/* * pinmux driver for CSR SiRFprimaII * * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company. * * Licensed under GPLv2 or later. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define DRIVER_NAME "pinmux-sirf" #define SIRFSOC_NUM_PADS 622 #define SIRFSOC_RSC_PIN_MUX 0x4 #define SIRFSOC_GPIO_PAD_EN(g) ((g)*0x100 + 0x84) #define SIRFSOC_GPIO_CTRL(g, i) ((g)*0x100 + (i)*4) #define SIRFSOC_GPIO_DSP_EN0 (0x80) #define SIRFSOC_GPIO_PAD_EN(g) ((g)*0x100 + 0x84) #define SIRFSOC_GPIO_INT_STATUS(g) ((g)*0x100 + 0x8C) #define SIRFSOC_GPIO_CTL_INTR_LOW_MASK 0x1 #define SIRFSOC_GPIO_CTL_INTR_HIGH_MASK 0x2 #define SIRFSOC_GPIO_CTL_INTR_TYPE_MASK 0x4 #define SIRFSOC_GPIO_CTL_INTR_EN_MASK 0x8 #define SIRFSOC_GPIO_CTL_INTR_STS_MASK 0x10 #define SIRFSOC_GPIO_CTL_OUT_EN_MASK 0x20 #define SIRFSOC_GPIO_CTL_DATAOUT_MASK 0x40 #define SIRFSOC_GPIO_CTL_DATAIN_MASK 0x80 #define SIRFSOC_GPIO_CTL_PULL_MASK 0x100 #define SIRFSOC_GPIO_CTL_PULL_HIGH 0x200 #define SIRFSOC_GPIO_CTL_DSP_INT 0x400 #define SIRFSOC_GPIO_NO_OF_BANKS 5 #define SIRFSOC_GPIO_BANK_SIZE 32 #define SIRFSOC_GPIO_NUM(bank, index) (((bank)*(32)) + (index)) struct sirfsoc_gpio_bank { struct of_mm_gpio_chip chip; struct irq_domain *domain; int id; int parent_irq; spinlock_t lock; }; static struct sirfsoc_gpio_bank sgpio_bank[SIRFSOC_GPIO_NO_OF_BANKS]; static DEFINE_SPINLOCK(sgpio_lock); /* * pad list for the pinmux subsystem * refer to CS-131858-DC-6A.xls */ static const struct pinctrl_pin_desc sirfsoc_pads[] = { PINCTRL_PIN(0, "gpio0-0"), PINCTRL_PIN(1, "gpio0-1"), PINCTRL_PIN(2, "gpio0-2"), PINCTRL_PIN(3, "gpio0-3"), PINCTRL_PIN(4, "pwm0"), PINCTRL_PIN(5, "pwm1"), PINCTRL_PIN(6, "pwm2"), PINCTRL_PIN(7, "pwm3"), PINCTRL_PIN(8, "warm_rst_b"), PINCTRL_PIN(9, "odo_0"), PINCTRL_PIN(10, "odo_1"), PINCTRL_PIN(11, "dr_dir"), PINCTRL_PIN(12, "viprom_fa"), PINCTRL_PIN(13, "scl_1"), PINCTRL_PIN(14, "ntrst"), PINCTRL_PIN(15, "sda_1"), PINCTRL_PIN(16, "x_ldd[16]"), PINCTRL_PIN(17, "x_ldd[17]"), PINCTRL_PIN(18, "x_ldd[18]"), PINCTRL_PIN(19, "x_ldd[19]"), PINCTRL_PIN(20, "x_ldd[20]"), PINCTRL_PIN(21, "x_ldd[21]"), PINCTRL_PIN(22, "x_ldd[22]"), PINCTRL_PIN(23, "x_ldd[23], lcdrom_frdy"), PINCTRL_PIN(24, "gps_sgn"), PINCTRL_PIN(25, "gps_mag"), PINCTRL_PIN(26, "gps_clk"), PINCTRL_PIN(27, "sd_cd_b_1"), PINCTRL_PIN(28, "sd_vcc_on_1"), PINCTRL_PIN(29, "sd_wp_b_1"), PINCTRL_PIN(30, "sd_clk_3"), PINCTRL_PIN(31, "sd_cmd_3"), PINCTRL_PIN(32, "x_sd_dat_3[0]"), PINCTRL_PIN(33, "x_sd_dat_3[1]"), PINCTRL_PIN(34, "x_sd_dat_3[2]"), PINCTRL_PIN(35, "x_sd_dat_3[3]"), PINCTRL_PIN(36, "x_sd_clk_4"), PINCTRL_PIN(37, "x_sd_cmd_4"), PINCTRL_PIN(38, "x_sd_dat_4[0]"), PINCTRL_PIN(39, "x_sd_dat_4[1]"), PINCTRL_PIN(40, "x_sd_dat_4[2]"), PINCTRL_PIN(41, "x_sd_dat_4[3]"), PINCTRL_PIN(42, "x_cko_1"), PINCTRL_PIN(43, "x_ac97_bit_clk"), PINCTRL_PIN(44, "x_ac97_dout"), PINCTRL_PIN(45, "x_ac97_din"), PINCTRL_PIN(46, "x_ac97_sync"), PINCTRL_PIN(47, "x_txd_1"), PINCTRL_PIN(48, "x_txd_2"), PINCTRL_PIN(49, "x_rxd_1"), PINCTRL_PIN(50, "x_rxd_2"), PINCTRL_PIN(51, "x_usclk_0"), PINCTRL_PIN(52, "x_utxd_0"), PINCTRL_PIN(53, "x_urxd_0"), PINCTRL_PIN(54, "x_utfs_0"), PINCTRL_PIN(55, "x_urfs_0"), PINCTRL_PIN(56, "x_usclk_1"), PINCTRL_PIN(57, "x_utxd_1"), PINCTRL_PIN(58, "x_urxd_1"), PINCTRL_PIN(59, "x_utfs_1"), PINCTRL_PIN(60, "x_urfs_1"), PINCTRL_PIN(61, "x_usclk_2"), PINCTRL_PIN(62, "x_utxd_2"), PINCTRL_PIN(63, "x_urxd_2"), PINCTRL_PIN(64, "x_utfs_2"), PINCTRL_PIN(65, "x_urfs_2"), PINCTRL_PIN(66, "x_df_we_b"), PINCTRL_PIN(67, "x_df_re_b"), PINCTRL_PIN(68, "x_txd_0"), PINCTRL_PIN(69, "x_rxd_0"), PINCTRL_PIN(78, "x_cko_0"), PINCTRL_PIN(79, "x_vip_pxd[7]"), PINCTRL_PIN(80, "x_vip_pxd[6]"), PINCTRL_PIN(81, "x_vip_pxd[5]"), PINCTRL_PIN(82, "x_vip_pxd[4]"), PINCTRL_PIN(83, "x_vip_pxd[3]"), PINCTRL_PIN(84, "x_vip_pxd[2]"), PINCTRL_PIN(85, "x_vip_pxd[1]"), PINCTRL_PIN(86, "x_vip_pxd[0]"), PINCTRL_PIN(87, "x_vip_vsync"), PINCTRL_PIN(88, "x_vip_hsync"), PINCTRL_PIN(89, "x_vip_pxclk"), PINCTRL_PIN(90, "x_sda_0"), PINCTRL_PIN(91, "x_scl_0"), PINCTRL_PIN(92, "x_df_ry_by"), PINCTRL_PIN(93, "x_df_cs_b[1]"), PINCTRL_PIN(94, "x_df_cs_b[0]"), PINCTRL_PIN(95, "x_l_pclk"), PINCTRL_PIN(96, "x_l_lck"), PINCTRL_PIN(97, "x_l_fck"), PINCTRL_PIN(98, "x_l_de"), PINCTRL_PIN(99, "x_ldd[0]"), PINCTRL_PIN(100, "x_ldd[1]"), PINCTRL_PIN(101, "x_ldd[2]"), PINCTRL_PIN(102, "x_ldd[3]"), PINCTRL_PIN(103, "x_ldd[4]"), PINCTRL_PIN(104, "x_ldd[5]"), PINCTRL_PIN(105, "x_ldd[6]"), PINCTRL_PIN(106, "x_ldd[7]"), PINCTRL_PIN(107, "x_ldd[8]"), PINCTRL_PIN(108, "x_ldd[9]"), PINCTRL_PIN(109, "x_ldd[10]"), PINCTRL_PIN(110, "x_ldd[11]"), PINCTRL_PIN(111, "x_ldd[12]"), PINCTRL_PIN(112, "x_ldd[13]"), PINCTRL_PIN(113, "x_ldd[14]"), PINCTRL_PIN(114, "x_ldd[15]"), }; /** * @dev: a pointer back to containing device * @virtbase: the offset to the controller in virtual memory */ struct sirfsoc_pmx { struct device *dev; struct pinctrl_dev *pmx; void __iomem *gpio_virtbase; void __iomem *rsc_virtbase; }; /* SIRFSOC_GPIO_PAD_EN set */ struct sirfsoc_muxmask { unsigned long group; unsigned long mask; }; struct sirfsoc_padmux { unsigned long muxmask_counts; const struct sirfsoc_muxmask *muxmask; /* RSC_PIN_MUX set */ unsigned long funcmask; unsigned long funcval; }; /** * struct sirfsoc_pin_group - describes a SiRFprimaII pin group * @name: the name of this specific pin group * @pins: an array of discrete physical pins used in this group, taken * from the driver-local pin enumeration space * @num_pins: the number of pins in this group array, i.e. the number of * elements in .pins so we can iterate over that array */ struct sirfsoc_pin_group { const char *name; const unsigned int *pins; const unsigned num_pins; }; static const struct sirfsoc_muxmask lcd_16bits_sirfsoc_muxmask[] = { { .group = 3, .mask = BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | BIT(6) | BIT(7) | BIT(8) | BIT(9) | BIT(10) | BIT(11) | BIT(12) | BIT(13) | BIT(14) | BIT(15) | BIT(16) | BIT(17) | BIT(18), }, { .group = 2, .mask = BIT(31), }, }; static const struct sirfsoc_padmux lcd_16bits_padmux = { .muxmask_counts = ARRAY_SIZE(lcd_16bits_sirfsoc_muxmask), .muxmask = lcd_16bits_sirfsoc_muxmask, .funcmask = BIT(4), .funcval = 0, }; static const unsigned lcd_16bits_pins[] = { 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114 }; static const struct sirfsoc_muxmask lcd_18bits_muxmask[] = { { .group = 3, .mask = BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | BIT(6) | BIT(7) | BIT(8) | BIT(9) | BIT(10) | BIT(11) | BIT(12) | BIT(13) | BIT(14) | BIT(15) | BIT(16) | BIT(17) | BIT(18), }, { .group = 2, .mask = BIT(31), }, { .group = 0, .mask = BIT(16) | BIT(17), }, }; static const struct sirfsoc_padmux lcd_18bits_padmux = { .muxmask_counts = ARRAY_SIZE(lcd_18bits_muxmask), .muxmask = lcd_18bits_muxmask, .funcmask = BIT(4), .funcval = 0, }; static const unsigned lcd_18bits_pins[] = { 16, 17, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114}; static const struct sirfsoc_muxmask lcd_24bits_muxmask[] = { { .group = 3, .mask = BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | BIT(6) | BIT(7) | BIT(8) | BIT(9) | BIT(10) | BIT(11) | BIT(12) | BIT(13) | BIT(14) | BIT(15) | BIT(16) | BIT(17) | BIT(18), }, { .group = 2, .mask = BIT(31), }, { .group = 0, .mask = BIT(16) | BIT(17) | BIT(18) | BIT(19) | BIT(20) | BIT(21) | BIT(22) | BIT(23), }, }; static const struct sirfsoc_padmux lcd_24bits_padmux = { .muxmask_counts = ARRAY_SIZE(lcd_24bits_muxmask), .muxmask = lcd_24bits_muxmask, .funcmask = BIT(4), .funcval = 0, }; static const unsigned lcd_24bits_pins[] = { 16, 17, 18, 19, 20, 21, 22, 23, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114 }; static const struct sirfsoc_muxmask lcdrom_muxmask[] = { { .group = 3, .mask = BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5) | BIT(6) | BIT(7) | BIT(8) | BIT(9) | BIT(10) | BIT(11) | BIT(12) | BIT(13) | BIT(14) | BIT(15) | BIT(16) | BIT(17) | BIT(18), }, { .group = 2, .mask = BIT(31), }, { .group = 0, .mask = BIT(23), }, }; static const struct sirfsoc_padmux lcdrom_padmux = { .muxmask_counts = ARRAY_SIZE(lcdrom_muxmask), .muxmask = lcdrom_muxmask, .funcmask = BIT(4), .funcval = BIT(4), }; static const unsigned lcdrom_pins[] = { 23, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114 }; static const struct sirfsoc_muxmask uart0_muxmask[] = { { .group = 2, .mask = BIT(4) | BIT(5), }, { .group = 1, .mask = BIT(23) | BIT(28), }, }; static const struct sirfsoc_padmux uart0_padmux = { .muxmask_counts = ARRAY_SIZE(uart0_muxmask), .muxmask = uart0_muxmask, .funcmask = BIT(9), .funcval = BIT(9), }; static const unsigned uart0_pins[] = { 55, 60, 68, 69 }; static const struct sirfsoc_muxmask uart0_nostreamctrl_muxmask[] = { { .group = 2, .mask = BIT(4) | BIT(5), }, }; static const struct sirfsoc_padmux uart0_nostreamctrl_padmux = { .muxmask_counts = ARRAY_SIZE(uart0_nostreamctrl_muxmask), .muxmask = uart0_nostreamctrl_muxmask, }; static const unsigned uart0_nostreamctrl_pins[] = { 68, 39 }; static const struct sirfsoc_muxmask uart1_muxmask[] = { { .group = 1, .mask = BIT(15) | BIT(17), }, }; static const struct sirfsoc_padmux uart1_padmux = { .muxmask_counts = ARRAY_SIZE(uart1_muxmask), .muxmask = uart1_muxmask, }; static const unsigned uart1_pins[] = { 47, 49 }; static const struct sirfsoc_muxmask uart2_muxmask[] = { { .group = 1, .mask = BIT(16) | BIT(18) | BIT(24) | BIT(27), }, }; static const struct sirfsoc_padmux uart2_padmux = { .muxmask_counts = ARRAY_SIZE(uart2_muxmask), .muxmask = uart2_muxmask, .funcmask = BIT(10), .funcval = BIT(10), }; static const unsigned uart2_pins[] = { 48, 50, 56, 59 }; static const struct sirfsoc_muxmask uart2_nostreamctrl_muxmask[] = { { .group = 1, .mask = BIT(16) | BIT(18), }, }; static const struct sirfsoc_padmux uart2_nostreamctrl_padmux = { .muxmask_counts = ARRAY_SIZE(uart2_nostreamctrl_muxmask), .muxmask = uart2_nostreamctrl_muxmask, }; static const unsigned uart2_nostreamctrl_pins[] = { 48, 50 }; static const struct sirfsoc_muxmask sdmmc3_muxmask[] = { { .group = 0, .mask = BIT(30) | BIT(31), }, { .group = 1, .mask = BIT(0) | BIT(1) | BIT(2) | BIT(3), }, }; static const struct sirfsoc_padmux sdmmc3_padmux = { .muxmask_counts = ARRAY_SIZE(sdmmc3_muxmask), .muxmask = sdmmc3_muxmask, .funcmask = BIT(7), .funcval = 0, }; static const unsigned sdmmc3_pins[] = { 30, 31, 32, 33, 34, 35 }; static const struct sirfsoc_muxmask spi0_muxmask[] = { { .group = 1, .mask = BIT(0) | BIT(1) | BIT(2) | BIT(3), }, }; static const struct sirfsoc_padmux spi0_padmux = { .muxmask_counts = ARRAY_SIZE(spi0_muxmask), .muxmask = spi0_muxmask, .funcmask = BIT(7), .funcval = BIT(7), }; static const unsigned spi0_pins[] = { 32, 33, 34, 35 }; static const struct sirfsoc_muxmask sdmmc4_muxmask[] = { { .group = 1, .mask = BIT(4) | BIT(5) | BIT(6) | BIT(7) | BIT(8) | BIT(9), }, }; static