#
-# Copyright (C) 2006-2009 OpenWrt.org
+# Copyright (C) 2006-2011 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
ARCH:=arm
BOARD:=imx21
BOARDNAME:=Freescale i.MX21
-FEATURES:=jffs2
+FEATURES:=jffs2 broken
CFLAGS:=-Os -pipe -march=armv5te -mtune=arm926ej-s -funit-at-a-time
-LINUX_VERSION:=2.6.34.8
+LINUX_VERSION:=2.6.37.3
DEVICE_TYPE=phone
+++ /dev/null
-CONFIG_ALIGNMENT_TRAP=y
-# CONFIG_ARCH_MX1 is not set
-CONFIG_ARCH_MX2=y
-# CONFIG_ARCH_MX25 is not set
-# CONFIG_ARCH_MX3 is not set
-# CONFIG_ARCH_MX5 is not set
-CONFIG_ARCH_MXC=y
-# CONFIG_ARCH_MXC91231 is not set
-CONFIG_ARCH_MXC_AUDMUX_V1=y
-CONFIG_ARCH_REQUIRE_GPIOLIB=y
-# CONFIG_ARCH_SELECT_MEMORY_MODEL is not set
-# CONFIG_ARCH_SPARSEMEM_DEFAULT is not set
-# CONFIG_ARCH_SUPPORTS_MSI is not set
-CONFIG_ARCH_SUSPEND_POSSIBLE=y
-CONFIG_ARM=y
-CONFIG_ARM_L1_CACHE_SHIFT=5
-CONFIG_ARM_THUMB=y
-CONFIG_BITREVERSE=y
-# CONFIG_BLK_DEV is not set
-# CONFIG_BLK_DEV_INITRD is not set
-# CONFIG_BSD_PROCESS_ACCT is not set
-CONFIG_CMDLINE="unused -- bootloader passes ATAG list"
-CONFIG_COMMON_CLKDEV=y
-CONFIG_COMPAT_BRK=y
-CONFIG_CPU_32v5=y
-CONFIG_CPU_ABRT_EV5TJ=y
-CONFIG_CPU_ARM926T=y
-# CONFIG_CPU_CACHE_ROUND_ROBIN is not set
-CONFIG_CPU_CACHE_VIVT=y
-CONFIG_CPU_COPY_V4WB=y
-CONFIG_CPU_CP15=y
-CONFIG_CPU_CP15_MMU=y
-# CONFIG_CPU_DCACHE_WRITETHROUGH is not set
-# CONFIG_CPU_ICACHE_DISABLE is not set
-CONFIG_CPU_PABRT_LEGACY=y
-CONFIG_CPU_TLB_V4WBI=y
-CONFIG_DEBUG_BUGVERBOSE=y
-# CONFIG_DEBUG_USER is not set
-CONFIG_DECOMPRESS_LZMA=y
-CONFIG_DEVTMPFS=y
-CONFIG_DEVTMPFS_MOUNT=y
-# CONFIG_FPE_FASTFPE is not set
-# CONFIG_FPE_NWFPE is not set
-CONFIG_FRAME_POINTER=y
-# CONFIG_FSNOTIFY is not set
-CONFIG_GENERIC_ATOMIC64=y
-CONFIG_GENERIC_CLOCKEVENTS=y
-CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
-CONFIG_GENERIC_FIND_LAST_BIT=y
-CONFIG_GENERIC_GPIO=y
-CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y
-CONFIG_GPIOLIB=y
-# CONFIG_GPIO_IT8761E is not set
-CONFIG_GPIO_SYSFS=y
-CONFIG_HARDIRQS_SW_RESEND=y
-CONFIG_HAS_DMA=y
-CONFIG_HAS_IOMEM=y
-CONFIG_HAS_IOPORT=y
-CONFIG_HAVE_AOUT=y
-CONFIG_HAVE_ARCH_KGDB=y
