diff options
author | Jonas Gorski <jonas.gorski@gmail.com> | 2017-10-29 23:28:39 +0100 |
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committer | Jonas Gorski <jonas.gorski@gmail.com> | 2017-10-29 23:41:00 +0100 |
commit | 1d30869cd2f589b27227428863ebd201099106ce (patch) | |
tree | 187edc7af6c080d45cd7d94c06eda2993b5bc0fb /target/linux/ar7/patches-4.1/160-vlynq_try_remote_first.patch | |
parent | be11b3b1c71945fbac359104a21d55f245800c7b (diff) | |
download | upstream-1d30869cd2f589b27227428863ebd201099106ce.tar.gz upstream-1d30869cd2f589b27227428863ebd201099106ce.tar.bz2 upstream-1d30869cd2f589b27227428863ebd201099106ce.zip |
ar7: drop unused 4.1 support
Kernel 4.1 isn't support anymore anyway.
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Diffstat (limited to 'target/linux/ar7/patches-4.1/160-vlynq_try_remote_first.patch')
-rw-r--r-- | target/linux/ar7/patches-4.1/160-vlynq_try_remote_first.patch | 300 |
1 files changed, 0 insertions, 300 deletions
diff --git a/target/linux/ar7/patches-4.1/160-vlynq_try_remote_first.patch b/target/linux/ar7/patches-4.1/160-vlynq_try_remote_first.patch deleted file mode 100644 index 1d1310d82e..0000000000 --- a/target/linux/ar7/patches-4.1/160-vlynq_try_remote_first.patch +++ /dev/null @@ -1,300 +0,0 @@ ---- a/drivers/vlynq/vlynq.c -+++ b/drivers/vlynq/vlynq.c -@@ -119,20 +119,40 @@ static int vlynq_linked(struct vlynq_dev - return 0; - } - -+static volatile int vlynq_delay_value_new = 0; -+ -+static void vlynq_delay_wait(u32 count) -+{ -+ /* Code adopted from original vlynq driver */ -+ int i = 0; -+ volatile int *ptr = &vlynq_delay_value_new; -+ *ptr = 0; -+ -+ /* We are assuming that the each cycle takes about -+ * 23 assembly instructions. */ -+ for(i = 0; i < (count + 23)/23; i++) -+ *ptr = *ptr + 1; -+} -+ - static void vlynq_reset(struct vlynq_device *dev) - { -+ u32 rtm = readl(&dev->local->revision); -+ -+ rtm = rtm < 0x00010205 || readl(&dev->local->status) & 0x800 == 0 ? -+ 0 : 0x600000; -+ - writel(readl(&dev->local->control) | VLYNQ_CTRL_RESET, - &dev->local->control); - - /* Wait for the devices to finish resetting */ -- msleep(5); -+ vlynq_delay_wait(0xffffff); - - /* Remove reset bit */ -- writel(readl(&dev->local->control) & ~VLYNQ_CTRL_RESET, -+ writel(readl(&dev->local->control) & ~VLYNQ_CTRL_RESET | rtm, - &dev->local->control); - - /* Give some time for the devices to settle */ -- msleep(5); -+ vlynq_delay_wait(0xffffff); - } - - static void vlynq_irq_unmask(struct irq_data *d) -@@ -379,6 +399,61 @@ void vlynq_unregister_driver(struct vlyn - } - EXPORT_SYMBOL(vlynq_unregister_driver); - -+enum vlynq_clk_src { -+ vlynq_clk_external, -+ vlynq_clk_local, -+ vlynq_clk_remote, -+ vlynq_clk_invalid, -+}; -+ -+static int __vlynq_set_clocks(struct vlynq_device *dev, -+ enum vlynq_clk_src clk_dir, -+ int lclk_div, int rclk_div) -+{ -+ u32 reg; -+ -+ if (clk_dir == vlynq_clk_invalid) { -+ printk(KERN_ERR "%s: attempt to set invalid clocking\n", -+ dev_name(&dev->dev)); -+ return -EINVAL; -+ } -+ -+ reg = readl(&dev->local->control); -+ if (readl(&dev->local->revision) < 0x00010205) { -+ if (clk_dir & vlynq_clk_local) -+ reg |= VLYNQ_CTRL_CLOCK_INT; -+ else -+ reg &= ~VLYNQ_CTRL_CLOCK_INT; -+ } -+ reg &= ~VLYNQ_CTRL_CLOCK_MASK; -+ reg |= VLYNQ_CTRL_CLOCK_DIV(lclk_div); -+ writel(reg, &dev->local->control); -+ -+ if (!vlynq_linked(dev)) -+ return -ENODEV; -+ -+ printk(KERN_INFO "%s: local VLYNQ protocol rev. is 0x%08x\n", -+ dev_name(&dev->dev), readl(&dev->local->revision)); -+ printk(KERN_INFO "%s: remote VLYNQ protocol rev. is 0x%08x\n", -+ dev_name(&dev->dev), readl(&dev->remote->revision)); -+ -+ reg = readl(&dev->remote->control); -+ if (readl(&dev->remote->revision) < 0x00010205) { -+ if (clk_dir & vlynq_clk_remote) -+ reg |= VLYNQ_CTRL_CLOCK_INT; -+ else -+ reg &= ~VLYNQ_CTRL_CLOCK_INT; -+ } -+ reg &= ~VLYNQ_CTRL_CLOCK_MASK; -+ reg |= VLYNQ_CTRL_CLOCK_DIV(rclk_div); -+ writel(reg, &dev->remote->control); -+ -+ if (!vlynq_linked(dev)) -+ return -ENODEV; -+ -+ return 0; -+} -+ - /* - * A VLYNQ remote device can clock the VLYNQ bus master - * using a dedicated clock line. In that case, both the -@@ -392,29 +467,16 @@ static int __vlynq_try_remote(struct vly - int i; - - vlynq_reset(dev); -- for (i = dev->dev_id ? vlynq_rdiv2 : vlynq_rdiv8; dev->dev_id ? -- i <= vlynq_rdiv8 : i >= vlynq_rdiv2; -- dev->dev_id ? i++ : i--) { -+ for (i = 0; i <= 7; i++) { - - if (!vlynq_linked(dev)) - break; - -- writel((readl(&dev->remote->control) & -- ~VLYNQ_CTRL_CLOCK_MASK) | -- VLYNQ_CTRL_CLOCK_INT | -- VLYNQ_CTRL_CLOCK_DIV(i - vlynq_rdiv1), -- &dev->remote->control); -- writel((readl(&dev->local->control) -- & ~(VLYNQ_CTRL_CLOCK_INT | -- VLYNQ_CTRL_CLOCK_MASK)) | -- VLYNQ_CTRL_CLOCK_DIV(i - vlynq_rdiv1), -- &dev->local->control); -- -- if (vlynq_linked(dev)) { -- printk(KERN_DEBUG -- "%s: using remote clock divisor %d\n", -- dev_name(&dev->dev), i - vlynq_rdiv1 + 1); -- dev->divisor = i; -+ if (!__vlynq_set_clocks(dev, vlynq_clk_remote, i, i)) { -+ printk(KERN_INFO -+ "%s: using remote clock divisor %d\n", -+ dev_name(&dev->dev), i + 1); -+ dev->divisor = i + vlynq_rdiv1; - return 0; - } else { - vlynq_reset(dev); -@@ -433,25 +495,17 @@ static int __vlynq_try_remote(struct vly - */ - static int __vlynq_try_local(struct vlynq_device *dev) - { -- int i; -+ int i, dir = !dev->dev_id; - - vlynq_reset(dev); - -- for (i = dev->dev_id ? vlynq_ldiv2 : vlynq_ldiv8; dev->dev_id ? -- i <= vlynq_ldiv8 : i >= vlynq_ldiv2; -- dev->dev_id ? i++ : i--) { -- -- writel((readl(&dev->local->control) & -- ~VLYNQ_CTRL_CLOCK_MASK) | -- VLYNQ_CTRL_CLOCK_INT | -- VLYNQ_CTRL_CLOCK_DIV(i - vlynq_ldiv1), -- &dev->local->control); -- -- if (vlynq_linked(dev)) { -- printk(KERN_DEBUG -- "%s: using local clock divisor %d\n", -- dev_name(&dev->dev), i - vlynq_ldiv1 + 1); -- dev->divisor = i; -+ for (i = dir ? 7 : 0; dir ? i >= 0 : i <= 7; dir ? i-- : i++) { -+ -+ if (!__vlynq_set_clocks(dev, vlynq_clk_local, i, 0)) { -+ printk(KERN_INFO -+ "%s: using local clock divisor %d\n", -+ dev_name(&dev->dev), i + 1); -+ dev->divisor = i + vlynq_ldiv1; - return 0; - } else { - vlynq_reset(dev); -@@ -473,18 +527,10 @@ static int __vlynq_try_external(struct v - if (!vlynq_linked(dev)) - return -ENODEV; - -- writel((readl(&dev->remote->control) & -- ~VLYNQ_CTRL_CLOCK_INT), -- &dev->remote->control); -- -- writel((readl(&dev->local->control) & -- ~VLYNQ_CTRL_CLOCK_INT), -- &dev->local->control); -- -- if (vlynq_linked(dev)) { -- printk(KERN_DEBUG "%s: using external clock\n", -- dev_name(&dev->dev)); -- dev->divisor = vlynq_div_external; -+ if (!