diff options
Diffstat (limited to 'target/linux')
| -rw-r--r-- | target/linux/ep93xx/config-3.8 | 201 | ||||
| -rw-r--r-- | target/linux/ep93xx/patches-3.8/001-ep93xx_cpuinfo.patch | 70 | ||||
| -rw-r--r-- | target/linux/ep93xx/patches-3.8/003-ep93xx_touchscreen.patch | 1072 | ||||
| -rw-r--r-- | target/linux/ep93xx/patches-3.8/004-simone_add_mmc_spi.patch | 178 |
4 files changed, 1521 insertions, 0 deletions
diff --git a/target/linux/ep93xx/config-3.8 b/target/linux/ep93xx/config-3.8 new file mode 100644 index 0000000000..c11d495990 --- /dev/null +++ b/target/linux/ep93xx/config-3.8 @@ -0,0 +1,201 @@ +CONFIG_ALIGNMENT_TRAP=y +CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE=y +CONFIG_ARCH_EP93XX=y +CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE=y +CONFIG_ARCH_HAS_HOLES_MEMORYMODEL=y +CONFIG_ARCH_HAVE_CUSTOM_GPIO_H=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_SUSPEND_POSSIBLE=y +CONFIG_ARCH_USES_GETTIMEOFFSET=y +# CONFIG_ARCH_VT8500_SINGLE is not set +CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y +CONFIG_ARM=y +CONFIG_ARM_AMBA=y +# CONFIG_ARM_CPU_SUSPEND is not set +CONFIG_ARM_L1_CACHE_SHIFT=5 +CONFIG_ARM_NR_BANKS=16 +CONFIG_ARM_PATCH_PHYS_VIRT=y +# CONFIG_ARM_SP805_WATCHDOG is not set +CONFIG_ARM_THUMB=y +CONFIG_ARM_VIC=y +CONFIG_ARM_VIC_NR=2 +# CONFIG_ARPD is not set +CONFIG_ATAGS=y +# CONFIG_BLK_DEV_INITRD is not set +# CONFIG_CACHE_L2X0 is not set +CONFIG_CC_OPTIMIZE_FOR_SIZE=y +CONFIG_CLKDEV_LOOKUP=y +CONFIG_CLONE_BACKWARDS=y +CONFIG_CMDLINE="console=ttyAM0,57600 init=/etc/preinit" +CONFIG_CMDLINE_FROM_BOOTLOADER=y +CONFIG_CONSOLE_TRANSLATIONS=y +CONFIG_CPU_32v4T=y +CONFIG_CPU_ABRT_EV4T=y +CONFIG_CPU_ARM920T=y +CONFIG_CPU_CACHE_V4WT=y +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_CPU_USE_DOMAINS=y +CONFIG_CRC7=y +CONFIG_CRC_ITU_T=y +CONFIG_CRUNCH=y +CONFIG_DEBUG_LL_INCLUDE="mach/debug-macro.S" +# CONFIG_DEBUG_USER is not set +CONFIG_DUMMY_CONSOLE=y +# CONFIG_ENABLE_WARN_DEPRECATED is not set +CONFIG_EP93XX_EARLY_UART1=y +# CONFIG_EP93XX_EARLY_UART2 is not set +# CONFIG_EP93XX_EARLY_UART3 is not set +CONFIG_EP93XX_ETH=y +# CONFIG_EP93XX_PWM is not set +CONFIG_EP93XX_SDCE0_PHYS_OFFSET=y +# CONFIG_EP93XX_SDCE1_PHYS_OFFSET is not set +# CONFIG_EP93XX_SDCE2_PHYS_OFFSET is not set +# CONFIG_EP93XX_SDCE3_ASYNC_PHYS_OFFSET is not set +# CONFIG_EP93XX_SDCE3_SYNC_PHYS_OFFSET is not set +CONFIG_EP93XX_SOC_COMMON=y +CONFIG_EP93XX_WATCHDOG=y +CONFIG_FRAME_POINTER=y +# CONFIG_FW_LOADER is not set +CONFIG_GENERIC_ATOMIC64=y +CONFIG_GENERIC_BUG=y +CONFIG_GENERIC_GPIO=y +CONFIG_GENERIC_IO=y +CONFIG_GENERIC_IRQ_SHOW=y +CONFIG_GENERIC_PCI_IOMAP=y +CONFIG_GENERIC_SMP_IDLE_THREAD=y +CONFIG_GENERIC_STRNCPY_FROM_USER=y +CONFIG_GENERIC_STRNLEN_USER=y +CONFIG_GPIOLIB=y +CONFIG_GPIO_EP93XX=y +CONFIG_GPIO_GENERIC=y +# CONFIG_HAMRADIO is not set +CONFIG_HARDIRQS_SW_RESEND=y +CONFIG_HAS_DMA=y +CONFIG_HAS_IOMEM=y +CONFIG_HAS_IOPORT=y +CONFIG_HAVE_AOUT=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_BPF_JIT=y +CONFIG_HAVE_CLK=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_FTRACE_MCOUNT_RECORD=y +CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y +CONFIG_HAVE_FUNCTION_TRACER=y +CONFIG_HAVE_GENERIC_DMA_COHERENT=y +CONFIG_HAVE_GENERIC_HARDIRQS=y +CONFIG_HAVE_IRQ_WORK=y +CONFIG_HAVE_KERNEL_GZIP=y +CONFIG_HAVE_KERNEL_LZMA=y +CONFIG_HAVE_KERNEL_LZO=y +CONFIG_HAVE_KERNEL_XZ=y +CONFIG_HAVE_LATENCYTOP_SUPPORT=y +CONFIG_HAVE_MEMBLOCK=y +CONFIG_HAVE_NET_DSA=y +CONFIG_HAVE_OPROFILE=y +CONFIG_HAVE_PERF_EVENTS=y +CONFIG_HAVE_PROC_CPU=y +CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y +CONFIG_HAVE_SYSCALL_TRACEPOINTS=y +CONFIG_HAVE_UID16=y +CONFIG_HW_CONSOLE=y +CONFIG_I2C=y +CONFIG_I2C_ALGOBIT=y +CONFIG_I2C_BOARDINFO=y +CONFIG_I2C_CHARDEV=y +CONFIG_IKCONFIG=y +CONFIG_IKCONFIG_PROC=y +CONFIG_INPUT=y +# CONFIG_INPUT_MISC is not set +CONFIG_INPUT_TOUCHSCREEN=y +CONFIG_IRQ_DOMAIN=y +CONFIG_KTIME_SCALAR=y +CONFIG_LEDS_GPIO_REGISTER=y +CONFIG_LOG_BUF_SHIFT=16 +# CONFIG_MACH_EDB9302A is not set +# CONFIG_MACH_EDB9307A is not set +# CONFIG_MACH_EDB9315A is not set +CONFIG_MACH_SIM_ONE=y +# CONFIG_MACH_SNAPPER_CL15 is not set +# CONFIG_MACH_VISION_EP9307 is not set +CONFIG_MMC=y +CONFIG_MMC_BLOCK=y +CONFIG_MMC_SPI=y +CONFIG_MODULES_USE_ELF_REL=y +CONFIG_MODULE_FORCE_UNLOAD=y +CONFIG_MTD_CFI_ADV_OPTIONS=y +# CONFIG_MTD_CFI_GEOMETRY is not set +CONFIG_MTD_CFI_STAA=y +# CONFIG_MTD_COMPLEX_MAPPINGS is not set +CONFIG_MTD_PHYSMAP=y +CONFIG_MTD_RAM=y +CONFIG_MULTI_IRQ_HANDLER=y +CONFIG_NEED_DMA_MAP_STATE=y +CONFIG_NEED_MACH_MEMORY_H=y +CONFIG_NEED_PER_CPU_KM=y +CONFIG_PAGEFLAGS_EXTENDED=y +CONFIG_PAGE_OFFSET=0xC0000000 +# CONFIG_PCI_SYSCALL is not set +CONFIG_PERCPU_RWSEM=y +CONFIG_PERF_USE_VMALLOC=y +# CONFIG_PREEMPT_RCU is not set +# CONFIG_SCSI_DMA is not set +# CONFIG_SERIAL_8250 is not set +CONFIG_SERIAL_AMBA_PL010=y +CONFIG_SERIAL_AMBA_PL010_CONSOLE=y +# CONFIG_SERIAL_AMBA_PL011 is not set +CONFIG_SPI=y +CONFIG_SPI_BITBANG=y +CONFIG_SPI_EP93XX=y +CONFIG_SPI_MASTER=y +CONFIG_SPLIT_PTLOCK_CPUS=999999 +CONFIG_SYS_SUPPORTS_APM_EMULATION=y +# CONFIG_TCP_CONG_ADVANCED is not set +CONFIG_TICK_CPU_ACCOUNTING=y +# CONFIG_TOUCHSCREEN_ATMEL_MXT is not set +# CONFIG_TOUCHSCREEN_AUO_PIXCIR is not set +# CONFIG_TOUCHSCREEN_BU21013 is not set +# CONFIG_TOUCHSCREEN_DYNAPRO is not set +# CONFIG_TOUCHSCREEN_EP93XX is not set +# CONFIG_TOUCHSCREEN_HAMPSHIRE is not set +# CONFIG_TOUCHSCREEN_MAX11801 is not set +# CONFIG_TOUCHSCREEN_PIXCIR is not set +# CONFIG_TOUCHSCREEN_ST1232 is not set +# CONFIG_TOUCHSCREEN_TSC2005 is not set +# CONFIG_TOUCHSCREEN_TSC_SERIO is not set +CONFIG_UID16=y +CONFIG_UIDGID_CONVERTED=y +# CONFIG_USB_ARCH_HAS_EHCI is not set +# CONFIG_USB_ARCH_HAS_XHCI is not set +CONFIG_USB_SUPPORT=y +CONFIG_VECTORS_BASE=0xffff0000 +CONFIG_VIDEO_OUTPUT_CONTROL=y +CONFIG_VM_EVENT_COUNTERS=y +CONFIG_VT=y +CONFIG_VT_CONSOLE=y +# CONFIG_VT_HW_CONSOLE_BINDING is not set +CONFIG_WATCHDOG_CORE=y +CONFIG_XZ_DEC_ARM=y +CONFIG_XZ_DEC_BCJ=y +CONFIG_ZBOOT_ROM_BSS=0x0 +CONFIG_ZBOOT_ROM_TEXT=0x0 +CONFIG_ZONE_DMA_FLAG=0 diff --git a/target/linux/ep93xx/patches-3.8/001-ep93xx_cpuinfo.patch b/target/linux/ep93xx/patches-3.8/001-ep93xx_cpuinfo.patch new file mode 100644 index 0000000000..2260641c24 --- /dev/null +++ b/target/linux/ep93xx/patches-3.8/001-ep93xx_cpuinfo.patch @@ -0,0 +1,70 @@ +This patch puts the EP93xx chip revision and unique ID into /proc/cpuinfo. +This is necessary to be able to set a unique MAC address for DHCP purposes +by adding a line to /etc/network/interfaces: + +# Generate a unique locally-assigned MAC address from the CPU serial number +pre-up ifconfig eth0 hw ether `sed -n 's/^Serial.* 000000/02/p' /proc/cpuinfo` + +It uses the chip revision reading code in the ep93xx-chip-revision patch. + +Really, this is wrong, since /proc/cpuinfo should report the revision and +serial number of the ARM920T processor, while these are the rev and serial +of the EP93xx SoC. In a future kernel (>2.6.34) there may be a new file +/proc/socinfo for this information. + + -martinwguy 14 May 2010 + +--- a/arch/arm/kernel/setup.c ++++ b/arch/arm/kernel/setup.c +@@ -55,6 +55,12 @@ + #include <asm/memblock.h> + #include <asm/virt.h> + ++#if defined(CONFIG_ARCH_EP93XX) ++#include <asm/io.h> ++#include <mach/platform.h> ++#include <mach/ep93xx-regs.h> ++#endif ++ + #include "atags.h" + #include "tcm.h" + +@@ -903,9 +909,16 @@ static int c_show(struct seq_file *m, vo + } + + seq_printf(m, "Hardware\t: %s\n", machine_name); ++#if defined(CONFIG_ARCH_EP93XX) ++ seq_printf(m, "Revision\t: %04x\n", ++ ep93xx_chip_revision()); ++ seq_printf(m, "Serial\t\t: %016x\n", ++ *((unsigned int *)EP93XX_SECURITY_UNIQID)); ++#else + seq_printf(m, "Revision\t: %04x\n", system_rev); + seq_printf(m, "Serial\t\t: %08x%08x\n", + system_serial_high, system_serial_low); ++#endif + + return 0; + } +--- a/arch/arm/mach-ep93xx/soc.h ++++ b/arch/arm/mach-ep93xx/soc.h +@@ -82,8 +82,6 @@ + #define EP93XX_I2S_PHYS_BASE EP93XX_APB_PHYS(0x00020000) + #define EP93XX_I2S_BASE EP93XX_APB_IOMEM(0x00020000) + +-#define EP93XX_SECURITY_BASE EP93XX_APB_IOMEM(0x00030000) +- + #define EP93XX_AAC_PHYS_BASE EP93XX_APB_PHYS(0x00080000) + #define EP93XX_AAC_BASE EP93XX_APB_IOMEM(0x00080000) + +--- a/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h ++++ b/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h +@@ -38,4 +38,8 @@ + #define EP93XX_UART3_PHYS_BASE EP93XX_APB_PHYS(0x000e0000) + #define EP93XX_UART3_BASE EP93XX_APB_IOMEM(0x000e0000) + ++#define EP93XX_SECURITY_BASE EP93XX_APB_IOMEM(0x00030000) ++#define EP93XX_SECURITY_REG(x) (EP93XX_SECURITY_BASE + (x)) ++#define EP93XX_SECURITY_UNIQID EP93XX_SECURITY_REG(0x2440) ++ + #endif diff --git a/target/linux/ep93xx/patches-3.8/003-ep93xx_touchscreen.patch b/target/linux/ep93xx/patches-3.8/003-ep93xx_touchscreen.patch new file mode 100644 index 0000000000..ed6f3c36ff --- /dev/null +++ b/target/linux/ep93xx/patches-3.8/003-ep93xx_touchscreen.patch @@ -0,0 +1,1072 @@ +--- + arch/arm/mach-ep93xx/include/mach/hardware.h | 1 + arch/arm/mach-ep93xx/include/mach/regs_touch.h | 95 ++ + drivers/input/touchscreen/Kconfig | 5 + drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/ep93xx_ts.c | 1117 +++++++++++++++++++++++++ + drivers/input/touchscreen/ep93xx_ts.h | 53 + + 6 files changed, 1272 insertions(+) + +--- a/drivers/input/touchscreen/Kconfig ++++ b/drivers/input/touchscreen/Kconfig +@@ -235,6 +235,15 @@ config TOUCHSCREEN_EGALAX + To compile this driver as a module, choose M here: the + module will be called egalax_ts. + ++config TOUCHSCREEN_EP93XX ++ tristate "EP93xx Touchscreen" ++ depends on ARM && INPUT && ARCH_EP93XX ++ help ++ Say Y here to enable support for EP93xx touch screen. ++ ++ To compile this driver as a module, choose M here: ++ the module will be called ep93xx_ts. ++ + config TOUCHSCREEN_FUJITSU + tristate "Fujitsu serial touchscreen" + select SERIO +--- a/drivers/input/touchscreen/Makefile ++++ b/drivers/input/touchscreen/Makefile +@@ -29,6 +29,7 @@ obj-$(CONFIG_TOUCHSCREEN_GUNZE) += gunz + obj-$(CONFIG_TOUCHSCREEN_EETI) += eeti_ts.o + obj-$(CONFIG_TOUCHSCREEN_ELO) += elo.o + obj-$(CONFIG_TOUCHSCREEN_EGALAX) += egalax_ts.o ++obj-$(CONFIG_TOUCHSCREEN_EP93XX) += ep93xx_ts.o + obj-$(CONFIG_TOUCHSCREEN_FUJITSU) += fujitsu_ts.o + obj-$(CONFIG_TOUCHSCREEN_ILI210X) += ili210x.o + obj-$(CONFIG_TOUCHSCREEN_INEXIO) += inexio.o +--- /dev/null ++++ b/drivers/input/touchscreen/ep93xx_ts.c +@@ -0,0 +1,1022 @@ ++/* ++ * linux/drivers/input/touchscreen/ep93xx_ts.c ++ * ++ * Copyright (C) 2003-2004 