diff options
Diffstat (limited to 'target/linux/lantiq/patches-3.3/0018-MIPS-lantiq-use-devres-managed-gpios.patch')
| -rw-r--r-- | target/linux/lantiq/patches-3.3/0018-MIPS-lantiq-use-devres-managed-gpios.patch | 282 |
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(<q_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(<q_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 + |