const struct sirfsoc_padmux sdmmc4_padmux = { .muxmask_counts = ARRAY_SIZE(sdmmc4_muxmask), .muxmask = sdmmc4_muxmask, }; static const unsigned sdmmc4_pins[] = { 36, 37, 38, 39, 40, 41 }; static const struct sirfsoc_muxmask cko1_muxmask[] = { { .group = 1, .mask = BIT(10), }, }; static const struct sirfsoc_padmux cko1_padmux = { .muxmask_counts = ARRAY_SIZE(cko1_muxmask), .muxmask = cko1_muxmask, .funcmask = BIT(3), .funcval = 0, }; static const unsigned cko1_pins[] = { 42 }; static const struct sirfsoc_muxmask i2s_muxmask[] = { { .group = 1, .mask = BIT(10) | BIT(11) | BIT(12) | BIT(13) | BIT(14) | BIT(19) | BIT(23) | BIT(28), }, }; static const struct sirfsoc_padmux i2s_padmux = { .muxmask_counts = ARRAY_SIZE(i2s_muxmask), .muxmask = i2s_muxmask, .funcmask = BIT(3) | BIT(9), .funcval = BIT(3), }; static const unsigned i2s_pins[] = { 42, 43, 44, 45, 46, 51, 55, 60 }; static const struct sirfsoc_muxmask ac97_muxmask[] = { { .group = 1, .mask = BIT(11) | BIT(12) | BIT(13) | BIT(14), }, }; static const struct sirfsoc_padmux ac97_padmux = { .muxmask_counts = ARRAY_SIZE(ac97_muxmask), .muxmask = ac97_muxmask, .funcmask = BIT(8), .funcval = 0, }; static const unsigned ac97_pins[] = { 33, 34, 35, 36 }; static const struct sirfsoc_muxmask spi1_muxmask[] = { { .group = 1, .mask = BIT(11) | BIT(12) | BIT(13) | BIT(14), }, }; static const struct sirfsoc_padmux spi1_padmux = { .muxmask_counts = ARRAY_SIZE(spi1_muxmask), .muxmask = spi1_muxmask, .funcmask = BIT(8), .funcval = BIT(8), }; static const unsigned spi1_pins[] = { 43, 44, 45, 46 }; static const struct sirfsoc_muxmask sdmmc1_muxmask[] = { { .group = 0, .mask = BIT(27) | BIT(28) | BIT(29), }, }; static const struct sirfsoc_padmux sdmmc1_padmux = { .muxmask_counts = ARRAY_SIZE(sdmmc1_muxmask), .muxmask = sdmmc1_muxmask, }; static const unsigned sdmmc1_pins[] = { 27, 28, 29 }; static const struct sirfsoc_muxmask gps_muxmask[] = { { .group = 0, .mask = BIT(24) | BIT(25) | BIT(26), }, }; static const struct sirfsoc_padmux gps_padmux = { .muxmask_counts = ARRAY_SIZE(gps_muxmask), .muxmask = gps_muxmask, .funcmask = BIT(12) | BIT(13) | BIT(14), .funcval = BIT(12), }; static const unsigned gps_pins[] = { 24, 25, 26 }; static const struct sirfsoc_muxmask sdmmc5_muxmask[] = { { .group = 0, .mask = BIT(24) | BIT(25) | BIT(26), }, { .group = 1, .mask = BIT(29), }, { .group = 2, .mask = BIT(0) | BIT(1), }, }; static const struct sirfsoc_padmux sdmmc5_padmux = { .muxmask_counts = ARRAY_SIZE(sdmmc5_muxmask), .muxmask = sdmmc5_muxmask, .funcmask = BIT(13) | BIT(14), .funcval = BIT(13) | BIT(14), }; static const unsigned sdmmc5_pins[] = { 24, 25, 26, 61, 64, 65 }; static const struct sirfsoc_muxmask usp0_muxmask[] = { { .group = 1, .mask = BIT(19) | BIT(20) | BIT(21) | BIT(22) | BIT(23), }, }; static const struct sirfsoc_padmux usp0_padmux = { .muxmask_counts = ARRAY_SIZE(usp0_muxmask), .muxmask = usp0_muxmask, .funcmask = BIT(1) | BIT(2) | BIT(6) | BIT(9), .funcval = 0, }; static const unsigned usp0_pins[] = { 51, 52, 53, 54, 55 }; static const struct sirfsoc_muxmask usp1_muxmask[] = { { .group = 1, .mask = BIT(24) | BIT(25) | BIT(26) | BIT(27) | BIT(28), }, }; static const struct sirfsoc_padmux usp1_padmux = { .muxmask_counts = ARRAY_SIZE(usp1_muxmask), .muxmask = usp1_muxmask, .funcmask = BIT(1) | BIT(9) | BIT(10) | BIT(11), .funcval = 0, }; static const unsigned usp1_pins[] = { 56, 57, 58, 59, 60 }; static const struct sirfsoc_muxmask usp2_muxmask[] = { { .group = 1, .mask = BIT(29) | BIT(30) | BIT(31), }, { .group = 2, .mask = BIT(0) | BIT(1), }, }; static const struct sirfsoc_padmux usp2_padmux = { .muxmask_counts = ARRAY_SIZE(usp2_muxmask), .muxmask = usp2_muxmask, .funcmask = BIT(13) | BIT(14), .funcval = 0, }; static const unsigned usp2_pins[] = { 61, 62, 63, 64, 65 }; static const struct sirfsoc_muxmask nand_muxmask[] = { { .group = 2, .mask = BIT(2) | BIT(3) | BIT(28) | BIT(29) | BIT(30), }, }; static const struct sirfsoc_padmux nand_padmux = { .muxmask_counts = ARRAY_SIZE(nand_muxmask), .muxmask = nand_muxmask, .funcmask = BIT(5), .funcval = 0, }; static const unsigned nand_pins[] = { 64, 65, 92, 93, 94 }; static const struct sirfsoc_padmux sdmmc0_padmux = { .muxmask_counts = 0, .funcmask = BIT(5), .funcval = 0, }; static const unsigned sdmmc0_pins[] = { }; static const struct sirfsoc_muxmask sdmmc2_muxmask[] = { { .group = 2, .mask = BIT(2) | BIT(3), }, }; static const struct sirfsoc_padmux sdmmc2_padmux = { .muxmask_counts = ARRAY_SIZE(sdmmc2_muxmask), .muxmask = sdmmc2_muxmask, .funcmask = BIT(5), .funcval = BIT(5), }; static const unsigned sdmmc2_pins[] = { 66, 67 }; static const struct sirfsoc_muxmask cko0_muxmask[] = { { .group = 2, .mask = BIT(14), }, }; static const struct sirfsoc_padmux cko0_padmux = { .muxmask_counts = ARRAY_SIZE(cko0_muxmask), .muxmask = cko0_muxmask, }; static const unsigned cko0_pins[] = { 78 }; static const struct sirfsoc_muxmask vip_muxmask[] = { { .group = 2, .mask = BIT(15) | BIT(16) | BIT(17) | BIT(18) | BIT(19) | BIT(20) | BIT(21) | BIT(22) | BIT(23) | BIT(24) | BIT(25), }, }; static const struct sirfsoc_padmux vip_padmux = { .muxmask_counts = ARRAY_SIZE(vip_muxmask), .muxmask = vip_muxmask, .funcmask = BIT(0), .funcval = 0, }; static const unsigned vip_pins[] = { 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89 }; static const struct sirfsoc_muxmask i2c0_muxmask[] = { { .group = 2, .mask = BIT(26) | BIT(27), }, }; static const struct sirfsoc_padmux i2c0_padmux = { .muxmask_counts = ARRAY_SIZE(i2c0_muxmask), .muxmask = i2c0_muxmask, }; static const unsigned i2c0_pins[] = { 90, 91 }; static const struct sirfsoc_muxmask i2c1_muxmask[] = { { .group = 0, .mask = BIT(13) | BIT(15), }, }; static const struct sirfsoc_padmux i2c1_padmux = { .muxmask_counts = ARRAY_SIZE(i2c1_muxmask), .muxmask = i2c1_muxmask, }; static const unsigned i2c1_pins[] = { 13, 15 }; static const struct sirfsoc_muxmask viprom_muxmask[] = { { .group = 2, .mask = BIT(15) | BIT(16) | BIT(17) | BIT(18) | BIT(19) | BIT(20) | BIT(21) | BIT(22) | BIT(23) | BIT(24) | BIT(25), }, { .group = 0, .mask = BIT(12), }, }; static const struct sirfsoc_padmux viprom_padmux = { .muxmask_counts = ARRAY_SIZE(viprom_muxmask), .muxmask = viprom_muxmask, .funcmask = BIT(0), .funcval = BIT(0), }; static const unsigned viprom_pins[] = { 12, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89 }; static const struct sirfsoc_muxmask pwm0_muxmask[] = { { .group = 0, .mask = BIT(4), }, }; static const struct sirfsoc_padmux pwm0_padmux = { .muxmask_counts = ARRAY_SIZE(pwm0_muxmask), .muxmask = pwm0_muxmask, .funcmask = BIT(12), .funcval = 0, }; static const unsigned pwm0_pins[] = { 4 }; static const struct sirfsoc_muxmask pwm1_muxmask[] = { { .group = 0, .mask = BIT(5), }, }; static const struct sirfsoc_padmux pwm1_padmux = { .muxmask_counts = ARRAY_SIZE(pwm1_muxmask), .muxmask = pwm1_muxmask, }; static const unsigned pwm1_pins[] = { 5 }; static const struct sirfsoc_muxmask pwm2_muxmask[] = { { .group = 0, .mask = BIT(6), }, }; static const struct sirfsoc_padmux pwm2_padmux = { .muxmask_counts = ARRAY_SIZE(pwm2_muxmask), .muxmask = pwm2_muxmask, }; static const unsigned pwm2_pins[] = { 6 }; static const struct sirfsoc_muxmask pwm3_muxmask[] = { { .group = 0, .mask = BIT(7), }, }; static const struct sirfsoc_padmux pwm3_padmux = { .muxmask_counts = ARRAY_SIZE(pwm3_muxmask), .muxmask = pwm3_muxmask, }; static const unsigned pwm3_pins[] = { 7 }; static const struct sirfsoc_muxmask warm_rst_muxmask[] = { { .group = 0, .mask = BIT(8), }, }; static const struct sirfsoc_padmux warm_rst_padmux = { .muxmask_counts = ARRAY_SIZE(warm_rst_muxmask), .muxmask = warm_rst_muxmask, }; static const unsigned warm_rst_pins[] = { 8 }; static const struct sirfsoc_muxmask usb0_utmi_drvbus_muxmask[] = { { .group = 1, .mask = BIT(22), }, }; static const struct sirfsoc_padmux usb0_utmi_drvbus_padmux = { .muxmask_counts = ARRAY_SIZE(usb0_utmi_drvbus_muxmask), .muxmask = usb0_utmi_drvbus_muxmask, .funcmask = BIT(6), .funcval = BIT(6), /* refer to PAD_UTMI_DRVVBUS0_ENABLE */ }; static const unsigned usb0_utmi_drvbus_pins[] = { 54 }; static const struct sirfsoc_muxmask usb1_utmi_drvbus_muxmask[] = { { .group = 1, .mask = BIT(27), }, }; static const struct sirfsoc_padmux usb1_utmi_drvbus_padmux = { .muxmask_counts = ARRAY_SIZE(usb1_utmi_drvbus_muxmask), .muxmask = usb1_utmi_drvbus_muxmask, .funcmask = BIT(11), .funcval = BIT(11), /* refer to PAD_UTMI_DRVVBUS1_ENABLE */ }; static const unsigned usb1_utmi_drvbus_pins[] = { 59 }; static const struct sirfsoc_muxmask pulse_count_muxmask[] = { { .group = 0, .mask = BIT(9) | BIT(10) | BIT(11), }, }; static const struct sirfsoc_padmux pulse_count_padmux = { .muxmask_counts = ARRAY_SIZE(pulse_count_muxmask), .muxmask = pulse_count_muxmask, }; static const unsigned pulse_count_pins[] = { 9, 10, 11 }; #define SIRFSOC_PIN_GROUP(n, p) \ { \ .name = n, \ .pins = p, \ .num_pins = ARRAY_SIZE(p), \ } static const struct sirfsoc_pin_group sirfsoc_pin_groups[] = { SIRFSOC_PIN_GROUP("lcd_16bitsgrp", lcd_16bits_pins), SIRFSOC_PIN_GROUP("lcd_18bitsgrp", lcd_18bits_pins), SIRFSOC_PIN_GROUP("lcd_24bitsgrp", lcd_24bits_pins), SIRFSOC_PIN_GROUP("lcdrom_grp", lcdrom_pins), SIRFSOC_PIN_GROUP("uart0grp", uart0_pins), SIRFSOC_PIN_GROUP("uart1grp", uart1_pins), SIRFSOC_PIN_GROUP("uart2grp", uart2_pins), SIRFSOC_PIN_GROUP("uart2_nostreamctrlgrp", uart2_nostreamctrl_pins), SIRFSOC_PIN_GROUP("usp0grp", usp0_pins), SIRFSOC_PIN_GROUP("usp1grp", usp1_pins), SIRFSOC_PIN_GROUP("usp2grp", usp2_pins), SIRFSOC_PIN_GROUP("i2c0grp", i2c0_pins), SIRFSOC_PIN_GROUP("i2c1grp", i2c1_pins), SIRFSOC_PIN_GROUP("pwm0grp", pwm0_pins), SIRFSOC_PIN_GROUP("pwm1grp", pwm1_pins), SIRFSOC_PIN_GROUP("pwm2grp", pwm2_pins), SIRFSOC_PIN_GROUP("pwm3grp", pwm3_pins), SIRFSOC_PIN_GROUP("vipgrp", vip_pins), SIRFSOC_PIN_GROUP("vipromgrp", viprom_pins), SIRFSOC_PIN_GROUP("warm_rstgrp", warm_rst_pins), SIRFSOC_PIN_GROUP("cko0_rstgrp", cko0_pins), SIRFSOC_PIN_GROUP("cko1_rstgrp", cko1_pins), SIRFSOC_PIN_GROUP("sdmmc0grp", sdmmc0_pins), SIRFSOC_PIN_GROUP("sdmmc1grp", sdmmc1_pins), SIRFSOC_PIN_GROUP("sdmmc2grp", sdmmc2_pins), SIRFSOC_PIN_GROUP("sdmmc3grp", sdmmc3_pins), SIRFSOC_PIN_GROUP("sdmmc4grp", sdmmc4_pins), SIRFSOC_PIN_GROUP("sdmmc5grp", sdmmc5_pins), SIRFSOC_PIN_GROUP("usb0_utmi_drvbusgrp", usb0_utmi_drvbus_pins), SIRFSOC_PIN_GROUP("usb1_utmi_drvbusgrp", usb1_utmi_drvbus_pins), SIRFSOC_PIN_GROUP("pulse_countgrp", pulse_count_pins), SIRFSOC_PIN_GROUP("i2sgrp", i2s_pins), SIRFSOC_PIN_GROUP("ac97grp", ac97_pins), SIRFSOC_PIN_GROUP("nandgrp", nand_pins), SIRFSOC_PIN_GROUP("spi0grp", spi0_pins), SIRFSOC_PIN_GROUP("spi1grp", spi1_pins), SIRFSOC_PIN_GROUP("gpsgrp", gps_pins), }; static int sirfsoc_get_groups_count(struct pinctrl_dev *pctldev) { return