[PATCH 2/4] clk: tegra: convert Tegra114 gate clocks to table

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This patch converts the Tegra114 gate clock registration to be table driven
like the periph clocks. The same struct tegra_periph_init_data is used for the
table, but some fields are unused. This makes the code easier to read and also
paves the way to share clock data between Tegra SoCs.

Signed-off-by: Peter De Schrijver <pdeschrijver@xxxxxxxxxx>
---
 drivers/clk/tegra/clk-tegra114.c |  265 ++++++++++++++------------------------
 drivers/clk/tegra/clk.h          |    6 +
 2 files changed, 103 insertions(+), 168 deletions(-)

diff --git a/drivers/clk/tegra/clk-tegra114.c b/drivers/clk/tegra/clk-tegra114.c
index 451d0e2..9100e62 100644
--- a/drivers/clk/tegra/clk-tegra114.c
+++ b/drivers/clk/tegra/clk-tegra114.c
@@ -1892,160 +1892,79 @@ static struct tegra_periph_init_data tegra_periph_nodiv_clk_list[] = {
 	TEGRA_INIT_DATA_NODIV("disp2", NULL, "tegradc.1", mux_pllp_pllm_plld_plla_pllc_plld2_clkm, CLK_SOURCE_DISP2, 29, 7, 26, 0, TEGRA114_CLK_DISP2),
 };
 
-static __init void tegra114_periph_clk_init(void __iomem *clk_base)
-{
-	struct tegra_periph_init_data *data;
-	struct clk *clk;
-	int i;
-	u32 val;
+static const char *clk_32k[] = {
+	"clk_32k",
+};
 
-	/* apbdma */
-	clk = tegra_clk_register_periph_gate("apbdma", "clk_m", 0, clk_base,
-				  0, 34, &periph_regs[h],
-				  periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_APBDMA] = clk;
-
-	/* rtc */
-	clk = tegra_clk_register_periph_gate("rtc", "clk_32k",
-				    TEGRA_PERIPH_ON_APB |
-				    TEGRA_PERIPH_NO_RESET, clk_base,
-				    0, 4, &periph_regs[l],
-				    periph_clk_enb_refcnt);
-	clk_register_clkdev(clk, NULL, "rtc-tegra");
-	clks[TEGRA114_CLK_RTC] = clk;
-
-	/* kbc */
-	clk = tegra_clk_register_periph_gate("kbc", "clk_32k",
-				    TEGRA_PERIPH_ON_APB |
-				    TEGRA_PERIPH_NO_RESET, clk_base,
-				    0, 36, &periph_regs[h],
-				    periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_KBC] = clk;
-
-	/* timer */
-	clk = tegra_clk_register_periph_gate("timer", "clk_m", 0, clk_base,
-				  0, 5, &periph_regs[l],
-				  periph_clk_enb_refcnt);
-	clk_register_clkdev(clk, NULL, "timer");
-	clks[TEGRA114_CLK_TIMER] = clk;
-
-	/* kfuse */
-	clk = tegra_clk_register_periph_gate("kfuse", "clk_m",
-				  TEGRA_PERIPH_ON_APB, clk_base,  0, 40,
-				  &periph_regs[h], periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_KFUSE] = clk;
-
-	/* fuse */
-	clk = tegra_clk_register_periph_gate("fuse", "clk_m",
-				  TEGRA_PERIPH_ON_APB, clk_base,  0, 39,
-				  &periph_regs[h], periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_FUSE] = clk;
-
-	/* fuse_burn */
-	clk = tegra_clk_register_periph_gate("fuse_burn", "clk_m",
-				  TEGRA_PERIPH_ON_APB, clk_base,  0, 39,
-				  &periph_regs[h], periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_FUSE_BURN] = clk;
-
-	/* apbif */
-	clk = tegra_clk_register_periph_gate("apbif", "clk_m",
-				  TEGRA_PERIPH_ON_APB, clk_base,  0, 107,
-				  &periph_regs[v], periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_APBIF] = clk;
-
-	/* hda2hdmi */
-	clk = tegra_clk_register_periph_gate("hda2hdmi", "clk_m",
-				    TEGRA_PERIPH_ON_APB, clk_base,  0, 128,
-				    &periph_regs[w], periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_HDA2HDMI] = clk;
-
-	/* vcp */
-	clk = tegra_clk_register_periph_gate("vcp", "clk_m", 0, clk_base,  0,
-				  29, &periph_regs[l],
-				  periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_VCP] = clk;
+static const char *clk_m[] = {
+	"clk_m",
+};
 
