ipq_uart.h

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/* SPDX-License-Identifier: BSD-3-Clause */
 
#ifndef __UART_DM_H__
#define __UART_DM_H__
 
#define PERIPH_BLK_BLSP 1
 
#define MSM_BOOT_UART_DM_EXTR_BITS(value, start_pos, end_pos) \
        ((value << (32 - end_pos)) >> (32 - (end_pos - start_pos)))
 
extern void __udelay(unsigned long usec);
 
enum MSM_BOOT_UART_DM_PARITY_MODE {
        MSM_BOOT_UART_DM_NO_PARITY,
        MSM_BOOT_UART_DM_ODD_PARITY,
        MSM_BOOT_UART_DM_EVEN_PARITY,
        MSM_BOOT_UART_DM_SPACE_PARITY
};
 
/* UART Stop Bit Length */
enum MSM_BOOT_UART_DM_STOP_BIT_LEN {
        MSM_BOOT_UART_DM_SBL_9_16,
        MSM_BOOT_UART_DM_SBL_1,
        MSM_BOOT_UART_DM_SBL_1_9_16,
        MSM_BOOT_UART_DM_SBL_2
};
 
/* UART Bits per Char */
enum MSM_BOOT_UART_DM_BITS_PER_CHAR {
        MSM_BOOT_UART_DM_5_BPS,
        MSM_BOOT_UART_DM_6_BPS,
        MSM_BOOT_UART_DM_7_BPS,
        MSM_BOOT_UART_DM_8_BPS
};
 
/* 8-N-1 Configuration */
#define MSM_BOOT_UART_DM_8_N_1_MODE     (MSM_BOOT_UART_DM_NO_PARITY | \
                                         (MSM_BOOT_UART_DM_SBL_1 << 2) | \
                                         (MSM_BOOT_UART_DM_8_BPS << 4))
 
/* UART_DM Registers */
 
/* UART Operational Mode Register */
#define MSM_BOOT_UART_DM_MR1(base)      ((base) + 0x00)
#define MSM_BOOT_UART_DM_MR2(base)      ((base) + 0x04)
#define MSM_BOOT_UART_DM_RXBRK_ZERO_CHAR_OFF (1 << 8)
#define MSM_BOOT_UART_DM_LOOPBACK       (1 << 7)
 
/* UART Clock Selection Register */
#if PERIPH_BLK_BLSP
#define MSM_BOOT_UART_DM_CSR(base)      ((base) + 0xA0)
#else
#define MSM_BOOT_UART_DM_CSR(base)      ((base) + 0x08)
#endif
 
/* UART DM TX FIFO Registers - 4 */
#if PERIPH_BLK_BLSP
#define MSM_BOOT_UART_DM_TF(base, x)    ((base) + 0x100+(4*(x)))
#else
#define MSM_BOOT_UART_DM_TF(base, x)    ((base) + 0x70+(4*(x)))
#endif
 
/* UART Command Register */
#if PERIPH_BLK_BLSP
#define MSM_BOOT_UART_DM_CR(base)       ((base) + 0xA8)
#else
#define MSM_BOOT_UART_DM_CR(base)       ((base) + 0x10)
#endif
#define MSM_BOOT_UART_DM_CR_RX_ENABLE        (1 << 0)
#define MSM_BOOT_UART_DM_CR_RX_DISABLE       (1 << 1)
#define MSM_BOOT_UART_DM_CR_TX_ENABLE        (1 << 2)
#define MSM_BOOT_UART_DM_CR_TX_DISABLE       (1 << 3)
 
