/*
* Hi3798CV200 Clock and Reset Generator Driver
*
* Copyright (c) 2016 HiSilicon Technologies Co., Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that 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 <dt-bindings/clock/histb-clock.h>
#include <linux/clk-provider.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include "clk.h"
#include "crg.h"
#include "reset.h"
/* hi3798CV200 core CRG */
#define HI3798CV200_INNER_CLK_OFFSET 64
#define HI3798CV200_FIXED_24M 65
#define HI3798CV200_FIXED_25M 66
#define HI3798CV200_FIXED_50M 67
#define HI3798CV200_FIXED_75M 68
#define HI3798CV200_FIXED_100M 69
#define HI3798CV200_FIXED_150M 70
#define HI3798CV200_FIXED_200M 71
#define HI3798CV200_FIXED_250M 72
#define HI3798CV200_FIXED_300M 73
#define HI3798CV200_FIXED_400M 74
#define HI3798CV200_MMC_MUX 75
#define HI3798CV200_ETH_PUB_CLK 76
#define HI3798CV200_ETH_BUS_CLK 77
#define HI3798CV200_ETH_BUS0_CLK 78
#define HI3798CV200_ETH_BUS1_CLK 79
#define HI3798CV200_COMBPHY1_MUX 80
#define HI3798CV200_CRG_NR_CLKS 128
static const struct hisi_fixed_rate_clock hi3798cv200_fixed_rate_clks[] = {
{ HISTB_OSC_CLK, "clk_osc", NULL, 0, 24000000, },
{ HISTB_APB_CLK, "clk_apb", NULL, 0, 100000000, },
{ HISTB_AHB_CLK, "clk_ahb", NULL, 0, 200000000, },
{ HI3798CV200_FIXED_24M, "24m", NULL, 0, 24000000, },
{ HI3798CV200_FIXED_25M, "25m", NULL, 0, 25000000, },
{ HI3798CV200_FIXED_50M, "50m", NULL, 0, 50000000, },
{ HI3798CV200_FIXED_75M, "75m", NULL, 0, 75000000, },
{ HI3798CV200_FIXED_100M, "100m", NULL, 0, 100000000, },
{ HI3798CV200_FIXED_150M, "150m", NULL, 0, 150000000, },
{ HI3798CV200_FIXED_200M, "200m", NULL, 0, 200000000, },
{ HI3798CV200_FIXED_250M, "250m", NULL, 0, 250000000, },
};
static const char *const mmc_mux_p[] = {
"100m", "50m", "25m", "200m", "150m" };
static u32 mmc_mux_table[] = {0, 1, 2, 3, 6};
static const char *const comphy1_mux_p[] = {
"100m", "25m"};
static u32 comphy1_mux_table[] = {2, 3};
static struct hisi_mux_clock hi3798cv200_mux_clks[] = {
{ HI3798CV200_MMC_MUX, "mmc_mux", mmc_mux_p, ARRAY_SIZE(mmc_mux_p),
CLK_SET_RATE_PARENT, 0xa0, 8, 3, 0, mmc_mux_table, },
{ HI3798CV200_COMBPHY1_MUX, "combphy1_mux",
comphy1_mux_p, ARRAY_SIZE(comphy1_mux_p),
CLK_SET_RATE_PARENT, 0x188, 10, 2, 0, comphy1_mux_table, },
};
static const struct hisi_gate_clock hi3798cv200_gate_clks[] = {
/* UART */
{ HISTB_UART2_CLK, "clk_uart2", "75m",
CLK_SET_RATE_PARENT, 0x68, 4, 0, },
/* I2C */
{ HISTB_I2C0_CLK, "clk_i2c0", "clk_apb",
CLK_SET_RATE_PARENT, 0x6C, 4, 0, },
{ HISTB_I2C1_CLK, "clk_i2c1", "clk_apb",
CLK_SET_RATE_PARENT, 0x6C, 8, 0, },
{ HISTB_I2C2_CLK, "clk_i2c2", "clk_apb",
CLK_SET_RATE_PARENT, 0x6C, 12, 0, },
{ HISTB_I2C3_CLK, "clk_i2c3", "clk_apb",
CLK_SET_RATE_PARENT, 0x6C, 16, 0, },
{ HISTB_I2C4_CLK, "clk_i2c4", "clk_apb",
CLK_SET_RATE_PARENT, 0x6C, 20, 0, },
/* SPI */
{ HISTB_SPI0_CLK, "clk_spi0", "clk_apb",
CLK_SET_RATE_PARENT, 0x70, 0, 0, },
/* SDIO */
{ HISTB_SDIO0_BIU_CLK, "clk_sdio0_biu", "200m",
CLK_SET_RATE_PARENT, 0x9c, 0, 0, },
{ HISTB_SDIO0_CIU_CLK, "clk_sdio0_ciu", "mmc_mux",
CLK_SET_RATE_PARENT, 0x9c, 1, 0, },
/* EMMC */
