diff options
Diffstat (limited to 'target/linux/mvebu/patches-3.18/198-gpio_mvebu_suspend.patch')
| -rw-r--r-- | target/linux/mvebu/patches-3.18/198-gpio_mvebu_suspend.patch | 137 |
1 files changed, 0 insertions, 137 deletions
diff --git a/target/linux/mvebu/patches-3.18/198-gpio_mvebu_suspend.patch b/target/linux/mvebu/patches-3.18/198-gpio_mvebu_suspend.patch deleted file mode 100644 index 9ef1815035..0000000000 --- a/target/linux/mvebu/patches-3.18/198-gpio_mvebu_suspend.patch +++ /dev/null @@ -1,137 +0,0 @@ -This commit adds the implementation of ->suspend() and ->resume() -platform_driver hooks in order to save and restore the state of the -GPIO configuration. In order to achieve that, additional fields are -added to the mvebu_gpio_chip structure. - -Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> -Acked-by: Alexandre Courbot <acourbot@nvidia.com> -Signed-off-by: Linus Walleij <linus.walleij@linaro.org> - ---- a/drivers/gpio/gpio-mvebu.c -+++ b/drivers/gpio/gpio-mvebu.c -@@ -83,6 +83,14 @@ struct mvebu_gpio_chip { - int irqbase; - struct irq_domain *domain; - int soc_variant; -+ -+ /* Used to preserve GPIO registers accross suspend/resume */ -+ u32 out_reg; -+ u32 io_conf_reg; -+ u32 blink_en_reg; -+ u32 in_pol_reg; -+ u32 edge_mask_regs[4]; -+ u32 level_mask_regs[4]; - }; - - /* -@@ -562,6 +570,93 @@ static const struct of_device_id mvebu_g - }; - MODULE_DEVICE_TABLE(of, mvebu_gpio_of_match); - -+static int mvebu_gpio_suspend(struct platform_device *pdev, pm_message_t state) -+{ -+ struct mvebu_gpio_chip *mvchip = platform_get_drvdata(pdev); -+ int i; -+ -+ mvchip->out_reg = readl(mvebu_gpioreg_out(mvchip)); -+ mvchip->io_conf_reg = readl(mvebu_gpioreg_io_conf(mvchip)); -+ mvchip->blink_en_reg = readl(mvebu_gpioreg_blink(mvchip)); -+ mvchip->in_pol_reg = readl(mvebu_gpioreg_in_pol(mvchip)); -+ -+ switch (mvchip->soc_variant) { -+ case MVEBU_GPIO_SOC_VARIANT_ORION: -+ mvchip->edge_mask_regs[0] = -+ readl(mvchip->membase + GPIO_EDGE_MASK_OFF); -+ mvchip->level_mask_regs[0] = -+ readl(mvchip->membase + GPIO_LEVEL_MASK_OFF); -+ break; -+ case MVEBU_GPIO_SOC_VARIANT_MV78200: -+ for (i = 0; i < 2; i++) { -+ mvchip->edge_mask_regs[i] = -+ readl(mvchip->membase + -+ GPIO_EDGE_MASK_MV78200_OFF(i)); -+ mvchip->level_mask_regs[i] = -+ readl(mvchip->membase + -+ GPIO_LEVEL_MASK_MV78200_OFF(i)); -+ } -+ break; -+ case MVEBU_GPIO_SOC_VARIANT_ARMADAXP: -+ for (i = 0; i < 4; i++) { -+ mvchip->edge_mask_regs[i] = -+ readl(mvchip->membase + -+ GPIO_EDGE_MASK_ARMADAXP_OFF(i)); -+ mvchip->level_mask_regs[i] = -+ readl(mvchip->membase + -+ GPIO_LEVEL_MASK_ARMADAXP_OFF(i)); -+ } -+ break; -+ default: -+ BUG(); -+ } -+ -+ return 0; -+} -+ -+static int mvebu_gpio_resume(struct platform_device *pdev) -+{ -+ struct mvebu_gpio_chip *mvchip = platform_get_drvdata(pdev); -+ int i; -+ -+ writel(mvchip->out_reg, mvebu_gpioreg_out(mvchip)); -+ writel(mvchip->io_conf_reg, mvebu_gpioreg_io_conf(mvchip)); -+ writel(mvchip->blink_en_reg, mvebu_gpioreg_blink(mvchip)); -+ writel(mvchip->in_pol_reg, mvebu_gpioreg_in_pol(mvchip)); -+ -+ switch (mvchip->soc_variant) { -+ case MVEBU_GPIO_SOC_VARIANT_ORION: -+ writel(mvchip->edge_mask_regs[0], -+ mvchip->membase + GPIO_EDGE_MASK_OFF); -+ writel(mvchip->level_mask_regs[0], -+ mvchip->membase + GPIO_LEVEL_MASK_OFF); -+ break; -+ case MVEBU_GPIO_SOC_VARIANT_MV78200: -+ for (i = 0; i < 2; i++) { -+ writel(mvchip->edge_mask_regs[i], -+ mvchip->membase + GPIO_EDGE_MASK_MV78200_OFF(i)); -+ writel(mvchip->level_mask_regs[i], -+ mvchip->membase + -+ GPIO_LEVEL_MASK_MV78200_OFF(i)); -+ } -+ break; -+ case MVEBU_GPIO_SOC_VARIANT_ARMADAXP: -+ for (i = 0; i < 4; i++) { -+ writel(mvchip->edge_mask_regs[i], -+ mvchip->membase + -+ GPIO_EDGE_MASK_ARMADAXP_OFF(i)); -+ writel(mvchip->level_mask_regs[i], -+ mvchip->membase + -+ GPIO_LEVEL_MASK_ARMADAXP_OFF(i)); -+ } -+ break; -+ default: -+ BUG(); -+ } -+ -+ return 0; -+} -+ - static int mvebu_gpio_probe(struct platform_device *pdev) - { - struct mvebu_gpio_chip *mvchip; -@@ -585,6 +680,8 @@ static int mvebu_gpio_probe(struct platf - if (!mvchip) - return -ENOMEM; - -+ platform_set_drvdata(pdev, mvchip); -+ - if (of_property_read_u32(pdev->dev.of_node, "ngpios", &ngpios)) { - dev_err(&pdev->dev, "Missing ngpios OF property\n"); - return -ENODEV; -@@ -743,5 +840,7 @@ static struct platform_driver mvebu_gpio - .of_match_table = mvebu_gpio_of_match, - }, - .probe = mvebu_gpio_probe, -+ .suspend = mvebu_gpio_suspend, -+ .resume = mvebu_gpio_resume, - }; - module_platform_driver(mvebu_gpio_driver); |