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mvebu: preliminary 3.19 support

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Signed-off-by: Imre Kaloz <kaloz@openwrt.org>

SVN-Revision: 44130
master
Imre Kaloz 10 years ago
parent d9c6ff8c25
commit 18012a4198
13 changed files with 1836 additions and 0 deletions
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  1. 344
      target/linux/mvebu/config-3.19
  2. 10
      target/linux/mvebu/patches-3.19/001-build_mamba_dts.patch
  3. 51
      target/linux/mvebu/patches-3.19/050-leds_tlc59116_document_binding.patch
  4. 297
      target/linux/mvebu/patches-3.19/051-leds_tlc59116_add_driver.patch
  5. 153
      target/linux/mvebu/patches-3.19/100-find_active_root.patch
  6. 15
      target/linux/mvebu/patches-3.19/102-revert_i2c_delay.patch
  7. 223
      target/linux/mvebu/patches-3.19/200-gpio_mvebu_checkpatch_fixes.patch
  8. 63
      target/linux/mvebu/patches-3.19/201-gpio_mvebu_fix_probe_cleanup_on_error.patch
  9. 433
      target/linux/mvebu/patches-3.19/202-gpio_mvebu_add_limited_pwm_support.patch
  10. 52
      target/linux/mvebu/patches-3.19/203-dt_bindings_extend_mvebu_gpio_documentation_with_pwm.patch
  11. 149
      target/linux/mvebu/patches-3.19/204-mvebu_xp_add_pwm_properties_to_dtsi_files.patch
  12. 18
      target/linux/mvebu/patches-3.19/205-arm_mvebu_enable_pwm_in_defconfig.patch
  13. 28
      target/linux/mvebu/patches-3.19/206-mvebu_wrt1900ac_use_pwm-fan_rather_than_gpio-fan.patch

