From 4b5e9b39e7dd9e6b980ad588f1f7a36fe7cda044 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 17 Aug 2020 09:10:33 +0200 Subject: [PATCH] staging: mfd: hi6421-spmi-pmic: get rid of the static vars There are several static vars inside this driver. Get rid of them. While here, add a SPDX header file. Signed-off-by: Mauro Carvalho Chehab Link: https://lore.kernel.org/r/19c497fc2bb1d3a95863d92cac89869d5abe3f2e.1597647359.git.mchehab+huawei@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/staging/hikey9xx/hi6421-spmi-pmic.c | 224 ++++++++++++---------------- include/linux/mfd/hi6421-spmi-pmic.h | 20 +-- 2 files changed, 97 insertions(+), 147 deletions(-) diff --git a/drivers/staging/hikey9xx/hi6421-spmi-pmic.c b/drivers/staging/hikey9xx/hi6421-spmi-pmic.c index 8b87d48..be42fed 100644 --- a/drivers/staging/hikey9xx/hi6421-spmi-pmic.c +++ b/drivers/staging/hikey9xx/hi6421-spmi-pmic.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Device driver for regulators in HISI PMIC IC * @@ -52,10 +53,7 @@ /*define the first group interrupt register number*/ #define HISI_PMIC_FIRST_GROUP_INT_NUM 2 -static struct bit_info g_pmic_vbus = {0}; -static struct hisi_pmic *g_pmic; -static unsigned int g_extinterrupt_flag = 0; -static struct of_device_id of_hisi_pmic_match_tbl[] = { +static const struct of_device_id of_hisi_pmic_match_tbl[] = { { .compatible = "hisilicon-hisi-pmic-spmi", }, @@ -73,18 +71,14 @@ u32 hisi_pmic_read(struct hisi_pmic *pmic, int reg) u8 read_value = 0; struct spmi_device *pdev; - if (!g_pmic) { - pr_err("%s: g_pmic is NULL\n", __func__); - return 0; - } - - pdev = to_spmi_device(g_pmic->dev); + pdev = to_spmi_device(pmic->dev); if (!pdev) { pr_err("%s: pdev get failed!\n", __func__); return 0; } - ret = spmi_ext_register_readl(pdev, reg, (unsigned char*)&read_value, 1);/*lint !e734 !e732 */ + ret = spmi_ext_register_readl(pdev, reg, + (unsigned char *)&read_value, 1); if (ret) { pr_err("%s: spmi_ext_register_readl failed!\n", __func__); return 0; @@ -98,18 +92,13 @@ void hisi_pmic_write(struct hisi_pmic *pmic, int reg, u32 val) u32 ret; struct spmi_device *pdev; - if (!g_pmic) { - pr_err("%s: g_pmic is NULL\n", __func__); - return; - } - - pdev = to_spmi_device(g_pmic->dev); + pdev = to_spmi_device(pmic->dev); if (!pdev) { pr_err("%s: pdev get failed!\n", __func__); return; } - ret = spmi_ext_register_writel(pdev, reg, (unsigned char*)&val, 1);/*lint !e734 !e732 */ + ret = spmi_ext_register_writel(pdev, reg, (unsigned char *)&val, 1); if (ret) { pr_err("%s: spmi_ext_register_writel failed!