diff options
Diffstat (limited to 'drivers/spi/spi-lantiq-ssc.c')
| -rw-r--r-- | drivers/spi/spi-lantiq-ssc.c | 438 |
1 files changed, 222 insertions, 216 deletions
diff --git a/drivers/spi/spi-lantiq-ssc.c b/drivers/spi/spi-lantiq-ssc.c index 8a626f7fccea..d5976615d924 100644 --- a/drivers/spi/spi-lantiq-ssc.c +++ b/drivers/spi/spi-lantiq-ssc.c @@ -26,136 +26,140 @@ #include <lantiq_soc.h> #endif -#define SPI_RX_IRQ_NAME "spi_rx" -#define SPI_TX_IRQ_NAME "spi_tx" -#define SPI_ERR_IRQ_NAME "spi_err" -#define SPI_FRM_IRQ_NAME "spi_frm" - -#define SPI_CLC 0x00 -#define SPI_PISEL 0x04 -#define SPI_ID 0x08 -#define SPI_CON 0x10 -#define SPI_STAT 0x14 -#define SPI_WHBSTATE 0x18 -#define SPI_TB 0x20 -#define SPI_RB 0x24 -#define SPI_RXFCON 0x30 -#define SPI_TXFCON 0x34 -#define SPI_FSTAT 0x38 -#define SPI_BRT 0x40 -#define SPI_BRSTAT 0x44 -#define SPI_SFCON 0x60 -#define SPI_SFSTAT 0x64 -#define SPI_GPOCON 0x70 -#define SPI_GPOSTAT 0x74 -#define SPI_FPGO 0x78 -#define SPI_RXREQ 0x80 -#define SPI_RXCNT 0x84 -#define SPI_DMACON 0xec -#define SPI_IRNEN 0xf4 -#define SPI_IRNICR 0xf8 -#define SPI_IRNCR 0xfc - -#define SPI_CLC_SMC_S 16 /* Clock divider for sleep mode */ -#define SPI_CLC_SMC_M (0xFF << SPI_CLC_SMC_S) -#define SPI_CLC_RMC_S 8 /* Clock divider for normal run mode */ -#define SPI_CLC_RMC_M (0xFF << SPI_CLC_RMC_S) -#define SPI_CLC_DISS BIT(1) /* Disable status bit */ -#define SPI_CLC_DISR BIT(0) /* Disable request bit */ - -#define SPI_ID_TXFS_S 24 /* Implemented TX FIFO size */ -#define SPI_ID_TXFS_M (0x3F << SPI_ID_TXFS_S) -#define SPI_ID_RXFS_S 16 /* Implemented RX FIFO size */ -#define SPI_ID_RXFS_M (0x3F << SPI_ID_RXFS_S) -#define SPI_ID_MOD_S 8 /* Module ID */ -#define SPI_ID_MOD_M (0xff << SPI_ID_MOD_S) -#define SPI_ID_CFG_S 5 /* DMA interface support */ -#define SPI_ID_CFG_M (1 << SPI_ID_CFG_S) -#define SPI_ID_REV_M 0x1F /* Hardware revision number */ - -#define SPI_CON_BM_S 16 /* Data width selection */ -#define SPI_CON_BM_M (0x1F << SPI_CON_BM_S) -#define SPI_CON_EM BIT(24) /* Echo mode */ -#define SPI_CON_IDLE BIT(23) /* Idle bit value */ -#define SPI_CON_ENBV BIT(22) /* Enable byte valid control */ -#define SPI_CON_RUEN BIT(12) /* Receive underflow error enable */ -#define SPI_CON_TUEN BIT(11) /* Transmit underflow error enable */ -#define SPI_CON_AEN BIT(10) /* Abort error enable */ -#define SPI_CON_REN BIT(9) /* Receive overflow error enable */ -#define SPI_CON_TEN BIT(8) /* Transmit overflow error enable */ -#define SPI_CON_LB BIT(7) /* Loopback control */ -#define SPI_CON_PO BIT(6) /* Clock polarity control */ -#define SPI_CON_PH BIT(5) /* Clock phase control */ -#define SPI_CON_HB BIT(4) /* Heading control */ -#define SPI_CON_RXOFF BIT(1) /* Switch receiver off */ -#define SPI_CON_TXOFF BIT(0) /* Switch transmitter off */ - -#define SPI_STAT_RXBV_S 28 -#define SPI_STAT_RXBV_M (0x7 << SPI_STAT_RXBV_S) -#define SPI_STAT_BSY BIT(13) /* Busy flag */ -#define SPI_STAT_RUE BIT(12) /* Receive underflow error flag */ -#define SPI_STAT_TUE BIT(11) /* Transmit underflow error flag */ -#define SPI_STAT_AE BIT(10) /* Abort error flag */ -#define SPI_STAT_RE BIT(9) /* Receive error flag */ -#define SPI_STAT_TE BIT(8) /* Transmit error flag */ -#define SPI_STAT_ME BIT(7) /* Mode error flag */ -#define