/*
* Copyright (C) 2007 Google, Inc.
* Author: Robert Love <rlove@google.com>
* Copyright (c) 2011, Code Aurora Forum. All rights reserved.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* 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.
*/
#ifndef __DRIVERS_SERIAL_MSM_SERIAL_H
#define __DRIVERS_SERIAL_MSM_SERIAL_H
#define UART_MR1 0x0000
#define UART_MR1_AUTO_RFR_LEVEL0 0x3F
#define UART_MR1_AUTO_RFR_LEVEL1 0x3FF00
#define UART_DM_MR1_AUTO_RFR_LEVEL1 0xFFFFFF00
#define UART_MR1_RX_RDY_CTL BIT(7)
#define UART_MR1_CTS_CTL BIT(6)
#define UART_MR2 0x0004
#define UART_MR2_ERROR_MODE BIT(6)
#define UART_MR2_BITS_PER_CHAR 0x30
#define UART_MR2_BITS_PER_CHAR_5 (0x0 << 4)
#define UART_MR2_BITS_PER_CHAR_6 (0x1 << 4)
#define UART_MR2_BITS_PER_CHAR_7 (0x2 << 4)
#define UART_MR2_BITS_PER_CHAR_8 (0x3 << 4)
#define UART_MR2_STOP_BIT_LEN_ONE (0x1 << 2)
#define UART_MR2_STOP_BIT_LEN_TWO (0x3 << 2)
#define UART_MR2_PARITY_MODE_NONE 0x0
#define UART_MR2_PARITY_MODE_ODD 0x1
#define UART_MR2_PARITY_MODE_EVEN 0x2
#define UART_MR2_PARITY_MODE_SPACE 0x3
#define UART_MR2_PARITY_MODE 0x3
#define UART_CSR 0x0008
#define UART_TF 0x000C
#define UARTDM_TF 0x0070
#define UART_CR 0x0010
#define UART_CR_CMD_NULL (0 << 4)
#define UART_CR_CMD_RESET_RX (1 << 4)
#define UART_CR_CMD_RESET_TX (2 << 4)
#define UART_CR_CMD_RESET_ERR (3 << 4)
#define UART_CR_CMD_RESET_BREAK_INT (4 << 4)
#define UART_CR_CMD_START_BREAK (5 << 4)
#define UART_CR_CMD_STOP_BREAK (6 << 4)
#define UART_CR_CMD_RESET_CTS (7 << 4)
#define UART_CR_CMD_RESET_STALE_INT (8 << 4)
#define UART_CR_CMD_PACKET_MODE (9 << 4)
#define UART_CR_CMD_MODE_RESET (12 << 4)
#define UART_CR_CMD_SET_RFR (13 << 4)
#define UART_CR_CMD_RESET_RFR (14 << 4)
#define UART_CR_CMD_PROTECTION_EN (16 << 4)
#define UART_CR_CMD_STALE_EVENT_DISABLE (6 << 8)
#define UART_CR_CMD_STALE_EVENT_ENABLE (80 << 4)
#define UART_CR_CMD_FORCE_STALE (4 << 8)
#define UART_CR_CMD_RESET_TX_READY (3 << 8)
#define UART_CR_TX_DISABLE BIT(3)
#define UART_CR_TX_ENABLE BIT(2)
#define UART_CR_RX_DISABLE BIT(1)
#define UART_CR_RX_ENABLE BIT(0)
#define UART_CR_CMD_RESET_RXBREAK_START ((1 << 11) | (2 << 4))
#define UART_IMR 0x0014
#define UART_IMR_TXLEV BIT(0)
#define UART_IMR_RXSTALE BIT(3)
#define UART_IMR_RXLEV BIT(4)
#define UART_IMR_DELTA_CTS BIT(5)
#define UART_IMR_CURRENT_CTS BIT(6)
#define UART_IMR_RXBREAK_START BIT(10)
#define UART_IPR_RXSTALE_LAST 0x20
#define UART_IPR_STALE_LSB 0x1F
#define UART_IPR_STALE_TIMEOUT_MSB 0x3FF80
#define UART_DM_IPR_STALE_TIMEOUT_MSB 0xFFFFFF80
#define UART_IPR 0x0018
