| Message ID | 20090515001855.11164yyhzqzya58g@lidskialf.net (mailing list archive) |
|---|---|
| State | Superseded, archived |
| Headers | show |
* Andrew de Quincey <adq_dvb@lidskialf.net> [090514 16:19]: > Quoting Tony Lindgren <tony@atomide.com>: > >> * Felipe Balbi <felipe.balbi@nokia.com> [090514 01:15]: >>> On Thu, May 14, 2009 at 03:44:14AM +0200, ext Tony Lindgren wrote: >>> > * Felipe Balbi <felipe.balbi@nokia.com> [090513 17:33]: >>> > > On Thu, May 14, 2009 at 01:46:51AM +0200, ext Andrew de Quincey wrote: >>> > > > Hi, I've just discovered that the patch at: >>> > > > >>> > > > >>> http://git.kernel.org/?p=linux/kernel/git/tmlind/linux-omap-2.6.git;a=commitdiff;h=3eae3ea7c443fc4330574dffea65b6f2f53a2574 >>> > > > >>> > > > Breaks the nokia770's framebuffer as it removes the platform data for >>> > > > the HWA742 LCD controller. >>> > > > >>> > > > As the patch says "Patches against the mainline tree are welcome to >>> > > > add back the missing functionality if needed!", I'm happy to do this. >>> > > > >>> > > > However, since I'm fairly new to the linux-omap project, is simply >>> > > > extracting the removed nokia770 code and generating a patch against >>> > > > the mainline kernel sufficient? or is there a newer style of some sort >>> > > > that should be adopted for this? >>> > > >>> > > You can start by generating the new patch against mainline and running >>> > > scripts/checkpatch.pl, then you should probably find out if there are >>> > > any API changes and stuff like that. Then send the patch to lkml ccing >>> > > linux-omap and let's see what comments do you get from those guys :-) >>> > >>> > Please change the code to pass the struct clock to >>> drivers/video/omap/hwa742.c >>> > in hwa742_platform_data. The hw742.c can just do standard >>> clk_enable/disable >>> > there. Otherwise we won't be able to get this missing part to the mainline >>> > kernel. >>> >>> how about clkdev then ? are we gonna support that for omap1 still ? >> >> Yeah the clkdev is there, but in the case of the LCD the clock can be >> any clock, so we cannot set just one "fck" for all the omap1 LCD panels. >> >> In this case the "bclk" is used for the LCD, but "bclk" could be used >> for other devices as well, not just LCD. > > Hi, is the attached patch the sort of thing you had in mind? This is > against linux-omap-2.6, latest git. Hey, that's pretty cool! Just one comment below. > Unfortunately, both mainline linux-2.6 and linux-omap-2.6 gits lock up > on bootup before the LCD is initialised. However, the linux-omap 2.6.29 > that is compiled by openembedded still boots ok, and with the attached > patch applied, the LCD works again! OK, good to hear. Need to debug that then. > I guess my next task is to figure out why the mainline kernels freeze; > I've seen that before, and it seemed to be something to do with changes > to the mcbsp support. OK > Reinstate HWA742 platform data for nokia 770 platform. > > Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net> > > diff --git