![Kees Cook](/assets/img/avatar_default.png)
The kzalloc() function has a 2-factor argument form, kcalloc(). This patch replaces cases of: kzalloc(a * b, gfp) with: kcalloc(a * b, gfp) as well as handling cases of: kzalloc(a * b * c, gfp) with: kzalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kzalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kzalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kzalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kzalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kzalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(char) * COUNT + COUNT , ...) | kzalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kzalloc + kcalloc ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kzalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kzalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kzalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kzalloc(C1 * C2 * C3, ...) | kzalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kzalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kzalloc(sizeof(THING) * C2, ...) | kzalloc(sizeof(TYPE) * C2, ...) | kzalloc(C1 * C2 * C3, ...) | kzalloc(C1 * C2, ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - (E1) * E2 + E1, E2 , ...) | - kzalloc + kcalloc ( - (E1) * (E2) + E1, E2 , ...) | - kzalloc + kcalloc ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
611 lines
15 KiB
C
611 lines
15 KiB
C
/*
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* Copyright (C) 2010 OKI SEMICONDUCTOR Co., LTD.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/pci.h>
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#include <linux/gpio/driver.h>
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#define IOH_EDGE_FALLING 0
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#define IOH_EDGE_RISING BIT(0)
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#define IOH_LEVEL_L BIT(1)
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#define IOH_LEVEL_H (BIT(0) | BIT(1))
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#define IOH_EDGE_BOTH BIT(2)
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#define IOH_IM_MASK (BIT(0) | BIT(1) | BIT(2))
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#define IOH_IRQ_BASE 0
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#define PCI_VENDOR_ID_ROHM 0x10DB
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struct ioh_reg_comn {
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u32 ien;
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u32 istatus;
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u32 idisp;
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u32 iclr;
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u32 imask;
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u32 imaskclr;
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u32 po;
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u32 pi;
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u32 pm;
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u32 im_0;
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u32 im_1;
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u32 reserved;
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};
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struct ioh_regs {
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struct ioh_reg_comn regs[8];
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u32 reserve1[16];
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u32 ioh_sel_reg[4];
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u32 reserve2[11];
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u32 srst;
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};
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/**
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* struct ioh_gpio_reg_data - The register store data.
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* @ien_reg To store contents of interrupt enable register.
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* @imask_reg: To store contents of interrupt mask regist
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* @po_reg: To store contents of PO register.
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* @pm_reg: To store contents of PM register.
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* @im0_reg: To store contents of interrupt mode regist0
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* @im1_reg: To store contents of interrupt mode regist1
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* @use_sel_reg: To store contents of GPIO_USE_SEL0~3
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*/
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struct ioh_gpio_reg_data {
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u32 ien_reg;
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u32 imask_reg;
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u32 po_reg;
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u32 pm_reg;
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u32 im0_reg;
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u32 im1_reg;
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u32 use_sel_reg;
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};
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/**
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* struct ioh_gpio - GPIO private data structure.
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* @base: PCI base address of Memory mapped I/O register.
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* @reg: Memory mapped IOH GPIO register list.
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* @dev: Pointer to device structure.
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* @gpio: Data for GPIO infrastructure.
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* @ioh_gpio_reg: Memory mapped Register data is saved here
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* when suspend.