__vlynq_set_clocks(dev, vlynq_clk_external, 0, 0)) { -+ printk(KERN_INFO "%s: using external clock\n", -+ dev_name(&dev->dev)); -+ dev->divisor = vlynq_div_external; - return 0; - } - -@@ -501,24 +547,16 @@ static int __vlynq_enable_device(struct - return result; - - switch (dev->divisor) { -- case vlynq_div_external: - case vlynq_div_auto: - /* When the device is brought from reset it should have clock - * generation negotiated by hardware. - * Check which device is generating clocks and perform setup - * accordingly */ -- if (vlynq_linked(dev) && readl(&dev->remote->control) & -- VLYNQ_CTRL_CLOCK_INT) { -- if (!__vlynq_try_remote(dev) || -- !__vlynq_try_local(dev) || -- !__vlynq_try_external(dev)) -- return 0; -- } else { -- if (!__vlynq_try_external(dev) || -- !__vlynq_try_local(dev) || -- !__vlynq_try_remote(dev)) -- return 0; -- } -+ if (!__vlynq_try_remote(dev) || !__vlynq_try_local(dev)) -+ return 0; -+ case vlynq_div_external: -+ if (!__vlynq_try_external(dev)) -+ return 0; - break; - case vlynq_ldiv1: - case vlynq_ldiv2: -@@ -528,15 +566,12 @@ static int __vlynq_enable_device(struct - case vlynq_ldiv6: - case vlynq_ldiv7: - case vlynq_ldiv8: -- writel(VLYNQ_CTRL_CLOCK_INT | -- VLYNQ_CTRL_CLOCK_DIV(dev->divisor - -- vlynq_ldiv1), &dev->local->control); -- writel(0, &dev->remote->control); -- if (vlynq_linked(dev)) { -- printk(KERN_DEBUG -- "%s: using local clock divisor %d\n", -- dev_name(&dev->dev), -- dev->divisor - vlynq_ldiv1 + 1); -+ if (!__vlynq_set_clocks(dev, vlynq_clk_local, dev->divisor - -+ vlynq_ldiv1, 0)) { -+ printk(KERN_INFO -+ "%s: using local clock divisor %d\n", -+ dev_name(&dev->dev), -+ dev->divisor - vlynq_ldiv1 + 1); - return 0; - } - break; -@@ -548,20 +583,17 @@ static int __vlynq_enable_device(struct - case vlynq_rdiv6: - case vlynq_rdiv7: - case vlynq_rdiv8: -- writel(0, &dev->local->control); -- writel(VLYNQ_CTRL_CLOCK_INT | -- VLYNQ_CTRL_CLOCK_DIV(dev->divisor - -- vlynq_rdiv1), &dev->remote->control); -- if (vlynq_linked(dev)) { -- printk(KERN_DEBUG -- "%s: using remote clock divisor %d\n", -- dev_name(&dev->dev), -- dev->divisor - vlynq_rdiv1 + 1); -+ if (!__vlynq_set_clocks(dev, vlynq_clk_remote, 0, -+ dev->divisor - vlynq_rdiv1)) { -+ printk(KERN_INFO -+ "%s: using remote clock divisor %d\n", -+ dev_name(&dev->dev), -+ dev->divisor - vlynq_rdiv1 + 1); - return 0; - } - break; - } -- -+ vlynq_reset(dev); - ops->off(dev); - return -ENODEV; - } -@@ -732,14 +764,14 @@ static int vlynq_probe(struct platform_d - platform_set_drvdata(pdev, dev); - - printk(KERN_INFO "%s: regs 0x%p, irq %d, mem 0x%p\n", -- dev_name(&dev->dev), (void *)dev->regs_start, dev->irq, -- (void *)dev->mem_start); -+ dev_name(&dev->dev), (void *)dev->regs_start, -+ dev->irq, (void *)dev->mem_start); - - dev->dev_id = 0; - dev->divisor = vlynq_div_auto; -- result = __vlynq_enable_device(dev); -- if (result == 0) { -+ if (!__vlynq_enable_device(dev)) { - dev->dev_id = readl(&dev->remote->chip); -+ vlynq_reset(dev); - ((struct plat_vlynq_ops *)(dev->dev.platform_data))->off(dev); - } - if (dev->dev_id) |