Hi Arnd, First of all, thanks for your great effort on making Exynos multiplatform- friendly. I have added my two cents inline. On Tuesday 05 of March 2013 18:42:10 Arnd Bergmann wrote: > Hi everyone, > > Although I'm not present at the Linaro Connect hacking > sessions, I am participating remotely and have tried > hacking on multiplatform support for Exynos. This patch > set is far from complete, but I think the patches > can be useful anyway. > > The series gets increasingly fishy towards the end, > and we should probably not apply any of the last nine > patches as-is, nor do I expect everything to work, since > I have not tested them at all. > > With this patch set, we can build mach-exynos as part > of a multiplatform kernel, with the following caveats: > > * Only DT based boards are supported As far as I'm aware, there are plans to drop non-DT Exynos support. Kgene should know more on this. > * Moving to common-clk breaks things including cpufreq > and others. Thomas is working on a patch for this We have several patches internally for fixing things up to run correclty with common-clk. I'll see if we can post some patches. > * We disable the gpio implementation, which also breaks > stuff, but Thomas has a patch already The legacy GPIO code is needed only for non-DT case. DT-case uses the new pinctrl-samsung driver, which is (AFAIK) multiplatform-aware. > * Using the generic DMA engine API in SPI and ASoC > means they no longer work on S3C > * I did not like the solution for the UART driver, but > could also not think of a better one. > * The FB_S3C, S3C2410_WATCHDOG and S3C_ADC drivers > are left as an exercise to the reader, they are > currently disabled with multiplatform > * sparsemem support is not available on multiplatform There was some discussion some time ago whether we really need sparsemem on Exynos. If I remember correctly, it turned out that we don't. So this is not really an issue. > The patches are based on v3.9-rc1 and I have pushed > the git branch to > > git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc.git > testing/exynos-multiplatform > > I have not yet added subsystem maintainers to Cc on the > patches, I'd like to coordinate with the other people > involved first, so see if they already have patches > for the same drivers. > > Arnd > > Arnd Bergmann (23): > ARM: exynos: introduce EXYNOS_ATAGS symbol > irqchip: exynos: remove dependency on mach/irqs.h > tty: serial/samsung: prepare for common clock API > tty: serial/samsung: make register definitions global > tty: serial/samsung: fix modular build > ARM: exynos: move debug-macro.S to include/debug/ > i2c: s3c2410: make header file local > mmc: sdhci-s3c: remove platform dependencies > usb: exynos: do not include plat/usb-phy.h > [media] exynos: remove unnecessary header inclusions > video/exynos: remove unnecessary header inclusions > thermal/exynos: remove unnecessary header inclusions > mtd: onenand/samsung: make regs-onenand.h file local > rtc: s3c: make header file local > spi: s3c64xx: move to generic dmaengine API > pwm: samsung: repair the worst MMIO abuses I'm currently working (in my free time) on a series of cleanup patches sanitizing Samsung PWM code for S3C64xx and S5PV210 DT (and multiplatform) support. On those platforms it is a bit more complex case as