gpio: samsung: refactor gpiolib init for exynos4/5

Only code move, no functional change.

Main reason to do this was to get rid of the warnings:

drivers/gpio/gpio-samsung.c: In function 'samsung_gpiolib_init':
drivers/gpio/gpio-samsung.c:2974:1: warning: label 'err_ioremap4' defined but not used [-Wunused-label]
drivers/gpio/gpio-samsung.c:2722:47: warning: unused variable 'gpio_base4' [-Wunused-variable]

without adding more ifdef mess.

I think this whole file would do well being coverted over to a platform
driver and moving most of the tables out to SoC code and/or device trees,
but since that changes init ordering it needs to be done with some care,
i.e. not at this time.

Signed-off-by: Olof Johansson <olof@lixom.net>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

1 files changed, 215 insertions, 188 deletions

diff --git a/drivers/gpio/gpio-samsung.c b/drivers/gpio/gpio-samsung.c
index 19d6fc0229c3..5d49aff3bb9e 100644
--- a/drivers/gpio/gpio-samsung.c
+++ b/drivers/gpio/gpio-samsung.c
@@ -2714,12 +2714,224 @@ static __init void exynos_gpiolib_attach_ofnode(struct samsung_gpio_chip *chip,
 }
 #endif /* defined(CONFIG_ARCH_EXYNOS) && defined(CONFIG_OF) */
 
