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-rw-r--r--target/linux/lantiq/patches-3.3/0018-MIPS-lantiq-use-devres-managed-gpios.patch282
1 files changed, 282 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-3.3/0018-MIPS-lantiq-use-devres-managed-gpios.patch b/target/linux/lantiq/patches-3.3/0018-MIPS-lantiq-use-devres-managed-gpios.patch
new file mode 100644
index 0000000000..4d4e9202ec
--- /dev/null
+++ b/target/linux/lantiq/patches-3.3/0018-MIPS-lantiq-use-devres-managed-gpios.patch
@@ -0,0 +1,282 @@
+From 400943cf88102423ac10a19c56d053d9c1580a77 Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Thu, 8 Mar 2012 08:37:25 +0100
+Subject: [PATCH 18/70] MIPS: lantiq: use devres managed gpios
+
+3.2 introduced devm_request_gpio() to allow managed gpios.
+
+The devres api requires a struct device pointer to work. Add a parameter to ltq_gpio_request()
+so that managed gpios can work.
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+---
+ .../include/asm/mach-lantiq/falcon/lantiq_soc.h | 4 +---
+ arch/mips/include/asm/mach-lantiq/lantiq.h | 4 ++++
+ .../mips/include/asm/mach-lantiq/xway/lantiq_soc.h | 3 ---
+ arch/mips/lantiq/falcon/gpio.c | 4 ++--
+ arch/mips/lantiq/falcon/prom.c | 7 -------
+ arch/mips/lantiq/xway/gpio.c | 4 ++--
+ arch/mips/lantiq/xway/gpio_stp.c | 13 ++++++++-----
+ arch/mips/pci/pci-lantiq.c | 18 ++++++++++--------
+ drivers/net/ethernet/lantiq_etop.c | 9 ++++++---
+ drivers/tty/serial/lantiq.c | 12 ++++++++++++
+ 10 files changed, 45 insertions(+), 33 deletions(-)
+
+diff --git a/arch/mips/include/asm/mach-lantiq/falcon/lantiq_soc.h b/arch/mips/include/asm/mach-lantiq/falcon/lantiq_soc.h
+index b074748..a5dc06a 100644
+--- a/arch/mips/include/asm/mach-lantiq/falcon/lantiq_soc.h
++++ b/arch/mips/include/asm/mach-lantiq/falcon/lantiq_soc.h
+@@ -126,9 +126,7 @@ extern __iomem void *ltq_sys1_membase;
+ #define ltq_sys1_w32_mask(clear, set, reg) \
+ ltq_sys1_w32((ltq_sys1_r32(reg) & ~(clear)) | (set), reg)
+
+-/* gpio_request wrapper to help configure the pin */
+-extern int ltq_gpio_request(unsigned int pin, unsigned int mux,
+- unsigned int dir, const char *name);
++/* gpio wrapper to help configure the pin muxing */
+ extern int ltq_gpio_mux_set(unsigned int pin, unsigned int mux);
+
+ /* to keep the irq code generic we need to define these to 0 as falcon
+diff --git a/arch/mips/include/asm/mach-lantiq/lantiq.h b/arch/mips/include/asm/mach-lantiq/lantiq.h
+index 188de0f..924b91a 100644
+--- a/arch/mips/include/asm/mach-lantiq/lantiq.h
++++ b/arch/mips/include/asm/mach-lantiq/lantiq.h
+@@ -37,6 +37,10 @@ extern unsigned int ltq_get_soc_type(void);
+ /* spinlock all ebu i/o */
+ extern spinlock_t ebu_lock;
+
