From 15fb63a08b1ed2d925bab4c3aa8934003ed6b7cb Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Mon, 14 Apr 2014 10:51:15 +0200 Subject: [PATCH 01/28] ASoC: sam9g20_wm8731: remove useless mach/gpio.h This include file is about to disapear. In addition it is useless for this code. So it is time to remove it. Signed-off-by: Nicolas Ferre Acked-by: Mark Brown --- sound/soc/atmel/sam9g20_wm8731.c | 1 - 1 file changed, 1 deletion(-) diff --git a/sound/soc/atmel/sam9g20_wm8731.c b/sound/soc/atmel/sam9g20_wm8731.c index 174bd546c08b..bb1149126c54 100644 --- a/sound/soc/atmel/sam9g20_wm8731.c +++ b/sound/soc/atmel/sam9g20_wm8731.c @@ -48,7 +48,6 @@ #include #include -#include #include "../codecs/wm8731.h" #include "atmel-pcm.h" From cf2e933ce6da2a8bacd52e49c4dd4c0974af1d09 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 27 Mar 2014 14:18:51 +0100 Subject: [PATCH 02/28] ARM: at91: localize GPIO header This moves the header in the AT91 platform down into the machine directory and removes the reliance on MACH_NEED_GPIO_H from the AT91. This does not move the platform to GENERIC_GPIO but localize the remaining work to be done for this to the mach-at91 folder. Signed-off-by: Linus Walleij [nicolas.ferre@atmel.com: adapt to newer kernel, add rsi-ews board] Signed-off-by: Nicolas Ferre --- arch/arm/Kconfig | 1 - arch/arm/mach-at91/at91rm9200_devices.c | 1 + arch/arm/mach-at91/at91sam9260_devices.c | 2 +- arch/arm/mach-at91/at91sam9261_devices.c | 2 +- arch/arm/mach-at91/at91sam9263_devices.c | 1 + arch/arm/mach-at91/at91sam9g45_devices.c | 1 + arch/arm/mach-at91/at91sam9rl_devices.c | 1 + arch/arm/mach-at91/board-1arm.c | 2 +- arch/arm/mach-at91/board-afeb-9260v1.c | 1 + arch/arm/mach-at91/board-cam60.c | 1 + arch/arm/mach-at91/board-carmeva.c | 1 + arch/arm/mach-at91/board-cpu9krea.c | 1 + arch/arm/mach-at91/board-cpuat91.c | 2 ++ arch/arm/mach-at91/board-csb337.c | 2 +- arch/arm/mach-at91/board-csb637.c | 1 + arch/arm/mach-at91/board-eb9200.c | 1 + arch/arm/mach-at91/board-ecbat91.c | 1 + arch/arm/mach-at91/board-eco920.c | 2 ++ arch/arm/mach-at91/board-flexibity.c | 1 + arch/arm/mach-at91/board-foxg20.c | 1 + arch/arm/mach-at91/board-gsia18s.c | 1 + arch/arm/mach-at91/board-kafa.c | 1 + arch/arm/mach-at91/board-kb9202.c | 1 + arch/arm/mach-at91/board-pcontrol-g20.c | 1 + arch/arm/mach-at91/board-picotux200.c | 1 + arch/arm/mach-at91/board-rm9200ek.c | 1 + arch/arm/mach-at91/board-rsi-ews.c | 1 + arch/arm/mach-at91/board-sam9-l9260.c | 1 + arch/arm/mach-at91/board-sam9260ek.c | 1 + arch/arm/mach-at91/board-sam9261ek.c | 1 + arch/arm/mach-at91/board-sam9263ek.c | 1 + arch/arm/mach-at91/board-sam9g20ek.c | 1 + arch/arm/mach-at91/board-sam9m10g45ek.c | 1 + arch/arm/mach-at91/board-sam9rlek.c | 1 + arch/arm/mach-at91/board-snapper9260.c | 1 + arch/arm/mach-at91/board-stamp9g20.c | 1 + arch/arm/mach-at91/board-yl-9200.c | 1 + arch/arm/mach-at91/gpio.c | 1 + arch/arm/mach-at91/{include/mach => }/gpio.h | 8 -------- arch/arm/mach-at91/include/mach/hardware.h | 15 +++++++++++++++ arch/arm/mach-at91/leds.c | 1 + arch/arm/mach-at91/pm.c | 1 + 42 files changed, 56 insertions(+), 13 deletions(-) rename arch/arm/mach-at91/{include/mach => }/gpio.h (96%) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index db3c5414223e..1c1fbbf6e4ae 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -376,7 +376,6 @@ config ARCH_AT91 select ARCH_REQUIRE_GPIOLIB select CLKDEV_LOOKUP select IRQ_DOMAIN - select NEED_MACH_GPIO_H select NEED_MACH_IO_H if PCCARD select PINCTRL select PINCTRL_AT91 if USE_OF diff --git a/arch/arm/mach-at91/at91rm9200_devices.c b/arch/arm/mach-at91/at91rm9200_devices.c index f3f19f21352a..4860918b411e 100644 --- a/arch/arm/mach-at91/at91rm9200_devices.c +++ b/arch/arm/mach-at91/at91rm9200_devices.c @@ -25,6 +25,7 @@ #include "board.h" #include "generic.h" +#include "gpio.h" /* -------------------------------------------------------------------- diff --git a/arch/arm/mach-at91/at91sam9260_devices.c b/arch/arm/mach-at91/at91sam9260_devices.c index a0282928e9c1..df5a7d83d37d 100644 --- a/arch/arm/mach-at91/at91sam9260_devices.c +++ b/arch/arm/mach-at91/at91sam9260_devices.c @@ -29,7 +29,7 @@ #include "board.h" #include "generic.h" - +#include "gpio.h" /* -------------------------------------------------------------------- * USB Host diff --git a/arch/arm/mach-at91/at91sam9261_devices.c b/arch/arm/mach-at91/at91sam9261_devices.c index 80e35895d28f..43b21f456f6e 100644 --- a/arch/arm/mach-at91/at91sam9261_devices.c +++ b/arch/arm/mach-at91/at91sam9261_devices.c @@ -29,7 +29,7 @@ #include "board.h" #include "generic.h" - +#include "gpio.h" /* -------------------------------------------------------------------- * USB Host diff --git a/arch/arm/mach-at91/at91sam9263_devices.c b/arch/arm/mach-at91/at91sam9263_devices.c index 43d53d6156dd..953616e5dbcb 100644 --- a/arch/arm/mach-at91/at91sam9263_devices.c +++ b/arch/arm/mach-at91/at91sam9263_devices.c @@ -28,6 +28,7 @@ #include "board.h" #include "generic.h" +#include "gpio.h" /* -------------------------------------------------------------------- diff --git a/arch/arm/mach-at91/at91sam9g45_devices.c b/arch/arm/mach-at91/at91sam9g45_devices.c index dab362c06487..7f02a5366a31 100644 --- a/arch/arm/mach-at91/at91sam9g45_devices.c +++ b/arch/arm/mach-at91/at91sam9g45_devices.c @@ -39,6 +39,7 @@ #include "board.h" #include "generic.h" #include "clock.h" +#include "gpio.h" /* -------------------------------------------------------------------- diff --git a/arch/arm/mach-at91/at91sam9rl_devices.c b/arch/arm/mach-at91/at91sam9rl_devices.c index 428fc412aaf1..ba7ebd9dd4bb 100644 --- a/arch/arm/mach-at91/at91sam9rl_devices.c +++ b/arch/arm/mach-at91/at91sam9rl_devices.c @@ -26,6 +26,7 @@ #include "board.h" #include "generic.h" +#include "gpio.h" /* -------------------------------------------------------------------- diff --git a/arch/arm/mach-at91/board-1arm.c b/arch/arm/mach-at91/board-1arm.c index 35ab632bbf68..3f6dbcc34022 100644 --- a/arch/arm/mach-at91/board-1arm.c +++ b/arch/arm/mach-at91/board-1arm.c @@ -39,7 +39,7 @@ #include "at91_aic.h" #include "board.h" #include "generic.h" - +#include "gpio.h" static void __init onearm_init_early(void) { diff --git a/arch/arm/mach-at91/board-afeb-9260v1.c b/arch/arm/mach-at91/board-afeb-9260v1.c index f95e31cda4b3..597c649170aa 100644 --- a/arch/arm/mach-at91/board-afeb-9260v1.c +++ b/arch/arm/mach-at91/board-afeb-9260v1.c @@ -46,6 +46,7 @@ #include "at91_aic.h" #include "board.h" #include "generic.h" +#include "gpio.h" static void __init afeb9260_init_early(void) diff --git a/arch/arm/mach-at91/board-cam60.c b/arch/arm/mach-at91/board-cam60.c index 112e867c4abe..a30502c8d379 100644 --- a/arch/arm/mach-at91/board-cam60.c +++ b/arch/arm/mach-at91/board-cam60.c @@ -44,6 +44,7 @@ #include "board.h" #include "sam9_smc.h" #include "generic.h" +#include "gpio.h" static void __init cam60_init_early(void) diff --git a/arch/arm/mach-at91/board-carmeva.c b/arch/arm/mach-at91/board-carmeva.c index 92983050a9bd..47313d3ee037 100644 --- a/arch/arm/mach-at91/board-carmeva.c +++ b/arch/arm/mach-at91/board-carmeva.c @@ -39,6 +39,7 @@ #include "at91_aic.h" #include "board.h" #include "generic.h" +#include "gpio.h" static void __init carmeva_init_early(void) diff --git a/arch/arm/mach-at91/board-cpu9krea.c b/arch/arm/mach-at91/board-cpu9krea.c index 008527efdbcf..2037f78c84e7 100644 --- a/arch/arm/mach-at91/board-cpu9krea.c +++ b/arch/arm/mach-at91/board-cpu9krea.c @@ -48,6 +48,7 @@ #include "board.h" #include "sam9_smc.h" #include "generic.h" +#include "gpio.h" static void __init cpu9krea_init_early(void) { diff --git a/arch/arm/mach-at91/board-cpuat91.c b/arch/arm/mach-at91/board-cpuat91.c index 42f1353a4baf..c094350c9314 100644 --- a/arch/arm/mach-at91/board-cpuat91.c +++ b/arch/arm/mach-at91/board-cpuat91.c @@ -43,6 +43,8 @@ #include "at91_aic.h" #include "board.h" #include "generic.h" +#include "gpio.h" + static struct gpio_led cpuat91_leds[] = { { diff --git a/arch/arm/mach-at91/board-csb337.c b/arch/arm/mach-at91/board-csb337.c index e5fde215225b..0e35a45cf8d4 100644 --- a/arch/arm/mach-at91/board-csb337.c +++ b/arch/arm/mach-at91/board-csb337.c @@ -42,7 +42,7 @@ #include "at91_aic.h" #include "board.h" #include "generic.h" - +#include "gpio.h" static void __init csb337_init_early(void) { diff --git a/arch/arm/mach-at91/board-csb637.c b/arch/arm/mach-at91/board-csb637.c index fdf11061c577..18d027f529a8 100644 --- a/arch/arm/mach-at91/board-csb637.c +++ b/arch/arm/mach-at91/board-csb637.c @@ -39,6 +39,7 @@ #include "at91_aic.h" #include "board.h" #include "generic.h" +#include "gpio.h" static void __init csb637_init_early(void) diff --git a/arch/arm/mach-at91/board-eb9200.c b/arch/arm/mach-at91/board-eb9200.c index f9be8161bbfa..aa457a8b22f5 100644 --- a/arch/arm/mach-at91/board-eb9200.c +++ b/arch/arm/mach-at91/board-eb9200.c @@ -38,6 +38,7 @@ #include "at91_aic.h" #include "board.h" #include "generic.h" +#include "gpio.h" static void __init eb9200_init_early(void) diff --git a/arch/arm/mach-at91/board-ecbat91.c b/arch/arm/mach-at91/board-ecbat91.c index b2fcd71262ba..ede1373ccaba 100644 --- a/arch/arm/mach-at91/board-ecbat91.c +++ b/arch/arm/mach-at91/board-ecbat91.c @@ -42,6 +42,7 @@ #include "at91_aic.h" #include "board.h" #include "generic.h" +#include "gpio.h" static void __init ecb_at91init_early(void) diff --git a/arch/arm/mach-at91/board-eco920.c b/arch/arm/mach-at91/board-eco920.c index 77de410efc90..4e75321a8f2a 100644 --- a/arch/arm/mach-at91/board-eco920.c +++ b/arch/arm/mach-at91/board-eco920.c @@ -31,6 +31,8 @@ #include "at91_aic.h" #include "board.h" #include "generic.h" +#include "gpio.h" + static void __init eco920_init_early(void) { diff --git a/arch/arm/mach-at91/board-flexibity.c b/arch/arm/mach-at91/board-flexibity.c index 737c08563628..68f1ab6bd08f 100644 --- a/arch/arm/mach-at91/board-flexibity.c +++ b/arch/arm/mach-at91/board-flexibity.c @@ -37,6 +37,7 @@ #include "at91_aic.h" #include "board.h" #include "generic.h" +#include "gpio.h" static void __init flexibity_init_early(void) { diff --git a/arch/arm/mach-at91/board-foxg20.c b/arch/arm/mach-at91/board-foxg20.c index c20a870ea9c9..8b22c60bb238 100644 --- a/arch/arm/mach-at91/board-foxg20.c +++ b/arch/arm/mach-at91/board-foxg20.c @@ -47,6 +47,7 @@ #include "board.h" #include "sam9_smc.h" #include "generic.h" +#include "gpio.h" /* * The FOX Board G20 hardware comes as the "Netus G20" board with diff --git a/arch/arm/mach-at91/board-gsia18s.c b/arch/arm/mach-at91/board-gsia18s.c index 416bae8435ee..b729dd1271bf 100644 --- a/arch/arm/mach-at91/board-gsia18s.c +++ b/arch/arm/mach-at91/board-gsia18s.c @@ -39,6 +39,7 @@ #include "generic.h" #include "gsia18s.h" #include "stamp9g20.h" +#include "gpio.h" static void __init gsia18s_init_early(void) { diff --git a/arch/arm/mach-at91/board-kafa.c b/arch/arm/mach-at91/board-kafa.c index 88e2f5d2d16d..93b1df42f639 100644 --- a/arch/arm/mach-at91/board-kafa.c +++ b/arch/arm/mach-at91/board-kafa.c @@ -39,6 +39,7 @@ #include "at91_aic.h" #include "board.h" #include "generic.h" +#include "gpio.h" static void __init kafa_init_early(void) diff --git a/arch/arm/mach-at91/board-kb9202.c b/arch/arm/mach-at91/board-kb9202.c index 0c519d9ebffc..d58d36225e08 100644 --- a/arch/arm/mach-at91/board-kb9202.c +++ b/arch/arm/mach-at91/board-kb9202.c @@ -42,6 +42,7 @@ #include "at91_aic.h" #include "board.h" #include "generic.h" +#include "gpio.h" static void __init kb9202_init_early(void) diff --git a/arch/arm/mach-at91/board-pcontrol-g20.c b/arch/arm/mach-at91/board-pcontrol-g20.c index 5f25fa54eb93..b48d95ec5152 100644 --- a/arch/arm/mach-at91/board-pcontrol-g20.c +++ b/arch/arm/mach-at91/board-pcontrol-g20.c @@ -37,6 +37,7 @@ #include "sam9_smc.h" #include "generic.h" #include "stamp9g20.h" +#include "gpio.h" static void __init pcontrol_g20_init_early(void) diff --git a/arch/arm/mach-at91/board-picotux200.c b/arch/arm/mach-at91/board-picotux200.c index ab2b2ec36c14..2c0f2d554d84 100644 --- a/arch/arm/mach-at91/board-picotux200.c +++ b/arch/arm/mach-at91/board-picotux200.c @@ -43,6 +43,7 @@ #include "at91_aic.h" #include "board.h" #include "generic.h" +#include "gpio.h" static void __init picotux200_init_early(void) diff --git a/arch/arm/mach-at91/board-rm9200ek.c b/arch/arm/mach-at91/board-rm9200ek.c index 8b17dadc1aba..953cea416754 100644 --- a/arch/arm/mach-at91/board-rm9200ek.c +++ b/arch/arm/mach-at91/board-rm9200ek.c @@ -45,6 +45,7 @@ #include "at91_aic.h" #include "board.h" #include "generic.h" +#include "gpio.h" static void __init ek_init_early(void) diff --git a/arch/arm/mach-at91/board-rsi-ews.c b/arch/arm/mach-at91/board-rsi-ews.c index f6d7f1958c7e..f28e8b74df4b 100644 --- a/arch/arm/mach-at91/board-rsi-ews.c +++ b/arch/arm/mach-at91/board-rsi-ews.c @@ -31,6 +31,7 @@ #include "at91_aic.h" #include "board.h" #include "generic.h" +#include "gpio.h" static void __init rsi_ews_init_early(void) { diff --git a/arch/arm/mach-at91/board-sam9-l9260.c b/arch/arm/mach-at91/board-sam9-l9260.c index 43ee4dc43b50..d24dda67e2d3 100644 --- a/arch/arm/mach-at91/board-sam9-l9260.c +++ b/arch/arm/mach-at91/board-sam9-l9260.c @@ -43,6 +43,7 @@ #include "board.h" #include "sam9_smc.h" #include "generic.h" +#include "gpio.h" static void __init ek_init_early(void) diff --git a/arch/arm/mach-at91/board-sam9260ek.c b/arch/arm/mach-at91/board-sam9260ek.c index f4f8735315da..65dea12d685e 100644 --- a/arch/arm/mach-at91/board-sam9260ek.c +++ b/arch/arm/mach-at91/board-sam9260ek.c @@ -49,6 +49,7 @@ #include "board.h" #include "sam9_smc.h" #include "generic.h" +#include "gpio.h" static void __init ek_init_early(void) diff --git a/arch/arm/mach-at91/board-sam9261ek.c b/arch/arm/mach-at91/board-sam9261ek.c index 473546b9408b..4637432de08f 100644 --- a/arch/arm/mach-at91/board-sam9261ek.c +++ b/arch/arm/mach-at91/board-sam9261ek.c @@ -53,6 +53,7 @@ #include "board.h" #include "sam9_smc.h" #include "generic.h" +#include "gpio.h" static void __init ek_init_early(void) diff --git a/arch/arm/mach-at91/board-sam9263ek.c b/arch/arm/mach-at91/board-sam9263ek.c index 2f931915c80c..cd2726ee5add 100644 --- a/arch/arm/mach-at91/board-sam9263ek.c +++ b/arch/arm/mach-at91/board-sam9263ek.c @@ -52,6 +52,7 @@ #include "board.h" #include "sam9_smc.h" #include "generic.h" +#include "gpio.h" static void __init ek_init_early(void) diff --git a/arch/arm/mach-at91/board-sam9g20ek.c b/arch/arm/mach-at91/board-sam9g20ek.c index f9cd1f2c7146..e1be6e25b380 100644 --- a/arch/arm/mach-at91/board-sam9g20ek.c +++ b/arch/arm/mach-at91/board-sam9g20ek.c @@ -50,6 +50,7 @@ #include "board.h" #include "sam9_smc.h" #include "generic.h" +#include "gpio.h" /* * board revision encoding diff --git a/arch/arm/mach-at91/board-sam9m10g45ek.c b/arch/arm/mach-at91/board-sam9m10g45ek.c index ef39078c8ce2..5cd95ede623e 100644 --- a/arch/arm/mach-at91/board-sam9m10g45ek.c +++ b/arch/arm/mach-at91/board-sam9m10g45ek.c @@ -50,6 +50,7 @@ #include "board.h" #include "sam9_smc.h" #include "generic.h" +#include "gpio.h" static void __init ek_init_early(void) diff --git a/arch/arm/mach-at91/board-sam9rlek.c b/arch/arm/mach-at91/board-sam9rlek.c index 604eecf6cd70..6b81e4671646 100644 --- a/arch/arm/mach-at91/board-sam9rlek.c +++ b/arch/arm/mach-at91/board-sam9rlek.c @@ -38,6 +38,7 @@ #include "board.h" #include "sam9_smc.h" #include "generic.h" +#include "gpio.h" static void __init ek_init_early(void) diff --git a/arch/arm/mach-at91/board-snapper9260.c b/arch/arm/mach-at91/board-snapper9260.c index f1d49e929ccb..1b870e6def0c 100644 --- a/arch/arm/mach-at91/board-snapper9260.c +++ b/arch/arm/mach-at91/board-snapper9260.c @@ -38,6 +38,7 @@ #include "board.h" #include "sam9_smc.h" #include "generic.h" +#include "gpio.h" #define SNAPPER9260_IO_EXP_GPIO(x) (NR_BUILTIN_GPIO + (x)) diff --git a/arch/arm/mach-at91/board-stamp9g20.c b/arch/arm/mach-at91/board-stamp9g20.c index e4a5ac17cdbc..3b575036ff96 100644 --- a/arch/arm/mach-at91/board-stamp9g20.c +++ b/arch/arm/mach-at91/board-stamp9g20.c @@ -32,6 +32,7 @@ #include "board.h" #include "sam9_smc.h" #include "generic.h" +#include "gpio.h" void __init stamp9g20_init_early(void) diff --git a/arch/arm/mach-at91/board-yl-9200.c b/arch/arm/mach-at91/board-yl-9200.c index be083771df2e..46fdb0c68a68 100644 --- a/arch/arm/mach-at91/board-yl-9200.c +++ b/arch/arm/mach-at91/board-yl-9200.c @@ -50,6 +50,7 @@ #include "at91_aic.h" #include "board.h" #include "generic.h" +#include "gpio.h" static void __init yl9200_init_early(void) diff --git a/arch/arm/mach-at91/gpio.c b/arch/arm/mach-at91/gpio.c index a5afcf76550e..12ed05bbdc5c 100644 --- a/arch/arm/mach-at91/gpio.c +++ b/arch/arm/mach-at91/gpio.c @@ -29,6 +29,7 @@ #include #include "generic.h" +#include "gpio.h" #define MAX_NB_GPIO_PER_BANK 32 diff --git a/arch/arm/mach-at91/include/mach/gpio.h b/arch/arm/mach-at91/gpio.h similarity index 96% rename from arch/arm/mach-at91/include/mach/gpio.h rename to arch/arm/mach-at91/gpio.h index 5fc23771c154..eed465ab0dd7 100644 --- a/arch/arm/mach-at91/include/mach/gpio.h +++ b/arch/arm/mach-at91/gpio.h @@ -209,14 +209,6 @@ extern int at91_get_gpio_value(unsigned pin); extern void at91_gpio_suspend(void); extern void at91_gpio_resume(void); -#ifdef CONFIG_PINCTRL_AT91 -extern void at91_pinctrl_gpio_suspend(void); -extern void at91_pinctrl_gpio_resume(void); -#else -static inline void at91_pinctrl_gpio_suspend(void) {} -static inline void at91_pinctrl_gpio_resume(void) {} -#endif - #endif /* __ASSEMBLY__ */ #endif diff --git a/arch/arm/mach-at91/include/mach/hardware.h b/arch/arm/mach-at91/include/mach/hardware.h index f17aa3150019..56338245653a 100644 --- a/arch/arm/mach-at91/include/mach/hardware.h +++ b/arch/arm/mach-at91/include/mach/hardware.h @@ -104,5 +104,20 @@ /* Clocks */ #define AT91_SLOW_CLOCK 32768 /* slow clock */ +/* + * FIXME: this is needed to communicate between