/* UART Channel Command */
#define MSM_BOOT_UART_DM_CR_CH_CMD_LSB(x)    ((x & 0x0f) << 4)
#define MSM_BOOT_UART_DM_CR_CH_CMD_MSB(x)    ((x >> 4) << 11)
#define MSM_BOOT_UART_DM_CR_CH_CMD(x)           \
        (MSM_BOOT_UART_DM_CR_CH_CMD_LSB(x) | MSM_BOOT_UART_DM_CR_CH_CMD_MSB(x))
#define MSM_BOOT_UART_DM_CMD_NULL            MSM_BOOT_UART_DM_CR_CH_CMD(0)
#define MSM_BOOT_UART_DM_CMD_RESET_RX        MSM_BOOT_UART_DM_CR_CH_CMD(1)
#define MSM_BOOT_UART_DM_CMD_RESET_TX        MSM_BOOT_UART_DM_CR_CH_CMD(2)
#define MSM_BOOT_UART_DM_CMD_RESET_ERR_STAT  MSM_BOOT_UART_DM_CR_CH_CMD(3)
#define MSM_BOOT_UART_DM_CMD_RES_BRK_CHG_INT MSM_BOOT_UART_DM_CR_CH_CMD(4)
#define MSM_BOOT_UART_DM_CMD_START_BRK       MSM_BOOT_UART_DM_CR_CH_CMD(5)
#define MSM_BOOT_UART_DM_CMD_STOP_BRK        MSM_BOOT_UART_DM_CR_CH_CMD(6)
#define MSM_BOOT_UART_DM_CMD_RES_CTS_N       MSM_BOOT_UART_DM_CR_CH_CMD(7)
#define MSM_BOOT_UART_DM_CMD_RES_STALE_INT   MSM_BOOT_UART_DM_CR_CH_CMD(8)
#define MSM_BOOT_UART_DM_CMD_PACKET_MODE     MSM_BOOT_UART_DM_CR_CH_CMD(9)
#define MSM_BOOT_UART_DM_CMD_MODE_RESET      MSM_BOOT_UART_DM_CR_CH_CMD(C)
#define MSM_BOOT_UART_DM_CMD_SET_RFR_N       MSM_BOOT_UART_DM_CR_CH_CMD(D)
#define MSM_BOOT_UART_DM_CMD_RES_RFR_N       MSM_BOOT_UART_DM_CR_CH_CMD(E)
#define MSM_BOOT_UART_DM_CMD_RES_TX_ERR      MSM_BOOT_UART_DM_CR_CH_CMD(10)
#define MSM_BOOT_UART_DM_CMD_CLR_TX_DONE     MSM_BOOT_UART_DM_CR_CH_CMD(11)
#define MSM_BOOT_UART_DM_CMD_RES_BRKSTRT_INT MSM_BOOT_UART_DM_CR_CH_CMD(12)
#define MSM_BOOT_UART_DM_CMD_RES_BRKEND_INT  MSM_BOOT_UART_DM_CR_CH_CMD(13)
#define MSM_BOOT_UART_DM_CMD_RES_PER_FRM_INT MSM_BOOT_UART_DM_CR_CH_CMD(14)
 
/*UART General Command */
#define MSM_BOOT_UART_DM_CR_GENERAL_CMD(x)   ((x) << 8)
 
#define MSM_BOOT_UART_DM_GCMD_NULL            MSM_BOOT_UART_DM_CR_GENERAL_CMD(0)
#define MSM_BOOT_UART_DM_GCMD_CR_PROT_EN      MSM_BOOT_UART_DM_CR_GENERAL_CMD(1)
#define MSM_BOOT_UART_DM_GCMD_CR_PROT_DIS     MSM_BOOT_UART_DM_CR_GENERAL_CMD(2)
#define MSM_BOOT_UART_DM_GCMD_RES_TX_RDY_INT  MSM_BOOT_UART_DM_CR_GENERAL_CMD(3)
#define MSM_BOOT_UART_DM_GCMD_SW_FORCE_STALE  MSM_BOOT_UART_DM_CR_GENERAL_CMD(4)
#define MSM_BOOT_UART_DM_GCMD_ENA_STALE_EVT   MSM_BOOT_UART_DM_CR_GENERAL_CMD(5)
#define MSM_BOOT_UART_DM_GCMD_DIS_STALE_EVT   MSM_BOOT_UART_DM_CR_GENERAL_CMD(6)
 