++/* request a non-gpio and set the PIO config */
++extern int ltq_gpio_request(struct device *dev, unsigned int pin,
++ unsigned int mux, unsigned int dir, const char *name);
++
+ /* some irq helpers */
+ extern void ltq_disable_irq(struct irq_data *data);
+ extern void ltq_mask_and_ack_irq(struct irq_data *data);
+diff --git a/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h b/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
+index 6983d75..6c5b705 100644
+--- a/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
++++ b/arch/mips/include/asm/mach-lantiq/xway/lantiq_soc.h
+@@ -145,9 +145,6 @@
+ extern __iomem void *ltq_ebu_membase;
+ extern __iomem void *ltq_cgu_membase;
+
+-/* request a non-gpio and set the PIO config */
+-extern int ltq_gpio_request(unsigned int pin, unsigned int mux,
+- unsigned int dir, const char *name);
+ extern void ltq_pmu_enable(unsigned int module);
+ extern void ltq_pmu_disable(unsigned int module);
+ extern void ltq_cgu_enable(unsigned int clk);
+diff --git a/arch/mips/lantiq/falcon/gpio.c b/arch/mips/lantiq/falcon/gpio.c
+index 28f8639..a44f71b 100644
+--- a/arch/mips/lantiq/falcon/gpio.c
++++ b/arch/mips/lantiq/falcon/gpio.c
+@@ -97,7 +97,7 @@ int ltq_gpio_mux_set(unsigned int pin, unsigned int mux)
+ }
+ EXPORT_SYMBOL(ltq_gpio_mux_set);
+
+-int ltq_gpio_request(unsigned int pin, unsigned int mux,
++int ltq_gpio_request(struct device *dev, unsigned int pin, unsigned int mux,
+ unsigned int dir, const char *name)
+ {
+ int port = pin / 100;
+@@ -106,7 +106,7 @@ int ltq_gpio_request(unsigned int pin, unsigned int mux,
+ if (offset >= PINS_PER_PORT || port >= MAX_PORTS)
+ return -EINVAL;
+
+- if (gpio_request(pin, name)) {
++ if (devm_gpio_request(dev, pin, name)) {
+ pr_err("failed to setup lantiq gpio: %s\n", name);
+ return -EBUSY;
+ }
+diff --git a/arch/mips/lantiq/falcon/prom.c b/arch/mips/lantiq/falcon/prom.c
+index b50d6f9..f98b389 100644
+--- a/arch/mips/lantiq/falcon/prom.c
++++ b/arch/mips/lantiq/falcon/prom.c
+@@ -27,9 +27,6 @@
+ #define TYPE_SHIFT 26
+ #define TYPE_MASK 0x3C000000
+
+-#define MUXC_SIF_RX_PIN 112
+-#define MUXC_SIF_TX_PIN 113
+-
+ /* this parameter allows us enable/disable asc1 via commandline */
+ static int register_asc1;
+ static int __init
+@@ -48,10 +45,6 @@ ltq_soc_setup(void)
+ falcon_register_gpio();
+ if (register_asc1) {
+ ltq_register_asc(1);
+- if (ltq_gpio_request(MUXC_SIF_RX_PIN, 3, 0, "asc1-rx"))
+- pr_err("failed to request asc1-rx");
+- if (ltq_gpio_request(MUXC_SIF_TX_PIN, 3, 1, "asc1-tx"))
+- pr_err("failed to request asc1-tx");
+ ltq_sysctl_activate(SYSCTL_SYS1, ACTS_ASC1_ACT);
+ }
+ }
+diff --git a/arch/mips/lantiq/xway/gpio.c b/arch/mips/lantiq/xway/gpio.c
+index 14ff7c7..54ec6c9 100644