344
target/linux/mvebu/config-3.19
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@ -0,0 +1,344 @@
CONFIG_ALIGNMENT_TRAP=y
CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE=y
CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE=y
CONFIG_ARCH_HAS_SG_CHAIN=y
CONFIG_ARCH_HAS_TICK_BROADCAST=y
CONFIG_ARCH_HAVE_CUSTOM_GPIO_H=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
CONFIG_ARCH_MULTIPLATFORM=y
# CONFIG_ARCH_MULTI_CPU_AUTO is not set
CONFIG_ARCH_MULTI_V6_V7=y
CONFIG_ARCH_MULTI_V7=y
CONFIG_ARCH_MVEBU=y
# CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED is not set
CONFIG_ARCH_NR_GPIO=0
CONFIG_ARCH_REQUIRE_GPIOLIB=y
# CONFIG_ARCH_SELECT_MEMORY_MODEL is not set
# CONFIG_ARCH_SPARSEMEM_DEFAULT is not set
CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
CONFIG_ARCH_SUPPORTS_BIG_ENDIAN=y
CONFIG_ARCH_SUPPORTS_UPROBES=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARCH_USE_BUILTIN_BSWAP=y
CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
CONFIG_ARM=y
CONFIG_ARMADA_370_CLK=y
CONFIG_ARMADA_370_XP_TIMER=y
CONFIG_ARMADA_38X_CLK=y
CONFIG_ARMADA_XP_CLK=y
CONFIG_ARM_APPENDED_DTB=y
CONFIG_ARM_ATAG_DTB_COMPAT=y
# CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND is not set
CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER=y
CONFIG_ARM_CPU_SUSPEND=y
CONFIG_ARM_ERRATA_720789=y
CONFIG_ARM_GIC=y
CONFIG_ARM_HAS_SG_CHAIN=y
# CONFIG_ARM_KIRKWOOD_CPUFREQ is not set
CONFIG_ARM_L1_CACHE_SHIFT=6
CONFIG_ARM_L1_CACHE_SHIFT_6=y
# CONFIG_ARM_LPAE is not set
CONFIG_ARM_MVEBU_V7_CPUIDLE=y
CONFIG_ARM_PATCH_PHYS_VIRT=y
CONFIG_ARM_THUMB=y
# CONFIG_ARM_THUMBEE is not set
CONFIG_ARM_VIRT_EXT=y
CONFIG_ASYNC_TX_ENABLE_CHANNEL_SWITCH=y
CONFIG_ATAGS=y
CONFIG_AUTO_ZRELADDR=y
CONFIG_BOUNCE=y
# CONFIG_CACHE_FEROCEON_L2 is not set
CONFIG_CACHE_L2X0=y
CONFIG_CACHE_PL310=y
CONFIG_CLKDEV_LOOKUP=y
CONFIG_CLKSRC_MMIO=y
CONFIG_CLKSRC_OF=y
CONFIG_CLONE_BACKWARDS=y
CONFIG_COMMON_CLK=y
CONFIG_CPUFREQ_DT=y
CONFIG_CPU_32v6K=y
CONFIG_CPU_32v7=y
CONFIG_CPU_ABRT_EV7=y
# CONFIG_CPU_BIG_ENDIAN is not set
# CONFIG_CPU_BPREDICT_DISABLE is not set
CONFIG_CPU_CACHE_V7=y
CONFIG_CPU_CACHE_VIPT=y
CONFIG_CPU_COPY_V6=y
CONFIG_CPU_CP15=y
CONFIG_CPU_CP15_MMU=y
CONFIG_CPU_FREQ=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
CONFIG_CPU_FREQ_GOV_COMMON=y
# CONFIG_CPU_FREQ_GOV_CONSERVATIVE is not set
CONFIG_CPU_FREQ_GOV_ONDEMAND=y
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
# CONFIG_CPU_FREQ_GOV_POWERSAVE is not set
# CONFIG_CPU_FREQ_GOV_USERSPACE is not set
CONFIG_CPU_FREQ_STAT=y
# CONFIG_CPU_FREQ_STAT_DETAILS is not set
CONFIG_CPU_HAS_ASID=y
# CONFIG_CPU_ICACHE_DISABLE is not set
CONFIG_CPU_IDLE=y
CONFIG_CPU_IDLE_GOV_LADDER=y
CONFIG_CPU_PABRT_V7=y
CONFIG_CPU_PJ4B=y
CONFIG_CPU_PM=y
CONFIG_CPU_RMAP=y
# CONFIG_CPU_THERMAL is not set
CONFIG_CPU_TLB_V7=y
CONFIG_CPU_V7=y
CONFIG_CRC16=y
CONFIG_CRYPTO_DEFLATE=y
CONFIG_CRYPTO_LZO=y
CONFIG_CRYPTO_XZ=y
CONFIG_DCACHE_WORD_ACCESS=y
CONFIG_DEBUG_INFO=y
CONFIG_DEBUG_LL=y
CONFIG_DEBUG_LL_INCLUDE="debug/8250.S"
CONFIG_DEBUG_MVEBU_UART=y
# CONFIG_DEBUG_MVEBU_UART_ALTERNATE is not set
CONFIG_DEBUG_UART_8250=y
# CONFIG_DEBUG_UART_8250_FLOW_CONTROL is not set
CONFIG_DEBUG_UART_8250_SHIFT=2
# CONFIG_DEBUG_UART_8250_WORD is not set
CONFIG_DEBUG_UART_PHYS=0xd0012000
# CONFIG_DEBUG_UART_PL01X is not set
CONFIG_DEBUG_UART_VIRT=0xfec12000
CONFIG_DEBUG_UNCOMPRESS=y
CONFIG_DEBUG_USER=y
CONFIG_DMADEVICES=y
CONFIG_DMA_ENGINE=y
CONFIG_DMA_ENGINE_RAID=y
CONFIG_DMA_OF=y
CONFIG_DTC=y
# CONFIG_DW_DMAC_CORE is not set
# CONFIG_DW_DMAC_PCI is not set
CONFIG_EARLY_PRINTK=y
CONFIG_FIXED_PHY=y
CONFIG_FRAME_POINTER=y
CONFIG_GENERIC_ALLOCATOR=y
CONFIG_GENERIC_BUG=y
CONFIG_GENERIC_CLOCKEVENTS=y
CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y
CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
CONFIG_GENERIC_IDLE_POLL_SETUP=y
CONFIG_GENERIC_IO=y
CONFIG_GENERIC_IRQ_CHIP=y
CONFIG_GENERIC_IRQ_SHOW=y
CONFIG_GENERIC_PCI_IOMAP=y
CONFIG_GENERIC_SCHED_CLOCK=y
CONFIG_GENERIC_SMP_IDLE_THREAD=y
CONFIG_GENERIC_STRNCPY_FROM_USER=y
CONFIG_GENERIC_STRNLEN_USER=y
CONFIG_GPIOLIB=y
CONFIG_GPIO_DEVRES=y
CONFIG_GPIO_GENERIC=y
CONFIG_GPIO_MVEBU=y
CONFIG_GPIO_MVEBU_PWM=y
CONFIG_GPIO_SYSFS=y
CONFIG_HANDLE_DOMAIN_IRQ=y
CONFIG_HARDIRQS_SW_RESEND=y
CONFIG_HAS_DMA=y
CONFIG_HAS_IOMEM=y
CONFIG_HAS_IOPORT_MAP=y
# CONFIG_HAVE_64BIT_ALIGNED_ACCESS is not set
CONFIG_HAVE_ARCH_AUDITSYSCALL=y
CONFIG_HAVE_ARCH_JUMP_LABEL=y
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_HAVE_ARCH_PFN_VALID=y
CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
CONFIG_HAVE_ARCH_TRACEHOOK=y
CONFIG_HAVE_ARM_SCU=y
CONFIG_HAVE_ARM_TWD=y
# CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
CONFIG_HAVE_BPF_JIT=y
CONFIG_HAVE_CC_STACKPROTECTOR=y
CONFIG_HAVE_CLK=y
CONFIG_HAVE_CLK_PREPARE=y
CONFIG_HAVE_CONTEXT_TRACKING=y
CONFIG_HAVE_C_RECORDMCOUNT=y
CONFIG_HAVE_DEBUG_KMEMLEAK=y
CONFIG_HAVE_DMA_API_DEBUG=y
CONFIG_HAVE_DMA_ATTRS=y
CONFIG_HAVE_DMA_CONTIGUOUS=y
CONFIG_HAVE_DYNAMIC_FTRACE=y
CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
CONFIG_HAVE_FUNCTION_TRACER=y
CONFIG_HAVE_GENERIC_DMA_COHERENT=y
CONFIG_HAVE_IDE=y
CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
CONFIG_HAVE_KERNEL_GZIP=y
CONFIG_HAVE_KERNEL_LZ4=y
CONFIG_HAVE_KERNEL_LZMA=y
CONFIG_HAVE_KERNEL_LZO=y
CONFIG_HAVE_KERNEL_XZ=y
CONFIG_HAVE_MEMBLOCK=y
CONFIG_HAVE_NET_DSA=y
CONFIG_HAVE_OPROFILE=y
CONFIG_HAVE_PERF_EVENTS=y
CONFIG_HAVE_PERF_REGS=y
CONFIG_HAVE_PERF_USER_STACK_DUMP=y
CONFIG_HAVE_PROC_CPU=y
CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
CONFIG_HAVE_SMP=y
CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
CONFIG_HAVE_UID16=y
CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
CONFIG_HIGHMEM=y
# CONFIG_HIGHPTE is not set
CONFIG_HZ_FIXED=0
CONFIG_HZ_PERIODIC=y
CONFIG_INITRAMFS_SOURCE=""
CONFIG_IOMMU_HELPER=y
CONFIG_IRQCHIP=y
CONFIG_IRQ_DOMAIN=y
CONFIG_IRQ_DOMAIN_DEBUG=y
CONFIG_IRQ_FORCED_THREADING=y
CONFIG_IRQ_WORK=y
# CONFIG_IWMMXT is not set
CONFIG_KERNFS=y
CONFIG_LEDS_GPIO=y
CONFIG_LIBFDT=y
CONFIG_LOG_BUF_SHIFT=14
CONFIG_LZO_COMPRESS=y
CONFIG_LZO_DECOMPRESS=y
CONFIG_MACH_ARMADA_370=y
# CONFIG_MACH_ARMADA_375 is not set
CONFIG_MACH_ARMADA_38X=y
CONFIG_MACH_ARMADA_XP=y
# CONFIG_MACH_DOVE is not set
CONFIG_MACH_MVEBU_ANY=y
CONFIG_MACH_MVEBU_V7=y
CONFIG_MAGIC_SYSRQ=y
CONFIG_MARVELL_PHY=y
CONFIG_MDIO_BOARDINFO=y
CONFIG_MEMORY=y
CONFIG_MIGHT_HAVE_CACHE_L2X0=y
CONFIG_MIGHT_HAVE_PCI=y
CONFIG_MODULES_USE_ELF_REL=y
CONFIG_MTD_CFI_STAA=y
CONFIG_MTD_M25P80=y
CONFIG_MTD_NAND=y
CONFIG_MTD_NAND_ECC=y
CONFIG_MTD_NAND_PXA3xx=y
CONFIG_MTD_SPI_NOR=y
CONFIG_MTD_SPLIT_SUPPORT=y
CONFIG_MTD_UBI=y
CONFIG_MTD_UBI_BEB_LIMIT=20
CONFIG_MTD_UBI_BLOCK=y
# CONFIG_MTD_UBI_FASTMAP is not set
# CONFIG_MTD_UBI_GLUEBI is not set
CONFIG_MTD_UBI_WL_THRESHOLD=4096
CONFIG_MULTI_IRQ_HANDLER=y
CONFIG_MUTEX_SPIN_ON_OWNER=y
CONFIG_MVEBU_CLK_COMMON=y
CONFIG_MVEBU_CLK_COREDIV=y
CONFIG_MVEBU_CLK_CPU=y
CONFIG_MVEBU_DEVBUS=y
CONFIG_MVEBU_MBUS=y
CONFIG_MVMDIO=y
CONFIG_MVNETA=y
CONFIG_MVSW61XX_PHY=y
CONFIG_MV_XOR=y
CONFIG_NEED_DMA_MAP_STATE=y
# CONFIG_NEON is not set
CONFIG_NET_FLOW_LIMIT=y
CONFIG_NO_BOOTMEM=y
CONFIG_NR_CPUS=4
CONFIG_OF=y
CONFIG_OF_ADDRESS=y
CONFIG_OF_ADDRESS_PCI=y
CONFIG_OF_EARLY_FLATTREE=y
CONFIG_OF_FLATTREE=y
CONFIG_OF_GPIO=y
CONFIG_OF_IRQ=y
CONFIG_OF_MDIO=y
CONFIG_OF_MTD=y
CONFIG_OF_NET=y
CONFIG_OF_PCI=y
CONFIG_OF_PCI_IRQ=y
CONFIG_OF_RESERVED_MEM=y
CONFIG_OLD_SIGACTION=y
CONFIG_OLD_SIGSUSPEND3=y
CONFIG_OUTER_CACHE=y
CONFIG_OUTER_CACHE_SYNC=y
CONFIG_PAGEFLAGS_EXTENDED=y
CONFIG_PAGE_OFFSET=0xC0000000
CONFIG_PCI=y
CONFIG_PCI_MSI=y
CONFIG_PCI_MVEBU=y
CONFIG_PERF_USE_VMALLOC=y
CONFIG_PHYLIB=y
CONFIG_PINCTRL=y
CONFIG_PINCTRL_ARMADA_370=y
CONFIG_PINCTRL_ARMADA_38X=y
CONFIG_PINCTRL_ARMADA_XP=y
CONFIG_PINCTRL_MVEBU=y
# CONFIG_PINCTRL_SINGLE is not set
CONFIG_PJ4B_ERRATA_4742=y
# CONFIG_PL310_ERRATA_588369 is not set
# CONFIG_PL310_ERRATA_727915 is not set
# CONFIG_PL310_ERRATA_753970 is not set
# CONFIG_PL310_ERRATA_769419 is not set
CONFIG_PLAT_ORION=y
CONFIG_PM_OPP=y
CONFIG_PWM=y
# CONFIG_PWM_FSL_FTM is not set
# CONFIG_PREEMPT_RCU is not set
CONFIG_RCU_STALL_COMMON=y
CONFIG_RFS_ACCEL=y
CONFIG_RPS=y
CONFIG_RTC_CLASS=y
# CONFIG_RTC_DRV_MV is not set
CONFIG_RWSEM_SPIN_ON_OWNER=y
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_SCHED_HRTICK=y
# CONFIG_SCSI_DMA is not set
CONFIG_SERIAL_8250_DW=y
CONFIG_SMP=y
CONFIG_SMP_ON_UP=y
CONFIG_SOC_BUS=y
CONFIG_SPARSE_IRQ=y
CONFIG_SPI=y
CONFIG_SPI_MASTER=y
CONFIG_SPI_ORION=y
CONFIG_STOP_MACHINE=y
CONFIG_SWCONFIG=y
CONFIG_SWIOTLB=y
CONFIG_SWP_EMULATE=y
CONFIG_SYS_SUPPORTS_APM_EMULATION=y
# CONFIG_THUMB2_KERNEL is not set
CONFIG_TICK_CPU_ACCOUNTING=y
CONFIG_TIMER_STATS=y
CONFIG_TREE_RCU=y
CONFIG_UBIFS_FS=y
# CONFIG_UBIFS_FS_ADVANCED_COMPR is not set
CONFIG_UBIFS_FS_LZO=y
CONFIG_UBIFS_FS_XZ=y
CONFIG_UBIFS_FS_ZLIB=y
CONFIG_UID16=y
CONFIG_UNCOMPRESS_INCLUDE="debug/uncompress.h"
CONFIG_USB_SUPPORT=y
CONFIG_USE_OF=y
CONFIG_VECTORS_BASE=0xffff0000
CONFIG_VFP=y
CONFIG_VFPv3=y
# CONFIG_XEN is not set
CONFIG_XPS=y
CONFIG_XZ_DEC_ARM=y
CONFIG_XZ_DEC_BCJ=y
CONFIG_ZBOOT_ROM_BSS=0x0
CONFIG_ZBOOT_ROM_TEXT=0x0
CONFIG_ZLIB_DEFLATE=y
CONFIG_ZLIB_INFLATE=y
CONFIG_ZONE_DMA_FLAG=0

