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serial: msm_geni_serial: Log UART RFR and IRQ enable status in IPC

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Add geni_ios changes to log RFR line status in GENI_IOS register.
Also set GENI FORCE_DEFAULT after performing TX/RX Abort Sequence.

Change-Id: I995e5cd864cd1f54dd295b82d887c8df3452e706
Signed-off-by: Chandana Kishori Chiluveru <cchiluve@codeaurora.org>
This commit is contained in:
Chandana Kishori Chiluveru 2021-03-02 19:09:33 +05:30 • committed by Gerrit - the friendly Code Review server
commit 01b9c27d1c
1 changed files with 56 additions and 3 deletions
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59
drivers/tty/serial/msm_geni_serial.c
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@ -30,6 +30,7 @@
/* UART specific GENI registers */
#define SE_UART_LOOPBACK_CFG (0x22C)
#define SE_GENI_CFG_REG80 (0x240)
#define SE_UART_TX_TRANS_CFG (0x25C)
#define SE_UART_TX_WORD_LEN (0x268)
#define SE_UART_TX_STOP_BIT_LEN (0x26C)
@ -258,6 +259,7 @@ static int msm_geni_serial_runtime_resume(struct device *dev);
static int msm_geni_serial_runtime_suspend(struct device *dev);
static int msm_geni_serial_get_ver_info(struct uart_port *uport);
static bool handle_rx_dma_xfer(u32 s_irq_status, struct uart_port *uport);
static void msm_geni_serial_allow_rx(struct msm_geni_serial_port *port);
static int uart_line_id;
#define GET_DEV_PORT(uport) \
@ -308,6 +310,7 @@ static void msm_geni_update_uart_error_code(struct msm_geni_serial_port *port,
static void msm_geni_serial_enable_interrupts(struct uart_port *uport)
{
unsigned int geni_m_irq_en, geni_s_irq_en;
unsigned int geni_dma_tx_irq_en, geni_dma_rx_irq_en;
struct msm_geni_serial_port *port = GET_DEV_PORT(uport);
geni_m_irq_en = geni_read_reg_nolog(uport->membase,
@ -326,12 +329,28 @@ static void msm_geni_serial_enable_interrupts(struct uart_port *uport)
geni_write_reg_nolog(DMA_RX_IRQ_BITS, uport->membase,
SE_DMA_RX_IRQ_EN_SET);
}
if (!uart_console(uport)) {
geni_m_irq_en = geni_read_reg_nolog(uport->membase,
SE_GENI_M_IRQ_EN);
geni_s_irq_en = geni_read_reg_nolog(uport->membase,
SE_GENI_S_IRQ_EN);
geni_dma_tx_irq_en = geni_read_reg_nolog(uport->membase,
SE_DMA_TX_IRQ_EN);
geni_dma_rx_irq_en = geni_read_reg_nolog(uport->membase,
SE_DMA_RX_IRQ_EN);
IPC_LOG_MSG(port->ipc_log_misc,
"%s: M_IRQ_EN:0x%x S_IRQ_EN:0x%x TX_IRQ_EN:0x%x RX_IRQ_EN:0x%x\n",
__func__, geni_m_irq_en, geni_s_irq_en,
geni_dma_tx_irq_en, geni_dma_rx_irq_en);
}
}
/* Try disabling interrupts in order to do polling in an atomic contexts. */
static bool msm_serial_try_disable_interrupts(struct uart_port *uport)
{
unsigned int geni_m_irq_en, geni_s_irq_en;
unsigned int geni_dma_tx_irq_en, geni_dma_rx_irq_en;
struct msm_geni_serial_port *port = GET_DEV_PORT(uport);
/*
@ -356,6 +375,21 @@ static bool msm_serial_try_disable_interrupts(struct uart_port *uport)
SE_DMA_RX_IRQ_EN_CLR);
}
if (!uart_console(uport)) {
geni_m_irq_en = geni_read_reg_nolog(uport->membase,
SE_GENI_M_IRQ_EN);
geni_s_irq_en = geni_read_reg_nolog(uport->membase,
SE_GENI_S_IRQ_EN);
geni_dma_tx_irq_en = geni_read_reg_nolog(uport->membase,
SE_DMA_TX_IRQ_EN);
geni_dma_rx_irq_en = geni_read_reg_nolog(uport->membase,
SE_DMA_RX_IRQ_EN);
IPC_LOG_MSG(port->ipc_log_misc,
"%s: M_IRQ_EN:0x%x S_IRQ_EN:0x%x TX_IRQ_EN:0x%x RX_IRQ_EN:0x%x\n",
__func__, geni_m_irq_en, geni_s_irq_en,
geni_dma_tx_irq_en, geni_dma_rx_irq_en);
}
return true;
}
@ -375,6 +409,8 @@ static bool geni_wait_for_cmd_done(struct uart_port *uport, bool is_irq_masked)
* We need to do polling if spinlock is taken
* by framework as we cannot rely on ISR.