Cirrus Corp. ++ * ++ * 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. ++ */ ++ ++#include <linux/module.h> ++#include <linux/types.h> ++#include <linux/delay.h> ++#include <linux/wait.h> ++#include <linux/fs.h> ++#include <linux/sched.h> ++#include <linux/poll.h> ++#include <linux/miscdevice.h> ++#include <linux/init.h> ++#include <linux/compiler.h> ++#include <linux/timer.h> ++#include <linux/interrupt.h> ++#include <linux/syscalls.h> ++#include <linux/input.h> ++#include <linux/semaphore.h> ++#include <asm/irq.h> ++#include <mach/hardware.h> ++#include <asm/io.h> ++#include "../../../arch/arm/mach-ep93xx/soc.h" ++ ++/* This stuff should be in ep93xx-regs.h */ ++#define EP93XX_TOUCHSCREEN_REG(x) (EP93XX_TOUCHSCREEN_BASE + (x)) ++/* R/W touchscreen controller setup control register. */ ++#define EP93XX_TOUCHSCREEN_SETUP EP93XX_TOUCHSCREEN_REG(0x00) ++/* R/W touchscreen controller max/min register. */ ++#define EP93XX_TOUCHSCREEN_XYMAXMIN EP93XX_TOUCHSCREEN_REG(0x04) ++/* R touchscreen controller result register. */ ++#define EP93XX_TOUCHSCREEN_XYRESULT EP93XX_TOUCHSCREEN_REG(0x08) ++/* LOCKED R/W touchscreen Switch Matrix control register. */ ++#define EP93XX_TOUCHSCREEN_DISCHARGE EP93XX_TOUCHSCREEN_REG(0x0C) ++#define EP93XX_TOUCHSCREEN_XSAMPLE EP93XX_TOUCHSCREEN_REG(0x10) ++#define EP93XX_TOUCHSCREEN_YSAMPLE EP93XX_TOUCHSCREEN_REG(0x14) ++#define EP93XX_TOUCHSCREEN_DIRECT EP93XX_TOUCHSCREEN_REG(0x18) ++#define EP93XX_TOUCHSCREEN_DETECT EP93XX_TOUCHSCREEN_REG(0x1C) ++/* NA R/W touchscreen software lock register. */ ++#define EP93XX_TOUCHSCREEN_SWLOCK EP93XX_TOUCHSCREEN_REG(0x20) ++/* R/W touchscreen setup control register #2. */ ++#define EP93XX_TOUCHSCREEN_SETUP2 EP93XX_TOUCHSCREEN_REG(0x24) ++ ++/* These are duplicated in mach-ep93xx/core.c */ ++#define EP93XX_TIMER_REG(x) (EP93XX_TIMER_BASE + (x)) ++#define EP93XX_TIMER2_LOAD EP93XX_TIMER_REG(0x20) ++#define EP93XX_TIMER2_VALUE EP93XX_TIMER_REG(0x24) ++#define EP93XX_TIMER2_CONTROL EP93XX_TIMER_REG(0x28) ++#define EP93XX_TIMER2_CLEAR EP93XX_TIMER_REG(0x2c) ++ ++/* ++ * Register bit definitions ++ */ ++#define TSSETUP_SDLY_MASK 0x000003FF ++#define TSSETUP_SDLY_SHIFT 0 ++#define TSSETUP_NSMP_4 0x00000000 ++#define TSSETUP_NSMP_8 0x00000400 ++#define TSSETUP_NSMP_16 0x00000800 ++#define TSSETUP_NSMP_32 0x00000C00 ++#define TSSETUP_NSMP_MASK 0x00000C00 ++#define TSSETUP_DEV_4 0x00000000 ++#define TSSETUP_DEV_8 0x00001000 ++#define TSSETUP_DEV_12 0x00002000 ++#define TSSETUP_DEV_16 0x00003000 ++#define TSSETUP_DEV_24 0x00004000 ++#define TSSETUP_DEV_32 0x00005000 ++#define TSSETUP_DEV_64 0x00006000 ++#define TSSETUP_DEV_128 0x00007000 ++#define TSSETUP_ENABLE 0x00008000 ++#define TSSETUP_DLY_MASK 0x03FF0000 ++#define TSSETUP_DLY_SHIFT 16 ++#define TSSETUP_TDTCT 0x80000000 ++ ++#define TSMAXMIN_XMIN_MASK 0x000000FF ++#define TSMAXMIN_XMIN_SHIFT 0 ++#define TSMAXMIN_YMIN_MASK 0x0000FF00 ++#define TSMAXMIN_YMIN_SHIFT 8 ++#define TSMAXMIN_XMAX_MASK 0x00FF0000 ++#define TSMAXMIN_XMAX_SHIFT 16 ++#define TSMAXMIN_YMAX_MASK 0xFF000000 ++#define TSMAXMIN_YMAX_SHIFT 24 ++ ++#define TSXYRESULT_X_MASK 0x00000FFF ++#define TSXYRESULT_X_SHIFT 0 ++#define TSXYRESULT_AD_MASK 0x0000FFFF ++#define TSXYRESULT_AD_SHIFT 0 ++#define TSXYRESULT_Y_MASK 0x0FFF0000 ++#define TSXYRESULT_Y_SHIFT 16 ++#define TSXYRESULT_SDR 0x80000000 ++ ++#define TSX_SAMPLE_MASK 0x00003FFF ++#define TSX_SAMPLE_SHIFT 0x00 ++#define TSY_SAMPLE_MASK 0x3FFF0000 ++#define TSY_SAMPLE_SHIFT 0x10 ++ ++#define TSSETUP2_TINT 0x00000001 ++#define TSSETUP2_NICOR 0x00000002 ++#define TSSETUP2_PINT 0x00000004 ++#define TSSETUP2_PENSTS 0x00000008 ++#define TSSETUP2_PINTEN 0x00000010 ++#define TSSETUP2_DEVINT 0x00000020 ++#define TSSETUP2_DINTEN 0x00000040 ++#define TSSETUP2_DTMEN 0x00000080 ++#define TSSETUP2_DISDEV 0x00000100 ++#define TSSETUP2_NSIGND 0x00000200 ++#define TSSETUP2_S28EN 0x00000400 ++#define TSSETUP2_RINTEN 0x00000800 ++ ++#define TSXYRESULT_SDR 0x80000000 ++ ++/* ++ * These are used as trigger levels to know when we have pen up/down. ++ * The rules: ++ * 1. TS_HEAVY_INV_PRESSURE < TS_LIGHT_INV_PRESSURE because these ++ * are Inverse pressure. ++ * 2. Any touch lighter than TS_LIGHT_INV_PRESSURE is a pen up. ++ * 3. Any touch heavier than TS_HEAVY_INV_PRESSURE is a pen down. ++ */ ++#define TS_HEAVY_INV_PRESSURE 0xFE0 /* C00 */ ++#define TS_LIGHT_INV_PRESSURE 0xFFF /* e00 */ ++ ++/* ++ * If the x, y, or inverse pressure changes more than these values ++ * between two succeeding points, the point is not reported. ++ */ ++#define TS_MAX_VALID_XY_CHANGE 0x300 ++#define TS_MAX_VALID_PRESSURE_CHANGE 0x100 ++ ++/* ++ * This is the minimum Z1 Value that is valid. ++ */ ++#define MIN_Z1_VALUE 0x50 ++ ++/* ++ * Settling delay for taking each ADC measurement. Increase this ++ * if ts is jittery. ++ */ ++#define EP93XX_TS_ADC_DELAY_USEC 2000 ++ ++/* ++ * Delay between TS points. ++ */ ++#define EP93XX_TS_PER_POINT_DELAY_USEC 10000 ++ ++/* ++ * A few more macros... ++ */ ++#define TSSETUP_DEFAULT (TSSETUP_NSMP_32 | TSSETUP_DEV_64 | \ ++ ((128<<TSSETUP_SDLY_SHIFT) & TSSETUP_SDLY_MASK) | \ ++ ((128<<TSSETUP_DLY_SHIFT) & TSSETUP_DLY_MASK)) ++ ++#define TSSETUP2_DEFAULT (TSSETUP2_NSIGND) ++ ++/* ++ * For now, we use one of the minor numbers from the