Release 4.14 drivers/clk/clk-oxnas.c
/*
* Copyright (C) 2010 Broadcom
* Copyright (C) 2012 Stephen Warren
* Copyright (C) 2016 Neil Armstrong <narmstrong@baylibre.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Neil Armstrong | 25 | 100.00% | 2 | 100.00% |
| Total | 25 | 100.00% | 2 | 100.00% |
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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Neil Armstrong | 61 | 100.00% | 2 | 100.00% |
| Total | 61 | 100.00% | 2 | 100.00% |
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Neil Armstrong | 40 | 100.00% | 2 | 100.00% |
| Total | 40 | 100.00% | 2 | 100.00% |
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));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Neil Armstrong | 37 | 100.00% | 2 | 100.00% |
| Total | 37 | 100.00% | 2 | 100.00% |
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;
const struct oxnas_stdclk_data *data;
const struct of_device_id *id;
struct regmap *regmap;
int ret;
int i;
id = of_match_device(oxnas_stdclk_dt_ids, &pdev->dev);
if (!id)
return -ENODEV;
data = id->data;
regmap = syscon_node_to_regmap(of_get_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);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Neil Armstrong | 196 | 96.55% | 2 | 66.67% |
| Wei Yongjun | 7 | 3.45% | 1 | 33.33% |
| Total | 203 | 100.00% | 3 | 100.00% |
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);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Neil Armstrong | 1191 | 98.84% | 4 | 66.67% |
| Paul Gortmaker | 7 | 0.58% | 1 | 16.67% |
| Wei Yongjun | 7 | 0.58% | 1 | 16.67% |
| Total | 1205 | 100.00% | 6 | 100.00% |
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