ARRAY_SIZE(sirfsoc_pin_groups); } static const char *sirfsoc_get_group_name(struct pinctrl_dev *pctldev, unsigned selector) { return sirfsoc_pin_groups[selector].name; } static int sirfsoc_get_group_pins(struct pinctrl_dev *pctldev, unsigned selector, const unsigned **pins, unsigned *num_pins) { *pins = sirfsoc_pin_groups[selector].pins; *num_pins = sirfsoc_pin_groups[selector].num_pins; return 0; } static void sirfsoc_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s, unsigned offset) { seq_printf(s, " " DRIVER_NAME); } static struct pinctrl_ops sirfsoc_pctrl_ops = { .get_groups_count = sirfsoc_get_groups_count, .get_group_name = sirfsoc_get_group_name, .get_group_pins = sirfsoc_get_group_pins, .pin_dbg_show = sirfsoc_pin_dbg_show, }; struct sirfsoc_pmx_func { const char *name; const char * const *groups; const unsigned num_groups; const struct sirfsoc_padmux *padmux; }; static const char * const lcd_16bitsgrp[] = { "lcd_16bitsgrp" }; static const char * const lcd_18bitsgrp[] = { "lcd_18bitsgrp" }; static const char * const lcd_24bitsgrp[] = { "lcd_24bitsgrp" }; static const char * const lcdromgrp[] = { "lcdromgrp" }; static const char * const uart0grp[] = { "uart0grp" }; static const char * const uart1grp[] = { "uart1grp" }; static const char * const uart2grp[] = { "uart2grp" }; static const char * const uart2_nostreamctrlgrp[] = { "uart2_nostreamctrlgrp" }; static const char * const usp0grp[] = { "usp0grp" }; static const char * const usp1grp[] = { "usp1grp" }; static const char * const usp2grp[] = { "usp2grp" }; static const char * const i2c0grp[] = { "i2c0grp" }; static const char * const i2c1grp[] = { "i2c1grp" }; static const char * const pwm0grp[] = { "pwm0grp" }; static const char * const pwm1grp[] = { "pwm1grp" }; static const char * const pwm2grp[] = { "pwm2grp" }; static const char * const pwm3grp[] = { "pwm3grp" }; static const char * const vipgrp[] = { "vipgrp" }; static const char * const vipromgrp[] = { "vipromgrp" }; static const char * const warm_rstgrp[] = { "warm_rstgrp" }; static const char * const cko0grp[] = { "cko0grp" }; static const char * const cko1grp[] = { "cko1grp" }; static const char * const sdmmc0grp[] = { "sdmmc0grp" }; static const char * const sdmmc1grp[] = { "sdmmc1grp" }; static const char * const sdmmc2grp[] = { "sdmmc2grp" }; static const char * const sdmmc3grp[] = { "sdmmc3grp" }; static const char * const sdmmc4grp[] = { "sdmmc4grp" }; static const char * const sdmmc5grp[] = { "sdmmc5grp" }; static const char * const usb0_utmi_drvbusgrp[] = { "usb0_utmi_drvbusgrp" }; static const char * const usb1_utmi_drvbusgrp[] = { "usb1_utmi_drvbusgrp" }; static const char * const pulse_countgrp[] = { "pulse_countgrp" }; static const char * const i2sgrp[] = { "i2sgrp" }; static const char * const ac97grp[] = { "ac97grp" }; static const char * const nandgrp[] = { "nandgrp" }; static const char * const spi0grp[] = { "spi0grp" }; static const char * const spi1grp[] = { "spi1grp" }; static const char * const gpsgrp[] = { "gpsgrp" }; #define SIRFSOC_PMX_FUNCTION(n, g, m) \ { \ .name = n, \ .groups = g, \ .num_groups = ARRAY_SIZE(g), \ .padmux = &m, \ } static const struct sirfsoc_pmx_func sirfsoc_pmx_functions[] = { SIRFSOC_PMX_FUNCTION("lcd_16bits", lcd_16bitsgrp, lcd_16bits_padmux), SIRFSOC_PMX_FUNCTION("lcd_18bits", lcd_18bitsgrp, lcd_18bits_padmux), SIRFSOC_PMX_FUNCTION("lcd_24bits", lcd_24bitsgrp, lcd_24bits_padmux), SIRFSOC_PMX_FUNCTION("lcdrom", lcdromgrp, lcdrom_padmux), SIRFSOC_PMX_FUNCTION("uart0", uart0grp, uart0_padmux), SIRFSOC_PMX_FUNCTION("uart1", uart1grp, uart1_padmux), SIRFSOC_PMX_FUNCTION("uart2", uart2grp, uart2_padmux), SIRFSOC_PMX_FUNCTION("uart2_nostreamctrl", uart2_nostreamctrlgrp, uart2_nostreamctrl_padmux), SIRFSOC_PMX_FUNCTION("usp0", usp0grp, usp0_padmux), SIRFSOC_PMX_FUNCTION("usp1", usp1grp, usp1_padmux), SIRFSOC_PMX_FUNCTION("usp2", usp2grp, usp2_padmux), SIRFSOC_PMX_FUNCTION("i2c0", i2c0grp, i2c0_padmux), SIRFSOC_PMX_FUNCTION("i2c1", i2c1grp, i2c1_padmux), SIRFSOC_PMX_FUNCTION("pwm0", pwm0grp, pwm0_padmux), SIRFSOC_PMX_FUNCTION("pwm1", pwm1grp, pwm1_padmux), SIRFSOC_PMX_FUNCTION("pwm2", pwm2grp, pwm2_padmux), SIRFSOC_PMX_FUNCTION("pwm3", pwm3grp, pwm3_padmux), SIRFSOC_PMX_FUNCTION("vip", vipgrp, vip_padmux), SIRFSOC_PMX_FUNCTION("viprom", vipromgrp, viprom_padmux), SIRFSOC_PMX_FUNCTION("warm_rst", warm_rstgrp, warm_rst_padmux), SIRFSOC_PMX_FUNCTION("cko0", cko0grp, cko0_padmux), SIRFSOC_PMX_FUNCTION("cko1", cko1grp, cko1_padmux), SIRFSOC_PMX_FUNCTION("sdmmc0", sdmmc0grp, sdmmc0_padmux), SIRFSOC_PMX_FUNCTION("sdmmc1", sdmmc1grp, sdmmc1_padmux), SIRFSOC_PMX_FUNCTION("sdmmc2", sdmmc2grp, sdmmc2_padmux), SIRFSOC_PMX_FUNCTION("sdmmc3", sdmmc3grp, sdmmc3_padmux), SIRFSOC_PMX_FUNCTION("sdmmc4", sdmmc4grp, sdmmc4_padmux), SIRFSOC_PMX_FUNCTION("sdmmc5", sdmmc5grp, sdmmc5_padmux), SIRFSOC_PMX_FUNCTION("usb0_utmi_drvbus", usb0_utmi_drvbusgrp, usb0_utmi_drvbus_padmux), SIRFSOC_PMX_FUNCTION("usb1_utmi_drvbus", usb1_utmi_drvbusgrp, usb1_utmi_drvbus_padmux), SIRFSOC_PMX_FUNCTION("pulse_count", pulse_countgrp, pulse_count_padmux), SIRFSOC_PMX_FUNCTION("i2s", i2sgrp, i2s_padmux), SIRFSOC_PMX_FUNCTION("ac97", ac97grp, ac97_padmux), SIRFSOC_PMX_FUNCTION("nand", nandgrp, nand_padmux), SIRFSOC_PMX_FUNCTION("spi0", spi0grp, spi0_padmux), SIRFSOC_PMX_FUNCTION("spi1", spi1grp, spi1_padmux), SIRFSOC_PMX_FUNCTION("gps", gpsgrp, gps_padmux), }; static