-	/* bsea */
-	clk = tegra_clk_register_periph_gate("bsea", "clk_m", 0, clk_base,
-				  0, 62, &periph_regs[h],
-				  periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_BSEA] = clk;
+static const char *pll_p_out3[] = {
+	"pll_p_out3",
+};
 
-	/* bsev */
-	clk = tegra_clk_register_periph_gate("bsev", "clk_m", 0, clk_base,
-				  0, 63, &periph_regs[h],
-				  periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_BSEV] = clk;
+static const char *xusb_host_src[] = {
+	"xusb_host_src",
+};
 
-	/* mipi-cal */
-	clk = tegra_clk_register_periph_gate("mipi-cal", "clk_m", 0, clk_base,
-				   0, 56, &periph_regs[h],
-				  periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_MIPI_CAL] = clk;
+static const char *xusb_ss_src[] = {
+	"xusb_ss_src",
+};
 
-	/* usbd */
-	clk = tegra_clk_register_periph_gate("usbd", "clk_m", 0, clk_base,
-				  0, 22, &periph_regs[l],
-				  periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_USBD] = clk;
+static const char *xusb_dev_src[] = {
+	"xusb_dev_src",
+};
 
-	/* usb2 */
-	clk = tegra_clk_register_periph_gate("usb2", "clk_m", 0, clk_base,
-				  0, 58, &periph_regs[h],
-				  periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_USB2] = clk;
+static const char *dsia_mux[] = {
+	"dsia_mux",
+};
 
-	/* usb3 */
-	clk = tegra_clk_register_periph_gate("usb3", "clk_m", 0, clk_base,
-				  0, 59, &periph_regs[h],
-				  periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_USB3] = clk;
+static const char *dsib_mux[] = {
+	"dsib_mux",
+};
 
-	/* csi */
-	clk = tegra_clk_register_periph_gate("csi", "pll_p_out3", 0, clk_base,
-				   0, 52, &periph_regs[h],
-				  periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_CSI] = clk;
+static const char *emc_mux[] = {
+	"emc_mux",
+};
 