-CONFIG_HAVE_CLK=y
-CONFIG_HAVE_FUNCTION_TRACER=y
-CONFIG_HAVE_GENERIC_DMA_COHERENT=y
-CONFIG_HAVE_IDE=y
-CONFIG_HAVE_KERNEL_GZIP=y
-CONFIG_HAVE_KERNEL_LZMA=y
-CONFIG_HAVE_KERNEL_LZO=y
-CONFIG_HAVE_KPROBES=y
-CONFIG_HAVE_KRETPROBES=y
-CONFIG_HAVE_LATENCYTOP_SUPPORT=y
-CONFIG_HAVE_OPROFILE=y
-CONFIG_HAVE_PERF_EVENTS=y
-CONFIG_HAVE_PROC_CPU=y
-# CONFIG_HW_RANDOM is not set
-CONFIG_IMX_HAVE_IOMUX_V1=y
-CONFIG_INPUT=y
-CONFIG_INPUT_EVDEV=y
-CONFIG_INPUT_KEYBOARD=y
-# CONFIG_INPUT_MISC is not set
-# CONFIG_ISDN_CAPI is not set
-# CONFIG_ISDN_DRV_GIGASET is not set
-# CONFIG_ISDN_I4L is not set
-CONFIG_KEYBOARD_ATKBD=y
-CONFIG_KEYBOARD_GPIO=y
-CONFIG_KEYBOARD_IMX=y
-# CONFIG_KEYBOARD_LKKBD is not set
-# CONFIG_KEYBOARD_MATRIX is not set
-# CONFIG_KEYBOARD_NEWTON is not set
-# CONFIG_KEYBOARD_STOWAWAY is not set
-# CONFIG_KEYBOARD_SUNKBD is not set
-# CONFIG_KEYBOARD_XTKBD is not set
-CONFIG_LEDS_GPIO=y
-# CONFIG_LEDS_TRIGGER_NETDEV is not set
-# CONFIG_LKDTM is not set
-CONFIG_MACH_MX21=y
-# CONFIG_MACH_MX21ADS is not set
-# CONFIG_MACH_MX27 is not set
-CONFIG_MACH_VP6500=y
-# CONFIG_MFD_T7L66XB is not set
-# CONFIG_MTD_CFI_INTELEXT is not set
-CONFIG_MTD_CMDLINE_PARTS=y
-CONFIG_MTD_PHYSMAP=y
-# CONFIG_MXC_IRQ_PRIOR is not set
-# CONFIG_MXC_PWM is not set
-CONFIG_NEED_DMA_MAP_STATE=y
-# CONFIG_NETDEV_1000 is not set
-# CONFIG_NET_ETHERNET is not set
-CONFIG_PAGEFLAGS_EXTENDED=y
-CONFIG_PAGE_OFFSET=0xC0000000
-# CONFIG_PCI_SYSCALL is not set
-CONFIG_PERF_USE_VMALLOC=y
-CONFIG_RATIONAL=y
-# CONFIG_SCSI_DMA is not set
-CONFIG_SCSI_MOD=y
-# CONFIG_SERIAL_8250 is not set
-CONFIG_SERIAL_IMX=y
-CONFIG_SERIAL_IMX_CONSOLE=y
-CONFIG_SERIO=y
-# CONFIG_SERIO_ALTERA_PS2 is not set
-CONFIG_SERIO_LIBPS2=y
-# CONFIG_SERIO_RAW is not set
-CONFIG_SERIO_SERPORT=y
-CONFIG_SPLIT_PTLOCK_CPUS=999999
-CONFIG_SYS_SUPPORTS_APM_EMULATION=y
-# CONFIG_TREE_PREEMPT_RCU is not set
-# CONFIG_UID16 is not set
-CONFIG_VECTORS_BASE=0xffff0000
-# CONFIG_VFP is not set
-# CONFIG_WATCHDOG is not set
-CONFIG_ZBOOT_ROM_BSS=0x0
-CONFIG_ZBOOT_ROM_TEXT=0x0
-CONFIG_ZONE_DMA_FLAG=0
--- /dev/null