\n", __func__); return; @@ -122,16 +111,11 @@ void hisi_pmic_rmw(struct hisi_pmic *pmic, int reg, u32 mask, u32 bits) u32 data; unsigned long flags; - if (!g_pmic) { - pr_err("%s: g_pmic is NULL\n", __func__); - return; - } - - spin_lock_irqsave(&g_pmic->lock, flags); + spin_lock_irqsave(&pmic->lock, flags); data = hisi_pmic_read(pmic, reg) & ~mask; data |= mask & bits; hisi_pmic_write(pmic, reg, data); - spin_unlock_irqrestore(&g_pmic->lock, flags); + spin_unlock_irqrestore(&pmic->lock, flags); } EXPORT_SYMBOL(hisi_pmic_rmw); @@ -142,16 +126,15 @@ static irqreturn_t hisi_irq_handler(int irq, void *data) int i, offset; for (i = 0; i < pmic->irqarray; i++) { - pending = hisi_pmic_read(g_pmic, (i + pmic->irq_addr.start_addr)); + pending = hisi_pmic_read(pmic, (i + pmic->irq_addr.start_addr)); pending &= HISI_MASK_FIELD; - if (pending != 0) { - pr_info("pending[%d]=0x%lx\n\r", i, pending); - } + if (pending != 0) + pr_debug("pending[%d]=0x%lx\n\r", i, pending); - hisi_pmic_write(g_pmic, (i + pmic->irq_addr.start_addr), pending); + hisi_pmic_write(pmic, (i + pmic->irq_addr.start_addr), pending); - /*solve powerkey order*/ - if ((HISI_IRQ_KEY_NUM == i) && ((pending & HISI_IRQ_KEY_VALUE) == HISI_IRQ_KEY_VALUE)) { + /* solve powerkey order */ + if ((i == HISI_IRQ_KEY_NUM) && ((pending & HISI_IRQ_KEY_VALUE) == HISI_IRQ_KEY_VALUE)) { generic_handle_irq(pmic->irqs[HISI_IRQ_KEY_DOWN]); generic_handle_irq(pmic->irqs[HISI_IRQ_KEY_UP]); pending &= (~HISI_IRQ_KEY_VALUE); @@ -159,25 +142,25 @@ static irqreturn_t hisi_irq_handler(int irq, void *data) if (pending) { for_each_set_bit(offset, &pending, HISI_BITS) - generic_handle_irq(pmic->irqs[offset + i * HISI_BITS]);/*lint !e679 */ + generic_handle_irq(pmic->irqs[offset + i * HISI_BITS]); } } /*Handle the second group irq if analysis the second group irq from dtsi*/ - if (1 == g_extinterrupt_flag){ + if (pmic->g_extinterrupt_flag == 1) { for (i = 0; i < pmic->irqarray1; i++) { - pending = hisi_pmic_read(g_pmic, (i + pmic->irq_addr1.start_addr)); + pending = hisi_pmic_read(pmic, (i + pmic->irq_addr1.start_addr)); pending &= HISI_MASK_FIELD; - if (pending != 0) { - pr_info("pending[%d]=0x%lx\n\r", i, pending); - } + if (pending != 0) + pr_debug("pending[%d]=0x%lx\n\r", i, pending); + + hisi_pmic_write(pmic, (i + pmic->irq_addr1.start_addr), pending); - hisi_pmic_write(g_pmic, (i + pmic->irq_addr1.start_addr), pending); + if (!pending) + continue; - if (pending) { - for_each_set_bit(offset, &pending, HISI_BITS) - generic_handle_irq(pmic->irqs[offset + (i+HISI_PMIC_FIRST_GROUP_INT_NUM) * HISI_BITS]);/*lint !e679 */ - } + for_each_set_bit(offset, &pending, HISI_BITS) + generic_handle_irq(pmic->irqs[offset + (i + HISI_PMIC_FIRST_GROUP_INT_NUM) * HISI_BITS]); } } @@ -190,25 +173,25 @@ static void hisi_irq_mask(struct irq_data *d) u32 data, offset; unsigned long flags; - if (NULL == g_pmic) { - pr_err(" g_pmic is NULL\n"); - return; - } - offset = (irqd_to_hwirq(d) >> 3); - if (1==g_extinterrupt_flag){ - if ( offset < HISI_PMIC_FIRST_GROUP_INT_NUM) + if (pmic->g_extinterrupt_flag == 1) { + if (offset < HISI_PMIC_FIRST_GROUP_INT_NUM) { offset += pmic->irq_mask_addr.start_addr; - else/*Change addr when irq num larger than 16 because interrupt addr is nonsequence*/ - offset = offset+(pmic->irq_mask_addr1.start_addr)-HISI_PMIC_FIRST_GROUP_INT_NUM; - }else{ + } else { + /* + * Change addr when irq num larger than 16 