-	/* isp */
-	clk = tegra_clk_register_periph_gate("isp", "clk_m", 0, clk_base, 0,
-				  23, &periph_regs[l],
-				  periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_ISP] = clk;
-
-	/* csus */
-	clk = tegra_clk_register_periph_gate("csus", "clk_m",
-				  TEGRA_PERIPH_NO_RESET, clk_base, 0, 92,
-				  &periph_regs[u], periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_CSUS] = clk;
-
-	/* dds */
-	clk = tegra_clk_register_periph_gate("dds", "clk_m",
-				  TEGRA_PERIPH_ON_APB, clk_base, 0, 150,
-				  &periph_regs[w], periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_DDS] = clk;
-
-	/* dp2 */
-	clk = tegra_clk_register_periph_gate("dp2", "clk_m",
-				  TEGRA_PERIPH_ON_APB, clk_base, 0, 152,
-				  &periph_regs[w], periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_DP2] = clk;
-
-	/* dtv */
-	clk = tegra_clk_register_periph_gate("dtv", "clk_m",
-				    TEGRA_PERIPH_ON_APB, clk_base, 0, 79,
-				    &periph_regs[u], periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_DTV] = clk;
-
-	/* dsia */
-	clk = clk_register_mux(NULL, "dsia_mux", mux_plld_out0_plld2_out0,
-			       ARRAY_SIZE(mux_plld_out0_plld2_out0), 0,
-			       clk_base + PLLD_BASE, 25, 1, 0, &pll_d_lock);
-	clks[TEGRA114_CLK_DSIA_MUX] = clk;
-	clk = tegra_clk_register_periph_gate("dsia", "dsia_mux", 0, clk_base,
-				    0, 48, &periph_regs[h],
-				    periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_DSIA] = clk;
+static struct tegra_periph_init_data tegra_periph_gate_clk_list[] = {
+	TEGRA_INIT_DATA_GATE("rtc", NULL, "rtc-tegra", clk_32k, 4, TEGRA_PERIPH_ON_APB | TEGRA_PERIPH_NO_RESET, TEGRA114_CLK_RTC, 0),
+	TEGRA_INIT_DATA_GATE("timer", NULL, "timer", clk_m, 5, 0, TEGRA114_CLK_TIMER, 0),
+	TEGRA_INIT_DATA_GATE("vcp", NULL, NULL, clk_m, 29, 0, TEGRA114_CLK_HDA2HDMI, 0),
+	TEGRA_INIT_DATA_GATE("apbdma", NULL, NULL, clk_m, 34, 0, TEGRA114_CLK_APBDMA, 0),
+	TEGRA_INIT_DATA_GATE("kbc", NULL, NULL, clk_32k, 36, TEGRA_PERIPH_ON_APB | TEGRA_PERIPH_NO_RESET, TEGRA114_CLK_KBC, 0),
+	TEGRA_INIT_DATA_GATE("fuse", NULL, NULL, clk_m, 39, TEGRA_PERIPH_ON_APB, TEGRA114_CLK_FUSE, 0),
+	TEGRA_INIT_DATA_GATE("fuse_burn", NULL, NULL, clk_m, 39, TEGRA_PERIPH_ON_APB, TEGRA114_CLK_FUSE_BURN, 0),
+	TEGRA_INIT_DATA_GATE("kfuse", NULL, NULL, clk_m, 40, TEGRA_PERIPH_ON_APB, TEGRA114_CLK_KFUSE, 0),
+	TEGRA_INIT_DATA_GATE("apbif", NULL, NULL, clk_m, 107, TEGRA_PERIPH_ON_APB, TEGRA114_CLK_APBIF, 0),
+	TEGRA_INIT_DATA_GATE("hda2hdmi", NULL, NULL, clk_m, 128, TEGRA_PERIPH_ON_APB, TEGRA114_CLK_HDA2HDMI, 0),
+	TEGRA_INIT_DATA_GATE("bsea", NULL, NULL, clk_m, 62, 0, TEGRA114_CLK_HDA2HDMI, 0),
+	TEGRA_INIT_DATA_GATE("bsev", NULL, NULL, clk_m, 63, 0, TEGRA114_CLK_BSEV, 0),
+	TEGRA_INIT_DATA_GATE("mipi-cal", NULL, NULL, clk_m, 56, 0, TEGRA114_CLK_MIPI_CAL, 0),
+	TEGRA_INIT_DATA_GATE("usbd", NULL, NULL, clk_m, 22, 0, TEGRA114_CLK_USBD, 0),
+	TEGRA_INIT_DATA_GATE("usb2", NULL, NULL, clk_m, 58, 0, TEGRA114_CLK_USB2, 0),
+	TEGRA_INIT_DATA_GATE("usb3", NULL, NULL, clk_m, 59, 0, TEGRA114_CLK_USB3, 0),
+	TEGRA_INIT_DATA_GATE("csi", NULL, NULL, pll_p_out3, 52, 0, TEGRA114_CLK_CSI, 0),
+	TEGRA_INIT_DATA_GATE("isp", NULL, NULL, clk_m, 23, 0, TEGRA114_CLK_ISP, 0),
+	TEGRA_INIT_DATA_GATE("csus", NULL, NULL, clk_m, 92, TEGRA_PERIPH_NO_RESET, TEGRA114_CLK_CSUS, 0),
+	TEGRA_INIT_DATA_GATE("dds", NULL, NULL, clk_m, 150, TEGRA_PERIPH_ON_APB, TEGRA114_CLK_DDS, 0),
+	TEGRA_INIT_DATA_GATE("dp2", NULL, NULL, clk_m, 152, TEGRA_PERIPH_ON_APB, TEGRA114_CLK_DP2, 0),
+	TEGRA_INIT_DATA_GATE("dtv", NULL, NULL, clk_m, 79, TEGRA_PERIPH_ON_APB, TEGRA114_CLK_DTV, 0),
+	TEGRA_INIT_DATA_GATE("xusb_host", NULL, NULL, xusb_host_src, 89, 0, TEGRA114_CLK_XUSB_HOST, 0),
+	TEGRA_INIT_DATA_GATE("xusb_ss", NULL, NULL, xusb_ss_src, 156, 0, TEGRA114_CLK_XUSB_SS, 0),
+	TEGRA_INIT_DATA_GATE("xusb_dev", NULL, NULL, xusb_dev_src, 95, 0, TEGRA114_CLK_XUSB_DEV, 0),
+	TEGRA_INIT_DATA_GATE("dsia", NULL, NULL, dsia_mux, 48, 0, TEGRA114_CLK_DSIA, 0),
+	TEGRA_INIT_DATA_GATE("dsib", NULL, NULL, dsib_mux, 82, 0, TEGRA114_CLK_DSIB, 0),
+	TEGRA_INIT_DATA_GATE("emc", NULL, NULL, emc_mux, 57, 0, TEGRA114_CLK_EMC, CLK_IGNORE_UNUSED),
+};
+
+static __init void tegra114_periph_clk_init(void __iomem *clk_base)
+{
+	struct tegra_periph_init_data *data;
+	struct clk *clk;
+	int i;
+	u32 val;
 
