| Message ID | 1363690369-8067-1-git-send-email-maxime.ripard@free-electrons.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Tue, Mar 19, 2013 at 11:52:49AM +0100, Maxime Ripard wrote: > From: Emilio López <emilio@elopez.com.ar> > > This commit implements support for using the clk api; this lets us use > the "clocks" property with device tree, instead of having to use > clock-frequency. > > Signed-off-by: Emilio López <emilio@elopez.com.ar> FWIW, Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Hi Greg, Le 21/03/2013 09:47, Heikki Krogerus a écrit : > On Tue, Mar 19, 2013 at 11:52:49AM +0100, Maxime Ripard wrote: >> From: Emilio López <emilio@elopez.com.ar> >> >> This commit implements support for using the clk api; this lets us use >> the "clocks" property with device tree, instead of having to use >> clock-frequency. >> >> Signed-off-by: Emilio López <emilio@elopez.com.ar> > > FWIW, > > Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Would you consider merging this patch, or do you have additional comments? We have several patch series that depends on this one that I'd like to see included in 3.10, and we begin to see the end of the 3.9 release cycle. Thanks, Maxime
On Tue, Mar 26, 2013 at 11:35:18AM +0100, Maxime Ripard wrote: > Hi Greg, > > Le 21/03/2013 09:47, Heikki Krogerus a écrit : > > On Tue, Mar 19, 2013 at 11:52:49AM +0100, Maxime Ripard wrote: > >> From: Emilio López <emilio@elopez.com.ar> > >> > >> This commit implements support for using the clk api; this lets us use > >> the "clocks" property with device tree, instead of having to use > >> clock-frequency. > >> > >> Signed-off-by: Emilio López <emilio@elopez.com.ar> > > > > FWIW, > > > > Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> > > Would you consider merging this patch, or do you have additional comments? > > We have several patch series that depends on this one that I'd like to > see included in 3.10, and we begin to see the end of the 3.9 release cycle. You resent one patch, in the middle of a 7 patch series, with me on the cc: and somehow expected me to know that I was supposed to apply it? Please be specific and realistic with your requests. Resend it if you feel I should apply it. greg k-h
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index db0e66f..3dedd24 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -26,6 +26,7 @@ #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/acpi.h> +#include <linux/clk.h> #include "8250.h" @@ -55,8 +56,9 @@ struct dw8250_data { - int last_lcr; - int line; + int last_lcr; + int line; + struct clk *clk; }; static void dw8250_serial_out(struct uart_port *p, int offset, int value) @@ -136,8 +138,13 @@ static int dw8250_probe_of(struct uart_port *p) if (!of_property_read_u32(np, "reg-shift", &val)) p->regshift = val; + /* clock got configured through clk api, all done */ + if (p->uartclk) + return 0; + + /* try to find out clock frequency from DT as fallback */ if (of_property_read_u32(np, "clock-frequency", &val)) { - dev_err(p->dev, "no clock-frequency property set\n"); + dev_err(p->dev, "clk or clock-frequency not defined\n"); return -EINVAL; } p->uartclk = val; @@ -294,9 +301,20 @@ static int dw8250_probe(struct platform_device *pdev) if (!uart.port.membase) return -ENOMEM; + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->clk = devm_clk_get(&pdev->dev, NULL); + if (!IS_ERR(data->clk)) { + clk_prepare_enable(data->clk); + uart.port.uartclk = clk_get_rate(data->clk); + } + uart.port.iotype = UPIO_MEM; uart.port.serial_in = dw8250_serial_in; uart.port.serial_out = dw8250_serial_out; + uart.port.private_data = data; dw8250_setup_port(&uart); @@ -312,12 +330,6 @@ static int dw8250_probe(struct platform_device *pdev) return -ENODEV; } - data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); - if (!data) - return -ENOMEM; - - uart.port.private_data = data; - data->line = serial8250_register_8250_port(&uart); if (data->line < 0) return data->line; @@ -333,6 +345,9 @@ static int dw8250_remove(struct platform_device *pdev) serial8250_unregister_port(data->line); + if (!IS_ERR(data->clk)) + clk_disable_unprepare(data->clk); + return 0; }