SPI_STAT_MS BIT(1) /* Master/slave select bit */ -#define SPI_STAT_EN BIT(0) /* Enable bit */ -#define SPI_STAT_ERRORS (SPI_STAT_ME | SPI_STAT_TE | SPI_STAT_RE | \ - SPI_STAT_AE | SPI_STAT_TUE | SPI_STAT_RUE) - -#define SPI_WHBSTATE_SETTUE BIT(15) /* Set transmit underflow error flag */ -#define SPI_WHBSTATE_SETAE BIT(14) /* Set abort error flag */ -#define SPI_WHBSTATE_SETRE BIT(13) /* Set receive error flag */ -#define SPI_WHBSTATE_SETTE BIT(12) /* Set transmit error flag */ -#define SPI_WHBSTATE_CLRTUE BIT(11) /* Clear transmit underflow error flag */ -#define SPI_WHBSTATE_CLRAE BIT(10) /* Clear abort error flag */ -#define SPI_WHBSTATE_CLRRE BIT(9) /* Clear receive error flag */ -#define SPI_WHBSTATE_CLRTE BIT(8) /* Clear transmit error flag */ -#define SPI_WHBSTATE_SETME BIT(7) /* Set mode error flag */ -#define SPI_WHBSTATE_CLRME BIT(6) /* Clear mode error flag */ -#define SPI_WHBSTATE_SETRUE BIT(5) /* Set receive underflow error flag */ -#define SPI_WHBSTATE_CLRRUE BIT(4) /* Clear receive underflow error flag */ -#define SPI_WHBSTATE_SETMS BIT(3) /* Set master select bit */ -#define SPI_WHBSTATE_CLRMS BIT(2) /* Clear master select bit */ -#define SPI_WHBSTATE_SETEN BIT(1) /* Set enable bit (operational mode) */ -#define SPI_WHBSTATE_CLREN BIT(0) /* Clear enable bit (config mode */ -#define SPI_WHBSTATE_CLR_ERRORS (SPI_WHBSTATE_CLRRUE | SPI_WHBSTATE_CLRME | \ - SPI_WHBSTATE_CLRTE | SPI_WHBSTATE_CLRRE | \ - SPI_WHBSTATE_CLRAE | SPI_WHBSTATE_CLRTUE) - -#define SPI_RXFCON_RXFITL_S 8 /* FIFO interrupt trigger level */ -#define SPI_RXFCON_RXFITL_M (0x3F << SPI_RXFCON_RXFITL_S) -#define SPI_RXFCON_RXFLU BIT(1) /* FIFO flush */ -#define SPI_RXFCON_RXFEN BIT(0) /* FIFO enable */ - -#define SPI_TXFCON_TXFITL_S 8 /* FIFO interrupt trigger level */ -#define SPI_TXFCON_TXFITL_M (0x3F << SPI_TXFCON_TXFITL_S) -#define SPI_TXFCON_TXFLU BIT(1) /* FIFO flush */ -#define SPI_TXFCON_TXFEN BIT(0) /* FIFO enable */ - -#define SPI_FSTAT_RXFFL_S 0 -#define SPI_FSTAT_RXFFL_M (0x3f << SPI_FSTAT_RXFFL_S) -#define SPI_FSTAT_TXFFL_S 8 -#define SPI_FSTAT_TXFFL_M (0x3f << SPI_FSTAT_TXFFL_S) - -#define SPI_GPOCON_ISCSBN_S 8 -#define SPI_GPOCON_INVOUTN_S 0 - -#define SPI_FGPO_SETOUTN_S 8 -#define SPI_FGPO_CLROUTN_S 0 - -#define SPI_RXREQ_RXCNT_M 0xFFFF /* Receive count value */ -#define SPI_RXCNT_TODO_M 0xFFFF /* Recevie to-do value */ - -#define SPI_IRNEN_TFI BIT(4) /* TX finished interrupt */ -#define SPI_IRNEN_F BIT(3) /* Frame end interrupt request */ -#define SPI_IRNEN_E BIT(2) /* Error end interrupt request */ -#define SPI_IRNEN_T_XWAY BIT(1) /* Transmit end interrupt request */ -#define SPI_IRNEN_R_XWAY BIT(0) /* Receive end interrupt request */ -#define SPI_IRNEN_R_XRX BIT(1) /* Transmit end interrupt request */ -#define SPI_IRNEN_T_XRX BIT(0) /* Receive end interrupt request */ -#define SPI_IRNEN_ALL 0x1F +#define LTQ_SPI_RX_IRQ_NAME "spi_rx" +#define LTQ_SPI_TX_IRQ_NAME "spi_tx" +#define LTQ_SPI_ERR_IRQ_NAME "spi_err" +#define LTQ_SPI_FRM_IRQ_NAME "spi_frm" + +#define LTQ_SPI_CLC 0x00 +#define LTQ_SPI_PISEL 0x04 +#define LTQ_SPI_ID 0x08 +#define LTQ_SPI_CON 0x10 +#define LTQ_SPI_STAT 0x14 +#define LTQ_SPI_WHBSTATE 0x18 +#define LTQ_SPI_TB 0x20 +#define LTQ_SPI_RB 0x24 +#define LTQ_SPI_RXFCON 0x30 +#define LTQ_SPI_TXFCON 