because + * interrupt addr is nonsequence + */ + offset = offset + (pmic->irq_mask_addr1.start_addr) - HISI_PMIC_FIRST_GROUP_INT_NUM; + } + } else { offset += pmic->irq_mask_addr.start_addr; } - spin_lock_irqsave(&g_pmic->lock, flags); - data = hisi_pmic_read(g_pmic, offset); + spin_lock_irqsave(&pmic->lock, flags); + data = hisi_pmic_read(pmic, offset); data |= (1 << (irqd_to_hwirq(d) & 0x07)); - hisi_pmic_write(g_pmic, offset, data); - spin_unlock_irqrestore(&g_pmic->lock, flags); + hisi_pmic_write(pmic, offset, data); + spin_unlock_irqrestore(&pmic->lock, flags); } static void hisi_irq_unmask(struct irq_data *d) @@ -217,25 +200,20 @@ static void hisi_irq_unmask(struct irq_data *d) u32 data, offset; unsigned long flags; - if (NULL == g_pmic) { - pr_err(" g_pmic is NULL\n"); - return; - } - offset = (irqd_to_hwirq(d) >> 3); - if (1==g_extinterrupt_flag){ - if ( offset < HISI_PMIC_FIRST_GROUP_INT_NUM) + if (pmic->g_extinterrupt_flag == 1) { + if (offset < HISI_PMIC_FIRST_GROUP_INT_NUM) offset += pmic->irq_mask_addr.start_addr; else - offset = offset+(pmic->irq_mask_addr1.start_addr)-HISI_PMIC_FIRST_GROUP_INT_NUM; - }else{ + offset = offset + (pmic->irq_mask_addr1.start_addr) - HISI_PMIC_FIRST_GROUP_INT_NUM; + } else { offset += pmic->irq_mask_addr.start_addr; } - spin_lock_irqsave(&g_pmic->lock, flags); - data = hisi_pmic_read(g_pmic, offset); + spin_lock_irqsave(&pmic->lock, flags); + data = hisi_pmic_read(pmic, offset); data &= ~(1 << (irqd_to_hwirq(d) & 0x07)); - hisi_pmic_write(g_pmic, offset, data); - spin_unlock_irqrestore(&g_pmic->lock, flags); + hisi_pmic_write(pmic, offset, data); + spin_unlock_irqrestore(&pmic->lock, flags); } static struct irq_chip hisi_pmu_irqchip = { @@ -247,7 +225,7 @@ static struct irq_chip hisi_pmu_irqchip = { }; static int hisi_irq_map(struct irq_domain *d, unsigned int virq, - irq_hw_number_t hw) + irq_hw_number_t hw) { struct hisi_pmic *pmic = d->host_data; @@ -259,19 +237,18 @@ static int hisi_irq_map(struct irq_domain *d, unsigned int virq, return 0; } -static struct irq_domain_ops hisi_domain_ops = { +static const struct irq_domain_ops hisi_domain_ops = { .map = hisi_irq_map, .xlate = irq_domain_xlate_twocell, }; -/*lint -e570 -e64*/ static int get_pmic_device_tree_data(struct device_node *np, struct hisi_pmic *pmic) { int ret = 0; /*get pmic irq num*/ ret = of_property_read_u32_array(np, "hisilicon,hisi-pmic-irq-num", - &(pmic->irqnum), 1); + &pmic->irqnum, 1); if (ret) { pr_err("no hisilicon,hisi-pmic-irq-num property set\n"); ret = -ENODEV; @@ -280,7 +257,7 @@ static int get_pmic_device_tree_data(struct device_node *np, struct hisi_pmic *p /*get pmic irq array number*/ ret = of_property_read_u32_array(np, "hisilicon,hisi-pmic-irq-array", - &(pmic->irqarray), 1); + &pmic->irqarray, 1); if (ret) { pr_err("no hisilicon,hisi-pmic-irq-array property set\n"); ret = -ENODEV; @@ -289,7 +266,7 @@ static int get_pmic_device_tree_data(struct device_node *np, struct hisi_pmic *p /*SOC_PMIC_IRQ_MASK_0_ADDR*/ ret = of_property_read_u32_array(np, "hisilicon,hisi-pmic-irq-mask-addr", - (int *)&pmic->irq_mask_addr, 2); + (int *)&pmic->irq_mask_addr, 2); if (ret) { pr_err("no hisilicon,hisi-pmic-irq-mask-addr property set\n"); ret = -ENODEV; @@ -298,24 +275,16 @@ static int get_pmic_device_tree_data(struct device_node *np, struct hisi_pmic *p /*SOC_PMIC_IRQ0_ADDR*/ ret = of_property_read_u32_array(np, "hisilicon,hisi-pmic-irq-addr", - (int *)&pmic->irq_addr, 2); + (int *)&pmic->irq_addr, 2); if (ret) { pr_err("no hisilicon,hisi-pmic-irq-addr property set\n"); ret = -ENODEV; return ret; } - ret = of_property_read_u32_array(np, "hisilicon,hisi-pmic-vbus", - (u32 *)&g_pmic_vbus, 2); - if (ret) { - pr_err("no hisilicon,hisi-pmic-vbus property\n"); - ret = -ENODEV; - return ret; - } - /*pmic lock*/ ret = of_property_read_u32_array(np, "hisilicon,hisi-pmic-lock", - (int *)&pmic->normal_lock, 2); + (int *)&pmic->normal_lock, 2); if (ret) { pr_err("no hisilicon,hisi-pmic-lock property set\n"); ret = -ENODEV; @@ -324,7 +293,7 @@ static int get_pmic_device_tree_data(struct device_node *np, struct hisi_pmic *p /*pmic debug lock*/ ret = of_property_read_u32_array(np, "hisilicon,hisi-pmic-debug-lock", - (int *)&pmic->debug_lock, 2); + (int *)&pmic->debug_lock, 2); if (ret) { pr_err("no hisilicon,hisi-pmic-debug-lock property set\n"); ret = -ENODEV; @@ -332,17 +301,15 @@ static int get_pmic_device_tree_data(struct device_node *np, struct hisi_pmic *p } return ret; -}/*lint -restore*/ - +} -/*lint -e570 -e64*/ static int get_pmic_device_tree_data1(struct device_node *np, struct hisi_pmic *pmic) { int ret = 0; /*get pmic irq num*/ ret = of_property_read_u32_array(np, "hisilicon,hisi-pmic-irq-num1", - &(pmic->irqnum1), 1); + &pmic->irqnum1, 1); if (ret) { pr_err("no hisilicon,hisi-pmic-irq-num1 property set\n"); ret = -ENODEV; @@ -352,7 +319,7 @@ static int get_pmic_device_tree_data1(struct device_node *np, struct hisi_pmic * /*get pmic irq array number*/ ret = of_property_read_u32_array(np, "hisilicon,hisi-pmic-irq-array1", - &(pmic->irqarray1), 1); + &pmic->irqarray1, 1); if (ret) { pr_err("no hisilicon,hisi-pmic-irq-array1 property set\n"); ret = -ENODEV; @@ -361,7 +328,7 @@ static int get_pmic_device_tree_data1(struct device_node *np, struct hisi_pmic * /*SOC_PMIC_IRQ_MASK_0_ADDR*/ ret = of_property_read_u32_array(np, "hisilicon,hisi-pmic-irq-mask-addr1", - (int *)&pmic->irq_mask_addr1, 2); + (int *)&pmic->irq_mask_addr1, 2); if (ret) { pr_err("no hisilicon,hisi-pmic-irq-mask-addr1 property set\n"); ret = -ENODEV; @@ -370,43 +337,48 @@ static int get_pmic_device_tree_data1(struct device_node *np, struct hisi_pmic * /*SOC_PMIC_IRQ0_ADDR*/ ret = of_property_read_u32_array(np, "hisilicon,hisi-pmic-irq-addr1", - (int *)&pmic->irq_addr1, 2); + (int *)&pmic->irq_addr1, 2); if (ret) { pr_err("no hisilicon,hisi-pmic-irq-addr1 property set\n"); ret = -ENODEV; return ret; } - g_extinterrupt_flag = 1; + pmic->g_extinterrupt_flag = 