diff options
author | Olof Johansson <olof@lixom.net> | 2013-04-14 20:40:07 -0700 |
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committer | Olof Johansson <olof@lixom.net> | 2013-04-14 20:41:39 -0700 |
commit | 5ed3ebe3be1aa2afef203c40f11e732f0f343fb9 (patch) | |
tree | 906cd9ef3675cdfaddf52dcea93a067ac5ab0168 /drivers/gpio | |
parent | b9d5868e342a9802db7b299be511ac547ff1034d (diff) | |
parent | 641f71699ec96fb742cc891b9ea4f3a46c60050e (diff) | |
download | linux-5ed3ebe3be1aa2afef203c40f11e732f0f343fb9.tar.bz2 |
Merge tag 'msm-cleanup-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/davidb/linux-msm into next/cleanup
From David Brown:
Cleanups for MSM for 3.10
These are some patches for various parts of MSM that gradually bring
us closer to being part of single zimage.
* tag 'msm-cleanup-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/davidb/linux-msm:
ARM: msm: Remove unused cpu.h header file
gpio: Make gpio-msm-v1 into a platform driver
mmc: msm_sdcc: Remove unnecessary include
ARM: msm: Move dma.h #defines that are private to dma.c
Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'drivers/gpio')
-rw-r--r-- | drivers/gpio/gpio-msm-v1.c | 220 |
1 files changed, 149 insertions, 71 deletions
diff --git a/drivers/gpio/gpio-msm-v1.c b/drivers/gpio/gpio-msm-v1.c index 52a4d4286eba..c798585a3fe5 100644 --- a/drivers/gpio/gpio-msm-v1.c +++ b/drivers/gpio/gpio-msm-v1.c @@ -1,6 +1,6 @@ /* * Copyright (C) 2007 Google, Inc. - * Copyright (c) 2009-2011, Code Aurora Forum. All rights reserved. + * Copyright (c) 2009-2012, The Linux Foundation. All rights reserved. * * This software is licensed under the terms of the GNU General Public * License version 2, as published by the Free Software Foundation, and @@ -19,9 +19,10 @@ #include <linux/io.h> #include <linux/irq.h> #include <linux/module.h> -#include <mach/cpu.h> +#include <linux/device.h> +#include <linux/platform_device.h> + #include <mach/msm_gpiomux.h> -#include <mach/msm_iomap.h> /* see 80-VA736-2 Rev C pp 695-751 ** @@ -34,10 +35,10 @@ ** macros. */ -#define MSM_GPIO1_REG(off) (MSM_GPIO1_BASE + (off)) -#define MSM_GPIO2_REG(off) (MSM_GPIO2_BASE + 0x400 + (off)) -#define MSM_GPIO1_SHADOW_REG(off) (MSM_GPIO1_BASE + 0x800 + (off)) -#define MSM_GPIO2_SHADOW_REG(off) (MSM_GPIO2_BASE + 0xC00 + (off)) +#define MSM_GPIO1_REG(off) (off) +#define MSM_GPIO2_REG(off) (off) +#define MSM_GPIO1_SHADOW_REG(off) (off) +#define MSM_GPIO2_SHADOW_REG(off) (off) /* * MSM7X00 registers @@ -276,16 +277,14 @@ #define MSM_GPIO_BANK(soc, bank, first, last) \ { \ - .regs = { \ - .out = soc##_GPIO_OUT_##bank, \ - .in = soc##_GPIO_IN_##bank, \ - .int_status = soc##_GPIO_INT_STATUS_##bank, \ - .int_clear = soc##_GPIO_INT_CLEAR_##bank, \ - .int_en = soc##_GPIO_INT_EN_##bank, \ - .int_edge = soc##_GPIO_INT_EDGE_##bank, \ - .int_pos = soc##_GPIO_INT_POS_##bank, \ - .oe = soc##_GPIO_OE_##bank, \ - }, \ + .regs[MSM_GPIO_OUT] = soc##_GPIO_OUT_##bank, \ + .regs[MSM_GPIO_IN] = soc##_GPIO_IN_##bank, \ + .regs[MSM_GPIO_INT_STATUS] = soc##_GPIO_INT_STATUS_##bank, \ + .regs[MSM_GPIO_INT_CLEAR] = soc##_GPIO_INT_CLEAR_##bank, \ + .regs[MSM_GPIO_INT_EN] = soc##_GPIO_INT_EN_##bank, \ + .regs[MSM_GPIO_INT_EDGE] = soc##_GPIO_INT_EDGE_##bank, \ + .regs[MSM_GPIO_INT_POS] = soc##_GPIO_INT_POS_##bank, \ + .regs[MSM_GPIO_OE] = soc##_GPIO_OE_##bank, \ .chip = { \ .base = (first), \ .ngpio = (last) - (first) + 1, \ @@ -301,39 +300,57 @@ #define MSM_GPIO_BROKEN_INT_CLEAR 1 -struct msm_gpio_regs { - void __iomem *out; - void __iomem *in; - void __iomem *int_status; - void __iomem *int_clear; - void __iomem *int_en; - void __iomem *int_edge; - void __iomem *int_pos; - void __iomem *oe; +enum msm_gpio_reg { + MSM_GPIO_IN, + MSM_GPIO_OUT, + MSM_GPIO_INT_STATUS, + MSM_GPIO_INT_CLEAR, + MSM_GPIO_INT_EN, + MSM_GPIO_INT_EDGE, + MSM_GPIO_INT_POS, + MSM_GPIO_OE, + MSM_GPIO_REG_NR }; struct msm_gpio_chip { spinlock_t lock; struct gpio_chip chip; - struct msm_gpio_regs regs; + unsigned long regs[MSM_GPIO_REG_NR]; #if MSM_GPIO_BROKEN_INT_CLEAR unsigned int_status_copy; #endif unsigned int both_edge_detect; unsigned int int_enable[2]; /* 0: awake, 1: sleep */ + void __iomem *base; +}; + +struct msm_gpio_initdata { + struct msm_gpio_chip *chips; + int count; }; +static void msm_gpio_writel(struct msm_gpio_chip *chip, u32 val, + enum msm_gpio_reg reg) +{ + writel(val, chip->base + chip->regs[reg]); +} + +static u32 msm_gpio_readl(struct msm_gpio_chip *chip, enum msm_gpio_reg reg) +{ + return readl(chip->base + chip->regs[reg]); +} + static int msm_gpio_write(struct msm_gpio_chip *msm_chip, unsigned offset, unsigned on) { unsigned mask = BIT(offset); unsigned val; - val = readl(msm_chip->regs.out); + val = msm_gpio_readl(msm_chip, MSM_GPIO_OUT); if (on) - writel(val | mask, msm_chip->regs.out); + msm_gpio_writel(msm_chip, val | mask, MSM_GPIO_OUT); else - writel(val & ~mask, msm_chip->regs.out); + msm_gpio_writel(msm_chip, val & ~mask, MSM_GPIO_OUT); return 0; } @@ -342,13 +359,13 @@ static void msm_gpio_update_both_edge_detect(struct msm_gpio_chip *msm_chip) int loop_limit = 100; unsigned pol, val, val2, intstat; do { - val = readl(msm_chip->regs.in); - pol = readl(msm_chip->regs.int_pos); + val = msm_gpio_readl(msm_chip, MSM_GPIO_IN); + pol = msm_gpio_readl(msm_chip, MSM_GPIO_INT_POS); pol = (pol & ~msm_chip->both_edge_detect) | (~val & msm_chip->both_edge_detect); - writel(pol, msm_chip->regs.int_pos); - intstat = readl(msm_chip->regs.int_status); - val2 = readl(msm_chip->regs.in); + msm_gpio_writel(msm_chip, pol, MSM_GPIO_INT_POS); + intstat = msm_gpio_readl(msm_chip, MSM_GPIO_INT_STATUS); + val2 = msm_gpio_readl(msm_chip, MSM_GPIO_IN); if (((val ^ val2) & msm_chip->both_edge_detect & ~intstat) == 0) return; } while (loop_limit-- > 0); @@ -365,10 +382,11 @@ static int msm_gpio_clear_detect_status(struct msm_gpio_chip *msm_chip, /* Save interrupts that already