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drivers: serial: ns16550: Remove DLF & PCP instance count assumptions

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Take advantage of DT_INST_FOREACH_STATUS_OKAY() to look for DLF and
PCP properties on any matching nodes with "okay" status.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Johan Hedberg 2020-12-19 17:57:07 +02:00 • committed by Anas Nashif
commit 0cb118968d
1 changed files with 11 additions and 22 deletions
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33
drivers/serial/uart_ns16550.c
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@ -38,24 +38,13 @@
#include "uart_ns16550.h"
/*
* If PCP is set for any of the ports, enable support.
* Ditto for DLF and PCI(e).
*/
#define INST_HAS_PCP_HELPER(inst) DT_INST_NODE_HAS_PROP(inst, pcp) ||
#define INST_HAS_DLF_HELPER(inst) DT_INST_NODE_HAS_PROP(inst, dlf) ||
#if DT_INST_NODE_HAS_PROP(0, pcp) || \
DT_INST_NODE_HAS_PROP(1, pcp) || \
DT_INST_NODE_HAS_PROP(2, pcp) || \
DT_INST_NODE_HAS_PROP(3, pcp)
#define UART_NS16550_PCP_ENABLED
#endif
#if DT_INST_NODE_HAS_PROP(0, dlf) || \
DT_INST_NODE_HAS_PROP(1, dlf) || \
DT_INST_NODE_HAS_PROP(2, dlf) || \
DT_INST_NODE_HAS_PROP(3, dlf)
#define UART_NS16550_DLF_ENABLED
#endif
#define UART_NS16550_PCP_ENABLED \
(DT_INST_FOREACH_STATUS_OKAY(INST_HAS_PCP_HELPER) 0)
#define UART_NS16550_DLF_ENABLED \
(DT_INST_FOREACH_STATUS_OKAY(INST_HAS_DLF_HELPER) 0)
#if DT_ANY_INST_ON_BUS_STATUS_OKAY(pcie)
BUILD_ASSERT(IS_ENABLED(CONFIG_PCIE), "NS16550(s) in DT need CONFIG_PCIE");
@ -261,7 +250,7 @@ struct uart_ns16550_device_config {
#if defined(CONFIG_UART_INTERRUPT_DRIVEN) || defined(CONFIG_UART_ASYNC_API)
uart_irq_config_func_t irq_config_func;
#endif
#ifdef UART_NS16550_PCP_ENABLED
#if UART_NS16550_PCP_ENABLED
uint32_t pcp;
#endif
#if DT_ANY_INST_ON_BUS_STATUS_OKAY(pcie)
@ -285,7 +274,7 @@ struct uart_ns16550_dev_data_t {
void *cb_data; /**< Callback function arg */
#endif
#ifdef UART_NS16550_DLF_ENABLED
#if UART_NS16550_DLF_ENABLED
uint8_t dlf; /**< DLF value */
#endif
};
@ -372,11 +361,11 @@ static int uart_ns16550_configure(const struct device *dev,
dev_data->iir_cache = 0U;
#endif
#ifdef UART_NS16550_DLF_ENABLED
#if UART_NS16550_DLF_ENABLED
OUTBYTE(DLF(dev), dev_data->dlf);
#endif
#ifdef UART_NS16550_PCP_ENABLED
#if UART_NS16550_PCP_ENABLED
uint32_t pcp = dev_cfg->pcp;
if (pcp) {
@ -919,7 +908,7 @@ static int uart_ns16550_line_ctrl_set(const struct device *dev,
static int uart_ns16550_drv_cmd(const struct device *dev, uint32_t cmd,
uint32_t p)
{
#ifdef UART_NS16550_DLF_ENABLED
#if UART_NS16550_DLF_ENABLED
if (cmd == CMD_SET_DLF) {
struct uart_ns16550_dev_data_t * const dev_data = DEV_DATA(dev);
k_spinlock_key_t key = k_spin_lock(&dev_data->lock);