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* @gpio_use_sel: Save GPIO_USE_SEL1~4 register for PM
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* @ch: Indicate GPIO channel
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* @irq_base: Save base of IRQ number for interrupt
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* @spinlock: Used for register access protection
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*/
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struct ioh_gpio {
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void __iomem *base;
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struct ioh_regs __iomem *reg;
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struct device *dev;
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struct gpio_chip gpio;
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struct ioh_gpio_reg_data ioh_gpio_reg;
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u32 gpio_use_sel;
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int ch;
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int irq_base;
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spinlock_t spinlock;
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};
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static const int num_ports[] = {6, 12, 16, 16, 15, 16, 16, 12};
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static void ioh_gpio_set(struct gpio_chip *gpio, unsigned nr, int val)
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{
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u32 reg_val;
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struct ioh_gpio *chip = gpiochip_get_data(gpio);
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unsigned long flags;
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spin_lock_irqsave(&chip->spinlock, flags);
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reg_val = ioread32(&chip->reg->regs[chip->ch].po);
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if (val)
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reg_val |= (1 << nr);
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else
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reg_val &= ~(1 << nr);
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iowrite32(reg_val, &chip->reg->regs[chip->ch].po);
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spin_unlock_irqrestore(&chip->spinlock, flags);
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}
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static int ioh_gpio_get(struct gpio_chip *gpio, unsigned nr)
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{
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struct ioh_gpio *chip = gpiochip_get_data(gpio);
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return !!(ioread32(&chip->reg->regs[chip->ch].pi) & (1 << nr));
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}
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static int ioh_gpio_direction_output(struct gpio_chip *gpio, unsigned nr,
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int val)
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{
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struct ioh_gpio *chip = gpiochip_get_data(gpio);
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u32 pm;
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u32 reg_val;
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unsigned long flags;
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spin_lock_irqsave(&chip->spinlock, flags);
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pm = ioread32(&chip->reg->regs[chip->ch].pm) &
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((1 << num_ports[chip->ch]) - 1);
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pm |= (1 << nr);
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iowrite32(pm, &chip->reg->regs[chip->ch].pm);
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reg_val = ioread32(&chip->reg->regs[chip->ch].po);
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if (val)
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reg_val |= (1 << nr);
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else
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reg_val &= ~(1 << nr);
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iowrite32(reg_val, &chip->reg->regs[chip->ch].po);
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spin_unlock_irqrestore(&chip->spinlock, flags);
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return 0;
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}
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static int ioh_gpio_direction_input(struct gpio_chip *gpio, unsigned nr)
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{
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struct ioh_gpio *chip = gpiochip_get_data(gpio);
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u32 pm;
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unsigned long flags;
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spin_lock_irqsave(&chip->spinlock, flags);
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pm = ioread32(&chip->reg->regs[chip->ch].pm) &
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((1 << num_ports[chip->ch]) - 1);
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pm &= ~(1 << nr);
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iowrite32(pm, &chip->reg->regs[chip->ch].pm);
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spin_unlock_irqrestore(&chip->spinlock, flags);
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return 0;
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}
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#ifdef CONFIG_PM
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/*
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* Save register configuration and disable interrupts.
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*/
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static void ioh_gpio_save_reg_conf(struct ioh_gpio *chip)
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{
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int i;
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for (i = 0; i < 8; i ++, chip++) {