 	/* xusb_hs_src */
 	val = readl(clk_base + CLK_SOURCE_XUSB_SS_SRC);
@@ -2056,33 +1975,23 @@ static __init void tegra114_periph_clk_init(void __iomem *clk_base)
 					1, 1);
 	clks[TEGRA114_CLK_XUSB_HS_SRC] = clk;
 
-	/* xusb_host */
-	clk = tegra_clk_register_periph_gate("xusb_host", "xusb_host_src", 0,
-				    clk_base, 0, 89, &periph_regs[u],
-				    periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_XUSB_HOST] = clk;
-
-	/* xusb_ss */
-	clk = tegra_clk_register_periph_gate("xusb_ss", "xusb_ss_src", 0,
-				    clk_base, 0, 156, &periph_regs[w],
-				    periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_XUSB_HOST] = clk;
-
-	/* xusb_dev */
-	clk = tegra_clk_register_periph_gate("xusb_dev", "xusb_dev_src", 0,
-				    clk_base, 0, 95, &periph_regs[u],
-				    periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_XUSB_DEV] = clk;
-
-	/* emc */
+	/* dsia mux */
+	clk = clk_register_mux(NULL, "dsia_mux", mux_plld_out0_plld2_out0,
+			       ARRAY_SIZE(mux_plld_out0_plld2_out0), 0,
+			       clk_base + PLLD_BASE, 25, 1, 0, &pll_d_lock);
+	clks[TEGRA114_CLK_DSIA_MUX] = clk;
+
+	/* dsib mux */
+	clk = clk_register_mux(NULL, "dsib_mux", mux_plld_out0_plld2_out0,
+			       ARRAY_SIZE(mux_plld_out0_plld2_out0), 0,
+			       clk_base + PLLD2_BASE, 25, 1, 0, &pll_d2_lock);
+	clks[TEGRA114_CLK_DSIB_MUX] = clk;
+
+	/* emc mux */
 	clk = clk_register_mux(NULL, "emc_mux", mux_pllmcp_clkm,
 			       ARRAY_SIZE(mux_pllmcp_clkm), 0,
 			       clk_base + CLK_SOURCE_EMC,
 			       29, 3, 0, NULL);
-	clk = tegra_clk_register_periph_gate("emc", "emc_mux", 0, clk_base,
-				CLK_IGNORE_UNUSED, 57, &periph_regs[h],
-				periph_clk_enb_refcnt);
-	clks[TEGRA114_CLK_EMC] = clk;
 
 	for (i = 0; i < ARRAY_SIZE(tegra_periph_clk_list); i++) {
 		int reg_bank;
@@ -2114,6 +2023,26 @@ static __init void tegra114_periph_clk_init(void __iomem *clk_base)
 			clks[data->clk_id] = clk;
 		}
 	}
+
+	for (i = 0; i < ARRAY_SIZE(tegra_periph_gate_clk_list); i++) {
+		int reg_bank;
+
+		data = &tegra_periph_gate_clk_list[i];
+		reg_bank = get_reg_bank(data->periph.gate.clk_num);
+
+		if (reg_bank >= 0) {
+			clk = tegra_clk_register_periph_gate(data->name,
+					data->parent_names[0],
+					data->periph.gate.flags, clk_base,
+					data->flags, data->periph.gate.clk_num,
+					&periph_regs[reg_bank],
+					periph_clk_enb_refcnt);
+			clks[data->clk_id] = clk;
+			if (data->con_id || data->dev_id)
+				clk_register_clkdev(clk, data->con_id,
+						data->dev_id);
+		}
+	}
 }
 
 /* Tegra114 CPU clock and reset control functions */
diff --git a/drivers/clk/tegra/clk.h b/drivers/clk/tegra/clk.h
index 07cfacd..3a8e168 100644
--- a/drivers/clk/tegra/clk.h
+++ b/drivers/clk/tegra/clk.h
@@ -513,6 +513,12 @@ struct tegra_periph_init_data {
 			_regs, _clk_num, _enb_refcnt, _gate_flags, _clk_id,\
 			NULL, 0)
 
+#define TEGRA_INIT_DATA_GATE(_name, _con_id, _dev_id, _parent_names,	\
+			     _clk_num, _gate_flags,  _clk_id, _flags)	\
+	TEGRA_INIT_DATA_TABLE(_name, _con_id, _dev_id, _parent_names, 0,\
+			      0, 0, 0, 0, 0, 0, 0, 0, _clk_num,	\
+			      NULL, _gate_flags, _clk_id, NULL, _flags)
+
 /**
  * struct clk_super_mux - super clock
  *
-- 
1.7.7.rc0.72.g4b5ea.dirty

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