local/experimental ++ * range. ++ */ ++#define EP93XX_TS_MINOR 240 ++ ++/* ++ * Static Declarations ++ */ ++static unsigned int guiLastX, guiLastY; ++static unsigned int guiLastInvPressure; ++ ++struct TouchScreenSample ++{ ++ int currentX; ++ int currentY; ++ int currentButton; ++ int currentPressure; ++ struct timeval currentTime; ++}; ++ ++/* ++ * This must match the structure in tslib. ++ */ ++struct ts_sample { ++ int x; ++ int y; ++ unsigned int pressure; ++ struct timeval tv; ++}; ++ ++static struct TouchScreenSample gSample; ++static int bFreshTouchData; ++static int bCurrentPenDown; ++ ++static DECLARE_WAIT_QUEUE_HEAD(queue); ++static DEFINE_SEMAPHORE(open_sem); ++static DEFINE_SPINLOCK(event_buffer_lock); ++static struct fasync_struct *ep93xx_fasync; ++ ++/* ++ * Typedef Declarations ++ */ ++typedef enum { ++ TS_MODE_UN_INITIALIZED, ++ TS_MODE_HARDWARE_SCAN, ++ TS_MODE_SOFT_SCAN ++} ts_mode_t; ++ ++static ts_mode_t gScanningMode; ++ ++typedef enum{ ++ TS_STATE_STOPPED = 0, ++ TS_STATE_Z1, ++ TS_STATE_Z2, ++ TS_STATE_Y, ++ TS_STATE_X, ++ TS_STATE_DONE ++} ts_states_t; ++ ++typedef struct ++{ ++ unsigned int uiX; ++ unsigned int uiY; ++ unsigned int uiZ1; ++ unsigned int uiZ2; ++ ts_states_t state; ++} ts_struct_t; ++ ++static ts_struct_t sTouch; ++ ++/* ++ * From the spec, here's how to set up the touch screen's switch registers. ++ */ ++typedef struct ++{ ++ unsigned int uiDetect; ++ unsigned int uiDischarge; ++ unsigned int uiXSample; ++ unsigned int uiYSample; ++ unsigned int uiSwitchZ1; ++ unsigned int uiSwitchZ2; ++}SwitchStructType; ++ ++/* ++ * Here's the switch settings for a 4-wire touchscreen. See the spec ++ * for how to handle a 4, 7, or 8-wire. ++ */ ++const static SwitchStructType sSwitchSettings = ++/* s28en=0 */ ++/* TSDetect TSDischarge TSXSample TSYSample SwitchZ1 SwitchZ2 */ ++ {0x00403604, 0x0007fe04, 0x00081604, 0x00104601, 0x00101601, 0x00101608}; ++ ++/* ++ * Function declarations ++ */ ++static void ep93xx_ts_set_direct(unsigned int uiADCSwitch); ++static irqreturn_t ep93xx_ts_isr(int irq, void *dev_id); ++static irqreturn_t ep93xx_timer2_isr(int irq, void *dev_id); ++static void ee93xx_ts_evt_add(int button, int dX, int dY, int Pressure); ++static ssize_t ep93xx_ts_read(struct file *filp, char *buf, ++ size_t count, loff_t *l); ++static unsigned int ep93xx_ts_poll(struct file *filp, poll_table *wait); ++static int ep93xx_ts_open(struct inode *inode, struct file *filp); ++static int ep93xx_ts_fasync(int fd, struct file *filp, int on); ++static int ep93xx_ts_release(struct inode *inode, struct file *filp); ++static ssize_t ep93xx_ts_write(struct file *file, const char *buffer, ++ size_t count, loff_t *ppos); ++static void ep93xx_ts_setup(void); ++static void ep93xx_ts_shutdown(void); ++int __init ep93xx_ts_init(void); ++void __exit ep93xx_ts_exit(void); ++static unsigned int CalculateInvPressure(void); ++static unsigned int ADCGetData(unsigned int uiSamples, unsigned int uiMaxDiff); ++static void TS_Soft_Scan_Mode(void); ++static void TS_Hardware_Scan_Mode(void); ++static void ProcessPointData(void); ++static void Set_Timer2_uSec(unsigned int Delay_mSec); ++static void Stop_Timer2(void); ++ ++/* ++ * ep93xx_ts_isr ++ */ ++static irqreturn_t ep93xx_ts_isr(int irq, void *dev_id) ++{ ++ /* ++ * Note that we don't clear the interrupt here. The interrupt ++ * gets cleared in TS_Soft_Scan_Mode when the TS ENABLE ++ * bit is cleared. ++ */ ++ ++ /* ++ * Set the ts to manual polling mode and schedule a callback. ++ * That way we can return from the isr in a reasonable amount of ++ * time and process the touch in the callback after a brief delay. ++ */ ++ TS_Soft_Scan_Mode(); ++ ++ return(IRQ_HANDLED); ++} ++ ++/* ++ * Save the current ts 'event' in an atomic fashion. ++ */ ++static void ee93xx_ts_evt_add(int buttons, int iX, int iY, int iPressure) ++{ ++ /* ++ * Note the event, but use spinlocks to keep it from getting ++ * halfway read if we get interrupted. ++ */ ++ ++ spin_lock(&event_buffer_lock); ++ ++ gSample.currentX = iX; ++ gSample.currentY = iY; ++ gSample.currentButton = buttons; ++ gSample.currentPressure = iPressure; ++ bFreshTouchData = 1; ++ do_gettimeofday(&gSample.currentTime); ++ ++ spin_unlock(&event_buffer_lock); ++ ++ kill_fasync(&ep93xx_fasync, SIGIO, POLL_IN); ++ wake_up_interruptible(&queue); ++} ++ ++ ++static ssize_t ep93xx_ts_read(struct file *filp, char *buf, size_t count, loff_t *l) ++{ ++ unsigned short data[3]; ++ struct ts_sample ts_data; ++ int iReturn = -EFAULT; ++ ++ if (!bFreshTouchData) ++ { ++ iReturn = 0; ++ } ++ else if (count == sizeof(data)) ++ { ++ spin_lock_irq(&event_buffer_lock); ++ bFreshTouchData = 0; ++ data[0] = gSample.currentX; ++ data[1] = gSample.currentY; ++ data[2] = gSample.currentButton; ++ ++ spin_unlock_irq(&event_buffer_lock); ++ ++ if (copy_to_user(buf, data, sizeof data)) ++ return -EFAULT; ++ ++ count -= sizeof(data); ++ ++ /* return the # of bytes that got read */ ++ iReturn = sizeof(data) ; ++ } ++ else if (count == sizeof(struct ts_sample) ) ++ { ++ spin_lock_irq(&event_buffer_lock); ++ bFreshTouchData = 0; ++ ts_data.x = gSample.currentX; ++ ts_data.y = gSample.currentY; ++ ts_data.pressure = gSample.currentPressure; ++ ts_data.tv = gSample.currentTime; ++ spin_unlock_irq(&event_buffer_lock); ++ ++ if (copy_to_user(buf, &ts_data, sizeof(struct ts_sample))) ++ { ++ iReturn = -EFAULT; ++ } ++ else ++ { ++ count -= sizeof(ts_data); ++ iReturn = sizeof(ts_data); ++ } ++ } ++ ++ return iReturn; ++} ++ ++static unsigned int ep93xx_ts_poll(struct file *filp, poll_table *wait) ++{ ++ poll_wait(filp, &queue, wait); ++ ++ if (bFreshTouchData) ++ { ++ return POLLIN | POLLRDNORM; ++ } ++ ++ return 0; ++} ++ ++static int ep93xx_ts_open(struct inode *inode, struct file *filp) ++{ ++ if (down_trylock(&open_sem)) ++ { ++ return -EBUSY; ++ } ++ ++ ep93xx_ts_setup(); ++ ++ return 0; ++} ++ ++/* ++ * Asynchronous I/O support. ++ */ ++static int ep93xx_ts_fasync(int fd, struct file *filp, int on) ++{ ++ int retval; ++ ++ retval = fasync_helper(fd, filp, on, &ep93xx_fasync); ++ if (retval < 0) ++ { ++ return retval; ++ } ++ ++ return 0; ++} ++ ++static int ep93xx_ts_release(struct inode *inode, struct file *filp) ++{ ++ Stop_Timer2(); ++ ++ /* ++ * Call our async I/O support to request that this file ++ * cease to be used for async I/O. ++ */ ++ ep93xx_ts_fasync(-1, filp, 0); ++ ++ ep93xx_ts_shutdown(); ++ ++ up(&open_sem); ++ ++ return 0; ++} ++ ++static ssize_t ep93xx_ts_write(struct file *file, const char *buffer, size_t count, ++ loff_t *ppos) ++{ ++ return -EINVAL; ++} ++ ++ ++static int ep93xx_ts_ioctl(struct inode *inode, struct file *file, uint command, ulong u) ++{ ++ static const int version = EV_VERSION; ++ static const u_int32_t bit =(1 << EV_ABS); ++ static const u_int32_t absbit = (1 << ABS_X) | (1 << ABS_Y) | (1 << ABS_PRESSURE); ++ int iReturn ; ++ int i = 0; ++ ++ switch(command) ++ { ++ case EVIOCGVERSION: ++ i = copy_to_user((void __user *)u, (void *)version, sizeof(version)); ++ iReturn = i ? -EFAULT : 0; ++ break; ++ ++ case EVIOCGBIT(0,sizeof(u_int32_t) * 8) : ++ i = copy_to_user((void __user *)u, (void *)bit, sizeof(bit)); ++ iReturn = i ? -EFAULT : 0; ++ break; ++ ++ case EVIOCGBIT(EV_ABS, sizeof(absbit) * 8): ++ i = copy_to_user((void __user *)u, (void *)absbit, sizeof(absbit)); ++ iReturn = i ? -EFAULT : 0; ++ break; ++ default: ++ iReturn = -1; ++ break; ++ } ++ ++ return iReturn; ++} ++ ++static struct file_operations ep93xx_ts_fops = { ++ owner: THIS_MODULE, ++ read: ep93xx_ts_read, ++ write: ep93xx_ts_write, ++ poll: ep93xx_ts_poll, ++ open: ep93xx_ts_open, ++ unlocked_ioctl: ep93xx_ts_ioctl, ++ release: ep93xx_ts_release, ++ fasync: ep93xx_ts_fasync, ++}; ++ ++static struct miscdevice ep93xx_ts_miscdev = ++{ ++ EP93XX_TS_MINOR, ++ "ep93xx_ts", ++ &ep93xx_ts_fops ++}; ++ ++void ep93xx_ts_setup(void) ++{ ++ unsigned int uiKTDIV, uiTSXYMaxMin; ++ ++ /* ++ * Set the TSEN bit in KTDIV so that we are enabling the clock ++ * for the touchscreen. ++ */ ++ uiKTDIV = __raw_readl(EP93XX_SYSCON_KEYTCHCLKDIV); ++ uiKTDIV |= EP93XX_SYSCON_KEYTCHCLKDIV_TSEN; ++ ep93xx_syscon_swlocked_write(uiKTDIV, EP93XX_SYSCON_KEYTCHCLKDIV); ++ ++ /* ++ * Program the EP93XX_TOUCHSCREEN_SETUP and TSSetup2 registers. ++ */ ++ __raw_writel(TSSETUP_DEFAULT, EP93XX_TOUCHSCREEN_SETUP); ++ __raw_writel(TSSETUP2_DEFAULT, EP93XX_TOUCHSCREEN_SETUP2); ++ ++ /* ++ * Set the the touch settings. ++ */ ++ __raw_writel(0xaa, EP93XX_TOUCHSCREEN_SWLOCK); ++ __raw_writel(sSwitchSettings.uiDischarge, EP93XX_TOUCHSCREEN_DIRECT); ++ ++ __raw_writel(0xaa, EP93XX_TOUCHSCREEN_SWLOCK); ++ __raw_writel(sSwitchSettings.uiDischarge, EP93XX_TOUCHSCREEN_DISCHARGE); ++ ++ __raw_writel(0xaa, EP93XX_TOUCHSCREEN_SWLOCK); ++ __raw_writel(sSwitchSettings.uiSwitchZ1, EP93XX_TOUCHSCREEN_XSAMPLE); ++ ++ __raw_writel(0xaa, EP93XX_TOUCHSCREEN_SWLOCK); ++ __raw_writel(sSwitchSettings.uiSwitchZ2, EP93XX_TOUCHSCREEN_YSAMPLE); ++ ++ __raw_writel(0xaa, EP93XX_TOUCHSCREEN_SWLOCK); ++ __raw_writel(sSwitchSettings.uiDetect, EP93XX_TOUCHSCREEN_DETECT); ++ ++ /* ++ * X,YMin set to 0x40 = have to drag that many pixels for a new irq. ++ * X,YMax set to 0x40 = 1024 pixels is the maximum movement within the ++ * time scan limit. ++ */ ++ uiTSXYMaxMin = (50 << TSMAXMIN_XMIN_SHIFT) & TSMAXMIN_XMIN_MASK; ++ uiTSXYMaxMin |= (50 << TSMAXMIN_YMIN_SHIFT) & TSMAXMIN_YMIN_MASK; ++ uiTSXYMaxMin |= (0xff << TSMAXMIN_XMAX_SHIFT) & TSMAXMIN_XMAX_MASK; ++ uiTSXYMaxMin |= (0xff << TSMAXMIN_YMAX_SHIFT) & TSMAXMIN_YMAX_MASK; ++ __raw_writel(uiTSXYMaxMin, EP93XX_TOUCHSCREEN_XYMAXMIN); ++ ++ bCurrentPenDown = 0; ++ bFreshTouchData = 0; ++ guiLastX = 0; ++ guiLastY = 0; ++ guiLastInvPressure = 0xffffff; ++ ++ /* ++ * Enable the touch screen scanning engine. ++ */ ++ TS_Hardware_Scan_Mode(); ++} ++ ++/* ++ * ep93xx_ts_shutdown ++ * ++ */ ++static void ++ep93xx_ts_shutdown(void) ++{ ++ unsigned int uiKTDIV; ++ ++ sTouch.state = TS_STATE_STOPPED; ++ Stop_Timer2(); ++ ++ /* ++ * Disable the scanning engine. ++ */ ++ __raw_writel(0, EP93XX_TOUCHSCREEN_SETUP); ++ __raw_writel(0, EP93XX_TOUCHSCREEN_SETUP2); ++ ++ /* ++ * Clear the TSEN bit in KTDIV so that we are disabling the clock ++ * for the touchscreen. ++ */ ++ uiKTDIV = __raw_readl(EP93XX_SYSCON_KEYTCHCLKDIV); ++ uiKTDIV &= ~EP93XX_SYSCON_KEYTCHCLKDIV_TSEN; ++ ep93xx_syscon_swlocked_write(uiKTDIV, EP93XX_SYSCON_KEYTCHCLKDIV); ++ ++} /* ep93xx_ts_shutdown */ ++ ++static irqreturn_t ep93xx_timer2_isr(int irq, void *dev_id) ++{ ++ switch(sTouch.state) ++ { ++ case