0x34 +#define LTQ_SPI_FSTAT 0x38 +#define LTQ_SPI_BRT 0x40 +#define LTQ_SPI_BRSTAT 0x44 +#define LTQ_SPI_SFCON 0x60 +#define LTQ_SPI_SFSTAT 0x64 +#define LTQ_SPI_GPOCON 0x70 +#define LTQ_SPI_GPOSTAT 0x74 +#define LTQ_SPI_FPGO 0x78 +#define LTQ_SPI_RXREQ 0x80 +#define LTQ_SPI_RXCNT 0x84 +#define LTQ_SPI_DMACON 0xec +#define LTQ_SPI_IRNEN 0xf4 +#define LTQ_SPI_IRNICR 0xf8 +#define LTQ_SPI_IRNCR 0xfc + +#define LTQ_SPI_CLC_SMC_S 16 /* Clock divider for sleep mode */ +#define LTQ_SPI_CLC_SMC_M (0xFF << LTQ_SPI_CLC_SMC_S) +#define LTQ_SPI_CLC_RMC_S 8 /* Clock divider for normal run mode */ +#define LTQ_SPI_CLC_RMC_M (0xFF << LTQ_SPI_CLC_RMC_S) +#define LTQ_SPI_CLC_DISS BIT(1) /* Disable status bit */ +#define LTQ_SPI_CLC_DISR BIT(0) /* Disable request bit */ + +#define LTQ_SPI_ID_TXFS_S 24 /* Implemented TX FIFO size */ +#define LTQ_SPI_ID_TXFS_M (0x3F << LTQ_SPI_ID_TXFS_S) +#define LTQ_SPI_ID_RXFS_S 16 /* Implemented RX FIFO size */ +#define LTQ_SPI_ID_RXFS_M (0x3F << LTQ_SPI_ID_RXFS_S) +#define LTQ_SPI_ID_MOD_S 8 /* Module ID */ +#define LTQ_SPI_ID_MOD_M (0xff << LTQ_SPI_ID_MOD_S) +#define LTQ_SPI_ID_CFG_S 5 /* DMA interface support */ +#define LTQ_SPI_ID_CFG_M (1 << LTQ_SPI_ID_CFG_S) +#define LTQ_SPI_ID_REV_M 0x1F /* Hardware revision number */ + +#define LTQ_SPI_CON_BM_S 16 /* Data width selection */ +#define LTQ_SPI_CON_BM_M (0x1F << LTQ_SPI_CON_BM_S) +#define LTQ_SPI_CON_EM BIT(24) /* Echo mode */ +#define LTQ_SPI_CON_IDLE BIT(23) /* Idle bit value */ +#define LTQ_SPI_CON_ENBV BIT(22) /* Enable byte valid control */ +#define LTQ_SPI_CON_RUEN BIT(12) /* Receive underflow error enable */ +#define LTQ_SPI_CON_TUEN BIT(11) /* Transmit underflow error enable */ +#define LTQ_SPI_CON_AEN BIT(10) /* Abort error enable */ +#define LTQ_SPI_CON_REN BIT(9) /* Receive overflow error enable */ +#define LTQ_SPI_CON_TEN BIT(8) /* Transmit overflow error enable */ +#define LTQ_SPI_CON_LB BIT(7) /* Loopback control */ +#define LTQ_SPI_CON_PO BIT(6) /* Clock polarity control */ +#define LTQ_SPI_CON_PH BIT(5) /* Clock phase control */ +#define LTQ_SPI_CON_HB BIT(4) /* Heading control */ +#define LTQ_SPI_CON_RXOFF BIT(1) /* Switch receiver off */ +#define LTQ_SPI_CON_TXOFF BIT(0) /* Switch transmitter off */ + +#define LTQ_SPI_STAT_RXBV_S 28 +#define LTQ_SPI_STAT_RXBV_M (0x7 << LTQ_SPI_STAT_RXBV_S) +#define LTQ_SPI_STAT_BSY BIT(13) /* Busy flag */ +#define LTQ_SPI_STAT_RUE BIT(12) /* Receive underflow error flag */ +#define LTQ_SPI_STAT_TUE BIT(11) /* Transmit underflow error flag */ +#define LTQ_SPI_STAT_AE BIT(10) /* Abort error flag */ +#define LTQ_SPI_STAT_RE BIT(9) /* Receive error flag */ +#define LTQ_SPI_STAT_TE BIT(8) /* Transmit error flag */ +#define LTQ_SPI_STAT_ME BIT(7) /* Mode error flag */ +#define LTQ_SPI_STAT_MS BIT(1) /* Master/slave select bit */ +#define LTQ_SPI_STAT_EN BIT(0) /* Enable bit */ +#define LTQ_SPI_STAT_ERRORS (LTQ_SPI_STAT_ME | LTQ_SPI_STAT_TE | \ + LTQ_SPI_STAT_RE | LTQ_SPI_STAT_AE | \ + LTQ_SPI_STAT_TUE | LTQ_SPI_STAT_RUE) + +#define LTQ_SPI_WHBSTATE_SETTUE BIT(15) /* Set transmit underflow error flag */ +#define LTQ_SPI_WHBSTATE_SETAE BIT(14) /* Set abort error flag */ +#define LTQ_SPI_WHBSTATE_SETRE BIT(13) /* Set receive error flag */ +#define LTQ_SPI_WHBSTATE_SETTE BIT(12) /* Set