From: H Hartley Sweeten Date: Thu, 21 Jun 2012 02:25:16 +0000 (-0700) Subject: staging: comedi: s626: remove forward declarations 2 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=6b387b7095cabbb8bd31c936ed3d47ef758cc595;p=linux-beck.git staging: comedi: s626: remove forward declarations 2 Move the DEBI* i/o functions up to remove the need for the forward declarations. Signed-off-by: H Hartley Sweeten Cc: Ian Abbott Cc: Frank Mori Hess Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/comedi/drivers/s626.c b/drivers/staging/comedi/drivers/s626.c index 08868066a4d9..1efa2f021647 100644 --- a/drivers/staging/comedi/drivers/s626.c +++ b/drivers/staging/comedi/drivers/s626.c @@ -220,9 +220,6 @@ static uint8_t I2Cread(struct comedi_device *dev, uint8_t addr); static uint32_t I2Chandshake(struct comedi_device *dev, uint32_t val); static void SetDAC(struct comedi_device *dev, uint16_t chan, short dacdata); static void SendDAC(struct comedi_device *dev, uint32_t val); -static void DEBItransfer(struct comedi_device *dev); -static uint16_t DEBIread(struct comedi_device *dev, uint16_t addr); -static void DEBIwrite(struct comedi_device *dev, uint16_t addr, uint16_t wdata); /* COUNTER OBJECT ------------------------------------------------ */ struct enc_private { @@ -426,6 +423,76 @@ static const struct comedi_lrange s626_range_table = { 2, { } }; +/* Execute a DEBI transfer. This must be called from within a */ +/* critical section. */ +static void DEBItransfer(struct comedi_device *dev) +{ + /* Initiate upload of shadow RAM to DEBI control register. */ + MC_ENABLE(P_MC2, MC2_UPLD_DEBI); + + /* Wait for completion of upload from shadow RAM to DEBI control */ + /* register. */ + while (!MC_TEST(P_MC2, MC2_UPLD_DEBI)) + ; + + /* Wait until DEBI transfer is done. */ + while (RR7146(P_PSR) & PSR_DEBI_S) + ; +} + +/* Initialize the DEBI interface for all transfers. */ + +static uint16_t DEBIread(struct comedi_device *dev, uint16_t addr) +{ + uint16_t retval; + + /* Set up DEBI control register value in shadow RAM. */ + WR7146(P_DEBICMD, DEBI_CMD_RDWORD | addr); + + /* Execute the DEBI transfer. */ + DEBItransfer(dev); + + /* Fetch target register value. */ + retval = (uint16_t) RR7146(P_DEBIAD); + + /* Return register value. */ + return retval; +} + +/* Write a value to a gate array register. */ +static void DEBIwrite(struct comedi_device *dev, uint16_t addr, uint16_t wdata) +{ + + /* Set up DEBI control register value in shadow RAM. */ + WR7146(P_DEBICMD, DEBI_CMD_WRWORD | addr); + WR7146(P_DEBIAD, wdata); + + /* Execute the DEBI transfer. */ + DEBItransfer(dev); +} + +/* Replace the specified bits in a gate array register. Imports: mask + * specifies bits that are to be preserved, wdata is new value to be + * or'd with the masked original. + */ +static void DEBIreplace(struct comedi_device *dev, uint16_t addr, uint16_t mask, + uint16_t wdata) +{ + + /* Copy target gate array register into P_DEBIAD register. */ + WR7146(P_DEBICMD, DEBI_CMD_RDWORD | addr); + /* Set up DEBI control reg value in shadow RAM. */ + DEBItransfer(dev); /* Execute the DEBI Read transfer. */ + + /* Write back the modified image. */ + WR7146(P_DEBICMD, DEBI_CMD_WRWORD | addr); + /* Set up DEBI control reg value in shadow RAM. */ + + WR7146(P_DEBIAD, wdata | ((uint16_t) RR7146(P_DEBIAD) & mask)); + /* Modify the register image. */ + DEBItransfer(dev); /* Execute the DEBI Write transfer. */ +} + static unsigned int s626_ai_reg_to_uint(int data) { unsigned int tempdata; @@ -2123,76 +2190,6 @@ static void WriteMISC2(struct comedi_device *dev, uint16_t NewImage) DEBIwrite(dev, LP_MISC1, MISC1_WDISABLE); /* Disable writes to MISC2. */ } -/* Initialize the DEBI interface for all transfers. */ - -static uint16_t DEBIread(struct comedi_device *dev, uint16_t addr) -{ - uint16_t retval; - - /* Set up DEBI control register value in shadow RAM. */ - WR7146(P_DEBICMD, DEBI_CMD_RDWORD | addr); - - /* Execute the DEBI transfer. */ - DEBItransfer(dev); - - /* Fetch target register value. */ - retval = (uint16_t) RR7146(P_DEBIAD); - - /* Return register value. */ - return retval; -} - -/* Execute a DEBI transfer. This must be called from within a */ -/* critical section. */ -static void DEBItransfer(struct comedi_device *dev) -{ - /* Initiate upload of shadow RAM to DEBI control register. */ - MC_ENABLE(P_MC2, MC2_UPLD_DEBI); - - /* Wait for completion of upload from shadow RAM to DEBI control */ - /* register. */ - while (!MC_TEST(P_MC2, MC2_UPLD_DEBI)) - ; - - /* Wait until DEBI transfer is done. */ - while (RR7146(P_PSR) & PSR_DEBI_S) - ; -} - -/* Write a value to a gate array register. */ -static void DEBIwrite(struct comedi_device *dev, uint16_t addr, uint16_t wdata) -{ - - /* Set up DEBI control register value in shadow RAM. */ - WR7146(P_DEBICMD, DEBI_CMD_WRWORD | addr); - WR7146(P_DEBIAD, wdata); - - /* Execute the DEBI transfer. */ - DEBItransfer(dev); -} - -/* Replace the specified bits in a gate array register. Imports: mask - * specifies bits that are to be preserved, wdata is new value to be - * or'd with the masked original. - */ -static void DEBIreplace(struct comedi_device *dev, uint16_t addr, uint16_t mask, - uint16_t wdata) -{ - - /* Copy target gate array register into P_DEBIAD register. */ - WR7146(P_DEBICMD, DEBI_CMD_RDWORD | addr); - /* Set up DEBI control reg value in shadow RAM. */ - DEBItransfer(dev); /* Execute the DEBI Read transfer. */ - - /* Write back the modified image. */ - WR7146(P_DEBICMD, DEBI_CMD_WRWORD | addr); - /* Set up DEBI control reg value in shadow RAM. */ - - WR7146(P_DEBIAD, wdata | ((uint16_t) RR7146(P_DEBIAD) & mask)); - /* Modify the register image. */ - DEBItransfer(dev); /* Execute the DEBI Write transfer. */ -} - static void CloseDMAB(struct comedi_device *dev, struct bufferDMA *pdma, size_t bsize) {