TS_STATE_STOPPED: ++ TS_Hardware_Scan_Mode(); ++ break; ++ ++ /* ++ * Get the Z1 value for pressure measurement and set up ++ * the switch register for getting the Z2 measurement. ++ */ ++ case TS_STATE_Z1: ++ Set_Timer2_uSec(EP93XX_TS_ADC_DELAY_USEC); ++ sTouch.uiZ1 = ADCGetData(2, 200); ++ ep93xx_ts_set_direct(sSwitchSettings.uiSwitchZ2); ++ sTouch.state = TS_STATE_Z2; ++ break; ++ ++ /* ++ * Get the Z2 value for pressure measurement and set up ++ * the switch register for getting the Y measurement. ++ */ ++ case TS_STATE_Z2: ++ sTouch.uiZ2 = ADCGetData(2, 200); ++ ep93xx_ts_set_direct(sSwitchSettings.uiYSample); ++ sTouch.state = TS_STATE_Y; ++ break; ++ ++ /* ++ * Get the Y value and set up the switch register for ++ * getting the X measurement. ++ */ ++ case TS_STATE_Y: ++ sTouch.uiY = ADCGetData(4, 20); ++ ep93xx_ts_set_direct(sSwitchSettings.uiXSample); ++ sTouch.state = TS_STATE_X; ++ break; ++ ++ /* ++ * Read the X value. This is the last of the 4 adc values ++ * we need so we continue on to process the data. ++ */ ++ case TS_STATE_X: ++ Stop_Timer2(); ++ ++ sTouch.uiX = ADCGetData(4, 20); ++ ++ __raw_writel(0xaa, EP93XX_TOUCHSCREEN_SWLOCK); ++ __raw_writel(sSwitchSettings.uiDischarge, EP93XX_TOUCHSCREEN_DIRECT); ++ ++ sTouch.state = TS_STATE_DONE; ++ ++ /* ++ * Process this set of ADC readings. ++ */ ++ ProcessPointData(); ++ ++ break; ++ ++ /* ++ * Shouldn't get here. But if we do, we can recover... ++ */ ++ case TS_STATE_DONE: ++ TS_Hardware_Scan_Mode(); ++ break; ++ } ++ ++ /* ++ * Clear the timer2 interrupt. ++ */ ++ __raw_writel(1, EP93XX_TIMER2_CLEAR); ++ return(IRQ_HANDLED); ++} ++ ++/*--------------------------------------------------------------------- ++ * ProcessPointData ++ * ++ * This routine processes the ADC data into usable point data and then ++ * puts the driver into hw or sw scanning mode before returning. ++ * ++ * We calculate inverse pressure (lower number = more pressure) then ++ * do a hystheresis with the two pressure values 'light' and 'heavy'. ++ * ++ * If we are above the light, we have pen up. ++ * If we are below the heavy we have pen down. ++ * As long as the pressure stays below the light, pen stays down. ++ * When we get above the light again, pen goes back up. ++ * ++ */ ++static void ProcessPointData(void) ++{ ++ int bValidPoint = 0; ++ unsigned int uiXDiff, uiYDiff, uiInvPressureDiff; ++ unsigned int uiInvPressure; ++ ++ /* ++ * Calculate the current pressure. ++ */ ++ uiInvPressure = CalculateInvPressure(); ++ ++ /* ++ * If pen pressure is so light that it is greater than the 'max' setting ++ * then we consider this to be a pen up. ++ */ ++ if (uiInvPressure >= TS_LIGHT_INV_PRESSURE) ++ { ++ bCurrentPenDown = 0; ++ ee93xx_ts_evt_add(0, guiLastX, guiLastY, 0); ++ TS_Hardware_Scan_Mode(); ++ return; ++ } ++ ++ /* ++ * Hysteresis: ++ * If the pen pressure is hard enough to be less than the 'min' OR ++ * the pen is already down and is still less than the 'max'... ++ */ ++ if ((uiInvPressure < TS_HEAVY_INV_PRESSURE) || ++ (bCurrentPenDown && (uiInvPressure < TS_LIGHT_INV_PRESSURE))) ++ { ++ if (bCurrentPenDown) ++ { ++ /* ++ * If pen was previously down, check the difference between ++ * the last sample and this one... if the difference between ++ * samples is too great, ignore the sample. ++ */ ++ uiXDiff = abs(guiLastX - sTouch.uiX); ++ uiYDiff = abs(guiLastY - sTouch.uiY); ++ uiInvPressureDiff = abs(guiLastInvPressure - uiInvPressure); ++ ++ if (uiXDiff < TS_MAX_VALID_XY_CHANGE ++ && uiYDiff < TS_MAX_VALID_XY_CHANGE ++ && uiInvPressureDiff < TS_MAX_VALID_PRESSURE_CHANGE) ++ { ++ bValidPoint = 1; ++ } ++ } ++ else ++ { ++ bValidPoint = 1; ++ } ++ ++ /* ++ * If either the pen was put down or dragged make a note of it. ++ */ ++ if (bValidPoint) ++ { ++ guiLastX = sTouch.uiX; ++ guiLastY = sTouch.uiY; ++ guiLastInvPressure = uiInvPressure; ++ bCurrentPenDown = 1; ++ ee93xx_ts_evt_add(1, sTouch.uiX, sTouch.uiY, ++ 0x7000000 / uiInvPressure); ++ } ++ ++ TS_Soft_Scan_Mode(); ++ return; ++ } ++ ++ TS_Hardware_Scan_Mode(); ++} ++ ++static void ep93xx_ts_set_direct(unsigned int uiADCSwitch) ++{ ++ unsigned int uiResult; ++ ++ /* ++ * Set the switch settings in the direct register. ++ */ ++ __raw_writel(0xaa, EP93XX_TOUCHSCREEN_SWLOCK); ++ __raw_writel(uiADCSwitch, EP93XX_TOUCHSCREEN_DIRECT); ++ ++ /* ++ * Read and throw away the first sample. ++ */ ++ do { ++ uiResult = __raw_readl(EP93XX_TOUCHSCREEN_XYRESULT); ++ } while (!(uiResult & TSXYRESULT_SDR)); ++ ++} ++ ++static unsigned int ADCGetData(unsigned int uiSamples, unsigned int uiMaxDiff) ++{ ++ unsigned int uiResult, uiValue, uiCount, uiLowest, uiHighest, uiSum, uiAve; ++ ++ do ++ { ++ /* ++ * Initialize our values. ++ */ ++ uiLowest = 0xfffffff; ++ uiHighest = 0; ++ uiSum = 0; ++ ++ for (uiCount = 0; uiCount < uiSamples; uiCount++) ++ { ++ /* ++ * Read the touch screen four more times and average. ++ */ ++ do { ++ uiResult = __raw_readl(EP93XX_TOUCHSCREEN_XYRESULT); ++ } while (!