void sirfsoc_pinmux_endisable(struct sirfsoc_pmx *spmx, unsigned selector, bool enable) { int i; const struct sirfsoc_padmux *mux = sirfsoc_pmx_functions[selector].padmux; const struct sirfsoc_muxmask *mask = mux->muxmask; for (i = 0; i < mux->muxmask_counts; i++) { u32 muxval; muxval = readl(spmx->gpio_virtbase + SIRFSOC_GPIO_PAD_EN(mask[i].group)); if (enable) muxval = muxval & ~mask[i].mask; else muxval = muxval | mask[i].mask; writel(muxval, spmx->gpio_virtbase + SIRFSOC_GPIO_PAD_EN(mask[i].group)); } if (mux->funcmask && enable) { u32 func_en_val; func_en_val = readl(spmx->rsc_virtbase + SIRFSOC_RSC_PIN_MUX); func_en_val = (func_en_val & ~mux->funcmask) | (mux-> funcval); writel(func_en_val, spmx->rsc_virtbase + SIRFSOC_RSC_PIN_MUX); } } static int sirfsoc_pinmux_enable(struct pinctrl_dev *pmxdev, unsigned selector, unsigned group) { struct sirfsoc_pmx *spmx; spmx = pinctrl_dev_get_drvdata(pmxdev); sirfsoc_pinmux_endisable(spmx, selector, true); return 0; } static void sirfsoc_pinmux_disable(struct pinctrl_dev *pmxdev, unsigned selector, unsigned group) { struct sirfsoc_pmx *spmx; spmx = pinctrl_dev_get_drvdata(pmxdev); sirfsoc_pinmux_endisable(spmx, selector, false); } static int sirfsoc_pinmux_get_funcs_count(struct pinctrl_dev *pmxdev) { return ARRAY_SIZE(sirfsoc_pmx_functions); } static const char *sirfsoc_pinmux_get_func_name(struct pinctrl_dev *pctldev, unsigned selector) { return sirfsoc_pmx_functions[selector].name; } static int sirfsoc_pinmux_get_groups(struct pinctrl_dev *pctldev, unsigned selector, const char * const **groups, unsigned * const num_groups) { *groups = sirfsoc_pmx_functions[selector].groups; *num_groups = sirfsoc_pmx_functions[selector].num_groups; return 0; } static int sirfsoc_pinmux_request_gpio(struct pinctrl_dev *pmxdev, struct pinctrl_gpio_range *range, unsigned offset) { struct sirfsoc_pmx *spmx; int group = range->id; u32 muxval; spmx = pinctrl_dev_get_drvdata(pmxdev); muxval = readl(spmx->gpio_virtbase + SIRFSOC_GPIO_PAD_EN(group)); muxval = muxval | (1 << (offset - range->pin_base)); writel(muxval, spmx->gpio_virtbase + SIRFSOC_GPIO_PAD_EN(group)); return 0; } static struct pinmux_ops sirfsoc_pinmux_ops = { .enable = sirfsoc_pinmux_enable, .disable = sirfsoc_pinmux_disable, .get_functions_count = sirfsoc_pinmux_get_funcs_count, .get_function_name = sirfsoc_pinmux_get_func_name, .get_function_groups = sirfsoc_pinmux_get_groups, .gpio_request_enable = sirfsoc_pinmux_request_gpio, }; static struct pinctrl_desc sirfsoc_pinmux_desc = { .name = DRIVER_NAME, .pins = sirfsoc_pads, .npins = ARRAY_SIZE(sirfsoc_pads), .pctlops = &sirfsoc_pctrl_ops, .pmxops = &sirfsoc_pinmux_ops, .owner = THIS_MODULE, }; /* * Todo: bind irq_chip to every pinctrl_gpio_range */ static struct pinctrl_gpio_range sirfsoc_gpio_ranges[] = { { .name = "sirfsoc-gpio*", .id = 0, .base = 0, .pin_base = 0, .npins = 32, }, { .name = "sirfsoc-gpio*", .id = 1, .base = 32, .pin_base = 32, .npins = 32, }, { .name = "sirfsoc-gpio*", .id = 2, .base = 64, .pin_base = 64, .npins = 32, }, { .name = "sirfsoc-gpio*", .id = 3, .base = 96, .pin_base = 96, .npins = 19, }, }; static void __iomem *sirfsoc_rsc_of_iomap(void) { const struct of_device_id rsc_ids[] = { { .compatible = "sirf,prima2-rsc" }, {} }; struct device_node *np; np = of_find_matching_node(NULL, rsc_ids); if (!np) panic("unable to find compatible rsc node in dtb\n"); return of_iomap(np, 0); } static int __devinit sirfsoc_pinmux_probe(struct platform_device *pdev) { int ret; struct sirfsoc_pmx *spmx; struct device_node *np = pdev->dev.of_node; int i; /* Create state holders etc for this driver */ spmx = devm_kzalloc(&pdev->dev, sizeof(*spmx), GFP_KERNEL); if (!spmx) return -ENOMEM; spmx->dev = &pdev->dev; platform_set_drvdata(pdev, spmx); spmx->gpio_virtbase = of_iomap(np, 0); if (!spmx->gpio_virtbase) { ret = -ENOMEM; dev_err(&pdev->dev, "can't map gpio registers\n"); goto out_no_gpio_remap; } spmx->rsc_virtbase = sirfsoc_rsc_of_iomap(); if (!spmx->rsc_virtbase) { ret = -ENOMEM; dev_err(&pdev->dev, "can't map rsc registers\n"); goto out_no_rsc_remap; } /* Now register the pin controller and all pins it handles */ spmx->pmx = pinctrl_register(&sirfsoc_pinmux_desc, &pdev->dev, spmx); if (!spmx->pmx) { dev_err(&pdev->dev, "could not register SIRFSOC pinmux driver\n"); ret = -EINVAL; goto out_no_pmx; } for (i = 0; i < ARRAY_SIZE(sirfsoc_gpio_ranges); i++) { sirfsoc_gpio_ranges[i].gc = &sgpio_bank[i].chip.gc; pinctrl_add_gpio_range(spmx->pmx, &sirfsoc_gpio_ranges[i]); } dev_info(&pdev->dev, "initialized SIRFSOC pinmux driver\n"); return 0; out_no_pmx: iounmap(spmx->rsc_virtbase); out_no_rsc_remap: iounmap(spmx->gpio_virtbase); out_no_gpio_remap: platform_set_drvdata(pdev, NULL); return ret; } static const struct of_device_id pinmux_ids[] __devinitconst = { { .compatible = "sirf,prima2-gpio-pinmux" }, {} }; static struct platform_driver sirfsoc_pinmux_driver = { .driver = { .name = DRIVER_NAME, .owner = THIS_MODULE, .of_match_table = pinmux_ids, }, .probe = sirfsoc_pinmux_probe, }; static int __init sirfsoc_pinmux_init(void) { return platform_driver_register(&sirfsoc_pinmux_driver); } arch_initcall(sirfsoc_pinmux_init); static inline int sirfsoc_gpio_to_irq(struct gpio_chip *chip, unsigned offset) { struct sirfsoc_gpio_bank *bank = container_of(to_of_mm_gpio_chip(chip), struct sirfsoc_gpio_bank, chip); return