the pinctrl driver and + * the PM implementation in the machine. Possibly part of the PM + * implementation should be moved down into the pinctrl driver and get + * called as part of the generic suspend/resume path. + */ +#ifndef __ASSEMBLY__ +#ifdef CONFIG_PINCTRL_AT91 +extern void at91_pinctrl_gpio_suspend(void); +extern void at91_pinctrl_gpio_resume(void); +#else +static inline void at91_pinctrl_gpio_suspend(void) {} +static inline void at91_pinctrl_gpio_resume(void) {} +#endif +#endif #endif diff --git a/arch/arm/mach-at91/leds.c b/arch/arm/mach-at91/leds.c index 3e22978b5547..77c4d8fd03fd 100644 --- a/arch/arm/mach-at91/leds.c +++ b/arch/arm/mach-at91/leds.c @@ -16,6 +16,7 @@ #include #include "board.h" +#include "gpio.h" /* ------------------------------------------------------------------------- */ diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c index 8bda1cefdf96..e95554532987 100644 --- a/arch/arm/mach-at91/pm.c +++ b/arch/arm/mach-at91/pm.c @@ -32,6 +32,7 @@ #include "at91_aic.h" #include "generic.h" #include "pm.h" +#include "gpio.h" /* * Show the reason for the previous system reset. From 27cb1c2083373a44130d50d4d2fb64cf7eff2d90 Mon Sep 17 00:00:00 2001 From: Boris BREZILLON Date: Wed, 7 May 2014 18:00:08 +0200 Subject: [PATCH 03/28] clk: at91: rework main clk implementation AT91 main clk is a clk multiplexer and not a simple fixed rate clk as currently implemented. In some SoCs (sam9x5, sama5, sam9g45 families) this multiplexer can choose among 2 sources: an internal RC oscillator circuit and an oscillator using an external crystal. In other Socs (sam9260, rm9200 families) the multiplexer source is hardcoded to the external crystal oscillator. Signed-off-by: Boris BREZILLON Acked-by: Mike Turquette Signed-off-by: Nicolas Ferre --- drivers/clk/at91/clk-main.c | 599 +++++++++++++++++++++++++++++++----- drivers/clk/at91/pmc.c | 12 + drivers/clk/at91/pmc.h | 6 + 3 files changed, 543 insertions(+), 74 deletions(-) diff --git a/drivers/clk/at91/clk-main.c b/drivers/clk/at91/clk-main.c index 8e9e8cc0412d..733306131b99 100644 --- a/drivers/clk/at91/clk-main.c +++ b/drivers/clk/at91/clk-main.c @@ -30,99 +30,412 @@ #define MAINF_LOOP_MIN_WAIT (USEC_PER_SEC / SLOW_CLOCK_FREQ) #define MAINF_LOOP_MAX_WAIT MAINFRDY_TIMEOUT -struct clk_main { +#define MOR_KEY_MASK (0xff << 16) + +struct clk_main_osc { struct clk_hw hw; struct at91_pmc *pmc; - unsigned long rate; unsigned int irq; wait_queue_head_t wait; }; -#define to_clk_main(hw) container_of(hw, struct clk_main, hw) +#define to_clk_main_osc(hw) container_of(hw, struct clk_main_osc, hw) -static irqreturn_t clk_main_irq_handler(int irq, void *dev_id) +struct clk_main_rc_osc { + struct clk_hw hw; + struct at91_pmc *pmc; + unsigned int irq; + wait_queue_head_t wait; + unsigned long frequency; + unsigned long accuracy; +}; + +#define to_clk_main_rc_osc(hw) container_of(hw, struct clk_main_rc_osc, hw) + +struct clk_rm9200_main { + struct clk_hw hw; + struct at91_pmc *pmc; +}; + +#define to_clk_rm9200_main(hw) container_of(hw, struct clk_rm9200_main, hw) + +struct clk_sam9x5_main { + struct clk_hw hw; + struct at91_pmc *pmc; + unsigned int irq; + wait_queue_head_t wait; + u8 parent; +}; + +#define to_clk_sam9x5_main(hw) container_of(hw, struct clk_sam9x5_main, hw) + +static irqreturn_t clk_main_osc_irq_handler(int irq, void *dev_id) { - struct clk_main *clkmain = (struct clk_main *)dev_id; + struct clk_main_osc *osc = dev_id; - wake_up(&clkmain->wait); - disable_irq_nosync(clkmain->irq); + wake_up(&osc->wait); + disable_irq_nosync(osc->irq); return IRQ_HANDLED; } -static int clk_main_prepare(struct clk_hw *hw) +static int clk_main_osc_prepare(struct clk_hw *hw) { - struct clk_main *clkmain = to_clk_main(hw); - struct at91_pmc *pmc = clkmain->pmc; - unsigned long halt_time, timeout; + struct clk_main_osc *osc = to_clk_main_osc(hw); + struct at91_pmc *pmc = osc->pmc; u32 tmp; - while (!(pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCS)) { - enable_irq(clkmain->irq); - wait_event(clkmain->wait, - pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCS); - } - - if (clkmain->rate) + tmp = pmc_read(pmc, AT91_CKGR_MOR) & ~MOR_KEY_MASK; + if (tmp & AT91_PMC_OSCBYPASS) return 0; - timeout = jiffies + usecs_to_jiffies(MAINFRDY_TIMEOUT); - do { - halt_time = jiffies; - tmp = pmc_read(pmc, AT91_CKGR_MCFR); - if (tmp & AT91_PMC_MAINRDY) - return 0; - usleep_range(MAINF_LOOP_MIN_WAIT, MAINF_LOOP_MAX_WAIT); - } while (time_before(halt_time, timeout)); + if (!(tmp & AT91_PMC_MOSCEN)) { + tmp |= AT91_PMC_MOSCEN | AT91_PMC_KEY; + pmc_write(pmc, AT91_CKGR_MOR, tmp); + } + + while (!(pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCS)) { + enable_irq(osc->irq); + wait_event(osc->wait, + pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCS); + } return 0; } -static int clk_main_is_prepared(struct clk_hw *hw) +static void clk_main_osc_unprepare(struct clk_hw *hw) { - struct clk_main *clkmain = to_clk_main(hw); + struct clk_main_osc *osc = to_clk_main_osc(hw); + struct at91_pmc *pmc = osc->pmc; + u32 tmp = pmc_read(pmc, AT91_CKGR_MOR); - return !!(pmc_read(clkmain->pmc, AT91_PMC_SR) & AT91_PMC_MOSCS); + if (tmp & AT91_PMC_OSCBYPASS) + return; + + if (!(tmp & AT91_PMC_MOSCEN)) + return; + + tmp &= ~(AT91_PMC_KEY | AT91_PMC_MOSCEN); + pmc_write(pmc, AT91_CKGR_MOR, tmp | AT91_PMC_KEY); } -static unsigned long clk_main_recalc_rate(struct clk_hw *hw, - unsigned long parent_rate) +static int clk_main_osc_is_prepared(struct clk_hw *hw) { - u32 tmp; - struct clk_main *clkmain = to_clk_main(hw); - struct at91_pmc *pmc = clkmain->pmc; + struct clk_main_osc *osc = to_clk_main_osc(hw); + struct at91_pmc *pmc = osc->pmc; + u32 tmp = pmc_read(pmc, AT91_CKGR_MOR); - if (clkmain->rate) - return clkmain->rate; + if (tmp & AT91_PMC_OSCBYPASS) + return 1; - tmp = pmc_read(pmc, AT91_CKGR_MCFR) & AT91_PMC_MAINF; - clkmain->rate = (tmp * parent_rate) / MAINF_DIV; - - return clkmain->rate; + return !!((pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCS) && + (pmc_read(pmc, AT91_CKGR_MOR) & AT91_PMC_MOSCEN)); } -static const struct clk_ops main_ops = { - .prepare = clk_main_prepare, - .is_prepared = clk_main_is_prepared, - .recalc_rate = clk_main_recalc_rate, +static const struct clk_ops main_osc_ops = { + .prepare = clk_main_osc_prepare, + .unprepare = clk_main_osc_unprepare, + .is_prepared = clk_main_osc_is_prepared, }; static struct clk * __init -at91_clk_register_main(struct at91_pmc *pmc, - unsigned int irq, - const char *name, - const char *parent_name, - unsigned long rate) +at91_clk_register_main_osc(struct at91_pmc *pmc, + unsigned int irq, + const char *name, + const char *parent_name, + bool bypass) { int ret; - struct clk_main *clkmain; + struct clk_main_osc *osc; struct clk *clk = NULL; struct clk_init_data init; - if (!pmc || !irq || !name) + if (!pmc || !irq || !name || !parent_name) return ERR_PTR(-EINVAL); - if (!rate && !parent_name) + osc = kzalloc(sizeof(*osc), GFP_KERNEL); + if (!osc) + return ERR_PTR(-ENOMEM); + + init.name = name; + init.ops = &main_osc_ops; + init.parent_names = &parent_name; + init.num_parents = 1; + init.flags = CLK_IGNORE_UNUSED; + + osc->hw.init = &init; + osc->pmc = pmc; + osc->irq = irq; + + init_waitqueue_head(&osc->wait); + irq_set_status_flags(osc->irq, IRQ_NOAUTOEN); + ret = request_irq(osc->irq, clk_main_osc_irq_handler, + IRQF_TRIGGER_HIGH, name, osc); + if (ret) + return ERR_PTR(ret); + + if (bypass) + pmc_write(pmc, AT91_CKGR_MOR, + (pmc_read(pmc, AT91_CKGR_MOR) & + ~(MOR_KEY_MASK | AT91_PMC_MOSCEN)) | + AT91_PMC_OSCBYPASS | AT91_PMC_KEY); + + clk = clk_register(NULL, &osc->hw); + if (IS_ERR(clk)) { + free_irq(irq, osc); + kfree(osc); + } + + return clk; +} + +void __init of_at91rm9200_clk_main_osc_setup(struct device_node *np, + struct at91_pmc *pmc) +{ + struct clk *clk; + unsigned int irq; + const char *name = np->name; + const char *parent_name; + bool bypass; + + of_property_read_string(np, "clock-output-names", &name); + bypass = of_property_read_bool(np, "atmel,osc-bypass"); + parent_name = of_clk_get_parent_name(np, 0); + + irq = irq_of_parse_and_map(np, 0); + if (!irq) + return; + + clk = at91_clk_register_main_osc(pmc, irq, name, parent_name, bypass); + if (IS_ERR(clk)) + return; + + of_clk_add_provider(np, of_clk_src_simple_get, clk); +} + +static irqreturn_t clk_main_rc_osc_irq_handler(int irq, void *dev_id) +{ + struct clk_main_rc_osc *osc = dev_id; + + wake_up(&osc->wait); + disable_irq_nosync(osc->irq); + + return IRQ_HANDLED; +} + +static int clk_main_rc_osc_prepare(struct clk_hw *hw) +{ + struct clk_main_rc_osc *osc = to_clk_main_rc_osc(hw); + struct at91_pmc *pmc = osc->pmc; + u32 tmp; + + tmp = pmc_read(pmc, AT91_CKGR_MOR) & ~MOR_KEY_MASK; + + if (!(tmp & AT91_PMC_MOSCRCEN)) { + tmp |= AT91_PMC_MOSCRCEN | AT91_PMC_KEY; + pmc_write(pmc, AT91_CKGR_MOR, tmp); + } + + while (!(pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCRCS)) { + enable_irq(osc->irq); + wait_event(osc->wait, + pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCRCS); + } + + return 0; +} + +static void clk_main_rc_osc_unprepare(struct clk_hw *hw) +{ + struct clk_main_rc_osc *osc = to_clk_main_rc_osc(hw); + struct at91_pmc *pmc = osc->pmc; + u32 tmp = pmc_read(pmc, AT91_CKGR_MOR); + + if (!(tmp & AT91_PMC_MOSCRCEN)) + return; + + tmp &= ~(MOR_KEY_MASK | AT91_PMC_MOSCRCEN); + pmc_write(pmc, AT91_CKGR_MOR, tmp | AT91_PMC_KEY); +} + +static int clk_main_rc_osc_is_prepared(struct clk_hw *hw) +{ + struct clk_main_rc_osc *osc = to_clk_main_rc_osc(hw); + struct at91_pmc *pmc = osc->pmc; + + return !!((pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCRCS) && + (pmc_read(pmc, AT91_CKGR_MOR) & AT91_PMC_MOSCRCEN)); +} + +static unsigned long clk_main_rc_osc_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct clk_main_rc_osc *osc = to_clk_main_rc_osc(hw); + + return osc->frequency; +} + +static unsigned long clk_main_rc_osc_recalc_accuracy(struct clk_hw *hw, + unsigned long parent_acc) +{ + struct clk_main_rc_osc *osc = to_clk_main_rc_osc(hw); + + return osc->accuracy; +} + +static const struct clk_ops main_rc_osc_ops = { + .prepare = clk_main_rc_osc_prepare, + .unprepare = clk_main_rc_osc_unprepare, + .is_prepared = clk_main_rc_osc_is_prepared, + .recalc_rate = clk_main_rc_osc_recalc_rate, + .recalc_accuracy = clk_main_rc_osc_recalc_accuracy, +}; + +static struct clk * __init +at91_clk_register_main_rc_osc(struct at91_pmc *pmc, + unsigned int irq, + const char *name, + u32 frequency, u32 accuracy) +{ + int ret; + struct clk_main_rc_osc *osc; + struct clk *clk = NULL; + struct clk_init_data init; + + if (!pmc || !irq || !name || !frequency) + return ERR_PTR(-EINVAL); + + osc = kzalloc(sizeof(*osc), GFP_KERNEL); + if (!osc) + return ERR_PTR(-ENOMEM); + + init.name = name; + init.ops = &main_rc_osc_ops; + init.parent_names = NULL; + init.num_parents = 0; + init.flags = CLK_IS_ROOT | CLK_IGNORE_UNUSED; + + osc->hw.init = &init; + osc->pmc = pmc; + osc->irq = irq; + osc->frequency = frequency; + osc->accuracy = accuracy; + + init_waitqueue_head(&osc->wait); + irq_set_status_flags(osc->irq, IRQ_NOAUTOEN); + ret = request_irq(osc->irq, clk_main_rc_osc_irq_handler, + IRQF_TRIGGER_HIGH, name, osc); + if (ret) + return ERR_PTR(ret); + + clk = clk_register(NULL, &osc->hw); + if (IS_ERR(clk)) { + free_irq(irq, osc); + kfree(osc); + } + + return clk; +} + +void __init of_at91sam9x5_clk_main_rc_osc_setup(struct device_node *np, + struct at91_pmc *pmc) +{ + struct clk *clk; + unsigned int irq; + u32 frequency = 0; + u32 accuracy = 0; + const char *name = np->name; + + of_property_read_string(np, "clock-output-names", &name); + of_property_read_u32(np, "clock-frequency", &frequency); + of_property_read_u32(np, "clock-accuracy", &accuracy); + + irq = irq_of_parse_and_map(np, 0); + if (!irq) + return; + + clk = at91_clk_register_main_rc_osc(pmc, irq, name, frequency, + accuracy); + if (IS_ERR(clk)) + return; + + of_clk_add_provider(np, of_clk_src_simple_get, clk); +} + + +static int clk_main_probe_frequency(struct at91_pmc *pmc) +{ + unsigned long prep_time, timeout; + u32 tmp; + + timeout = jiffies + usecs_to_jiffies(MAINFRDY_TIMEOUT); + do { + prep_time = jiffies; + tmp = pmc_read(pmc, AT91_CKGR_MCFR); + if (tmp & AT91_PMC_MAINRDY) + return 0; + usleep_range(MAINF_LOOP_MIN_WAIT, MAINF_LOOP_MAX_WAIT); + } while (time_before(prep_time, timeout)); + + return -ETIMEDOUT; +} + +static unsigned long clk_main_recalc_rate(struct at91_pmc *pmc, + unsigned long parent_rate) +{ + u32 tmp; + + if (parent_rate) + return parent_rate; + + tmp = pmc_read(pmc, AT91_CKGR_MCFR); + if (!(tmp & AT91_PMC_MAINRDY)) + return 0; + + return ((tmp & AT91_PMC_MAINF) * SLOW_CLOCK_FREQ) / MAINF_DIV; +} + +static int clk_rm9200_main_prepare(struct clk_hw *hw) +{ + struct clk_rm9200_main *clkmain = to_clk_rm9200_main(hw); + + return clk_main_probe_frequency(clkmain->pmc); +} + +static int clk_rm9200_main_is_prepared(struct clk_hw *hw) +{ + struct clk_rm9200_main *clkmain = to_clk_rm9200_main(hw); + + return !!(pmc_read(clkmain->pmc, AT91_CKGR_MCFR) & AT91_PMC_MAINRDY); +} + +static unsigned long clk_rm9200_main_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct clk_rm9200_main *clkmain = to_clk_rm9200_main(hw); + + return clk_main_recalc_rate(clkmain->pmc, parent_rate); +} + +static const struct clk_ops rm9200_main_ops = { + .prepare = clk_rm9200_main_prepare, + .is_prepared = clk_rm9200_main_is_prepared, + .recalc_rate = clk_rm9200_main_recalc_rate, +}; + +static struct clk * __init +at91_clk_register_rm9200_main(struct at91_pmc *pmc, + const char *name, + const char *parent_name) +{ + struct clk_rm9200_main *clkmain; + struct clk *clk = NULL; + struct clk_init_data init; + + if (!pmc || !name) + return ERR_PTR(-EINVAL); + + if (!parent_name) return ERR_PTR(-EINVAL); clkmain = kzalloc(sizeof(*clkmain), GFP_KERNEL); @@ -130,19 +443,154 @@ at91_clk_register_main(struct at91_pmc *pmc, return ERR_PTR(-ENOMEM); init.name = name; - init.ops = &main_ops; - init.parent_names = parent_name ? &parent_name : NULL; - init.num_parents = parent_name ? 1 : 0; - init.flags = parent_name ? 0 : CLK_IS_ROOT; + init.ops = &rm9200_main_ops; + init.parent_names = &parent_name; + init.num_parents = 1; + init.flags = 0; + + clkmain->hw.init = &init; + clkmain->pmc = pmc; + + clk = clk_register(NULL, &clkmain->hw); + if (IS_ERR(clk)) + kfree(clkmain); + + return clk; +} + +void __init of_at91rm9200_clk_main_setup(struct device_node *np, + struct at91_pmc *pmc) +{ + struct clk *clk; + const char *parent_name; + const char *name = np->name; + + parent_name = of_clk_get_parent_name(np, 0); + of_property_read_string(np, "clock-output-names", &name); + + clk = at91_clk_register_rm9200_main(pmc, name, parent_name); + if (IS_ERR(clk)) + return; + + of_clk_add_provider(np, of_clk_src_simple_get, clk); +} + +static irqreturn_t clk_sam9x5_main_irq_handler(int irq, void *dev_id) +{ + struct clk_sam9x5_main *clkmain = dev_id; + + wake_up(&clkmain->wait); + disable_irq_nosync(clkmain->irq); + + return IRQ_HANDLED; +} + +static int clk_sam9x5_main_prepare(struct clk_hw *hw) +{ + struct clk_sam9x5_main *clkmain = to_clk_sam9x5_main(hw); + struct at91_pmc *pmc = clkmain->pmc; + + while (!(pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCSELS)) { + enable_irq(clkmain->irq); + wait_event(clkmain->wait, + pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCSELS); + } + + return clk_main_probe_frequency(pmc); +} + +static int clk_sam9x5_main_is_prepared(struct clk_hw *hw) +{ + struct clk_sam9x5_main *clkmain = to_clk_sam9x5_main(hw); + + return !!(pmc_read(clkmain->pmc, AT91_PMC_SR) & AT91_PMC_MOSCSELS); +} + +static unsigned long clk_sam9x5_main_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct clk_sam9x5_main *clkmain = to_clk_sam9x5_main(hw); + + return clk_main_recalc_rate(clkmain->pmc, parent_rate); +} + +static int clk_sam9x5_main_set_parent(struct clk_hw *hw, u8 index) +{ + struct clk_sam9x5_main *clkmain = to_clk_sam9x5_main(hw); + struct at91_pmc *pmc = clkmain->pmc; + u32 tmp; + + if (index > 1) + return -EINVAL; + + tmp = pmc_read(pmc, AT91_CKGR_MOR) & ~MOR_KEY_MASK; + + if (index && !(tmp & AT91_PMC_MOSCSEL)) + pmc_write(pmc, AT91_CKGR_MOR, tmp | AT91_PMC_MOSCSEL); + else if (!index && (tmp & AT91_PMC_MOSCSEL)) + pmc_write(pmc, AT91_CKGR_MOR, tmp & ~AT91_PMC_MOSCSEL); + + while (!(pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCSELS)) { + enable_irq(clkmain->irq); + wait_event(clkmain->wait, + pmc_read(pmc, AT91_PMC_SR) & AT91_PMC_MOSCSELS); + } + + return 0; +} + +static u8 clk_sam9x5_main_get_parent(struct clk_hw *hw) +{ + struct clk_sam9x5_main *clkmain = to_clk_sam9x5_main(hw); + + return !!(pmc_read(clkmain->pmc, AT91_CKGR_MOR) & AT91_PMC_MOSCEN); +} + +static const struct clk_ops sam9x5_main_ops = { + .prepare = clk_sam9x5_main_prepare, + .is_prepared = clk_sam9x5_main_is_prepared, + .recalc_rate = clk_sam9x5_main_recalc_rate, + .set_parent = clk_sam9x5_main_set_parent, + .get_parent = clk_sam9x5_main_get_parent, +}; + +static struct clk * __init +at91_clk_register_sam9x5_main(struct at91_pmc *pmc, + unsigned int irq, + const char *name, + const char **parent_names, + int num_parents) +{ + int ret; + struct clk_sam9x5_main *clkmain; + struct clk *clk = NULL; + struct clk_init_data init; + + if (!pmc || !irq || !name) + return ERR_PTR(-EINVAL); + + if (!parent_names || !num_parents) + return ERR_PTR(-EINVAL); + + clkmain = kzalloc(sizeof(*clkmain), GFP_KERNEL); + if (!clkmain) + return ERR_PTR(-ENOMEM); + + init.name = name; + init.ops = &sam9x5_main_ops; + init.parent_names = parent_names; + init.num_parents = num_parents; + init.flags = CLK_SET_PARENT_GATE; clkmain->hw.init = &init; - clkmain->rate = rate; clkmain->pmc = pmc; clkmain->irq = irq; + clkmain->parent = !!