| Message ID | 20210910202640.980366-14-l.stach@pengutronix.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | i.MX8MM GPC improvements and BLK_CTRL driver | expand |
On Fri, Sep 10, 2021 at 3:26 PM Lucas Stach <l.stach@pengutronix.de> wrote: > > This adds the description for the i.MX8MM disp blk-ctrl. > > Signed-off-by: Lucas Stach <l.stach@pengutronix.de> > Reviewed-by: Peng Fan <peng.fan@nxp.com> > --- > drivers/soc/imx/imx8m-blk-ctrl.c | 70 ++++++++++++++++++++++++++++++++ > 1 file changed, 70 insertions(+) > > diff --git a/drivers/soc/imx/imx8m-blk-ctrl.c b/drivers/soc/imx/imx8m-blk-ctrl.c > index f2d74669d683..225c15f35dad 100644 > --- a/drivers/soc/imx/imx8m-blk-ctrl.c > +++ b/drivers/soc/imx/imx8m-blk-ctrl.c > @@ -431,11 +431,81 @@ static const struct imx8m_blk_ctrl_data imx8m_vpu_blk_ctl_dev_data = { > .num_domains = ARRAY_SIZE(imx8m_vpu_blk_ctl_domain_data), > }; > > +static int imx8mm_disp_power_notifier(struct notifier_block *nb, > + unsigned long action, void *data) > +{ > + struct imx8m_blk_ctrl *bc = container_of(nb, struct imx8m_blk_ctrl, > + power_nb); > + > + if (action != GENPD_NOTIFY_ON && action != GENPD_NOTIFY_PRE_OFF) > + return NOTIFY_OK; > + > + /* Enable bus clock and deassert bus reset */ > + regmap_set_bits(bc->regmap, BLK_CLK_EN, BIT(12)); > + regmap_set_bits(bc->regmap, BLK_SFT_RSTN, BIT(6)); > + > + /* > + * On power up we have no software backchannel to the GPC to > + * wait for the ADB handshake to happen, so we just delay for a > + * bit. On power down the GPC driver waits for the handshake. > + */ > + if (action == GENPD_NOTIFY_ON) > + udelay(5); > + > + > + return NOTIFY_OK; > +} > + > +static const struct imx8m_blk_ctrl_domain_data imx8m_disp_blk_ctl_domain_data[] = { Since the 8MQ, 8MM, 8MN, and 8MP have different blk_ctl structures, shouldn't this be imx8mm_disp_blk_ctl_domain_data? > + [IMX8MM_DISPBLK_PD_CSI_BRIDGE] = { > + .name = "dispblk-csi-bridge", > + .clk_names = (const char *[]){ "csi-bridge-axi", "csi-bridge-apb", > + "csi-bridge-core", }, > + .num_clks = 3, > + .gpc_name = "csi-bridge", > + .rst_mask = BIT(0) | BIT(1) | BIT(2), > + .clk_mask = BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5), > + }, > + [IMX8MM_DISPBLK_PD_LCDIF] = { > + .name = "dispblk-lcdif", > + .clk_names = (const char *[]){ "lcdif-axi", "lcdif-apb", "lcdif-pix", }, > + .num_clks = 3, > + .gpc_name = "lcdif", > + .clk_mask = BIT(6) | BIT(7), > + }, > + [IMX8MM_DISPBLK_PD_MIPI_DSI] = { > + .name = "dispblk-mipi-dsi", > + .clk_names = (const char *[]){ "dsi-pclk", "dsi-ref", }, > + .num_clks = 2, > + .gpc_name = "mipi-dsi", > + .rst_mask = BIT(5), > + .clk_mask = BIT(8) | BIT(9), > + }, > + [IMX8MM_DISPBLK_PD_MIPI_CSI] = { > + .name = "dispblk-mipi-csi", > + .clk_names = (const char *[]){ "csi-aclk", "csi-pclk" }, > + .num_clks = 2, > + .gpc_name = "mipi-csi", > + .rst_mask = BIT(3) | BIT(4), > + .clk_mask = BIT(10) | BIT(11), > + }, > +}; > + > +static const struct imx8m_blk_ctrl_data imx8m_disp_blk_ctl_dev_data = { Same here. > + .max_reg = 0x2c, > + .power_notifier_fn = imx8mm_disp_power_notifier, > + .domains = imx8m_disp_blk_ctl_domain_data, > + .num_domains = ARRAY_SIZE(imx8m_disp_blk_ctl_domain_data), > +}; > + > static const struct of_device_id imx8m_blk_ctrl_of_match[] = { > { > .compatible = "fsl,imx8mm-vpu-blk-ctrl", > .data = &imx8m_vpu_blk_ctl_dev_data > }, { > + .compatible = "fsl,imx8mm-disp-blk-ctrl", > + .data = &imx8m_disp_blk_ctl_dev_data > + } ,{ > /* Sentinel */ > } > }; > -- > 2.30.2 >
