer is setup by the machine specific initialisation from the
|
|
* arch/arm/mach-s3c2410/ directory.
|
|
*/
|
|
|
|
struct s3c2410_uartcfg {
|
|
unsigned char hwport; /* hardware port number */
|
|
unsigned char unused;
|
|
unsigned short flags;
|
|
upf_t uart_flags; /* default uart flags */
|
|
|
|
unsigned int has_fracval;
|
|
|
|
unsigned long ucon; /* value of ucon for port */
|
|
unsigned long ulcon; /* value of ulcon for port */
|
|
unsigned long ufcon; /* value of ufcon for port */
|
|
|
|
struct s3c24xx_uart_clksrc *clocks;
|
|
unsigned int clocks_size;
|
|
};
|
|
|
|
/* s3c24xx_uart_devs
|
|
*
|
|
* this is exported from the core as we cannot use driver_register(),
|
|
* or platform_add_device() before the console_initcall()
|
|
*/
|
|
|
|
extern struct platform_device *s3c24xx_uart_devs[4];
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#endif /* __ASM_ARM_REGS_SERIAL_H */
|
|
|