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openwrtv4/target/linux/ipq806x/patches/0128-clk-qcom-Add-support-for-banked-MD-RCGs.patch

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ipq806x: Add support for IPQ806x chip family Patches are generated using the "format-patch" command from the following location: *https://www.codeaurora.org/cgit/quic/kernel/galak-msm/log/?h=apq_ipq_base *rev=0771849495b4128cac2faf7d49c85c729fc48b20 Patches numbered 76/77/102/103 have already been integrated in 3.14.12, so they're not in this list. All these patches are either integrated are pending integration into kernel.org, therefore these patches should go away once the kernel gets upgraded to 3.16. Support is currently limited to AP148 board but can be extended to other platforms in the future. These changes do not cover ethernet connectivity. Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org> SVN-Revision: 42334
2014-08-30 09:32:58 +00:00
From 856324d2daa3246ac62d7920d6a274e1fa35bcf5 Mon Sep 17 00:00:00 2001
From: Stephen Boyd <sboyd@codeaurora.org>
Date: Mon, 28 Apr 2014 15:59:16 -0700
Subject: [PATCH 128/182] clk: qcom: Add support for banked MD RCGs
The banked MD RCGs in global clock control have a different
register layout than the ones implemented in multimedia clock
control. Add support for these types of clocks so we can change
the rates of the UBI32 clocks.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
---
drivers/clk/qcom/clk-rcg.c | 99 ++++++++++++++++++++-------------------
drivers/clk/qcom/clk-rcg.h | 5 +-
drivers/clk/qcom/mmcc-msm8960.c | 24 +++++++---
3 files changed, 73 insertions(+), 55 deletions(-)
diff --git a/drivers/clk/qcom/clk-rcg.c b/drivers/clk/qcom/clk-rcg.c
index abfc2b6..7bce729 100644
--- a/drivers/clk/qcom/clk-rcg.c
+++ b/drivers/clk/qcom/clk-rcg.c
@@ -67,16 +67,16 @@ static u8 clk_dyn_rcg_get_parent(struct clk_hw *hw)
{
struct clk_dyn_rcg *rcg = to_clk_dyn_rcg(hw);
int num_parents = __clk_get_num_parents(hw->clk);
- u32 ns, ctl;
+ u32 ns, reg;
int bank;
int i;
struct src_sel *s;
- regmap_read(rcg->clkr.regmap, rcg->clkr.enable_reg, &ctl);
- bank = reg_to_bank(rcg, ctl);
+ regmap_read(rcg->clkr.regmap, rcg->bank_reg, &reg);
+ bank = reg_to_bank(rcg, reg);
s = &rcg->s[bank];
- regmap_read(rcg->clkr.regmap, rcg->ns_reg, &ns);
+ regmap_read(rcg->clkr.regmap, rcg->ns_reg[bank], &ns);
ns = ns_to_src(s, ns);
for (i = 0; i < num_parents; i++)
@@ -192,90 +192,93 @@ static u32 mn_to_reg(struct mn *mn, u32 m, u32 n, u32 val)
static void configure_bank(struct clk_dyn_rcg *rcg, const struct freq_tbl *f)
{
- u32 ns, md, ctl, *regp;
+ u32 ns, md, reg;
int bank, new_bank;
struct mn *mn;
struct pre_div *p;
struct src_sel *s;
bool enabled;
- u32 md_reg;
- u32 bank_reg;
+ u32 md_reg, ns_reg;
bool banked_mn = !!rcg->mn[1].width;
+ bool banked_p = !!rcg->p[1].pre_div_width;
struct clk_hw *hw = &rcg->clkr.hw;
enabled = __clk_is_enabled(hw->clk);
- regmap_read(rcg->clkr.regmap, rcg->ns_reg, &ns);
- regmap_read(rcg->clkr.regmap, rcg->clkr.enable_reg, &ctl);
-
- if (banked_mn) {
- regp = &ctl;
- bank_reg = rcg->clkr.enable_reg;
- } else {
- regp = &ns;
- bank_reg = rcg->ns_reg;
- }
-
- bank = reg_to_bank(rcg, *regp);
