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clk: reset: Modify reset-controller driver 

Set reset signal by a register and
clear reset signal by another register for 8183.

Signed-off-by: yong.liang <yong.liang@mediatek.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
yong.liang 2019-07-26 15:01:35 +08:00 committed by Stephen Boyd
parent 5f9e832c13
commit 64ebb57a3d
4 changed files with 152 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/clk/mediatek/clk-mt8183.c
View File

@ -17,6 +17,9 @@
#include <dt-bindings/clock/mt8183-clk.h>
/* Infra global controller reset set register */
#define INFRA_RST0_SET_OFFSET 0x120
static DEFINE_SPINLOCK(mt8183_clk_lock);
static const struct mtk_fixed_clk top_fixed_clks[] = {
@ -1185,13 +1188,24 @@ static int clk_mt8183_infra_probe(struct platform_device *pdev)
{
struct clk_onecell_data *clk_data;
struct device_node *node = pdev->dev.of_node;
int r;
clk_data = mtk_alloc_clk_data(CLK_INFRA_NR_CLK);
mtk_clk_register_gates(node, infra_clks, ARRAY_SIZE(infra_clks),
clk_data);
return of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
if (r) {
dev_err(&pdev->dev,
"%s(): could not register clock provider: %d\n",
__func__, r);
return r;
}
mtk_register_reset_controller_set_clr(node, 4, INFRA_RST0_SET_OFFSET);
return r;
}
static int clk_mt8183_mcu_probe(struct platform_device *pdev)

3
drivers/clk/mediatek/clk-mtk.h
View File

@ -240,4 +240,7 @@ struct clk *mtk_clk_register_ref2usb_tx(const char *name,
void mtk_register_reset_controller(struct device_node *np,
unsigned int num_regs, int regofs);
void mtk_register_reset_controller_set_clr(struct device_node *np,
unsigned int num_regs, int regofs);
#endif /* __DRV_CLK_MTK_H */

56
drivers/clk/mediatek/reset.c
View File

@ -19,6 +19,24 @@ struct mtk_reset {
struct reset_controller_dev rcdev;
};
static int mtk_reset_assert_set_clr(struct reset_controller_dev *rcdev,
unsigned long id)
{
struct mtk_reset *data = container_of(rcdev, struct mtk_reset, rcdev);
unsigned int reg = data->regofs + ((id / 32) << 4);
return regmap_write(data->regmap, reg, 1);
}
static int mtk_reset_deassert_set_clr(struct reset_controller_dev *rcdev,
unsigned long id)
{
struct mtk_reset *data = container_of(rcdev, struct mtk_reset, rcdev);
unsigned int reg = data->regofs + ((id / 32) << 4) + 0x4;
return regmap_write(data->regmap, reg, 1);
}
static int mtk_reset_assert(struct reset_controller_dev *rcdev,
unsigned long id)
{
@ -49,14 +67,32 @@ static int mtk_reset(struct reset_controller_dev *rcdev,
return mtk_reset_deassert(rcdev, id);
}
static int mtk_reset_set_clr(struct reset_controller_dev *rcdev,
unsigned long id)
{
int ret;
ret = mtk_reset_assert_set_clr(rcdev, id);
if (ret)
return ret;
return mtk_reset_deassert_set_clr(rcdev, id);
}
static const struct reset_control_ops mtk_reset_ops = {
.assert = mtk_reset_assert,
.deassert = mtk_reset_deassert,
.reset = mtk_reset,
};
void mtk_register_reset_controller(struct device_node *np,
unsigned int num_regs, int regofs)
static const struct reset_control_ops mtk_reset_ops_set_clr = {
.assert = mtk_reset_assert_set_clr,
.deassert = mtk_reset_deassert_set_clr,
.reset = mtk_reset_set_clr,
};
static void mtk_register_reset_controller_common(struct device_node *np,
unsigned int num_regs, int regofs,
const struct reset_control_ops *reset_ops)
{
struct mtk_reset *data;
int ret;
@ -77,7 +113,7 @@ void mtk_register_reset_controller(struct device_node *np,
data->regofs = regofs;
data->rcdev.owner = THIS_MODULE;
data->rcdev.nr_resets = num_regs * 32;
data->rcdev.ops = &mtk_reset_ops;
data->rcdev.ops = reset_ops;
data->rcdev.of_node = np;
ret = reset_controller_register(&data->rcdev);
@ -87,3 +123,17 @@ void mtk_register_reset_controller(struct device_node *np,
return;
}
}
void mtk_register_reset_controller(struct device_node *np,
unsigned int num_regs, int regofs)
{
mtk_register_reset_controller_common(np, num_regs, regofs,
&mtk_reset_ops);
}
void mtk_register_reset_controller_set_clr(struct device_node *np,
unsigned int num_regs, int regofs)
{
mtk_register_reset_controller_common(np, num_regs, regofs,
&mtk_reset_ops_set_clr);
}