+CONFIG_ALIGNMENT_TRAP=y
+# CONFIG_ARCH_MX1 is not set
+CONFIG_ARCH_MX2=y
+# CONFIG_ARCH_MX25 is not set
+# CONFIG_ARCH_MX3 is not set
+# CONFIG_ARCH_MX5 is not set
+CONFIG_ARCH_MXC=y
+# CONFIG_ARCH_MXC91231 is not set
+CONFIG_ARCH_MXC_AUDMUX_V1=y
+CONFIG_ARCH_REQUIRE_GPIOLIB=y
+# CONFIG_ARCH_SELECT_MEMORY_MODEL is not set
+# CONFIG_ARCH_SPARSEMEM_DEFAULT is not set
+# CONFIG_ARCH_SUPPORTS_MSI is not set
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_ARM=y
+CONFIG_ARM_L1_CACHE_SHIFT=5
+CONFIG_ARM_THUMB=y
+CONFIG_BITREVERSE=y
+# CONFIG_BLK_DEV is not set
+# CONFIG_BLK_DEV_INITRD is not set
+# CONFIG_BSD_PROCESS_ACCT is not set
+CONFIG_CMDLINE="unused -- bootloader passes ATAG list"
+CONFIG_COMMON_CLKDEV=y
+CONFIG_COMPAT_BRK=y
+CONFIG_CPU_32v5=y
+CONFIG_CPU_ABRT_EV5TJ=y
+CONFIG_CPU_ARM926T=y
+# CONFIG_CPU_CACHE_ROUND_ROBIN is not set
+CONFIG_CPU_CACHE_VIVT=y
+CONFIG_CPU_COPY_V4WB=y
+CONFIG_CPU_CP15=y
+CONFIG_CPU_CP15_MMU=y
+# CONFIG_CPU_DCACHE_WRITETHROUGH is not set
+# CONFIG_CPU_ICACHE_DISABLE is not set
+CONFIG_CPU_PABRT_LEGACY=y
+CONFIG_CPU_TLB_V4WBI=y
+CONFIG_DEBUG_BUGVERBOSE=y
+# CONFIG_DEBUG_USER is not set
+CONFIG_DECOMPRESS_LZMA=y
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+# CONFIG_FPE_FASTFPE is not set
+# CONFIG_FPE_NWFPE is not set
+CONFIG_FRAME_POINTER=y
+# CONFIG_FSNOTIFY is not set
+CONFIG_GENERIC_ATOMIC64=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
+CONFIG_GENERIC_FIND_LAST_BIT=y
+CONFIG_GENERIC_GPIO=y
+CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y
+CONFIG_GPIOLIB=y
+# CONFIG_GPIO_IT8761E is not set
+CONFIG_GPIO_SYSFS=y
+CONFIG_HARDIRQS_SW_RESEND=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
+CONFIG_HAVE_AOUT=y
+CONFIG_HAVE_ARCH_KGDB=y
+CONFIG_HAVE_CLK=y
+CONFIG_HAVE_FUNCTION_TRACER=y
+CONFIG_HAVE_GENERIC_DMA_COHERENT=y
+CONFIG_HAVE_IDE=y
+CONFIG_HAVE_KERNEL_GZIP=y
+CONFIG_HAVE_KERNEL_LZMA=y
+CONFIG_HAVE_KERNEL_LZO=y
+CONFIG_HAVE_KPROBES=y
+CONFIG_HAVE_KRETPROBES=y
+CONFIG_HAVE_LATENCYTOP_SUPPORT=y
+CONFIG_HAVE_OPROFILE=y
+CONFIG_HAVE_PERF_EVENTS=y
+CONFIG_HAVE_PROC_CPU=y
+# CONFIG_HW_RANDOM is not set