transmit error flag */ +#define LTQ_SPI_WHBSTATE_CLRTUE BIT(11) /* Clear transmit underflow error flag */ +#define LTQ_SPI_WHBSTATE_CLRAE BIT(10) /* Clear abort error flag */ +#define LTQ_SPI_WHBSTATE_CLRRE BIT(9) /* Clear receive error flag */ +#define LTQ_SPI_WHBSTATE_CLRTE BIT(8) /* Clear transmit error flag */ +#define LTQ_SPI_WHBSTATE_SETME BIT(7) /* Set mode error flag */ +#define LTQ_SPI_WHBSTATE_CLRME BIT(6) /* Clear mode error flag */ +#define LTQ_SPI_WHBSTATE_SETRUE BIT(5) /* Set receive underflow error flag */ +#define LTQ_SPI_WHBSTATE_CLRRUE BIT(4) /* Clear receive underflow error flag */ +#define LTQ_SPI_WHBSTATE_SETMS BIT(3) /* Set master select bit */ +#define LTQ_SPI_WHBSTATE_CLRMS BIT(2) /* Clear master select bit */ +#define LTQ_SPI_WHBSTATE_SETEN BIT(1) /* Set enable bit (operational mode) */ +#define LTQ_SPI_WHBSTATE_CLREN BIT(0) /* Clear enable bit (config mode */ +#define LTQ_SPI_WHBSTATE_CLR_ERRORS (LTQ_SPI_WHBSTATE_CLRRUE | \ + LTQ_SPI_WHBSTATE_CLRME | \ + LTQ_SPI_WHBSTATE_CLRTE | \ + LTQ_SPI_WHBSTATE_CLRRE | \ + LTQ_SPI_WHBSTATE_CLRAE | \ + LTQ_SPI_WHBSTATE_CLRTUE) + +#define LTQ_SPI_RXFCON_RXFITL_S 8 /* FIFO interrupt trigger level */ +#define LTQ_SPI_RXFCON_RXFITL_M (0x3F << LTQ_SPI_RXFCON_RXFITL_S) +#define LTQ_SPI_RXFCON_RXFLU BIT(1) /* FIFO flush */ +#define LTQ_SPI_RXFCON_RXFEN BIT(0) /* FIFO enable */ + +#define LTQ_SPI_TXFCON_TXFITL_S 8 /* FIFO interrupt trigger level */ +#define LTQ_SPI_TXFCON_TXFITL_M (0x3F << LTQ_SPI_TXFCON_TXFITL_S) +#define LTQ_SPI_TXFCON_TXFLU BIT(1) /* FIFO flush */ +#define LTQ_SPI_TXFCON_TXFEN BIT(0) /* FIFO enable */ + +#define LTQ_SPI_FSTAT_RXFFL_S 0 +#define LTQ_SPI_FSTAT_RXFFL_M (0x3f << LTQ_SPI_FSTAT_RXFFL_S) +#define LTQ_SPI_FSTAT_TXFFL_S 8 +#define LTQ_SPI_FSTAT_TXFFL_M (0x3f << LTQ_SPI_FSTAT_TXFFL_S) + +#define LTQ_SPI_GPOCON_ISCSBN_S 8 +#define LTQ_SPI_GPOCON_INVOUTN_S 0 + +#define LTQ_SPI_FGPO_SETOUTN_S 8 +#define LTQ_SPI_FGPO_CLROUTN_S 0 + +#define LTQ_SPI_RXREQ_RXCNT_M 0xFFFF /* Receive count value */ +#define LTQ_SPI_RXCNT_TODO_M 0xFFFF /* Recevie to-do value */ + +#define LTQ_SPI_IRNEN_TFI BIT(4) /* TX finished interrupt */ +#define LTQ_SPI_IRNEN_F BIT(3) /* Frame end interrupt request */ +#define LTQ_SPI_IRNEN_E BIT(2) /* Error end interrupt request */ +#define LTQ_SPI_IRNEN_T_XWAY BIT(1) /* Transmit end interrupt request */ +#define LTQ_SPI_IRNEN_R_XWAY BIT(0) /* Receive end interrupt request */ +#define LTQ_SPI_IRNEN_R_XRX BIT(1) /* Transmit end interrupt request */ +#define LTQ_SPI_IRNEN_T_XRX BIT(0) /* Receive end interrupt request */ +#define LTQ_SPI_IRNEN_ALL 0x1F struct lantiq_ssc_hwcfg { unsigned int irnen_r; @@ -208,16 +212,16 @@ static void lantiq_ssc_maskl(const struct lantiq_ssc_spi *spi, u32 clr, static unsigned int tx_fifo_level(const struct lantiq_ssc_spi *spi) { - u32 fstat = lantiq_ssc_readl(spi, SPI_FSTAT); + u32 fstat = lantiq_ssc_readl(spi, LTQ_SPI_FSTAT); - return (fstat & SPI_FSTAT_TXFFL_M) >> SPI_FSTAT_TXFFL_S; + return (fstat & LTQ_SPI_FSTAT_TXFFL_M) >> LTQ_SPI_FSTAT_TXFFL_S; } static unsigned int rx_fifo_level(const struct lantiq_ssc_spi *spi) { - u32 fstat = lantiq_ssc_readl(spi, SPI_FSTAT); + u32 fstat = lantiq_ssc_readl(spi, LTQ_SPI_FSTAT); - return fstat & SPI_FSTAT_RXFFL_M; + return fstat & LTQ_SPI_FSTAT_RXFFL_M; } static unsigned int tx_fifo_free(const struct lantiq_ssc_spi *spi) @@ -227,38 +231,38 @@ static unsigned int tx_fifo_free(const struct lantiq_ssc_spi *spi) static void rx_fifo_reset(const struct lantiq_ssc_spi *spi) { - u32 val = spi->rx_fifo_size << SPI_RXFCON_RXFITL_S; + u32 val = spi->rx_fifo_size << LTQ_SPI_RXFCON_RXFITL_S; - val |= SPI_RXFCON_RXFEN | SPI_RXFCON_RXFLU; - lantiq_ssc_writel(spi, val, SPI_RXFCON); + val |= LTQ_SPI_RXFCON_RXFEN | LTQ_SPI_RXFCON_RXFLU; + lantiq_ssc_writel(spi, val, LTQ_SPI_RXFCON); } static void tx_fifo_reset(const struct lantiq_ssc_spi *spi) { - u32 val = 1 << SPI_TXFCON_TXFITL_S; + u32 val = 1 << LTQ_SPI_TXFCON_TXFITL_S; - val |= SPI_TXFCON_TXFEN | SPI_TXFCON_TXFLU; - lantiq_ssc_writel(spi, val, SPI_TXFCON); + val |= LTQ_SPI_TXFCON_TXFEN | LTQ_SPI_TXFCON_TXFLU; + lantiq_ssc_writel(spi, val, LTQ_SPI_TXFCON); } static void rx_fifo_flush(const struct lantiq_ssc_spi *spi) { - lantiq_ssc_maskl(spi, 0, SPI_RXFCON_RXFLU, SPI_RXFCON); + lantiq_ssc_maskl(spi, 0, LTQ_SPI_RXFCON_RXFLU, LTQ_SPI_RXFCON); } static void tx_fifo_flush(const struct lantiq_ssc_spi *spi) { - lantiq_ssc_maskl(spi, 0, SPI_TXFCON_TXFLU, SPI_TXFCON); + lantiq_ssc_maskl(spi, 0, LTQ_SPI_TXFCON_TXFLU, LTQ_SPI_TXFCON); } static void hw_enter_config_mode(const struct lantiq_ssc_spi *spi) { - lantiq_ssc_writel(spi, SPI_WHBSTATE_CLREN, SPI_WHBSTATE); + lantiq_ssc_writel(spi, LTQ_SPI_WHBSTATE_CLREN, LTQ_SPI_WHBSTATE); } static void hw_enter_active_mode(const struct lantiq_ssc_spi *spi) { - lantiq_ssc_writel(spi, SPI_WHBSTATE_SETEN, SPI_WHBSTATE); + lantiq_ssc_writel(spi, LTQ_SPI_WHBSTATE_SETEN, LTQ_SPI_WHBSTATE); } static void hw_setup_speed_hz(const struct lantiq_ssc_spi *spi, @@ -287,7 +291,7 @@ static void hw_setup_speed_hz(const struct lantiq_ssc_spi *spi, dev_dbg(spi->dev, "spi_clk %u, max_speed_hz %u, brt %u\n", spi_clk, max_speed_hz, brt); - lantiq_ssc_writel(spi, brt, SPI_BRT); + lantiq_ssc_writel(spi, brt, LTQ_SPI_BRT); } static void hw_setup_bits_per_word(const struct lantiq_ssc_spi *spi, @@ -296,9 +300,9 @@ static void hw_setup_bits_per_word(const struct lantiq_ssc_spi *spi, u32 bm; /* CON.BM value = bits_per_word - 1 */ - bm = (bits_per_word - 1) << SPI_CON_BM_S; + bm = (bits_per_word - 1) << LTQ_SPI_CON_BM_S; - lantiq_ssc_maskl(spi, SPI_CON_BM_M, bm, SPI_CON); + lantiq_ssc_maskl(spi, LTQ_SPI_CON_BM_M, bm, LTQ_SPI_CON); } static void hw_setup_clock_mode(const struct lantiq_ssc_spi *spi, @@ -315,28 +319,28 @@ static void hw_setup_clock_mode(const struct lantiq_ssc_spi *spi, * 3 1 1 1 0 */ if (mode & SPI_CPHA) - con_clr |= SPI_CON_PH; + con_clr |= LTQ_SPI_CON_PH; else - con_set |= SPI_CON_PH; + con_set |= LTQ_SPI_CON_PH; if (mode & SPI_CPOL) - con_set |= SPI_CON_PO | SPI_CON_IDLE; + con_set |= LTQ_SPI_CON_PO | LTQ_SPI_CON_IDLE; else - con_clr |= SPI_CON_PO | SPI_CON_IDLE; + con_clr |= LTQ_SPI_CON_PO | LTQ_SPI_CON_IDLE; /* Set heading control */ if (mode & SPI_LSB_FIRST) - con_clr |= SPI_CON_HB; + con_clr |= LTQ_SPI_CON_HB; else - con_set |= SPI_CON_HB; + con_set |= LTQ_SPI_CON_HB; /* Set loopback mode */ if (mode & SPI_LOOP) - con_set |= SPI_CON_LB; + con_set |= LTQ_SPI_CON_LB; else - con_clr |= SPI_CON_LB; + con_clr |= LTQ_SPI_CON_LB; - lantiq_ssc_maskl(spi, con_clr, con_set, SPI_CON); + lantiq_ssc_maskl(spi, con_clr, con_set, LTQ_SPI_CON); } static