From b08bfa38c06e0edbf6f434f6db3943e82d32239f Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Fri, 7 Sep 2012 17:43:36 -0700 Subject: [PATCH] staging: comedi: me4000: remove ai context The ai context is a struct containing all the register addresses used with the ai subdevice. These can easily be calculated when needed. Remove the me4000_ai_context struct, its intialization function, and it's variable in the private data. Signed-off-by: H Hartley Sweeten Cc: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/me4000.c | 121 +++++++++--------------- drivers/staging/comedi/drivers/me4000.h | 19 ---- 2 files changed, 43 insertions(+), 97 deletions(-) diff --git a/drivers/staging/comedi/drivers/me4000.c b/drivers/staging/comedi/drivers/me4000.c index b6effb0d460a..5d696d6dee52 100644 --- a/drivers/staging/comedi/drivers/me4000.c +++ b/drivers/staging/comedi/drivers/me4000.c @@ -218,7 +218,6 @@ static const struct me4000_board me4000_boards[] = { static int init_board_info(struct comedi_device *dev, struct pci_dev *pci_dev_p); static int init_ao_context(struct comedi_device *dev); -static int init_ai_context(struct comedi_device *dev); static int xilinx_download(struct comedi_device *dev); static int reset_board(struct comedi_device *dev); @@ -320,10 +319,6 @@ found: if (result) return result; - result = init_ai_context(dev); - if (result) - return result; - result = xilinx_download(dev); if (result) return result; @@ -447,37 +442,6 @@ static int init_ao_context(struct comedi_device *dev) return 0; } -static int init_ai_context(struct comedi_device *dev) -{ - info->ai_context.irq = info->irq; - - info->ai_context.ctrl_reg = dev->iobase + ME4000_AI_CTRL_REG; - info->ai_context.status_reg = - dev->iobase + ME4000_AI_STATUS_REG; - info->ai_context.channel_list_reg = - dev->iobase + ME4000_AI_CHANNEL_LIST_REG; - info->ai_context.data_reg = dev->iobase + ME4000_AI_DATA_REG; - info->ai_context.chan_timer_reg = - dev->iobase + ME4000_AI_CHAN_TIMER_REG; - info->ai_context.chan_pre_timer_reg = - dev->iobase + ME4000_AI_CHAN_PRE_TIMER_REG; - info->ai_context.scan_timer_low_reg = - dev->iobase + ME4000_AI_SCAN_TIMER_LOW_REG; - info->ai_context.scan_timer_high_reg = - dev->iobase + ME4000_AI_SCAN_TIMER_HIGH_REG; - info->ai_context.scan_pre_timer_low_reg = - dev->iobase + ME4000_AI_SCAN_PRE_TIMER_LOW_REG; - info->ai_context.scan_pre_timer_high_reg = - dev->iobase + ME4000_AI_SCAN_PRE_TIMER_HIGH_REG; - info->ai_context.start_reg = dev->iobase + ME4000_AI_START_REG; - info->ai_context.irq_status_reg = - dev->iobase + ME4000_IRQ_STATUS_REG; - info->ai_context.sample_counter_reg = - dev->iobase + ME4000_AI_SAMPLE_COUNTER_REG; - - return 0; -} - #define FIRMWARE_NOT_AVAILABLE 1 #if FIRMWARE_NOT_AVAILABLE extern unsigned char *xilinx_firm; @@ -697,34 +661,34 @@ static int me4000_ai_insn_read(struct comedi_device *dev, entry |= ME4000_AI_LIST_LAST_ENTRY; /* Clear channel list, data fifo and both stop bits */ - tmp = inl(info->ai_context.ctrl_reg); + tmp = inl(dev->iobase + ME4000_AI_CTRL_REG); tmp &= ~(ME4000_AI_CTRL_BIT_CHANNEL_FIFO | ME4000_AI_CTRL_BIT_DATA_FIFO | ME4000_AI_CTRL_BIT_STOP | ME4000_AI_CTRL_BIT_IMMEDIATE_STOP); - outl(tmp, info->ai_context.ctrl_reg); + outl(tmp, dev->iobase + ME4000_AI_CTRL_REG); /* Set the acquisition mode to single */ tmp &= ~(ME4000_AI_CTRL_BIT_MODE_0 | ME4000_AI_CTRL_BIT_MODE_1 | ME4000_AI_CTRL_BIT_MODE_2); - outl(tmp, info->ai_context.ctrl_reg); + outl(tmp, dev->iobase + ME4000_AI_CTRL_REG); /* Enable channel list and data fifo */ tmp |= ME4000_AI_CTRL_BIT_CHANNEL_FIFO | ME4000_AI_CTRL_BIT_DATA_FIFO; - outl(tmp, info->ai_context.ctrl_reg); + outl(tmp, dev->iobase + ME4000_AI_CTRL_REG); /* Generate channel list entry */ - outl(entry, info->ai_context.channel_list_reg); + outl(entry, dev->iobase + ME4000_AI_CHANNEL_LIST_REG); /* Set the timer to maximum sample rate */ - outl(ME4000_AI_MIN_TICKS, info->ai_context.chan_timer_reg); - outl(ME4000_AI_MIN_TICKS, info->ai_context.chan_pre_timer_reg); + outl(ME4000_AI_MIN_TICKS, dev->iobase + ME4000_AI_CHAN_TIMER_REG); + outl(ME4000_AI_MIN_TICKS, dev->iobase + ME4000_AI_CHAN_PRE_TIMER_REG); /* Start conversion by dummy read */ - inl(info->ai_context.start_reg); + inl(dev->iobase + ME4000_AI_START_REG); /* Wait until ready */ udelay(10); - if (!(inl(info->ai_context.status_reg) & + if (!(inl(dev->iobase + ME4000_AI_STATUS_REG) & ME4000_AI_STATUS_BIT_EF_DATA)) { printk(KERN_ERR "comedi%d: me4000: me4000_ai_insn_read(): " @@ -733,7 +697,7 @@ static int me4000_ai_insn_read(struct comedi_device *dev, } /* Read value from data fifo */ - lval = inl(info->ai_context.data_reg) & 0xFFFF; + lval = inl(dev->iobase + ME4000_AI_DATA_REG) & 0xFFFF; data[0] = lval ^ 0x8000; return 1; @@ -745,12 +709,12 @@ static int me4000_ai_cancel(struct comedi_device *dev, unsigned long tmp; /* Stop any running conversion */ - tmp = inl(info->ai_context.ctrl_reg); + tmp = inl(dev->iobase + ME4000_AI_CTRL_REG); tmp &= ~(ME4000_AI_CTRL_BIT_STOP | ME4000_AI_CTRL_BIT_IMMEDIATE_STOP); - outl(tmp, info->ai_context.ctrl_reg); + outl(tmp, dev->iobase + ME4000_AI_CTRL_REG); /* Clear the control register */ - outl(0x0, info->ai_context.ctrl_reg); + outl(0x0, dev->iobase + ME4000_AI_CTRL_REG); return 0; } @@ -897,16 +861,16 @@ static void ai_write_timer(struct comedi_device *dev, unsigned int init_ticks, unsigned int scan_ticks, unsigned int chan_ticks) { - outl(init_ticks - 1, info->ai_context.scan_pre_timer_low_reg); - outl(0x0, info->ai_context.scan_pre_timer_high_reg); + outl(init_ticks - 1, dev->iobase + ME4000_AI_SCAN_PRE_TIMER_LOW_REG); + outl(0x0, dev->iobase + ME4000_AI_SCAN_PRE_TIMER_HIGH_REG); if (scan_ticks) { - outl(scan_ticks - 1, info->ai_context.scan_timer_low_reg); - outl(0x0, info->ai_context.scan_timer_high_reg); + outl(scan_ticks - 1, dev->iobase + ME4000_AI_SCAN_TIMER_LOW_REG); + outl(0x0, dev->iobase + ME4000_AI_SCAN_TIMER_HIGH_REG); } - outl(chan_ticks - 1, info->ai_context.chan_pre_timer_reg); - outl(chan_ticks - 1, info->ai_context.chan_timer_reg); + outl(chan_ticks - 1, dev->iobase + ME4000_AI_CHAN_PRE_TIMER_REG); + outl(chan_ticks - 1, dev->iobase + ME4000_AI_CHAN_TIMER_REG); } static int ai_prepare(struct comedi_device *dev, @@ -922,7 +886,7 @@ static int ai_prepare(struct comedi_device *dev, ai_write_timer(dev, init_ticks, scan_ticks, chan_ticks); /* Reset control register */ - outl(tmp, info->ai_context.ctrl_reg); + outl(tmp, dev->iobase + ME4000_AI_CTRL_REG); /* Start sources */ if ((cmd->start_src == TRIG_EXT && @@ -956,19 +920,19 @@ static int ai_prepare(struct comedi_device *dev, /* Stop triggers */ if (cmd->stop_src == TRIG_COUNT) { outl(cmd->chanlist_len * cmd->stop_arg, - info->ai_context.sample_counter_reg); + dev->iobase + ME4000_AI_SAMPLE_COUNTER_REG); tmp |= ME4000_AI_CTRL_BIT_HF_IRQ | ME4000_AI_CTRL_BIT_SC_IRQ; } else if (cmd->stop_src == TRIG_NONE && cmd->scan_end_src == TRIG_COUNT) { outl(cmd->scan_end_arg, - info->ai_context.sample_counter_reg); + dev->iobase + ME4000_AI_SAMPLE_COUNTER_REG); tmp |= ME4000_AI_CTRL_BIT_HF_IRQ | ME4000_AI_CTRL_BIT_SC_IRQ; } else { tmp |= ME4000_AI_CTRL_BIT_HF_IRQ; } /* Write the setup to the control register */ - outl(tmp, info->ai_context.ctrl_reg); + outl(tmp, dev->iobase + ME4000_AI_CTRL_REG); /* Write the channel list */ ai_write_chanlist(dev, s, cmd); @@ -1006,7 +970,7 @@ static int ai_write_chanlist(struct comedi_device *dev, else entry |= ME4000_AI_LIST_INPUT_SINGLE_ENDED; - outl(entry, info->ai_context.channel_list_reg); + outl(entry, dev->iobase + ME4000_AI_CHANNEL_LIST_REG); } return 0; @@ -1038,7 +1002,7 @@ static int me4000_ai_do_cmd(struct comedi_device *dev, return err; /* Start acquistion by dummy read */ - inl(info->ai_context.start_reg); + inl(dev->iobase + ME4000_AI_START_REG); return 0; } @@ -1402,7 +1366,6 @@ static irqreturn_t me4000_ai_isr(int irq, void *dev_id) unsigned int tmp; struct comedi_device *dev = dev_id; struct comedi_subdevice *s = &dev->subdevices[0]; - struct me4000_ai_context *ai_context = &info->ai_context; int i; int c = 0; long lval; @@ -1414,17 +1377,17 @@ static irqreturn_t me4000_ai_isr(int irq, void *dev_id) s->async->events = 0; /* Check if irq number is right */ - if (irq != ai_context->irq) { + if (irq != info->irq) { printk(KERN_ERR "comedi%d: me4000: me4000_ai_isr(): " "Incorrect interrupt num: %d\n", dev->minor, irq); return IRQ_HANDLED; } - if (inl(ai_context->irq_status_reg) & + if (inl(dev->iobase + ME4000_IRQ_STATUS_REG) & ME4000_IRQ_STATUS_BIT_AI_HF) { /* Read status register to find out what happened */ - tmp = inl(ai_context->ctrl_reg); + tmp = inl(dev->iobase + ME4000_AI_CTRL_REG); if (!(tmp & ME4000_AI_STATUS_BIT_FF_DATA) && !(tmp & ME4000_AI_STATUS_BIT_HF_DATA) && @@ -1438,7 +1401,7 @@ static irqreturn_t me4000_ai_isr(int irq, void *dev_id) tmp |= ME4000_AI_CTRL_BIT_IMMEDIATE_STOP; tmp &= ~(ME4000_AI_CTRL_BIT_HF_IRQ | ME4000_AI_CTRL_BIT_SC_IRQ); - outl(tmp, ai_context->ctrl_reg); + outl(tmp, dev->iobase + ME4000_AI_CTRL_REG); s->async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA; @@ -1464,7 +1427,7 @@ static irqreturn_t me4000_ai_isr(int irq, void *dev_id) tmp |= ME4000_AI_CTRL_BIT_IMMEDIATE_STOP; tmp &= ~(ME4000_AI_CTRL_BIT_HF_IRQ | ME4000_AI_CTRL_BIT_SC_IRQ); - outl(tmp, ai_context->ctrl_reg); + outl(tmp, dev->iobase + ME4000_AI_CTRL_REG); s->async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA; @@ -1475,7 +1438,7 @@ static irqreturn_t me4000_ai_isr(int irq, void *dev_id) for (i = 0; i < c; i++) { /* Read value from data fifo */ - lval = inl(ai_context->data_reg) & 0xFFFF; + lval = inl(dev->iobase + ME4000_AI_DATA_REG) & 0xFFFF; lval ^= 0x8000; if (!comedi_buf_put(s->async, lval)) { @@ -1486,7 +1449,7 @@ static irqreturn_t me4000_ai_isr(int irq, void *dev_id) tmp |= ME4000_AI_CTRL_BIT_IMMEDIATE_STOP; tmp &= ~(ME4000_AI_CTRL_BIT_HF_IRQ | ME4000_AI_CTRL_BIT_SC_IRQ); - outl(tmp, ai_context->ctrl_reg); + outl(tmp, dev->iobase + ME4000_AI_CTRL_REG); s->async->events |= COMEDI_CB_OVERFLOW; @@ -1500,27 +1463,29 @@ static irqreturn_t me4000_ai_isr(int irq, void *dev_id) /* Work is done, so reset the interrupt */ tmp |= ME4000_AI_CTRL_BIT_HF_IRQ_RESET; - outl(tmp, ai_context->ctrl_reg); + outl(tmp, dev->iobase + ME4000_AI_CTRL_REG); tmp &= ~ME4000_AI_CTRL_BIT_HF_IRQ_RESET; - outl(tmp, ai_context->ctrl_reg); + outl(tmp, dev->iobase + ME4000_AI_CTRL_REG); } - if (inl(ai_context->irq_status_reg) & ME4000_IRQ_STATUS_BIT_SC) { + if (inl(dev->iobase + ME4000_IRQ_STATUS_REG) & + ME4000_IRQ_STATUS_BIT_SC) { s->async->events |= COMEDI_CB_BLOCK | COMEDI_CB_EOA; /* * Acquisition is complete, so stop * conversion and disable all interrupts */ - tmp = inl(ai_context->ctrl_reg); + tmp = inl(dev->iobase + ME4000_AI_CTRL_REG); tmp |= ME4000_AI_CTRL_BIT_IMMEDIATE_STOP; tmp &= ~(ME4000_AI_CTRL_BIT_HF_IRQ | ME4000_AI_CTRL_BIT_SC_IRQ); - outl(tmp, ai_context->ctrl_reg); + outl(tmp, dev->iobase + ME4000_AI_CTRL_REG); /* Poll data until fifo empty */ - while (inl(ai_context->ctrl_reg) & ME4000_AI_STATUS_BIT_EF_DATA) { + while (inl(dev->iobase + ME4000_AI_CTRL_REG) & + ME4000_AI_STATUS_BIT_EF_DATA) { /* Read value from data fifo */ - lval = inl(ai_context->data_reg) & 0xFFFF; + lval = inl(dev->iobase + ME4000_AI_DATA_REG) & 0xFFFF; lval ^= 0x8000; if (!comedi_buf_put(s->async, lval)) { @@ -1534,9 +1499,9 @@ static irqreturn_t me4000_ai_isr(int irq, void *dev_id) /* Work is done, so reset the interrupt */ tmp |= ME4000_AI_CTRL_BIT_SC_IRQ_RESET; - outl(tmp, ai_context->ctrl_reg); + outl(tmp, dev->iobase + ME4000_AI_CTRL_REG); tmp &= ~ME4000_AI_CTRL_BIT_SC_IRQ_RESET; - outl(tmp, ai_context->ctrl_reg); + outl(tmp, dev->iobase + ME4000_AI_CTRL_REG); } if (s->async->events) diff --git a/drivers/staging/comedi/drivers/me4000.h b/drivers/staging/comedi/drivers/me4000.h index c7187f19d3a9..0cb0fea335fb 100644 --- a/drivers/staging/comedi/drivers/me4000.h +++ b/drivers/staging/comedi/drivers/me4000.h @@ -247,24 +247,6 @@ struct me4000_ao_context { unsigned long preload_reg; }; -struct me4000_ai_context { - int irq; - - unsigned long ctrl_reg; - unsigned long status_reg; - unsigned long channel_list_reg; - unsigned long data_reg; - unsigned long chan_timer_reg; - unsigned long chan_pre_timer_reg; - unsigned long scan_timer_low_reg; - unsigned long scan_timer_high_reg; - unsigned long scan_pre_timer_low_reg; - unsigned long scan_pre_timer_high_reg; - unsigned long start_reg; - unsigned long irq_status_reg; - unsigned long sample_counter_reg; -}; - struct me4000_info { unsigned long plx_regbase; /* PLX configuration space base address */ unsigned long timer_regbase; /* Base address of the timer circuit */ @@ -279,7 +261,6 @@ struct me4000_info { unsigned int irq; /* IRQ assigned from the PCI BIOS */ - struct me4000_ai_context ai_context; /* Analog input specific context */ struct me4000_ao_context ao_context[4]; /* Vector with analog output specific context */ }; -- 2.20.1