+CONFIG_IMX_HAVE_IOMUX_V1=y
+CONFIG_INPUT=y
+CONFIG_INPUT_EVDEV=y
+CONFIG_INPUT_KEYBOARD=y
+# CONFIG_INPUT_MISC is not set
+# CONFIG_ISDN_CAPI is not set
+# CONFIG_ISDN_DRV_GIGASET is not set
+# CONFIG_ISDN_I4L is not set
+CONFIG_KEYBOARD_ATKBD=y
+CONFIG_KEYBOARD_GPIO=y
+CONFIG_KEYBOARD_IMX=y
+# CONFIG_KEYBOARD_LKKBD is not set
+# CONFIG_KEYBOARD_MATRIX is not set
+# CONFIG_KEYBOARD_NEWTON is not set
+# CONFIG_KEYBOARD_STOWAWAY is not set
+# CONFIG_KEYBOARD_SUNKBD is not set
+# CONFIG_KEYBOARD_XTKBD is not set
+CONFIG_LEDS_GPIO=y
+# CONFIG_LEDS_TRIGGER_NETDEV is not set
+# CONFIG_LKDTM is not set
+CONFIG_MACH_MX21=y
+# CONFIG_MACH_MX21ADS is not set
+# CONFIG_MACH_MX27 is not set
+CONFIG_MACH_VP6500=y
+# CONFIG_MFD_T7L66XB is not set
+# CONFIG_MTD_CFI_INTELEXT is not set
+CONFIG_MTD_CMDLINE_PARTS=y
+CONFIG_MTD_PHYSMAP=y
+# CONFIG_MXC_DEBUG_BOARD is not set
+# CONFIG_MXC_IRQ_PRIOR is not set
+# CONFIG_MXC_PWM is not set
+CONFIG_NEED_DMA_MAP_STATE=y
+# CONFIG_NETDEV_1000 is not set
+# CONFIG_NET_ETHERNET is not set
+CONFIG_PAGEFLAGS_EXTENDED=y
+CONFIG_PAGE_OFFSET=0xC0000000
+# CONFIG_PCI_SYSCALL is not set
+CONFIG_PERF_USE_VMALLOC=y
+CONFIG_RATIONAL=y
+# CONFIG_SCSI_DMA is not set
+CONFIG_SCSI_MOD=y
+# CONFIG_SERIAL_8250 is not set
+CONFIG_SERIAL_IMX=y
+CONFIG_SERIAL_IMX_CONSOLE=y
+CONFIG_SERIO=y
+# CONFIG_SERIO_ALTERA_PS2 is not set
+CONFIG_SERIO_LIBPS2=y
+# CONFIG_SERIO_RAW is not set
+CONFIG_SERIO_SERPORT=y
+CONFIG_SPLIT_PTLOCK_CPUS=999999
+CONFIG_SYS_SUPPORTS_APM_EMULATION=y
+# CONFIG_TREE_PREEMPT_RCU is not set
+# CONFIG_UID16 is not set
+CONFIG_VECTORS_BASE=0xffff0000
+# CONFIG_VFP is not set
+# CONFIG_WATCHDOG is not set
+CONFIG_ZBOOT_ROM_BSS=0x0
+CONFIG_ZBOOT_ROM_TEXT=0x0
+CONFIG_ZONE_DMA_FLAG=0
+++ /dev/null
---- a/arch/arm/mach-mx2/Kconfig
-+++ b/arch/arm/mach-mx2/Kconfig
-@@ -27,6 +27,12 @@ config MACH_MX21ADS
- Include support for MX21ADS platform. This includes specific
- configurations for the board and its peripherals.
-
-+config MACH_VP6500
-+ bool "Phillips VP6500 VoIP phone"
-+ depends on MACH_MX21
-+ help
-+ Include support for the Phillips VP6500 VoIP phone.