1; return ret; -}/*lint -restore*/ +} static void hisi_pmic_irq_prc(struct hisi_pmic *pmic) { int i; - for (i = 0 ; i < pmic->irq_mask_addr.array; i++) { + + for (i = 0 ; i < pmic->irq_mask_addr.array; i++) hisi_pmic_write(pmic, pmic->irq_mask_addr.start_addr + i, HISI_MASK_STATE); - } for (i = 0 ; i < pmic->irq_addr.array; i++) { unsigned int pending = hisi_pmic_read(pmic, pmic->irq_addr.start_addr + i); - pr_debug("PMU IRQ address value:irq[0x%x] = 0x%x\n", pmic->irq_addr.start_addr + i, pending); + + pr_debug("PMU IRQ address value:irq[0x%x] = 0x%x\n", + pmic->irq_addr.start_addr + i, pending); hisi_pmic_write(pmic, pmic->irq_addr.start_addr + i, HISI_MASK_STATE); } - } static void hisi_pmic_irq1_prc(struct hisi_pmic *pmic) { int i; - if(1 == g_extinterrupt_flag){ - for (i = 0 ; i < pmic->irq_mask_addr1.array; i++) { + unsigned int pending1; + + if (pmic->g_extinterrupt_flag == 1) { + for (i = 0 ; i < pmic->irq_mask_addr1.array; i++) hisi_pmic_write(pmic, pmic->irq_mask_addr1.start_addr + i, HISI_MASK_STATE); - } for (i = 0 ; i < pmic->irq_addr1.array; i++) { - unsigned int pending1 = hisi_pmic_read(pmic, pmic->irq_addr1.start_addr + i); - pr_debug("PMU IRQ address1 value:irq[0x%x] = 0x%x\n", pmic->irq_addr1.start_addr + i, pending1); + pending1 = hisi_pmic_read(pmic, pmic->irq_addr1.start_addr + i); + + pr_debug("PMU IRQ address1 value:irq[0x%x] = 0x%x\n", + pmic->irq_addr1.start_addr + i, pending1); + hisi_pmic_write(pmic, pmic->irq_addr1.start_addr + i, HISI_MASK_STATE); } } @@ -424,36 +396,32 @@ static int hisi_pmic_probe(struct spmi_device *pdev) unsigned int virq; pmic = devm_kzalloc(dev, sizeof(*pmic), GFP_KERNEL); - if (!pmic) { - dev_err(dev, "cannot allocate hisi_pmic device info\n"); + if (!pmic) return -ENOMEM; - } /*TODO: get pmic dts info*/ ret = get_pmic_device_tree_data(np, pmic); if (ret) { - dev_err(&pdev->dev, "Error reading hisi pmic dts \n"); + dev_err(&pdev->dev, "Error reading hisi pmic dts\n"); return ret; } /*get pmic dts the second group irq*/ ret = get_pmic_device_tree_data1(np, pmic); - if (ret) { + if (ret) dev_err(&pdev->dev, "the platform don't support ext-interrupt.\n"); - } /* TODO: get and enable clk request */ spin_lock_init(&pmic->lock); pmic->dev = dev; - g_pmic = pmic; - ret = of_property_read_u32_array(np, "hisilicon,pmic_fpga_flag", &fpga_flag, 1); - if (ret) { + ret = of_property_read_u32_array(np, "hisilicon,pmic_fpga_flag", + &fpga_flag, 1); + if (ret) pr_err("no hisilicon,pmic_fpga_flag property set\n"); - } - if (PMIC_FPGA_FLAG == fpga_flag) { + + if (fpga_flag == PMIC_FPGA_FLAG) goto after_irq_register; - } pmic->gpio = of_get_gpio_flags(np, 0, &flags); if (pmic->gpio < 0) @@ -477,12 +445,9 @@ static int hisi_pmic_probe(struct spmi_device *pdev) pmic->irqnum += pmic->irqnum1; - pmic->irqs = (unsigned int *)devm_kmalloc(dev, pmic->irqnum * sizeof(int), GFP_KERNEL); - if (!pmic->irqs) { - pr_err("%s:Failed to alloc memory for pmic irq number!