irq_find_mapping(bank->domain, offset); } static inline int sirfsoc_gpio_to_offset(unsigned int gpio) { return gpio % SIRFSOC_GPIO_BANK_SIZE; } static inline struct sirfsoc_gpio_bank *sirfsoc_gpio_to_bank(unsigned int gpio) { return &sgpio_bank[gpio / SIRFSOC_GPIO_BANK_SIZE]; } void sirfsoc_gpio_set_pull(unsigned gpio, unsigned mode) { struct sirfsoc_gpio_bank *bank = sirfsoc_gpio_to_bank(gpio); int idx = sirfsoc_gpio_to_offset(gpio); u32 val, offset; unsigned long flags; offset = SIRFSOC_GPIO_CTRL(bank->id, idx); spin_lock_irqsave(&sgpio_lock, flags); val = readl(bank->chip.regs + offset); switch (mode) { case SIRFSOC_GPIO_PULL_NONE: val &= ~SIRFSOC_GPIO_CTL_PULL_MASK; break; case SIRFSOC_GPIO_PULL_UP: val |= SIRFSOC_GPIO_CTL_PULL_MASK; val |= SIRFSOC_GPIO_CTL_PULL_HIGH; break; case SIRFSOC_GPIO_PULL_DOWN: val |= SIRFSOC_GPIO_CTL_PULL_MASK; val &= ~SIRFSOC_GPIO_CTL_PULL_HIGH; break; default: break; } writel(val, bank->chip.regs + offset); spin_unlock_irqrestore(&sgpio_lock, flags); } EXPORT_SYMBOL(sirfsoc_gpio_set_pull); static inline struct sirfsoc_gpio_bank *sirfsoc_irqchip_to_bank(struct gpio_chip *chip) { return container_of(to_of_mm_gpio_chip(chip), struct sirfsoc_gpio_bank, chip); } static void sirfsoc_gpio_irq_ack(struct irq_data *d) { struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d); int idx = d->hwirq % SIRFSOC_GPIO_BANK_SIZE; u32 val, offset; unsigned long flags; offset = SIRFSOC_GPIO_CTRL(bank->id, idx); spin_lock_irqsave(&sgpio_lock, flags); val = readl(bank->chip.regs + offset); writel(val, bank->chip.regs + offset); spin_unlock_irqrestore(&sgpio_lock, flags); } static void __sirfsoc_gpio_irq_mask(struct sirfsoc_gpio_bank *bank, int idx) { u32 val, offset; unsigned long flags; offset = SIRFSOC_GPIO_CTRL(bank->id, idx); spin_lock_irqsave(&sgpio_lock, flags); val = readl(bank->chip.regs + offset); val &= ~SIRFSOC_GPIO_CTL_INTR_EN_MASK; val &= ~SIRFSOC_GPIO_CTL_INTR_STS_MASK; writel(val, bank->chip.regs + offset); spin_unlock_irqrestore(&sgpio_lock, flags); } static void sirfsoc_gpio_irq_mask(struct irq_data *d) { struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d); __sirfsoc_gpio_irq_mask(bank, d->hwirq % SIRFSOC_GPIO_BANK_SIZE); } static void sirfsoc_gpio_irq_unmask(struct irq_data *d) { struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d); int idx = d->hwirq % SIRFSOC_GPIO_BANK_SIZE; u32 val, offset; unsigned long flags; offset = SIRFSOC_GPIO_CTRL(bank->id, idx); spin_lock_irqsave(&sgpio_lock, flags); val = readl(bank->chip.regs + offset); val &= ~SIRFSOC_GPIO_CTL_INTR_STS_MASK; val |= SIRFSOC_GPIO_CTL_INTR_EN_MASK; writel(val, bank->chip.regs + offset); spin_unlock_irqrestore(&sgpio_lock, flags); } static int sirfsoc_gpio_irq_type(struct irq_data *d, unsigned type) { struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d); int idx = d->hwirq % SIRFSOC_GPIO_BANK_SIZE; u32 val, offset; unsigned long flags; offset = SIRFSOC_GPIO_CTRL(bank->id, idx); spin_lock_irqsave(&sgpio_lock, flags); val = readl(bank->chip.regs + offset); val &= ~SIRFSOC_GPIO_CTL_INTR_STS_MASK; switch (type) { case IRQ_TYPE_NONE: break; case IRQ_TYPE_EDGE_RISING: val |= SIRFSOC_GPIO_CTL_INTR_HIGH_MASK | SIRFSOC_GPIO_CTL_INTR_TYPE_MASK; val &= ~SIRFSOC_GPIO_CTL_INTR_LOW_MASK; break; case IRQ_TYPE_EDGE_FALLING: val &= ~SIRFSOC_GPIO_CTL_INTR_HIGH_MASK; val |= SIRFSOC_GPIO_CTL_INTR_LOW_MASK | SIRFSOC_GPIO_CTL_INTR_TYPE_MASK; break; case IRQ_TYPE_EDGE_BOTH: val |= SIRFSOC_GPIO_CTL_INTR_HIGH_MASK | SIRFSOC_GPIO_CTL_INTR_LOW_MASK | SIRFSOC_GPIO_CTL_INTR_TYPE_MASK; break; case IRQ_TYPE_LEVEL_LOW: val &= ~(SIRFSOC_GPIO_CTL_INTR_HIGH_MASK | SIRFSOC_GPIO_CTL_INTR_TYPE_MASK); val |= SIRFSOC_GPIO_CTL_INTR_LOW_MASK; break; case IRQ_TYPE_LEVEL_HIGH: val |= SIRFSOC_GPIO_CTL_INTR_HIGH_MASK; val &= ~(SIRFSOC_GPIO_CTL_INTR_LOW_MASK | SIRFSOC_GPIO_CTL_INTR_TYPE_MASK); break; } writel(val, bank->chip.regs + offset); spin_unlock_irqrestore(&sgpio_lock, flags); return 0; } static struct irq_chip sirfsoc_irq_chip = { .name = "sirf-gpio-irq", .irq_ack = sirfsoc_gpio_irq_ack, .irq_mask = sirfsoc_gpio_irq_mask, .irq_unmask = sirfsoc_gpio_irq_unmask, .irq_set_type = sirfsoc_gpio_irq_type, }; static void sirfsoc_gpio_handle_irq(unsigned int irq, struct irq_desc *desc) { struct sirfsoc_gpio_bank *bank = irq_get_handler_data(irq); u32 status, ctrl; int idx = 0; unsigned int first_irq; status = readl(bank->chip.regs + SIRFSOC_GPIO_INT_STATUS(bank->id)); if (!status) { printk(KERN_WARNING "%s: gpio id %d status %#x no interrupt is flaged\n", __func__, bank->id, status); handle_bad_irq(irq, desc); return; } first_irq = bank->domain->revmap_data.legacy.first_irq; while (status) { ctrl = readl(bank->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, idx)); /* * Here we must check whether the corresponding GPIO's interrupt * has been enabled, otherwise just skip it */ if ((status & 0x1) && (ctrl & SIRFSOC_GPIO_CTL_INTR_EN_MASK)) { pr_debug("%s: gpio id %d idx %d happens\n", __func__, bank->id, idx); generic_handle_irq(first_irq + idx); } idx++; status = status >> 1; } } static inline void sirfsoc_gpio_set_input(struct sirfsoc_gpio_bank *bank, unsigned ctrl_offset) { u32 val; val = readl(bank->chip.regs + ctrl_offset); val &= ~SIRFSOC_GPIO_CTL_OUT_EN_MASK; writel(val, bank->chip.regs + ctrl_offset); } static int sirfsoc_gpio_request(struct gpio_chip *chip, unsigned