{ HISTB_MMC_BIU_CLK, "clk_mmc_biu", "200m",
CLK_SET_RATE_PARENT, 0xa0, 0, 0, },
{ HISTB_MMC_CIU_CLK, "clk_mmc_ciu", "mmc_mux",
CLK_SET_RATE_PARENT, 0xa0, 1, 0, },
/* PCIE*/
{ HISTB_PCIE_BUS_CLK, "clk_pcie_bus", "200m",
CLK_SET_RATE_PARENT, 0x18c, 0, 0, },
{ HISTB_PCIE_SYS_CLK, "clk_pcie_sys", "100m",
CLK_SET_RATE_PARENT, 0x18c, 1, 0, },
{ HISTB_PCIE_PIPE_CLK, "clk_pcie_pipe", "250m",
CLK_SET_RATE_PARENT, 0x18c, 2, 0, },
{ HISTB_PCIE_AUX_CLK, "clk_pcie_aux", "24m",
CLK_SET_RATE_PARENT, 0x18c, 3, 0, },
/* Ethernet */
{ HI3798CV200_ETH_PUB_CLK, "clk_pub", NULL,
CLK_SET_RATE_PARENT, 0xcc, 5, 0, },
{ HI3798CV200_ETH_BUS_CLK, "clk_bus", "clk_pub",
CLK_SET_RATE_PARENT, 0xcc, 0, 0, },
{ HI3798CV200_ETH_BUS0_CLK, "clk_bus_m0", "clk_bus",
CLK_SET_RATE_PARENT, 0xcc, 1, 0, },
{ HI3798CV200_ETH_BUS1_CLK, "clk_bus_m1", "clk_bus",
CLK_SET_RATE_PARENT, 0xcc, 2, 0, },
{ HISTB_ETH0_MAC_CLK, "clk_mac0", "clk_bus_m0",
CLK_SET_RATE_PARENT, 0xcc, 3, 0, },
{ HISTB_ETH0_MACIF_CLK, "clk_macif0", "clk_bus_m0",
CLK_SET_RATE_PARENT, 0xcc, 24, 0, },
{ HISTB_ETH1_MAC_CLK, "clk_mac1", "clk_bus_m1",
CLK_SET_RATE_PARENT, 0xcc, 4, 0, },
{ HISTB_ETH1_MACIF_CLK, "clk_macif1", "clk_bus_m1",
CLK_SET_RATE_PARENT, 0xcc, 25, 0, },
/* COMBPHY1 */
{ HISTB_COMBPHY1_CLK, "clk_combphy1", "combphy1_mux",
CLK_SET_RATE_PARENT, 0x188, 8, 0, },
};
static struct hisi_clock_data *hi3798cv200_clk_register(
struct platform_device *pdev)
{
struct hisi_clock_data *clk_data;
int ret;
clk_data = hisi_clk_alloc(pdev, HI3798CV200_CRG_NR_CLKS);
if (!clk_data)
return ERR_PTR(-ENOMEM);
ret = hisi_clk_register_fixed_rate(hi3798cv200_fixed_rate_clks,
ARRAY_SIZE(hi3798cv200_fixed_rate_clks),
clk_data);
if (ret)
return ERR_PTR(ret);
ret = hisi_clk_register_mux(hi3798cv200_mux_clks,
ARRAY_SIZE(hi3798cv200_mux_clks),
clk_data);
if (ret)
goto unregister_fixed_rate;
ret = hisi_clk_register_gate(hi3798cv200_gate_clks,
ARRAY_SIZE(hi3798cv200_gate_clks),
clk_data);
if (ret)
goto unregister_mux;
ret = of_clk_add_provider(pdev->dev.of_node,
of_clk_src_onecell_get, &clk_data->clk_data);
if (ret)
goto unregister_gate;
return clk_data;
unregister_fixed_rate:
hisi_clk_unregister_fixed_rate(hi3798cv200_fixed_rate_clks,
ARRAY_SIZE(hi3798cv200_fixed_rate_clks),
clk_data);
unregister_mux:
hisi_clk_unregister_mux(hi3798cv200_mux_clks,
ARRAY_SIZE(hi3798cv200_mux_clks),
clk_data);
unregister_gate:
hisi_clk_unregister_gate(hi3798cv200_gate_clks,
ARRAY_SIZE(hi3798cv200_gate_clks),
clk_data);
return ERR_PTR(ret);
}
static void hi3798cv200_clk_unregister(struct platform_device *pdev)
{
struct hisi_crg_dev *crg = platform_get_drvdata(pdev);
of_clk_del_provider(pdev->dev.of_node);
hisi_clk_unregister_gate(hi3798cv200_gate_clks,
ARRAY_SIZE(hi3798cv200_gate_clks),
crg->clk_data);
hisi_clk_unregister_mux(hi3798cv200_mux_clks,
ARRAY_SIZE(hi3798cv200_mux_clks),
crg->clk_data);
hisi_clk_unregister_fixed_rate(hi3798cv200_fixed_rate_clks,
ARRAY_SIZE(hi3798cv200_fixed_rate_clks),
crg->clk_data);
}
static const struct hisi_crg_funcs hi3798cv200_crg_funcs = {
.register_clks = hi3798cv200_clk_register,
.unregister_clks = hi3798cv200_clk_unregister,
};