10
target/linux/mvebu/patches-3.19/001-build_mamba_dts.patch
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--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -541,6 +541,7 @@ dtb-$(CONFIG_MACH_ARMADA_XP) += \
armada-xp-db.dtb \
armada-xp-gp.dtb \
armada-xp-lenovo-ix4-300d.dtb \
+ armada-xp-mamba.dtb \
armada-xp-matrix.dtb \
armada-xp-netgear-rn2120.dtb \
armada-xp-openblocks-ax3-4.dtb \

51
target/linux/mvebu/patches-3.19/050-leds_tlc59116_document_binding.patch
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@ -0,0 +1,51 @@
Document the binding for the TLC59116 LED driver.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
---
.../devicetree/bindings/leds/leds-tlc59116.txt | 40 ++++++++++++++++++++++
1 file changed, 40 insertions(+)
create mode 100644 Documentation/devicetree/bindings/leds/leds-tlc59116.txt
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/leds-tlc59116.txt
@@ -0,0 +1,40 @@
+LEDs connected to tcl59116
+
+Required properties
+- compatible: should be "ti,tlc59116"
+- #address-cells: must be 1
+- #size-cells: must be 0
+- reg: typically 0x68
+
+Each led is represented as a sub-node of the ti,,tlc59116.
+See Documentation/devicetree/bindings/leds/common.txt
+
+LED sub-node properties:
+- reg: number of LED line, 0 to 15
+- label: (optional) name of LED
+- linux,default-trigger : (optional)
+
+Examples:
+
+tlc59116@68 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "ti,tlc59116";
+ reg = <0x68>;
+
+ wan@0 {
+ label = "wrt1900ac:amber:wan";
+ reg = <0x0>;
+ };
+
+ 2g@2 {
+ label = "wrt1900ac:white:2g";
+ reg = <0x2>;
+ };
+
+ alive@9 {
+ label = "wrt1900ac:green:alive";
+ reg = <0x9>;
+ linux,default_trigger = "heartbeat";
+ };
+};

297
target/linux/mvebu/patches-3.19/051-leds_tlc59116_add_driver.patch
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The TLC59116 is an I2C bus controlled 16-channel LED driver. Each LED
output has its own 8-bit fixed-frequency PWM controller to control the
brightness of the LED.
This is based on a driver from Belkin, but has been extensively
rewritten.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
---
drivers/leds/Kconfig | 8 ++
drivers/leds/Makefile | 1 +
drivers/leds/leds-tlc59116.c | 252 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 261 insertions(+)
create mode 100644 drivers/leds/leds-tlc59116.c
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -457,6 +457,14 @@ config LEDS_TCA6507
LED driver chips accessed via the I2C bus.
Driver support brightness control and hardware-assisted blinking.
+config LEDS_TLC59116
+ tristate "LED driver for TLC59116F controllers"
+ depends on LEDS_CLASS && I2C
+ select REGMAP_I2C
+ help
+ This option enables support for Texas Instruments TLC59116F
+ LED controller.
+
config LEDS_MAX8997
tristate "LED support for MAX8997 PMIC"
depends on LEDS_CLASS && MFD_MAX8997
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -30,6 +30,7 @@ obj-$(CONFIG_LEDS_LP8501) += leds-lp850
obj-$(CONFIG_LEDS_LP8788) += leds-lp8788.o
obj-$(CONFIG_LEDS_LP8860) += leds-lp8860.o
obj-$(CONFIG_LEDS_TCA6507) += leds-tca6507.o
+obj-$(CONFIG_LEDS_TLC59116) += leds-tlc59116.o
obj-$(CONFIG_LEDS_CLEVO_MAIL) += leds-clevo-mail.o
obj-$(CONFIG_LEDS_IPAQ_MICRO) += leds-ipaq-micro.o
obj-$(CONFIG_LEDS_HP6XX) += leds-hp6xx.o
--- /dev/null
+++ b/drivers/leds/leds-tlc59116.c
@@ -0,0 +1,252 @@
+/*
+ * Copyright 2014 Belkin Inc.
+ * Copyright 2014 Andrew Lunn <andrew@lunn.ch>
+ *
+ * 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; version 2 of the License.
+ */
+
+#include <linux/i2c.h>
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+
+#define TLC59116_LEDS 16
+
+#define TLC59116_REG_MODE1 0x00
+#define MODE1_RESPON_ADDR_MASK 0xF0
+#define MODE1_NORMAL_MODE (0 << 4)
+#define MODE1_SPEED_MODE (1 << 4)
+
+#define TLC59116_REG_MODE2 0x01
+#define MODE2_DIM (0 << 5)
+#define MODE2_BLINK (1 << 5)
+#define MODE2_OCH_STOP (0 << 3)
+#define MODE2_OCH_ACK (1 << 3)
+
+#define TLC59116_REG_PWM(x) (0x02 + (x))
+
+#define TLC59116_REG_GRPPWM 0x12
+#define TLC59116_REG_GRPFREQ 0x13
+
+/* LED Driver Output State, determine the source that drives LED outputs */
+#define TLC59116_REG_LEDOUT(x) (0x14 + ((x) >> 2))
+#define TLC59116_LED_OFF 0x0 /* Output LOW */
+#define TLC59116_LED_ON 0x1 /* Output HI-Z */
+#define TLC59116_DIM 0x2 /* Dimming */
+#define TLC59116_BLINK 0x3 /* Blinking */
+#define LED_MASK 0x3
+
+#define ldev_to_led(c) container_of(c, struct tlc59116_led, ldev)
+#define work_to_led(work) container_of(work, struct tlc59116_led, work)
+
+struct tlc59116_led {
+ bool active;
+ struct regmap *regmap;
+ unsigned int led_no;
+ struct led_classdev ldev;
+ struct work_struct work;
+};
+
+struct tlc59116_priv {
+ struct tlc59116_led leds[TLC59116_LEDS];
+};
+
+static int
+tlc59116_set_mode(struct regmap *regmap, u8 mode)
+{
+ int err;
+ u8 val;
+
+ if ((mode != MODE2_DIM) && (mode != MODE2_BLINK))
+ mode = MODE2_DIM;
+
+ /* Configure MODE1 register */
+ err = regmap_write(regmap, TLC59116_REG_MODE1, MODE1_NORMAL_MODE);
+ if (err)
+ return err;
+
+ /* Configure MODE2 Reg */
+ val = MODE2_OCH_STOP | mode;
+
+ return regmap_write(regmap, TLC59116_REG_MODE2, val);
+}
+
+static int
+tlc59116_set_led(struct tlc59116_led *led, u8 val)
+{
+ struct regmap *regmap = led->regmap;
+ unsigned int i = (led->led_no % 4) * 2;
+ unsigned int addr = TLC59116_REG_LEDOUT(led->led_no);
+ unsigned int mask = LED_MASK << i;
+
+ val = val << i;
+
+ return regmap_update_bits(regmap, addr, mask, val);
+}
+
+static void
+tlc59116_led_work(struct work_struct *work)
+{
+ struct tlc59116_led *led = work_to_led(work);
+ struct regmap *regmap = led->regmap;
+ int err;
+ u8 pwm;
+
+ pwm = TLC59116_REG_PWM(led->led_no);
+ err = regmap_write(regmap, pwm, led->ldev.brightness);
+ if (err)
+ dev_err(led->ldev.dev, "Failed setting brightness\n");
+}
+
+static void
+tlc59116_led_set(struct led_classdev *led_cdev, enum led_brightness value)
+{
+ struct tlc59116_led *led = ldev_to_led(led_cdev);
+
+ led->ldev.brightness = value;
+ schedule_work(&led->work);
+}
+
+static void
+tlc59116_destroy_devices(struct tlc59116_priv *priv, unsigned int i)
+{
+ while (--i >= 0) {
+ if (priv->leds[i].active) {
+ led_classdev_unregister(&priv->leds[i].ldev);
+ cancel_work_sync(&priv->leds[i].work);
+ }
+ }
+}
+
+static int
+tlc59116_configure(struct device *dev,
+ struct tlc59116_priv *priv,
+ struct regmap *regmap)
+{
+ unsigned int i;
+ int err = 0;
+
+ tlc59116_set_mode(regmap, MODE2_DIM);
+ for (i = 0; i < TLC59116_LEDS; i++) {
+ struct tlc59116_led *led = &priv->leds[i];
+
+ if (!led->active)
+ continue;
+
+ led->regmap = regmap;
+ led->led_no = i;
+ led->ldev.brightness_set = tlc59116_led_set;
+ led->ldev.max_brightness = LED_FULL;
+ INIT_WORK(&led->work, tlc59116_led_work);
+ err = led_classdev_register(dev, &led->ldev);
+ if (err < 0) {
+ dev_err(dev, "couldn't register LED %s\n",
+ led->ldev.name);
+ goto exit;
+ }
+ tlc59116_set_led(led, TLC59116_DIM);
+ }
+
+ return 0;
+
+exit:
+ tlc59116_destroy_devices(priv, i);
+ return err;
+}
+
+static const struct regmap_config tlc59116_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = 0x1e,
+};
+
+static int
+tlc59116_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct tlc59116_priv *priv = i2c_get_clientdata(client);
+ struct device *dev = &client->dev;
+ struct device_node *np = client->dev.of_node, *child;
+ struct regmap *regmap;
+ int err, count, reg;
+
+ count = of_get_child_count(np);
+ if (!count || count > TLC59116_LEDS)
+ return -EINVAL;
+
+ if (!i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_BYTE_DATA))
+ return -EIO;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ regmap = devm_regmap_init_i2c(client, &tlc59116_regmap);
+ if (IS_ERR(regmap)) {
+ err = PTR_ERR(regmap);
+ dev_err(dev, "Failed to allocate register map: %d\n", err);
+ return err;
+ }
+
+ i2c_set_clientdata(client, priv);
+
+ for_each_child_of_node(np, child) {
+ err = of_property_read_u32(child, "reg", &reg);
+ if (err)
+ return err;
+ if (reg < 0 || reg >= TLC59116_LEDS)
+ return -EINVAL;
+ if (priv->leds[reg].active)
+ return -EINVAL;
+ priv->leds[reg].active = true;
+ priv->leds[reg].ldev.name =
+ of_get_property(child, "label", NULL) ? : child->name;
+ priv->leds[reg].ldev.default_trigger =
+ of_get_property(child, "linux,default-trigger", NULL);
+ }
+ return tlc59116_configure(dev, priv, regmap);
+}
+
+static int
+tlc59116_remove(struct i2c_client *client)
+{
+ struct tlc59116_priv *priv = i2c_get_clientdata(client);
+
+ tlc59116_destroy_devices(priv, TLC59116_LEDS);
+
+ return 0;
+}
+
+static const struct of_device_id of_tlc59116_leds_match[] = {
+ { .compatible = "ti,tlc59116", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, of_tlc59116_leds_match);
+
+static const struct i2c_device_id tlc59116_id[] = {
+ { "tlc59116" },
+ {},
+};
+MODULE_DEVICE_TABLE(i2c, tlc59116_id);
+
+static struct i2c_driver tlc59116_driver = {
+ .driver = {
+ .name = "tlc59116",
+ .of_match_table = of_match_ptr(of_tlc59116_leds_match),
+ },
+ .probe = tlc59116_probe,
+ .remove = tlc59116_remove,
+ .id_table = tlc59116_id,
+};
+
+module_i2c_driver(tlc59116_driver);
+
+MODULE_AUTHOR("Andrew Lunn <andrew@lunn.ch>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("TLC59116 LED driver");