there are two blocks of code that access the same hardware - samsung-time (using two PWM channels for clocksource and clock events) and pwm-samsung. Hopefully, I will have some patches ready soon. Best regards, -- Tomasz Figa Samsung Poland R&D Center SW Solution Development, Kernel and System Framework > ASoC: samsung: move plat/ headers to local directory > ASoC: samsung: convert to dmaengine API > ASoC: samsung: use irq resource for idma > ARM: exynos: prepare for sparse IRQ > ARM: exynos: hack to disable private clock code > ARM: exynos: work around missing gpio code on multiplatform > ARM: exynos: experimental multiplatform support > > arch/arm/Kconfig | 11 +- > arch/arm/Kconfig.debug | 8 + > arch/arm/include/debug/exynos.S | 39 +++ > arch/arm/include/debug/samsung.S | 87 +++++++ > arch/arm/mach-exynos/Kconfig | 36 ++- > arch/arm/mach-exynos/Makefile | 5 + > arch/arm/mach-exynos/common.c | 14 +- > arch/arm/mach-exynos/common.h | 2 +- > arch/arm/mach-exynos/dev-audio.c | 1 + > arch/arm/mach-exynos/dev-uart.c | 1 + > arch/arm/mach-exynos/include/mach/debug-macro.S | 39 --- > arch/arm/mach-exynos/include/mach/gpio.h | 2 + > arch/arm/mach-exynos/include/mach/irqs.h | 5 +- > arch/arm/mach-exynos/mach-armlex4210.c | 3 + > arch/arm/mach-exynos/mach-exynos4-dt.c | 2 + > arch/arm/mach-exynos/mach-exynos5-dt.c | 2 + > arch/arm/mach-exynos/mach-nuri.c | 2 + > arch/arm/mach-exynos/mach-origen.c | 3 + > arch/arm/mach-exynos/mach-smdk4x12.c | 2 + > arch/arm/mach-exynos/mach-smdkv310.c | 3 + > arch/arm/mach-exynos/setup-i2c0.c | 3 +- > arch/arm/mach-exynos/setup-sdhci-gpio.c | 2 +- > arch/arm/mach-exynos/setup-usb-phy.c | 8 +- > arch/arm/mach-s3c24xx/clock-s3c2440.c | 5 + > arch/arm/mach-s3c24xx/common.c | 5 + > arch/arm/mach-s3c24xx/dma-s3c2410.c | 2 - > arch/arm/mach-s3c24xx/dma-s3c2412.c | 2 - > arch/arm/mach-s3c24xx/dma-s3c2440.c | 2 - > arch/arm/mach-s3c24xx/dma-s3c2443.c | 2 - > arch/arm/mach-s3c24xx/include/mach/debug-macro.S | 2 +- > arch/arm/mach-s3c24xx/mach-rx1950.c | 1 - > arch/arm/mach-s3c64xx/include/mach/debug-macro.S | 2 +- > arch/arm/mach-s3c64xx/include/mach/gpio.h | 4 + > arch/arm/mach-s3c64xx/setup-usb-phy.c | 4 +- > arch/arm/mach-s5p64x0/include/mach/debug-macro.S | 2 +- > arch/arm/mach-s5pc100/include/mach/debug-macro.S | 2 +- > arch/arm/mach-s5pc100/setup-sdhci-gpio.c | 1 - > arch/arm/mach-s5pv210/include/mach/debug-macro.S | 2 +- > arch/arm/mach-s5pv210/setup-sdhci-gpio.c | 1 - > arch/arm/mach-s5pv210/setup-usb-phy.c | 4 +- > arch/arm/plat-samsung/Kconfig | 5 + > arch/arm/plat-samsung/Makefile | 3 + > arch/arm/plat-samsung/clock-clksrc.c | 3 + > arch/arm/plat-samsung/devs.c | 17 +- > arch/arm/plat-samsung/include/plat/debug-macro.S | 87 ------- > arch/arm/plat-samsung/include/plat/gpio-core.h | 3 + > arch/arm/plat-samsung/include/plat/regs-ac97.h | 67 ----- > arch/arm/plat-samsung/include/plat/regs-iic.h | 56 ----- > arch/arm/plat-samsung/include/plat/regs-iis.h | 70 ------ > arch/arm/plat-samsung/include/plat/regs-onenand.h | 63 ----- > arch/arm/plat-samsung/include/plat/regs-rtc.h | 71 ------ > arch/arm/plat-samsung/include/plat/regs-sdhci.h | 87 ------- > arch/arm/plat-samsung/include/plat/regs-serial.h | 282 > +--------------------- arch/arm/plat-samsung/include/plat/sdhci.h | > 56 +---- > arch/arm/plat-samsung/include/plat/usb-phy.h | 5 +- > arch/arm/plat-samsung/irq-vic-timer.c | 1 + > arch/arm/plat-samsung/pm-gpio.c | 1 + > arch/arm/plat-samsung/pm.c | 1 + > arch/arm/plat-samsung/s5p-clock.c | 3 + > arch/arm/plat-samsung/s5p-irq.c | 1 + > drivers/cpufreq/Kconfig.arm | 4 +- > drivers/devfreq/Kconfig | 1 + > drivers/gpio/Makefile | 2 +- > drivers/i2c/busses/i2c-s3c2410.c | 3 +- > drivers/i2c/busses/i2c-s3c2410.h | 56 +++++ > drivers/irqchip/exynos-combiner.c | 113 +++++---- > drivers/media/platform/exynos-gsc/gsc-regs.c | 1 - > drivers/media/platform/s5p-tv/sii9234_drv.c | 3 - > drivers/mmc/host/Kconfig | 2 +- > drivers/mmc/host/sdhci-s3c-regs.h | 87 +++++++ > drivers/mmc/host/sdhci-s3c.c | 5 +- > drivers/mtd/onenand/samsung.c | 4 +- > drivers/mtd/onenand/samsung.h | 61 +++++ > drivers/pwm/pwm-samsung.c | 60 +++-- > drivers/rtc/rtc-s3c.c | 3 +- > drivers/rtc/rtc-s3c.h | 70 ++++++ > drivers/spi/spi-s3c64xx.c | 107 ++++---- > drivers/thermal/exynos_thermal.c | 2 - > drivers/tty/serial/samsung.c | 17 +- > drivers/tty/serial/samsung.h | 4 +- > drivers/usb/host/ehci-s5p.c | 1 - > drivers/usb/host/ohci-exynos.c | 1 - > drivers/video/Kconfig | 2 +- > drivers/video/exynos/exynos_mipi_dsi.c | 2 - > drivers/video/exynos/exynos_mipi_dsi_common.c | 2 - > drivers/video/exynos/exynos_mipi_dsi_lowlevel.c | 2 - > drivers/watchdog/Kconfig | 1 + > include/linux/platform_data/mmc-sdhci-s3c.h | 56 +++++ > include/linux/platform_data/spi-s3c64xx.h | 3 + > include/linux/serial_s3c.h | 260 > ++++++++++++++++++++ sound/soc/samsung/ac97.c | > 17 +- > sound/soc/samsung/dma.c | 104 ++++---- > sound/soc/samsung/dma.h | 4 +- > sound/soc/samsung/h1940_uda1380.c | 2 +- > sound/soc/samsung/i2s.c | 9 +- > sound/soc/samsung/idma.c | 10 +- > sound/soc/samsung/neo1973_wm8753.c | 2 +- > sound/soc/samsung/pcm.c | 13 - > sound/soc/samsung/regs-ac97.h | 67 +++++ > sound/soc/samsung/regs-iis.h | 70 ++++++ > sound/soc/samsung/rx1950_uda1380.c | 2 +- > sound/soc/samsung/s3c2412-i2s.c | 10 - > sound/soc/samsung/s3c24xx-i2s.c | 12 +- > sound/soc/samsung/s3c24xx_uda134x.c | 2 +- > sound/soc/samsung/spdif.c | 6 - > 105 files changed, 1262 insertions(+), 1208 deletions(-) > create mode 100644 arch/arm/include/debug/exynos.S > create mode 100644 arch/arm/include/debug/samsung.S > delete mode 100644 arch/arm/mach-exynos/include/mach/debug-macro.S > delete mode 100644 arch/arm/plat-samsung/include/plat/debug-macro.S > delete mode 100644 arch/arm/plat-samsung/include/plat/regs-ac97.h > delete mode 100644 arch/arm/plat-samsung/include/plat/regs-iic.h > delete mode 100644 arch/arm/plat-samsung/include/plat/regs-iis.h > delete mode 100644 arch/arm/plat-samsung/include/plat/regs-onenand.h > delete mode 100644 arch/arm/plat-samsung/include/plat/regs-rtc.h > delete mode 100644 arch/arm/plat-samsung/include/plat/regs-sdhci.h > create mode 100644 drivers/i2c/busses/i2c-s3c2410.h > create mode 100644 drivers/mmc/host/sdhci-s3c-regs.h > create mode 100644 drivers/mtd/onenand/samsung.h > create mode 100644 drivers/rtc/rtc-s3c.h > create mode 100644 include/linux/platform_data/mmc-sdhci-s3c.h > create mode 100644 include/linux/serial_s3c.h > create mode 100644 sound/soc/samsung/regs-ac97.h > create mode 100644 sound/soc/samsung/regs-iis.h -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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