/* hi3798CV200 sysctrl CRG */
#define HI3798CV200_SYSCTRL_NR_CLKS 16
static const struct hisi_gate_clock hi3798cv200_sysctrl_gate_clks[] = {
{ HISTB_IR_CLK, "clk_ir", "100m",
CLK_SET_RATE_PARENT, 0x48, 4, 0, },
{ HISTB_TIMER01_CLK, "clk_timer01", "24m",
CLK_SET_RATE_PARENT, 0x48, 6, 0, },
{ HISTB_UART0_CLK, "clk_uart0", "75m",
CLK_SET_RATE_PARENT, 0x48, 10, 0, },
};
static struct hisi_clock_data *hi3798cv200_sysctrl_clk_register(
struct platform_device *pdev)
{
struct hisi_clock_data *clk_data;
int ret;
clk_data = hisi_clk_alloc(pdev, HI3798CV200_SYSCTRL_NR_CLKS);
if (!clk_data)
return ERR_PTR(-ENOMEM);
ret = hisi_clk_register_gate(hi3798cv200_sysctrl_gate_clks,
ARRAY_SIZE(hi3798cv200_sysctrl_gate_clks),
clk_data);
if (ret)
return ERR_PTR(ret);
ret = of_clk_add_provider(pdev->dev.of_node,
of_clk_src_onecell_get, &clk_data->clk_data);
if (ret)
goto unregister_gate;
return clk_data;
unregister_gate:
hisi_clk_unregister_gate(hi3798cv200_sysctrl_gate_clks,
ARRAY_SIZE(hi3798cv200_sysctrl_gate_clks),
clk_data);
return ERR_PTR(ret);
}
static void hi3798cv200_sysctrl_clk_unregister(struct platform_device *pdev)
{
struct hisi_crg_dev *crg = platform_get_drvdata(pdev);
of_clk_del_provider(pdev->dev.of_node);
hisi_clk_unregister_gate(hi3798cv200_sysctrl_gate_clks,
ARRAY_SIZE(hi3798cv200_sysctrl_gate_clks),
crg->clk_data);
}
static const struct hisi_crg_funcs hi3798cv200_sysctrl_funcs = {
.register_clks = hi3798cv200_sysctrl_clk_register,
.unregister_clks = hi3798cv200_sysctrl_clk_unregister,
};
static const struct of_device_id hi3798cv200_crg_match_table[] = {
{ .compatible = "hisilicon,hi3798cv200-crg",
.data = &hi3798cv200_crg_funcs },
{ .compatible = "hisilicon,hi3798cv200-sysctrl",
.data = &hi3798cv200_sysctrl_funcs },
{ }
};
MODULE_DEVICE_TABLE(of, hi3798cv200_crg_match_table);
static int hi3798cv200_crg_probe(struct platform_device *pdev)
{
struct hisi_crg_dev *crg;
crg = devm_kmalloc(&pdev->dev, sizeof(*crg), GFP_KERNEL);
if (!crg)
return -ENOMEM;
crg->funcs = of_device_get_match_data(&pdev->dev);
if (!crg->funcs)
return -ENOENT;
crg->rstc = hisi_reset_init(pdev);
if (!crg->rstc)
return -ENOMEM;
crg->clk_data = crg->funcs->register_clks(pdev);
if (IS_ERR(crg->clk_data)) {
hisi_reset_exit(crg->rstc);
return PTR_ERR(crg->clk_data);
}
platform_set_drvdata(pdev, crg);
return 0;
}
static int hi3798cv200_crg_remove(struct platform_device *pdev)
{
struct hisi_crg_dev *crg = platform_get_drvdata(pdev);
hisi_reset_exit(crg->rstc);
crg->funcs->unregister_clks(pdev);
return 0;
}
static struct platform_driver hi3798cv200_crg_driver = {
.probe = hi3798cv200_crg_probe,
.remove = hi3798cv200_crg_remove,
.driver = {
.name = "hi3798cv200-crg",
.of_match_table = hi3798cv200_crg_match_table,
},
};
static int __init hi3798cv200_crg_init(void)
{
return platform_driver_register(&hi3798cv200_crg_driver);
}
core_initcall(hi3798cv200_crg_init);
static void __exit hi3798cv200_crg_exit(void)
{
platform_driver_unregister(&hi3798cv200_crg_driver);
}
module_exit(hi3798cv200_crg_exit);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("HiSilicon Hi3798CV200 CRG Driver");