153
target/linux/mvebu/patches-3.19/100-find_active_root.patch
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@ -0,0 +1,153 @@
The WRT1900AC among other Linksys routers uses a dual-firmware layout.
The bootloader passes the active rootfs in bootargs and also sets the
rootfstype to jffs2 - which is clearly something we don't want.
Rename both root= and rootfstype= variables to avoid issues and also
use the former to dynamically rename the active partition to "ubi".
Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
--- a/arch/arm/boot/compressed/atags_to_fdt.c
+++ b/arch/arm/boot/compressed/atags_to_fdt.c
@@ -66,6 +66,18 @@ static uint32_t get_cell_size(const void
return cell_size;
}
+static void mangle_bootargs(void *fdt, const char *fdt_cmdline)
+{
+ char *rootdev;
+ char *rootfs;
+
+ rootdev = strstr(fdt_cmdline, "root=/dev/mtdblock");
+ strncpy(rootdev, "uboot_active_root=", 18);
+
+ rootfs = strstr(fdt_cmdline, "rootfstype");
+ strncpy(rootfs, "origfstype", 10);
+}
+
static void merge_fdt_bootargs(void *fdt, const char *fdt_cmdline)
{
char cmdline[COMMAND_LINE_SIZE];
@@ -135,6 +147,9 @@ int atags_to_fdt(void *atag_list, void *
for_each_tag(atag, atag_list) {
if (atag->hdr.tag == ATAG_CMDLINE) {
+ /* Rename the original root= and rootfstype= options */
+ mangle_bootargs(fdt,
+ atag->u.cmdline.cmdline);
/* Append the ATAGS command line to the device tree
* command line.
* NB: This means that if the same parameter is set in
--- a/arch/arm/boot/compressed/string.c
+++ b/arch/arm/boot/compressed/string.c
@@ -111,6 +111,53 @@ char *strchr(const char *s, int c)
return (char *)s;
}
+/**
+ * strncpy - Copy a length-limited, %NUL-terminated string
+ * @dest: Where to copy the string to
+ * @src: Where to copy the string from
+ * @count: The maximum number of bytes to copy
+ *
+ * The result is not %NUL-terminated if the source exceeds
+ * @count bytes.
+ *
+ * In the case where the length of @src is less than that of
+ * count, the remainder of @dest will be padded with %NUL.
+ *
+ */
+char *strncpy(char *dest, const char *src, size_t count)
+{
+ char *tmp = dest;
+
+ while (count) {
+ if ((*tmp = *src) != 0)
+ src++;
+ tmp++;
+ count--;
+ }
+ return dest;
+}
+
+/**
+ * strstr - Find the first substring in a %NUL terminated string
+ * @s1: The string to be searched
+ * @s2: The string to search for
+ */
+char *strstr(const char *s1, const char *s2)
+{
+ size_t l1, l2;
+
+ l2 = strlen(s2);
+ if (!l2)
+ return (char *)s1;
+ l1 = strlen(s1);
+ while (l1 >= l2) {
+ l1--;
+ if (!memcmp(s1, s2, l2))
+ return (char *)s1;
+ s1++;
+ }
+ return NULL;
+}
#undef memset
void *memset(void *s, int c, size_t count)
--- a/drivers/mtd/ofpart.c
+++ b/drivers/mtd/ofpart.c
@@ -25,12 +25,15 @@ static bool node_has_compatible(struct d
return of_get_property(pp, "compatible", NULL);
}
+static int uboot_active_root;
+
static int parse_ofpart_partitions(struct mtd_info *master,
struct mtd_partition **pparts,
struct mtd_part_parser_data *data)
{
struct device_node *node;
const char *partname;
+ const char *owrtpart = "ubi";
struct device_node *pp;
int nr_parts, i;
@@ -78,9 +81,15 @@ static int parse_ofpart_partitions(struc
(*pparts)[i].offset = of_read_number(reg, a_cells);
(*pparts)[i].size = of_read_number(reg + a_cells, s_cells);
- partname = of_get_property(pp, "label", &len);
- if (!partname)
- partname = of_get_property(pp, "name", &len);
+ if (uboot_active_root && (i == uboot_active_root)) {
+ partname = owrtpart;
+ } else {
+ partname = of_get_property(pp, "label", &len);
+
+ if (!partname)
+ partname = of_get_property(pp, "name", &len);
+ }
+
(*pparts)[i].name = partname;
if (of_get_property(pp, "read-only", &len))
@@ -178,6 +187,18 @@ static int __init ofpart_parser_init(voi
return 0;
}
+static int __init active_root(char *str)
+{
+ get_option(&str, &uboot_active_root);
+
+ if (!uboot_active_root)
+ return 1;
+
+ return 1;
+}
+
+__setup("uboot_active_root=", active_root);
+
static void __exit ofpart_parser_exit(void)
{
deregister_mtd_parser(&ofpart_parser);

15
target/linux/mvebu/patches-3.19/102-revert_i2c_delay.patch
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@ -0,0 +1,15 @@
--- a/arch/arm/boot/dts/armada-xp.dtsi
+++ b/arch/arm/boot/dts/armada-xp.dtsi
@@ -54,12 +54,10 @@
};
i2c0: i2c@11000 {
- compatible = "marvell,mv78230-i2c", "marvell,mv64xxx-i2c";
reg = <0x11000 0x100>;
};
i2c1: i2c@11100 {
- compatible = "marvell,mv78230-i2c", "marvell,mv64xxx-i2c";
reg = <0x11100 0x100>;
};

