[PATCH RFC 05/20] clk: oxnas: remove obsolete clock driver
From: Neil Armstrong
Date: Fri Mar 31 2023 - 04:35:24 EST
Due to lack of maintainance and stall of development for a few years now,
and since no new features will ever be added upstream, remove support
for OX810 and OX820 clock driver.
Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
---
drivers/clk/Kconfig | 7 --
drivers/clk/Makefile | 1 -
drivers/clk/clk-oxnas.c | 251 ------------------------------------------------
3 files changed, 259 deletions(-)
diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index b6c5bf69a2b2..7ac31d00f03a 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -351,13 +351,6 @@ config COMMON_CLK_PXA
help
Support for the Marvell PXA SoC.
-config COMMON_CLK_OXNAS
- bool "Clock driver for the OXNAS SoC Family"
- depends on ARCH_OXNAS || COMPILE_TEST
- select MFD_SYSCON
- help
- Support for the OXNAS SoC Family clocks.
-
config COMMON_CLK_RS9_PCIE
tristate "Clock driver for Renesas 9-series PCIe clock generators"
depends on I2C
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index e3ca0d058a25..fea32d60f1d9 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -50,7 +50,6 @@ obj-$(CONFIG_ARCH_MOXART) += clk-moxart.o
obj-$(CONFIG_ARCH_NOMADIK) += clk-nomadik.o
obj-$(CONFIG_ARCH_NPCM7XX) += clk-npcm7xx.o
obj-$(CONFIG_ARCH_NSPIRE) += clk-nspire.o
-obj-$(CONFIG_COMMON_CLK_OXNAS) += clk-oxnas.o
obj-$(CONFIG_COMMON_CLK_PALMAS) += clk-palmas.o
obj-$(CONFIG_CLK_LS1028A_PLLDIG) += clk-plldig.o
obj-$(CONFIG_COMMON_CLK_PWM) += clk-pwm.o
diff --git a/drivers/clk/clk-oxnas.c b/drivers/clk/clk-oxnas.c
deleted file mode 100644
index 584e293156ad..000000000000
--- a/drivers/clk/clk-oxnas.c
+++ /dev/null
@@ -1,251 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2010 Broadcom
- * Copyright (C) 2012 Stephen Warren
- * Copyright (C) 2016 Neil Armstrong <narmstrong@xxxxxxxxxxxx>
- */
-
-#include <linux/clk-provider.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/platform_device.h>
-#include <linux/stringify.h>
-#include <linux/regmap.h>
-#include <linux/mfd/syscon.h>
-
-#include <dt-bindings/clock/oxsemi,ox810se.h>
-#include <dt-bindings/clock/oxsemi,ox820.h>
-
-/* Standard regmap gate clocks */
-struct clk_oxnas_gate {
- struct clk_hw hw;
- unsigned int bit;
- struct regmap *regmap;
-};
-
-struct oxnas_stdclk_data {
- struct clk_hw_onecell_data *onecell_data;
- struct clk_oxnas_gate **gates;
- unsigned int ngates;
- struct clk_oxnas_pll **plls;
- unsigned int nplls;
-};
-
-/* Regmap offsets */
-#define CLK_STAT_REGOFFSET 0x24
-#define CLK_SET_REGOFFSET 0x2c
-#define CLK_CLR_REGOFFSET 0x30
-
-static inline struct clk_oxnas_gate *to_clk_oxnas_gate(struct clk_hw *hw)
-{
- return container_of(hw, struct clk_oxnas_gate, hw);
-}
-
-static int oxnas_clk_gate_is_enabled(struct clk_hw *hw)
-{