81
include/dt-bindings/reset-controller/mt8183-resets.h Normal file
View File

@ -0,0 +1,81 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2019 MediaTek Inc.
* Author: Yong Liang <yong.liang@mediatek.com>
*/
#ifndef _DT_BINDINGS_RESET_CONTROLLER_MT8183
#define _DT_BINDINGS_RESET_CONTROLLER_MT8183
/* INFRACFG AO resets */
#define MT8183_INFRACFG_AO_THERM_SW_RST 0
#define MT8183_INFRACFG_AO_USB_TOP_SW_RST 1
#define MT8183_INFRACFG_AO_MM_IOMMU_SW_RST 3
#define MT8183_INFRACFG_AO_MSDC3_SW_RST 4
#define MT8183_INFRACFG_AO_MSDC2_SW_RST 5
#define MT8183_INFRACFG_AO_MSDC1_SW_RST 6
#define MT8183_INFRACFG_AO_MSDC0_SW_RST 7
#define MT8183_INFRACFG_AO_APDMA_SW_RST 9
#define MT8183_INFRACFG_AO_MIMP_D_SW_RST 10
#define MT8183_INFRACFG_AO_BTIF_SW_RST 12
#define MT8183_INFRACFG_AO_DISP_PWM_SW_RST 14
#define MT8183_INFRACFG_AO_AUXADC_SW_RST 15
#define MT8183_INFRACFG_AO_IRTX_SW_RST 32
#define MT8183_INFRACFG_AO_SPI0_SW_RST 33
#define MT8183_INFRACFG_AO_I2C0_SW_RST 34
#define MT8183_INFRACFG_AO_I2C1_SW_RST 35
#define MT8183_INFRACFG_AO_I2C2_SW_RST 36
#define MT8183_INFRACFG_AO_I2C3_SW_RST 37
#define MT8183_INFRACFG_AO_UART0_SW_RST 38
#define MT8183_INFRACFG_AO_UART1_SW_RST 39
#define MT8183_INFRACFG_AO_UART2_SW_RST 40
#define MT8183_INFRACFG_AO_PWM_SW_RST 41
#define MT8183_INFRACFG_AO_SPI1_SW_RST 42
#define MT8183_INFRACFG_AO_I2C4_SW_RST 43
#define MT8183_INFRACFG_AO_DVFSP_SW_RST 44
#define MT8183_INFRACFG_AO_SPI2_SW_RST 45
#define MT8183_INFRACFG_AO_SPI3_SW_RST 46
#define MT8183_INFRACFG_AO_UFSHCI_SW_RST 47
#define MT8183_INFRACFG_AO_PMIC_WRAP_SW_RST 64
#define MT8183_INFRACFG_AO_SPM_SW_RST 65
#define MT8183_INFRACFG_AO_USBSIF_SW_RST 66
#define MT8183_INFRACFG_AO_KP_SW_RST 68
#define MT8183_INFRACFG_AO_APXGPT_SW_RST 69
#define MT8183_INFRACFG_AO_CLDMA_AO_SW_RST 70
#define MT8183_INFRACFG_AO_UNIPRO_UFS_SW_RST 71
#define MT8183_INFRACFG_AO_DX_CC_SW_RST 72
#define MT8183_INFRACFG_AO_UFSPHY_SW_RST 73
#define MT8183_INFRACFG_AO_DX_CC_SEC_SW_RST 96
#define MT8183_INFRACFG_AO_GCE_SW_RST 97
#define MT8183_INFRACFG_AO_CLDMA_SW_RST 98
#define MT8183_INFRACFG_AO_TRNG_SW_RST 99
#define MT8183_INFRACFG_AO_AP_MD_CCIF_1_SW_RST 103
#define MT8183_INFRACFG_AO_AP_MD_CCIF_SW_RST 104
#define MT8183_INFRACFG_AO_I2C1_IMM_SW_RST 105
#define MT8183_INFRACFG_AO_I2C1_ARB_SW_RST 106
#define MT8183_INFRACFG_AO_I2C2_IMM_SW_RST 107
#define MT8183_INFRACFG_AO_I2C2_ARB_SW_RST 108
#define MT8183_INFRACFG_AO_I2C5_SW_RST 109
#define MT8183_INFRACFG_AO_I2C5_IMM_SW_RST 110
#define MT8183_INFRACFG_AO_I2C5_ARB_SW_RST 111
#define MT8183_INFRACFG_AO_SPI4_SW_RST 112
#define MT8183_INFRACFG_AO_SPI5_SW_RST 113
#define MT8183_INFRACFG_AO_INFRA2MFGAXI_CBIP_CLAS_SW_RST 114
#define MT8183_INFRACFG_AO_MFGAXI2INFRA_M0_CBIP_GLAS_OUT_SW_RST 115
#define MT8183_INFRACFG_AO_MFGAXI2INFRA_M1_CBIP_GLAS_OUT_SW_RST 116
#define MT8183_INFRACFG_AO_UFS_AES_SW_RST 117
#define MT8183_INFRACFG_AO_CCU_I2C_IRQ_SW_RST 118
#define MT8183_INFRACFG_AO_CCU_I2C_DMA_SW_RST 119
#define MT8183_INFRACFG_AO_I2C6_SW_RST 120
#define MT8183_INFRACFG_AO_CCU_GALS_SW_RST 121
#define MT8183_INFRACFG_AO_IPU_GALS_SW_RST 122
#define MT8183_INFRACFG_AO_CONN2AP_GALS_SW_RST 123
#define MT8183_INFRACFG_AO_AP_MD_CCIF2_SW_RST 124
#define MT8183_INFRACFG_AO_AP_MD_CCIF3_SW_RST 125
#define MT8183_INFRACFG_AO_I2C7_SW_RST 126
#define MT8183_INFRACFG_AO_I2C8_SW_RST 127
#endif /* _DT_BINDINGS_RESET_CONTROLLER_MT8183 */