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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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[PATCH] tlclk driver update
some driver clean ups, and a re-posting of changes that are needed to match the updated TPS. Signed-off-by: Mark Gross <mark.gross@intel.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
mark gross
Linus Torvalds
parent
da9bb1d27b
commit
648bf4fb21
@ -34,7 +34,6 @@
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#include <linux/kernel.h> /* printk() */
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#include <linux/fs.h> /* everything... */
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#include <linux/errno.h> /* error codes */
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#include <linux/delay.h> /* udelay */
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#include <linux/slab.h>
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#include <linux/ioport.h>
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#include <linux/interrupt.h>
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@ -156,6 +155,8 @@ This directory exports the following interfaces. There operation is
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documented in the MCPBL0010 TPS under the Telecom Clock API section, 11.4.
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alarms :
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current_ref :
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received_ref_clk3a :
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received_ref_clk3b :
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enable_clk3a_output :
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enable_clk3b_output :
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enable_clka0_output :
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@ -165,7 +166,7 @@ enable_clkb1_output :
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filter_select :
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hardware_switching :
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hardware_switching_mode :
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interrupt_switch :
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telclock_version :
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mode_select :
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refalign :
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reset :
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@ -173,7 +174,6 @@ select_amcb1_transmit_clock :
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select_amcb2_transmit_clock :
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select_redundant_clock :
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select_ref_frequency :
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test_mode :
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All sysfs interfaces are integers in hex format, i.e echo 99 > refalign
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has the same effect as echo 0x99 > refalign.
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@ -226,7 +226,7 @@ static int tlclk_release(struct inode *inode, struct file *filp)
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return 0;
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}
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ssize_t tlclk_read(struct file *filp, char __user *buf, size_t count,
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static ssize_t tlclk_read(struct file *filp, char __user *buf, size_t count,
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loff_t *f_pos)
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{
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if (count < sizeof(struct tlclk_alarms))
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@ -242,7 +242,7 @@ ssize_t tlclk_read(struct file *filp, char __user *buf, size_t count,
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return sizeof(struct tlclk_alarms);
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}
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ssize_t tlclk_write(struct file *filp, const char __user *buf, size_t count,
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static ssize_t tlclk_write(struct file *filp, const char __user *buf, size_t count,
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loff_t *f_pos)
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{
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return 0;
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@ -278,21 +278,21 @@ static ssize_t show_current_ref(struct device *d,
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static DEVICE_ATTR(current_ref, S_IRUGO, show_current_ref, NULL);
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static ssize_t show_interrupt_switch(struct device *d,
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static ssize_t show_telclock_version(struct device *d,
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struct device_attribute *attr, char *buf)
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{
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unsigned long ret_val;
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unsigned long flags;
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spin_lock_irqsave(&event_lock, flags);
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ret_val = inb(TLCLK_REG6);
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ret_val = inb(TLCLK_REG5);
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spin_unlock_irqrestore(&event_lock, flags);
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return sprintf(buf, "0x%lX\n", ret_val);
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}
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static DEVICE_ATTR(interrupt_switch, S_IRUGO,
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show_interrupt_switch, NULL);
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static DEVICE_ATTR(telclock_version, S_IRUGO,
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show_telclock_version, NULL);
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static ssize_t show_alarms(struct device *d,
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struct device_attribute *attr, char *buf)
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@ -309,6 +309,50 @@ static ssize_t show_alarms(struct device *d,
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static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
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static ssize_t store_received_ref_clk3a(struct device *d,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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unsigned long tmp;
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unsigned char val;
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unsigned long flags;
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sscanf(buf, "%lX", &tmp);
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dev_dbg(d, ": tmp = 0x%lX\n", tmp);
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val = (unsigned char)tmp;
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spin_lock_irqsave(&event_lock, flags);
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SET_PORT_BITS(TLCLK_REG1, 0xef, val);
