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Newsgroups: fa.linux.kernel
From: Alexey Dobriyan <adobri...@gmail.com>
Date: Thu, 06 Oct 2005 17:13:31 UTC
Local: Thurs, Oct 6 2005 1:13 pm
Subject: Re: Fwd: Telecom Clock Driver for MPCBL0010 ATCA computer blade
> --- linux-2.6.14-rc2-mm2/drivers/char/tlclk.c Can you drop ioctl part of interface and leave only sysfs one? > +++ linux-2.6.14-rc2-mm2-tlclk/drivers/char/tlclk.c > +#ifdef TLCLK_IOCTL - > +static int > +tlclk_ioctl(struct inode *inode, > + struct file *filp, unsigned int cmd, unsigned long arg) > +{ > + unsigned long flags; > + unsigned char val; > + int ret_val = 0; > + > + val = (unsigned char)arg; > + if (_IOC_TYPE(cmd) != TLCLK_IOC_MAGIC) > + return -ENOTTY; > + > + if (_IOC_NR(cmd) > TLCLK_IOC_MAXNR) > + return -ENOTTY; > + > + spin_lock_irqsave(&event_lock, flags); > + switch (cmd) { > + case IOCTL_RESET: > + SET_PORT_BITS(TLCLK_REG4, 0xfd, val); > + break; > + case IOCTL_MODE_SELECT: > + SET_PORT_BITS(TLCLK_REG0, 0xcf, val); > + break; > + case IOCTL_REFALIGN: > + /* GENERATING 0 to 1 transistion */ > + SET_PORT_BITS(TLCLK_REG0, 0xf7, 0); > + udelay(2); > + SET_PORT_BITS(TLCLK_REG0, 0xf7, 0x08); > + udelay(2); > + SET_PORT_BITS(TLCLK_REG0, 0xf7, 0); > + break; > + case IOCTL_HARDWARE_SWITCHING: > + SET_PORT_BITS(TLCLK_REG0, 0x7f, val); > + break; > + case IOCTL_HARDWARE_SWITCHING_MODE: > + SET_PORT_BITS(TLCLK_REG0, 0xbf, val); > + break; > + case IOCTL_FILTER_SELECT: > + SET_PORT_BITS(TLCLK_REG0, 0xfb, val); > + break; > + case IOCTL_SELECT_REF_FREQUENCY: > + SET_PORT_BITS(TLCLK_REG1, 0xfd, val); > + break; > + case IOCTL_SELECT_REDUNDANT_CLOCK: > + SET_PORT_BITS(TLCLK_REG1, 0xfe, val); > + break; > + case IOCTL_SELECT_AMCB1_TRANSMIT_CLOCK: > + if ((val == CLK_8kHz) || (val == CLK_16_384MHz)) { > + SET_PORT_BITS(TLCLK_REG3, 0xf8, 0x5); > + SET_PORT_BITS(TLCLK_REG1, 0xfb, ~val); > + } else if (val >= CLK_8_592MHz) { > + SET_PORT_BITS(TLCLK_REG3, 0xf8, 0x7); > + switch (val) { > + case CLK_8_592MHz: > + SET_PORT_BITS(TLCLK_REG0, 0xfc, 1); > + break; > + case CLK_11_184MHz: > + SET_PORT_BITS(TLCLK_REG0, 0xfc, 0); > + break; > + case CLK_34_368MHz: > + SET_PORT_BITS(TLCLK_REG0, 0xfc, 3); > + break; > + case CLK_44_736MHz: > + SET_PORT_BITS(TLCLK_REG0, 0xfc, 2); > + break; > + } > + } else > + SET_PORT_BITS(TLCLK_REG3, 0xf8, val); > + break; > + case IOCTL_SELECT_AMCB2_TRANSMIT_CLOCK: > + if ((val == CLK_8kHz) || (val == CLK_16_384MHz)) { > + SET_PORT_BITS(TLCLK_REG3, 0xc7, 0x28); > + SET_PORT_BITS(TLCLK_REG1, 0xfb, ~val); > + } else if (val >= CLK_8_592MHz) { > + SET_PORT_BITS(TLCLK_REG3, 0xc7, 0x38); > + switch (val) { > + case CLK_8_592MHz: > + SET_PORT_BITS(TLCLK_REG0, 0xfc, 1); > + break; > + case CLK_11_184MHz: > + SET_PORT_BITS(TLCLK_REG0, 0xfc, 0); > + break; > + case CLK_34_368MHz: > + SET_PORT_BITS(TLCLK_REG0, 0xfc, 3); > + break; > + case CLK_44_736MHz: > + SET_PORT_BITS(TLCLK_REG0, 0xfc, 2); > + break; > + } > + } else > + SET_PORT_BITS(TLCLK_REG3, 0xc7, val << 3); > + break; > + case IOCTL_TEST_MODE: > + SET_PORT_BITS(TLCLK_REG4, 0xfd, 2); > + break; > + case IOCTL_ENABLE_CLKA0_OUTPUT: > + SET_PORT_BITS(TLCLK_REG2, 0xfe, val); > + break; > + case IOCTL_ENABLE_CLKB0_OUTPUT: > + SET_PORT_BITS(TLCLK_REG2, 0xfd, val << 1); > + break; > + case IOCTL_ENABLE_CLKA1_OUTPUT: > + SET_PORT_BITS(TLCLK_REG2, 0xfb, val << 2); > + break; > + case IOCTL_ENABLE_CLKB1_OUTPUT: > + SET_PORT_BITS(TLCLK_REG2, 0xf7, val << 3); > + break; > + case IOCTL_ENABLE_CLK3A_OUTPUT: > + SET_PORT_BITS(TLCLK_REG3, 0xbf, val << 6); > + break; > + case IOCTL_ENABLE_CLK3B_OUTPUT: > + SET_PORT_BITS(TLCLK_REG3, 0x7f, val << 7); > + break; > + case IOCTL_READ_ALARMS: > + ret_val = (inb(TLCLK_REG2) & 0xf0); > + break; > + case IOCTL_READ_INTERRUPT_SWITCH: > + ret_val = inb(TLCLK_REG6); > + break; > + case IOCTL_READ_CURRENT_REF: > + ret_val = ((inb(TLCLK_REG1) & 0x08) >> 3); > + break; > + } > + spin_unlock_irqrestore(&event_lock, flags); > + > + return ret_val; > +} > +#endif To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ You must Sign in before you can post messages.
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