+ regmap_read(rcg->clkr.regmap, rcg->bank_reg, &reg);
+ bank = reg_to_bank(rcg, reg);
new_bank = enabled ? !bank : bank;
+ ns_reg = rcg->ns_reg[new_bank];
+ regmap_read(rcg->clkr.regmap, ns_reg, &ns);
+
if (banked_mn) {
mn = &rcg->mn[new_bank];
md_reg = rcg->md_reg[new_bank];
ns |= BIT(mn->mnctr_reset_bit);
- regmap_write(rcg->clkr.regmap, rcg->ns_reg, ns);
+ regmap_write(rcg->clkr.regmap, ns_reg, ns);
regmap_read(rcg->clkr.regmap, md_reg, &md);
md = mn_to_md(mn, f->m, f->n, md);
regmap_write(rcg->clkr.regmap, md_reg, md);
ns = mn_to_ns(mn, f->m, f->n, ns);
- regmap_write(rcg->clkr.regmap, rcg->ns_reg, ns);
+ regmap_write(rcg->clkr.regmap, ns_reg, ns);
- ctl = mn_to_reg(mn, f->m, f->n, ctl);
- regmap_write(rcg->clkr.regmap, rcg->clkr.enable_reg, ctl);
+ /* Two NS registers means mode control is in NS register */
+ if (rcg->ns_reg[0] != rcg->ns_reg[1]) {
+ ns = mn_to_reg(mn, f->m, f->n, ns);
+ regmap_write(rcg->clkr.regmap, ns_reg, ns);
+ } else {
+ reg = mn_to_reg(mn, f->m, f->n, reg);
+ regmap_write(rcg->clkr.regmap, rcg->bank_reg, reg);
+ }
ns &= ~BIT(mn->mnctr_reset_bit);
- regmap_write(rcg->clkr.regmap, rcg->ns_reg, ns);
- } else {
+ regmap_write(rcg->clkr.regmap, ns_reg, ns);
+ }
+
+ if (banked_p) {
p = &rcg->p[new_bank];
ns = pre_div_to_ns(p, f->pre_div - 1, ns);
}
s = &rcg->s[new_bank];
ns = src_to_ns(s, s->parent_map[f->src], ns);
- regmap_write(rcg->clkr.regmap, rcg->ns_reg, ns);
+ regmap_write(rcg->clkr.regmap, ns_reg, ns);
if (enabled) {
- *regp ^= BIT(rcg->mux_sel_bit);
- regmap_write(rcg->clkr.regmap, bank_reg, *regp);
+ regmap_read(rcg->clkr.regmap, rcg->bank_reg, &reg);
+ reg ^= BIT(rcg->mux_sel_bit);
+ regmap_write(rcg->clkr.regmap, rcg->bank_reg, reg);
}
}
static int clk_dyn_rcg_set_parent(struct clk_hw *hw, u8 index)
{
struct clk_dyn_rcg *rcg = to_clk_dyn_rcg(hw);
- u32 ns, ctl, md, reg;
+ u32 ns, md, reg;
int bank;
struct freq_tbl f = { 0 };
bool banked_mn = !!rcg->mn[1].width;
+ bool banked_p = !!rcg->p[1].pre_div_width;
- regmap_read(rcg->clkr.regmap, rcg->ns_reg, &ns);
- regmap_read(rcg->clkr.regmap, rcg->clkr.enable_reg, &ctl);
- reg = banked_mn ? ctl : ns;
-
+ regmap_read(rcg->clkr.regmap, rcg->bank_reg, &reg);
bank = reg_to_bank(rcg, reg);
+ regmap_read(rcg->clkr.regmap, rcg->ns_reg[bank], &ns);
+
if (banked_mn) {
regmap_read(rcg->clkr.regmap, rcg->md_reg[bank], &md);
f.m = md_to_m(&rcg->mn[bank], md);
f.n = ns_m_to_n(&rcg->mn[bank], ns, f.m);
- } else {
- f.pre_div = ns_to_pre_div(&rcg->p[bank], ns) + 1;
}
- f.src = index;
+ if (banked_p)
+ f.pre_div = ns_to_pre_div(&rcg->p[bank], ns) + 1;
+
+ f.src = index;
configure_bank(rcg, &f);
return 0;
@@ -336,28 +339,30 @@ clk_dyn_rcg_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
u32 m, n, pre_div, ns, md, mode, reg;
int bank;
struct mn *mn;
+ bool banked_p = !!rcg->p[1].pre_div_width;
bool banked_mn = !!rcg->mn[1].width;
- regmap_read(rcg->clkr.regmap, rcg->ns_reg, &ns);
-
- if (banked_mn)
- regmap_read(rcg->clkr.regmap, rcg->clkr.enable_reg, &reg);
- else
- reg = ns;
-
+ regmap_read(rcg->clkr.regmap, rcg->bank_reg, &reg);
bank = reg_to_bank(rcg, reg);
+ regmap_read(rcg->clkr.regmap, rcg->ns_reg[bank], &ns);
+ m = n = pre_div = mode = 0;