offset) { struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip); unsigned long flags; if (pinctrl_request_gpio(chip->base + offset)) return -ENODEV; spin_lock_irqsave(&bank->lock, flags); /* * default status: * set direction as input and mask irq */ sirfsoc_gpio_set_input(bank, SIRFSOC_GPIO_CTRL(bank->id, offset)); __sirfsoc_gpio_irq_mask(bank, offset); spin_unlock_irqrestore(&bank->lock, flags); return 0; } static void sirfsoc_gpio_free(struct gpio_chip *chip, unsigned offset) { struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip); unsigned long flags; spin_lock_irqsave(&bank->lock, flags); __sirfsoc_gpio_irq_mask(bank, offset); sirfsoc_gpio_set_input(bank, SIRFSOC_GPIO_CTRL(bank->id, offset)); spin_unlock_irqrestore(&bank->lock, flags); pinctrl_free_gpio(chip->base + offset); } static int sirfsoc_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) { struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip); int idx = sirfsoc_gpio_to_offset(gpio); unsigned long flags; unsigned offset; offset = SIRFSOC_GPIO_CTRL(bank->id, idx); spin_lock_irqsave(&bank->lock, flags); sirfsoc_gpio_set_input(bank, offset); spin_unlock_irqrestore(&bank->lock, flags); return 0; } static inline void sirfsoc_gpio_set_output(struct sirfsoc_gpio_bank *bank, unsigned offset, int value) { u32 out_ctrl; unsigned long flags; spin_lock_irqsave(&bank->lock, flags); out_ctrl = readl(bank->chip.regs + offset); if (value) out_ctrl |= SIRFSOC_GPIO_CTL_DATAOUT_MASK; else out_ctrl &= ~SIRFSOC_GPIO_CTL_DATAOUT_MASK; out_ctrl &= ~SIRFSOC_GPIO_CTL_INTR_EN_MASK; out_ctrl |= SIRFSOC_GPIO_CTL_OUT_EN_MASK; writel(out_ctrl, bank->chip.regs + offset); spin_unlock_irqrestore(&bank->lock, flags); } static int sirfsoc_gpio_direction_output(struct gpio_chip *chip, unsigned gpio, int value) { struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip); int idx = sirfsoc_gpio_to_offset(gpio); u32 offset; unsigned long flags; offset = SIRFSOC_GPIO_CTRL(bank->id, idx); spin_lock_irqsave(&sgpio_lock, flags); sirfsoc_gpio_set_output(bank, offset, value); spin_unlock_irqrestore(&sgpio_lock, flags); return 0; } static int sirfsoc_gpio_get_value(struct gpio_chip *chip, unsigned offset) { struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip); u32 val; unsigned long flags; spin_lock_irqsave(&bank->lock, flags); val = readl(bank->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, offset)); spin_unlock_irqrestore(&bank->lock, flags); return !!(val & SIRFSOC_GPIO_CTL_DATAIN_MASK); } static void sirfsoc_gpio_set_value(struct gpio_chip *chip, unsigned offset, int value) { struct sirfsoc_gpio_bank *bank = sirfsoc_irqchip_to_bank(chip); u32 ctrl; unsigned long flags; spin_lock_irqsave(&bank->lock, flags); ctrl = readl(bank->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, offset)); if (value) ctrl |= SIRFSOC_GPIO_CTL_DATAOUT_MASK; else ctrl &= ~SIRFSOC_GPIO_CTL_DATAOUT_MASK; writel(ctrl, bank->chip.regs + SIRFSOC_GPIO_CTRL(bank->id, offset)); spin_unlock_irqrestore(&bank->lock, flags); } int sirfsoc_gpio_irq_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hwirq) { struct sirfsoc_gpio_bank *bank = d->host_data; if (!bank) return -EINVAL; irq_set_chip(irq, &sirfsoc_irq_chip); irq_set_handler(irq, handle_level_irq); irq_set_chip_data(irq, bank); set_irq_flags(irq, IRQF_VALID); return 0; } const struct irq_domain_ops sirfsoc_gpio_irq_simple_ops = { .map = sirfsoc_gpio_irq_map, .xlate = irq_domain_xlate_twocell, }; static int __devinit sirfsoc_gpio_probe(struct device_node *np) { int i, err = 0; struct sirfsoc_gpio_bank *bank; void *regs; struct platform_device *pdev; pdev = of_find_device_by_node(np); if (!pdev) return -ENODEV; regs = of_iomap(np, 0); if (!regs) return -ENOMEM; for (i = 0; i < SIRFSOC_GPIO_NO_OF_BANKS; i++) { bank = &sgpio_bank[i]; spin_lock_init(&bank->lock); bank->chip.gc.request = sirfsoc_gpio_request; bank->chip.gc.free = sirfsoc_gpio_free; bank->chip.gc.direction_input = sirfsoc_gpio_direction_input; bank->chip.gc.get = sirfsoc_gpio_get_value; bank->chip.gc.direction_output = sirfsoc_gpio_direction_output; bank->chip.gc.set = sirfsoc_gpio_set_value; bank->chip.gc.to_irq = sirfsoc_gpio_to_irq; bank->chip.gc.base = i * SIRFSOC_GPIO_BANK_SIZE; bank->chip.gc.ngpio = SIRFSOC_GPIO_BANK_SIZE; bank->chip.gc.label = kstrdup(np->full_name, GFP_KERNEL); bank->chip.gc.of_node = np; bank->chip.regs = regs; bank->id = i; bank->parent_irq = platform_get_irq(pdev, i); if (bank->parent_irq < 0) { err = bank->parent_irq; goto out; } err = gpiochip_add(&bank->chip.gc); if (err) { pr_err("%s: error in probe function with status %d\n", np->full_name, err); goto out; } bank->domain = irq_domain_add_legacy(np, SIRFSOC_GPIO_BANK_SIZE, SIRFSOC_GPIO_IRQ_START + i * SIRFSOC_GPIO_BANK_SIZE, 0, &sirfsoc_gpio_irq_simple_ops, bank); if (!bank->domain) { pr_err("%s: Failed to create irqdomain\n", np->full_name); err = -ENOSYS; goto out; } irq_set_chained_handler(bank->parent_irq, sirfsoc_gpio_handle_irq); irq_set_handler_data(bank->parent_irq, bank); } return 0; out: iounmap(regs); return err; } static int __init sirfsoc_gpio_init(void) { struct device_node *np; np = of_find_matching_node(NULL, pinmux_ids); if (!np) return -ENODEV; return sirfsoc_gpio_probe(np); } subsys_initcall(sirfsoc_gpio_init); MODULE_AUTHOR("Rongjun Ying , " "Yuping Luo , " "Barry Song "); MODULE_DESCRIPTION("SIRFSOC pin control driver"); MODULE_LICENSE("GPL");