diff mbox series

[v2,14/23] clk: mediatek: clk-mt8192: Move CLK_TOP_CSW_F26M_D2 in top_divs

Message ID 20221223094259.87373-15-angelogioacchino.delregno@collabora.com
State New
Headers
Series MediaTek clocks cleanups and improvements |

Commit Message

AngeloGioacchino Del Regno Dec. 23, 2022, 9:42 a.m. UTC 
  This driver is registered early in clk_mt8192_top_init_early() and
then again in clk_mt8192_top_probe(): the difference between the
two is that the early one is probed with CLK_OF_DECLARE_DRIVER and
the latter is regularly probed as a platform_driver.

Knowing that it is not necessary for this platform to register the
TOP_CSW_F26M_D2 clock that early, move it to top_divs and register
it with the others during platform_driver probe for topckgen;

While at it, since the only reason why the early probe existed was
to register that clock, remove that entirely - leaving this driver
to use only platform_driver.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 drivers/clk/mediatek/clk-mt8192.c | 39 ++++++-------------------------
 1 file changed, 7 insertions(+), 32 deletions(-)

Comments

Miles Chen Dec. 28, 2022, 7:58 a.m. UTC | #1 
> This driver is registered early in clk_mt8192_top_init_early() and
> then again in clk_mt8192_top_probe(): the difference between the
> two is that the early one is probed with CLK_OF_DECLARE_DRIVER and
> the latter is regularly probed as a platform_driver.
> 
> Knowing that it is not necessary for this platform to register the
> TOP_CSW_F26M_D2 clock that early, move it to top_divs and register
> it with the others during platform_driver probe for topckgen;
> 
> While at it, since the only reason why the early probe existed was
> to register that clock, remove that entirely - leaving this driver
> to use only platform_driver.
> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
>

Thanks and this patch makes it easier to convert clk-mt8192 driver to a kernel module.

Reviewed-by: Miles Chen <miles.chen@mediatek.com>
Chen-Yu Tsai Dec. 30, 2022, 5:17 a.m. UTC | #2 
On Fri, Dec 23, 2022 at 5:43 PM AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com> wrote:
>
> This driver is registered early in clk_mt8192_top_init_early() and
> then again in clk_mt8192_top_probe(): the difference between the
> two is that the early one is probed with CLK_OF_DECLARE_DRIVER and
> the latter is regularly probed as a platform_driver.
>
> Knowing that it is not necessary for this platform to register the
> TOP_CSW_F26M_D2 clock that early, move it to top_divs and register
> it with the others during platform_driver probe for topckgen;
>
> While at it, since the only reason why the early probe existed was
> to register that clock, remove that entirely - leaving this driver
> to use only platform_driver.
>
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

I had some other changes dealing with this, but since the systimer DT
fixes have been merged, and this is cleaner,

Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
diff mbox series

Patch

diff --git a/drivers/clk/mediatek/clk-mt8192.c b/drivers/clk/mediatek/clk-mt8192.c
index 9a9d51bfb84d..ec9dc7fe848e 100644
--- a/drivers/clk/mediatek/clk-mt8192.c
+++ b/drivers/clk/mediatek/clk-mt8192.c
@@ -26,10 +26,6 @@  static const struct mtk_fixed_clk top_fixed_clks[] = {
 	FIXED_CLK(CLK_TOP_ULPOSC, "ulposc", NULL, 260000000),
 };
 
