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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Eugen.Hristev@microchip.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Eugen Hristev Add compatible for new Microchip SoC, sam9x60 Signed-off-by: Eugen Hristev --- Documentation/devicetree/bindings/i2c/i2c-at91.txt | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/i2c/i2c-at91.txt b/Documentation/devicetree/bindings/i2c/i2c-at91.txt index b7cec17..2210f43 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-at91.txt +++ b/Documentation/devicetree/bindings/i2c/i2c-at91.txt @@ -3,7 +3,8 @@ I2C for Atmel platforms Required properties : - compatible : Must be "atmel,at91rm9200-i2c", "atmel,at91sam9261-i2c", "atmel,at91sam9260-i2c", "atmel,at91sam9g20-i2c", "atmel,at91sam9g10-i2c", - "atmel,at91sam9x5-i2c", "atmel,sama5d4-i2c" or "atmel,sama5d2-i2c" + "atmel,at91sam9x5-i2c", "atmel,sama5d4-i2c", "atmel,sama5d2-i2c" or + "microchip,sam9x60-i2c" - reg: physical base address of the controller and length of memory mapped region. - interrupts: interrupt number to the cpu. 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X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Eugen.Hristev@microchip.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Eugen Hristev Add new platform data support for the sam9x60 SoC Signed-off-by: Eugen Hristev --- drivers/i2c/busses/i2c-at91-core.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/i2c/busses/i2c-at91-core.c b/drivers/i2c/busses/i2c-at91-core.c index 8d55cdd..a663a7a 100644 --- a/drivers/i2c/busses/i2c-at91-core.c +++ b/drivers/i2c/busses/i2c-at91-core.c @@ -148,6 +148,14 @@ static struct at91_twi_pdata sama5d2_config = { .has_hold_field = true, }; +static struct at91_twi_pdata sam9x60_config = { + .clk_max_div = 7, + .clk_offset = 4, + .has_unre_flag = true, + .has_alt_cmd = true, + .has_hold_field = true, +}; + static const struct of_device_id atmel_twi_dt_ids[] = { { .compatible = "atmel,at91rm9200-i2c", @@ -174,6 +182,9 @@ static const struct of_device_id atmel_twi_dt_ids[] = { .compatible = "atmel,sama5d2-i2c", .data = &sama5d2_config, }, { + .compatible = "microchip,sam9x60-i2c", + .data = &sam9x60_config, + }, { /* sentinel */ } }; From patchwork Thu Jun 20 07:16:13 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eugen Hristev X-Patchwork-Id: 11006013 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D4CE314B6 for ; Thu, 20 Jun 2019 07:16:48 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BC1722832B for ; Thu, 20 Jun 2019 07:16:48 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AFAB0284D4; 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The sama5d4, sama5d2 and sam9x60 support this feature. Signed-off-by: Eugen Hristev --- drivers/i2c/busses/i2c-at91-core.c | 9 +++++++++ drivers/i2c/busses/i2c-at91-master.c | 6 ++++++ drivers/i2c/busses/i2c-at91.h | 4 ++++ 3 files changed, 19 insertions(+) diff --git a/drivers/i2c/busses/i2c-at91-core.c b/drivers/i2c/busses/i2c-at91-core.c index a663a7a..62610af 100644 --- a/drivers/i2c/busses/i2c-at91-core.c +++ b/drivers/i2c/busses/i2c-at91-core.c @@ -68,6 +68,7 @@ static struct at91_twi_pdata at91rm9200_config = { .has_unre_flag = true, .has_alt_cmd = false, .has_hold_field = false, + .has_dig_filtr = false, }; static struct at91_twi_pdata at91sam9261_config = { @@ -76,6 +77,7 @@ static struct at91_twi_pdata at91sam9261_config = { .has_unre_flag = false, .has_alt_cmd = false, .has_hold_field = false, + .has_dig_filtr = false, }; static struct at91_twi_pdata at91sam9260_config = { @@ -84,6 +86,7 @@ static struct at91_twi_pdata at91sam9260_config = { .has_unre_flag = false, .has_alt_cmd = false, .has_hold_field = false, + .has_dig_filtr = false, }; static struct at91_twi_pdata at91sam9g20_config = { @@ -92,6 +95,7 @@ static struct at91_twi_pdata at91sam9g20_config = { .has_unre_flag = false, .has_alt_cmd = false, .has_hold_field = false, + .has_dig_filtr = false, }; static struct at91_twi_pdata at91sam9g10_config = { @@ -100,6 +104,7 @@ static struct at91_twi_pdata at91sam9g10_config = { .has_unre_flag = false, .has_alt_cmd = false, .has_hold_field = false, + .has_dig_filtr = false, }; static const struct platform_device_id at91_twi_devtypes[] = { @@ -130,6 +135,7 @@ static struct at91_twi_pdata at91sam9x5_config = { .has_unre_flag = false, .has_alt_cmd = false, .has_hold_field = false, + .has_dig_filtr = false, }; static struct at91_twi_pdata sama5d4_config = { @@ -138,6 +144,7 @@ static struct at91_twi_pdata sama5d4_config = { .has_unre_flag = false, .has_alt_cmd = false, .has_hold_field = true, + .has_dig_filtr = true, }; static struct at91_twi_pdata sama5d2_config = { @@ -146,6 +153,7 @@ static struct at91_twi_pdata sama5d2_config = { .has_unre_flag = true, .has_alt_cmd = true, .has_hold_field = true, + .has_dig_filtr = true, }; static struct at91_twi_pdata sam9x60_config = { @@ -154,6 +162,7 @@ static struct at91_twi_pdata sam9x60_config = { .has_unre_flag = true, .has_alt_cmd = true, .has_hold_field = true, + .has_dig_filtr = true, }; static const struct of_device_id atmel_twi_dt_ids[] = { diff --git a/drivers/i2c/busses/i2c-at91-master.c b/drivers/i2c/busses/i2c-at91-master.c index e87232f..366e90f 100644 --- a/drivers/i2c/busses/i2c-at91-master.c +++ b/drivers/i2c/busses/i2c-at91-master.c @@ -31,12 +31,18 @@ void at91_init_twi_bus_master(struct at91_twi_dev *dev) { + struct at91_twi_pdata *pdata = dev->pdata; + /* FIFO should be enabled immediately after the software reset */ if (dev->fifo_size) at91_twi_write(dev, AT91_TWI_CR, AT91_TWI_FIFOEN); at91_twi_write(dev, AT91_TWI_CR, AT91_TWI_MSEN); at91_twi_write(dev, AT91_TWI_CR, AT91_TWI_SVDIS); at91_twi_write(dev, AT91_TWI_CWGR, dev->twi_cwgr_reg); + + /* enable digital filter */ + if (pdata->has_dig_filtr) + at91_twi_write(dev, AT91_TWI_FILTR, AT91_TWI_FILTR_FILT); } /* diff --git a/drivers/i2c/busses/i2c-at91.h b/drivers/i2c/busses/i2c-at91.h index 499b506..3e80811 100644 --- a/drivers/i2c/busses/i2c-at91.h +++ b/drivers/i2c/busses/i2c-at91.h @@ -84,6 +84,9 @@ #define AT91_TWI_ACR_DATAL(len) ((len) & 0xff) #define AT91_TWI_ACR_DIR