(uiResult & TSXYRESULT_SDR)); ++ ++ uiValue = (uiResult & TSXYRESULT_AD_MASK) >> TSXYRESULT_AD_SHIFT; ++ uiValue = ((uiValue >> 4) + ((1 + TSXYRESULT_X_MASK)>>1)) & TSXYRESULT_X_MASK; ++ ++ /* ++ * Add up the values. ++ */ ++ uiSum += uiValue; ++ ++ /* ++ * Get the lowest and highest values. ++ */ ++ if (uiValue < uiLowest) ++ { ++ uiLowest = uiValue; ++ } ++ if (uiValue > uiHighest) ++ { ++ uiHighest = uiValue; ++ } ++ } ++ } while ((uiHighest - uiLowest) > uiMaxDiff); ++ ++ /* ++ * Calculate the Average value. ++ */ ++ uiAve = uiSum / uiSamples; ++ ++ return uiAve; ++} ++ ++/* ++ * CalculateInvPressure ++ * ++ * Is the Touch Valid. Touch is not valid if the X or Y value is not ++ * in range and the pressure is not enough. ++ * ++ * Touch resistance can be measured by the following formula: ++ * ++ * Rx * X * Z2 ++ * Rtouch = --------- * (-- - 1) ++ * 4096 Z1 ++ * ++ * This is simplified in the ration of Rtouch to Rx. The lower the value, the ++ * higher the pressure. ++ * ++ * Z2 ++ * InvPressure = X * (-- - 1) ++ * Z1 ++ */ ++static unsigned int CalculateInvPressure(void) ++{ ++ unsigned int uiInvPressure; ++ ++ /* ++ * Check to see if the point is valid. ++ */ ++ if (sTouch.uiZ1 < MIN_Z1_VALUE) ++ { ++ uiInvPressure = 0x10000; ++ } ++ ++ /* ++ * Can omit the pressure calculation if you need to get rid of the division. ++ */ ++ else ++ { ++ uiInvPressure = ((sTouch.uiX * sTouch.uiZ2) / sTouch.uiZ1) - sTouch.uiX; ++ } ++ ++ return uiInvPressure; ++} ++ ++/* ++ * TS_Hardware_Scan_Mode ++ * ++ * Enables the ep93xx ts scanning engine so that when the pen goes down ++ * we will get an interrupt. ++ */ ++static void TS_Hardware_Scan_Mode(void) ++{ ++ unsigned int uiDevCfg; ++ ++ /* ++ * Disable the soft scanning engine. ++ */ ++ sTouch.state = TS_STATE_STOPPED; ++ Stop_Timer2(); ++ ++ /* ++ * Clear the TIN (Touchscreen INactive) bit so we can go to ++ * automatic scanning mode. ++ */ ++ uiDevCfg = __raw_readl(EP93XX_SYSCON_DEVCFG); ++ ep93xx_syscon_swlocked_write(uiDevCfg & ~EP93XX_SYSCON_DEVCFG_TIN, ++ EP93XX_SYSCON_DEVCFG); ++ ++ /* ++ * Enable the touch screen scanning state machine by setting ++ * the ENABLE bit. ++ */ ++ __raw_writel(TSSETUP_DEFAULT | TSSETUP_ENABLE, EP93XX_TOUCHSCREEN_SETUP); ++ ++ /* ++ * Set the flag to show that we are in interrupt mode. ++ */ ++ gScanningMode = TS_MODE_HARDWARE_SCAN; ++ ++ /* ++ * Initialize EP93XX_TOUCHSCREEN_SETUP2 register. ++ */ ++ __raw_writel(TSSETUP2_DEFAULT, EP93XX_TOUCHSCREEN_SETUP2); ++ ++} ++ ++/* ++ * TS_Soft_Scan_Mode ++ * ++ * Sets the touch screen to manual polling mode. ++ */ ++static void TS_Soft_Scan_Mode(void) ++{ ++ unsigned int uiDevCfg; ++ ++ if (gScanningMode != TS_MODE_SOFT_SCAN) ++ { ++ /* ++ * Disable the touch screen scanning state machine by clearing ++ * the ENABLE bit. ++ */ ++ __raw_writel(TSSETUP_DEFAULT, EP93XX_TOUCHSCREEN_SETUP); ++ ++ /* ++ * Set the TIN bit so we can do manual touchscreen polling. ++ */ ++ uiDevCfg = __raw_readl(EP93XX_SYSCON_DEVCFG); ++ ep93xx_syscon_swlocked_write(uiDevCfg | EP93XX_SYSCON_DEVCFG_TIN, ++ EP93XX_SYSCON_DEVCFG); ++ } ++ ++ /* ++ * Set the switch register up for the first ADC reading ++ */ ++ ep93xx_ts_set_direct(sSwitchSettings.uiSwitchZ1); ++ ++ /* ++ * Initialize our software state machine to know which ADC ++ * reading to take ++ */ ++ sTouch.state = TS_STATE_Z1; ++ ++ /* ++ * Set the timer so after a mSec or two settling delay it will ++ * take the first ADC reading. ++ */ ++ Set_Timer2_uSec(EP93XX_TS_PER_POINT_DELAY_USEC); ++ ++ /* ++ * Note that we are in sw scanning mode not hw scanning mode. ++ */ ++ gScanningMode = TS_MODE_SOFT_SCAN; ++ ++} ++ ++static void Set_Timer2_uSec(unsigned int uiDelay_uSec) ++{ ++ unsigned int uiClockTicks; ++ ++ /* ++ * Stop timer 2 ++ */ ++ __raw_writel(0, EP93XX_TIMER2_CONTROL); ++ ++ uiClockTicks = ((uiDelay_uSec * 508) + 999) / 1000; ++ __raw_writel(uiClockTicks, EP93XX_TIMER2_LOAD); ++ __raw_writel(uiClockTicks, EP93XX_TIMER2_VALUE); ++ ++ /* ++ * Set up Timer 2 for 508 kHz clock and periodic mode. ++ */ ++ __raw_writel(0xC8, EP93XX_TIMER2_CONTROL); ++ ++} ++ ++static void Stop_Timer2(void) ++{ ++ __raw_writel(0, EP93XX_TIMER2_CONTROL); ++} ++ ++/* ++ * Initialization and exit routines ++ */ ++int __init ep93xx_ts_init(void) ++{ ++ int retval; ++ ++ retval = request_irq(IRQ_EP93XX_TOUCH, ep93xx_ts_isr, ++ IRQF_DISABLED, "ep93xx_ts", 0); ++ if (retval) ++ { ++ printk(KERN_WARNING "ep93xx_ts: failed to get touchscreen IRQ\n"); ++ return retval; ++ } ++ ++ retval = request_irq(IRQ_EP93XX_TIMER2, ep93xx_timer2_isr, ++ IRQF_DISABLED, "ep93xx_timer2", 0); ++ if (retval) ++ { ++ printk(KERN_WARNING "ep93xx_ts: failed to get timer2 IRQ\n"); ++ free_irq(IRQ_EP93XX_TOUCH, 0); ++ return retval; ++ } ++ ++ misc_register(&ep93xx_ts_miscdev); ++ ++ sTouch.state = TS_STATE_STOPPED; ++ gScanningMode = TS_MODE_UN_INITIALIZED; ++ ++ printk(KERN_NOTICE "ep93xx touchscreen driver configured for 4-wire operation\n"); ++ ++ return 0; ++} ++ ++void __exit ep93xx_ts_exit(void) ++{ ++ Stop_Timer2(); ++ ++ free_irq(IRQ_EP93XX_TOUCH, 0); ++ free_irq(IRQ_EP93XX_TIMER2, 0); ++ ++ misc_deregister(&ep93xx_ts_miscdev); ++} ++ ++module_init(ep93xx_ts_init); ++module_exit(ep93xx_ts_exit); ++ ++MODULE_DESCRIPTION("Cirrus EP93xx touchscreen driver"); ++MODULE_SUPPORTED_DEVICE("touchscreen/ep93xx"); ++MODULE_LICENSE("GPL"); +--- a/arch/arm/mach-ep93xx/core.c ++++ b/arch/arm/mach-ep93xx/core.c +@@ -205,6 +205,7 @@ void ep93xx_syscon_swlocked_write(unsign + + spin_unlock_irqrestore(&syscon_swlock, flags); + } ++EXPORT_SYMBOL(ep93xx_syscon_swlocked_write); + + void