diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.4/0258-clk-bcm2835-expose-raw-clock-registers-via-debugfs.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.4/0258-clk-bcm2835-expose-raw-clock-registers-via-debugfs.patch | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/target/linux/brcm2708/patches-4.4/0258-clk-bcm2835-expose-raw-clock-registers-via-debugfs.patch b/target/linux/brcm2708/patches-4.4/0258-clk-bcm2835-expose-raw-clock-registers-via-debugfs.patch deleted file mode 100644 index b73624566a..0000000000 --- a/target/linux/brcm2708/patches-4.4/0258-clk-bcm2835-expose-raw-clock-registers-via-debugfs.patch +++ /dev/null @@ -1,188 +0,0 @@ -From 480388d3fa7727888533e9a745f05fb363f527f9 Mon Sep 17 00:00:00 2001 -From: Martin Sperl <kernel@martin.sperl.org> -Date: Mon, 29 Feb 2016 14:20:15 +0000 -Subject: [PATCH] clk: bcm2835: expose raw clock-registers via debugfs - -For debugging purposes under some circumstance -it helps to be able to see the actual clock registers. - -E.g: when looking at the clock divider it is helpful to -see what the actual clock divider is. - -This patch exposes all the clock registers specific to each -clock/pll/pll-divider via debugfs. - -Signed-off-by: Martin Sperl <kernel@martin.sperl.org> -Signed-off-by: Eric Anholt <eric@anholt.net> -Acked-by: Eric Anholt <eric@anholt.net> -(cherry picked from commit 96bf9c69d5729781018a00f08e2ae395ec3346b4) ---- - drivers/clk/bcm/clk-bcm2835.c | 101 ++++++++++++++++++++++++++++++++++++++++++ - 1 file changed, 101 insertions(+) - ---- a/drivers/clk/bcm/clk-bcm2835.c -+++ b/drivers/clk/bcm/clk-bcm2835.c -@@ -37,6 +37,7 @@ - #include <linux/clk-provider.h> - #include <linux/clkdev.h> - #include <linux/clk/bcm2835.h> -+#include <linux/debugfs.h> - #include <linux/module.h> - #include <linux/of.h> - #include <linux/platform_device.h> -@@ -313,6 +314,27 @@ static inline u32 cprman_read(struct bcm - return readl(cprman->regs + reg); - } - -+static int bcm2835_debugfs_regset(struct bcm2835_cprman *cprman, u32 base, -+ struct debugfs_reg32 *regs, size_t nregs, -+ struct dentry *dentry) -+{ -+ struct dentry *regdump; -+ struct debugfs_regset32 *regset; -+ -+ regset = devm_kzalloc(cprman->dev, sizeof(*regset), GFP_KERNEL); -+ if (!regset) -+ return -ENOMEM; -+ -+ regset->regs = regs; -+ regset->nregs = nregs; -+ regset->base = cprman->regs + base; -+ -+ regdump = debugfs_create_regset32("regdump", S_IRUGO, dentry, -+ regset); -+ -+ return regdump ? 0 : -ENOMEM; -+} -+ - /* - * These are fixed clocks. They're probably not all root clocks and it may - * be possible to turn them on and off but until this is mapped out better -@@ -1044,6 +1066,36 @@ static int bcm2835_pll_set_rate(struct c - return 0; - } - -+static int bcm2835_pll_debug_init(struct clk_hw *hw, -+ struct dentry *dentry) -+{ -+ struct bcm2835_pll *pll = container_of(hw, struct bcm2835_pll, hw); -+ struct bcm2835_cprman *cprman = pll->cprman; -+ const struct bcm2835_pll_data *data = pll->data; -+ struct debugfs_reg32 *regs; -+ -+ regs = devm_kzalloc(cprman->dev, 7 * sizeof(*regs), GFP_KERNEL); -+ if (!regs) -+ return -ENOMEM; -+ -+ regs[0].name = "cm_ctrl"; -+ regs[0].offset = data->cm_ctrl_reg; -+ regs[1].name = "a2w_ctrl"; -+ regs[1].offset = data->a2w_ctrl_reg; -+ regs[2].name = "frac"; -+ regs[2].offset = data->frac_reg; -+ regs[3].name = "ana0"; -+ regs[3].offset = data->ana_reg_base + 0 * 4; -+ regs[4].name = "ana1"; -+ regs[4].offset = data->ana_reg_base + 1 * 4; -+ regs[5].name = "ana2"; -+ regs[5].offset = data->ana_reg_base + 2 * 4; -+ regs[6].name = "ana3"; -+ regs[6].offset = data->ana_reg_base + 3 * 4; -+ -+ return bcm2835_debugfs_regset(cprman, 0, regs, 7, dentry); -+} -+ - static const struct clk_ops bcm2835_pll_clk_ops = { - .is_prepared = bcm2835_pll_is_on, - .prepare = bcm2835_pll_on, -@@ -1051,6 +1103,7 @@ static const struct clk_ops bcm2835_pll_ - .recalc_rate = bcm2835_pll_get_rate, - .set_rate = bcm2835_pll_set_rate, - .round_rate = bcm2835_pll_round_rate, -+ .debug_init = bcm2835_pll_debug_init, - }; - - struct bcm2835_pll_divider { -@@ -1153,6 +1206,26 @@ static int bcm2835_pll_divider_set_rate( - return 0; - } - -+static int bcm2835_pll_divider_debug_init(struct clk_hw *hw, -+ struct dentry *dentry) -+{ -+ struct bcm2835_pll_divider *divider = bcm2835_pll_divider_from_hw(hw); -+ struct bcm2835_cprman *cprman = divider->cprman; -+ const struct bcm2835_pll_divider_data *data = divider->data; -+ struct debugfs_reg32 *regs; -+ -+ regs = devm_kzalloc(cprman->dev, 7 * sizeof(*regs), GFP_KERNEL); -+ if (!regs) -+ return -ENOMEM; -+ -+ regs[0].name = "cm"; -+ regs[0].offset = data->cm_reg; -+ regs[1].name = "a2w"; -+ regs[1].offset = data->a2w_reg; -+ -+ return bcm2835_debugfs_regset(cprman, 0, regs, 2, dentry); -+} -+ - static const struct clk_ops bcm2835_pll_divider_clk_ops = { - .is_prepared = bcm2835_pll_divider_is_on, - .prepare = bcm2835_pll_divider_on, -@@ -1160,6 +1233,7 @@ static const struct clk_ops bcm2835_pll_ - .recalc_rate = bcm2835_pll_divider_get_rate, - .set_rate = bcm2835_pll_divider_set_rate, - .round_rate = bcm2835_pll_divider_round_rate, -+ .debug_init = bcm2835_pll_divider_debug_init, - }; - - /* -@@ -1401,6 +1475,31 @@ static u8 bcm2835_clock_get_parent(struc - return (src & CM_SRC_MASK) >> CM_SRC_SHIFT; - } - -+static struct debugfs_reg32 bcm2835_debugfs_clock_reg32[] = { -+ { -+ .name = "ctl", -+ .offset = 0, -+ }, -+ { -+ .name = "div", -+ .offset = 4, -+ }, -+}; -+ -+static int bcm2835_clock_debug_init(struct clk_hw *hw, -+ struct dentry *dentry) -+{ -+ struct bcm2835_clock *clock = bcm2835_clock_from_hw(hw); -+ struct bcm2835_cprman *cprman = clock->cprman; -+ const struct bcm2835_clock_data *data = clock->data; -+ -+ return bcm2835_debugfs_regset( -+ cprman, data->ctl_reg, -+ bcm2835_debugfs_clock_reg32, -+ ARRAY_SIZE(bcm2835_debugfs_clock_reg32), -+ dentry); -+} -+ - static const struct clk_ops bcm2835_clock_clk_ops = { - .is_prepared = bcm2835_clock_is_on, - .prepare = bcm2835_clock_on, -@@ -1410,6 +1509,7 @@ static const struct clk_ops bcm2835_cloc - .determine_rate = bcm2835_clock_determine_rate, - .set_parent = bcm2835_clock_set_parent, - .get_parent = bcm2835_clock_get_parent, -+ .debug_init = bcm2835_clock_debug_init, - }; - - static int bcm2835_vpu_clock_is_on(struct clk_hw *hw) -@@ -1428,6 +1528,7 @@ static const struct clk_ops bcm2835_vpu_ - .determine_rate = bcm2835_clock_determine_rate, - .set_parent = bcm2835_clock_set_parent, - .get_parent = bcm2835_clock_get_parent, -+ .debug_init = bcm2835_clock_debug_init, - }; - - static struct clk *bcm2835_register_pll(struct bcm2835_cprman *cprman, |