a/arch/arm/mach-omap1/board-nokia770.c b/arch/arm/mach-omap1/board-nokia770.c > index 8780ca6..df5f38b 100644 > --- a/arch/arm/mach-omap1/board-nokia770.c > +++ b/arch/arm/mach-omap1/board-nokia770.c > @@ -33,6 +33,7 @@ > #include <mach/common.h> > #include <mach/dsp_common.h> > #include <mach/omapfb.h> > +#include <mach/hwa742.h> > #include <mach/lcd_mipid.h> > #include <mach/mmc.h> > #include <mach/usb.h> > @@ -163,6 +164,26 @@ static struct spi_board_info nokia770_spi_board_info[] __initdata = { > }, > }; > > +static struct hwa742_platform_data nokia770_hwa742_platform_data = { > + .sys_ck = NULL, > + .te_connected = 1, > +}; > + > +static int hwa742_get_clocks(void) > +{ > + nokia770_hwa742_platform_data.sys_ck = clk_get(NULL, "bclk"); > + if (IS_ERR(nokia770_hwa742_platform_data.sys_ck)) { > + printk(KERN_ERR "can't get HWA742 clock\n"); > + return PTR_ERR(nokia770_hwa742_platform_data.sys_ck); > + } > + return 0; > +} > + > +static void hwa742_dev_init(void) > +{ > + hwa742_get_clocks(); > + omapfb_set_ctrl_platform_data(&nokia770_hwa742_platform_data); > +} You can now get rid of the hwa742_get_clocks(), and move that code to hwa742_dev_init() instead. Regards, Tony > /* assume no Mini-AB port */ > > @@ -371,6 +392,7 @@ static void __init omap_nokia770_init(void) > omap_serial_init(); > omap_register_i2c_bus(1, 100, NULL, 0); > omap_dsp_init(); > + hwa742_dev_init(); > ads7846_dev_init(); > mipid_dev_init(); > omap_usb_init(&nokia770_usb_config); > diff --git a/arch/arm/plat-omap/include/mach/hwa742.h b/arch/arm/plat-omap/include/mach/hwa742.h > index 577f492..c00e05d 100644 > --- a/arch/arm/plat-omap/include/mach/hwa742.h > +++ b/arch/arm/plat-omap/include/mach/hwa742.h > @@ -2,10 +2,7 @@ > #define _HWA742_H > > struct hwa742_platform_data { > - void (*power_up)(struct device *dev); > - void (*power_down)(struct device *dev); > - unsigned long (*get_clock_rate)(struct device *dev); > - > + struct clk *sys_ck; > unsigned te_connected:1; > }; > > diff --git a/drivers/video/omap/hwa742.c b/drivers/video/omap/hwa742.c > index 8aa6e47..1230476 100644 > --- a/drivers/video/omap/hwa742.c > +++ b/drivers/video/omap/hwa742.c > @@ -133,8 +133,7 @@ struct { > struct lcd_ctrl_extif *extif; > struct lcd_ctrl *int_ctrl; > > - void (*power_up)(struct device *dev); > - void (*power_down)(struct device *dev); > + struct clk *sys_ck; > } hwa742; > > struct lcd_ctrl hwa742_ctrl; > @@ -915,14 +914,13 @@ static void hwa742_suspend(void) > hwa742_set_update_mode(OMAPFB_UPDATE_DISABLED); > /* Enable sleep mode */ > hwa742_write_reg(HWA742_POWER_SAVE, 1 << 1); > - if (hwa742.power_down != NULL) > - hwa742.power_down(hwa742.fbdev->dev); > + clk_disable(hwa742.sys_ck); > } > > static void hwa742_resume(void) > { > - if (hwa742.power_up != NULL) > - hwa742.power_up(hwa742.fbdev->dev); > + clk_enable(hwa742.sys_ck); > + > /* Disable sleep mode */ > hwa742_write_reg(HWA742_POWER_SAVE, 0); > while (1) { > @@ -955,14 +953,13 @@ static int hwa742_init(struct omapfb_device *fbdev, int ext_mode, > omapfb_conf = fbdev->dev->platform_data; > ctrl_conf = omapfb_conf->ctrl_platform_data; > > - if (ctrl_conf == NULL || ctrl_conf->get_clock_rate == NULL) { > + if (ctrl_conf == NULL || ctrl_conf->sys_ck == NULL) { > dev_err(fbdev->dev, "HWA742: missing platform data\n"); > r = -ENOENT; > goto err1; > } > > - hwa742.power_down = ctrl_conf->power_down; > - hwa742.power_up = ctrl_conf->power_up; > + hwa742.sys_ck = ctrl_conf->sys_ck; > > spin_lock_init(&hwa742.req_lock); > > @@ -972,12 +969,11 @@ static int hwa742_init(struct omapfb_device *fbdev, int ext_mode, > if ((r = hwa742.extif->init(fbdev)) < 0) > goto err2; > > - ext_clk = ctrl_conf->get_clock_rate(fbdev->dev); > + ext_clk = clk_get_rate(hwa742.sys_ck); > if ((r = calc_extif_timings(ext_clk, &extif_mem_div)) < 0) > goto err3; > hwa742.extif->set_timings(&hwa742.reg_timings); > - if (hwa742.power_up != NULL) > - hwa742.power_up(fbdev->dev); > + clk_enable(hwa742.sys_ck); > > calc_hwa742_clk_rates(ext_clk, &sys_clk, &pix_clk); > if ((r = calc_extif_timings(sys_clk, &extif_mem_div)) < 0) > @@ -1040,8 +1036,7 @@ static int hwa742_init(struct omapfb_device *fbdev, int ext_mode, > > return 0; > err4: > - if (hwa742.power_down != NULL) > - hwa742.power_down(fbdev->dev); > + clk_disable(hwa742.sys_ck); > err3: > hwa742.extif->cleanup(); > err2: > @@ -1055,8 +1050,7 @@ static void hwa742_cleanup(void) > hwa742_set_update_mode(OMAPFB_UPDATE_DISABLED); > hwa742.extif->cleanup(); > hwa742.int_ctrl->cleanup(); > - if (hwa742.power_down != NULL) > - hwa742.power_down(hwa742.fbdev->dev); > + clk_disable(hwa742.sys_ck); > } > > struct lcd_ctrl hwa742_ctrl = { -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Reinstate HWA742 platform data for nokia 770 platform. Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net> diff --git a/arch/arm/mach-omap1/board-nokia770.c b/arch/arm/mach-omap1/board-nokia770.c index 8780ca6..df5f38b 100644 --- a/arch/arm/mach-omap1/board-nokia770.c +++ b/arch/arm/mach-omap1/board-nokia770.c @@ -33,6 +33,7 @@ #include <mach/common.h> #include <mach/dsp_common.h> #include <mach/omapfb.h> +#include <mach/hwa742.h> #include <mach/lcd_mipid.h> #include <mach/mmc.h> #include <mach/usb.h> @@ -163,6 +164,26 @@ static struct spi_board_info nokia770_spi_board_info[] __initdata = { }, }; +static struct hwa742_platform_data nokia770_hwa742_platform_data = { + .sys_ck = NULL, + .te_connected = 1, +}; + +static int hwa742_get_clocks(void) +{ + nokia770_hwa742_platform_data.sys_ck = clk_get(NULL, "bclk"); + if (IS_ERR(nokia770_hwa742_platform_data.sys_ck)) { + printk(KERN_ERR "can't get HWA742 clock\n"); + return PTR_ERR(nokia770_hwa742_platform_data.sys_ck); + } + return 0; +} + +static void hwa742_dev_init(void) +{ + hwa742_get_clocks(); + omapfb_set_ctrl_platform_data(&nokia770_hwa742_platform_data); +} /* assume no Mini-AB port */ @@ -371,6 +392,7 @@ static void __init omap_nokia770_init(void) omap_serial_init(); omap_register_i2c_bus(1, 100, NULL, 0); omap_dsp_init(); + hwa742_dev_init(); ads7846_dev_init(); mipid_dev_init(); omap_usb_init(&nokia770_usb_config); diff --git a/arch/arm/plat-omap/include/mach/hwa742.h b/arch/arm/plat-omap/include/mach/hwa742.h index 577f492..c00e05d 100644 --- a/arch/arm/plat-omap/include/mach/hwa742.h +++ b/arch/arm/plat-omap/include/mach/hwa742.h @@ -2,10 +2,7 @@ #define _HWA742_H struct hwa742_platform_data { - void (*power_up)(struct device *dev); - void (*power_down)(struct device *dev); - unsigned long (*get_clock_rate)(struct device *dev); - + struct clk *sys_ck; unsigned te_connected:1; }; diff --git a/drivers/video/omap/hwa742.c b/drivers/video/omap/hwa742.c index 8aa6e47..1230476 100644 --- a/drivers/video/omap/hwa742.c +++ b/drivers/video/omap/hwa742.c @@ -133,8 +133,7 @@ struct { struct lcd_ctrl_extif *extif; struct lcd_ctrl *int_ctrl; - void (*power_up)(struct device *dev); - void (*power_down)(struct device *dev); + struct clk *sys_ck; } hwa742; struct lcd_ctrl hwa742_ctrl; @@ -915,14 +914,13 @@ static void hwa742_suspend(void) hwa742_set_update_mode(OMAPFB_UPDATE_DISABLED); /* Enable sleep mode */ hwa742_write_reg(HWA742_POWER_SAVE, 1 << 1); - if (hwa742.power_down != NULL) - hwa742.power_down(hwa742.fbdev->dev); + clk_disable(hwa742.sys_ck); } static void hwa742_resume(void) { - if (hwa742.power_up != NULL) - hwa742.power_up(hwa742.fbdev->dev); + clk_enable(hwa742.sys_ck); + /* Disable sleep mode */ hwa742_write_reg(HWA742_POWER_SAVE, 0); while (1) { @@ -955,14 +953,13 @@ static int hwa742_init(struct omapfb_device *fbdev, int ext_mode, omapfb_conf = fbdev->dev->platform_data; ctrl_conf = omapfb_conf->ctrl_platform_data; - if (ctrl_conf == NULL || ctrl_conf->get_clock_rate == NULL) { + if (ctrl_conf == NULL || ctrl_conf->sys_ck == NULL) { dev_err(fbdev->dev, "HWA742: missing platform data\n"); r = -ENOENT; goto err1; } - hwa742.power_down = ctrl_conf->power_down; - hwa742.power_up = ctrl_conf->power_up; + hwa742.sys_ck = ctrl_conf->sys_ck; spin_lock_init(&hwa742.req_lock); @@ -972,12 +969,11 @@ static int hwa742_init(struct omapfb_device *fbdev, int ext_mode, if ((r = hwa742.extif->init(fbdev)) < 0) goto err2; - ext_clk = ctrl_conf->get_clock_rate(fbdev->dev); + ext_clk = clk_get_rate(hwa742.sys_ck); if ((r = calc_extif_timings(ext_clk, &extif_mem_div)) < 0) goto err3; hwa742.extif->set_timings(&hwa742.reg_timings); - if (hwa742.power_up != NULL) - hwa742.power_up(fbdev->dev); + clk_enable(hwa742.sys_ck); calc_hwa742_clk_rates(ext_clk, &sys_clk, &pix_clk); if ((r = calc_extif_timings(sys_clk, &extif_mem_div)) < 0) @@ -1040,8 +1036,7 @@ static int hwa742_init(struct omapfb_device *fbdev, int ext_mode, return 0; err4: - if (hwa742.power_down != NULL) - hwa742.power_down(fbdev->dev); + clk_disable(hwa742.sys_ck); err3: hwa742.extif->cleanup(); err2: @@ -1055,8 +1050,7 @@ static void hwa742_cleanup(void) hwa742_set_update_mode(OMAPFB_UPDATE_DISABLED); hwa742.extif->cleanup(); hwa742.int_ctrl->cleanup(); - if (hwa742.power_down != NULL) - hwa742.power_down(hwa742.fbdev->dev); + clk_disable(hwa742.sys_ck); } struct lcd_ctrl hwa742_ctrl = {