serial: Refactor mcux lpuart shim driver to use clock control interface
Refactors the mcux lpuart shim driver to use the clock control interface instead of calling CLOCK_GetFreq() directly. This will allow SoCs with different clock architectures to reuse this driver. Signed-off-by: Maureen Helm <maureen.helm@nxp.com>
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parent
e042e249b1
commit
17a6d29f67
2 changed files with 17 additions and 5 deletions
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@ -7,7 +7,7 @@
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menuconfig UART_MCUX_LPUART
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bool "MCUX LPUART driver"
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depends on HAS_MCUX_LPUART
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depends on HAS_MCUX_LPUART && CLOCK_CONTROL
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default n
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select SERIAL_HAS_DRIVER
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select SERIAL_SUPPORT_INTERRUPT
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@ -7,13 +7,14 @@
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#include <errno.h>
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#include <device.h>
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#include <uart.h>
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#include <clock_control.h>
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#include <fsl_lpuart.h>
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#include <fsl_clock.h>
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#include <soc.h>
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struct mcux_lpuart_config {
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LPUART_Type *base;
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clock_name_t clock_source;
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char *clock_name;
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clock_control_subsys_t clock_subsys;
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u32_t baud_rate;
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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void (*irq_config_func)(struct device *dev);
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@ -231,9 +232,18 @@ static int mcux_lpuart_init(struct device *dev)
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{
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const struct mcux_lpuart_config *config = dev->config->config_info;
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lpuart_config_t uart_config;
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struct device *clock_dev;
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u32_t clock_freq;
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clock_freq = CLOCK_GetFreq(config->clock_source);
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clock_dev = device_get_binding(config->clock_name);
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if (clock_dev == NULL) {
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return -EINVAL;
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}
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if (clock_control_get_rate(clock_dev, config->clock_subsys,
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&clock_freq)) {
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return -EINVAL;
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}
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LPUART_GetDefaultConfig(&uart_config);
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uart_config.enableTx = true;
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@ -279,7 +289,9 @@ static void mcux_lpuart_config_func_0(struct device *dev);
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static const struct mcux_lpuart_config mcux_lpuart_0_config = {
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.base = LPUART0,
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.clock_source = LPUART0_CLK_SRC,
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.clock_name = CONFIG_UART_MCUX_LPUART_0_CLOCK_NAME,
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.clock_subsys =
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(clock_control_subsys_t)CONFIG_UART_MCUX_LPUART_0_CLOCK_SUBSYS,
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.baud_rate = CONFIG_UART_MCUX_LPUART_0_BAUD_RATE,
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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.irq_config_func = mcux_lpuart_config_func_0,
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