+static __init void exynos4_gpiolib_init(void)
+{
+#ifdef CONFIG_CPU_EXYNOS4210
+        struct samsung_gpio_chip *chip;
+        int i, nr_chips;
+        void __iomem *gpio_base1, *gpio_base2, *gpio_base3;
+        int group = 0;
+        void __iomem *gpx_base;
+
+        /* gpio part1 */
+        gpio_base1 = ioremap(EXYNOS4_PA_GPIO1, SZ_4K);
+        if (gpio_base1 == NULL) {
+                pr_err("unable to ioremap for gpio_base1\n");
+                goto err_ioremap1;
+        }
+
+        chip = exynos4_gpios_1;
+        nr_chips = ARRAY_SIZE(exynos4_gpios_1);
+
+        for (i = 0; i < nr_chips; i++, chip++) {
+                if (!chip->config) {
+                        chip->config = &exynos_gpio_cfg;
+                        chip->group = group++;
+                }
+                exynos_gpiolib_attach_ofnode(chip,
+                                EXYNOS4_PA_GPIO1, i * 0x20);
+        }
+        samsung_gpiolib_add_4bit_chips(exynos4_gpios_1,
+                                       nr_chips, gpio_base1);
+
+        /* gpio part2 */
+        gpio_base2 = ioremap(EXYNOS4_PA_GPIO2, SZ_4K);
+        if (gpio_base2 == NULL) {
+                pr_err("unable to ioremap for gpio_base2\n");
+                goto err_ioremap2;
+        }
+
+        /* need to set base address for gpx */
+        chip = &exynos4_gpios_2[16];
+        gpx_base = gpio_base2 + 0xC00;
+        for (i = 0; i < 4; i++, chip++, gpx_base += 0x20)
+                chip->base = gpx_base;
+
+        chip = exynos4_gpios_2;
+        nr_chips = ARRAY_SIZE(exynos4_gpios_2);
+
+        for (i = 0; i < nr_chips; i++, chip++) {
+                if (!chip->config) {
+                        chip->config = &exynos_gpio_cfg;
+                        chip->group = group++;
+                }
+                exynos_gpiolib_attach_ofnode(chip,
+                                EXYNOS4_PA_GPIO2, i * 0x20);
+        }
+        samsung_gpiolib_add_4bit_chips(exynos4_gpios_2,
+                                       nr_chips, gpio_base2);
+
+        /* gpio part3 */
+        gpio_base3 = ioremap(EXYNOS4_PA_GPIO3, SZ_256);
+        if (gpio_base3 == NULL) {
+                pr_err("unable to ioremap for gpio_base3\n");
+                goto err_ioremap3;
+        }
+
+        chip = exynos4_gpios_3;
+        nr_chips = ARRAY_SIZE(exynos4_gpios_3);
+
+        for (i = 0; i < nr_chips; i++, chip++) {
+                if (!chip->config) {
+                        chip->config = &exynos_gpio_cfg;
+                        chip->group = group++;
+                }
+                exynos_gpiolib_attach_ofnode(chip,
+                                EXYNOS4_PA_GPIO3, i * 0x20);
+        }
+        samsung_gpiolib_add_4bit_chips(exynos4_gpios_3,
+                                       nr_chips, gpio_base3);
+
+#if defined(CONFIG_CPU_EXYNOS4210) && defined(CONFIG_S5P_GPIO_INT)
+        s5p_register_gpioint_bank(IRQ_GPIO_XA, 0, IRQ_GPIO1_NR_GROUPS);
+        s5p_register_gpioint_bank(IRQ_GPIO_XB, IRQ_GPIO1_NR_GROUPS, IRQ_GPIO2_NR_GROUPS);
+#endif
+
+        return;
+
+err_ioremap3:
+        iounmap(gpio_base2);
+err_ioremap2:
+        iounmap(gpio_base1);
+err_ioremap1:
+        return;
+#endif  /* CONFIG_CPU_EXYNOS4210 */
+}
+
+static __init void exynos5_gpiolib_init(void)
+{
+#ifdef CONFIG_SOC_EXYNOS5250
+        struct samsung_gpio_chip *chip;
+        int i, nr_chips;
+        void __iomem *gpio_base1, *gpio_base2, *gpio_base3, *gpio_base4;
+        int group = 0;
+        void __iomem *gpx_base;
+
+        /* gpio part1 */
+        gpio_base1 = ioremap(EXYNOS5_PA_GPIO1, SZ_4K);
+        if (gpio_base1 == NULL) {
+                pr_err("unable to ioremap for gpio_base1\n");
+                goto err_ioremap1;
+        }
+
+        /* need to set base address for gpx */
