93b61bddc1
1. Rewrite of the non-dma data transfer functions to use only ONE mode of TIMOD (TIMOD=0x1). With TIMOD=0, it was not possible to set the TX bit pattern. So the TDBR = 0xFFFF inside the read calls won't work. 2. Clear SPI_RDBR before reading and before duplex transfer. Otherwise the garbage data in RDBR will get read. Since mmc_spi uses a lot of duplex transfers, this is the main cause of mmc_spi failure. 3. Poll RXS for transfer completion. Polling SPIF or TXS cannot guarantee transfer completion. This may interrupt a transfer before it is finished. Also this may leave garbage data in buffer and affect next transfer. [Yi Li <yi.li@analog.com>: add a field "u16 idle_tx_val" in "struct bfin5xx_spi_chip" to specify the value to transmit if no TX value is supplied.] Signed-off-by: Wolfgang Muees <wolfgang.mues@auerswald.de> Signed-off-by: Yi Li <yi.li@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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| .. | ||
| .gitignore | ||
| Kbuild | ||
| atomic.h | ||
| auxvec.h | ||
| bfin-global.h | ||
| bfin5xx_spi.h | ||
| bfin_sdh.h | ||
| bfin_simple_timer.h | ||
| bfin_sport.h | ||
| bfrom.h | ||
| bitops.h | ||
| blackfin.h | ||
| bug.h | ||
| bugs.h | ||
| byteorder.h | ||
| cache.h | ||
| cacheflush.h | ||
| cdef_LPBlackfin.h | ||
| checksum.h | ||
| clocks.h | ||
| context.S | ||
| cplb.h | ||
| cplbinit.h | ||
| cpu.h | ||
| cputime.h | ||
| current.h | ||
| def_LPBlackfin.h | ||
| delay.h | ||
| device.h | ||
| div64.h | ||
| dma-mapping.h | ||
| dma.h | ||
| dpmc.h | ||
| early_printk.h | ||
| elf.h | ||
| emergency-restart.h | ||
| entry.h | ||
| errno.h | ||
| fb.h | ||
| fcntl.h | ||
| fixed_code.h | ||
| flat.h | ||
| ftrace.h | ||
| futex.h | ||
| gpio.h | ||
| gptimers.h | ||
| hardirq.h | ||
| hw_irq.h | ||
| io.h | ||
| ioctl.h | ||
| ioctls.h | ||
| ipcbuf.h | ||
| ipipe.h | ||
| ipipe_base.h | ||
| irq.h | ||
| irq_handler.h | ||
| irq_regs.h | ||
| kdebug.h | ||
| kgdb.h | ||
| kmap_types.h | ||
| l1layout.h | ||
| linkage.h | ||
| local.h | ||
| mem_init.h | ||
| mem_map.h | ||
| mman.h | ||
| mmu.h | ||
| mmu_context.h | ||
| module.h | ||
| msgbuf.h | ||
| mutex-dec.h | ||
| mutex.h | ||
| nand.h | ||
| page.h | ||
| page_offset.h | ||
| param.h | ||
| pci.h | ||
| pda.h | ||
| percpu.h | ||
| pgalloc.h | ||
| pgtable.h | ||
| poll.h | ||
| portmux.h | ||
| posix_types.h | ||
| processor.h | ||
| ptrace.h | ||
| reboot.h | ||
| resource.h | ||
| rwlock.h | ||
| scatterlist.h | ||
| sections.h | ||
| segment.h | ||
| sembuf.h | ||
| serial.h | ||
| setup.h | ||
| shmbuf.h | ||
| shmparam.h | ||
| sigcontext.h | ||
| siginfo.h | ||
| signal.h | ||
| smp.h | ||
| socket.h | ||
| sockios.h | ||
| spinlock.h | ||
| spinlock_types.h | ||
| stat.h | ||
| statfs.h | ||
| string.h | ||
| swab.h | ||
| system.h | ||
| termbits.h | ||
| termios.h | ||
| thread_info.h | ||
| time.h | ||
| timex.h | ||
| tlb.h | ||
| tlbflush.h | ||
| topology.h | ||
| trace.h | ||
| traps.h | ||
| types.h | ||
| uaccess.h | ||
| ucontext.h | ||
| unaligned.h | ||
| unistd.h | ||
| user.h | ||
| xor.h | ||