223
target/linux/mvebu/patches-3.19/200-gpio_mvebu_checkpatch_fixes.patch
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@ -0,0 +1,223 @@
Wrap some long lines.
Prefer seq_puts() over seq_printf().
space to tab conversions.
Spelling error fix.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
---
drivers/gpio/gpio-mvebu.c | 77 ++++++++++++++++++++++++++---------------------
1 file changed, 42 insertions(+), 35 deletions(-)
--- a/drivers/gpio/gpio-mvebu.c
+++ b/drivers/gpio/gpio-mvebu.c
@@ -59,7 +59,7 @@
#define GPIO_LEVEL_MASK_OFF 0x001c
/* The MV78200 has per-CPU registers for edge mask and level mask */
-#define GPIO_EDGE_MASK_MV78200_OFF(cpu) ((cpu) ? 0x30 : 0x18)
+#define GPIO_EDGE_MASK_MV78200_OFF(cpu) ((cpu) ? 0x30 : 0x18)
#define GPIO_LEVEL_MASK_MV78200_OFF(cpu) ((cpu) ? 0x34 : 0x1C)
/* The Armada XP has per-CPU registers for interrupt cause, interrupt
@@ -69,11 +69,11 @@
#define GPIO_EDGE_MASK_ARMADAXP_OFF(cpu) (0x10 + (cpu) * 0x4)
#define GPIO_LEVEL_MASK_ARMADAXP_OFF(cpu) (0x20 + (cpu) * 0x4)
-#define MVEBU_GPIO_SOC_VARIANT_ORION 0x1
-#define MVEBU_GPIO_SOC_VARIANT_MV78200 0x2
+#define MVEBU_GPIO_SOC_VARIANT_ORION 0x1
+#define MVEBU_GPIO_SOC_VARIANT_MV78200 0x2
#define MVEBU_GPIO_SOC_VARIANT_ARMADAXP 0x3
-#define MVEBU_MAX_GPIO_PER_BANK 32
+#define MVEBU_MAX_GPIO_PER_BANK 32
struct mvebu_gpio_chip {
struct gpio_chip chip;
@@ -82,9 +82,9 @@ struct mvebu_gpio_chip {
void __iomem *percpu_membase;
int irqbase;
struct irq_domain *domain;
- int soc_variant;
+ int soc_variant;
- /* Used to preserve GPIO registers accross suspend/resume */
+ /* Used to preserve GPIO registers across suspend/resume */
u32 out_reg;
u32 io_conf_reg;
u32 blink_en_reg;
@@ -107,7 +107,8 @@ static inline void __iomem *mvebu_gpiore
return mvchip->membase + GPIO_BLINK_EN_OFF;
}
-static inline void __iomem *mvebu_gpioreg_io_conf(struct mvebu_gpio_chip *mvchip)
+static inline void __iomem *
+mvebu_gpioreg_io_conf(struct mvebu_gpio_chip *mvchip)
{
return mvchip->membase + GPIO_IO_CONF_OFF;
}
@@ -117,12 +118,14 @@ static inline void __iomem *mvebu_gpiore
return mvchip->membase + GPIO_IN_POL_OFF;
}
-static inline void __iomem *mvebu_gpioreg_data_in(struct mvebu_gpio_chip *mvchip)
+static inline void __iomem *
+mvebu_gpioreg_data_in(struct mvebu_gpio_chip *mvchip)
{
return mvchip->membase + GPIO_DATA_IN_OFF;
}
-static inline void __iomem *mvebu_gpioreg_edge_cause(struct mvebu_gpio_chip *mvchip)
+static inline void __iomem *
+mvebu_gpioreg_edge_cause(struct mvebu_gpio_chip *mvchip)
{
int cpu;
@@ -132,13 +135,15 @@ static inline void __iomem *mvebu_gpiore
return mvchip->membase + GPIO_EDGE_CAUSE_OFF;
case MVEBU_GPIO_SOC_VARIANT_ARMADAXP:
cpu = smp_processor_id();
- return mvchip->percpu_membase + GPIO_EDGE_CAUSE_ARMADAXP_OFF(cpu);
+ return mvchip->percpu_membase +
+ GPIO_EDGE_CAUSE_ARMADAXP_OFF(cpu);
default:
BUG();
}
}
-static inline void __iomem *mvebu_gpioreg_edge_mask(struct mvebu_gpio_chip *mvchip)
+static inline void __iomem *
+mvebu_gpioreg_edge_mask(struct mvebu_gpio_chip *mvchip)
{
int cpu;
@@ -150,7 +155,8 @@ static inline void __iomem *mvebu_gpiore
return mvchip->membase + GPIO_EDGE_MASK_MV78200_OFF(cpu);
case MVEBU_GPIO_SOC_VARIANT_ARMADAXP:
cpu = smp_processor_id();
- return mvchip->percpu_membase + GPIO_EDGE_MASK_ARMADAXP_OFF(cpu);
+ return mvchip->percpu_membase +
+ GPIO_EDGE_MASK_ARMADAXP_OFF(cpu);
default:
BUG();
}
@@ -168,7 +174,8 @@ static void __iomem *mvebu_gpioreg_level
return mvchip->membase + GPIO_LEVEL_MASK_MV78200_OFF(cpu);
case MVEBU_GPIO_SOC_VARIANT_ARMADAXP:
cpu = smp_processor_id();
- return mvchip->percpu_membase + GPIO_LEVEL_MASK_ARMADAXP_OFF(cpu);
+ return mvchip->percpu_membase +
+ GPIO_LEVEL_MASK_ARMADAXP_OFF(cpu);
default:
BUG();
}
@@ -364,22 +371,22 @@ static void mvebu_gpio_level_irq_unmask(
* value of the line or the opposite value.
*
* Level IRQ handlers: DATA_IN is used directly as cause register.
- * Interrupt are masked by LEVEL_MASK registers.
+ * Interrupt are masked by LEVEL_MASK registers.
* Edge IRQ handlers: Change in DATA_IN are latched in EDGE_CAUSE.
- * Interrupt are masked by EDGE_MASK registers.
+ * Interrupt are masked by EDGE_MASK registers.
* Both-edge handlers: Similar to regular Edge handlers, but also swaps
- * the polarity to catch the next line transaction.
- * This is a race condition that might not perfectly
- * work on some use cases.
+ * the polarity to catch the next line transaction.
+ * This is a race condition that might not perfectly
+ * work on some use cases.
*
* Every eight GPIO lines are grouped (OR'ed) before going up to main
* cause register.
*
- * EDGE cause mask
- * data-in /--------| |-----| |----\
- * -----| |----- ---- to main cause reg
- * X \----------------| |----/
- * polarity LEVEL mask
+ * EDGE cause mask
+ * data-in /--------| |-----| |----\
+ * -----| |----- ---- to main cause reg
+ * X \----------------| |----/
+ * polarity LEVEL mask
*
****************************************************************************/
@@ -394,9 +401,8 @@ static int mvebu_gpio_irq_set_type(struc
pin = d->hwirq;
u = readl_relaxed(mvebu_gpioreg_io_conf(mvchip)) & (1 << pin);
- if (!u) {
+ if (!u)
return -EINVAL;
- }
type &= IRQ_TYPE_SENSE_MASK;
if (type == IRQ_TYPE_NONE)
@@ -529,13 +535,13 @@ static void mvebu_gpio_dbg_show(struct s
(data_in ^ in_pol) & msk ? "hi" : "lo",
in_pol & msk ? "lo" : "hi");
if (!((edg_msk | lvl_msk) & msk)) {
- seq_printf(s, " disabled\n");
+ seq_puts(s, " disabled\n");
continue;
}
if (edg_msk & msk)
- seq_printf(s, " edge ");
+ seq_puts(s, " edge ");
if (lvl_msk & msk)
- seq_printf(s, " level");
+ seq_puts(s, " level");
seq_printf(s, " (%s)\n", cause & msk ? "pending" : "clear ");
}
}
@@ -546,15 +552,15 @@ static void mvebu_gpio_dbg_show(struct s
static const struct of_device_id mvebu_gpio_of_match[] = {
{
.compatible = "marvell,orion-gpio",
- .data = (void *) MVEBU_GPIO_SOC_VARIANT_ORION,
+ .data = (void *) MVEBU_GPIO_SOC_VARIANT_ORION,
},
{
.compatible = "marvell,mv78200-gpio",
- .data = (void *) MVEBU_GPIO_SOC_VARIANT_MV78200,
+ .data = (void *) MVEBU_GPIO_SOC_VARIANT_MV78200,
},
{
.compatible = "marvell,armadaxp-gpio",
- .data = (void *) MVEBU_GPIO_SOC_VARIANT_ARMADAXP,
+ .data = (void *) MVEBU_GPIO_SOC_VARIANT_ARMADAXP,
},
{
/* sentinel */
@@ -668,7 +674,8 @@ static int mvebu_gpio_probe(struct platf
else
soc_variant = MVEBU_GPIO_SOC_VARIANT_ORION;
- mvchip = devm_kzalloc(&pdev->dev, sizeof(struct mvebu_gpio_chip), GFP_KERNEL);
+ mvchip = devm_kzalloc(&pdev->dev, sizeof(struct mvebu_gpio_chip),
+ GFP_KERNEL);
if (!mvchip)
return -ENOMEM;
@@ -767,8 +774,8 @@ static int mvebu_gpio_probe(struct platf
* interrupt handlers, with each handler dealing with 8 GPIO
* pins. */
for (i = 0; i < 4; i++) {
- int irq;
- irq = platform_get_irq(pdev, i);
+ int irq = platform_get_irq(pdev, i);
+
if (irq < 0)
continue;
irq_set_handler_data(irq, mvchip);
@@ -827,7 +834,7 @@ static int mvebu_gpio_probe(struct platf
static struct platform_driver mvebu_gpio_driver = {
.driver = {
- .name = "mvebu-gpio",
+ .name = "mvebu-gpio",
.of_match_table = mvebu_gpio_of_match,
},
.probe = mvebu_gpio_probe,