-+
- config MACH_MX27ADS
- bool "MX27ADS platform"
- depends on MACH_MX27
---- a/arch/arm/mach-mx2/Makefile
-+++ b/arch/arm/mach-mx2/Makefile
-@@ -21,3 +21,4 @@ obj-$(CONFIG_MACH_CPUIMX27) += mach-cpui
- obj-$(CONFIG_MACH_EUKREA_MBIMX27_BASEBOARD) += eukrea_mbimx27-baseboard.o
- obj-$(CONFIG_MACH_PCA100) += mach-pca100.o
- obj-$(CONFIG_MACH_MXT_TD60) += mach-mxt_td60.o
-+obj-$(CONFIG_MACH_VP6500) += mach-vp6500.o
+++ /dev/null
---- a/arch/arm/tools/mach-types
-+++ b/arch/arm/tools/mach-types
-@@ -530,7 +530,7 @@ sg560 MACH_SG560 SG560 513
- dp1000 MACH_DP1000 DP1000 514
- omap_osk MACH_OMAP_OSK OMAP_OSK 515
- rg100v3 MACH_RG100V3 RG100V3 516
--mx2ads MACH_MX2ADS MX2ADS 517
-+vp6500 MACH_VP6500 VP6500 517
- pxa_kilo MACH_PXA_KILO PXA_KILO 518
- ixp4xx_eagle MACH_IXP4XX_EAGLE IXP4XX_EAGLE 519
- tosa MACH_TOSA TOSA 520
+++ /dev/null
---- a/arch/arm/plat-mxc/pwm.c
-+++ b/arch/arm/plat-mxc/pwm.c
-@@ -25,6 +25,11 @@
- #define MX1_PWMS 0x04 /* PWM Sample Register */
- #define MX1_PWMP 0x08 /* PWM Period Register */
-
-+#define MX1_PWMC_EN (1 << 4)
-+#define MX1_PWMC_PRESCALER_MASK (0x7f << 8)
-+#define MX1_PWMC_PRESCALER(x) ((x & 0x7f) << 8)
-+#define MX1_PWMC_CLKSEL_MASK 0x3
-+#define MX1_PWMC_CLKSEL(x) ((x & 0x3))
-
- /* i.MX27, i.MX31, i.MX35 share the same PWM function block: */
-
-@@ -54,26 +59,33 @@ struct pwm_device {
-
- int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns)
- {
-+ unsigned long long c;
-+ unsigned long period_cycles, duty_cycles, prescale;
-+
- if (pwm == NULL || period_ns == 0 || duty_ns > period_ns)
- return -EINVAL;
-
-+ c = clk_get_rate(pwm->clk);
-+
-+ c = c * period_ns;
-+
-+ if (cpu_is_mx1() || cpu_is_mx2())
-+ c >>= 1;
-+
-+ do_div(c, 1000000000);
-+ period_cycles = c;
-+
-+ prescale = period_cycles / 0x10000 + 1;
-+
-+ period_cycles /= prescale;
-+ c = (unsigned long long)period_cycles * duty_ns;
-+ do_div(c, period_ns);
-+ duty_cycles = c;
-+
-+
- if (cpu_is_mx27() || cpu_is_mx3() || cpu_is_mx25()) {
-- unsigned long long c;
-- unsigned long period_cycles, duty_cycles, prescale;
- u32 cr;
-
-- c = clk_get_rate(pwm->clk);
-- c = c * period_ns;
-- do_div(c, 1000000000);
-- period_cycles = c;
--
-- prescale = period_cycles / 0x10000 + 1;
--
-- period_cycles /= prescale;
-- c = (unsigned long long)period_cycles * duty_ns;
-- do_div(c, period_ns);
-- duty_cycles = c;
--
- writel(duty_cycles, pwm->mmio_base + MX3_PWMSAR);
- writel(period_cycles, pwm->mmio_base + MX3_PWMPR);
-
-@@ -86,25 +98,28 @@ int pwm_config(struct pwm_device *pwm, i
-
- writel(cr, pwm->mmio_base + MX3_PWMCR);
- } else if (cpu_is_mx1() || cpu_is_mx21()) {
-- /* The PWM subsystem allows for exact frequencies. However,
-- * I cannot connect a scope on my device to the PWM line and
-- * thus cannot provide the program the PWM controller
-- * exactly. Instead, I'm relying on the fact that the
-- * Bootloader (u-boot or WinCE+haret) has programmed the PWM
-- * function group already. So I'll just modify the PWM sample
-- * register to follow the ratio of duty_ns vs. period_ns
-- * accordingly.