+        chip = &exynos5_gpios_1[20];
+        gpx_base = gpio_base1 + 0xC00;
+        for (i = 0; i < 4; i++, chip++, gpx_base += 0x20)
+                chip->base = gpx_base;
+
+        chip = exynos5_gpios_1;
+        nr_chips = ARRAY_SIZE(exynos5_gpios_1);
+
+        for (i = 0; i < nr_chips; i++, chip++) {
+                if (!chip->config) {
+                        chip->config = &exynos_gpio_cfg;
+                        chip->group = group++;
+                }
+                exynos_gpiolib_attach_ofnode(chip,
+                                EXYNOS5_PA_GPIO1, i * 0x20);
+        }
+        samsung_gpiolib_add_4bit_chips(exynos5_gpios_1,
+                                       nr_chips, gpio_base1);
+
+        /* gpio part2 */
+        gpio_base2 = ioremap(EXYNOS5_PA_GPIO2, SZ_4K);
+        if (gpio_base2 == NULL) {
+                pr_err("unable to ioremap for gpio_base2\n");
+                goto err_ioremap2;
+        }
+
+        chip = exynos5_gpios_2;
+        nr_chips = ARRAY_SIZE(exynos5_gpios_2);
+
+        for (i = 0; i < nr_chips; i++, chip++) {
+                if (!chip->config) {
+                        chip->config = &exynos_gpio_cfg;
+                        chip->group = group++;
+                }
+                exynos_gpiolib_attach_ofnode(chip,
+                                EXYNOS5_PA_GPIO2, i * 0x20);
+        }
+        samsung_gpiolib_add_4bit_chips(exynos5_gpios_2,
+                                       nr_chips, gpio_base2);
+
+        /* gpio part3 */
+        gpio_base3 = ioremap(EXYNOS5_PA_GPIO3, SZ_4K);
+        if (gpio_base3 == NULL) {
+                pr_err("unable to ioremap for gpio_base3\n");
+                goto err_ioremap3;
+        }
+
+        /* need to set base address for gpv */
+        exynos5_gpios_3[0].base = gpio_base3;
+        exynos5_gpios_3[1].base = gpio_base3 + 0x20;
+        exynos5_gpios_3[2].base = gpio_base3 + 0x60;
+        exynos5_gpios_3[3].base = gpio_base3 + 0x80;
+        exynos5_gpios_3[4].base = gpio_base3 + 0xC0;
+
+        chip = exynos5_gpios_3;
+        nr_chips = ARRAY_SIZE(exynos5_gpios_3);
+
+        for (i = 0; i < nr_chips; i++, chip++) {
+                if (!chip->config) {
+                        chip->config = &exynos_gpio_cfg;
+                        chip->group = group++;
+                }
+                exynos_gpiolib_attach_ofnode(chip,
+                                EXYNOS5_PA_GPIO3, i * 0x20);
+        }
+        samsung_gpiolib_add_4bit_chips(exynos5_gpios_3,
+                                       nr_chips, gpio_base3);
+
+        /* gpio part4 */
+        gpio_base4 = ioremap(EXYNOS5_PA_GPIO4, SZ_4K);
+        if (gpio_base4 == NULL) {
+                pr_err("unable to ioremap for gpio_base4\n");
+                goto err_ioremap4;
+        }
+
+        chip = exynos5_gpios_4;
+        nr_chips = ARRAY_SIZE(exynos5_gpios_4);
+
+        for (i = 0; i < nr_chips; i++, chip++) {
+                if (!chip->config) {
+                        chip->config = &exynos_gpio_cfg;
+                        chip->group = group++;
+                }
+                exynos_gpiolib_attach_ofnode(chip,
+                                EXYNOS5_PA_GPIO4, i * 0x20);
+        }
+        samsung_gpiolib_add_4bit_chips(exynos5_gpios_4,
+                                       nr_chips, gpio_base4);
+        return;
+
+err_ioremap4:
+        iounmap(gpio_base3);
+err_ioremap3:
+        iounmap(gpio_base2);
+err_ioremap2:
+        iounmap(gpio_base1);
+err_ioremap1:
+        return;
+
+#endif  /* CONFIG_SOC_EXYNOS5250 */
+}
+
 /* TODO: cleanup soc_is_* */
 static __init int samsung_gpiolib_init(void)
 {
         struct samsung_gpio_chip *chip;
         int i, nr_chips;
-        void __iomem *gpio_base1, *gpio_base2, *gpio_base3, *gpio_base4;
         int group = 0;
 
