[PATCH v2 14/18] serial: intel: Add CCF support
From: Songjun Wu <hidden>
Date: 2018-08-03 03:04:30
Also in:
linux-clk, linux-devicetree, linux-mips, lkml
Subsystem:
the rest, tty layer and serial drivers · Maintainers:
Linus Torvalds, Greg Kroah-Hartman, Jiri Slaby
Previous implementation uses platform-dependent API to get the clock. Those functions are not available for other SoC which uses the same IP. The CCF (Common Clock Framework) have an abstraction based APIs for clock. In future, the platform specific code will be removed when the legacy soc use CCF as well. Change to use CCF APIs to get clock and rate. So that different SoCs can use the same driver. Signed-off-by: Songjun Wu <redacted> --- Changes in v2: None drivers/tty/serial/lantiq.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/drivers/tty/serial/lantiq.c b/drivers/tty/serial/lantiq.c
index 36479d66fb7c..35518ab3a80d 100644
--- a/drivers/tty/serial/lantiq.c
+++ b/drivers/tty/serial/lantiq.c@@ -26,7 +26,9 @@ #include <linux/clk.h> #include <linux/gpio.h> +#ifdef CONFIG_LANTIQ #include <lantiq_soc.h> +#endif #define PORT_LTQ_ASC 111 #define MAXPORTS 2
@@ -744,14 +746,23 @@ lqasc_probe(struct platform_device *pdev) port->irq = irqres[0].start; port->mapbase = mmres->start; +#if (IS_ENABLED(CONFIG_LANTIQ) && !IS_ENABLED(CONFIG_COMMON_CLK)) ltq_port->freqclk = clk_get_fpi(); +#else + ltq_port->freqclk = devm_clk_get(&pdev->dev, "freq"); +#endif + if (IS_ERR(ltq_port->freqclk)) { pr_err("failed to get fpi clk\n"); return -ENOENT; } /* not all asc ports have clock gates, lets ignore the return code */ +#if (IS_ENABLED(CONFIG_LANTIQ) && !IS_ENABLED(CONFIG_COMMON_CLK)) ltq_port->clk = clk_get(&pdev->dev, NULL); +#else + ltq_port->clk = devm_clk_get(&pdev->dev, "asc"); +#endif ltq_port->tx_irq = irqres[0].start; ltq_port->rx_irq = irqres[1].start;
--
2.11.0