diff --git a/drivers/soc/imx/imx8m-blk-ctrl.c b/drivers/soc/imx/imx8m-blk-ctrl.c index f2d74669d683..225c15f35dad 100644 --- a/drivers/soc/imx/imx8m-blk-ctrl.c +++ b/drivers/soc/imx/imx8m-blk-ctrl.c @@ -431,11 +431,81 @@ static const struct imx8m_blk_ctrl_data imx8m_vpu_blk_ctl_dev_data = { .num_domains = ARRAY_SIZE(imx8m_vpu_blk_ctl_domain_data), }; +static int imx8mm_disp_power_notifier(struct notifier_block *nb, + unsigned long action, void *data) +{ + struct imx8m_blk_ctrl *bc = container_of(nb, struct imx8m_blk_ctrl, + power_nb); + + if (action != GENPD_NOTIFY_ON && action != GENPD_NOTIFY_PRE_OFF) + return NOTIFY_OK; + + /* Enable bus clock and deassert bus reset */ + regmap_set_bits(bc->regmap, BLK_CLK_EN, BIT(12)); + regmap_set_bits(bc->regmap, BLK_SFT_RSTN, BIT(6)); + + /* + * On power up we have no software backchannel to the GPC to + * wait for the ADB handshake to happen, so we just delay for a + * bit. On power down the GPC driver waits for the handshake. + */ + if (action == GENPD_NOTIFY_ON) + udelay(5); + + + return NOTIFY_OK; +} + +static const struct imx8m_blk_ctrl_domain_data imx8m_disp_blk_ctl_domain_data[] = { + [IMX8MM_DISPBLK_PD_CSI_BRIDGE] = { + .name = "dispblk-csi-bridge", + .clk_names = (const char *[]){ "csi-bridge-axi", "csi-bridge-apb", + "csi-bridge-core", }, + .num_clks = 3, + .gpc_name = "csi-bridge", + .rst_mask = BIT(0) | BIT(1) | BIT(2), + .clk_mask = BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(5), + }, + [IMX8MM_DISPBLK_PD_LCDIF] = { + .name = "dispblk-lcdif", + .clk_names = (const char *[]){ "lcdif-axi", "lcdif-apb", "lcdif-pix", }, + .num_clks = 3, + .gpc_name = "lcdif", + .clk_mask = BIT(6) | BIT(7), + }, + [IMX8MM_DISPBLK_PD_MIPI_DSI] = { + .name = "dispblk-mipi-dsi", + .clk_names = (const char *[]){ "dsi-pclk", "dsi-ref", }, + .num_clks = 2, + .gpc_name = "mipi-dsi", + .rst_mask = BIT(5), + .clk_mask = BIT(8) | BIT(9), + }, + [IMX8MM_DISPBLK_PD_MIPI_CSI] = { + .name = "dispblk-mipi-csi", + .clk_names = (const char *[]){ "csi-aclk", "csi-pclk" }, + .num_clks = 2, + .gpc_name = "mipi-csi", + .rst_mask = BIT(3) | BIT(4), + .clk_mask = BIT(10) | BIT(11), + }, +}; + +static const struct imx8m_blk_ctrl_data imx8m_disp_blk_ctl_dev_data = { + .max_reg = 0x2c, + .power_notifier_fn = imx8mm_disp_power_notifier, + .domains = imx8m_disp_blk_ctl_domain_data, + .num_domains = ARRAY_SIZE(imx8m_disp_blk_ctl_domain_data), +}; + static const struct of_device_id imx8m_blk_ctrl_of_match[] = { { .compatible = "fsl,imx8mm-vpu-blk-ctrl", .data = &imx8m_vpu_blk_ctl_dev_data }, { + .compatible = "fsl,imx8mm-disp-blk-ctrl", + .data = &imx8m_disp_blk_ctl_dev_data + } ,{ /* Sentinel */ } };