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spin_unlock_irqrestore(&event_lock, flags);
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return strnlen(buf, count);
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}
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static DEVICE_ATTR(received_ref_clk3a, S_IWUGO, NULL,
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store_received_ref_clk3a);
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static ssize_t store_received_ref_clk3b(struct device *d,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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unsigned long tmp;
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unsigned char val;
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unsigned long flags;
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sscanf(buf, "%lX", &tmp);
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dev_dbg(d, ": tmp = 0x%lX\n", tmp);
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val = (unsigned char)tmp;
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spin_lock_irqsave(&event_lock, flags);
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SET_PORT_BITS(TLCLK_REG1, 0xef, val << 1);
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spin_unlock_irqrestore(&event_lock, flags);
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return strnlen(buf, count);
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}
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static DEVICE_ATTR(received_ref_clk3b, S_IWUGO, NULL,
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store_received_ref_clk3b);
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static ssize_t store_enable_clk3b_output(struct device *d,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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@ -436,26 +480,6 @@ static ssize_t store_enable_clka0_output(struct device *d,
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static DEVICE_ATTR(enable_clka0_output, S_IWUGO, NULL,
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store_enable_clka0_output);
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static ssize_t store_test_mode(struct device *d,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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unsigned long flags;
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unsigned long tmp;
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unsigned char val;
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sscanf(buf, "%lX", &tmp);
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dev_dbg(d, "tmp = 0x%lX\n", tmp);
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val = (unsigned char)tmp;
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spin_lock_irqsave(&event_lock, flags);
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SET_PORT_BITS(TLCLK_REG4, 0xfd, 2);
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spin_unlock_irqrestore(&event_lock, flags);
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return strnlen(buf, count);
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}
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static DEVICE_ATTR(test_mode, S_IWUGO, NULL, store_test_mode);
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static ssize_t store_select_amcb2_transmit_clock(struct device *d,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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@ -475,7 +499,7 @@ static ssize_t store_select_amcb2_transmit_clock(struct device *d,
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SET_PORT_BITS(TLCLK_REG3, 0xc7, 0x38);
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switch (val) {
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case CLK_8_592MHz:
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SET_PORT_BITS(TLCLK_REG0, 0xfc, 1);
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SET_PORT_BITS(TLCLK_REG0, 0xfc, 2);
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break;
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case CLK_11_184MHz:
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SET_PORT_BITS(TLCLK_REG0, 0xfc, 0);
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@ -484,7 +508,7 @@ static ssize_t store_select_amcb2_transmit_clock(struct device *d,
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SET_PORT_BITS(TLCLK_REG0, 0xfc, 3);
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break;
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case CLK_44_736MHz:
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SET_PORT_BITS(TLCLK_REG0, 0xfc, 2);
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SET_PORT_BITS(TLCLK_REG0, 0xfc, 1);
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break;
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}
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} else
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@ -653,9 +677,7 @@ static ssize_t store_refalign (struct device *d,
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dev_dbg(d, "tmp = 0x%lX\n", tmp);
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spin_lock_irqsave(&event_lock, flags);
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SET_PORT_BITS(TLCLK_REG0, 0xf7, 0);
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udelay(2);
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SET_PORT_BITS(TLCLK_REG0, 0xf7, 0x08);
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udelay(2);
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SET_PORT_BITS(TLCLK_REG0, 0xf7, 0);
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spin_unlock_irqrestore(&event_lock, flags);
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@ -706,15 +728,16 @@ static DEVICE_ATTR(reset, S_IWUGO, NULL, store_reset);
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static struct attribute *tlclk_sysfs_entries[] = {
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&dev_attr_current_ref.attr,
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&dev_attr_interrupt_switch.attr,
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&dev_attr_telclock_version.attr,
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&dev_attr_alarms.attr,
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&dev_attr_received_ref_clk3a.attr,
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&dev_attr_received_ref_clk3b.attr,
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&dev_attr_enable_clk3a_output.attr,
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&dev_attr_enable_clk3b_output.attr,
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&dev_attr_enable_clkb1_output.attr,
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&dev_attr_enable_clka1_output.attr,
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&dev_attr_enable_clkb0_output.attr,
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&dev_attr_enable_clka0_output.attr,
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&dev_attr_test_mode.attr,
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&dev_attr_select_amcb1_transmit_clock.attr,
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&dev_attr_select_amcb2_transmit_clock.attr,
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&dev_attr_select_redundant_clock.attr,
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