\n", __func__); + pmic->irqs = devm_kzalloc(dev, pmic->irqnum * sizeof(int), GFP_KERNEL); + if (!pmic->irqs) goto irq_malloc; - } - memset(pmic->irqs, 0, pmic->irqnum); pmic->domain = irq_domain_add_simple(np, pmic->irqnum, 0, &hisi_domain_ops, pmic); @@ -504,7 +469,7 @@ static int hisi_pmic_probe(struct spmi_device *pdev) } ret = request_threaded_irq(pmic->irq, hisi_irq_handler, NULL, - IRQF_TRIGGER_LOW | IRQF_SHARED | IRQF_NO_SUSPEND, + IRQF_TRIGGER_LOW | IRQF_SHARED | IRQF_NO_SUSPEND, "pmic", pmic); if (ret < 0) { dev_err(dev, "could not claim pmic %d\n", ret); @@ -515,31 +480,28 @@ static int hisi_pmic_probe(struct spmi_device *pdev) after_irq_register: return 0; - request_theaded_irq: irq_create_mapping: irq_domain: irq_malloc: gpio_free(pmic->gpio); - g_pmic = NULL; return ret; } static void hisi_pmic_remove(struct spmi_device *pdev) { - struct hisi_pmic *pmic = dev_get_drvdata(&pdev->dev); free_irq(pmic->irq, pmic); gpio_free(pmic->gpio); devm_kfree(&pdev->dev, pmic); - } + static int hisi_pmic_suspend(struct device *dev, pm_message_t state) { struct hisi_pmic *pmic = dev_get_drvdata(dev); - if (NULL == pmic) { + if (!pmic) { pr_err("%s:pmic is NULL\n", __func__); return -ENOMEM; } @@ -548,13 +510,13 @@ static int hisi_pmic_suspend(struct device *dev, pm_message_t state) pr_info("%s:-\n", __func__); return 0; -}/*lint !e715 */ +} static int hisi_pmic_resume(struct device *dev) { struct hisi_pmic *pmic = dev_get_drvdata(dev); - if (NULL == pmic) { + if (!pmic) { pr_err("%s:pmic is NULL\n", __func__); return -ENOMEM; } @@ -588,10 +550,8 @@ static void __exit hisi_pmic_exit(void) spmi_driver_unregister(&hisi_pmic_driver); } - subsys_initcall_sync(hisi_pmic_init); module_exit(hisi_pmic_exit); MODULE_DESCRIPTION("PMIC driver"); MODULE_LICENSE("GPL v2"); - diff --git a/include/linux/mfd/hi6421-spmi-pmic.h b/include/linux/mfd/hi6421-spmi-pmic.h index 5be9b4d..e0a8b50 100644 --- a/include/linux/mfd/hi6421-spmi-pmic.h +++ b/include/linux/mfd/hi6421-spmi-pmic.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * Header file for device driver Hi6421 PMIC * @@ -5,19 +6,6 @@ * Copyright (C) 2011 Hisilicon. * * Guodong Xu - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * 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, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #ifndef __HISI_PMIC_H @@ -25,12 +13,12 @@ #include -#define HISI_REGS_ENA_PROTECT_TIME (0) /* in microseconds */ +#define HISI_REGS_ENA_PROTECT_TIME (0) /* in microseconds */ #define HISI_ECO_MODE_ENABLE (1) #define HISI_ECO_MODE_DISABLE (0) typedef int (*pmic_ocp_callback)(char *); -extern int hisi_pmic_special_ocp_register(char *power_name, pmic_ocp_callback handler); +int hisi_pmic_special_ocp_register(char *power_name, pmic_ocp_callback handler); struct irq_mask_info { int start_addr; @@ -71,6 +59,8 @@ struct hisi_pmic { struct irq_info irq_addr1; struct write_lock normal_lock; struct write_lock debug_lock; + + unsigned int g_extinterrupt_flag; }; /* 0:disable; 1:enable */ -- 2.7.4