*/
if (!uart_console(uport))
IPC_LOG_MSG(msm_port->ipc_log_misc, "%s polling:%d\n", __func__, is_irq_masked);
if (is_irq_masked) {
/*
* Polling is done for 1000 iterrations with
@ -1028,6 +1064,9 @@ static void msm_geni_serial_console_write(struct console *co, const char *s,
"%s: tx abort failed 0x%x\n", __func__,
geni_read_reg_nolog(uport->membase,
SE_GENI_STATUS));
msm_geni_serial_allow_rx(port);
geni_write_reg(FORCE_DEFAULT, uport->membase,
GENI_FORCE_DEFAULT_REG);
}
msm_geni_serial_enable_interrupts(uport);
@ -1181,6 +1220,9 @@ static int msm_geni_serial_prep_dma_tx(struct uart_port *uport)
SE_GENI_STATUS));
msm_geni_update_uart_error_code(msm_port, UART_ERROR_TX_ABORT_FAIL);
}
msm_geni_serial_allow_rx(msm_port);
geni_write_reg(FORCE_DEFAULT, uport->membase,
GENI_FORCE_DEFAULT_REG);
}
if (msm_port->xfer_mode == SE_DMA) {
@ -1328,6 +1370,9 @@ static void stop_tx_sequencer(struct uart_port *uport)
geni_read_reg_nolog(uport->membase, SE_GENI_STATUS));
msm_geni_update_uart_error_code(port, UART_ERROR_TX_ABORT_FAIL);
}
msm_geni_serial_allow_rx(port);
geni_write_reg(FORCE_DEFAULT, uport->membase,
GENI_FORCE_DEFAULT_REG);
}
if (port->xfer_mode == SE_DMA) {
@ -1608,6 +1653,9 @@ static int stop_rx_sequencer(struct uart_port *uport)
geni_se_dump_dbg_regs(&port->serial_rsc,
uport->membase, port->ipc_log_misc);
}
msm_geni_serial_allow_rx(port);
geni_write_reg(FORCE_DEFAULT, uport->membase,
GENI_FORCE_DEFAULT_REG);
if (port->xfer_mode == SE_DMA) {
port->s_cmd_done = false;
@ -2168,9 +2216,9 @@ static void msm_geni_serial_handle_isr(struct uart_port *uport,
if (m_irq_status || s_irq_status ||
dma_tx_status || dma_rx_status)
IPC_LOG_MSG(msm_port->ipc_log_irqstatus,
"%s: sirq:0x%x mirq:0x%x dma_txirq:0x%x dma_rxirq:0x%x\n",
"%s: sirq:0x%x mirq:0x%x dma_txirq:0x%x dma_rxirq:0x%x is_irq_masked:%d\n",
__func__, s_irq_status, m_irq_status,
dma_tx_status, dma_rx_status);
dma_tx_status, dma_rx_status, is_irq_masked);
m_cmd_done = handle_tx_dma_xfer(m_irq_status, uport);
s_cmd_done = handle_rx_dma_xfer(s_irq_status, uport);
}
@ -2351,6 +2399,8 @@ static int msm_geni_serial_port_setup(struct uart_port *uport)
SE_GENI_RX_PACKING_CFG0);
geni_write_reg_nolog(cfg1, uport->membase,
SE_GENI_RX_PACKING_CFG1);
geni_write_reg_nolog(0x431c, uport->membase,
SE_GENI_CFG_REG80);
if (!msm_port->rx_fifo) {
ret = -ENOMEM;
goto exit_portsetup;
@ -2618,7 +2668,10 @@ static void msm_geni_serial_set_termios(struct uart_port *uport,
}
if (!uart_console(uport)) {
int ret = msm_geni_serial_power_on(uport);
int ret;
IPC_LOG_MSG(port->ipc_log_misc, "%s: start\n", __func__);
ret = msm_geni_serial_power_on(uport);
if (ret) {
IPC_LOG_MSG(port->ipc_log_misc,