diff options
Diffstat (limited to 'arch/blackfin/kernel')
| -rw-r--r-- | arch/blackfin/kernel/bfin_gpio.c | 102 |
1 files changed, 66 insertions, 36 deletions
diff --git a/arch/blackfin/kernel/bfin_gpio.c b/arch/blackfin/kernel/bfin_gpio.c index 979cf79d379..0182ce1fc4f 100644 --- a/arch/blackfin/kernel/bfin_gpio.c +++ b/arch/blackfin/kernel/bfin_gpio.c @@ -118,9 +118,14 @@ static struct gpio_port_t *gpio_bankb[gpio_bank(MAX_BLACKFIN_GPIOS)] = { static unsigned short reserved_gpio_map[gpio_bank(MAX_BLACKFIN_GPIOS)]; static unsigned short reserved_peri_map[gpio_bank(MAX_BLACKFIN_GPIOS + 16)]; -char *str_ident = NULL; -#define RESOURCE_LABEL_SIZE 16 +#define MAX_RESOURCES 256 +#define RESOURCE_LABEL_SIZE 16 + +struct str_ident { + char name[RESOURCE_LABEL_SIZE]; +} *str_ident; + #ifdef CONFIG_PM static unsigned short wakeup_map[gpio_bank(MAX_BLACKFIN_GPIOS)]; @@ -152,10 +157,9 @@ static void set_label(unsigned short ident, const char *label) { if (label && str_ident) { - strncpy(str_ident + ident * RESOURCE_LABEL_SIZE, label, + strncpy(str_ident[ident].name, label, RESOURCE_LABEL_SIZE); - str_ident[ident * RESOURCE_LABEL_SIZE + - RESOURCE_LABEL_SIZE - 1] = 0; + str_ident[ident].name[RESOURCE_LABEL_SIZE - 1] = 0; } } @@ -164,14 +168,13 @@ static char *get_label(unsigned short ident) if (!str_ident) return "UNKNOWN"; - return (str_ident[ident * RESOURCE_LABEL_SIZE] ? - (str_ident + ident * RESOURCE_LABEL_SIZE) : "UNKNOWN"); + return (*str_ident[ident].name ? str_ident[ident].name : "UNKNOWN"); } static int cmp_label(unsigned short ident, const char *label) { if (label && str_ident) - return strncmp(str_ident + ident * RESOURCE_LABEL_SIZE, + return strncmp(str_ident[ident].name, label, strlen(label)); else return -EINVAL; @@ -194,37 +197,63 @@ static void port_setup(unsigned short gpio, unsigned short usage) #ifdef BF537_FAMILY -#define PMUX_LUT_RES 0 -#define PMUX_LUT_OFFSET 1 -#define PMUX_LUT_ENTRIES 41 -#define PMUX_LUT_SIZE 2 - -static unsigned short port_mux_lut[PMUX_LUT_ENTRIES][PMUX_LUT_SIZE] = { - {P_PPI0_D13, 11}, {P_PPI0_D14, 11}, {P_PPI0_D15, 11}, - {P_SPORT1_TFS, 11}, {P_SPORT1_TSCLK, 11}, {P_SPORT1_DTPRI, 11}, - {P_PPI0_D10, 10}, {P_PPI0_D11, 10}, {P_PPI0_D12, 10}, - {P_SPORT1_RSCLK, 10}, {P_SPORT1_RFS, 10}, {P_SPORT1_DRPRI, 10}, - {P_PPI0_D8, 9}, {P_PPI0_D9, 9}, {P_SPORT1_DRSEC, 9}, - {P_SPORT1_DTSEC, 9}, {P_TMR2, 8}, {P_PPI0_FS3, 8}, {P_TMR3, 7}, - {P_SPI0_SSEL4, 7}, {P_TMR4, 6}, {P_SPI0_SSEL5, 6}, {P_TMR5, 5}, - {P_SPI0_SSEL6, 5}, {P_UART1_RX, 4}, {P_UART1_TX, 4}, {P_TMR6, 4}, - {P_TMR7, 4}, {P_UART0_RX, 3}, {P_UART0_TX, 3}, {P_DMAR0, 3}, - {P_DMAR1, 3}, {P_SPORT0_DTSEC, 1}, {P_SPORT0_DRSEC, 1}, - {P_CAN0_RX, 1}, {P_CAN0_TX, 1}, {P_SPI0_SSEL7, 1}, - {P_SPORT0_TFS, 0}, {P_SPORT0_DTPRI, 0}, {P_SPI0_SSEL2, 0}, - {P_SPI0_SSEL3, 