void lantiq_ssc_hw_init(const struct lantiq_ssc_spi *spi) @@ -347,37 +351,39 @@ static void lantiq_ssc_hw_init(const struct lantiq_ssc_spi *spi) * Set clock divider for run mode to 1 to * run at same frequency as FPI bus */ - lantiq_ssc_writel(spi, 1 << SPI_CLC_RMC_S, SPI_CLC); + lantiq_ssc_writel(spi, 1 << LTQ_SPI_CLC_RMC_S, LTQ_SPI_CLC); /* Put controller into config mode */ hw_enter_config_mode(spi); /* Clear error flags */ - lantiq_ssc_maskl(spi, 0, SPI_WHBSTATE_CLR_ERRORS, SPI_WHBSTATE); + lantiq_ssc_maskl(spi, 0, LTQ_SPI_WHBSTATE_CLR_ERRORS, LTQ_SPI_WHBSTATE); /* Enable error checking, disable TX/RX */ - lantiq_ssc_writel(spi, SPI_CON_RUEN | SPI_CON_AEN | SPI_CON_TEN | - SPI_CON_REN | SPI_CON_TXOFF | SPI_CON_RXOFF, SPI_CON); + lantiq_ssc_writel(spi, LTQ_SPI_CON_RUEN | LTQ_SPI_CON_AEN | + LTQ_SPI_CON_TEN | LTQ_SPI_CON_REN | LTQ_SPI_CON_TXOFF | + LTQ_SPI_CON_RXOFF, LTQ_SPI_CON); /* Setup default SPI mode */ hw_setup_bits_per_word(spi, spi->bits_per_word); hw_setup_clock_mode(spi, SPI_MODE_0); /* Enable master mode and clear error flags */ - lantiq_ssc_writel(spi, SPI_WHBSTATE_SETMS | SPI_WHBSTATE_CLR_ERRORS, - SPI_WHBSTATE); + lantiq_ssc_writel(spi, LTQ_SPI_WHBSTATE_SETMS | + LTQ_SPI_WHBSTATE_CLR_ERRORS, + LTQ_SPI_WHBSTATE); /* Reset GPIO/CS registers */ - lantiq_ssc_writel(spi, 0, SPI_GPOCON); - lantiq_ssc_writel(spi, 0xFF00, SPI_FPGO); + lantiq_ssc_writel(spi, 0, LTQ_SPI_GPOCON); + lantiq_ssc_writel(spi, 0xFF00, LTQ_SPI_FPGO); /* Enable and flush FIFOs */ rx_fifo_reset(spi); tx_fifo_reset(spi); /* Enable interrupts */ - lantiq_ssc_writel(spi, hwcfg->irnen_t | hwcfg->irnen_r | SPI_IRNEN_E, - SPI_IRNEN); + lantiq_ssc_writel(spi, hwcfg->irnen_t | hwcfg->irnen_r | + LTQ_SPI_IRNEN_E, LTQ_SPI_IRNEN); } static int lantiq_ssc_setup(struct spi_device *spidev) @@ -400,13 +406,13 @@ static int lantiq_ssc_setup(struct spi_device *spidev) } /* set GPO pin to CS mode */ - gpocon = 1 << ((cs - spi->base_cs) + SPI_GPOCON_ISCSBN_S); + gpocon = 1 << ((cs - spi->base_cs) + LTQ_SPI_GPOCON_ISCSBN_S); /* invert GPO pin */ if (spidev->mode & SPI_CS_HIGH) gpocon |= 1 << (cs - spi->base_cs); - lantiq_ssc_maskl(spi, 0, gpocon, SPI_GPOCON); + lantiq_ssc_maskl(spi, 0, gpocon, LTQ_SPI_GPOCON); return 0; } @@ -442,18 +448,18 @@ static void hw_setup_transfer(struct lantiq_ssc_spi *spi, } /* Configure transmitter and receiver */ - con = lantiq_ssc_readl(spi, SPI_CON); + con = lantiq_ssc_readl(spi, LTQ_SPI_CON); if (t->tx_buf) - con &= ~SPI_CON_TXOFF; + con &= ~LTQ_SPI_CON_TXOFF; else - con |= SPI_CON_TXOFF; + con |= LTQ_SPI_CON_TXOFF; if (t->rx_buf) - con &= ~SPI_CON_RXOFF; + con &= ~LTQ_SPI_CON_RXOFF; else - con |= SPI_CON_RXOFF; + con |= LTQ_SPI_CON_RXOFF; - lantiq_ssc_writel(spi, con, SPI_CON); + lantiq_ssc_writel(spi, con, LTQ_SPI_CON); } static int lantiq_ssc_unprepare_message(struct spi_master *master, @@ -464,7 +470,8 @@ static int lantiq_ssc_unprepare_message(struct spi_master *master, flush_workqueue(spi->wq); /* Disable transmitter and receiver while idle */ - lantiq_ssc_maskl(spi, 0, SPI_CON_TXOFF | SPI_CON_RXOFF, SPI_CON); + lantiq_ssc_maskl(spi, 0, LTQ_SPI_CON_TXOFF | LTQ_SPI_CON_RXOFF, + LTQ_SPI_CON); return 0; } @@ -503,7 +510,7 @@ static void tx_fifo_write(struct lantiq_ssc_spi *spi) break; } - lantiq_ssc_writel(spi, data, SPI_TB); + lantiq_ssc_writel(spi, data, LTQ_SPI_TB); tx_free--; } } @@ -517,7 +524,7 @@ static void rx_fifo_read_full_duplex(struct lantiq_ssc_spi *spi) unsigned int rx_fill = rx_fifo_level(spi); while (rx_fill) { - data = lantiq_ssc_readl(spi, SPI_RB); + data = lantiq_ssc_readl(spi, LTQ_SPI_RB); switch (spi->bits_per_word) { case 2 ... 