-- *
-- * This is good enough for programming the brightness of
-- * the LCD backlight.
-- *
-- * The real implementation would divide PERCLK[0] first by
-- * both the prescaler (/1 .. /128) and then by CLKSEL
-- * (/2 .. /16).
-- */
-- u32 max = readl(pwm->mmio_base + MX1_PWMP);
-- u32 p = max * duty_ns / period_ns;
-- writel(max - p, pwm->mmio_base + MX1_PWMS);
-+ unsigned long clksel = 0;
-+ u32 ctrl;
-+
-+ while (prescale >= 0x80 && clksel < 4) {
-+ prescale >>= 1;
-+ ++clksel;
-+ }
-+
-+ if (clksel > 3)
-+ return -EINVAL;
-+
-+ ctrl = readl(pwm->mmio_base + MX1_PWMC);
-+ writel(ctrl & ~MX1_PWMC_EN, pwm->mmio_base + MX1_PWMC);
-+
-+ writel(duty_cycles, pwm->mmio_base + MX1_PWMS);
-+ writel(period_cycles, pwm->mmio_base + MX1_PWMP);
-+
-+ ctrl &= ~(MX1_PWMC_PRESCALER_MASK | MX1_PWMC_CLKSEL_MASK);
-+ ctrl |= MX1_PWMC_PRESCALER(prescale);
-+ ctrl |= MX1_PWMC_CLKSEL(clksel);
-+ writel(ctrl, pwm->mmio_base + MX1_PWMC);
-+
- } else {
- BUG();
- }
-@@ -116,6 +131,11 @@ EXPORT_SYMBOL(pwm_config);
- int pwm_enable(struct pwm_device *pwm)
- {
- int rc = 0;
-+ if (cpu_is_mx1() || cpu_is_mx2()) {
-+ u32 ctrl;
-+ ctrl = readl(pwm->mmio_base + MX1_PWMC);
-+ writel(ctrl | MX1_PWMC_EN, pwm->mmio_base + MX1_PWMC);
-+ }
-
- if (!pwm->clk_enabled) {
- rc = clk_enable(pwm->clk);
-@@ -128,7 +148,13 @@ EXPORT_SYMBOL(pwm_enable);
-
- void pwm_disable(struct pwm_device *pwm)
- {
-- writel(0, pwm->mmio_base + MX3_PWMCR);
-+ if (cpu_is_mx27() || cpu_is_mx3() || cpu_is_mx25()) {
-+ writel(0, pwm->mmio_base + MX3_PWMCR);
-+ } else if (cpu_is_mx1() || cpu_is_mx2()) {
-+ u32 ctrl;
-+ ctrl = readl(pwm->mmio_base + MX1_PWMC);
-+ writel(ctrl & ~MX1_PWMC_EN, pwm->mmio_base + MX1_PWMC);
-+ }
-
- if (pwm->clk_enabled) {
- clk_disable(pwm->clk);
--- /dev/null
+--- a/arch/arm/mach-imx/Kconfig
++++ b/arch/arm/mach-imx/Kconfig
+@@ -83,6 +83,12 @@ if MACH_MX27
+
+ comment "MX27 platforms:"
+
++config MACH_VP6500
++ bool "Phillips VP6500 VoIP phone"
++ depends on MACH_MX21
++ help
++ Include support for the Phillips VP6500 VoIP phone.