ep93xx_devcfg_set_clear(unsigned int set_bits, unsigned int clear_bits) + { diff --git a/target/linux/ep93xx/patches-3.8/004-simone_add_mmc_spi.patch b/target/linux/ep93xx/patches-3.8/004-simone_add_mmc_spi.patch new file mode 100644 index 0000000000..26974ba680 --- /dev/null +++ b/target/linux/ep93xx/patches-3.8/004-simone_add_mmc_spi.patch @@ -0,0 +1,178 @@ +This enables the mmc-over-spi driver for the Sim.One board, based on Mika's +patch, which used a GPIO for chip select in stead of the default SFRMOUT pin. +I've modified it to use the usual SFRMOUT; if you've modified your Sim.One +board to use a GPIO instead, uncomment and modify +// #define MMC_CHIP_SELECT_GPIO EP93XX_GPIO_LINE_EGPIO15 +in the source file. + -martinwguy, 14 May 2010 + +From: Mika Westerberg <mika.westerberg@iki.fi> +Date: Wed, 28 Apr 2010 08:42:46 +0300 +Subject: [PATCH] ep93xx: simone: added board specific SPI support for MMC/SD cards + +This includes setting up EGPIOs 0 and 9 for card detection and chip select +respectively. + +--- a/arch/arm/mach-ep93xx/simone.c ++++ b/arch/arm/mach-ep93xx/simone.c +@@ -20,10 +20,15 @@ + #include <linux/platform_device.h> + #include <linux/i2c.h> + #include <linux/i2c-gpio.h> ++#include <linux/gpio.h> ++#include <linux/mmc/host.h> ++#include <linux/spi/spi.h> ++#include <linux/spi/mmc_spi.h> + + #include <mach/hardware.h> + #include <linux/platform_data/video-ep93xx.h> + #include <mach/gpio-ep93xx.h> ++#include <linux/platform_data/spi-ep93xx.h> + + #include <asm/hardware/vic.h> + #include <asm/mach-types.h> +@@ -41,6 +46,135 @@ static struct ep93xxfb_mach_info __initd + .flags = EP93XXFB_USE_SDCSN0 | EP93XXFB_PCLK_FALLING, + }; + ++/* ++ * GPIO lines used for MMC card detection. ++ */ ++#define MMC_CARD_DETECT_GPIO EP93XX_GPIO_LINE_EGPIO0 ++ ++/* ++ * If you have hacked your Sim.One to use a GPIO as SD card chip select ++ * (SD pin 1), uncomment the following line. ++ * The example, EGPIO15, is on TP17 near the CPU. ++ */ ++// #define MMC_CHIP_SELECT_GPIO EP93XX_GPIO_LINE_EGPIO15 ++ ++/* ++ * MMC SPI chip select GPIO handling. If you are using SFRMOUT (SFRM1) signal, ++ * you can leave these empty and pass NULL as .controller_data. ++ */ ++ ++#ifdef MMC_CHIP_SELECT_GPIO ++static int simone_mmc_spi_setup(struct spi_device *spi) ++{ ++ unsigned int gpio = MMC_CHIP_SELECT_GPIO; ++ int err; ++ ++ err = gpio_request(gpio, spi->modalias); ++ if (err) ++ return err; ++ ++ err = gpio_direction_output(gpio, 1); ++ if (err) { ++ gpio_free(gpio); ++ return err; ++ } ++ ++ return 0; ++} ++ ++static void simone_mmc_spi_cleanup(struct spi_device *spi) ++{ ++ unsigned int gpio = MMC_CHIP_SELECT_GPIO; ++ ++ gpio_set_value(gpio, 1); ++ gpio_direction_input(gpio); ++ gpio_free(gpio); ++} ++ ++static void simone_mmc_spi_cs_control(struct spi_device *spi, int value) ++{ ++ gpio_set_value(MMC_CHIP_SELECT_GPIO, value); ++} ++ ++static struct ep93xx_spi_chip_ops simone_mmc_spi_ops = { ++ .setup = simone_mmc_spi_setup, ++ .cleanup = simone_mmc_spi_cleanup, ++ .cs_control = simone_mmc_spi_cs_control, ++}; ++#endif ++ ++/* ++ * MMC card detection GPIO setup. ++ */ ++static int simone_mmc_spi_init(struct device *dev, ++ irqreturn_t (*irq_handler)(int, void *), void *mmc) ++{ ++ unsigned int gpio = MMC_CARD_DETECT_GPIO; ++ int irq, err; ++ ++ err = gpio_request(gpio, dev_name(dev)); ++ if (err) ++ return err; ++ ++ err = gpio_direction_input(gpio); ++ if (err) ++ goto fail; ++ ++ irq = gpio_to_irq(gpio); ++ if (irq < 0) ++ goto fail; ++ ++ err = request_irq(irq, irq_handler, IRQF_TRIGGER_FALLING, ++ "MMC card detect", mmc); ++ if (err) ++ goto fail; ++ ++ printk(KERN_INFO "%s: using irq %d for MMC card detection\n", ++ dev_name(dev), irq); ++ ++ return 0; ++fail: ++ gpio_free(gpio); ++ return err; ++} ++ ++static void simone_mmc_spi_exit(struct device *dev, void *mmc) ++{ ++ unsigned int gpio = MMC_CARD_DETECT_GPIO; ++ ++ free_irq(gpio_to_irq(gpio), mmc); ++ gpio_free(gpio); ++} ++ ++static struct mmc_spi_platform_data simone_mmc_spi_data = { ++ .init = simone_mmc_spi_init, ++ .exit = simone_mmc_spi_exit, ++ .detect_delay = 500, ++ .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, ++}; ++ ++static struct spi_board_info simone_spi_devices[] __initdata = { ++ { ++ .modalias = "mmc_spi", ++#ifdef MMC_CHIP_SELECT_GPIO ++ .controller_data = &simone_mmc_spi_ops, ++#endif ++ .platform_data = &simone_mmc_spi_data, ++ /* ++ * We use 10 MHz even though the maximum is 3.7 MHz. The driver ++ * will limit it automatically to max. frequency. ++ */ ++ .max_speed_hz = 10 * 1000 * 1000, ++ .bus_num = 0, ++ .chip_select = 0, ++ .mode = SPI_MODE_3, ++ }, ++}; ++ ++static struct ep93xx_spi_info simone_spi_info __initdata = { ++ .num_chipselect = ARRAY_SIZE(simone_spi_devices), ++}; ++ + static struct i2c_gpio_platform_data __initdata simone_i2c_gpio_data = { + .sda_pin = EP93XX_GPIO_LINE_EEDAT, + .sda_is_open_drain = 0, +@@ -75,6 +209,8 @@ static void __init simone_init_machine(v + ep93xx_register_fb(&simone_fb_info); + ep93xx_register_i2c(&simone_i2c_gpio_data, simone_i2c_board_info, + ARRAY_SIZE(simone_i2c_board_info)); ++ ep93xx_register_spi(&simone_spi_info, simone_spi_devices, ++ ARRAY_SIZE(simone_spi_devices)); + simone_register_audio(); + } + |