63
target/linux/mvebu/patches-3.19/201-gpio_mvebu_fix_probe_cleanup_on_error.patch
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@ -0,0 +1,63 @@
Ensure that when there is an error during probe that the gpiochip is
removed and the generic irq chip is removed.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
---
drivers/gpio/gpio-mvebu.c | 23 +++++++++++++++++------
1 file changed, 17 insertions(+), 6 deletions(-)
--- a/drivers/gpio/gpio-mvebu.c
+++ b/drivers/gpio/gpio-mvebu.c
@@ -667,6 +667,7 @@ static int mvebu_gpio_probe(struct platf
unsigned int ngpios;
int soc_variant;
int i, cpu, id;
+ int err;
match = of_match_device(mvebu_gpio_of_match, &pdev->dev);
if (match)
@@ -785,14 +786,16 @@ static int mvebu_gpio_probe(struct platf
mvchip->irqbase = irq_alloc_descs(-1, 0, ngpios, -1);
if (mvchip->irqbase < 0) {
dev_err(&pdev->dev, "no irqs\n");
- return mvchip->irqbase;
+ err = mvchip->irqbase;
+ goto err_gpiochip_add;
}
gc = irq_alloc_generic_chip("mvebu_gpio_irq", 2, mvchip->irqbase,
mvchip->membase, handle_level_irq);
if (!gc) {
dev_err(&pdev->dev, "Cannot allocate generic irq_chip\n");
- return -ENOMEM;
+ err = -ENOMEM;
+ goto err_gpiochip_add;
}
gc->private = mvchip;
@@ -823,13 +826,21 @@ static int mvebu_gpio_probe(struct platf
if (!mvchip->domain) {
dev_err(&pdev->dev, "couldn't allocate irq domain %s (DT).\n",
mvchip->chip.label);
- irq_remove_generic_chip(gc, IRQ_MSK(ngpios), IRQ_NOREQUEST,
- IRQ_LEVEL | IRQ_NOPROBE);
- kfree(gc);
- return -ENODEV;
+ err = -ENODEV;
+ goto err_generic_chip;
}
return 0;
+
+err_generic_chip:
+ irq_remove_generic_chip(gc, IRQ_MSK(ngpios), IRQ_NOREQUEST,
+ IRQ_LEVEL | IRQ_NOPROBE);
+ kfree(gc);
+
+err_gpiochip_add:
+ gpiochip_remove(&mvchip->chip);
+
+ return err;
}
static struct platform_driver mvebu_gpio_driver = {

433
target/linux/mvebu/patches-3.19/202-gpio_mvebu_add_limited_pwm_support.patch
Unescape View File