(pmc_read(clkmain->pmc, AT91_CKGR_MOR) & + AT91_PMC_MOSCEN); init_waitqueue_head(&clkmain->wait); irq_set_status_flags(clkmain->irq, IRQ_NOAUTOEN); - ret = request_irq(clkmain->irq, clk_main_irq_handler, - IRQF_TRIGGER_HIGH, "clk-main", clkmain); + ret = request_irq(clkmain->irq, clk_sam9x5_main_irq_handler, + IRQF_TRIGGER_HIGH, name, clkmain); if (ret) return ERR_PTR(ret); @@ -155,33 +603,36 @@ at91_clk_register_main(struct at91_pmc *pmc, return clk; } - - -static void __init -of_at91_clk_main_setup(struct device_node *np, struct at91_pmc *pmc) +void __init of_at91sam9x5_clk_main_setup(struct device_node *np, + struct at91_pmc *pmc) { struct clk *clk; + const char *parent_names[2]; + int num_parents; unsigned int irq; - const char *parent_name; const char *name = np->name; - u32 rate = 0; + int i; + + num_parents = of_count_phandle_with_args(np, "clocks", "#clock-cells"); + if (num_parents <= 0 || num_parents > 2) + return; + + for (i = 0; i < num_parents; ++i) { + parent_names[i] = of_clk_get_parent_name(np, i); + if (!parent_names[i]) + return; + } - parent_name = of_clk_get_parent_name(np, 0); of_property_read_string(np, "clock-output-names", &name); - of_property_read_u32(np, "clock-frequency", &rate); + irq = irq_of_parse_and_map(np, 0); if (!irq) return; - clk = at91_clk_register_main(pmc, irq, name, parent_name, rate); + clk = at91_clk_register_sam9x5_main(pmc, irq, name, parent_names, + num_parents); if (IS_ERR(clk)) return; of_clk_add_provider(np, of_clk_src_simple_get, clk); } - -void __init of_at91rm9200_clk_main_setup(struct device_node *np, - struct at91_pmc *pmc) -{ - of_at91_clk_main_setup(np, pmc); -} diff --git a/drivers/clk/at91/pmc.c b/drivers/clk/at91/pmc.c index 6a61477a57e0..dc5fdde98e1a 100644 --- a/drivers/clk/at91/pmc.c +++ b/drivers/clk/at91/pmc.c @@ -230,10 +230,22 @@ out_free_pmc: static const struct of_device_id pmc_clk_ids[] __initconst = { /* Main clock */ + { + .compatible = "atmel,at91rm9200-clk-main-osc", + .data = of_at91rm9200_clk_main_osc_setup, + }, + { + .compatible = "atmel,at91sam9x5-clk-main-rc-osc", + .data = of_at91sam9x5_clk_main_rc_osc_setup, + }, { .compatible = "atmel,at91rm9200-clk-main", .data = of_at91rm9200_clk_main_setup, }, + { + .compatible = "atmel,at91sam9x5-clk-main", + .data = of_at91sam9x5_clk_main_setup, + }, /* PLL clocks */ { .compatible = "atmel,at91rm9200-clk-pll", diff --git a/drivers/clk/at91/pmc.h b/drivers/clk/at91/pmc.h index 441350983ccb..42cc7cc5e1d3 100644 --- a/drivers/clk/at91/pmc.h +++ b/drivers/clk/at91/pmc.h @@ -58,8 +58,14 @@ static inline void pmc_write(struct at91_pmc *pmc, int offset, u32 value) int of_at91_get_clk_range(struct device_node *np, const char *propname, struct clk_range *range); +extern void __init of_at91rm9200_clk_main_osc_setup(struct device_node *np, + struct at91_pmc *pmc); +extern void __init of_at91sam9x5_clk_main_rc_osc_setup(struct device_node *np, + struct at91_pmc *pmc); extern void __init of_at91rm9200_clk_main_setup(struct device_node *np, struct at91_pmc *pmc); +extern void __init of_at91sam9x5_clk_main_setup(struct device_node *np, + struct at91_pmc *pmc); extern void __init of_at91rm9200_clk_pll_setup(struct device_node *np, struct at91_pmc *pmc); From f9e1716f919f1bce2749a3ec15f34759ded0a56d Mon Sep 17 00:00:00 2001 From: Boris BREZILLON Date: Tue, 22 Apr 2014 15:12:31 +0200 Subject: [PATCH 04/28] clk: at91: update main clk documentation Update main clk documentation to match main clk implementation rework. Signed-off-by: Boris BREZILLON Acked-by: Mike Turquette Signed-off-by: Nicolas Ferre --- .../devicetree/bindings/clock/at91-clock.txt | 56 ++++++++++++++++--- 1 file changed, 47 insertions(+), 9 deletions(-) diff --git a/Documentation/devicetree/bindings/clock/at91-clock.txt b/Documentation/devicetree/bindings/clock/at91-clock.txt index cd5e23912888..26d2c8408064 100644 --- a/Documentation/devicetree/bindings/clock/at91-clock.txt +++ b/Documentation/devicetree/bindings/clock/at91-clock.txt @@ -15,8 +15,13 @@ Required properties: All at91 specific clocks (clocks defined below) must be child node of the PMC node. + "atmel,at91rm9200-clk-main-osc" + "atmel,at91sam9x5-clk-main-rc-osc" + at91 main clk sources + + "atmel,at91sam9x5-clk-main" "atmel,at91rm9200-clk-main": - at91 main oscillator + at91 main clock "atmel,at91rm9200-clk-master" or "atmel,at91sam9x5-clk-master": @@ -85,24 +90,57 @@ For example: /* put at91 clocks here */ }; +Required properties for main clock internal RC oscillator: +- interrupt-parent : must reference the PMC node. +- interrupts : shall be set to "<0>". +- clock-frequency : define the internal RC oscillator frequency. + +Optional properties: +- clock-accuracy : define the internal RC oscillator accuracy. + +For example: + main_rc_osc: main_rc_osc { + compatible = "atmel,at91sam9x5-clk-main-rc-osc"; + interrupt-parent = <&pmc>; + interrupts = <0>; + clock-frequency = <12000000>; + clock-accuracy = <50000000>; + }; + +Required properties for main clock oscillator: +- interrupt-parent : must reference the PMC node. +- interrupts : shall be set to "<0>". +- #clock-cells : from common clock binding; shall be set to 0. +- clocks : shall encode the main osc source clk sources (see atmel datasheet). + +Optional properties: +- atmel,osc-bypass : boolean property. Specified if a clock signal is provided + on XIN. + + clock signal is directly provided on XIN pin. + +For example: + main_osc: main_osc { + compatible = "atmel,at91rm9200-clk-main-osc"; + interrupt-parent = <&pmc>; + interrupts = <0>; + #clock-cells = <0>; + clocks = <&main_xtal>; + }; + Required properties for main clock: - interrupt-parent : must reference the PMC node. - interrupts : shall be set to "<0>". - #clock-cells : from common clock binding; shall be set to 0. -- clocks (optional if clock-frequency is provided) : shall be the slow clock - phandle. This clock is used to calculate the main clock rate if - "clock-frequency" is not provided. -- clock-frequency : the main oscillator frequency.Prefer the use of - "clock-frequency" over automatic clock rate calculation. +- clocks : shall encode the main clk sources (see atmel datasheet). For example: main: mainck { - compatible = "atmel,at91rm9200-clk-main"; + compatible = "atmel,at91sam9x5-clk-main"; interrupt-parent = <&pmc>; interrupts = <0>; #clock-cells = <0>; - clocks = <&ck32k>; - clock-frequency = <18432000>; + clocks = <&main_rc_osc &main_osc>; }; Required properties for master clock: From 80eded6ce8bb8bade60955660c6957d6166c44c1 Mon Sep 17 00:00:00 2001 From: Boris BREZILLON Date: Wed, 7 May 2014 18:02:15 +0200 Subject: [PATCH 05/28] clk: at91: add slow clks driver AT91 slow clk is a clk multiplexer. In some SoCs (sam9x5, sama5, sam9g45 families) this multiplexer can choose among 2 sources: an internal RC oscillator circuit and an oscillator using an external crystal. In other Socs (sam9260 family) the multiplexer source is hardcoded with the OSCSEL signal. Signed-off-by: Boris BREZILLON Acked-by: Mike Turquette Signed-off-by: Nicolas Ferre --- drivers/clk/at91/Makefile | 4 +- drivers/clk/at91/clk-slow.c | 467 +++++++++++++++++++++++++++++++++++ drivers/clk/at91/pmc.c | 5 + drivers/clk/at91/pmc.h | 3 + drivers/clk/at91/sckc.c | 57 +++++ drivers/clk/at91/sckc.h | 22 ++ include/linux/clk/at91_pmc.h | 1 + 7 files changed, 557 insertions(+), 2 deletions(-) create mode 100644 drivers/clk/at91/clk-slow.c create mode 100644 drivers/clk/at91/sckc.c create mode 100644 drivers/clk/at91/sckc.h diff --git a/drivers/clk/at91/Makefile b/drivers/clk/at91/Makefile index 46c1d3d0d66b..4998aee59267 100644 --- a/drivers/clk/at91/Makefile +++ b/drivers/clk/at91/Makefile @@ -2,8 +2,8 @@ # Makefile for at91 specific clk # -obj-y += pmc.o -obj-y += clk-main.o clk-pll.o clk-plldiv.o clk-master.o +obj-y += pmc.o sckc.o +obj-y += clk-slow.o clk-main.o clk-pll.o clk-plldiv.o clk-master.o obj-y += clk-system.o clk-peripheral.o clk-programmable.o obj-$(CONFIG_HAVE_AT91_UTMI) += clk-utmi.o diff --git a/drivers/clk/at91/clk-slow.c b/drivers/clk/at91/clk-slow.c new file mode 100644 index 000000000000..0300c46ee247 --- /dev/null +++ b/drivers/clk/at91/clk-slow.c @@ -0,0 +1,467 @@ +/* + * drivers/clk/at91/clk-slow.c + * + * Copyright (C) 2013 Boris BREZILLON + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "pmc.h" +#include "sckc.h" + +#define SLOW_CLOCK_FREQ 32768 +#define SLOWCK_SW_CYCLES 5 +#define SLOWCK_SW_TIME_USEC ((SLOWCK_SW_CYCLES * USEC_PER_SEC) / \ + SLOW_CLOCK_FREQ) + +#define AT91_SCKC_CR 0x00 +#define AT91_SCKC_RCEN (1 << 0) +#define AT91_SCKC_OSC32EN (1 << 1) +#define AT91_SCKC_OSC32BYP (1 << 2) +#define AT91_SCKC_OSCSEL (1 << 3) + +struct clk_slow_osc { + struct clk_hw hw; + void __iomem *sckcr; + unsigned long startup_usec; +}; + +#define to_clk_slow_osc(hw) container_of(hw, struct clk_slow_osc, hw) + +struct clk_slow_rc_osc { + struct clk_hw hw; + void __iomem *sckcr; + unsigned long frequency; + unsigned long accuracy; + unsigned long startup_usec; +}; + +#define to_clk_slow_rc_osc(hw) container_of(hw, struct clk_slow_rc_osc, hw) + +struct clk_sam9260_slow { + struct clk_hw hw; + struct at91_pmc *pmc; +}; + +#define to_clk_sam9260_slow(hw) container_of(hw, struct clk_sam9260_slow, hw) + +struct clk_sam9x5_slow { + struct clk_hw hw; + void __iomem *sckcr; + u8 parent; +}; + +#define to_clk_sam9x5_slow(hw) container_of(hw, struct clk_sam9x5_slow, hw) + + +static int clk_slow_osc_prepare(struct clk_hw *hw) +{ + struct clk_slow_osc *osc = to_clk_slow_osc(hw); + void __iomem *sckcr = osc->sckcr; + u32 tmp = readl(sckcr); + + if (tmp & AT91_SCKC_OSC32BYP) + return 0; + + writel(tmp | AT91_SCKC_OSC32EN, sckcr); + + usleep_range(osc->startup_usec, osc->startup_usec + 1); + + return 0; +} + +static void clk_slow_osc_unprepare(struct clk_hw *hw) +{ + struct clk_slow_osc *osc = to_clk_slow_osc(hw); + void __iomem *sckcr = osc->sckcr; + u32 tmp = readl(sckcr); + + if (tmp & AT91_SCKC_OSC32BYP) + return; + + writel(tmp & ~AT91_SCKC_OSC32EN, sckcr); +} + +static int clk_slow_osc_is_prepared(struct clk_hw *hw) +{ + struct clk_slow_osc *osc = to_clk_slow_osc(hw); + void __iomem *sckcr = osc->sckcr; + u32 tmp = readl(sckcr); + + if (tmp & AT91_SCKC_OSC32BYP) + return 1; + + return !!