0} +static struct { + unsigned short res; + unsigned short offset; +} port_mux_lut[] = { + {.res = P_PPI0_D13, .offset = 11}, + {.res = P_PPI0_D14, .offset = 11}, + {.res = P_PPI0_D15, .offset = 11}, + {.res = P_SPORT1_TFS, .offset = 11}, + {.res = P_SPORT1_TSCLK, .offset = 11}, + {.res = P_SPORT1_DTPRI, .offset = 11}, + {.res = P_PPI0_D10, .offset = 10}, + {.res = P_PPI0_D11, .offset = 10}, + {.res = P_PPI0_D12, .offset = 10}, + {.res = P_SPORT1_RSCLK, .offset = 10}, + {.res = P_SPORT1_RFS, .offset = 10}, + {.res = P_SPORT1_DRPRI, .offset = 10}, + {.res = P_PPI0_D8, .offset = 9}, + {.res = P_PPI0_D9, .offset = 9}, + {.res = P_SPORT1_DRSEC, .offset = 9}, + {.res = P_SPORT1_DTSEC, .offset = 9}, + {.res = P_TMR2, .offset = 8}, + {.res = P_PPI0_FS3, .offset = 8}, + {.res = P_TMR3, .offset = 7}, + {.res = P_SPI0_SSEL4, .offset = 7}, + {.res = P_TMR4, .offset = 6}, + {.res = P_SPI0_SSEL5, .offset = 6}, + {.res = P_TMR5, .offset = 5}, + {.res = P_SPI0_SSEL6, .offset = 5}, + {.res = P_UART1_RX, .offset = 4}, + {.res = P_UART1_TX, .offset = 4}, + {.res = P_TMR6, .offset = 4}, + {.res = P_TMR7, .offset = 4}, + {.res = P_UART0_RX, .offset = 3}, + {.res = P_UART0_TX, .offset = 3}, + {.res = P_DMAR0, .offset = 3}, + {.res = P_DMAR1, .offset = 3}, + {.res = P_SPORT0_DTSEC, .offset = 1}, + {.res = P_SPORT0_DRSEC, .offset = 1}, + {.res = P_CAN0_RX, .offset = 1}, + {.res = P_CAN0_TX, .offset = 1}, + {.res = P_SPI0_SSEL7, .offset = 1}, + {.res = P_SPORT0_TFS, .offset = 0}, + {.res = P_SPORT0_DTPRI, .offset = 0}, + {.res = P_SPI0_SSEL2, .offset = 0}, + {.res = P_SPI0_SSEL3, .offset = 0}, }; static void portmux_setup(unsigned short per, unsigned short function) { - u16 y, muxreg, offset; + u16 y, offset, muxreg; - for (y = 0; y < PMUX_LUT_ENTRIES; y++) { - if (port_mux_lut[y][PMUX_LUT_RES] == per) { + for (y = 0; y < ARRAY_SIZE(port_mux_lut); y++) { + if (port_mux_lut[y].res == per) { /* SET PORTMUX REG */ - offset = port_mux_lut[y][PMUX_LUT_OFFSET]; + offset = port_mux_lut[y].offset; muxreg = bfin_read_PORT_MUX(); if (offset != 1) { @@ -262,17 +291,18 @@ static void default_gpio(unsigned short gpio) static int __init bfin_gpio_init(void) { - - str_ident = kzalloc(RESOURCE_LABEL_SIZE * 256, GFP_KERNEL); - if (!str_ident) + str_ident = kcalloc(MAX_RESOURCES, + sizeof(struct str_ident), GFP_KERNEL); + if (str_ident == NULL) return -ENOMEM; + memset(str_ident, 0, MAX_RESOURCES * sizeof(struct str_ident)); + printk(KERN_INFO "Blackfin GPIO Controller\n"); return 0; } - arch_initcall(bfin_gpio_init); @@ -680,7 +710,7 @@ int peripheral_request(unsigned short per, const char *label) printk(KERN_ERR "%s: Peripheral %d function %d is already" - "reserved by %s !\n", + " reserved by %s !\n", __FUNCTION__, ident, P_FUNCT2MUX(per), get_label(ident)); dump_stack(); |