@ -0,0 +1,433 @@
Armada 370/XP devices can 'blink' gpio lines with a configurable on
and off period. This can be modelled as a PWM.
However, there are only two sets of PWM configuration registers for
all the gpio lines. This driver simply allows a single gpio line per
gpio chip of 32 lines to be used as a PWM. Attempts to use more return
EBUSY.
Due to the interleaving of registers it is not simple to separate the
PWM driver from the gpio driver. Thus the gpio driver has been
extended with a PWM driver.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
---
drivers/gpio/Kconfig | 5 ++
drivers/gpio/Makefile | 1 +
drivers/gpio/gpio-mvebu-pwm.c | 202 ++++++++++++++++++++++++++++++++++++++++++
drivers/gpio/gpio-mvebu.c | 37 +++-----
drivers/gpio/gpio-mvebu.h | 79 +++++++++++++++++
5 files changed, 299 insertions(+), 25 deletions(-)
create mode 100644 drivers/gpio/gpio-mvebu-pwm.c
create mode 100644 drivers/gpio/gpio-mvebu.h
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -239,6 +239,11 @@ config GPIO_MVEBU
select GPIO_GENERIC
select GENERIC_IRQ_CHIP
+config GPIO_MVEBU_PWM
+ def_bool y
+ depends on GPIO_MVEBU
+ depends on PWM
+
config GPIO_MXC
def_bool y
depends on ARCH_MXC
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -60,6 +60,7 @@ obj-$(CONFIG_GPIO_MSIC) += gpio-msic.o
obj-$(CONFIG_GPIO_MSM_V1) += gpio-msm-v1.o
obj-$(CONFIG_GPIO_MSM_V2) += gpio-msm-v2.o
obj-$(CONFIG_GPIO_MVEBU) += gpio-mvebu.o
+obj-$(CONFIG_GPIO_MVEBU_PWM) += gpio-mvebu-pwm.o
obj-$(CONFIG_GPIO_MXC) += gpio-mxc.o
obj-$(CONFIG_GPIO_MXS) += gpio-mxs.o
obj-$(CONFIG_GPIO_OCTEON) += gpio-octeon.o
--- /dev/null
+++ b/drivers/gpio/gpio-mvebu-pwm.c
@@ -0,0 +1,202 @@
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/gpio.h>
+#include <linux/pwm.h>
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+#include "gpio-mvebu.h"
+#include "gpiolib.h"
+
+static void __iomem *mvebu_gpioreg_blink_select(struct mvebu_gpio_chip *mvchip)
+{
+ return mvchip->membase + GPIO_BLINK_CNT_SELECT;
+}
+
+static inline struct mvebu_pwm *to_mvebu_pwm(struct pwm_chip *chip)
+{
+ return container_of(chip, struct mvebu_pwm, chip);
+}
+
+static inline struct mvebu_gpio_chip *to_mvchip(struct mvebu_pwm *pwm)
+{
+ return container_of(pwm, struct mvebu_gpio_chip, pwm);
+}
+
+static int mvebu_pwm_request(struct pwm_chip *chip, struct pwm_device *pwmd)
+{
+ struct mvebu_pwm *pwm = to_mvebu_pwm(chip);
+ struct mvebu_gpio_chip *mvchip = to_mvchip(pwm);
+ struct gpio_desc *desc = gpio_to_desc(pwmd->pwm);
+ unsigned long flags;
+ int ret = 0;
+
+ spin_lock_irqsave(&pwm->lock, flags);
+ if (pwm->used) {
+ ret = -EBUSY;
+ } else {
+ if (!desc) {
+ ret = -ENODEV;
+ goto out;
+ }
+ ret = gpiod_request(desc, "mvebu-pwm");
+ if (ret)
+ goto out;
+
+ ret = gpiod_direction_output(desc, 0);
+ if (ret) {
+ gpiod_free(desc);
+ goto out;
+ }
+
+ pwm->pin = pwmd->pwm - mvchip->chip.base;
+ pwm->used = true;
+ }
+
+out:
+ spin_unlock_irqrestore(&pwm->lock, flags);
+ return ret;
+}
+
+static void mvebu_pwm_free(struct pwm_chip *chip, struct pwm_device *pwmd)
+{
+ struct mvebu_pwm *pwm = to_mvebu_pwm(chip);
+ struct gpio_desc *desc = gpio_to_desc(pwmd->pwm);
+ unsigned long flags;
+
+ spin_lock_irqsave(&pwm->lock, flags);
+ gpiod_free(desc);
+ pwm->used = false;
+ spin_unlock_irqrestore(&pwm->lock, flags);
+}
+
+static int mvebu_pwm_config(struct pwm_chip *chip, struct pwm_device *pwmd,
+ int duty_ns, int period_ns)
+{
+ struct mvebu_pwm *pwm = to_mvebu_pwm(chip);
+ struct mvebu_gpio_chip *mvchip = to_mvchip(pwm);
+ unsigned int on, off;
+ unsigned long long val;
+ u32 u;
+
+ val = (unsigned long long) pwm->clk_rate * duty_ns;
+ do_div(val, NSEC_PER_SEC);
+ if (val > UINT_MAX)
+ return -EINVAL;
+ if (val)
+ on = val;
+ else
+ on = 1;
+
+ val = (unsigned long long) pwm->clk_rate * (period_ns - duty_ns);
+ do_div(val, NSEC_PER_SEC);
+ if (val > UINT_MAX)
+ return -EINVAL;
+ if (val)
+ off = val;
+ else
+ off = 1;
+
+ u = readl_relaxed(mvebu_gpioreg_blink_select(mvchip));
+ u &= ~(1 << pwm->pin);
+ u |= (pwm->id << pwm->pin);
+ writel_relaxed(u, mvebu_gpioreg_blink_select(mvchip));
+
+ writel_relaxed(on, pwm->membase + BLINK_ON_DURATION);
+ writel_relaxed(off, pwm->membase + BLINK_OFF_DURATION);
+
+ return 0;
+}
+
+static int mvebu_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwmd)
+{
+ struct mvebu_pwm *pwm = to_mvebu_pwm(chip);
+ struct mvebu_gpio_chip *mvchip = to_mvchip(pwm);
+
+ mvebu_gpio_blink(&mvchip->chip, pwm->pin, 1);
+
+ return 0;
+}
+
+static void mvebu_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwmd)
+{
+ struct mvebu_pwm *pwm = to_mvebu_pwm(chip);
+ struct mvebu_gpio_chip *mvchip = to_mvchip(pwm);
+
+ mvebu_gpio_blink(&mvchip->chip, pwm->pin, 0);
+}
+
+static const struct pwm_ops mvebu_pwm_ops = {
+ .request = mvebu_pwm_request,
+ .free = mvebu_pwm_free,
+ .config = mvebu_pwm_config,
+ .enable = mvebu_pwm_enable,
+ .disable = mvebu_pwm_disable,
+ .owner = THIS_MODULE,
+};
+
+void mvebu_pwm_suspend(struct mvebu_gpio_chip *mvchip)
+{
+ struct mvebu_pwm *pwm = &mvchip->pwm;
+
+ pwm->blink_select = readl_relaxed(mvebu_gpioreg_blink_select(mvchip));
+ pwm->blink_on_duration =
+ readl_relaxed(pwm->membase + BLINK_ON_DURATION);
+ pwm->blink_off_duration =
+ readl_relaxed(pwm->membase + BLINK_OFF_DURATION);
+}
+
+void mvebu_pwm_resume(struct mvebu_gpio_chip *mvchip)
+{
+ struct mvebu_pwm *pwm = &mvchip->pwm;
+
+ writel_relaxed(pwm->blink_select, mvebu_gpioreg_blink_select(mvchip));
+ writel_relaxed(pwm->blink_on_duration,
+ pwm->membase + BLINK_ON_DURATION);
+ writel_relaxed(pwm->blink_off_duration,
+ pwm->membase + BLINK_OFF_DURATION);
+}
+
+/*
+ * Armada 370/XP has simple PWM support for gpio lines. Other SoCs
+ * don't have this hardware. So if we don't have the necessary
+ * resource, it is not an error.
+ */
+int mvebu_pwm_probe(struct platform_device *pdev,
+ struct mvebu_gpio_chip *mvchip,
+ int id)
+{
+ struct device *dev = &pdev->dev;
+ struct mvebu_pwm *pwm = &mvchip->pwm;
+ struct resource *res;
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pwm");
+ if (!res)
+ return 0;
+
+ mvchip->pwm.membase = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(mvchip->pwm.membase))
+ return PTR_ERR(mvchip->percpu_membase);
+
+ if (id < 0 || id > 1)
+ return -EINVAL;
+ pwm->id = id;
+
+ if (IS_ERR(mvchip->clk))
+ return PTR_ERR(mvchip->clk);
+
+ pwm->clk_rate = clk_get_rate(mvchip->clk);
+ if (!pwm->clk_rate) {
+ dev_err(dev, "failed to get clock rate\n");
+ return -EINVAL;
+ }
+
+ pwm->chip.dev = dev;
+ pwm->chip.ops = &mvebu_pwm_ops;
+ pwm->chip.base = mvchip->chip.base;
+ pwm->chip.npwm = mvchip->chip.ngpio;
+ pwm->chip.can_sleep = false;
+
+ spin_lock_init(&pwm->lock);
+
+ return pwmchip_add(&pwm->chip);
+}
--- a/drivers/gpio/gpio-mvebu.c
+++ b/drivers/gpio/gpio-mvebu.c
@@ -42,10 +42,11 @@
#include <linux/io.h>
#include <linux/of_irq.h>
#include <linux/of_device.h>
+#include <linux/pwm.h>
#include <linux/clk.h>
#include <linux/pinctrl/consumer.h>
#include <linux/irqchip/chained_irq.h>
-
+#include "gpio-mvebu.h"
/*
* GPIO unit register offsets.
*/
@@ -75,24 +76,6 @@
#define MVEBU_MAX_GPIO_PER_BANK 32
-struct mvebu_gpio_chip {
- struct gpio_chip chip;
- spinlock_t lock;
- void __iomem *membase;
- void __iomem *percpu_membase;
- int irqbase;
- struct irq_domain *domain;
- int soc_variant;
-
- /* Used to preserve GPIO registers across suspend/resume */
- u32 out_reg;
- u32 io_conf_reg;
- u32 blink_en_reg;
- u32 in_pol_reg;
- u32 edge_mask_regs[4];
- u32 level_mask_regs[4];
-};
-
/*
* Functions returning addresses of individual registers for a given
* GPIO controller.
@@ -228,7 +211,7 @@ static int mvebu_gpio_get(struct gpio_ch
return (u >> pin) & 1;
}
-static void mvebu_gpio_blink(struct gpio_chip *chip, unsigned pin, int value)
+void mvebu_gpio_blink(struct gpio_chip *chip, unsigned pin, int value)
{
struct mvebu_gpio_chip *mvchip =
container_of(chip, struct mvebu_gpio_chip, chip);
@@ -609,6 +592,8 @@ static int mvebu_gpio_suspend(struct pla
BUG();
}
+ mvebu_pwm_suspend(mvchip);
+
return 0;
}
@@ -652,6 +637,8 @@ static int mvebu_gpio_resume(struct plat
BUG();
}
+ mvebu_pwm_resume(mvchip);
+
return 0;
}
@@ -663,7 +650,6 @@ static int mvebu_gpio_probe(struct platf
struct resource *res;
struct irq_chip_generic *gc;
struct irq_chip_type *ct;
- struct clk *clk;
unsigned int ngpios;
int soc_variant;
int i, cpu, id;
@@ -693,10 +679,10 @@ static int mvebu_gpio_probe(struct platf
return id;
}
- clk = devm_clk_get(&pdev->dev, NULL);
+ mvchip->clk = devm_clk_get(&pdev->dev, NULL);
/* Not all SoCs require a clock.*/
- if (!IS_ERR(clk))
- clk_prepare_enable(clk);
+ if (!IS_ERR(mvchip->clk))
+ clk_prepare_enable(mvchip->clk);
mvchip->soc_variant = soc_variant;
mvchip->chip.label = dev_name(&pdev->dev);
@@ -830,7 +816,8 @@ static int mvebu_gpio_probe(struct platf
goto err_generic_chip;
}
- return 0;
+ /* Armada 370/XP has simple PWM support for gpio lines */
+ return mvebu_pwm_probe(pdev, mvchip, id);
err_generic_chip:
irq_remove_generic_chip(gc, IRQ_MSK(ngpios), IRQ_NOREQUEST,
--- /dev/null
+++ b/drivers/gpio/gpio-mvebu.h
@@ -0,0 +1,79 @@
+/*
+ * Interface between MVEBU GPIO driver and PWM driver for GPIO pins
+ *
+ * Copyright (C) 2015, Andrew Lunn <andrew@lunn.ch>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef MVEBU_GPIO_PWM_H
+#define MVEBU_GPIO_PWM_H
+
+#define BLINK_ON_DURATION 0x0
+#define BLINK_OFF_DURATION 0x4
+#define GPIO_BLINK_CNT_SELECT 0x0020
+
+struct mvebu_pwm {
+ void __iomem *membase;
+ unsigned long clk_rate;
+ bool used;
+ unsigned pin;
+ struct pwm_chip chip;
+ int id;
+ spinlock_t lock;
+
+ /* Used to preserve GPIO/PWM registers across suspend /
+ * resume */
+ u32 blink_select;
+ u32 blink_on_duration;
+ u32 blink_off_duration;
+};
+
+struct mvebu_gpio_chip {
+ struct gpio_chip chip;
+ spinlock_t lock;
+ void __iomem *membase;
+ void __iomem *percpu_membase;
+ int irqbase;
+ struct irq_domain *domain;
+ int soc_variant;
+ struct clk *clk;
+#ifdef CONFIG_PWM
+ struct mvebu_pwm pwm;
+#endif
+ /* Used to preserve GPIO registers across suspend/resume */
+ u32 out_reg;
+ u32 io_conf_reg;
+ u32 blink_en_reg;
+ u32 in_pol_reg;
+ u32 edge_mask_regs[4];
+ u32 level_mask_regs[4];
+};
+
+void mvebu_gpio_blink(struct gpio_chip *chip, unsigned pin, int value);
+
+#ifdef CONFIG_PWM
+int mvebu_pwm_probe(struct platform_device *pdev,
+ struct mvebu_gpio_chip *mvchip,
+ int id);
+void mvebu_pwm_suspend(struct mvebu_gpio_chip *mvchip);
+void mvebu_pwm_resume(struct mvebu_gpio_chip *mvchip);
+#else
+int mvebu_pwm_probe(struct platform_device *pdev,
+ struct mvebu_gpio_chip *mvchip,
+ int id)
+{
+ return 0;
+}
+
+void mvebu_pwm_suspend(struct mvebu_gpio_chip *mvchip)
+{
+}
+
+void mvebu_pwm_resume(struct mvebu_gpio_chip *mvchip)
+{
+}
+#endif
+#endif