#define UART_TFWR 0x001C
#define UART_RFWR 0x0020
#define UART_HCR 0x0024
#define UART_MREG 0x0028
#define UART_NREG 0x002C
#define UART_DREG 0x0030
#define UART_MNDREG 0x0034
#define UART_IRDA 0x0038
#define UART_MISR_MODE 0x0040
#define UART_MISR_RESET 0x0044
#define UART_MISR_EXPORT 0x0048
#define UART_MISR_VAL 0x004C
#define UART_TEST_CTRL 0x0050
#define UART_SR 0x0008
#define UART_SR_HUNT_CHAR BIT(7)
#define UART_SR_RX_BREAK BIT(6)
#define UART_SR_PAR_FRAME_ERR BIT(5)
#define UART_SR_OVERRUN BIT(4)
#define UART_SR_TX_EMPTY BIT(3)
#define UART_SR_TX_READY BIT(2)
#define UART_SR_RX_FULL BIT(1)
#define UART_SR_RX_READY BIT(0)
#define UART_RF 0x000C
#define UARTDM_RF 0x0070
#define UART_MISR 0x0010
#define UART_ISR 0x0014
#define UART_ISR_TX_READY BIT(7)
#define UARTDM_RXFS 0x50
#define UARTDM_RXFS_BUF_SHIFT 0x7
#define UARTDM_RXFS_BUF_MASK 0x7
#define UARTDM_DMEN 0x3C
#define UARTDM_DMEN_RX_SC_ENABLE BIT(5)
#define UARTDM_DMEN_TX_SC_ENABLE BIT(4)
#define UARTDM_DMEN_TX_BAM_ENABLE BIT(2) /* UARTDM_1P4 */
#define UARTDM_DMEN_TX_DM_ENABLE BIT(0) /* < UARTDM_1P4 */
#define UARTDM_DMEN_RX_BAM_ENABLE BIT(3) /* UARTDM_1P4 */
#define UARTDM_DMEN_RX_DM_ENABLE BIT(1) /* < UARTDM_1P4 */
#define UARTDM_DMRX 0x34
#define UARTDM_NCF_TX 0x40
#define UARTDM_RX_TOTAL_SNAP 0x38
#define UART_TO_MSM(uart_port) ((struct msm_port *) uart_port)
static inline
void msm_write(struct uart_port *port, unsigned int val, unsigned int off)
{
writel_relaxed(val, port->membase + off);
}
static inline
unsigned int msm_read(struct uart_port *port, unsigned int off)
{
return readl_relaxed(port->membase + off);
}
/*
* Setup the MND registers to use the TCXO clock.
*/
static inline void msm_serial_set_mnd_regs_tcxo(struct uart_port *port)
{
msm_write(port, 0x06, UART_MREG);
msm_write(port, 0xF1, UART_NREG);
msm_write(port, 0x0F, UART_DREG);
msm_write(port, 0x1A, UART_MNDREG);
port->uartclk = 1843200;
}
/*
* Setup the MND registers to use the TCXO clock divided by 4.
*/
static inline void msm_serial_set_mnd_regs_tcxoby4(struct uart_port *port)
{
msm_write(port, 0x18, UART_MREG);
msm_write(port, 0xF6, UART_NREG);
msm_write(port, 0x0F, UART_DREG);
msm_write(port, 0x0A, UART_MNDREG);
port->uartclk = 1843200;
}
static inline
void msm_serial_set_mnd_regs_from_uartclk(struct uart_port *port)
{
if (port->uartclk == 19200000)
msm_serial_set_mnd_regs_tcxo(port);
else if (port->uartclk == 4800000)
msm_serial_set_mnd_regs_tcxoby4(port);
}
#define msm_serial_set_mnd_regs msm_serial_set_mnd_regs_from_uartclk
#endif /* __DRIVERS_SERIAL_MSM_SERIAL_H */