++
+ config MACH_MX27ADS
+ bool "MX27ADS platform"
+ select IMX_HAVE_PLATFORM_IMX_I2C
+--- a/arch/arm/mach-imx/Makefile
++++ b/arch/arm/mach-imx/Makefile
+@@ -32,3 +32,4 @@ obj-$(CONFIG_MACH_CPUIMX27) += mach-cpui
+ obj-$(CONFIG_MACH_EUKREA_MBIMX27_BASEBOARD) += eukrea_mbimx27-baseboard.o
+ obj-$(CONFIG_MACH_PCA100) += mach-pca100.o
+ obj-$(CONFIG_MACH_MXT_TD60) += mach-mxt_td60.o
++obj-$(CONFIG_MACH_VP6500) += mach-vp6500.o
--- /dev/null
+--- a/arch/arm/tools/mach-types
++++ b/arch/arm/tools/mach-types
+@@ -530,7 +530,7 @@ sg560 MACH_SG560 SG560 513
+ dp1000 MACH_DP1000 DP1000 514
+ omap_osk MACH_OMAP_OSK OMAP_OSK 515
+ rg100v3 MACH_RG100V3 RG100V3 516
+-mx2ads MACH_MX2ADS MX2ADS 517
++vp6500 MACH_VP6500 VP6500 517
+ pxa_kilo MACH_PXA_KILO PXA_KILO 518
+ ixp4xx_eagle MACH_IXP4XX_EAGLE IXP4XX_EAGLE 519
+ tosa MACH_TOSA TOSA 520
--- /dev/null
+--- a/arch/arm/plat-mxc/pwm.c
++++ b/arch/arm/plat-mxc/pwm.c
+@@ -25,6 +25,11 @@
+ #define MX1_PWMS 0x04 /* PWM Sample Register */
+ #define MX1_PWMP 0x08 /* PWM Period Register */
+
++#define MX1_PWMC_EN (1 << 4)
++#define MX1_PWMC_PRESCALER_MASK (0x7f << 8)
++#define MX1_PWMC_PRESCALER(x) ((x & 0x7f) << 8)
++#define MX1_PWMC_CLKSEL_MASK 0x3
++#define MX1_PWMC_CLKSEL(x) ((x & 0x3))
+
+ /* i.MX27, i.MX31, i.MX35 share the same PWM function block: */
+
+@@ -54,26 +59,33 @@ struct pwm_device {
+
+ int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns)
+ {
++ unsigned long long c;
++ unsigned long period_cycles, duty_cycles, prescale;
++
+ if (pwm == NULL || period_ns == 0 || duty_ns > period_ns)
+ return -EINVAL;
+
++ c = clk_get_rate(pwm->clk);
++
++ c = c * period_ns;
++
++ if (cpu_is_mx1() || cpu_is_mx2())
++ c >>= 1;
++
++ do_div(c, 1000000000);
++ period_cycles = c;
++
++ prescale = period_cycles / 0x10000 + 1;
++
++ period_cycles /= prescale;
++ c = (unsigned long long)period_cycles * duty_ns;
++ do_div(c, period_ns);
++ duty_cycles = c;
++
++
+ if (cpu_is_mx27() || cpu_is_mx3() || cpu_is_mx25()) {
+- unsigned long long c;
+- unsigned long period_cycles, duty_cycles, prescale;
+ u32 cr;
+
+- c = clk_get_rate(pwm->clk);
+- c = c * period_ns;
+- do_div(c, 1000000000);
+- period_cycles = c;
+-
+- prescale = period_cycles / 0x10000 + 1;
+-
+- period_cycles /= prescale;
+- c = (unsigned long long)period_cycles * duty_ns;
+- do_div(c, period_ns);
+- duty_cycles = c;
+-
+ writel(duty_cycles, pwm->mmio_base + MX3_PWMSAR);
+ writel(period_cycles, pwm->mmio_base + MX3_PWMPR);
+
+@@ -86,25 +98,28 @@ int pwm_config(struct pwm_device *pwm, i
+
+ writel(cr, pwm->mmio_base + MX3_PWMCR);
+ } else if (cpu_is_mx1() || cpu_is_mx21()) {
+- /* The PWM subsystem allows for exact frequencies. However,
+- * I cannot connect a scope on my device to the PWM line and
+- * thus cannot provide the program the PWM controller
+- * exactly. Instead, I'm relying on the fact that the
+- * Bootloader (u-boot or WinCE+haret) has programmed the PWM
+- * function group already. So I'll just modify the PWM sample
+- * register to follow the ratio of duty_ns vs. period_ns
+- * accordingly.