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chip->ioh_gpio_reg.po_reg =
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ioread32(&chip->reg->regs[chip->ch].po);
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chip->ioh_gpio_reg.pm_reg =
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ioread32(&chip->reg->regs[chip->ch].pm);
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chip->ioh_gpio_reg.ien_reg =
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ioread32(&chip->reg->regs[chip->ch].ien);
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chip->ioh_gpio_reg.imask_reg =
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ioread32(&chip->reg->regs[chip->ch].imask);
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chip->ioh_gpio_reg.im0_reg =
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ioread32(&chip->reg->regs[chip->ch].im_0);
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chip->ioh_gpio_reg.im1_reg =
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ioread32(&chip->reg->regs[chip->ch].im_1);
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if (i < 4)
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chip->ioh_gpio_reg.use_sel_reg =
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ioread32(&chip->reg->ioh_sel_reg[i]);
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}
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}
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/*
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* This function restores the register configuration of the GPIO device.
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*/
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static void ioh_gpio_restore_reg_conf(struct ioh_gpio *chip)
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{
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int i;
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for (i = 0; i < 8; i ++, chip++) {
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iowrite32(chip->ioh_gpio_reg.po_reg,
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&chip->reg->regs[chip->ch].po);
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iowrite32(chip->ioh_gpio_reg.pm_reg,
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&chip->reg->regs[chip->ch].pm);
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iowrite32(chip->ioh_gpio_reg.ien_reg,
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&chip->reg->regs[chip->ch].ien);
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iowrite32(chip->ioh_gpio_reg.imask_reg,
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&chip->reg->regs[chip->ch].imask);
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iowrite32(chip->ioh_gpio_reg.im0_reg,
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&chip->reg->regs[chip->ch].im_0);
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iowrite32(chip->ioh_gpio_reg.im1_reg,
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&chip->reg->regs[chip->ch].im_1);
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if (i < 4)
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iowrite32(chip->ioh_gpio_reg.use_sel_reg,
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&chip->reg->ioh_sel_reg[i]);
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}
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}
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#endif
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static int ioh_gpio_to_irq(struct gpio_chip *gpio, unsigned offset)
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{
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struct ioh_gpio *chip = gpiochip_get_data(gpio);
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return chip->irq_base + offset;
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}
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static void ioh_gpio_setup(struct ioh_gpio *chip, int num_port)
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{
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struct gpio_chip *gpio = &chip->gpio;
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gpio->label = dev_name(chip->dev);
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gpio->owner = THIS_MODULE;
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gpio->direction_input = ioh_gpio_direction_input;
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gpio->get = ioh_gpio_get;
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gpio->direction_output = ioh_gpio_direction_output;
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gpio->set = ioh_gpio_set;
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gpio->dbg_show = NULL;
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gpio->base = -1;
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gpio->ngpio = num_port;
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gpio->can_sleep = false;
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gpio->to_irq = ioh_gpio_to_irq;
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}
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static int ioh_irq_type(struct irq_data *d, unsigned int type)
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{
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u32 im;
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void __iomem *im_reg;
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u32 ien;
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u32 im_pos;
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int ch;
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unsigned long flags;
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u32 val;
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int irq = d->irq;
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struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
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struct ioh_gpio *chip = gc->private;
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ch = irq - chip->irq_base;
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if (irq <= chip->irq_base + 7) {
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im_reg = &chip->reg->regs[chip->ch].im_0;
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im_pos = ch;