/* UART Interrupt Mask Register */
#if PERIPH_BLK_BLSP
#define MSM_BOOT_UART_DM_IMR(base)             ((base) + 0xB0)
#else
#define MSM_BOOT_UART_DM_IMR(base)             ((base) + 0x14)
#endif
 
#define MSM_BOOT_UART_DM_TXLEV               (1 << 0)
#define MSM_BOOT_UART_DM_RXHUNT              (1 << 1)
#define MSM_BOOT_UART_DM_RXBRK_CHNG          (1 << 2)
#define MSM_BOOT_UART_DM_RXSTALE             (1 << 3)
#define MSM_BOOT_UART_DM_RXLEV               (1 << 4)
#define MSM_BOOT_UART_DM_DELTA_CTS           (1 << 5)
#define MSM_BOOT_UART_DM_CURRENT_CTS         (1 << 6)
#define MSM_BOOT_UART_DM_TX_READY            (1 << 7)
#define MSM_BOOT_UART_DM_TX_ERROR            (1 << 8)
#define MSM_BOOT_UART_DM_TX_DONE             (1 << 9)
#define MSM_BOOT_UART_DM_RXBREAK_START       (1 << 10)
#define MSM_BOOT_UART_DM_RXBREAK_END         (1 << 11)
#define MSM_BOOT_UART_DM_PAR_FRAME_ERR_IRQ   (1 << 12)
 
#define MSM_BOOT_UART_DM_IMR_ENABLED         (MSM_BOOT_UART_DM_TX_READY | \
                                                MSM_BOOT_UART_DM_TXLEV | \
                                                MSM_BOOT_UART_DM_RXSTALE)
 
/* UART Interrupt Programming Register */
#define MSM_BOOT_UART_DM_IPR(base)             ((base) + 0x18)
#define MSM_BOOT_UART_DM_STALE_TIMEOUT_LSB   0x0f
#define MSM_BOOT_UART_DM_STALE_TIMEOUT_MSB   0  /* Not used currently */
 
/* UART Transmit/Receive FIFO Watermark Register */
#define MSM_BOOT_UART_DM_TFWR(base)            ((base) + 0x1C)
/* Interrupt is generated when FIFO level is less than or equal to this value */
#define MSM_BOOT_UART_DM_TFW_VALUE           0
 
#define MSM_BOOT_UART_DM_RFWR(base)            ((base) + 0x20)
/*Interrupt generated when no of words in RX FIFO is greater than this value */
#define MSM_BOOT_UART_DM_RFW_VALUE           0
 
/* UART Hunt Character Register */
#define MSM_BOOT_UART_DM_HCR(base)             ((base) + 0x24)
 
/* Used for RX transfer initialization */
#define MSM_BOOT_UART_DM_DMRX(base)            ((base) + 0x34)
 
/* Default DMRX value - any value bigger than FIFO size would be fine */
#define MSM_BOOT_UART_DM_DMRX_DEF_VALUE    0x220
 
/* Register to enable IRDA function */
#if PERIPH_BLK_BLSP
#define MSM_BOOT_UART_DM_IRDA(base)            ((base) + 0xB8)
#else
#define MSM_BOOT_UART_DM_IRDA(base)            ((base) + 0x38)
#endif
 
/* UART Data Mover Enable Register */
#define MSM_BOOT_UART_DM_DMEN(base)            ((base) + 0x3C)
 
/* Number of characters for Transmission */
#define MSM_BOOT_UART_DM_NO_CHARS_FOR_TX(base) ((base) + 0x040)
 
/* UART RX FIFO Base Address */
#define MSM_BOOT_UART_DM_BADR(base)            ((base) + 0x44)
 