triggered before we loose them. */ /* Any interrupt that triggers between the read of int_status */ /* and the write to int_clear will still be lost though. */ - msm_chip->int_status_copy |= readl(msm_chip->regs.int_status); + msm_chip->int_status_copy |= + msm_gpio_readl(msm_chip, MSM_GPIO_INT_STATUS); msm_chip->int_status_copy &= ~bit; #endif - writel(bit, msm_chip->regs.int_clear); + msm_gpio_writel(msm_chip, bit, MSM_GPIO_INT_CLEAR); msm_gpio_update_both_edge_detect(msm_chip); return 0; } @@ -377,10 +395,12 @@ static int msm_gpio_direction_input(struct gpio_chip *chip, unsigned offset) { struct msm_gpio_chip *msm_chip; unsigned long irq_flags; + u32 val; msm_chip = container_of(chip, struct msm_gpio_chip, chip); spin_lock_irqsave(&msm_chip->lock, irq_flags); - writel(readl(msm_chip->regs.oe) & ~BIT(offset), msm_chip->regs.oe); + val = msm_gpio_readl(msm_chip, MSM_GPIO_OE) & ~BIT(offset); + msm_gpio_writel(msm_chip, val, MSM_GPIO_OE); spin_unlock_irqrestore(&msm_chip->lock, irq_flags); return 0; } @@ -390,11 +410,13 @@ msm_gpio_direction_output(struct gpio_chip *chip, unsigned offset, int value) { struct msm_gpio_chip *msm_chip; unsigned long irq_flags; + u32 val; msm_chip = container_of(chip, struct msm_gpio_chip, chip); spin_lock_irqsave(&msm_chip->lock, irq_flags); msm_gpio_write(msm_chip, offset, value); - writel(readl(msm_chip->regs.oe) | BIT(offset), msm_chip->regs.oe); + val = msm_gpio_readl(msm_chip, MSM_GPIO_OE) | BIT(offset); + msm_gpio_writel(msm_chip, val, MSM_GPIO_OE); spin_unlock_irqrestore(&msm_chip->lock, irq_flags); return 0; } @@ -404,7 +426,7 @@ static int msm_gpio_get(struct gpio_chip *chip, unsigned offset) struct msm_gpio_chip *msm_chip; msm_chip = container_of(chip, struct msm_gpio_chip, chip); - return (readl(msm_chip->regs.in) & (1U << offset)) ? 1 : 0; + return (msm_gpio_readl(msm_chip, MSM_GPIO_IN) & (1U << offset)) ? 1 : 0; } static void msm_gpio_set(struct gpio_chip *chip, unsigned offset, int value) @@ -450,6 +472,11 @@ static struct msm_gpio_chip msm_gpio_chips_msm7x01[] = { MSM_GPIO_BANK(MSM7X00, 5, 107, 121), }; +static struct msm_gpio_initdata msm_gpio_7x01_init = { + .chips = msm_gpio_chips_msm7x01, + .count = ARRAY_SIZE(msm_gpio_chips_msm7x01), +}; + static struct msm_gpio_chip msm_gpio_chips_msm7x30[] = { MSM_GPIO_BANK(MSM7X30, 0, 0, 15), MSM_GPIO_BANK(MSM7X30, 1, 16, 43), @@ -461,6 +488,11 @@ static struct msm_gpio_chip msm_gpio_chips_msm7x30[] = { MSM_GPIO_BANK(MSM7X30, 7, 151, 181), }; +static struct msm_gpio_initdata msm_gpio_7x30_init = { + .chips = msm_gpio_chips_msm7x30, + .count = ARRAY_SIZE(msm_gpio_chips_msm7x30), +}; + static struct msm_gpio_chip msm_gpio_chips_qsd8x50[] = { MSM_GPIO_BANK(QSD8X50, 0, 0, 15), MSM_GPIO_BANK(QSD8X50, 1, 16, 42), @@ -472,6 +504,11 @@ static struct msm_gpio_chip msm_gpio_chips_qsd8x50[] = { MSM_GPIO_BANK(QSD8X50, 7, 153, 164), }; +static struct msm_gpio_initdata msm_gpio_8x50_init = { + .chips = msm_gpio_chips_qsd8x50, + .count = ARRAY_SIZE(msm_gpio_chips_qsd8x50), +}; + static void msm_gpio_irq_ack(struct irq_data *d) { unsigned long irq_flags; @@ -490,10 +527,10 @@ static void msm_gpio_irq_mask(struct irq_data *d) spin_lock_irqsave(&msm_chip->lock, irq_flags); /* level triggered interrupts are also latched */ - if (!