+- *
+- * This is good enough for programming the brightness of
+- * the LCD backlight.
+- *
+- * The real implementation would divide PERCLK[0] first by
+- * both the prescaler (/1 .. /128) and then by CLKSEL
+- * (/2 .. /16).
+- */
+- u32 max = readl(pwm->mmio_base + MX1_PWMP);
+- u32 p = max * duty_ns / period_ns;
+- writel(max - p, pwm->mmio_base + MX1_PWMS);
++ unsigned long clksel = 0;
++ u32 ctrl;
++
++ while (prescale >= 0x80 && clksel < 4) {
++ prescale >>= 1;
++ ++clksel;
++ }
++
++ if (clksel > 3)
++ return -EINVAL;
++
++ ctrl = readl(pwm->mmio_base + MX1_PWMC);
++ writel(ctrl & ~MX1_PWMC_EN, pwm->mmio_base + MX1_PWMC);
++
++ writel(duty_cycles, pwm->mmio_base + MX1_PWMS);
++ writel(period_cycles, pwm->mmio_base + MX1_PWMP);
++
++ ctrl &= ~(MX1_PWMC_PRESCALER_MASK | MX1_PWMC_CLKSEL_MASK);
++ ctrl |= MX1_PWMC_PRESCALER(prescale);
++ ctrl |= MX1_PWMC_CLKSEL(clksel);
++ writel(ctrl, pwm->mmio_base + MX1_PWMC);
++
+ } else {
+ BUG();
+ }
+@@ -116,6 +131,11 @@ EXPORT_SYMBOL(pwm_config);
+ int pwm_enable(struct pwm_device *pwm)
+ {
+ int rc = 0;
++ if (cpu_is_mx1() || cpu_is_mx2()) {
++ u32 ctrl;
++ ctrl = readl(pwm->mmio_base + MX1_PWMC);
++ writel(ctrl | MX1_PWMC_EN, pwm->mmio_base + MX1_PWMC);
++ }
+
+ if (!pwm->clk_enabled) {
+ rc = clk_enable(pwm->clk);
+@@ -128,7 +148,13 @@ EXPORT_SYMBOL(pwm_enable);
+
+ void pwm_disable(struct pwm_device *pwm)
+ {
+- writel(0, pwm->mmio_base + MX3_PWMCR);
++ if (cpu_is_mx27() || cpu_is_mx3() || cpu_is_mx25()) {
++ writel(0, pwm->mmio_base + MX3_PWMCR);
++ } else if (cpu_is_mx1() || cpu_is_mx2()) {
++ u32 ctrl;
++ ctrl = readl(pwm->mmio_base + MX1_PWMC);
++ writel(ctrl & ~MX1_PWMC_EN, pwm->mmio_base + MX1_PWMC);
++ }
+
+ if (pwm->clk_enabled) {
+ clk_disable(pwm->clk);
projects / openwrt / staging / xback.git / commitdiff