8: @@ -563,9 +570,9 @@ static void rx_fifo_read_half_duplex(struct lantiq_ssc_spi *spi) */ while (rx_fill) { if (spi->rx_todo < 4) { - rxbv = (lantiq_ssc_readl(spi, SPI_STAT) & - SPI_STAT_RXBV_M) >> SPI_STAT_RXBV_S; - data = lantiq_ssc_readl(spi, SPI_RB); + rxbv = (lantiq_ssc_readl(spi, LTQ_SPI_STAT) & + LTQ_SPI_STAT_RXBV_M) >> LTQ_SPI_STAT_RXBV_S; + data = lantiq_ssc_readl(spi, LTQ_SPI_RB); shift = (rxbv - 1) * 8; rx8 = spi->rx; @@ -578,7 +585,7 @@ static void rx_fifo_read_half_duplex(struct lantiq_ssc_spi *spi) spi->rx++; } } else { - data = lantiq_ssc_readl(spi, SPI_RB); + data = lantiq_ssc_readl(spi, LTQ_SPI_RB); rx32 = (u32 *) spi->rx; *rx32++ = data; @@ -603,7 +610,7 @@ static void rx_request(struct lantiq_ssc_spi *spi) if (rxreq > rxreq_max) rxreq = rxreq_max; - lantiq_ssc_writel(spi, rxreq, SPI_RXREQ); + lantiq_ssc_writel(spi, rxreq, LTQ_SPI_RXREQ); } static irqreturn_t lantiq_ssc_xmit_interrupt(int irq, void *data) @@ -642,26 +649,26 @@ completed: static irqreturn_t lantiq_ssc_err_interrupt(int irq, void *data) { struct lantiq_ssc_spi *spi = data; - u32 stat = lantiq_ssc_readl(spi, SPI_STAT); + u32 stat = lantiq_ssc_readl(spi, LTQ_SPI_STAT); - if (!(stat & SPI_STAT_ERRORS)) + if (!(stat & LTQ_SPI_STAT_ERRORS)) return IRQ_NONE; - if (stat & SPI_STAT_RUE) + if (stat & LTQ_SPI_STAT_RUE) dev_err(spi->dev, "receive underflow error\n"); - if (stat & SPI_STAT_TUE) + if (stat & LTQ_SPI_STAT_TUE) dev_err(spi->dev, "transmit underflow error\n"); - if (stat & SPI_STAT_AE) + if (stat & LTQ_SPI_STAT_AE) dev_err(spi->dev, "abort error\n"); - if (stat & SPI_STAT_RE) + if (stat & LTQ_SPI_STAT_RE) dev_err(spi->dev, "receive overflow error\n"); - if (stat & SPI_STAT_TE) + if (stat & LTQ_SPI_STAT_TE) dev_err(spi->dev, "transmit overflow error\n"); - if (stat & SPI_STAT_ME) + if (stat & LTQ_SPI_STAT_ME) dev_err(spi->dev, "mode error\n"); /* Clear error flags */ - lantiq_ssc_maskl(spi, 0, SPI_WHBSTATE_CLR_ERRORS, SPI_WHBSTATE); + lantiq_ssc_maskl(spi, 0, LTQ_SPI_WHBSTATE_CLR_ERRORS, LTQ_SPI_WHBSTATE); /* set bad status so it can be retried */ if (spi->master->cur_msg) @@ -721,9 +728,9 @@ static void lantiq_ssc_bussy_work(struct work_struct *work) end = jiffies + msecs_to_jiffies(timeout); do { - u32 stat = lantiq_ssc_readl(spi, SPI_STAT); + u32 stat = lantiq_ssc_readl(spi, LTQ_SPI_STAT); - if (!(stat & SPI_STAT_BSY)) { + if (!(stat & LTQ_SPI_STAT_BSY)) { spi_finalize_current_transfer(spi->master); return; } @@ -755,9 +762,9 @@ static void lantiq_ssc_set_cs(struct spi_device *spidev, bool enable) if (!!