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} else {
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im_reg = &chip->reg->regs[chip->ch].im_1;
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im_pos = ch - 8;
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}
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dev_dbg(chip->dev, "%s:irq=%d type=%d ch=%d pos=%d type=%d\n",
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__func__, irq, type, ch, im_pos, type);
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spin_lock_irqsave(&chip->spinlock, flags);
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switch (type) {
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case IRQ_TYPE_EDGE_RISING:
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val = IOH_EDGE_RISING;
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break;
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case IRQ_TYPE_EDGE_FALLING:
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val = IOH_EDGE_FALLING;
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break;
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case IRQ_TYPE_EDGE_BOTH:
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val = IOH_EDGE_BOTH;
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break;
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case IRQ_TYPE_LEVEL_HIGH:
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val = IOH_LEVEL_H;
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break;
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case IRQ_TYPE_LEVEL_LOW:
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val = IOH_LEVEL_L;
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break;
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case IRQ_TYPE_PROBE:
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goto end;
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default:
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dev_warn(chip->dev, "%s: unknown type(%dd)",
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__func__, type);
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goto end;
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}
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/* Set interrupt mode */
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im = ioread32(im_reg) & ~(IOH_IM_MASK << (im_pos * 4));
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iowrite32(im | (val << (im_pos * 4)), im_reg);
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/* iclr */
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iowrite32(BIT(ch), &chip->reg->regs[chip->ch].iclr);
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/* IMASKCLR */
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iowrite32(BIT(ch), &chip->reg->regs[chip->ch].imaskclr);
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/* Enable interrupt */
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ien = ioread32(&chip->reg->regs[chip->ch].ien);
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iowrite32(ien | BIT(ch), &chip->reg->regs[chip->ch].ien);
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end:
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spin_unlock_irqrestore(&chip->spinlock, flags);
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return 0;
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}
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static void ioh_irq_unmask(struct irq_data *d)
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{
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struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
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struct ioh_gpio *chip = gc->private;
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iowrite32(1 << (d->irq - chip->irq_base),
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&chip->reg->regs[chip->ch].imaskclr);
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}
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static void ioh_irq_mask(struct irq_data *d)
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{
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struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
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struct ioh_gpio *chip = gc->private;
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iowrite32(1 << (d->irq - chip->irq_base),
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&chip->reg->regs[chip->ch].imask);
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}
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static void ioh_irq_disable(struct irq_data *d)
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{
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struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
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struct ioh_gpio *chip = gc->private;
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unsigned long flags;
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u32 ien;
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spin_lock_irqsave(&chip->spinlock, flags);
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ien = ioread32(&chip->reg->regs[chip->ch].ien);
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ien &= ~(1 << (d->irq - chip->irq_base));
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iowrite32(ien, &chip->reg->regs[chip->ch].ien);
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spin_unlock_irqrestore(&chip->spinlock, flags);
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}
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static void ioh_irq_enable(struct irq_data *d)
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{
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struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
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struct ioh_gpio *chip = gc->private;
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unsigned long flags;
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u32 ien;
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spin_lock_irqsave(&chip->spinlock, flags);
|
|
ien = ioread32(&chip->reg->regs[chip->ch].ien);
|
|
ien |= 1 << (d->irq - chip->irq_base);
|
|
iowrite32(ien, &chip->reg->regs[chip->ch].ien);