+--- a/arch/mips/lantiq/xway/gpio.c
++++ b/arch/mips/lantiq/xway/gpio.c
+@@ -50,14 +50,14 @@ int irq_to_gpio(unsigned int gpio)
+ }
+ EXPORT_SYMBOL(irq_to_gpio);
+
+-int ltq_gpio_request(unsigned int pin, unsigned int mux,
++int ltq_gpio_request(struct device *dev, unsigned int pin, unsigned int mux,
+ unsigned int dir, const char *name)
+ {
+ int id = 0;
+
+ if (pin >= (MAX_PORTS * PINS_PER_PORT))
+ return -EINVAL;
+- if (gpio_request(pin, name)) {
++ if (devm_gpio_request(dev, pin, name)) {
+ pr_err("failed to setup lantiq gpio: %s\n", name);
+ return -EBUSY;
+ }
+diff --git a/arch/mips/lantiq/xway/gpio_stp.c b/arch/mips/lantiq/xway/gpio_stp.c
+index cb6f170..e6b4809 100644
+--- a/arch/mips/lantiq/xway/gpio_stp.c
++++ b/arch/mips/lantiq/xway/gpio_stp.c
+@@ -80,11 +80,6 @@ static struct gpio_chip ltq_stp_chip = {
+
+ static int ltq_stp_hw_init(void)
+ {
+- /* the 3 pins used to control the external stp */
+- ltq_gpio_request(4, 2, 1, "stp-st");
+- ltq_gpio_request(5, 2, 1, "stp-d");
+- ltq_gpio_request(6, 2, 1, "stp-sh");
+-
+ /* sane defaults */
+ ltq_stp_w32(0, LTQ_STP_AR);
+ ltq_stp_w32(0, LTQ_STP_CPU0);
+@@ -133,6 +128,14 @@ static int __devinit ltq_stp_probe(struct platform_device *pdev)
+ dev_err(&pdev->dev, "failed to remap STP memory\n");
+ return -ENOMEM;
+ }
++
++ /* the 3 pins used to control the external stp */
++ if (ltq_gpio_request(&pdev->dev, 4, 2, 1, "stp-st") ||
++ ltq_gpio_request(&pdev->dev, 5, 2, 1, "stp-d") ||
++ ltq_gpio_request(&pdev->dev, 6, 2, 1, "stp-sh")) {
++ dev_err(&pdev->dev, "failed to request needed gpios\n");
++ return -EBUSY;
++ }
+ ret = gpiochip_add(&ltq_stp_chip);
+ if (!ret)
+ ret = ltq_stp_hw_init();
+diff --git a/arch/mips/pci/pci-lantiq.c b/arch/mips/pci/pci-lantiq.c
+index c001c5a..47b551c 100644
+--- a/arch/mips/pci/pci-lantiq.c
++++ b/arch/mips/pci/pci-lantiq.c
+@@ -150,24 +150,26 @@ static u32 ltq_calc_bar11mask(void)
+ return bar11mask;
+ }
+
+-static void ltq_pci_setup_gpio(int gpio)
++static void ltq_pci_setup_gpio(struct device *dev)
+ {
++ struct ltq_pci_data *conf = (struct ltq_pci_data *) dev->platform_data;
+ int i;
+ for (i = 0; i < ARRAY_SIZE(ltq_pci_gpio_map); i++) {
+- if (gpio & (1 << i)) {
+- ltq_gpio_request(ltq_pci_gpio_map[i].pin,
++ if (conf->gpio & (1 << i)) {
++ ltq_gpio_request(dev, ltq_pci_gpio_map[i].pin,
+ ltq_pci_gpio_map[i].mux,
+ ltq_pci_gpio_map[i].dir,
+ ltq_pci_gpio_map[i].name);
+ }
+ }
+- ltq_gpio_request(21, 0, 1, "pci-reset");
+- ltq_pci_req_mask = (gpio >> PCI_REQ_SHIFT) & PCI_REQ_MASK;
++ ltq_gpio_request(dev, 21, 0, 1, "pci-reset");
++ ltq_pci_req_mask = (conf->gpio >> PCI_REQ_SHIFT) & PCI_REQ_MASK;
+ }
+
+-static int __devinit ltq_pci_startup(struct ltq_pci_data *conf)