- struct clk_oxnas_gate *std = to_clk_oxnas_gate(hw);
- int ret;
- unsigned int val;
-
- ret = regmap_read(std->regmap, CLK_STAT_REGOFFSET, &val);
- if (ret < 0)
- return ret;
-
- return val & BIT(std->bit);
-}
-
-static int oxnas_clk_gate_enable(struct clk_hw *hw)
-{
- struct clk_oxnas_gate *std = to_clk_oxnas_gate(hw);
-
- regmap_write(std->regmap, CLK_SET_REGOFFSET, BIT(std->bit));
-
- return 0;
-}
-
-static void oxnas_clk_gate_disable(struct clk_hw *hw)
-{
- struct clk_oxnas_gate *std = to_clk_oxnas_gate(hw);
-
- regmap_write(std->regmap, CLK_CLR_REGOFFSET, BIT(std->bit));
-}
-
-static const struct clk_ops oxnas_clk_gate_ops = {
- .enable = oxnas_clk_gate_enable,
- .disable = oxnas_clk_gate_disable,
- .is_enabled = oxnas_clk_gate_is_enabled,
-};
-
-static const char *const osc_parents[] = {
- "oscillator",
-};
-
-static const char *const eth_parents[] = {
- "gmacclk",
-};
-
-#define OXNAS_GATE(_name, _bit, _parents) \
-struct clk_oxnas_gate _name = { \
- .bit = (_bit), \
- .hw.init = &(struct clk_init_data) { \
- .name = #_name, \
- .ops = &oxnas_clk_gate_ops, \
- .parent_names = _parents, \
- .num_parents = ARRAY_SIZE(_parents), \
- .flags = (CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED), \
- }, \
-}
-
-static OXNAS_GATE(ox810se_leon, 0, osc_parents);
-static OXNAS_GATE(ox810se_dma_sgdma, 1, osc_parents);
-static OXNAS_GATE(ox810se_cipher, 2, osc_parents);
-static OXNAS_GATE(ox810se_sata, 4, osc_parents);
-static OXNAS_GATE(ox810se_audio, 5, osc_parents);
-static OXNAS_GATE(ox810se_usbmph, 6, osc_parents);
-static OXNAS_GATE(ox810se_etha, 7, eth_parents);
-static OXNAS_GATE(ox810se_pciea, 8, osc_parents);
-static OXNAS_GATE(ox810se_nand, 9, osc_parents);
-
-static struct clk_oxnas_gate *ox810se_gates[] = {
- &ox810se_leon,
- &ox810se_dma_sgdma,
- &ox810se_cipher,
- &ox810se_sata,
- &ox810se_audio,
- &ox810se_usbmph,
- &ox810se_etha,
- &ox810se_pciea,
- &ox810se_nand,
-};
-
-static OXNAS_GATE(ox820_leon, 0, osc_parents);
-static OXNAS_GATE(ox820_dma_sgdma, 1, osc_parents);
-static OXNAS_GATE(ox820_cipher, 2, osc_parents);
-static OXNAS_GATE(ox820_sd, 3, osc_parents);
-static OXNAS_GATE(ox820_sata, 4, osc_parents);
-static OXNAS_GATE(ox820_audio, 5, osc_parents);
-static OXNAS_GATE(ox820_usbmph, 6, osc_parents);
-static OXNAS_GATE(ox820_etha, 7, eth_parents);
-static OXNAS_GATE(ox820_pciea, 8, osc_parents);
-static OXNAS_GATE(ox820_nand, 9, osc_parents);
-static OXNAS_GATE(ox820_ethb, 10, eth_parents);
-static OXNAS_GATE(ox820_pcieb, 11, osc_parents);
-static OXNAS_GATE(ox820_ref600, 12, osc_parents);
-static OXNAS_GATE(ox820_usbdev, 13, osc_parents);
-
-static struct clk_oxnas_gate *ox820_gates[] = {
- &ox820_leon,
- &ox820_dma_sgdma,
- &ox820_cipher,
- &ox820_sd,
- &ox820_sata,
- &ox820_audio,
- &ox820_usbmph,
- &ox820_etha,
- &ox820_pciea,
- &ox820_nand,