(spidev->mode & SPI_CS_HIGH) == enable) fgpo = (1 << (cs - spi->base_cs)); else - fgpo = (1 << (cs - spi->base_cs + SPI_FGPO_SETOUTN_S)); + fgpo = (1 << (cs - spi->base_cs + LTQ_SPI_FGPO_SETOUTN_S)); - lantiq_ssc_writel(spi, fgpo, SPI_FPGO); + lantiq_ssc_writel(spi, fgpo, LTQ_SPI_FPGO); } static int lantiq_ssc_transfer_one(struct spi_master *master, @@ -772,13 +779,13 @@ static int lantiq_ssc_transfer_one(struct spi_master *master, } static const struct lantiq_ssc_hwcfg lantiq_ssc_xway = { - .irnen_r = SPI_IRNEN_R_XWAY, - .irnen_t = SPI_IRNEN_T_XWAY, + .irnen_r = LTQ_SPI_IRNEN_R_XWAY, + .irnen_t = LTQ_SPI_IRNEN_T_XWAY, }; static const struct lantiq_ssc_hwcfg lantiq_ssc_xrx = { - .irnen_r = SPI_IRNEN_R_XRX, - .irnen_t = SPI_IRNEN_T_XRX, + .irnen_r = LTQ_SPI_IRNEN_R_XRX, + .irnen_t = LTQ_SPI_IRNEN_T_XRX, }; static const struct of_device_id lantiq_ssc_match[] = { @@ -814,21 +821,21 @@ static int lantiq_ssc_probe(struct platform_device *pdev) return -ENXIO; } - rx_irq = platform_get_irq_byname(pdev, SPI_RX_IRQ_NAME); + rx_irq = platform_get_irq_byname(pdev, LTQ_SPI_RX_IRQ_NAME); if (rx_irq < 0) { - dev_err(dev, "failed to get %s\n", SPI_RX_IRQ_NAME); + dev_err(dev, "failed to get %s\n", LTQ_SPI_RX_IRQ_NAME); return -ENXIO; } - tx_irq = platform_get_irq_byname(pdev, SPI_TX_IRQ_NAME); + tx_irq = platform_get_irq_byname(pdev, LTQ_SPI_TX_IRQ_NAME); if (tx_irq < 0) { - dev_err(dev, "failed to get %s\n", SPI_TX_IRQ_NAME); + dev_err(dev, "failed to get %s\n", LTQ_SPI_TX_IRQ_NAME); return -ENXIO; } - err_irq = platform_get_irq_byname(pdev, SPI_ERR_IRQ_NAME); + err_irq = platform_get_irq_byname(pdev, LTQ_SPI_ERR_IRQ_NAME); if (err_irq < 0) { - dev_err(dev, "failed to get %s\n", SPI_ERR_IRQ_NAME); + dev_err(dev, "failed to get %s\n", LTQ_SPI_ERR_IRQ_NAME); return -ENXIO; } @@ -849,17 +856,17 @@ static int lantiq_ssc_probe(struct platform_device *pdev) } err = devm_request_irq(dev, rx_irq, lantiq_ssc_xmit_interrupt, - 0, SPI_RX_IRQ_NAME, spi); + 0, LTQ_SPI_RX_IRQ_NAME, spi); if (err) goto err_master_put; err = devm_request_irq(dev, tx_irq, lantiq_ssc_xmit_interrupt, - 0, SPI_TX_IRQ_NAME, spi); + 0, LTQ_SPI_TX_IRQ_NAME, spi); if (err) goto err_master_put; err = devm_request_irq(dev, err_irq, lantiq_ssc_err_interrupt, - 0, SPI_ERR_IRQ_NAME, spi); + 0, LTQ_SPI_ERR_IRQ_NAME, spi); if (err) goto err_master_put; @@ -916,11 +923,11 @@ static int lantiq_ssc_probe(struct platform_device *pdev) } INIT_WORK(&spi->work, lantiq_ssc_bussy_work); - id = lantiq_ssc_readl(spi, SPI_ID); - spi->tx_fifo_size = (id & SPI_ID_TXFS_M) >> SPI_ID_TXFS_S; - spi->rx_fifo_size = (id & SPI_ID_RXFS_M) >> SPI_ID_RXFS_S; - supports_dma = (id & SPI_ID_CFG_M) >> SPI_ID_CFG_S; - revision = id & SPI_ID_REV_M; + id = lantiq_ssc_readl(spi, LTQ_SPI_ID); + spi->tx_fifo_size = (id & LTQ_SPI_ID_TXFS_M) >> LTQ_SPI_ID_TXFS_S; + spi->rx_fifo_size = (id & LTQ_SPI_ID_RXFS_M) >> LTQ_SPI_ID_RXFS_S; + supports_dma = (id & LTQ_SPI_ID_CFG_M) >> LTQ_SPI_ID_CFG_S; + revision = id & LTQ_SPI_ID_REV_M; lantiq_ssc_hw_init(spi); @@ -952,8 +959,8 @@ static int lantiq_ssc_remove(struct platform_device *pdev) { struct lantiq_ssc_spi *spi = platform_get_drvdata(pdev); - lantiq_ssc_writel(spi, 0, SPI_IRNEN); - lantiq_ssc_writel(spi, 0, SPI_CLC); + lantiq_ssc_writel(spi, 0, LTQ_SPI_IRNEN); + lantiq_ssc_writel(spi, 0, LTQ_SPI_CLC); rx_fifo_flush(spi); tx_fifo_flush(spi); hw_enter_config_mode(spi); @@ -970,7 +977,6 @@ static struct platform_driver lantiq_ssc_driver = { .remove = lantiq_ssc_remove, .driver = { .name = "spi-lantiq-ssc", - .owner = THIS_MODULE, .of_match_table = lantiq_ssc_match, }, }; |
