InKi Dae wrote:
>
> Signed-off-by: Inki Dae <inki.dae@xxxxxxxxxxx>
> ---
> arch/arm/mach-s5pv210/Kconfig | 6 +++
> arch/arm/mach-s5pv210/Makefile | 1 +
> arch/arm/mach-s5pv210/setup-mipi.c | 76
> ++++++++++++++++++++++++++++++++++++
> 3 files changed, 83 insertions(+), 0 deletions(-)
> create mode 100644 arch/arm/mach-s5pv210/setup-mipi.c
>
> diff --git a/arch/arm/mach-s5pv210/Kconfig b/arch/arm/mach-s5pv210/Kconfig
> index 862f239..76da541 100644
> --- a/arch/arm/mach-s5pv210/Kconfig
> +++ b/arch/arm/mach-s5pv210/Kconfig
> @@ -53,6 +53,11 @@ config S5PV210_SETUP_SDHCI_GPIO
> help
> Common setup code for SDHCI gpio.
>
> +config S5P_SETUP_MIPI_DSI
If this is for S5PV210, please use S5PV210_xxx as prefix. Or this is for S5P
SoCS, move into plat-s5p.
And as I know, this is _not_ only for MIPI DSI master...so need to re-name.
> + bool
> + help
> + Common setup code for MIPI-DSI
> +
> menu "S5PC110 Machines"
>
> config MACH_AQUILA
> @@ -92,6 +97,7 @@ config MACH_GONI
> select S5PV210_SETUP_I2C2
> select S5PV210_SETUP_KEYPAD
> select S5PV210_SETUP_SDHCI
> + select S5P_SETUP_MIPI_DSI
Is this really only for machine?
> help
> Machine support for Samsung GONI board
> S5PC110(MCP) is one of package option of S5PV210
> diff --git a/arch/arm/mach-s5pv210/Makefile
b/arch/arm/mach-s5pv210/Makefile
> index ff1a0db..638747c 100644
> --- a/arch/arm/mach-s5pv210/Makefile
> +++ b/arch/arm/mach-s5pv210/Makefile
> @@ -37,3 +37,4 @@ obj-$(CONFIG_S5PV210_SETUP_IDE) +=
setup-ide.o
> obj-$(CONFIG_S5PV210_SETUP_KEYPAD) += setup-keypad.o
> obj-$(CONFIG_S5PV210_SETUP_SDHCI) += setup-sdhci.o
> obj-$(CONFIG_S5PV210_SETUP_SDHCI_GPIO) += setup-sdhci-gpio.o
> +obj-$(CONFIG_S5P_SETUP_MIPI_DSI) += setup-mipi.o
> \ No newline at end of file
> diff --git a/arch/arm/mach-s5pv210/setup-mipi.c b/arch/arm/mach-
> s5pv210/setup-mipi.c
> new file mode 100644
> index 0000000..2cc8cd1
> --- /dev/null
> +++ b/arch/arm/mach-s5pv210/setup-mipi.c
> @@ -0,0 +1,76 @@
> +/* linux/arch/arm/plat-s5p/setup-mipi.c
> + *
> + * Samsung MIPI-DSI DPHY driver.
> + *
> + * Author: InKi Dae <inki.dae@xxxxxxxxxxx>
> + *
> + * This program is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License as
> + * published by the Free Software Foundation; either version 2 of
> + * the License, or (at your option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
> + * MA 02111-1307 USA
> + */
> +#include <linux/kernel.h>
> +#include <linux/string.h>
> +#include <linux/io.h>
> +#include <linux/err.h>
> +#include <linux/platform_device.h>
> +#include <linux/clk.h>
> +
> +#include <mach/map.h>
> +#include <mach/regs-clock.h>
> +
> +#include <plat/mipi-dsi.h>
Hmm...I didn't find this header in your previous patch.
> +#include <plat/regs-dsim.h>
Same.
> +
> +static int s5p_mipi_enable_d_phy(struct dsim_device *dsim, unsigned int
> enable)
Why need struct dsim_device in argument?
As I said, this is for MIPI DSI and MIPI CSI...right?
> +{
> + unsigned int reg;
> +
> + reg = readl(S5P_MIPI_CONTROL) & ~(1 << 0);
Please use __raw_readl here, because no need memory barrier between
operations.
> + reg |= (enable << 0);
> + writel(reg, S5P_MIPI_CONTROL);
Same.
> +
> + return 0;
Always, return 0?
If enabled by MIPI DSI and MIPI CSI, how each IP can know other IP's MIPI
enalbling?
> +}
> +
> +static int s5p_mipi_enable_dsi_master(struct dsim_device *dsim,
Same.
> + unsigned int enable)
> +{
> + unsigned int reg;
> +
> + reg = readl(S5P_MIPI_CONTROL) & ~(1 << 2);
Same.
> + reg |= (enable << 2);
> + writel(reg, S5P_MIPI_CONTROL);
Same.
> +
> + return 0;
> +}
> +
> +int s5p_mipi_part_reset(struct dsim_device *dsim)
Do we really need argument, struct dsim_device?
> +{
> + writel(S5P_MIPI_M_RESETN, S5P_MIPI_PHY_CON0);
> +
> + return 0;
> +}
> +
> +int s5p_mipi_init_d_phy(struct dsim_device *dsim)
> +{
> + /**
> + * DPHY and Master block must be enabled at the system
initialization
> + * step before data access from/to DPHY begins.
> + */
> + s5p_mipi_enable_d_phy(dsim, 1);
> +
> + s5p_mipi_enable_dsi_master(dsim, 1);
> +
> + return 0;
> +}
> --
I can't get these needs...I mean need to re-think this for support MIPI
DSI(M) and MIPI CSI(S).
Actually MIPI control is needed in both.
Thanks.
Best regards,
Kgene.
--
Kukjin Kim <kgene.kim@xxxxxxxxxxx>, Senior Engineer,
SW Solution Development Team, Samsung Electronics Co., Ltd.
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