linux-kernel - [PATCH v2 21/25] clk: sunxi-ng: h6: Use local parent references for CLK_FIXED

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Date:   Tue, 11 Jun 2019 18:16:54 +0800
From:   Chen-Yu Tsai <wens@...nel.org>
To:     Maxime Ripard <maxime.ripard@...tlin.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Michael Turquette <mturquette@...libre.com>
Cc:     Chen-Yu Tsai <wens@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, Chen-Yu Tsai <wens@...e.org>
Subject: [PATCH v2 21/25] clk: sunxi-ng: h6: Use local parent references for CLK_FIXED_FACTOR

From: Chen-Yu Tsai <wens@...e.org>

With the new clk parenting code and CLK_FIXED_FACTOR_{HW,FW_NAME}
macros, we can reference parents locally via pointers to struct clk_hw
or DT clock-names.

Convert existing CLK_FIXED_FACTOR definitions to either the _HW or
_FW_NAME variant based on whether the parent clock is internal or
external to the CCU.

A forward declaration for struct clk_fixed_factor pll_periph0_4x_clk
is added as the definitions of the fixed factor clocks appear much later
in the file. The position of fixed factor clock definitions will be
moved for all drivers at a later time, before the conversion of all
other clock types.

Acked-by: Maxime Ripard <maxime.ripard@...tlin.com>
Signed-off-by: Chen-Yu Tsai <wens@...e.org>
---
 drivers/clk/sunxi-ng/ccu-sun50i-h6.c | 69 ++++++++++++++++++----------
 1 file changed, 44 insertions(+), 25 deletions(-)

diff --git a/drivers/clk/sunxi-ng/ccu-sun50i-h6.c b/drivers/clk/sunxi-ng/ccu-sun50i-h6.c
index 9d3f98962779..207c65dc5d70 100644
--- a/drivers/clk/sunxi-ng/ccu-sun50i-h6.c
+++ b/drivers/clk/sunxi-ng/ccu-sun50i-h6.c
@@ -622,8 +622,9 @@ static SUNXI_CCU_GATE(bus_xhci_clk, "bus-xhci", "ahb3", 0xa8c, BIT(5), 0);
 static SUNXI_CCU_GATE(bus_ehci3_clk, "bus-ehci3", "ahb3", 0xa8c, BIT(7), 0);
 static SUNXI_CCU_GATE(bus_otg_clk, "bus-otg", "ahb3", 0xa8c, BIT(8), 0);
 
-static CLK_FIXED_FACTOR(pcie_ref_100m_clk, "pcie-ref-100M",
-			"pll-periph0-4x", 24, 1, 0);
+static struct clk_fixed_factor pll_periph0_4x_clk;
+static CLK_FIXED_FACTOR_HW(pcie_ref_100m_clk, "pcie-ref-100M",
+			   &pll_periph0_4x_clk.hw, 24, 1, 0);
 static SUNXI_CCU_GATE(pcie_ref_clk, "pcie-ref", "pcie-ref-100M",
 		      0xab0, BIT(31), 0);
 static SUNXI_CCU_GATE(pcie_ref_out_clk, "pcie-ref-out", "pcie-ref",
@@ -745,34 +746,52 @@ static SUNXI_CCU_M_WITH_MUX_GATE(hdcp_clk, "hdcp", hdcp_parents, 0xc40,
 static SUNXI_CCU_GATE(bus_hdcp_clk, "bus-hdcp", "ahb3", 0xc4c, BIT(0), 0);
 
 /* Fixed factor clocks */
-static CLK_FIXED_FACTOR(osc12M_clk, "osc12M", "osc24M", 2, 1, 0);
+static CLK_FIXED_FACTOR_FW_NAME(osc12M_clk, "osc12M", "hosc", 2, 1, 0);
+
+static const struct clk_hw *clk_parent_pll_audio[] = {
+	&pll_audio_base_clk.common.hw
+};
 