+
if (banked_mn) {
mn = &rcg->mn[bank];
regmap_read(rcg->clkr.regmap, rcg->md_reg[bank], &md);
m = md_to_m(mn, md);
n = ns_m_to_n(mn, ns, m);
+ /* Two NS registers means mode control is in NS register */
+ if (rcg->ns_reg[0] != rcg->ns_reg[1])
+ reg = ns;
mode = reg_to_mnctr_mode(mn, reg);
- return calc_rate(parent_rate, m, n, mode, 0);
- } else {
- pre_div = ns_to_pre_div(&rcg->p[bank], ns);
- return calc_rate(parent_rate, 0, 0, 0, pre_div);
}
+
+ if (banked_p)
+ pre_div = ns_to_pre_div(&rcg->p[bank], ns);
+
+ return calc_rate(parent_rate, m, n, mode, pre_div);
}
static const
diff --git a/drivers/clk/qcom/clk-rcg.h b/drivers/clk/qcom/clk-rcg.h
index b9ec11d..5f8b06d 100644
--- a/drivers/clk/qcom/clk-rcg.h
+++ b/drivers/clk/qcom/clk-rcg.h
@@ -102,7 +102,7 @@ extern const struct clk_ops clk_rcg_ops;
* struct clk_dyn_rcg - root clock generator with glitch free mux
*
* @mux_sel_bit: bit to switch glitch free mux
- * @ns_reg: NS register
+ * @ns_reg: NS0 and NS1 register
* @md_reg: MD0 and MD1 register
* @mn: mn counter (banked)
* @s: source selector (banked)
@@ -112,8 +112,9 @@ extern const struct clk_ops clk_rcg_ops;
*
*/
struct clk_dyn_rcg {
- u32 ns_reg;
+ u32 ns_reg[2];
u32 md_reg[2];
+ u32 bank_reg;
u8 mux_sel_bit;
diff --git a/drivers/clk/qcom/mmcc-msm8960.c b/drivers/clk/qcom/mmcc-msm8960.c
index 12f3c0b..ce48ad1 100644
--- a/drivers/clk/qcom/mmcc-msm8960.c
+++ b/drivers/clk/qcom/mmcc-msm8960.c
@@ -726,9 +726,11 @@ static struct freq_tbl clk_tbl_gfx2d[] = {
};
static struct clk_dyn_rcg gfx2d0_src = {
- .ns_reg = 0x0070,
+ .ns_reg[0] = 0x0070,
+ .ns_reg[1] = 0x0070,
.md_reg[0] = 0x0064,
.md_reg[1] = 0x0068,
+ .bank_reg = 0x0060,
.mn[0] = {
.mnctr_en_bit = 8,
.mnctr_reset_bit = 25,
@@ -784,9 +786,11 @@ static struct clk_branch gfx2d0_clk = {
};
static struct clk_dyn_rcg gfx2d1_src = {
- .ns_reg = 0x007c,
+ .ns_reg[0] = 0x007c,
+ .ns_reg[1] = 0x007c,
.md_reg[0] = 0x0078,
.md_reg[1] = 0x006c,
+ .bank_reg = 0x0074,
.mn[0] = {
.mnctr_en_bit = 8,
.mnctr_reset_bit = 25,
@@ -862,9 +866,11 @@ static struct freq_tbl clk_tbl_gfx3d[] = {
};
static struct clk_dyn_rcg gfx3d_src = {
- .ns_reg = 0x008c,
+ .ns_reg[0] = 0x008c,
+ .ns_reg[1] = 0x008c,
.md_reg[0] = 0x0084,
.md_reg[1] = 0x0088,
+ .bank_reg = 0x0080,
.mn[0] = {
.mnctr_en_bit = 8,
.mnctr_reset_bit = 25,
@@ -1051,9 +1057,11 @@ static struct freq_tbl clk_tbl_mdp[] = {
};
static struct clk_dyn_rcg mdp_src = {
- .ns_reg = 0x00d0,
+ .ns_reg[0] = 0x00d0,
+ .ns_reg[1] = 0x00d0,
.md_reg[0] = 0x00c4,
.md_reg[1] = 0x00c8,
+ .bank_reg = 0x00c0,
.mn[0] = {
.mnctr_en_bit = 8,
.mnctr_reset_bit = 31,
@@ -1158,7 +1166,9 @@ static struct freq_tbl clk_tbl_rot[] = {
};
static struct clk_dyn_rcg rot_src = {
- .ns_reg = 0x00e8,
+ .ns_reg[0] = 0x00e8,
+ .ns_reg[1] = 0x00e8,
+ .bank_reg = 0x00e8,
.p[0] = {
.pre_div_shift = 22,
.pre_div_width = 4,
@@ -1355,9 +1365,11 @@ static struct freq_tbl clk_tbl_vcodec[] = {
};
static struct clk_dyn_rcg vcodec_src = {
- .ns_reg = 0x0100,
+ .ns_reg[0] = 0x0100,
+ .ns_reg[1] = 0x0100,
.md_reg[0] = 0x00fc,
.md_reg[1] = 0x0128,
+ .bank_reg = 0x00f8,
.mn[0] = {
.mnctr_en_bit = 5,
.mnctr_reset_bit = 31,
--
1.7.10.4
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