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>

diff --git a/drivers/clk/mediatek/clk-mt8183.c b/drivers/clk/mediatek/clk-mt8183.c
index 1aa5f40..94bbadc 100644 (file)
--- a/drivers/clk/mediatek/clk-mt8183.c
+++ b/drivers/clk/mediatek/clk-mt8183.c
@@ -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)

diff --git a/drivers/clk/mediatek/clk-mtk.h b/drivers/clk/mediatek/clk-mtk.h
index 733a11d..2e9e260 100644 (file)
--- a/drivers/clk/mediatek/clk-mtk.h
+++ b/drivers/clk/mediatek/clk-mtk.h
@@ -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 */

diff --git a/drivers/clk/mediatek/reset.c b/drivers/clk/mediatek/reset.c
index d8376b9..cb939c0 100644 (file)
--- a/drivers/clk/mediatek/reset.c
+++ b/drivers/clk/mediatek/reset.c
@@ -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);
+}

diff --git a/include/dt-bindings/reset-controller/mt8183-resets.h b/include/dt-bindings/reset-controller/mt8183-resets.h
new file mode 100644 (file)
index 0000000..8804e34
--- /dev/null
+++ b/include/dt-bindings/reset-controller/mt8183-resets.h
@@ -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 */