         samsung_gpiolib_set_cfg(samsung_gpio_cfgs, ARRAY_SIZE(samsung_gpio_cfgs));
@@ -2785,200 +2997,15 @@ static __init int samsung_gpiolib_init(void)
                 s5p_register_gpioint_bank(IRQ_GPIOINT, 0, S5P_GPIOINT_GROUP_MAXNR);
 #endif
         } else if (soc_is_exynos4210()) {
-#ifdef CONFIG_CPU_EXYNOS4210
-                void __iomem *gpx_base;
-
-                /* gpio part1 */
-                gpio_base1 = ioremap(EXYNOS4_PA_GPIO1, SZ_4K);
-                if (gpio_base1 == NULL) {
-                        pr_err("unable to ioremap for gpio_base1\n");
-                        goto err_ioremap1;
-                }
-
-                chip = exynos4_gpios_1;
-                nr_chips = ARRAY_SIZE(exynos4_gpios_1);
-
-                for (i = 0; i < nr_chips; i++, chip++) {
-                        if (!chip->config) {
-                                chip->config = &exynos_gpio_cfg;
-                                chip->group = group++;
-                        }
-                        exynos_gpiolib_attach_ofnode(chip,
-                                        EXYNOS4_PA_GPIO1, i * 0x20);
-                }
-                samsung_gpiolib_add_4bit_chips(exynos4_gpios_1,
-                                               nr_chips, gpio_base1);
-
-                /* gpio part2 */
-                gpio_base2 = ioremap(EXYNOS4_PA_GPIO2, SZ_4K);
-                if (gpio_base2 == NULL) {
-                        pr_err("unable to ioremap for gpio_base2\n");
-                        goto err_ioremap2;
-                }
-
-                /* need to set base address for gpx */
-                chip = &exynos4_gpios_2[16];
-                gpx_base = gpio_base2 + 0xC00;
-                for (i = 0; i < 4; i++, chip++, gpx_base += 0x20)
-                        chip->base = gpx_base;
-
-                chip = exynos4_gpios_2;
-                nr_chips = ARRAY_SIZE(exynos4_gpios_2);
-
-                for (i = 0; i < nr_chips; i++, chip++) {
-                        if (!chip->config) {
-                                chip->config = &exynos_gpio_cfg;
-                                chip->group = group++;
-                        }
-                        exynos_gpiolib_attach_ofnode(chip,
-                                        EXYNOS4_PA_GPIO2, i * 0x20);
-                }
-                samsung_gpiolib_add_4bit_chips(exynos4_gpios_2,
-                                               nr_chips, gpio_base2);
-
-                /* gpio part3 */
-                gpio_base3 = ioremap(EXYNOS4_PA_GPIO3, SZ_256);
-                if (gpio_base3 == NULL) {
-                        pr_err("unable to ioremap for gpio_base3\n");
-                        goto err_ioremap3;
-                }
-
-                chip = exynos4_gpios_3;
-                nr_chips = ARRAY_SIZE(exynos4_gpios_3);
-
-                for (i = 0; i < nr_chips; i++, chip++) {
-                        if (!chip->config) {
-                                chip->config = &exynos_gpio_cfg;
-                                chip->group = group++;
-                        }
-                        exynos_gpiolib_attach_ofnode(chip,
-                                        EXYNOS4_PA_GPIO3, i * 0x20);
-                }
-                samsung_gpiolib_add_4bit_chips(exynos4_gpios_3,
-                                               nr_chips, gpio_base3);
-
-#if defined(CONFIG_CPU_EXYNOS4210) && defined(CONFIG_S5P_GPIO_INT)
-                s5p_register_gpioint_bank(IRQ_GPIO_XA, 0, IRQ_GPIO1_NR_GROUPS);
-                s5p_register_gpioint_bank(IRQ_GPIO_XB, IRQ_GPIO1_NR_GROUPS, IRQ_GPIO2_NR_GROUPS);
-#endif
-
-#endif  /* CONFIG_CPU_EXYNOS4210 */
+                exynos4_gpiolib_init();
         } else if (soc_is_exynos5250()) {
-#ifdef CONFIG_SOC_EXYNOS5250
-                void __iomem *gpx_base;
-
-                /* gpio part1 */
-                gpio_base1 = ioremap(EXYNOS5_PA_GPIO1, SZ_4K);
-                if (gpio_base1 == NULL) {
-                        pr_err("unable to ioremap for gpio_base1\n");
-                        goto err_ioremap1;
-                }
-
-                /* need to set base address for gpx */
-                chip = &exynos5_gpios_1[20];
-                gpx_base = gpio_base1 + 0xC00;