(tmp & AT91_SCKC_OSC32EN); +} + +static const struct clk_ops slow_osc_ops = { + .prepare = clk_slow_osc_prepare, + .unprepare = clk_slow_osc_unprepare, + .is_prepared = clk_slow_osc_is_prepared, +}; + +static struct clk * __init +at91_clk_register_slow_osc(void __iomem *sckcr, + const char *name, + const char *parent_name, + unsigned long startup, + bool bypass) +{ + struct clk_slow_osc *osc; + struct clk *clk = NULL; + struct clk_init_data init; + + if (!sckcr || !name || !parent_name) + return ERR_PTR(-EINVAL); + + osc = kzalloc(sizeof(*osc), GFP_KERNEL); + if (!osc) + return ERR_PTR(-ENOMEM); + + init.name = name; + init.ops = &slow_osc_ops; + init.parent_names = &parent_name; + init.num_parents = 1; + init.flags = CLK_IGNORE_UNUSED; + + osc->hw.init = &init; + osc->sckcr = sckcr; + osc->startup_usec = startup; + + if (bypass) + writel((readl(sckcr) & ~AT91_SCKC_OSC32EN) | AT91_SCKC_OSC32BYP, + sckcr); + + clk = clk_register(NULL, &osc->hw); + if (IS_ERR(clk)) + kfree(osc); + + return clk; +} + +void __init of_at91sam9x5_clk_slow_osc_setup(struct device_node *np, + void __iomem *sckcr) +{ + struct clk *clk; + const char *parent_name; + const char *name = np->name; + u32 startup; + bool bypass; + + parent_name = of_clk_get_parent_name(np, 0); + of_property_read_string(np, "clock-output-names", &name); + of_property_read_u32(np, "atmel,startup-time-usec", &startup); + bypass = of_property_read_bool(np, "atmel,osc-bypass"); + + clk = at91_clk_register_slow_osc(sckcr, name, parent_name, startup, + bypass); + if (IS_ERR(clk)) + return; + + of_clk_add_provider(np, of_clk_src_simple_get, clk); +} + +static unsigned long clk_slow_rc_osc_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct clk_slow_rc_osc *osc = to_clk_slow_rc_osc(hw); + + return osc->frequency; +} + +static unsigned long clk_slow_rc_osc_recalc_accuracy(struct clk_hw *hw, + unsigned long parent_acc) +{ + struct clk_slow_rc_osc *osc = to_clk_slow_rc_osc(hw); + + return osc->accuracy; +} + +static int clk_slow_rc_osc_prepare(struct clk_hw *hw) +{ + struct clk_slow_rc_osc *osc = to_clk_slow_rc_osc(hw); + void __iomem *sckcr = osc->sckcr; + + writel(readl(sckcr) | AT91_SCKC_RCEN, sckcr); + + usleep_range(osc->startup_usec, osc->startup_usec + 1); + + return 0; +} + +static void clk_slow_rc_osc_unprepare(struct clk_hw *hw) +{ + struct clk_slow_rc_osc *osc = to_clk_slow_rc_osc(hw); + void __iomem *sckcr = osc->sckcr; + + writel(readl(sckcr) & ~AT91_SCKC_RCEN, sckcr); +} + +static int clk_slow_rc_osc_is_prepared(struct clk_hw *hw) +{ + struct clk_slow_rc_osc *osc = to_clk_slow_rc_osc(hw); + + return !!(readl(osc->sckcr) & AT91_SCKC_RCEN); +} + +static const struct clk_ops slow_rc_osc_ops = { + .prepare = clk_slow_rc_osc_prepare, + .unprepare = clk_slow_rc_osc_unprepare, + .is_prepared = clk_slow_rc_osc_is_prepared, + .recalc_rate = clk_slow_rc_osc_recalc_rate, + .recalc_accuracy = clk_slow_rc_osc_recalc_accuracy, +}; + +static struct clk * __init +at91_clk_register_slow_rc_osc(void __iomem *sckcr, + const char *name, + unsigned long frequency, + unsigned long accuracy, + unsigned long startup) +{ + struct clk_slow_rc_osc *osc; + struct clk *clk = NULL; + struct clk_init_data init; + + if (!sckcr || !name) + return ERR_PTR(-EINVAL); + + osc = kzalloc(sizeof(*osc), GFP_KERNEL); + if (!osc) + return ERR_PTR(-ENOMEM); + + init.name = name; + init.ops = &slow_rc_osc_ops; + init.parent_names = NULL; + init.num_parents = 0; + init.flags = CLK_IS_ROOT | CLK_IGNORE_UNUSED; + + osc->hw.init = &init; + osc->sckcr = sckcr; + osc->frequency = frequency; + osc->accuracy = accuracy; + osc->startup_usec = startup; + + clk = clk_register(NULL, &osc->hw); + if (IS_ERR(clk)) + kfree(osc); + + return clk; +} + +void __init of_at91sam9x5_clk_slow_rc_osc_setup(struct device_node *np, + void __iomem *sckcr) +{ + struct clk *clk; + u32 frequency = 0; + u32 accuracy = 0; + u32 startup = 0; + const char *name = np->name; + + of_property_read_string(np, "clock-output-names", &name); + of_property_read_u32(np, "clock-frequency", &frequency); + of_property_read_u32(np, "clock-accuracy", &accuracy); + of_property_read_u32(np, "atmel,startup-time-usec", &startup); + + clk = at91_clk_register_slow_rc_osc(sckcr, name, frequency, accuracy, + startup); + if (IS_ERR(clk)) + return; + + of_clk_add_provider(np, of_clk_src_simple_get, clk); +} + +static int clk_sam9x5_slow_set_parent(struct clk_hw *hw, u8 index) +{ + struct clk_sam9x5_slow *slowck = to_clk_sam9x5_slow(hw); + void __iomem *sckcr = slowck->sckcr; + u32 tmp; + + if (index > 1) + return -EINVAL; + + tmp = readl(sckcr); + + if ((!index && !(tmp & AT91_SCKC_OSCSEL)) || + (index && (tmp & AT91_SCKC_OSCSEL))) + return 0; + + if (index) + tmp |= AT91_SCKC_OSCSEL; + else + tmp &= ~AT91_SCKC_OSCSEL; + + writel(tmp, sckcr); + + usleep_range(SLOWCK_SW_TIME_USEC, SLOWCK_SW_TIME_USEC + 1); + + return 0; +} + +static u8 clk_sam9x5_slow_get_parent(struct clk_hw *hw) +{ + struct clk_sam9x5_slow *slowck = to_clk_sam9x5_slow(hw); + + return !!(readl(slowck->sckcr) & AT91_SCKC_OSCSEL); +} + +static const struct clk_ops sam9x5_slow_ops = { + .set_parent = clk_sam9x5_slow_set_parent, + .get_parent = clk_sam9x5_slow_get_parent, +}; + +static struct clk * __init +at91_clk_register_sam9x5_slow(void __iomem *sckcr, + const char *name, + const char **parent_names, + int num_parents) +{ + struct clk_sam9x5_slow *slowck; + struct clk *clk = NULL; + struct clk_init_data init; + + if (!sckcr || !name || !parent_names || !num_parents) + return ERR_PTR(-EINVAL); + + slowck = kzalloc(sizeof(*slowck), GFP_KERNEL); + if (!slowck) + return ERR_PTR(-ENOMEM); + + init.name = name; + init.ops = &sam9x5_slow_ops; + init.parent_names = parent_names; + init.num_parents = num_parents; + init.flags = 0; + + slowck->hw.init = &init; + slowck->sckcr = sckcr; + slowck->parent = !!(readl(sckcr) & AT91_SCKC_OSCSEL); + + clk = clk_register(NULL, &slowck->hw); + if (IS_ERR(clk)) + kfree(slowck); + + return clk; +} + +void __init of_at91sam9x5_clk_slow_setup(struct device_node *np, + void __iomem *sckcr) +{ + struct clk *clk; + const char *parent_names[2]; + int num_parents; + const char *name = np->name; + int i; + + num_parents = of_count_phandle_with_args(np, "clocks", "#clock-cells"); + if (num_parents <= 0 || num_parents > 2) + return; + + for (i = 0; i < num_parents; ++i) { + parent_names[i] = of_clk_get_parent_name(np, i); + if (!parent_names[i]) + return; + } + + of_property_read_string(np, "clock-output-names", &name); + + clk = at91_clk_register_sam9x5_slow(sckcr, name, parent_names, + num_parents); + if (IS_ERR(clk)) + return; + + of_clk_add_provider(np, of_clk_src_simple_get, clk); +} + +static u8 clk_sam9260_slow_get_parent(struct clk_hw *hw) +{ + struct clk_sam9260_slow *slowck = to_clk_sam9260_slow(hw); + + return !!