|
|
spin_unlock_irqrestore(&chip->spinlock, flags);
|
|
}
|
|
|
|
static irqreturn_t ioh_gpio_handler(int irq, void *dev_id)
|
|
{
|
|
struct ioh_gpio *chip = dev_id;
|
|
u32 reg_val;
|
|
int i, j;
|
|
int ret = IRQ_NONE;
|
|
|
|
for (i = 0; i < 8; i++, chip++) {
|
|
reg_val = ioread32(&chip->reg->regs[i].istatus);
|
|
for (j = 0; j < num_ports[i]; j++) {
|
|
if (reg_val & BIT(j)) {
|
|
dev_dbg(chip->dev,
|
|
"%s:[%d]:irq=%d status=0x%x\n",
|
|
__func__, j, irq, reg_val);
|
|
iowrite32(BIT(j),
|
|
&chip->reg->regs[chip->ch].iclr);
|
|
generic_handle_irq(chip->irq_base + j);
|
|
ret = IRQ_HANDLED;
|
|
}
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int ioh_gpio_alloc_generic_chip(struct ioh_gpio *chip,
|
|
unsigned int irq_start,
|
|
unsigned int num)
|
|
{
|
|
struct irq_chip_generic *gc;
|
|
struct irq_chip_type *ct;
|
|
int rv;
|
|
|
|
gc = devm_irq_alloc_generic_chip(chip->dev, "ioh_gpio", 1, irq_start,
|
|
chip->base, handle_simple_irq);
|
|
if (!gc)
|
|
return -ENOMEM;
|
|
|
|
gc->private = chip;
|
|
ct = gc->chip_types;
|
|
|
|
ct->chip.irq_mask = ioh_irq_mask;
|
|
ct->chip.irq_unmask = ioh_irq_unmask;
|
|
ct->chip.irq_set_type = ioh_irq_type;
|
|
ct->chip.irq_disable = ioh_irq_disable;
|
|
ct->chip.irq_enable = ioh_irq_enable;
|
|
|
|
rv = devm_irq_setup_generic_chip(chip->dev, gc, IRQ_MSK(num),
|
|
IRQ_GC_INIT_MASK_CACHE,
|
|
IRQ_NOREQUEST | IRQ_NOPROBE, 0);
|
|
|
|
return rv;
|
|
}
|
|
|
|
static int ioh_gpio_probe(struct pci_dev *pdev,
|
|
const struct pci_device_id *id)
|
|
{
|
|
int ret;
|
|
int i, j;
|
|
struct ioh_gpio *chip;
|
|
void __iomem *base;
|
|
void *chip_save;
|
|
int irq_base;
|
|
|
|
ret = pci_enable_device(pdev);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "%s : pci_enable_device failed", __func__);
|
|
goto err_pci_enable;
|
|
}
|
|
|
|
ret = pci_request_regions(pdev, KBUILD_MODNAME);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "pci_request_regions failed-%d", ret);
|
|
goto err_request_regions;
|
|
}
|
|
|
|
base = pci_iomap(pdev, 1, 0);
|
|
if (!base) {
|
|
dev_err(&pdev->dev, "%s : pci_iomap failed", __func__);
|
|
ret = -ENOMEM;
|
|
goto err_iomap;
|
|
}
|
|
|
|
chip_save = kcalloc(8, sizeof(*chip), GFP_KERNEL);
|
|
if (chip_save == NULL) {
|
|
ret = -ENOMEM;
|
|
goto err_kzalloc;
|
|
}
|
|
|
|
chip = chip_save;
|
|
for (i = 0; i < 8; i++, chip++) {
|
|
chip->dev = &pdev->dev;
|
|
chip->base = base;
|
|
chip->reg = chip->base;
|
|
chip->ch = i;
|
|
spin_lock_init(&chip->spinlock);
|
|
ioh_gpio_setup(chip, num_ports[i]);
|
|
ret = gpiochip_add_data(&chip->gpio, chip);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "IOH gpio: Failed to register GPIO\n");
|
|
goto err_gpiochip_add;
|
|
}
|
|
}
|
|
|
|
chip = chip_save;
|
|
for (j = 0; j < 8; j++, chip++) {
|
|
irq_base = devm_irq_alloc_descs(&pdev->dev, -1, IOH_IRQ_BASE,
|
|
num_ports[j], NUMA_NO_NODE);
|
|
if (irq_base < 0) {
|
|
dev_warn(&pdev->dev,
|
|
"ml_ioh_gpio: Failed to get IRQ base num\n");
|
|
ret = irq_base;
|
|
goto err_gpiochip_add;
|
|
}
|
|
chip->irq_base = irq_base;
|
|
|
|
ret = ioh_gpio_alloc_generic_chip(chip,
|
|
irq_base, num_ports[j]);
|
|
if (ret)
|
|
goto err_gpiochip_add;
|
|
}
|
|
|
|
chip = chip_save;
|
|
ret = devm_request_irq(&pdev->dev, pdev->irq, ioh_gpio_handler,
|
|
IRQF_SHARED, KBUILD_MODNAME, chip);
|
|
if (ret != 0) {
|
|
dev_err(&pdev->dev,
|
|
"%s request_irq failed\n", __func__);
|
|
goto err_gpiochip_add;
|
|
}
|
|
|
|
pci_set_drvdata(pdev, chip);
|
|
|
|
return 0;
|
|
|
|
err_gpiochip_add:
|
|
while (--i >= 0) {
|
|
chip--;
|
|
gpiochip_remove(&chip->gpio);
|
|
}
|
|
kfree(chip_save);
|
|
|
|
err_kzalloc:
|
|
pci_iounmap(pdev, base);
|
|
|
|
err_iomap:
|
|
pci_release_regions(pdev);
|
|
|
|
err_request_regions:
|
|
pci_disable_device(pdev);
|
|
|
|
err_pci_enable:
|
|
|
|
dev_err(&pdev->dev, "%s Failed returns %d\n", __func__, ret);
|
|
return ret;
|
|
}
|
|
|
|
static void ioh_gpio_remove(struct pci_dev *pdev)
|
|
{
|
|
int i;
|
|
struct ioh_gpio *chip = pci_get_drvdata(pdev);
|
|
void *chip_save;
|
|
|
|
chip_save = chip;
|
|
|
|
for (i = 0; i < 8; i++, chip++)
|
|
gpiochip_remove(&chip->gpio);
|
|
|
|
chip = chip_save;
|
|
pci_iounmap(pdev, chip->base);
|
|
pci_release_regions(pdev);
|
|
pci_disable_device(pdev);
|
|
kfree(chip);
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int ioh_gpio_suspend(struct pci_dev *pdev, pm_message_t state)
|
|
{
|
|
s32 ret;
|
|
struct ioh_gpio *chip = pci_get_drvdata(pdev);
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&chip->spinlock, flags);
|
|
ioh_gpio_save_reg_conf(chip);
|
|
spin_unlock_irqrestore(&chip->spinlock, flags);
|
|
|
|
ret = pci_save_state(pdev);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "pci_save_state Failed-%d\n", ret);
|
|
return ret;
|
|
}
|
|
pci_disable_device(pdev);
|
|
pci_set_power_state(pdev, PCI_D0);
|
|
ret = pci_enable_wake(pdev, PCI_D0, 1);
|
|
if (ret)
|
|
dev_err(&pdev->dev, "pci_enable_wake Failed -%d\n", ret);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ioh_gpio_resume(struct pci_dev *pdev)
|
|
{
|
|
s32 ret;
|
|
struct ioh_gpio *chip = pci_get_drvdata(pdev);
|
|
unsigned long flags;
|
|
|
|
ret = pci_enable_wake(pdev, PCI_D0, 0);
|
|
|
|
pci_set_power_state(pdev, PCI_D0);
|
|
ret = pci_enable_device(pdev);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "pci_enable_device Failed-%d ", ret);
|
|
return ret;
|
|
}
|
|
pci_restore_state(pdev);
|
|
|
|
spin_lock_irqsave(&chip->spinlock, flags);
|
|
iowrite32(0x01, &chip->reg->srst);
|
|
iowrite32(0x00, &chip->reg->srst);
|
|
ioh_gpio_restore_reg_conf(chip);
|
|
spin_unlock_irqrestore(&chip->spinlock, flags);
|
|
|
|
return 0;
|
|
}
|
|
#else
|
|
#define ioh_gpio_suspend NULL
|
|
#define ioh_gpio_resume NULL
|
|
#endif
|
|
|
|
static const struct pci_device_id ioh_gpio_pcidev_id[] = {
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_ROHM, 0x802E) },
|
|
{ 0, }
|
|
};
|
|
MODULE_DEVICE_TABLE(pci, ioh_gpio_pcidev_id);
|
|
|
|
static struct pci_driver ioh_gpio_driver = {
|
|
.name = "ml_ioh_gpio",
|
|
.id_table = ioh_gpio_pcidev_id,
|
|
.probe = ioh_gpio_probe,
|
|
.remove = ioh_gpio_remove,
|
|
.suspend = ioh_gpio_suspend,
|
|
.resume = ioh_gpio_resume
|
|
};
|
|
|
|
module_pci_driver(ioh_gpio_driver);
|
|
|
|
MODULE_DESCRIPTION("OKI SEMICONDUCTOR ML-IOH series GPIO Driver");
|
|
MODULE_LICENSE("GPL");
|