- &ox820_etha,
- &ox820_pciea,
- &ox820_ref600,
- &ox820_usbdev,
-};
-
-static struct clk_hw_onecell_data ox810se_hw_onecell_data = {
- .hws = {
- [CLK_810_LEON] = &ox810se_leon.hw,
- [CLK_810_DMA_SGDMA] = &ox810se_dma_sgdma.hw,
- [CLK_810_CIPHER] = &ox810se_cipher.hw,
- [CLK_810_SATA] = &ox810se_sata.hw,
- [CLK_810_AUDIO] = &ox810se_audio.hw,
- [CLK_810_USBMPH] = &ox810se_usbmph.hw,
- [CLK_810_ETHA] = &ox810se_etha.hw,
- [CLK_810_PCIEA] = &ox810se_pciea.hw,
- [CLK_810_NAND] = &ox810se_nand.hw,
- },
- .num = ARRAY_SIZE(ox810se_gates),
-};
-
-static struct clk_hw_onecell_data ox820_hw_onecell_data = {
- .hws = {
- [CLK_820_LEON] = &ox820_leon.hw,
- [CLK_820_DMA_SGDMA] = &ox820_dma_sgdma.hw,
- [CLK_820_CIPHER] = &ox820_cipher.hw,
- [CLK_820_SD] = &ox820_sd.hw,
- [CLK_820_SATA] = &ox820_sata.hw,
- [CLK_820_AUDIO] = &ox820_audio.hw,
- [CLK_820_USBMPH] = &ox820_usbmph.hw,
- [CLK_820_ETHA] = &ox820_etha.hw,
- [CLK_820_PCIEA] = &ox820_pciea.hw,
- [CLK_820_NAND] = &ox820_nand.hw,
- [CLK_820_ETHB] = &ox820_ethb.hw,
- [CLK_820_PCIEB] = &ox820_pcieb.hw,
- [CLK_820_REF600] = &ox820_ref600.hw,
- [CLK_820_USBDEV] = &ox820_usbdev.hw,
- },
- .num = ARRAY_SIZE(ox820_gates),
-};
-
-static struct oxnas_stdclk_data ox810se_stdclk_data = {
- .onecell_data = &ox810se_hw_onecell_data,
- .gates = ox810se_gates,
- .ngates = ARRAY_SIZE(ox810se_gates),
-};
-
-static struct oxnas_stdclk_data ox820_stdclk_data = {
- .onecell_data = &ox820_hw_onecell_data,
- .gates = ox820_gates,
- .ngates = ARRAY_SIZE(ox820_gates),
-};
-
-static const struct of_device_id oxnas_stdclk_dt_ids[] = {
- { .compatible = "oxsemi,ox810se-stdclk", &ox810se_stdclk_data },
- { .compatible = "oxsemi,ox820-stdclk", &ox820_stdclk_data },
- { }
-};
-
-static int oxnas_stdclk_probe(struct platform_device *pdev)
-{
- struct device_node *np = pdev->dev.of_node, *parent_np;
- const struct oxnas_stdclk_data *data;
- struct regmap *regmap;
- int ret;
- int i;
-
- data = of_device_get_match_data(&pdev->dev);
-
- parent_np = of_get_parent(np);
- regmap = syscon_node_to_regmap(parent_np);
- of_node_put(parent_np);
- if (IS_ERR(regmap)) {
- dev_err(&pdev->dev, "failed to have parent regmap\n");
- return PTR_ERR(regmap);
- }
-
- for (i = 0 ; i < data->ngates ; ++i)
- data->gates[i]->regmap = regmap;
-
- for (i = 0; i < data->onecell_data->num; i++) {
- if (!data->onecell_data->hws[i])
- continue;
-
- ret = devm_clk_hw_register(&pdev->dev,
- data->onecell_data->hws[i]);
- if (ret)
- return ret;
- }
-
- return of_clk_add_hw_provider(np, of_clk_hw_onecell_get,
- data->onecell_data);
-}
-
-static struct platform_driver oxnas_stdclk_driver = {
- .probe = oxnas_stdclk_probe,
- .driver = {
- .name = "oxnas-stdclk",
- .suppress_bind_attrs = true,
- .of_match_table = oxnas_stdclk_dt_ids,
- },
-};
-builtin_platform_driver(oxnas_stdclk_driver);
--
2.34.1