 /*
  * The divider of pll-audio is fixed to 8 now, as pll-audio-4x has a
  * fixed post-divider 2.
  */
-static CLK_FIXED_FACTOR(pll_audio_clk, "pll-audio",
-			"pll-audio-base", 8, 1, CLK_SET_RATE_PARENT);
-static CLK_FIXED_FACTOR(pll_audio_2x_clk, "pll-audio-2x",
-			"pll-audio-base", 4, 1, CLK_SET_RATE_PARENT);
-static CLK_FIXED_FACTOR(pll_audio_4x_clk, "pll-audio-4x",
-			"pll-audio-base", 2, 1, CLK_SET_RATE_PARENT);
-
-static CLK_FIXED_FACTOR(pll_periph0_4x_clk, "pll-periph0-4x",
-			"pll-periph0", 1, 4, 0);
-static CLK_FIXED_FACTOR(pll_periph0_2x_clk, "pll-periph0-2x",
-			"pll-periph0", 1, 2, 0);
-
-static CLK_FIXED_FACTOR(pll_periph1_4x_clk, "pll-periph1-4x",
-			"pll-periph1", 1, 4, 0);
-static CLK_FIXED_FACTOR(pll_periph1_2x_clk, "pll-periph1-2x",
-			"pll-periph1", 1, 2, 0);
-
-static CLK_FIXED_FACTOR(pll_video0_4x_clk, "pll-video0-4x",
-			"pll-video0", 1, 4, CLK_SET_RATE_PARENT);
-
-static CLK_FIXED_FACTOR(pll_video1_4x_clk, "pll-video1-4x",
-			"pll-video1", 1, 4, CLK_SET_RATE_PARENT);
+static CLK_FIXED_FACTOR_HWS(pll_audio_clk, "pll-audio",
+			    clk_parent_pll_audio,
+			    8, 1, CLK_SET_RATE_PARENT);
+static CLK_FIXED_FACTOR_HWS(pll_audio_2x_clk, "pll-audio-2x",
+			    clk_parent_pll_audio,
+			    4, 1, CLK_SET_RATE_PARENT);
+static CLK_FIXED_FACTOR_HWS(pll_audio_4x_clk, "pll-audio-4x",
+			    clk_parent_pll_audio,
+			    2, 1, CLK_SET_RATE_PARENT);
+
+static const struct clk_hw pll_periph0_parents[] = {
+	&pll_periph0_clk.common.hw
+};
+static CLK_FIXED_FACTOR_HWS(pll_periph0_4x_clk, "pll-periph0-4x",
+			    pll_periph0_parents,
+			    1, 4, 0);
+static CLK_FIXED_FACTOR_HWS(pll_periph0_2x_clk, "pll-periph0-2x",
+			    pll_periph0_parents,
+			    1, 2, 0);
+
+static const struct clk_hw pll_periph1_parents[] = {
+	&pll_periph1_clk.common.hw
+};
+static CLK_FIXED_FACTOR_HWS(pll_periph1_4x_clk, "pll-periph1-4x",
+			    pll_periph1_parents,
+			    1, 4, 0);
+static CLK_FIXED_FACTOR_HWS(pll_periph1_2x_clk, "pll-periph1-2x",
+			    pll_periph1_parents,
+			    1, 2, 0);
+
+static CLK_FIXED_FACTOR_HW(pll_video0_4x_clk, "pll-video0-4x",
+			   &pll_video0_clk.common.hw,
+			   1, 4, CLK_SET_RATE_PARENT);
+static CLK_FIXED_FACTOR_HW(pll_video1_4x_clk, "pll-video1-4x",
+			   &pll_video1_clk.common.hw,
+			   1, 4, CLK_SET_RATE_PARENT);
 
 static struct ccu_common *sun50i_h6_ccu_clks[] = {
 	&pll_cpux_clk.common,
-- 
2.20.1