52
target/linux/mvebu/patches-3.19/203-dt_bindings_extend_mvebu_gpio_documentation_with_pwm.patch
Unescape View File

@ -0,0 +1,52 @@
Document the optional parameters needed for PWM operation of gpio
lines.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
---
.../devicetree/bindings/gpio/gpio-mvebu.txt | 31 ++++++++++++++++++++++
1 file changed, 31 insertions(+)
--- a/Documentation/devicetree/bindings/gpio/gpio-mvebu.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio-mvebu.txt
@@ -38,6 +38,23 @@ Required properties:
- #gpio-cells: Should be two. The first cell is the pin number. The
second cell is reserved for flags, unused at the moment.
+Optional properties:
+
+In order to use the gpio lines in PWM mode, some additional optional
+properties are required. Only Armada 370 and XP supports these
+properties.
+
+- reg: an additional register set is needed, for the GPIO Blink
+ Counter on/off registers.
+
+- reg-names: Must contain an entry "pwm" corresponding to the
+ additional register range needed for pwm operation.
+
+- #pwm-cells: Should be two. The first cell is the pin number. The
+ second cell is reserved for flags, unused at the moment.
+
+- clocks: Must be a phandle to the clock for the gpio controller.
+
Example:
gpio0: gpio@d0018100 {
@@ -51,3 +68,17 @@ Example:
#interrupt-cells = <2>;
interrupts = <16>, <17>, <18>, <19>;
};
+
+ gpio1: gpio@18140 {
+ compatible = "marvell,orion-gpio";
+ reg = <0x18140 0x40>, <0x181c8 0x08>;
+ reg-names = "gpio", "pwm";
+ ngpios = <17>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ #pwm-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ interrupts = <87>, <88>, <89>;
+ clocks = <&coreclk 0>;
+ };

149
target/linux/mvebu/patches-3.19/204-mvebu_xp_add_pwm_properties_to_dtsi_files.patch
Unescape View File

@ -0,0 +1,149 @@
Add properties to the gpio nodes to allow them to be also used
as pwm lines.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
---
arch/arm/boot/dts/armada-370.dtsi | 10 ++++++++--
arch/arm/boot/dts/armada-xp-mv78230.dtsi | 10 ++++++++--
arch/arm/boot/dts/armada-xp-mv78260.dtsi | 8 ++++++--
arch/arm/boot/dts/armada-xp-mv78460.dtsi | 10 ++++++++--
4 files changed, 30 insertions(+), 8 deletions(-)
--- a/arch/arm/boot/dts/armada-370.dtsi
+++ b/arch/arm/boot/dts/armada-370.dtsi
@@ -123,24 +123,30 @@
gpio0: gpio@18100 {
compatible = "marvell,orion-gpio";
- reg = <0x18100 0x40>;
+ reg = <0x18100 0x40>, <0x181c0 0x08>;
+ reg-names = "gpio", "pwm";
ngpios = <32>;
gpio-controller;
#gpio-cells = <2>;
+ #pwm-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
interrupts = <82>, <83>, <84>, <85>;
+ clocks = <&coreclk 0>;
};
gpio1: gpio@18140 {
compatible = "marvell,orion-gpio";
- reg = <0x18140 0x40>;
+ reg = <0x18140 0x40>, <0x181c8 0x08>;
+ reg-names = "gpio", "pwm";
ngpios = <32>;
gpio-controller;
#gpio-cells = <2>;
+ #pwm-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
interrupts = <87>, <88>, <89>, <90>;
+ clocks = <&coreclk 0>;
};
gpio2: gpio@18180 {
--- a/arch/arm/boot/dts/armada-xp-mv78230.dtsi
+++ b/arch/arm/boot/dts/armada-xp-mv78230.dtsi
@@ -169,24 +169,30 @@
internal-regs {
gpio0: gpio@18100 {
compatible = "marvell,orion-gpio";
- reg = <0x18100 0x40>;
+ reg = <0x18100 0x40>, <0x181c0 0x08>;
+ reg-names = "gpio", "pwm";
ngpios = <32>;
gpio-controller;
#gpio-cells = <2>;
+ #pwm-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
interrupts = <82>, <83>, <84>, <85>;
+ clocks = <&coreclk 0>;
};
gpio1: gpio@18140 {
compatible = "marvell,orion-gpio";
- reg = <0x18140 0x40>;
+ reg = <0x18140 0x40>, <0x181c8 0x08>;
+ reg-names = "gpio", "pwm";
ngpios = <17>;
gpio-controller;
#gpio-cells = <2>;
+ #pwm-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
interrupts = <87>, <88>, <89>;
+ clocks = <&coreclk 0>;
};
};
};
--- a/arch/arm/boot/dts/armada-xp-mv78260.dtsi
+++ b/arch/arm/boot/dts/armada-xp-mv78260.dtsi
@@ -253,24 +253,28 @@
internal-regs {
gpio0: gpio@18100 {
compatible = "marvell,orion-gpio";
- reg = <0x18100 0x40>;
+ reg = <0x18100 0x40>, <0x181c0 0x08>;
+ reg-names = "gpio", "pwm";
ngpios = <32>;
gpio-controller;
#gpio-cells = <2>;
+ #pwm-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
interrupts = <82>, <83>, <84>, <85>;
+ clocks = <&coreclk 0>;
};
gpio1: gpio@18140 {
compatible = "marvell,orion-gpio";
- reg = <0x18140 0x40>;
+ reg = <0x18140 0x40>, <0x181c8 0x08>;
ngpios = <32>;
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
interrupts = <87>, <88>, <89>, <90>;
+ clocks = <&coreclk 0>;
};
gpio2: gpio@18180 {
--- a/arch/arm/boot/dts/armada-xp-mv78460.dtsi
+++ b/arch/arm/boot/dts/armada-xp-mv78460.dtsi
@@ -291,24 +291,30 @@
internal-regs {
gpio0: gpio@18100 {
compatible = "marvell,orion-gpio";
- reg = <0x18100 0x40>;
+ reg = <0x18100 0x40>, <0x181c0 0x08>;
+ reg-names = "gpio", "pwm";
ngpios = <32>;
gpio-controller;
#gpio-cells = <2>;
+ #pwm-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
interrupts = <82>, <83>, <84>, <85>;
+ clocks = <&coreclk 0>;
};
gpio1: gpio@18140 {
compatible = "marvell,orion-gpio";
- reg = <0x18140 0x40>;
+ reg = <0x18140 0x40>, <0x181c8 0x08>;
+ reg-names = "gpio", "pwm";
ngpios = <32>;
gpio-controller;
#gpio-cells = <2>;
+ #pwm-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
interrupts = <87>, <88>, <89>, <90>;
+ clocks = <&coreclk 0>;
};
gpio2: gpio@18180 {

18
target/linux/mvebu/patches-3.19/205-arm_mvebu_enable_pwm_in_defconfig.patch
Unescape View File

@ -0,0 +1,18 @@
Now that the gpio driver also supports PWM operation, enable
the PWM framework in mvebu_v7_defconfig.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
---
arch/arm/configs/mvebu_v7_defconfig | 1 +
1 file changed, 1 insertion(+)
--- a/arch/arm/configs/mvebu_v7_defconfig
+++ b/arch/arm/configs/mvebu_v7_defconfig
@@ -116,6 +116,7 @@ CONFIG_DMADEVICES=y
CONFIG_MV_XOR=y
# CONFIG_IOMMU_SUPPORT is not set
CONFIG_MEMORY=y
+CONFIG_PWM=y
CONFIG_EXT4_FS=y
CONFIG_ISO9660_FS=y
CONFIG_JOLIET=y

28
target/linux/mvebu/patches-3.19/206-mvebu_wrt1900ac_use_pwm-fan_rather_than_gpio-fan.patch
Unescape View File

@ -0,0 +1,28 @@
The mvebu gpio driver can also perform PWM on some pins. Us the
pwm-fan driver to control the fan of the WRT1900AC, giving us fine
grain control over its speed and hence noise.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
---
arch/arm/boot/dts/armada-xp-wrt1900ac.dts | 8 +++-----
1 file changed, 3 insertions(+), 5 deletions(-)
--- a/arch/arm/boot/dts/armada-xp-mamba.dts
+++ b/arch/arm/boot/dts/armada-xp-mamba.dts
@@ -302,13 +302,11 @@
};
};
- gpio_fan {
+ pwm_fan {
/* SUNON HA4010V4-0000-C99 */
- compatible = "gpio-fan";
- gpios = <&gpio0 24 0>;
- gpio-fan,speed-map = <0 0
- 4500 1>;
+ compatible = "pwm-fan";
+ pwms = <&gpio0 24 4000 0>;
};
mvsw61xx {
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