-static const struct mtk_fixed_factor top_early_divs[] = {
-	FACTOR(CLK_TOP_CSW_F26M_D2, "csw_f26m_d2", "clk26m", 1, 2),
-};
-
 static const struct mtk_fixed_factor top_divs[] = {
 	FACTOR_FLAGS(CLK_TOP_MAINPLL_D3, "mainpll_d3", "mainpll", 1, 3, 0),
 	FACTOR_FLAGS(CLK_TOP_MAINPLL_D4, "mainpll_d4", "mainpll", 1, 4, 0),
@@ -95,6 +91,7 @@  static const struct mtk_fixed_factor top_divs[] = {
 	FACTOR(CLK_TOP_OSC_D10, "osc_d10", "ulposc", 1, 10),
 	FACTOR(CLK_TOP_OSC_D16, "osc_d16", "ulposc", 1, 16),
 	FACTOR(CLK_TOP_OSC_D20, "osc_d20", "ulposc", 1, 20),
+	FACTOR(CLK_TOP_CSW_F26M_D2, "csw_f26m_d2", "clk26m", 1, 2),
 	FACTOR(CLK_TOP_ADSPPLL, "adsppll_ck", "adsppll", 1, 1),
 	FACTOR_FLAGS(CLK_TOP_UNIVPLL_192M, "univpll_192m", "univpll", 1, 13, 0),
 	FACTOR_FLAGS(CLK_TOP_UNIVPLL_192M_D2, "univpll_192m_d2", "univpll_192m", 1, 2, 0),
@@ -1047,27 +1044,6 @@  static const struct mtk_pll_data plls[] = {
 	      0, 0, 32, 0x0330, 24, 0, 0, 0, 0x0334, 0),
 };
 
-static struct clk_hw_onecell_data *top_clk_data;
-
-static void clk_mt8192_top_init_early(struct device_node *node)
-{
-	int i;
-
-	top_clk_data = mtk_alloc_clk_data(CLK_TOP_NR_CLK);
-	if (!top_clk_data)
-		return;
-
-	for (i = 0; i < CLK_TOP_NR_CLK; i++)
-		top_clk_data->hws[i] = ERR_PTR(-EPROBE_DEFER);
-
-	mtk_clk_register_factors(top_early_divs, ARRAY_SIZE(top_early_divs), top_clk_data);
-
-	of_clk_add_hw_provider(node, of_clk_hw_onecell_get, top_clk_data);
-}
-
-CLK_OF_DECLARE_DRIVER(mt8192_topckgen, "mediatek,mt8192-topckgen",
-		      clk_mt8192_top_init_early);
-
 /* Register mux notifier for MFG mux */
 static int clk_mt8192_reg_mfg_mux_notifier(struct device *dev, struct clk *clk)
 {
@@ -1093,6 +1069,7 @@  static int clk_mt8192_reg_mfg_mux_notifier(struct device *dev, struct clk *clk)
 static int clk_mt8192_top_probe(struct platform_device *pdev)
 {
 	struct device_node *node = pdev->dev.of_node;
+	struct clk_hw_onecell_data *top_clk_data;
 	int r;
 	void __iomem *base;
 
@@ -1100,17 +1077,17 @@  static int clk_mt8192_top_probe(struct platform_device *pdev)
 	if (IS_ERR(base))
 		return PTR_ERR(base);
 
+	top_clk_data = mtk_alloc_clk_data(CLK_TOP_NR_CLK);
+	if (!top_clk_data)
+		return;
+
 	r = mtk_clk_register_fixed_clks(top_fixed_clks, ARRAY_SIZE(top_fixed_clks), top_clk_data);
 	if (r)
 		return r;
 
-	r = mtk_clk_register_factors(top_early_divs, ARRAY_SIZE(top_early_divs), top_clk_data);
-	if (r)
-		goto unregister_fixed_clks;
-
 	r = mtk_clk_register_factors(top_divs, ARRAY_SIZE(top_divs), top_clk_data);
 	if (r)
-		goto unregister_early_factors;
+		goto unregister_fixed_clks;
 
 	r = mtk_clk_register_muxes(top_mtk_muxes, ARRAY_SIZE(top_mtk_muxes), node,
 				   &mt8192_clk_lock, top_clk_data, &pdev->dev);
@@ -1150,8 +1127,6 @@  static int clk_mt8192_top_probe(struct platform_device *pdev)
 	mtk_clk_unregister_muxes(top_mtk_muxes, ARRAY_SIZE(top_mtk_muxes), top_clk_data);
 unregister_factors:
 	mtk_clk_unregister_factors(top_divs, ARRAY_SIZE(top_divs), top_clk_data);
-unregister_early_factors:
-	mtk_clk_unregister_factors(top_early_divs, ARRAY_SIZE(top_early_divs), top_clk_data);
 unregister_fixed_clks:
 	mtk_clk_unregister_fixed_clks(top_fixed_clks, ARRAY_SIZE(top_fixed_clks),
 				      top_clk_data);