/* UART Status Register */
#if PERIPH_BLK_BLSP
#define MSM_BOOT_UART_DM_SR(base)              ((base) + 0x0A4)
#else
#define MSM_BOOT_UART_DM_SR(base)              ((base) + 0x008)
#endif
#define MSM_BOOT_UART_DM_SR_RXRDY            (1 << 0)
#define MSM_BOOT_UART_DM_SR_RXFULL           (1 << 1)
#define MSM_BOOT_UART_DM_SR_TXRDY            (1 << 2)
#define MSM_BOOT_UART_DM_SR_TXEMT            (1 << 3)
#define MSM_BOOT_UART_DM_SR_UART_OVERRUN     (1 << 4)
#define MSM_BOOT_UART_DM_SR_PAR_FRAME_ERR    (1 << 5)
#define MSM_BOOT_UART_DM_RX_BREAK            (1 << 6)
#define MSM_BOOT_UART_DM_HUNT_CHAR           (1 << 7)
#define MSM_BOOT_UART_DM_RX_BRK_START_LAST   (1 << 8)
 
/* UART Receive FIFO Registers - 4 in numbers */
#if PERIPH_BLK_BLSP
#define MSM_BOOT_UART_DM_RF(base, x)      ((base) + 0x140 + (4*(x)))
#else
#define MSM_BOOT_UART_DM_RF(base, x)      ((base) + 0x70 + (4*(x)))
#endif
 
/* UART Masked Interrupt Status Register */
#if PERIPH_BLK_BLSP
#define MSM_BOOT_UART_DM_MISR(base)         ((base) + 0xAC)
#else
#define MSM_BOOT_UART_DM_MISR(base)         ((base) + 0x10)
#endif
 
/* UART Interrupt Status Register */
#if PERIPH_BLK_BLSP
#define MSM_BOOT_UART_DM_ISR(base)          ((base) + 0xB4)
#else
#define MSM_BOOT_UART_DM_ISR(base)          ((base) + 0x14)
#endif
 
/* Number of characters received since the end of last RX transfer */
#if PERIPH_BLK_BLSP
#define MSM_BOOT_UART_DM_RX_TOTAL_SNAP(base)  ((base) + 0xBC)
#else
#define MSM_BOOT_UART_DM_RX_TOTAL_SNAP(base)  ((base) + 0x38)
#endif
 
/* UART TX FIFO Status Register */
#define MSM_BOOT_UART_DM_TXFS(base)           ((base) + 0x4C)
#define MSM_BOOT_UART_DM_TXFS_STATE_LSB(x)   MSM_BOOT_UART_DM_EXTR_BITS(x, 0, 6)
#define MSM_BOOT_UART_DM_TXFS_STATE_MSB(x)   \
        MSM_BOOT_UART_DM_EXTR_BITS(x, 14, 31)
#define MSM_BOOT_UART_DM_TXFS_BUF_STATE(x)   MSM_BOOT_UART_DM_EXTR_BITS(x, 7, 9)
#define MSM_BOOT_UART_DM_TXFS_ASYNC_STATE(x) \
        MSM_BOOT_UART_DM_EXTR_BITS(x, 10, 13)
 
/* UART RX FIFO Status Register */
#define MSM_BOOT_UART_DM_RXFS(base)           ((base) + 0x50)
#define MSM_BOOT_UART_DM_RXFS_STATE_LSB(x)   MSM_BOOT_UART_DM_EXTR_BITS(x, 0, 6)
#define MSM_BOOT_UART_DM_RXFS_STATE_MSB(x)   \
        MSM_BOOT_UART_DM_EXTR_BITS(x, 14, 31)
#define MSM_BOOT_UART_DM_RXFS_BUF_STATE(x)   MSM_BOOT_UART_DM_EXTR_BITS(x, 7, 9)
#define MSM_BOOT_UART_DM_RXFS_ASYNC_STATE(x) \
        MSM_BOOT_UART_DM_EXTR_BITS(x, 10, 13)
 
/* Macros for Common Errors */
#define MSM_BOOT_UART_DM_E_SUCCESS           0
#define MSM_BOOT_UART_DM_E_FAILURE           1
#define MSM_BOOT_UART_DM_E_TIMEOUT           2
#define MSM_BOOT_UART_DM_E_INVAL             3
#define MSM_BOOT_UART_DM_E_MALLOC_FAIL       4
#define MSM_BOOT_UART_DM_E_RX_NOT_READY      5
 
void ipq40xx_uart_init(void);
 
#endif                          /* __UART_DM_H__ */