++static int __devinit ltq_pci_startup(struct device *dev)
+ {
+ u32 temp_buffer;
++ struct ltq_pci_data *conf = (struct ltq_pci_data *) dev->platform_data;
+
+ /* set clock to 33Mhz */
+ if (ltq_is_ar9()) {
+@@ -190,7 +192,7 @@ static int __devinit ltq_pci_startup(struct ltq_pci_data *conf)
+ }
+
+ /* setup pci clock and gpis used by pci */
+- ltq_pci_setup_gpio(conf->gpio);
++ ltq_pci_setup_gpio(dev);
+
+ /* enable auto-switching between PCI and EBU */
+ ltq_pci_w32(0xa, PCI_CR_CLK_CTRL);
+@@ -275,7 +277,7 @@ static int __devinit ltq_pci_probe(struct platform_device *pdev)
+ ioremap_nocache(LTQ_PCI_CFG_BASE, LTQ_PCI_CFG_BASE);
+ ltq_pci_controller.io_map_base =
+ (unsigned long)ioremap(LTQ_PCI_IO_BASE, LTQ_PCI_IO_SIZE - 1);
+- ltq_pci_startup(ltq_pci_data);
++ ltq_pci_startup(&pdev->dev);
+ register_pci_controller(&ltq_pci_controller);
+
+ return 0;
+diff --git a/drivers/net/ethernet/lantiq_etop.c b/drivers/net/ethernet/lantiq_etop.c
+index daba994..ad0fa54 100644
+--- a/drivers/net/ethernet/lantiq_etop.c
++++ b/drivers/net/ethernet/lantiq_etop.c
+@@ -292,9 +292,6 @@ ltq_etop_gbit_init(void)
+ {
+ ltq_pmu_enable(PMU_SWITCH);
+
+- ltq_gpio_request(42, 2, 1, "MDIO");
+- ltq_gpio_request(43, 2, 1, "MDC");
+-
+ ltq_gbit_w32_mask(0, GCTL0_SE, LTQ_GBIT_GCTL0);
+ /** Disable MDIO auto polling mode */
+ ltq_gbit_w32_mask(0, PX_CTL_DMDIO, LTQ_GBIT_P0_CTL);
+@@ -870,6 +867,12 @@ ltq_etop_probe(struct platform_device *pdev)
+ err = -ENOMEM;
+ goto err_out;
+ }
++ if (ltq_gpio_request(&pdev->dev, 42, 2, 1, "MDIO") ||
++ ltq_gpio_request(&pdev->dev, 43, 2, 1, "MDC")) {
++ dev_err(&pdev->dev, "failed to request MDIO gpios\n");
++ err = -EBUSY;
++ goto err_out;
++ }
+ }
+
+ dev = alloc_etherdev_mq(sizeof(struct ltq_etop_priv), 4);
+diff --git a/drivers/tty/serial/lantiq.c b/drivers/tty/serial/lantiq.c
+index 96c1cac..5d25828 100644
+--- a/drivers/tty/serial/lantiq.c
++++ b/drivers/tty/serial/lantiq.c
+@@ -107,6 +107,9 @@
+ #define ASCFSTAT_TXFREEMASK 0x3F000000
+ #define ASCFSTAT_TXFREEOFF 24
+
++#define MUXC_SIF_RX_PIN 112
++#define MUXC_SIF_TX_PIN 113
++
+ static void lqasc_tx_chars(struct uart_port *port);
+ static struct ltq_uart_port *lqasc_port[MAXPORTS];
+ static struct uart_driver lqasc_reg;
+@@ -529,6 +532,15 @@ lqasc_request_port(struct uart_port *port)
+ if (port->membase == NULL)
+ return -ENOMEM;
+ }
++ if (ltq_is_falcon() && (port->line == 1)) {
++ struct ltq_uart_port *ltq_port = lqasc_port[pdev->id];
++ if (ltq_gpio_request(&pdev->dev, MUXC_SIF_RX_PIN,
++ 3, 0, "asc1-rx"))
++ return -EBUSY;
++ if (ltq_gpio_request(&pdev->dev, MUXC_SIF_TX_PIN,
++ 3, 1, "asc1-tx"))
++ return -EBUSY;
++ }
+ return 0;
+ }
+
+--
+1.7.9.1
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 19:11:30 +0000