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drivers: serial: ns16550: Remove reg-shift instance count assumption

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The reg-shift support was quite broken in that the code only looked
for this property on instance 0. Now we support the property on any
node which might declare it.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Johan Hedberg 2020-12-19 18:36:43 +02:00 • committed by Anas Nashif
commit 048dcea54b
2 changed files with 43 additions and 23 deletions
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62
drivers/serial/uart_ns16550.c
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@ -40,11 +40,15 @@
#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) ||
#define INST_HAS_REG_SHIFT_HELPER(inst) \
DT_INST_NODE_HAS_PROP(inst, reg_shift) ||
#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)
#define UART_NS16550_REG_INTERVAL_ENABLED \
(DT_INST_FOREACH_STATUS_OKAY(INST_HAS_REG_SHIFT_HELPER) 0)
#if DT_ANY_INST_ON_BUS_STATUS_OKAY(pcie)
BUILD_ASSERT(IS_ENABLED(CONFIG_PCIE), "NS16550(s) in DT need CONFIG_PCIE");
@ -192,44 +196,32 @@ BUILD_ASSERT(IS_ENABLED(CONFIG_PCIE), "NS16550(s) in DT need CONFIG_PCIE");
#define DEV_DATA(dev) \
((struct uart_ns16550_dev_data_t *)(dev)->data)
#define THR(dev) (get_port(dev) + REG_THR * UART_REG_ADDR_INTERVAL)
#define RDR(dev) (get_port(dev) + REG_RDR * UART_REG_ADDR_INTERVAL)
#define BRDL(dev) \
(get_port(dev) + REG_BRDL * UART_REG_ADDR_INTERVAL)
#define BRDH(dev) \
(get_port(dev) + REG_BRDH * UART_REG_ADDR_INTERVAL)
#define IER(dev) (get_port(dev) + REG_IER * UART_REG_ADDR_INTERVAL)
#define IIR(dev) (get_port(dev) + REG_IIR * UART_REG_ADDR_INTERVAL)
#define FCR(dev) (get_port(dev) + REG_FCR * UART_REG_ADDR_INTERVAL)
#define LCR(dev) (get_port(dev) + REG_LCR * UART_REG_ADDR_INTERVAL)
#define MDC(dev) (get_port(dev) + REG_MDC * UART_REG_ADDR_INTERVAL)
#define LSR(dev) (get_port(dev) + REG_LSR * UART_REG_ADDR_INTERVAL)
#define MSR(dev) (get_port(dev) + REG_MSR * UART_REG_ADDR_INTERVAL)
#define THR(dev) (get_port(dev) + REG_THR * reg_interval(dev))
#define RDR(dev) (get_port(dev) + REG_RDR * reg_interval(dev))
#define BRDL(dev) (get_port(dev) + REG_BRDL * reg_interval(dev))
#define BRDH(dev) (get_port(dev) + REG_BRDH * reg_interval(dev))
#define IER(dev) (get_port(dev) + REG_IER * reg_interval(dev))
#define IIR(dev) (get_port(dev) + REG_IIR * reg_interval(dev))
#define FCR(dev) (get_port(dev) + REG_FCR * reg_interval(dev))
#define LCR(dev) (get_port(dev) + REG_LCR * reg_interval(dev))
#define MDC(dev) (get_port(dev) + REG_MDC * reg_interval(dev))
#define LSR(dev) (get_port(dev) + REG_LSR * reg_interval(dev))
#define MSR(dev) (get_port(dev) + REG_MSR * reg_interval(dev))
#define DLF(dev) (get_port(dev) + REG_DLF)
#define PCP(dev) (get_port(dev) + REG_PCP)
#define IIRC(dev) (DEV_DATA(dev)->iir_cache)
#if DT_INST_NODE_HAS_PROP(0, reg_shift)
#define UART_REG_ADDR_INTERVAL (1<<DT_INST_PROP(0, reg_shift))
#endif
#ifdef UART_NS16550_ACCESS_IOPORT
#define INBYTE(x) sys_in8(x)
#define INWORD(x) sys_in32(x)
#define OUTBYTE(x, d) sys_out8(d, x)
#define OUTWORD(x, d) sys_out32(d, x)
#ifndef UART_REG_ADDR_INTERVAL
#define UART_REG_ADDR_INTERVAL 1 /* address diff of adjacent regs. */
#endif /* UART_REG_ADDR_INTERVAL */
#else
#define INBYTE(x) sys_read8(x)
#define INWORD(x) sys_read32(x)
#define OUTBYTE(x, d) sys_write8(d, x)
#define OUTWORD(x, d) sys_write32(d, x)
#ifndef UART_REG_ADDR_INTERVAL
#define UART_REG_ADDR_INTERVAL 4 /* address diff of adjacent regs. */
#endif
#endif /* UART_NS16550_ACCESS_IOPORT */
#ifdef CONFIG_UART_NS16550_ACCESS_WORD_ONLY
@ -253,6 +245,9 @@ struct uart_ns16550_device_config {
#if UART_NS16550_PCP_ENABLED
uint32_t pcp;
#endif
#if UART_NS16550_REG_INTERVAL_ENABLED
uint8_t reg_interval;
#endif
#if DT_ANY_INST_ON_BUS_STATUS_OKAY(pcie)
bool pcie;
pcie_bdf_t pcie_bdf;
@ -279,6 +274,27 @@ struct uart_ns16550_dev_data_t {
#endif
};
#if defined(UART_REG_ADDR_INTERVAL)
#define DEFAULT_REG_INTERVAL UART_REG_ADDR_INTERVAL
#elif defined(UART_NS16550_ACCESS_IOPORT)
#define DEFAULT_REG_INTERVAL 1
#else
#define DEFAULT_REG_INTERVAL 4
#endif
#if UART_NS16550_REG_INTERVAL_ENABLED
static inline uint8_t reg_interval(const struct device *dev)
{
if (DEV_CFG(dev)->reg_interval) {
return DEV_CFG(dev)->reg_interval;
}
return DEFAULT_REG_INTERVAL;
}
#else
#define reg_interval(dev) DEFAULT_REG_INTERVAL
#endif
static const struct uart_driver_api uart_ns16550_driver_api;
static inline uintptr_t get_port(const struct device *dev)