(readl(msm_chip->regs.int_edge) & BIT(offset))) + if (!(msm_gpio_readl(msm_chip, MSM_GPIO_INT_EDGE) & BIT(offset))) msm_gpio_clear_detect_status(msm_chip, offset); msm_chip->int_enable[0] &= ~BIT(offset); - writel(msm_chip->int_enable[0], msm_chip->regs.int_en); + msm_gpio_writel(msm_chip, msm_chip->int_enable[0], MSM_GPIO_INT_EN); spin_unlock_irqrestore(&msm_chip->lock, irq_flags); } @@ -505,10 +542,10 @@ static void msm_gpio_irq_unmask(struct irq_data *d) spin_lock_irqsave(&msm_chip->lock, irq_flags); /* level triggered interrupts are also latched */ - if (!(readl(msm_chip->regs.int_edge) & BIT(offset))) + if (!(msm_gpio_readl(msm_chip, MSM_GPIO_INT_EDGE) & BIT(offset))) msm_gpio_clear_detect_status(msm_chip, offset); msm_chip->int_enable[0] |= BIT(offset); - writel(msm_chip->int_enable[0], msm_chip->regs.int_en); + msm_gpio_writel(msm_chip, msm_chip->int_enable[0], MSM_GPIO_INT_EN); spin_unlock_irqrestore(&msm_chip->lock, irq_flags); } @@ -537,12 +574,12 @@ static int msm_gpio_irq_set_type(struct irq_data *d, unsigned int flow_type) unsigned val, mask = BIT(offset); spin_lock_irqsave(&msm_chip->lock, irq_flags); - val = readl(msm_chip->regs.int_edge); + val = msm_gpio_readl(msm_chip, MSM_GPIO_INT_EDGE); if (flow_type & IRQ_TYPE_EDGE_BOTH) { - writel(val | mask, msm_chip->regs.int_edge); + msm_gpio_writel(msm_chip, val | mask, MSM_GPIO_INT_EDGE); __irq_set_handler_locked(d->irq, handle_edge_irq); } else { - writel(val & ~mask, msm_chip->regs.int_edge); + msm_gpio_writel(msm_chip, val & ~mask, MSM_GPIO_INT_EDGE); __irq_set_handler_locked(d->irq, handle_level_irq); } if ((flow_type & IRQ_TYPE_EDGE_BOTH) == IRQ_TYPE_EDGE_BOTH) { @@ -550,11 +587,12 @@ static int msm_gpio_irq_set_type(struct irq_data *d, unsigned int flow_type) msm_gpio_update_both_edge_detect(msm_chip); } else { msm_chip->both_edge_detect &= ~mask; - val = readl(msm_chip->regs.int_pos); + val = msm_gpio_readl(msm_chip, MSM_GPIO_INT_POS); if (flow_type & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_HIGH)) - writel(val | mask, msm_chip->regs.int_pos); + val |= mask; else - writel(val & ~mask, msm_chip->regs.int_pos); + val &= ~mask; + msm_gpio_writel(msm_chip, val, MSM_GPIO_INT_POS); } spin_unlock_irqrestore(&msm_chip->lock, irq_flags); return 0; @@ -567,7 +605,7 @@ static void msm_gpio_irq_handler(unsigned int irq, struct irq_desc *desc) for (i = 0; i < msm_gpio_count; i++) { struct msm_gpio_chip *msm_chip = &msm_gpio_chips[i]; - val = readl(msm_chip->regs.int_status); + val = msm_gpio_readl(msm_chip, MSM_GPIO_INT_STATUS); val &= msm_chip->int_enable[0]; while (val) { mask = val & -val; @@ -592,22 +630,36 @@ static struct irq_chip msm_gpio_irq_chip = { .irq_set_type = msm_gpio_irq_set_type, }; -static int __init msm_init_gpio(void) +static int __devinit gpio_msm_v1_probe(struct platform_device *pdev) { int i, j = 0; - - if (cpu_is_msm7x01()) { - msm_gpio_chips = msm_gpio_chips_msm7x01; - msm_gpio_count = ARRAY_SIZE(msm_gpio_chips_msm7x01); - } else if (cpu_is_msm7x30()) { - msm_gpio_chips = msm_gpio_chips_msm7x30; - msm_gpio_count = ARRAY_SIZE(msm_gpio_chips_msm7x30); - } else if (cpu_is_qsd8x50()) { - msm_gpio_chips = msm_gpio_chips_qsd8x50; - msm_gpio_count = ARRAY_SIZE(msm_gpio_chips_qsd8x50); - } else { - return 0; - } + const struct platform_device_id *dev_id = platform_get_device_id(pdev); + struct msm_gpio_initdata *data; + int irq1, irq2; + struct resource *res; + void __iomem *base1, __iomem *base2; + + data = (struct msm_gpio_initdata *)dev_id->driver_data; + msm_gpio_chips = data->chips; + msm_gpio_count = data->count; + + irq1 = platform_get_irq(pdev, 0); + if (irq1 < 0) + return irq1; + + irq2 = platform_get_irq(pdev, 1); + if (irq2 < 0) + return irq2; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + base1 = devm_request_and_ioremap(&pdev->dev, res); + if (!base1) + return -EADDRNOTAVAIL; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + base2 = devm_request_and_ioremap(&pdev->dev, res); + if (!base2) + return -EADDRNOTAVAIL; for (i = FIRST_GPIO_IRQ; i < FIRST_GPIO_IRQ + NR_GPIO_IRQS; i++) { if (i - FIRST_GPIO_IRQ >= @@ -621,16 +673,42 @@ static int __init msm_init_gpio(void) } for (i = 0; i < msm_gpio_count; i++) { + if (i == 1) + msm_gpio_chips[i].base = base2; + else + msm_gpio_chips[i].base = base1; spin_lock_init(&msm_gpio_chips[i].lock); - writel(0, msm_gpio_chips[i].regs.int_en); + msm_gpio_writel(&msm_gpio_chips[i], 0, MSM_GPIO_INT_EN); gpiochip_add(&msm_gpio_chips[i].chip); } - irq_set_chained_handler(INT_GPIO_GROUP1, msm_gpio_irq_handler); - irq_set_chained_handler(INT_GPIO_GROUP2, msm_gpio_irq_handler); - irq_set_irq_wake(INT_GPIO_GROUP1, 1); - irq_set_irq_wake(INT_GPIO_GROUP2, 2); + irq_set_chained_handler(irq1, msm_gpio_irq_handler); + irq_set_chained_handler(irq2, msm_gpio_irq_handler); + irq_set_irq_wake(irq1, 1); + irq_set_irq_wake(irq2, 2); return 0; } -postcore_initcall(msm_init_gpio); +static struct platform_device_id gpio_msm_v1_device_ids[] = { + { "gpio-msm-7201", (unsigned long)&msm_gpio_7x01_init }, + { "gpio-msm-7x30", (unsigned long)&msm_gpio_7x30_init }, + { "gpio-msm-8x50", (unsigned long)&msm_gpio_8x50_init }, + { } +}; +MODULE_DEVICE_TABLE(platform, gpio_msm_v1_device_ids); + +static struct platform_driver gpio_msm_v1_driver = { + .driver = { + .name = "gpio-msm-v1", + .owner = THIS_MODULE, + }, + .probe = gpio_msm_v1_probe, + .id_table = gpio_msm_v1_device_ids, +}; + +static int __init gpio_msm_v1_init(void) +{ + return platform_driver_register(&gpio_msm_v1_driver); +} +postcore_initcall(gpio_msm_v1_init); +MODULE_LICENSE("GPL v2"); |