BIT(8) +#define AT91_TWI_FILTR 0x0044 +#define AT91_TWI_FILTR_FILT BIT(0) + #define AT91_TWI_FMR 0x0050 /* FIFO Mode Register */ #define AT91_TWI_FMR_TXRDYM(mode) (((mode) & 0x3) << 0) #define AT91_TWI_FMR_TXRDYM_MASK (0x3 << 0) @@ -108,6 +111,7 @@ struct at91_twi_pdata { bool has_unre_flag; bool has_alt_cmd; bool has_hold_field; + bool has_dig_filtr; struct at_dma_slave dma_slave; }; From patchwork Thu Jun 20 07:16:16 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eugen Hristev X-Patchwork-Id: 11006015 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6E52E14B6 for ; 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The sama5d2 and sam9x60 support this feature. This digital filter allows the user to configure the maximum width of the spikes that can be filtered. Signed-off-by: Eugen Hristev --- drivers/i2c/busses/i2c-at91-core.c | 9 +++++++++ drivers/i2c/busses/i2c-at91-master.c | 6 ++++++ drivers/i2c/busses/i2c-at91.h | 3 +++ 3 files changed, 18 insertions(+) diff --git a/drivers/i2c/busses/i2c-at91-core.c b/drivers/i2c/busses/i2c-at91-core.c index 62610af..3bbe37c 100644 --- a/drivers/i2c/busses/i2c-at91-core.c +++ b/drivers/i2c/busses/i2c-at91-core.c @@ -69,6 +69,7 @@ static struct at91_twi_pdata at91rm9200_config = { .has_alt_cmd = false, .has_hold_field = false, .has_dig_filtr = false, + .has_adv_dig_filtr = false, }; static struct at91_twi_pdata at91sam9261_config = { @@ -78,6 +79,7 @@ static struct at91_twi_pdata at91sam9261_config = { .has_alt_cmd = false, .has_hold_field = false, .has_dig_filtr = false, + .has_adv_dig_filtr = false, }; static struct at91_twi_pdata at91sam9260_config = { @@ -87,6 +89,7 @@ static struct at91_twi_pdata at91sam9260_config = { .has_alt_cmd = false, .has_hold_field = false, .has_dig_filtr = false, + .has_adv_dig_filtr = false, }; static struct at91_twi_pdata at91sam9g20_config = { @@ -96,6 +99,7 @@ static struct at91_twi_pdata at91sam9g20_config = { .has_alt_cmd = false, .has_hold_field = false, .has_dig_filtr = false, + .has_adv_dig_filtr = false, }; static struct at91_twi_pdata at91sam9g10_config = { @@ -105,6 +109,7 @@ static struct at91_twi_pdata at91sam9g10_config = { .has_alt_cmd = false, .has_hold_field = false, .has_dig_filtr = false, + .has_adv_dig_filtr = false, }; static const struct platform_device_id at91_twi_devtypes[] = { @@ -136,6 +141,7 @@ static struct at91_twi_pdata at91sam9x5_config = { .has_alt_cmd = false, .has_hold_field = false, .has_dig_filtr = false, + .has_adv_dig_filtr = false, }; static struct at91_twi_pdata sama5d4_config = { @@ -145,6 +151,7 @@ static struct at91_twi_pdata sama5d4_config = { .has_alt_cmd = false, .has_hold_field = true, .has_dig_filtr = true, + .has_adv_dig_filtr = false, }; static struct at91_twi_pdata sama5d2_config = { @@ -154,6 +161,7 @@ static struct at91_twi_pdata sama5d2_config = { .has_alt_cmd = true, .has_hold_field = true, .has_dig_filtr = true, + .has_adv_dig_filtr = true, }; static struct at91_twi_pdata sam9x60_config = { @@ -163,6 +171,7 @@ static struct at91_twi_pdata sam9x60_config = { .has_alt_cmd = true, .has_hold_field = true, .has_dig_filtr = true, + .has_adv_dig_filtr = true, }; static const struct of_device_id atmel_twi_dt_ids[] = { diff --git a/drivers/i2c/busses/i2c-at91-master.c b/drivers/i2c/busses/i2c-at91-master.c index 366e90f..b9e601e 100644 --- a/drivers/i2c/busses/i2c-at91-master.c +++ b/drivers/i2c/busses/i2c-at91-master.c @@ -43,6 +43,12 @@ void at91_init_twi_bus_master(struct at91_twi_dev *dev) /* enable digital filter */ if (pdata->has_dig_filtr) at91_twi_write(dev, AT91_TWI_FILTR, AT91_TWI_FILTR_FILT); + + /* enable advanced digital filter */ + if (pdata->has_adv_dig_filtr) + at91_twi_write(dev, AT91_TWI_FILTR, AT91_TWI_FILTR_FILT | + (AT91_TWI_FILTR_THRES(7) & + AT91_TWI_FILTR_THRES_MASK)); } /* diff --git a/drivers/i2c/busses/i2c-at91.h b/drivers/i2c/busses/i2c-at91.h index 3e80811..ccf18ba 100644 --- a/drivers/i2c/busses/i2c-at91.h +++ b/drivers/i2c/busses/i2c-at91.h @@ -86,6 +86,8 @@ #define AT91_TWI_FILTR 0x0044 #define AT91_TWI_FILTR_FILT BIT(0) +#define AT91_TWI_FILTR_THRES(v) ((v) << 8) +#define AT91_TWI_FILTR_THRES_MASK GENMASK(10, 8) #define AT91_TWI_FMR 0x0050 /* FIFO Mode Register */ #define AT91_TWI_FMR_TXRDYM(mode) (((mode) & 0x3) << 0) @@ -112,6 +114,7 @@ struct at91_twi_pdata { bool has_alt_cmd; bool has_hold_field; bool has_dig_filtr; + bool has_adv_dig_filtr; struct at_dma_slave dma_slave; }; From patchwork Thu Jun 20 07:16:19 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eugen Hristev X-Patchwork-Id: 11006019 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 240FE14B6 for ; Thu, 20 Jun 2019 07:18:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0C3F7284D4 for ; Thu, 20 Jun 2019 07:18:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id F40DB28505; Thu, 20 Jun 2019 07:18:01 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 683A3284D4 for ; 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The sama5d2 and sam9x60 support this feature. Signed-off-by: Eugen Hristev --- drivers/i2c/busses/i2c-at91-core.c | 9 +++++++++ drivers/i2c/busses/i2c-at91-master.c | 15 +++++++++++---- drivers/i2c/busses/i2c-at91.h | 3 +++ 3 files changed, 23 insertions(+), 4 deletions(-) diff --git a/drivers/i2c/busses/i2c-at91-core.c b/drivers/i2c/busses/i2c-at91-core.c index 3bbe37c..d2840ba 100644 --- a/drivers/i2c/busses/i2c-at91-core.c +++ b/drivers/i2c/busses/i2c-at91-core.c @@ -70,6 +70,7 @@ static struct at91_twi_pdata at91rm9200_config = { .has_hold_field = false, .has_dig_filtr = false, .has_adv_dig_filtr = false, + .has_ana_filtr = false, }; static struct at91_twi_pdata at91sam9261_config = { @@ -80,6 +81,7 @@ static struct at91_twi_pdata at91sam9261_config = { .has_hold_field = false, .has_dig_filtr = false, .has_adv_dig_filtr = false, + .has_ana_filtr = false, }; static struct at91_twi_pdata at91sam9260_config = { @@ -90,6 +92,7 @@ static struct at91_twi_pdata at91sam9260_config = { .has_hold_field = false, .has_dig_filtr = false, .has_adv_dig_filtr = false, + .has_ana_filtr = false, }; static struct at91_twi_pdata at91sam9g20_config = { @@ -100,6 +103,7 @@ static struct at91_twi_pdata at91sam9g20_config = { .has_hold_field = false, .has_dig_filtr = false, .has_adv_dig_filtr = false, + .has_ana_filtr = false, }; static struct at91_twi_pdata at91sam9g10_config = { @@ -110,6 +114,7 @@ static struct at91_twi_pdata at91sam9g10_config = { .has_hold_field = false, .has_dig_filtr = false, .has_adv_dig_filtr = false, + .has_ana_filtr = false, }; static const struct platform_device_id at91_twi_devtypes[] = { @@ -142,6 +147,7 @@ static struct at91_twi_pdata at91sam9x5_config = { .has_hold_field = false, .has_dig_filtr = false, .has_adv_dig_filtr = false, + .has_ana_filtr = false, }; static struct at91_twi_pdata sama5d4_config = { @@ -152,6 +158,7 @@ static struct at91_twi_pdata sama5d4_config = { .has_hold_field = true, .has_dig_filtr = true, .has_adv_dig_filtr = false, + .has_ana_filtr = false, }; static struct at91_twi_pdata sama5d2_config = { @@ -162,6 +169,7 @@ static struct at91_twi_pdata sama5d2_config = { .has_hold_field = true, .has_dig_filtr = true, .has_adv_dig_filtr = true, + .has_ana_filtr = true, }; static struct at91_twi_pdata sam9x60_config = { @@ -172,6 +180,7 @@ static struct at91_twi_pdata sam9x60_config = { .has_hold_field = true, .has_dig_filtr = true, .has_adv_dig_filtr = true, + .has_ana_filtr = true, }; static const struct of_device_id atmel_twi_dt_ids[] = { diff --git a/drivers/i2c/busses/i2c-at91-master.c b/drivers/i2c/busses/i2c-at91-master.c index b9e601e..6b591ac 100644 --- a/drivers/i2c/busses/i2c-at91-master.c +++ b/drivers/i2c/busses/i2c-at91-master.c @@ -32,6 +32,7 @@ void at91_init_twi_bus_master(struct at91_twi_dev *dev) { struct at91_twi_pdata *pdata = dev->pdata; + u32 filtr = 0; /* FIFO should be enabled immediately after the software reset */ if (dev->fifo_size) @@ -42,13 +43,19 @@ void at91_init_twi_bus_master(struct at91_twi_dev *dev) /* enable digital filter */ if (pdata->has_dig_filtr) - at91_twi_write(dev, AT91_TWI_FILTR, AT91_TWI_FILTR_FILT); + filtr |= AT91_TWI_FILTR_FILT; /* enable advanced digital filter */ if (pdata->has_adv_dig_filtr) - at91_twi_write(dev, AT91_TWI_FILTR, AT91_TWI_FILTR_FILT | - (AT91_TWI_FILTR_THRES(7) & - AT91_TWI_FILTR_THRES_MASK)); + filtr |= AT91_TWI_FILTR_FILT | + (AT91_TWI_FILTR_THRES(7) & AT91_TWI_FILTR_THRES_MASK); + + /* enable analog filter */ + if (pdata->has_ana_filtr) + filtr |= AT91_TWI_FILTR_PADFEN | AT91_TWI_FILTR_PADFCFG; + + if (filtr) + at91_twi_write(dev, AT91_TWI_FILTR, filtr); } /* diff --git a/drivers/i2c/busses/i2c-at91.h b/drivers/i2c/busses/i2c-at91.h index ccf18ba..f009799 100644 --- a/drivers/i2c/busses/i2c-at91.h +++ b/drivers/i2c/busses/i2c-at91.h @@ -86,6 +86,8 @@ #define AT91_TWI_FILTR 0x0044 #define AT91_TWI_FILTR_FILT BIT(0) +#define AT91_TWI_FILTR_PADFEN BIT(1) +#define AT91_TWI_FILTR_PADFCFG BIT(2) #define AT91_TWI_FILTR_THRES(v) ((v) << 8) #define AT91_TWI_FILTR_THRES_MASK GENMASK(10, 8) @@ -115,6 +117,7 @@ struct at91_twi_pdata { bool has_hold_field; bool has_dig_filtr; bool has_adv_dig_filtr; + bool has_ana_filtr; struct at_dma_slave dma_slave; };