-                for (i = 0; i < 4; i++, chip++, gpx_base += 0x20)
-                        chip->base = gpx_base;
-
-                chip = exynos5_gpios_1;
-                nr_chips = ARRAY_SIZE(exynos5_gpios_1);
-
-                for (i = 0; i < nr_chips; i++, chip++) {
-                        if (!chip->config) {
-                                chip->config = &exynos_gpio_cfg;
-                                chip->group = group++;
-                        }
-                        exynos_gpiolib_attach_ofnode(chip,
-                                        EXYNOS5_PA_GPIO1, i * 0x20);
-                }
-                samsung_gpiolib_add_4bit_chips(exynos5_gpios_1,
-                                               nr_chips, gpio_base1);
-
-                /* gpio part2 */
-                gpio_base2 = ioremap(EXYNOS5_PA_GPIO2, SZ_4K);
-                if (gpio_base2 == NULL) {
-                        pr_err("unable to ioremap for gpio_base2\n");
-                        goto err_ioremap2;
-                }
-
-                chip = exynos5_gpios_2;
-                nr_chips = ARRAY_SIZE(exynos5_gpios_2);
-
-                for (i = 0; i < nr_chips; i++, chip++) {
-                        if (!chip->config) {
-                                chip->config = &exynos_gpio_cfg;
-                                chip->group = group++;
-                        }
-                        exynos_gpiolib_attach_ofnode(chip,
-                                        EXYNOS5_PA_GPIO2, i * 0x20);
-                }
-                samsung_gpiolib_add_4bit_chips(exynos5_gpios_2,
-                                               nr_chips, gpio_base2);
-
-                /* gpio part3 */
-                gpio_base3 = ioremap(EXYNOS5_PA_GPIO3, SZ_4K);
-                if (gpio_base3 == NULL) {
-                        pr_err("unable to ioremap for gpio_base3\n");
-                        goto err_ioremap3;
-                }
-
-                /* need to set base address for gpv */
-                exynos5_gpios_3[0].base = gpio_base3;
-                exynos5_gpios_3[1].base = gpio_base3 + 0x20;
-                exynos5_gpios_3[2].base = gpio_base3 + 0x60;
-                exynos5_gpios_3[3].base = gpio_base3 + 0x80;
-                exynos5_gpios_3[4].base = gpio_base3 + 0xC0;
-
-                chip = exynos5_gpios_3;
-                nr_chips = ARRAY_SIZE(exynos5_gpios_3);
-
-                for (i = 0; i < nr_chips; i++, chip++) {
-                        if (!chip->config) {
-                                chip->config = &exynos_gpio_cfg;
-                                chip->group = group++;
-                        }
-                        exynos_gpiolib_attach_ofnode(chip,
-                                        EXYNOS5_PA_GPIO3, i * 0x20);
-                }
-                samsung_gpiolib_add_4bit_chips(exynos5_gpios_3,
-                                               nr_chips, gpio_base3);
-
-                /* gpio part4 */
-                gpio_base4 = ioremap(EXYNOS5_PA_GPIO4, SZ_4K);
-                if (gpio_base4 == NULL) {
-                        pr_err("unable to ioremap for gpio_base4\n");
-                        goto err_ioremap4;
-                }
-
-                chip = exynos5_gpios_4;
-                nr_chips = ARRAY_SIZE(exynos5_gpios_4);
-
-                for (i = 0; i < nr_chips; i++, chip++) {
-                        if (!chip->config) {
-                                chip->config = &exynos_gpio_cfg;
-                                chip->group = group++;
-                        }
-                        exynos_gpiolib_attach_ofnode(chip,
-                                        EXYNOS5_PA_GPIO4, i * 0x20);
-                }
-                samsung_gpiolib_add_4bit_chips(exynos5_gpios_4,
-                                               nr_chips, gpio_base4);
-#endif  /* CONFIG_SOC_EXYNOS5250 */
+                exynos5_gpiolib_init();
         } else {
                 WARN(1, "Unknown SoC in gpio-samsung, no GPIOs added\n");
                 return -ENODEV;
         }
 
         return 0;
-
-err_ioremap4:
-        iounmap(gpio_base3);
-err_ioremap3:
-        iounmap(gpio_base2);
-err_ioremap2:
-        iounmap(gpio_base1);
-err_ioremap1:
-        return -ENOMEM;
 }
 core_initcall(samsung_gpiolib_init);