(pmc_read(slowck->pmc, AT91_PMC_SR) & AT91_PMC_OSCSEL); +} + +static const struct clk_ops sam9260_slow_ops = { + .get_parent = clk_sam9260_slow_get_parent, +}; + +static struct clk * __init +at91_clk_register_sam9260_slow(struct at91_pmc *pmc, + const char *name, + const char **parent_names, + int num_parents) +{ + struct clk_sam9260_slow *slowck; + struct clk *clk = NULL; + struct clk_init_data init; + + if (!pmc || !name) + return ERR_PTR(-EINVAL); + + if (!parent_names || !num_parents) + return ERR_PTR(-EINVAL); + + slowck = kzalloc(sizeof(*slowck), GFP_KERNEL); + if (!slowck) + return ERR_PTR(-ENOMEM); + + init.name = name; + init.ops = &sam9260_slow_ops; + init.parent_names = parent_names; + init.num_parents = num_parents; + init.flags = 0; + + slowck->hw.init = &init; + slowck->pmc = pmc; + + clk = clk_register(NULL, &slowck->hw); + if (IS_ERR(clk)) + kfree(slowck); + + return clk; +} + +void __init of_at91sam9260_clk_slow_setup(struct device_node *np, + struct at91_pmc *pmc) +{ + struct clk *clk; + const char *parent_names[2]; + int num_parents; + const char *name = np->name; + int i; + + num_parents = of_count_phandle_with_args(np, "clocks", "#clock-cells"); + if (num_parents <= 0 || num_parents > 1) + return; + + for (i = 0; i < num_parents; ++i) { + parent_names[i] = of_clk_get_parent_name(np, i); + if (!parent_names[i]) + return; + } + + of_property_read_string(np, "clock-output-names", &name); + + clk = at91_clk_register_sam9260_slow(pmc, name, parent_names, + num_parents); + if (IS_ERR(clk)) + return; + + of_clk_add_provider(np, of_clk_src_simple_get, clk); +} diff --git a/drivers/clk/at91/pmc.c b/drivers/clk/at91/pmc.c index dc5fdde98e1a..524196bb35a5 100644 --- a/drivers/clk/at91/pmc.c +++ b/drivers/clk/at91/pmc.c @@ -229,6 +229,11 @@ out_free_pmc: } static const struct of_device_id pmc_clk_ids[] __initconst = { + /* Slow oscillator */ + { + .compatible = "atmel,at91sam9260-clk-slow", + .data = of_at91sam9260_clk_slow_setup, + }, /* Main clock */ { .compatible = "atmel,at91rm9200-clk-main-osc", diff --git a/drivers/clk/at91/pmc.h b/drivers/clk/at91/pmc.h index 42cc7cc5e1d3..6c7625976113 100644 --- a/drivers/clk/at91/pmc.h +++ b/drivers/clk/at91/pmc.h @@ -58,6 +58,9 @@ static inline void pmc_write(struct at91_pmc *pmc, int offset, u32 value) int of_at91_get_clk_range(struct device_node *np, const char *propname, struct clk_range *range); +extern void __init of_at91sam9260_clk_slow_setup(struct device_node *np, + struct at91_pmc *pmc); + extern void __init of_at91rm9200_clk_main_osc_setup(struct device_node *np, struct at91_pmc *pmc); extern void __init of_at91sam9x5_clk_main_rc_osc_setup(struct device_node *np, diff --git a/drivers/clk/at91/sckc.c b/drivers/clk/at91/sckc.c new file mode 100644 index 000000000000..1184d76a7ab7 --- /dev/null +++ b/drivers/clk/at91/sckc.c @@ -0,0 +1,57 @@ +/* + * drivers/clk/at91/sckc.c + * + * Copyright (C) 2013 Boris BREZILLON + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + */ + +#include +#include +#include +#include +#include + +#include "sckc.h" + +static const struct of_device_id sckc_clk_ids[] __initconst = { + /* Slow clock */ + { + .compatible = "atmel,at91sam9x5-clk-slow-osc", + .data = of_at91sam9x5_clk_slow_osc_setup, + }, + { + .compatible = "atmel,at91sam9x5-clk-slow-rc-osc", + .data = of_at91sam9x5_clk_slow_rc_osc_setup, + }, + { + .compatible = "atmel,at91sam9x5-clk-slow", + .data = of_at91sam9x5_clk_slow_setup, + }, + { /*sentinel*/ } +}; + +static void __init of_at91sam9x5_sckc_setup(struct device_node *np) +{ + struct device_node *childnp; + void (*clk_setup)(struct device_node *, void __iomem *); + const struct of_device_id *clk_id; + void __iomem *regbase = of_iomap(np, 0); + + if (!regbase) + return; + + for_each_child_of_node(np, childnp) { + clk_id = of_match_node(sckc_clk_ids, childnp); + if (!clk_id) + continue; + clk_setup = clk_id->data; + clk_setup(childnp, regbase); + } +} +CLK_OF_DECLARE(at91sam9x5_clk_sckc, "atmel,at91sam9x5-sckc", + of_at91sam9x5_sckc_setup); diff --git a/drivers/clk/at91/sckc.h b/drivers/clk/at91/sckc.h new file mode 100644 index 000000000000..836fcf59820f --- /dev/null +++ b/drivers/clk/at91/sckc.h @@ -0,0 +1,22 @@ +/* + * drivers/clk/at91/sckc.h + * + * Copyright (C) 2013 Boris BREZILLON + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef __AT91_SCKC_H_ +#define __AT91_SCKC_H_ + +extern void __init of_at91sam9x5_clk_slow_osc_setup(struct device_node *np, + void __iomem *sckcr); +extern void __init of_at91sam9x5_clk_slow_rc_osc_setup(struct device_node *np, + void __iomem *sckcr); +extern void __init of_at91sam9x5_clk_slow_setup(struct device_node *np, + void __iomem *sckcr); + +#endif /* __AT91_SCKC_H_ */ diff --git a/include/linux/clk/at91_pmc.h b/include/linux/clk/at91_pmc.h index a6911ebbd02a..de4268d4987a 100644 --- a/include/linux/clk/at91_pmc.h +++ b/include/linux/clk/at91_pmc.h @@ -155,6 +155,7 @@ extern void __iomem *at91_pmc_base; #define AT91_PMC_LOCKB (1 << 2) /* PLLB Lock */ #define AT91_PMC_MCKRDY (1 << 3) /* Master Clock */ #define AT91_PMC_LOCKU (1 << 6) /* UPLL Lock [some SAM9] */ +#define AT91_PMC_OSCSEL (1 << 7) /* Slow Oscillator Selection [some SAM9] */ #define AT91_PMC_PCK0RDY (1 << 8) /* Programmable Clock 0 */ #define AT91_PMC_PCK1RDY (1 << 9) /* Programmable Clock 1 */ #define AT91_PMC_PCK2RDY (1 << 10) /* Programmable Clock 2 */ From 4d735e548cdf6e8d92849a6dac2b4d5a9d2145f3 Mon Sep 17 00:00:00 2001 From: Boris BREZILLON Date: Tue, 22 Apr 2014 15:12:33 +0200 Subject: [PATCH 06/28] clk: at91: add slow clk documentation Add slow clk, and slow oscillators documentation. Signed-off-by: Boris BREZILLON Acked-by: Mike Turquette Signed-off-by: Nicolas Ferre --- .../devicetree/bindings/clock/at91-clock.txt | 72 +++++++++++++++++++ 1 file changed, 72 insertions(+) diff --git a/Documentation/devicetree/bindings/clock/at91-clock.txt b/Documentation/devicetree/bindings/clock/at91-clock.txt index 26d2c8408064..27f9a27bb754 100644 --- a/Documentation/devicetree/bindings/clock/at91-clock.txt +++ b/Documentation/devicetree/bindings/clock/at91-clock.txt @@ -6,6 +6,16 @@ This binding uses the common clock binding[1]. Required properties: - compatible : shall be one of the following: + "atmel,at91sam9x5-sckc": + at91 SCKC (Slow Clock Controller) + This node contains the slow clock definitions. + + "atmel,at91sam9x5-clk-slow-osc": + at91 slow oscillator + + "atmel,at91sam9x5-clk-slow-rc-osc": + at91 internal slow RC oscillator + "atmel,at91rm9200-pmc" or "atmel,at91sam9g45-pmc" or "atmel,at91sam9n12-pmc" or @@ -15,6 +25,11 @@ Required properties: All at91 specific clocks (clocks defined below) must be child node of the PMC node. + "atmel,at91sam9x5-clk-slow" (under sckc node) + or + "atmel,at91sam9260-clk-slow" (under pmc node): + at91 slow clk + "atmel,at91rm9200-clk-main-osc" "atmel,at91sam9x5-clk-main-rc-osc" at91 main clk sources @@ -59,6 +74,63 @@ Required properties: "atmel,at91sam9x5-clk-utmi": at91 utmi clock +Required properties for SCKC node: +- reg : defines the IO memory reserved for the SCKC. +- #size-cells : shall be 0 (reg is used to encode clk id). +- #address-cells : shall be 1 (reg is used to encode clk id). + + +For example: + sckc: sckc@fffffe50 { + compatible = "atmel,sama5d3-pmc"; + reg = <0xfffffe50 0x4> + #size-cells = <0>; + #address-cells = <1>; + + /* put at91 slow clocks here */ + }; + + +Required properties for internal slow RC oscillator: +- #clock-cells : from common clock binding; shall be set to 0. +- clock-frequency : define the internal RC oscillator frequency. + +Optional properties: +- clock-accuracy : define the internal RC oscillator accuracy. + +For example: + slow_rc_osc: slow_rc_osc { + compatible = "atmel,at91sam9x5-clk-slow-rc-osc"; + clock-frequency = <32768>; + clock-accuracy = <50000000>; + }; + +Required properties for slow oscillator: +- #clock-cells : from common clock binding; shall be set to 0. +- clocks : shall encode the main osc source clk sources (see atmel datasheet). + +Optional properties: +- atmel,osc-bypass : boolean property. Set this when a clock signal is directly + provided on XIN. + +For example: + slow_osc: slow_osc { + compatible = "atmel,at91rm9200-clk-slow-osc"; + #clock-cells = <0>; + clocks = <&slow_xtal>; + }; + +Required properties for slow clock: +- #clock-cells : from common clock binding; shall be set to 0. +- clocks : shall encode the slow clk sources (see atmel datasheet). + +For example: + clk32k: slck { + compatible = "atmel,at91sam9x5-clk-slow"; + #clock-cells = <0>; + clocks = <&slow_rc_osc &slow_osc>; + }; + Required properties for PMC node: - reg : defines the IO memory reserved for the PMC. - #size-cells : shall be 0 (reg is used to encode clk id). From 4753219dd3df5cc069336ff419c06c2a1e84ca5d Mon Sep 17 00:00:00 2001 From: Boris BREZILLON Date: Tue, 22 Apr 2014 15:12:34 +0200 Subject: [PATCH 07/28] ARM: at91/dt: move sama5d3 SoC to the new main/slow clk model Replace the old main and clk definitions (fixed rate clk) by the new main and slow clk subtree definition (ck = mux(rc_osc, osc)). Signed-off-by: Boris BREZILLON Signed-off-by: Nicolas Ferre --- arch/arm/boot/dts/sama5d3.dtsi | 61 ++++++++++++++++++++++++++++++---- 1 file changed, 55 insertions(+), 6 deletions(-) diff --git a/arch/arm/boot/dts/sama5d3.dtsi b/arch/arm/boot/dts/sama5d3.dtsi index eabcfdbb403a..ceb274f24dbf 100644 --- a/arch/arm/boot/dts/sama5d3.dtsi +++ b/arch/arm/boot/dts/sama5d3.dtsi @@ -58,6 +58,18 @@ reg = <0x20000000 0x8000000>; }; + slow_xtal: slow_xtal { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <0>; + }; + + main_xtal: main_xtal { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <0>; + }; + clocks { adc_op_clk: adc_op_clk{ compatible = "fixed-clock"; @@ -749,18 +761,29 @@ #size-cells = <0>; #interrupt-cells = <1>; - clk32k: slck { - compatible = "fixed-clock"; + main_rc_osc: main_rc_osc { + compatible = "atmel,at91sam9x5-clk-main-rc-osc"; #clock-cells = <0>; - clock-frequency = <32768>; + interrupt-parent = <&pmc>; + interrupts = ; + clock-frequency = <12000000>; + clock-accuracy = <50000000>; }; - main: mainck { - compatible = "atmel,at91rm9200-clk-main"; + main_osc: main_osc { + compatible = "atmel,at91rm9200-clk-main-osc"; #clock-cells = <0>; interrupt-parent = <&pmc>; interrupts = ; - clocks = <&clk32k>; + clocks = <&main_xtal>; + }; + + main: mainck { + compatible = "atmel,at91sam9x5-clk-main"; + #clock-cells = <0>; + interrupt-parent = <&pmc>; + interrupts = ; + clocks = <&main_rc_osc &main_osc>; }; plla: pllack { @@ -1089,6 +1112,32 @@ status = "disabled"; }; + sckc@fffffe50 { + compatible = "atmel,at91sam9x5-sckc"; + reg = <0xfffffe50 0x4>; + + slow_rc_osc: slow_rc_osc { + compatible = "atmel,at91sam9x5-clk-slow-rc-osc"; + #clock-cells = <0>; + clock-frequency = <32768>; + clock-accuracy = <50000000>; + atmel,startup-time-usec = <75>; + }; + + slow_osc: slow_osc { + compatible = "atmel,at91sam9x5-clk-slow-osc"; + #clock-cells = <0>; + clocks = <&slow_xtal>; + atmel,startup-time-usec = <1200000>; + }; + + clk32k: slowck { + compatible = "atmel,at91sam9x5-clk-slow"; + #clock-cells = <0>; + clocks = <&slow_rc_osc &slow_osc>; + }; + }; + rtc@fffffeb0 { compatible = "atmel,at91rm9200-rtc"; reg = <0xfffffeb0 0x30>; From 221bfd054c944307f227c586c95e082495c06b2f Mon Sep 17 00:00:00 2001 From: Boris BREZILLON Date: Tue, 22 Apr 2014 15:12:35 +0200 Subject: [PATCH 08/28] ARM: at91/dt: add xtal frequencies to sama5d3xcm boards Define crystal frequencies of sama5d3xcm boards. Signed-off-by: Boris BREZILLON Signed-off-by: Nicolas Ferre --- arch/arm/boot/dts/sama5d3xcm.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm/boot/dts/sama5d3xcm.dtsi b/arch/arm/boot/dts/sama5d3xcm.dtsi index f55ed072c8e6..b0b1331c1974 100644 --- a/arch/arm/boot/dts/sama5d3xcm.dtsi +++ b/arch/arm/boot/dts/sama5d3xcm.dtsi @@ -18,6 +18,14 @@ reg = <0x20000000 0x20000000>; }; + slow_xtal { + clock-frequency = <32768>; + }; + + main_xtal { + clock-frequency = <12000000>; + }; + ahb { apb { spi0: spi@f0004000 { From 58a5c3d896811183efac043dd56c0eeb46d92b49 Mon Sep 17 00:00:00 2001 From: Boris BREZILLON Date: Tue, 22 Apr 2014 15:12:36 +0200 Subject: [PATCH 09/28] ARM: at91/dt: add xtal frequencies to sama5d3 xplained board Define crystal properties of sama5d3 xplained board. Signed-off-by: Boris BREZILLON Signed-off-by: Nicolas Ferre --- arch/arm/boot/dts/at91-sama5d3_xplained.dts | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm/boot/dts/at91-sama5d3_xplained.dts b/arch/arm/boot/dts/at91-sama5d3_xplained.dts index ce1375595e5f..f1a11193fba2 100644 --- a/arch/arm/boot/dts/at91-sama5d3_xplained.dts +++ b/arch/arm/boot/dts/at91-sama5d3_xplained.dts @@ -21,6 +21,14 @@ reg = <0x20000000 0x10000000>; }; + slow_xtal { + clock-frequency = <32768>; + }; + + main_xtal { + clock-frequency = <12000000>; + }; + ahb { apb { mmc0: mmc@f0000000 { From 884fb7d07be2927293f7fd6a241a4b9723a0a839 Mon Sep 17 00:00:00 2001 From: Boris BREZILLON Date: Tue, 22 Apr 2014 15:12:37 +0200 Subject: [PATCH 10/28] ARM: at91/dt: move at91sam9261 SoC to the new main clock model Signed-off-by: Boris BREZILLON Acked-by: Jean-Jacques HIBLOT Signed-off-by: Nicolas Ferre --- arch/arm/boot/dts/at91sam9261.dtsi | 23 +++++++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/at91sam9261.dtsi b/arch/arm/boot/dts/at91sam9261.dtsi index e21dda0e8986..561addceb81e 100644 --- a/arch/arm/boot/dts/at91sam9261.dtsi +++ b/arch/arm/boot/dts/at91sam9261.dtsi @@ -45,6 +45,18 @@ reg = <0x20000000 0x08000000>; }; + main_xtal: main_xtal { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <0>; + }; + + slow_xtal: slow_xtal { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <0>; + }; + ahb { compatible = "simple-bus"; #address-cells = <1>; @@ -524,17 +536,24 @@ #size-cells = <0>; #interrupt-cells = <1>; - clk32k: slck { + slow_rc_osc: slow_rc_osc { compatible = "fixed-clock"; #clock-cells = <0>; clock-frequency = <32768>; + clock-accuracy = <50000000>; + }; + + clk32k: slck { + compatible = "atmel,at91sam9260-clk-slow"; + #clock-cells = <0>; + clocks = <&slow_rc_osc &slow_xtal>; }; main: mainck { compatible = "atmel,at91rm9200-clk-main"; #clock-cells = <0>; interrupts-extended = <&pmc AT91_PMC_MOSCS>; - clocks = <&clk32k>; + clocks = <&main_xtal>; }; plla: pllack { From b6170645bde58c82ae0965ea4052f105f3395e05 Mon Sep 17 00:00:00 2001 From: Boris BREZILLON Date: Tue, 22 Apr 2014 15:12:38 +0200 Subject: [PATCH 11/28] ARM: at91/dt: define main xtal frequency of the at91sam9261ek board Define at91sam9261ek main crystal frequency. Signed-off-by: Boris BREZILLON Acked-by: Jean-Jacques HIBLOT Signed-off-by: Nicolas Ferre --- arch/arm/boot/dts/at91sam9261ek.dts | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm/boot/dts/at91sam9261ek.dts b/arch/arm/boot/dts/at91sam9261ek.dts index 2ce527e70c7a..c6683ea8b743 100644 --- a/arch/arm/boot/dts/at91sam9261ek.dts +++ b/arch/arm/boot/dts/at91sam9261ek.dts @@ -20,6 +20,10 @@ reg = <0x20000000 0x4000000>; }; + main_xtal { + clock-frequency = <18432000>; + }; + clocks { #address-cells = <1>; #size-cells = <1>; From 2078da966ff16961a631681164267903bd32a9b3 Mon Sep 17 00:00:00 2001 From: Boris BREZILLON Date: Tue, 22 Apr 2014 15:12:39 +0200 Subject: [PATCH 12/28] ARM: at91/dt: move at91sam9rl SoC to the new slow/main clock models Move at91sam9rl SoC to the new main/slow clock model. Signed-off-by: Boris BREZILLON Acked-by: Alexandre Belloni Signed-off-by: Nicolas Ferre --- arch/arm/boot/dts/at91sam9rl.dtsi | 46 ++++++++++++++++++++++++++----- 1 file changed, 39 insertions(+), 7 deletions(-) diff --git a/arch/arm/boot/dts/at91sam9rl.dtsi b/arch/arm/boot/dts/at91sam9rl.dtsi index 63e1784d272c..a19a7c26a7fc 100644 --- a/arch/arm/boot/dts/at91sam9rl.dtsi +++ b/arch/arm/boot/dts/at91sam9rl.dtsi @@ -48,6 +48,18 @@ reg = <0x20000000 0x04000000>; }; + slow_xtal: slow_xtal { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <0>; + }; + + main_xtal: main_xtal { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <0>; + }; + ahb { compatible = "simple-bus"; #address-cells = <1>; @@ -548,17 +560,11 @@ #size-cells = <0>; #interrupt-cells = <1>; - clk32k: slck { - compatible = "fixed-clock"; - #clock-cells = <0>; - clock-frequency = <32768>; - }; - main: mainck { compatible = "atmel,at91rm9200-clk-main"; #clock-cells = <0>; interrupts-extended = <&pmc AT91_PMC_MOSCS>; - clocks = <&clk32k>; + clocks = <&main_xtal>; }; plla: pllack { @@ -769,6 +775,32 @@ interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>; status = "disabled"; }; + + sckc@fffffd50 { + compatible = "atmel,at91sam9x5-sckc"; + reg = <0xfffffd50 0x4>; + + slow_osc: slow_osc { + compatible = "atmel,at91sam9x5-clk-slow-osc"; + #clock-cells = <0>; + atmel,startup-time-usec = <1200000>; + clocks = <&slow_xtal>; + }; + + slow_rc_osc: slow_rc_osc { + compatible = "atmel,at91sam9x5-clk-slow-rc-osc"; + #clock-cells = <0>; + atmel,startup-time-usec = <75>; + clock-frequency = <32768>; + clock-accuracy = <50000000>; + }; + + clk32k: slck { + compatible = "atmel,at91sam9x5-clk-slow"; + #clock-cells = <0>; + clocks = <&slow_rc_osc &slow_osc>; + }; + }; }; }; From 6730fefd8ec75be7f9ac6100767792ab75b6e0de Mon Sep 17 00:00:00 2001 From: Boris BREZILLON Date: Tue, 22 Apr 2014 15:12:40 +0200 Subject: [PATCH 13/28] ARM: at91/dt: define sam9rlek crystal frequencies Define at91sam9rlek crystal frequencies. Signed-off-by: Boris BREZILLON Acked-by: Alexandre Belloni Signed-off-by: Nicolas Ferre --- arch/arm/boot/dts/at91sam9rlek.dts | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm/boot/dts/at91sam9rlek.dts b/arch/arm/boot/dts/at91sam9rlek.dts index cddb37825fad..b3b89baf972e 100644 --- a/arch/arm/boot/dts/at91sam9rlek.dts +++ b/arch/arm/boot/dts/at91sam9rlek.dts @@ -20,6 +20,15 @@ reg = <0x20000000 0x4000000>; }; + + slow_xtal { + clock-frequency = <32768>; + }; + + main_xtal { + clock-frequency = <12000000>; + }; + clocks { #address-cells = <1>; #size-cells = <1>; From 616a28eda7fe5e41ff71f2aad115fb9d36f62457 Mon Sep 17 00:00:00 2001 From: Alexandre Belloni Date: Tue, 15 Apr 2014 12:27:56 +0200 Subject: [PATCH 14/28] ARM: at91: sam9g45: remove unused platform_data num_channels and registers are not used anymore since they are defined inside the at91_adc driver and assigned by matching the id_table. Also, remove the mach/at91_adc.h include that is not necessary anymore. Signed-off-by: Alexandre Belloni Acked-by: Jonathan Cameron Signed-off-by: Nicolas Ferre --- arch/arm/mach-at91/at91sam9g45_devices.c | 10 ---------- 1 file changed, 10 deletions(-) diff --git a/arch/arm/mach-at91/at91sam9g45_devices.c b/arch/arm/mach-at91/at91sam9g45_devices.c index 7f02a5366a31..eb06348de330 100644 --- a/arch/arm/mach-at91/at91sam9g45_devices.c +++ b/arch/arm/mach-at91/at91sam9g45_devices.c @@ -25,7 +25,6 @@ #include #include